LibreKAT/Ocideck
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feature/meldingen-hardening #6

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brenno merged 5 commits from feature/meldingen-hardening into main 2026-06-11 20:40:08 +00:00
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lib/widgets/app_shell.dart
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@ -30,173 +30,13 @@ import 'presentation/fullscreen_presenter.dart';
// ── Shared helpers ──────────────────────────────────────────────────────────
/// Open the search-based presentation picker and load the chosen file
/// (optionally jumping to a matched slide).
Future<void> _openWithSearch(
BuildContext context,
WidgetRef ref,
String? initialDirectory,
) async {
final settings = ref.read(settingsProvider);
final result = await OpenPresentationDialog.show(
context,
fileService: ref.read(fileServiceProvider),
initialDirectory: initialDirectory ?? settings.homeDirectory,
);
if (result == null) return;
await ref
.read(tabsProvider.notifier)
.openFileByPath(result.path, selectIndex: result.slideIndex);
}
/// Vraag een URL op om een presentatie (pakket of markdown) op te halen.
Future<String?> _showUrlDialog(BuildContext context) {
final l10n = context.l10n;
final controller = TextEditingController();
return showDialog<String>(
context: context,
builder: (ctx) => AlertDialog(
title: Text(l10n.d('Importeren via URL')),
content: SizedBox(
width: 460,
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
l10n.d(
'Plak de link naar een .ocideck-pakket of een Marp-markdownbestand.',
),
style: const TextStyle(fontSize: 12, color: Color(0xFF64748B)),
),
const SizedBox(height: 12),
TextField(
controller: controller,
autofocus: true,
keyboardType: TextInputType.url,
decoration: const InputDecoration(
hintText: 'https://…',
prefixIcon: Icon(Icons.link, size: 18),
isDense: true,
border: OutlineInputBorder(),
),
onSubmitted: (v) => Navigator.pop(ctx, v),
),
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(ctx),
child: Text(l10n.t('cancel')),
),
ElevatedButton.icon(
onPressed: () => Navigator.pop(ctx, controller.text),
icon: const Icon(Icons.download, size: 16),
label: Text(l10n.d('Ophalen')),
),
],
),
);
}
List<String> _imageSearchPaths(String? projectPath, String? homeDirectory) {
final projectImagesPath = projectPath == null
? null
: p.join(projectPath, 'images');
return [?projectImagesPath, ?projectPath, ?homeDirectory];
}
String? _resolveImagePath(String path, String? projectPath) {
if (path.isEmpty) return null;
if (p.isAbsolute(path) || projectPath == null) return path;
return p.join(projectPath, path);
}
List<String> _imageUsages(WidgetRef ref, String absolutePath) {
final target = p.normalize(absolutePath);
final usages = <String>[];
for (final tab in ref.read(tabsProvider).tabs) {
final deck = tab.deckNotifier.currentState.deck;
if (deck == null) continue;
for (var i = 0; i < deck.slides.length; i++) {
final slide = deck.slides[i];
for (final candidate in [slide.imagePath, slide.imagePath2]) {
if (candidate.isEmpty) continue;
final resolved = p.normalize(
p.isAbsolute(candidate)
? candidate
: p.join(deck.projectPath ?? '', candidate),
);
if (resolved == target) {
usages.add('${tab.label} · slide ${i + 1}');
break;
}
}
}
}
return usages;
}
/// Wijs in alle open decks elke slideverwijzing naar [fromAbsolute] om naar
/// [toAbsolute]. Gebruikt door de afbeeldingenbibliotheek wanneer een md5-
/// duplicaat wordt opgeruimd, zodat slides het behouden bestand blijven tonen.
Future<void> _replaceImageUsages(
WidgetRef ref,
String fromAbsolute,
String toAbsolute,
) async {
final target = p.normalize(fromAbsolute);
for (final tab in ref.read(tabsProvider).tabs) {
final notifier = tab.deckNotifier;
final deck = notifier.currentState.deck;
if (deck == null) continue;
final projectPath = deck.projectPath ?? '';
String resolve(String candidate) => p.normalize(
p.isAbsolute(candidate) ? candidate : p.join(projectPath, candidate),
);
// Blijf relatief opslaan als de slide dat al deed en het nieuwe pad
// binnen het project ligt; anders absoluut.
String replacement(String candidate) {
if (p.isAbsolute(candidate) || projectPath.isEmpty) return toAbsolute;
return p.isWithin(projectPath, toAbsolute)
? p.relative(toAbsolute, from: projectPath)
: toAbsolute;
}
for (var i = 0; i < deck.slides.length; i++) {
final slide = deck.slides[i];
var updated = slide;
if (slide.imagePath.isNotEmpty && resolve(slide.imagePath) == target) {
updated = updated.copyWith(imagePath: replacement(slide.imagePath));
}
if (slide.imagePath2.isNotEmpty && resolve(slide.imagePath2) == target) {
updated = updated.copyWith(imagePath2: replacement(slide.imagePath2));
}
if (!identical(updated, slide)) notifier.updateSlide(i, updated);
}
}
}
List<Slide> _slidesForPresentationOrExport(Deck deck) {
// Drop skipped slides and slides whose TLP classification is stricter than
// the level chosen for this presentation/export.
final slides = deck.slides
.where((s) => !s.skipped && slideVisibleAtTlp(s, deck.tlp))
.toList();
final closingMarkdown = deck.themeProfile.closingSlideMarkdown.trim();
if (deck.themeProfile.closingSlideEnabled && closingMarkdown.isNotEmpty) {
slides.add(
Slide.create(
SlideType.freeMarkdown,
).copyWith(customMarkdown: closingMarkdown),
);
}
return slides;
}
// ── App shell ─────────────────────────────────────────────────────────────────
// Shell sub-widgets and helpers, split into part files for navigability.
// These parts share this library's imports and private scope.
part 'shell/shell_actions.dart';
part 'shell/tab_bar.dart';
part 'shell/welcome_screen.dart';
part 'shell/status_bar.dart';
part 'shell/shell_overlays.dart';
class AppShell extends ConsumerStatefulWidget {
const AppShell({super.key});
@ -504,387 +344,6 @@ class _AppShellState extends ConsumerState<AppShell> with WindowListener {
}
}
/// Visuele hint terwijl bestanden boven het venster zweven.
class _DropOverlay extends StatelessWidget {
const _DropOverlay();
@override
Widget build(BuildContext context) {
return Positioned.fill(
child: IgnorePointer(
child: Container(
color: const Color(0xFF1C2B47).withValues(alpha: 0.55),
alignment: Alignment.center,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 22),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(14),
border: Border.all(color: const Color(0xFF60A5FA), width: 2),
),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const Icon(
Icons.file_download_outlined,
size: 40,
color: Color(0xFF2563EB),
),
const SizedBox(height: 10),
Text(
context.l10n.d('Laat los om toe te voegen'),
style: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w600,
color: Color(0xFF1E293B),
),
),
const SizedBox(height: 4),
Text(
context.l10n.d(
'Afbeeldingen → nieuwe slides · .md / .ocideck → openen',
),
style: const TextStyle(
fontSize: 12,
color: Color(0xFF64748B),
),
),
],
),
),
),
),
);
}
}
// ── Tab bar ───────────────────────────────────────────────────────────────────
class _AppTabBar extends StatelessWidget {
final TabsState tabsState;
final ValueChanged<int> onSelect;
final ValueChanged<int> onClose;
final VoidCallback onAdd;
const _AppTabBar({
required this.tabsState,
required this.onSelect,
required this.onClose,
required this.onAdd,
});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final palette = Theme.of(context).extension<AppPalette>()!;
return Container(
height: 36,
color: palette.panel,
child: Row(
children: [
Expanded(
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
children: [
for (int i = 0; i < tabsState.tabs.length; i++)
_TabChip(
tab: tabsState.tabs[i],
isActive: i == tabsState.clampedIndex,
showClose:
tabsState.tabs.length > 1 || tabsState.tabs[i].isOpen,
panelText: palette.panelText,
accent: Theme.of(context).colorScheme.secondary,
onTap: () => onSelect(i),
onClose: () => onClose(i),
),
],
),
),
),
Tooltip(
message: l10n.t('newTab'),
child: InkWell(
onTap: onAdd,
child: SizedBox(
width: 36,
height: 36,
child: Icon(
Icons.add,
size: 16,
color: palette.panelText.withValues(alpha: 0.55),
),
),
),
),
],
),
);
}
}
class _TabChip extends StatelessWidget {
final TabInfo tab;
final bool isActive;
final bool showClose;
final VoidCallback onTap;
final VoidCallback onClose;
final Color panelText;
final Color accent;
const _TabChip({
required this.tab,
required this.isActive,
required this.showClose,
required this.onTap,
required this.onClose,
required this.panelText,
required this.accent,
});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Container(
constraints: const BoxConstraints(minWidth: 80, maxWidth: 200),
height: 36,
decoration: BoxDecoration(
color: isActive
? panelText.withValues(alpha: 0.12)
: Colors.transparent,
border: Border(
bottom: BorderSide(
color: isActive ? accent : Colors.transparent,
width: 2,
),
),
),
padding: const EdgeInsets.symmetric(horizontal: 10),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (tab.isDirty)
Container(
width: 6,
height: 6,
margin: const EdgeInsets.only(right: 5),
decoration: const BoxDecoration(
color: Colors.orangeAccent,
shape: BoxShape.circle,
),
),
Flexible(
child: Text(
tab.label,
style: TextStyle(
fontSize: 12,
color: isActive
? panelText
: panelText.withValues(alpha: 0.72),
fontWeight: isActive ? FontWeight.w600 : FontWeight.normal,
),
overflow: TextOverflow.ellipsis,
),
),
if (showClose) ...[
const SizedBox(width: 4),
InkWell(
onTap: onClose,
borderRadius: BorderRadius.circular(3),
child: Padding(
padding: const EdgeInsets.all(2),
child: Icon(
Icons.close,
size: 12,
color: panelText.withValues(alpha: 0.55),
),
),
),
],
],
),
),
);
}
}
// ── Per-tab content ───────────────────────────────────────────────────────────
class _TabContent extends ConsumerWidget {
const _TabContent();
@override
Widget build(BuildContext context, WidgetRef ref) {
final isOpen = ref.watch(deckProvider.select((s) => s.isOpen));
if (!isOpen) return const _WelcomeScreen();
return _MainLayout(exportService: ExportService());
}
}
// ── Welcome screen ────────────────────────────────────────────────────────────
class _WelcomeScreen extends ConsumerWidget {
const _WelcomeScreen();
@override
Widget build(BuildContext context, WidgetRef ref) {
final l10n = context.l10n;
final theme = Theme.of(context);
final palette = theme.extension<AppPalette>()!;
final homeDir = ref.watch(settingsProvider.select((s) => s.homeDirectory));
final recentFiles = ref.watch(
settingsProvider.select((s) => s.recentFiles),
);
return Scaffold(
backgroundColor: theme.scaffoldBackgroundColor,
body: Row(
children: [
// ── Midden: logo + knoppen ─────────────────────────────────────
Expanded(
child: Align(
alignment: const Alignment(-0.15, 0.12),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Semantics(
label: 'De Winter Information Solutions',
image: true,
child: Image.asset(
'assets/images/de-winter-wittegeheel.png',
width: 320,
fit: BoxFit.contain,
filterQuality: FilterQuality.high,
),
),
const SizedBox(height: 36),
SizedBox(
width: 220,
child: ElevatedButton.icon(
onPressed: () => _newDeck(context, ref),
icon: const Icon(Icons.add, size: 18),
label: Text(l10n.t('newPresentation')),
),
),
const SizedBox(height: 12),
SizedBox(
width: 220,
child: OutlinedButton.icon(
onPressed: () => _openWithSearch(context, ref, homeDir),
icon: const Icon(Icons.folder_open_outlined, size: 18),
label: Text(l10n.t('open')),
),
),
const SizedBox(height: 8),
TextButton.icon(
onPressed: () => SettingsDialog.show(context),
icon: const Icon(Icons.settings_outlined, size: 17),
label: Text(l10n.t('settings')),
),
],
),
),
),
// ── Rechts: recente bestanden ──────────────────────────────────
if (recentFiles.isNotEmpty)
Container(
width: 280,
decoration: BoxDecoration(
color: theme.colorScheme.surface,
border: Border(
left: BorderSide(color: theme.colorScheme.outlineVariant),
),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(16, 20, 16, 10),
child: Text(
l10n.t('recentPresentations'),
style: TextStyle(
fontSize: 11,
fontWeight: FontWeight.w700,
color: palette.mutedText,
letterSpacing: 0.8,
),
),
),
Expanded(
child: ListView.builder(
padding: const EdgeInsets.only(bottom: 16),
itemCount: recentFiles.length,
itemBuilder: (_, i) {
final path = recentFiles[i];
final name = path.split('/').last.replaceAll('.md', '');
return InkWell(
onTap: () => ref
.read(tabsProvider.notifier)
.openFileByPath(path),
child: Padding(
padding: const EdgeInsets.symmetric(
horizontal: 16,
vertical: 10,
),
child: Row(
children: [
Icon(
Icons.slideshow_outlined,
size: 16,
color: theme.colorScheme.onSurfaceVariant,
),
const SizedBox(width: 10),
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: [
Text(
name,
style: TextStyle(
fontSize: 13,
fontWeight: FontWeight.w500,
color: theme.colorScheme.onSurface,
),
overflow: TextOverflow.ellipsis,
),
Text(
path,
style: TextStyle(
fontSize: 10,
color: palette.mutedText,
),
overflow: TextOverflow.ellipsis,
),
],
),
),
],
),
),
);
},
),
),
],
),
),
],
),
);
}
Future<void> _newDeck(BuildContext context, WidgetRef ref) async {
final title = await NewDeckDialog.show(context);
if (title != null) {
ref.read(tabsProvider.notifier).newDeckInCurrentTab(title);
}
}
}
// ── Main 2-panel layout ───────────────────────────────────────────────────────
class _MainLayout extends ConsumerStatefulWidget {
final ExportService exportService;
@ -1535,396 +994,3 @@ class _MainLayoutState extends ConsumerState<_MainLayout> {
}
// ── AppBar helpers ────────────────────────────────────────────────────────────
class _DeckStatusBar extends StatelessWidget {
final Deck deck;
final DeckState deckState;
final String? exportDirectory;
final Future<void> Function() onSave;
final VoidCallback? onExport;
final String exportTooltip;
const _DeckStatusBar({
required this.deck,
required this.deckState,
required this.exportDirectory,
required this.onSave,
required this.onExport,
required this.exportTooltip,
});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final skipped = deck.slides.where((s) => s.skipped).length;
final fileLabel = deckState.filePath == null
? l10n.t('notSavedYet')
: p.basename(deckState.filePath!);
final saveLabel = deckState.isDirty ? l10n.t('unsaved') : l10n.t('saved');
final exportLabel = exportDirectory == null
? l10n.t('exportNextToDeck')
: '${l10n.t('exportFolder')}: ${p.basename(exportDirectory!)}';
final theme = Theme.of(context);
return Material(
color: theme.colorScheme.surface,
child: Container(
height: 30,
padding: const EdgeInsets.symmetric(horizontal: 10),
decoration: BoxDecoration(
border: Border(
top: BorderSide(color: theme.colorScheme.outlineVariant),
),
),
child: Row(
children: [
_StatusAction(
icon: deckState.isDirty
? Icons.radio_button_checked
: Icons.check_circle_outline,
label: saveLabel,
tooltip: deckState.isDirty
? l10n.t('unsavedChanges')
: l10n.t('noUnsavedChanges'),
color: deckState.isDirty
? const Color(0xFFD97706)
: const Color(0xFF15803D),
onTap: () => onSave(),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.description_outlined,
label: fileLabel,
tooltip: deckState.filePath ?? l10n.t('noFileYet'),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.slideshow_outlined,
label: skipped == 0
? '${deck.slides.length} ${l10n.t('slides')}'
: '${deck.slides.length} ${l10n.t('slides')} · $skipped ${l10n.t('skipped')}',
tooltip: skipped == 0
? l10n.t('allSlidesIncluded')
: '$skipped ${l10n.t('skippedSlidesExcluded')}',
color: skipped == 0 ? null : const Color(0xFF8A6D3B),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.palette_outlined,
label: deck.themeProfile.name,
tooltip: '${l10n.t('styleProfile')}: ${deck.themeProfile.name}',
),
if (deck.tlp != TlpLevel.none) ...[
const _StatusDivider(),
_StatusItem(
icon: Icons.shield_outlined,
label: deck.tlp.label,
tooltip: '${l10n.t('classification')}: ${deck.tlp.label}',
color: Color(deck.tlp.foreground),
),
],
const Spacer(),
_StatusItem(
icon: Icons.folder_outlined,
label: exportLabel,
tooltip: exportDirectory ?? l10n.t('exportsNextToDeck'),
),
const SizedBox(width: 6),
_StatusAction(
icon: Icons.upload_file_outlined,
label: l10n.t('export'),
tooltip: exportTooltip,
onTap: onExport,
),
],
),
),
);
}
}
class _StatusItem extends StatelessWidget {
final IconData icon;
final String label;
final String tooltip;
final Color? color;
const _StatusItem({
required this.icon,
required this.label,
required this.tooltip,
this.color,
});
@override
Widget build(BuildContext context) {
final fg = color ?? Theme.of(context).colorScheme.onSurfaceVariant;
return Tooltip(
message: tooltip,
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 13, color: fg),
const SizedBox(width: 4),
ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 210),
child: Text(
label,
overflow: TextOverflow.ellipsis,
style: TextStyle(
fontSize: 11,
color: fg,
fontWeight: color == null ? FontWeight.normal : FontWeight.w600,
),
),
),
],
),
);
}
}
class _StatusAction extends StatelessWidget {
final IconData icon;
final String label;
final String tooltip;
final Color? color;
final VoidCallback? onTap;
const _StatusAction({
required this.icon,
required this.label,
required this.tooltip,
this.color,
this.onTap,
});
@override
Widget build(BuildContext context) {
final enabled = onTap != null;
final fg = enabled
? (color ?? Theme.of(context).colorScheme.secondary)
: Theme.of(context).disabledColor;
return Tooltip(
message: tooltip,
child: InkWell(
onTap: onTap,
borderRadius: BorderRadius.circular(4),
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 3),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 13, color: fg),
const SizedBox(width: 4),
Text(
label,
style: TextStyle(
fontSize: 11,
color: fg,
fontWeight: enabled ? FontWeight.w600 : FontWeight.normal,
),
),
],
),
),
),
);
}
}
class _StatusDivider extends StatelessWidget {
const _StatusDivider();
@override
Widget build(BuildContext context) {
return Container(
width: 1,
height: 14,
margin: const EdgeInsets.symmetric(horizontal: 8),
color: Theme.of(context).colorScheme.outlineVariant,
);
}
}
/// Dunne verticale scheiding tussen groepen AppBar-knoppen.
class _ActionsDivider extends StatelessWidget {
const _ActionsDivider();
@override
Widget build(BuildContext context) {
return Container(
width: 1,
height: 20,
margin: const EdgeInsets.symmetric(horizontal: 6),
color: Colors.white24,
);
}
}
class _ResizableDivider extends StatefulWidget {
final ValueChanged<double> onDrag;
const _ResizableDivider({required this.onDrag});
@override
State<_ResizableDivider> createState() => _ResizableDividerState();
}
class _ResizableDividerState extends State<_ResizableDivider> {
static const double _keyboardStep = 24;
bool _hovered = false;
bool _dragging = false;
bool _focused = false;
KeyEventResult _onKeyEvent(FocusNode node, KeyEvent event) {
if (event is KeyUpEvent) return KeyEventResult.ignored;
if (event.logicalKey == LogicalKeyboardKey.arrowLeft) {
widget.onDrag(-_keyboardStep);
return KeyEventResult.handled;
}
if (event.logicalKey == LogicalKeyboardKey.arrowRight) {
widget.onDrag(_keyboardStep);
return KeyEventResult.handled;
}
return KeyEventResult.ignored;
}
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final active = _hovered || _dragging || _focused;
// Keyboard-operable (WCAG 2.1.1): the divider is focusable, arrow keys
// move it, and focus is shown with the same highlight as hovering
// (WCAG 2.4.7). Screen readers see it as an adjustable element.
return Focus(
onKeyEvent: _onKeyEvent,
onFocusChange: (focused) => setState(() => _focused = focused),
child: Semantics(
slider: true,
label: l10n.d('Breedte van het slidepaneel'),
hint: l10n.d('Pijltjestoetsen passen de breedte aan'),
onIncrease: () => widget.onDrag(_keyboardStep),
onDecrease: () => widget.onDrag(-_keyboardStep),
child: MouseRegion(
cursor: SystemMouseCursors.resizeColumn,
onEnter: (_) => setState(() => _hovered = true),
onExit: (_) => setState(() => _hovered = false),
child: GestureDetector(
behavior: HitTestBehavior.translucent,
onHorizontalDragStart: (_) => setState(() => _dragging = true),
onHorizontalDragEnd: (_) => setState(() => _dragging = false),
onHorizontalDragCancel: () => setState(() => _dragging = false),
onHorizontalDragUpdate: (details) =>
widget.onDrag(details.delta.dx),
child: Tooltip(
message: l10n.d(
'Sleep om de slide-preview breder of smaller te maken',
),
child: SizedBox(
width: 9,
child: Center(
child: AnimatedContainer(
duration: const Duration(milliseconds: 90),
width: active ? 3 : 1,
color: active
? Theme.of(context).colorScheme.secondary
: Theme.of(context).colorScheme.outlineVariant,
),
),
),
),
),
),
),
);
}
}
/// TLP-classificatie als altijd zichtbare, direct instelbare chip in de
/// AppBar-titel. Toont de huidige status in de officiële TLP-kleur en opent
/// bij klikken een keuzelijst met alle niveaus (incl. "Geen").
class _TlpChip extends StatelessWidget {
final TlpLevel tlp;
final ValueChanged<TlpLevel> onSelected;
const _TlpChip({required this.tlp, required this.onSelected});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final isSet = tlp != TlpLevel.none;
final fg = Color(tlp.foreground);
final child = Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 5),
decoration: BoxDecoration(
color: isSet ? Colors.black : Colors.transparent,
borderRadius: BorderRadius.circular(6),
border: Border.all(
color: isSet ? fg.withValues(alpha: 0.7) : Colors.white24,
),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (!isSet)
const Icon(Icons.shield_outlined, size: 14, color: Colors.white70),
if (!isSet) const SizedBox(width: 5),
Text(
isSet ? tlp.label : 'TLP',
style: TextStyle(
color: isSet ? fg : Colors.white70,
fontSize: 11.5,
fontWeight: FontWeight.w700,
fontFamily: 'monospace',
fontFamilyFallback: const ['Menlo', 'Consolas', 'Courier New'],
letterSpacing: 0.3,
),
),
Icon(
Icons.arrow_drop_down,
size: 16,
color: isSet ? fg : Colors.white54,
),
],
),
);
return PopupMenuButton<TlpLevel>(
tooltip: l10n.d('TLP-classificatie (Traffic Light Protocol)'),
position: PopupMenuPosition.under,
onSelected: onSelected,
itemBuilder: (_) => [
for (final level in TlpLevel.values)
PopupMenuItem<TlpLevel>(
value: level,
child: Row(
children: [
Container(
width: 14,
height: 14,
decoration: BoxDecoration(
color: level == TlpLevel.none
? Colors.transparent
: Color(level.foreground),
border: Border.all(color: const Color(0xFF94A3B8)),
borderRadius: BorderRadius.circular(3),
),
),
const SizedBox(width: 10),
Text(level == TlpLevel.none ? l10n.d('Geen') : level.label),
if (level == tlp) ...[
const SizedBox(width: 12),
const Spacer(),
const Icon(Icons.check, size: 16, color: Color(0xFF475569)),
],
],
),
),
],
child: child,
);
}
}

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// Part of the app_shell library — see ../app_shell.dart.
// Split out for navigability; all imports live in the main library file.
part of '../app_shell.dart';
/// Open the search-based presentation picker and load the chosen file
/// (optionally jumping to a matched slide).
Future<void> _openWithSearch(
BuildContext context,
WidgetRef ref,
String? initialDirectory,
) async {
final settings = ref.read(settingsProvider);
final result = await OpenPresentationDialog.show(
context,
fileService: ref.read(fileServiceProvider),
initialDirectory: initialDirectory ?? settings.homeDirectory,
);
if (result == null) return;
await ref
.read(tabsProvider.notifier)
.openFileByPath(result.path, selectIndex: result.slideIndex);
}
/// Vraag een URL op om een presentatie (pakket of markdown) op te halen.
Future<String?> _showUrlDialog(BuildContext context) {
final l10n = context.l10n;
final controller = TextEditingController();
return showDialog<String>(
context: context,
builder: (ctx) => AlertDialog(
title: Text(l10n.d('Importeren via URL')),
content: SizedBox(
width: 460,
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
l10n.d(
'Plak de link naar een .ocideck-pakket of een Marp-markdownbestand.',
),
style: const TextStyle(fontSize: 12, color: Color(0xFF64748B)),
),
const SizedBox(height: 12),
TextField(
controller: controller,
autofocus: true,
keyboardType: TextInputType.url,
decoration: const InputDecoration(
hintText: 'https://…',
prefixIcon: Icon(Icons.link, size: 18),
isDense: true,
border: OutlineInputBorder(),
),
onSubmitted: (v) => Navigator.pop(ctx, v),
),
],
),
),
actions: [
TextButton(
onPressed: () => Navigator.pop(ctx),
child: Text(l10n.t('cancel')),
),
ElevatedButton.icon(
onPressed: () => Navigator.pop(ctx, controller.text),
icon: const Icon(Icons.download, size: 16),
label: Text(l10n.d('Ophalen')),
),
],
),
);
}
List<String> _imageSearchPaths(String? projectPath, String? homeDirectory) {
final projectImagesPath = projectPath == null
? null
: p.join(projectPath, 'images');
return [?projectImagesPath, ?projectPath, ?homeDirectory];
}
String? _resolveImagePath(String path, String? projectPath) {
if (path.isEmpty) return null;
if (p.isAbsolute(path) || projectPath == null) return path;
return p.join(projectPath, path);
}
List<String> _imageUsages(WidgetRef ref, String absolutePath) {
final target = p.normalize(absolutePath);
final usages = <String>[];
for (final tab in ref.read(tabsProvider).tabs) {
final deck = tab.deckNotifier.currentState.deck;
if (deck == null) continue;
for (var i = 0; i < deck.slides.length; i++) {
final slide = deck.slides[i];
for (final candidate in [slide.imagePath, slide.imagePath2]) {
if (candidate.isEmpty) continue;
final resolved = p.normalize(
p.isAbsolute(candidate)
? candidate
: p.join(deck.projectPath ?? '', candidate),
);
if (resolved == target) {
usages.add('${tab.label} · slide ${i + 1}');
break;
}
}
}
}
return usages;
}
/// Wijs in alle open decks elke slideverwijzing naar [fromAbsolute] om naar
/// [toAbsolute]. Gebruikt door de afbeeldingenbibliotheek wanneer een md5-
/// duplicaat wordt opgeruimd, zodat slides het behouden bestand blijven tonen.
Future<void> _replaceImageUsages(
WidgetRef ref,
String fromAbsolute,
String toAbsolute,
) async {
final target = p.normalize(fromAbsolute);
for (final tab in ref.read(tabsProvider).tabs) {
final notifier = tab.deckNotifier;
final deck = notifier.currentState.deck;
if (deck == null) continue;
final projectPath = deck.projectPath ?? '';
String resolve(String candidate) => p.normalize(
p.isAbsolute(candidate) ? candidate : p.join(projectPath, candidate),
);
// Blijf relatief opslaan als de slide dat al deed en het nieuwe pad
// binnen het project ligt; anders absoluut.
String replacement(String candidate) {
if (p.isAbsolute(candidate) || projectPath.isEmpty) return toAbsolute;
return p.isWithin(projectPath, toAbsolute)
? p.relative(toAbsolute, from: projectPath)
: toAbsolute;
}
for (var i = 0; i < deck.slides.length; i++) {
final slide = deck.slides[i];
var updated = slide;
if (slide.imagePath.isNotEmpty && resolve(slide.imagePath) == target) {
updated = updated.copyWith(imagePath: replacement(slide.imagePath));
}
if (slide.imagePath2.isNotEmpty && resolve(slide.imagePath2) == target) {
updated = updated.copyWith(imagePath2: replacement(slide.imagePath2));
}
if (!identical(updated, slide)) notifier.updateSlide(i, updated);
}
}
}
List<Slide> _slidesForPresentationOrExport(Deck deck) {
// Drop skipped slides and slides whose TLP classification is stricter than
// the level chosen for this presentation/export.
final slides = deck.slides
.where((s) => !s.skipped && slideVisibleAtTlp(s, deck.tlp))
.toList();
final closingMarkdown = deck.themeProfile.closingSlideMarkdown.trim();
if (deck.themeProfile.closingSlideEnabled && closingMarkdown.isNotEmpty) {
slides.add(
Slide.create(
SlideType.freeMarkdown,
).copyWith(customMarkdown: closingMarkdown),
);
}
return slides;
}
// ── App shell ─────────────────────────────────────────────────────────────────

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// Part of the app_shell library — see ../app_shell.dart.
// Split out for navigability; all imports live in the main library file.
part of '../app_shell.dart';
/// Visuele hint terwijl bestanden boven het venster zweven.
class _DropOverlay extends StatelessWidget {
const _DropOverlay();
@override
Widget build(BuildContext context) {
return Positioned.fill(
child: IgnorePointer(
child: Container(
color: const Color(0xFF1C2B47).withValues(alpha: 0.55),
alignment: Alignment.center,
child: Container(
padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 22),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(14),
border: Border.all(color: const Color(0xFF60A5FA), width: 2),
),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const Icon(
Icons.file_download_outlined,
size: 40,
color: Color(0xFF2563EB),
),
const SizedBox(height: 10),
Text(
context.l10n.d('Laat los om toe te voegen'),
style: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w600,
color: Color(0xFF1E293B),
),
),
const SizedBox(height: 4),
Text(
context.l10n.d(
'Afbeeldingen → nieuwe slides · .md / .ocideck → openen',
),
style: const TextStyle(
fontSize: 12,
color: Color(0xFF64748B),
),
),
],
),
),
),
),
);
}
}
// ── Tab bar ───────────────────────────────────────────────────────────────────
class _ResizableDivider extends StatefulWidget {
final ValueChanged<double> onDrag;
const _ResizableDivider({required this.onDrag});
@override
State<_ResizableDivider> createState() => _ResizableDividerState();
}
class _ResizableDividerState extends State<_ResizableDivider> {
static const double _keyboardStep = 24;
bool _hovered = false;
bool _dragging = false;
bool _focused = false;
KeyEventResult _onKeyEvent(FocusNode node, KeyEvent event) {
if (event is KeyUpEvent) return KeyEventResult.ignored;
if (event.logicalKey == LogicalKeyboardKey.arrowLeft) {
widget.onDrag(-_keyboardStep);
return KeyEventResult.handled;
}
if (event.logicalKey == LogicalKeyboardKey.arrowRight) {
widget.onDrag(_keyboardStep);
return KeyEventResult.handled;
}
return KeyEventResult.ignored;
}
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final active = _hovered || _dragging || _focused;
// Keyboard-operable (WCAG 2.1.1): the divider is focusable, arrow keys
// move it, and focus is shown with the same highlight as hovering
// (WCAG 2.4.7). Screen readers see it as an adjustable element.
return Focus(
onKeyEvent: _onKeyEvent,
onFocusChange: (focused) => setState(() => _focused = focused),
child: Semantics(
slider: true,
label: l10n.d('Breedte van het slidepaneel'),
hint: l10n.d('Pijltjestoetsen passen de breedte aan'),
onIncrease: () => widget.onDrag(_keyboardStep),
onDecrease: () => widget.onDrag(-_keyboardStep),
child: MouseRegion(
cursor: SystemMouseCursors.resizeColumn,
onEnter: (_) => setState(() => _hovered = true),
onExit: (_) => setState(() => _hovered = false),
child: GestureDetector(
behavior: HitTestBehavior.translucent,
onHorizontalDragStart: (_) => setState(() => _dragging = true),
onHorizontalDragEnd: (_) => setState(() => _dragging = false),
onHorizontalDragCancel: () => setState(() => _dragging = false),
onHorizontalDragUpdate: (details) =>
widget.onDrag(details.delta.dx),
child: Tooltip(
message: l10n.d(
'Sleep om de slide-preview breder of smaller te maken',
),
child: SizedBox(
width: 9,
child: Center(
child: AnimatedContainer(
duration: const Duration(milliseconds: 90),
width: active ? 3 : 1,
color: active
? Theme.of(context).colorScheme.secondary
: Theme.of(context).colorScheme.outlineVariant,
),
),
),
),
),
),
),
);
}
}

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// Part of the app_shell library — see ../app_shell.dart.
// Split out for navigability; all imports live in the main library file.
part of '../app_shell.dart';
class _DeckStatusBar extends StatelessWidget {
final Deck deck;
final DeckState deckState;
final String? exportDirectory;
final Future<void> Function() onSave;
final VoidCallback? onExport;
final String exportTooltip;
const _DeckStatusBar({
required this.deck,
required this.deckState,
required this.exportDirectory,
required this.onSave,
required this.onExport,
required this.exportTooltip,
});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final skipped = deck.slides.where((s) => s.skipped).length;
final fileLabel = deckState.filePath == null
? l10n.t('notSavedYet')
: p.basename(deckState.filePath!);
final saveLabel = deckState.isDirty ? l10n.t('unsaved') : l10n.t('saved');
final exportLabel = exportDirectory == null
? l10n.t('exportNextToDeck')
: '${l10n.t('exportFolder')}: ${p.basename(exportDirectory!)}';
final theme = Theme.of(context);
return Material(
color: theme.colorScheme.surface,
child: Container(
height: 30,
padding: const EdgeInsets.symmetric(horizontal: 10),
decoration: BoxDecoration(
border: Border(
top: BorderSide(color: theme.colorScheme.outlineVariant),
),
),
child: Row(
children: [
_StatusAction(
icon: deckState.isDirty
? Icons.radio_button_checked
: Icons.check_circle_outline,
label: saveLabel,
tooltip: deckState.isDirty
? l10n.t('unsavedChanges')
: l10n.t('noUnsavedChanges'),
color: deckState.isDirty
? const Color(0xFFD97706)
: const Color(0xFF15803D),
onTap: () => onSave(),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.description_outlined,
label: fileLabel,
tooltip: deckState.filePath ?? l10n.t('noFileYet'),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.slideshow_outlined,
label: skipped == 0
? '${deck.slides.length} ${l10n.t('slides')}'
: '${deck.slides.length} ${l10n.t('slides')} · $skipped ${l10n.t('skipped')}',
tooltip: skipped == 0
? l10n.t('allSlidesIncluded')
: '$skipped ${l10n.t('skippedSlidesExcluded')}',
color: skipped == 0 ? null : const Color(0xFF8A6D3B),
),
const _StatusDivider(),
_StatusItem(
icon: Icons.palette_outlined,
label: deck.themeProfile.name,
tooltip: '${l10n.t('styleProfile')}: ${deck.themeProfile.name}',
),
if (deck.tlp != TlpLevel.none) ...[
const _StatusDivider(),
_StatusItem(
icon: Icons.shield_outlined,
label: deck.tlp.label,
tooltip: '${l10n.t('classification')}: ${deck.tlp.label}',
color: Color(deck.tlp.foreground),
),
],
const Spacer(),
_StatusItem(
icon: Icons.folder_outlined,
label: exportLabel,
tooltip: exportDirectory ?? l10n.t('exportsNextToDeck'),
),
const SizedBox(width: 6),
_StatusAction(
icon: Icons.upload_file_outlined,
label: l10n.t('export'),
tooltip: exportTooltip,
onTap: onExport,
),
],
),
),
);
}
}
class _StatusItem extends StatelessWidget {
final IconData icon;
final String label;
final String tooltip;
final Color? color;
const _StatusItem({
required this.icon,
required this.label,
required this.tooltip,
this.color,
});
@override
Widget build(BuildContext context) {
final fg = color ?? Theme.of(context).colorScheme.onSurfaceVariant;
return Tooltip(
message: tooltip,
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 13, color: fg),
const SizedBox(width: 4),
ConstrainedBox(
constraints: const BoxConstraints(maxWidth: 210),
child: Text(
label,
overflow: TextOverflow.ellipsis,
style: TextStyle(
fontSize: 11,
color: fg,
fontWeight: color == null ? FontWeight.normal : FontWeight.w600,
),
),
),
],
),
);
}
}
class _StatusAction extends StatelessWidget {
final IconData icon;
final String label;
final String tooltip;
final Color? color;
final VoidCallback? onTap;
const _StatusAction({
required this.icon,
required this.label,
required this.tooltip,
this.color,
this.onTap,
});
@override
Widget build(BuildContext context) {
final enabled = onTap != null;
final fg = enabled
? (color ?? Theme.of(context).colorScheme.secondary)
: Theme.of(context).disabledColor;
return Tooltip(
message: tooltip,
child: InkWell(
onTap: onTap,
borderRadius: BorderRadius.circular(4),
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 3),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 13, color: fg),
const SizedBox(width: 4),
Text(
label,
style: TextStyle(
fontSize: 11,
color: fg,
fontWeight: enabled ? FontWeight.w600 : FontWeight.normal,
),
),
],
),
),
),
);
}
}
class _StatusDivider extends StatelessWidget {
const _StatusDivider();
@override
Widget build(BuildContext context) {
return Container(
width: 1,
height: 14,
margin: const EdgeInsets.symmetric(horizontal: 8),
color: Theme.of(context).colorScheme.outlineVariant,
);
}
}
/// Dunne verticale scheiding tussen groepen AppBar-knoppen.
class _ActionsDivider extends StatelessWidget {
const _ActionsDivider();
@override
Widget build(BuildContext context) {
return Container(
width: 1,
height: 20,
margin: const EdgeInsets.symmetric(horizontal: 6),
color: Colors.white24,
);
}
}
/// TLP-classificatie als altijd zichtbare, direct instelbare chip in de
/// AppBar-titel. Toont de huidige status in de officiële TLP-kleur en opent
/// bij klikken een keuzelijst met alle niveaus (incl. "Geen").
class _TlpChip extends StatelessWidget {
final TlpLevel tlp;
final ValueChanged<TlpLevel> onSelected;
const _TlpChip({required this.tlp, required this.onSelected});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final isSet = tlp != TlpLevel.none;
final fg = Color(tlp.foreground);
final child = Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 5),
decoration: BoxDecoration(
color: isSet ? Colors.black : Colors.transparent,
borderRadius: BorderRadius.circular(6),
border: Border.all(
color: isSet ? fg.withValues(alpha: 0.7) : Colors.white24,
),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (!isSet)
const Icon(Icons.shield_outlined, size: 14, color: Colors.white70),
if (!isSet) const SizedBox(width: 5),
Text(
isSet ? tlp.label : 'TLP',
style: TextStyle(
color: isSet ? fg : Colors.white70,
fontSize: 11.5,
fontWeight: FontWeight.w700,
fontFamily: 'monospace',
fontFamilyFallback: const ['Menlo', 'Consolas', 'Courier New'],
letterSpacing: 0.3,
),
),
Icon(
Icons.arrow_drop_down,
size: 16,
color: isSet ? fg : Colors.white54,
),
],
),
);
return PopupMenuButton<TlpLevel>(
tooltip: l10n.d('TLP-classificatie (Traffic Light Protocol)'),
position: PopupMenuPosition.under,
onSelected: onSelected,
itemBuilder: (_) => [
for (final level in TlpLevel.values)
PopupMenuItem<TlpLevel>(
value: level,
child: Row(
children: [
Container(
width: 14,
height: 14,
decoration: BoxDecoration(
color: level == TlpLevel.none
? Colors.transparent
: Color(level.foreground),
border: Border.all(color: const Color(0xFF94A3B8)),
borderRadius: BorderRadius.circular(3),
),
),
const SizedBox(width: 10),
Text(level == TlpLevel.none ? l10n.d('Geen') : level.label),
if (level == tlp) ...[
const SizedBox(width: 12),
const Spacer(),
const Icon(Icons.check, size: 16, color: Color(0xFF475569)),
],
],
),
),
],
child: child,
);
}
}

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// Part of the app_shell library — see ../app_shell.dart.
// Split out for navigability; all imports live in the main library file.
part of '../app_shell.dart';
class _AppTabBar extends StatelessWidget {
final TabsState tabsState;
final ValueChanged<int> onSelect;
final ValueChanged<int> onClose;
final VoidCallback onAdd;
const _AppTabBar({
required this.tabsState,
required this.onSelect,
required this.onClose,
required this.onAdd,
});
@override
Widget build(BuildContext context) {
final l10n = context.l10n;
final palette = Theme.of(context).extension<AppPalette>()!;
return Container(
height: 36,
color: palette.panel,
child: Row(
children: [
Expanded(
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
children: [
for (int i = 0; i < tabsState.tabs.length; i++)
_TabChip(
tab: tabsState.tabs[i],
isActive: i == tabsState.clampedIndex,
showClose:
tabsState.tabs.length > 1 || tabsState.tabs[i].isOpen,
panelText: palette.panelText,
accent: Theme.of(context).colorScheme.secondary,
onTap: () => onSelect(i),
onClose: () => onClose(i),
),
],
),
),
),
Tooltip(
message: l10n.t('newTab'),
child: InkWell(
onTap: onAdd,
child: SizedBox(
width: 36,
height: 36,
child: Icon(
Icons.add,
size: 16,
color: palette.panelText.withValues(alpha: 0.55),
),
),
),
),
],
),
);
}
}
class _TabChip extends StatelessWidget {
final TabInfo tab;
final bool isActive;
final bool showClose;
final VoidCallback onTap;
final VoidCallback onClose;
final Color panelText;
final Color accent;
const _TabChip({
required this.tab,
required this.isActive,
required this.showClose,
required this.onTap,
required this.onClose,
required this.panelText,
required this.accent,
});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Container(
constraints: const BoxConstraints(minWidth: 80, maxWidth: 200),
height: 36,
decoration: BoxDecoration(
color: isActive
? panelText.withValues(alpha: 0.12)
: Colors.transparent,
border: Border(
bottom: BorderSide(
color: isActive ? accent : Colors.transparent,
width: 2,
),
),
),
padding: const EdgeInsets.symmetric(horizontal: 10),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (tab.isDirty)
Container(
width: 6,
height: 6,
margin: const EdgeInsets.only(right: 5),
decoration: const BoxDecoration(
color: Colors.orangeAccent,
shape: BoxShape.circle,
),
),
Flexible(
child: Text(
tab.label,
style: TextStyle(
fontSize: 12,
color: isActive
? panelText
: panelText.withValues(alpha: 0.72),
fontWeight: isActive ? FontWeight.w600 : FontWeight.normal,
),
overflow: TextOverflow.ellipsis,
),
),
if (showClose) ...[
const SizedBox(width: 4),
InkWell(
onTap: onClose,
borderRadius: BorderRadius.circular(3),
child: Padding(
padding: const EdgeInsets.all(2),
child: Icon(
Icons.close,
size: 12,
color: panelText.withValues(alpha: 0.55),
),
),
),
],
],
),
),
);
}
}
// ── Per-tab content ───────────────────────────────────────────────────────────
class _TabContent extends ConsumerWidget {
const _TabContent();
@override
Widget build(BuildContext context, WidgetRef ref) {
final isOpen = ref.watch(deckProvider.select((s) => s.isOpen));
if (!isOpen) return const _WelcomeScreen();
return _MainLayout(exportService: ExportService());
}
}
// ── Welcome screen ────────────────────────────────────────────────────────────

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// Part of the app_shell library — see ../app_shell.dart.
// Split out for navigability; all imports live in the main library file.
part of '../app_shell.dart';
class _WelcomeScreen extends ConsumerWidget {
const _WelcomeScreen();
@override
Widget build(BuildContext context, WidgetRef ref) {
final l10n = context.l10n;
final theme = Theme.of(context);
final palette = theme.extension<AppPalette>()!;
final homeDir = ref.watch(settingsProvider.select((s) => s.homeDirectory));
final recentFiles = ref.watch(
settingsProvider.select((s) => s.recentFiles),
);
return Scaffold(
backgroundColor: theme.scaffoldBackgroundColor,
body: Row(
children: [
// ── Midden: logo + knoppen ─────────────────────────────────────
Expanded(
child: Align(
alignment: const Alignment(-0.15, 0.12),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Semantics(
label: 'De Winter Information Solutions',
image: true,
child: Image.asset(
'assets/images/de-winter-wittegeheel.png',
width: 320,
fit: BoxFit.contain,
filterQuality: FilterQuality.high,
),
),
const SizedBox(height: 36),
SizedBox(
width: 220,
child: ElevatedButton.icon(
onPressed: () => _newDeck(context, ref),
icon: const Icon(Icons.add, size: 18),
label: Text(l10n.t('newPresentation')),
),
),
const SizedBox(height: 12),
SizedBox(
width: 220,
child: OutlinedButton.icon(
onPressed: () => _openWithSearch(context, ref, homeDir),
icon: const Icon(Icons.folder_open_outlined, size: 18),
label: Text(l10n.t('open')),
),
),
const SizedBox(height: 8),
TextButton.icon(
onPressed: () => SettingsDialog.show(context),
icon: const Icon(Icons.settings_outlined, size: 17),
label: Text(l10n.t('settings')),
),
],
),
),
),
// ── Rechts: recente bestanden ──────────────────────────────────
if (recentFiles.isNotEmpty)
Container(
width: 280,
decoration: BoxDecoration(
color: theme.colorScheme.surface,
border: Border(
left: BorderSide(color: theme.colorScheme.outlineVariant),
),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(16, 20, 16, 10),
child: Text(
l10n.t('recentPresentations'),
style: TextStyle(
fontSize: 11,
fontWeight: FontWeight.w700,
color: palette.mutedText,
letterSpacing: 0.8,
),
),
),
Expanded(
child: ListView.builder(
padding: const EdgeInsets.only(bottom: 16),
itemCount: recentFiles.length,
itemBuilder: (_, i) {
final path = recentFiles[i];
final name = path.split('/').last.replaceAll('.md', '');
return InkWell(
onTap: () => ref
.read(tabsProvider.notifier)
.openFileByPath(path),
child: Padding(
padding: const EdgeInsets.symmetric(
horizontal: 16,
vertical: 10,
),
child: Row(
children: [
Icon(
Icons.slideshow_outlined,
size: 16,
color: theme.colorScheme.onSurfaceVariant,
),
const SizedBox(width: 10),
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: [
Text(
name,
style: TextStyle(
fontSize: 13,
fontWeight: FontWeight.w500,
color: theme.colorScheme.onSurface,
),
overflow: TextOverflow.ellipsis,
),
Text(
path,
style: TextStyle(
fontSize: 10,
color: palette.mutedText,
),
overflow: TextOverflow.ellipsis,
),
],
),
),
],
),
),
);
},
),
),
],
),
),
],
),
);
}
Future<void> _newDeck(BuildContext context, WidgetRef ref) async {
final title = await NewDeckDialog.show(context);
if (title != null) {
ref.read(tabsProvider.notifier).newDeckInCurrentTab(title);
}
}
}
// ── Main 2-panel layout ───────────────────────────────────────────────────────

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lib/widgets/slides/previews/bullets_previews.dart Normal file
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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _BulletsPreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _BulletsPreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final pad = w * 0.07;
// Slightly tighter top/bottom margin than the side margin so short
// checklists can grow into more of the slide height instead of leaving a
// wide empty band below the text.
final vPad = w * 0.05;
final safe = slide.showLogo ? _logoSafeInsets(w, profile) : EdgeInsets.zero;
final titleSize = w * 0.042;
final subtitleSize = w * 0.030;
final bulletSize = w * 0.026;
final spacing = pad * 0.5;
final bulletGap = w * 0.006;
final bullets = slide.bullets
.where((b) => b.trimLeft().isNotEmpty)
.toList();
final hasTitle = slide.title.isNotEmpty;
final subtitle = slide.subtitle;
final hasSubtitle = subtitle.isNotEmpty;
final showProgress =
slide.listStyle == ListStyle.checklist &&
slide.showChecklistProgress &&
bullets.isNotEmpty;
final slideHeight = w * 9 / 16;
final availW = (w - pad * 2).clamp(w * 0.12, w);
// The progress chart only needs a modest, fixed slot; give all remaining
// width to the bullets so the text can grow as large (and readable) as
// possible, especially on slides with many checklist items.
final progressGap = w * 0.025;
final progressW = w * 0.34;
final textAvailW = showProgress
? (availW - progressGap - progressW).clamp(w * 0.12, availW)
: availW;
final availH = slideHeight - (vPad + safe.top) - (vPad + safe.bottom);
// Grow (or, when needed, shrink) the text so it uses the full vertical
// space instead of leaving a large empty area below a few short bullets.
final scale = _bulletsFitScale(
availW: textAvailW,
availH: availH,
hasTitle: hasTitle,
title: slide.title,
bullets: bullets,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
font: font,
subtitle: subtitle,
subtitleSize: subtitleSize,
maxScale: _bulletScaleCap(w, bulletSize, _kSplitBulletsMaxScale),
listStyle: slide.listStyle,
);
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: SizedBox.expand(
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.topLeft,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.fromLTRB(
pad,
vPad + safe.top,
pad,
vPad + safe.bottom,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (hasTitle)
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
fontSize: titleSize * scale,
fontWeight: FontWeight.bold,
color: _hexColor(profile.textColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
if (hasSubtitle) ...[
SizedBox(height: spacing * scale * 0.4),
_md(
context,
subtitle,
_applyFont(
font,
TextStyle(
fontSize: subtitleSize * scale,
fontWeight: FontWeight.w600,
color: _hexColor(profile.accentColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
],
if ((hasTitle || hasSubtitle) && bullets.isNotEmpty)
SizedBox(height: spacing * scale),
Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: _BulletListColumn(
bullets: bullets,
listStyle: slide.listStyle,
font: font,
profile: profile,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: scale,
column: 0,
),
),
if (showProgress) ...[
SizedBox(width: progressGap),
SizedBox(
width: progressW,
child: Center(
child: _ChecklistProgress(
bullets: bullets,
w: w,
font: font,
profile: profile,
),
),
),
],
],
),
],
),
),
),
),
),
);
}
}
class _TwoBulletsPreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _TwoBulletsPreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
/// One bullet column with an optional heading above it. When any column has a
/// heading, an equal-height slot is reserved in both so the bullet lists line
/// up.
Widget _bulletColumn(
BuildContext context, {
required String title,
required List<String> bullets,
required double columnW,
required double headingSize,
required double headingSlotH,
required double headingGap,
required double bulletSize,
required double bulletGap,
required double scale,
required int column,
}) {
return SizedBox(
width: columnW,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (headingSlotH > 0) ...[
SizedBox(
width: double.infinity,
height: headingSlotH,
child: title.isEmpty
? null
: _md(
context,
title,
_applyFont(
font,
TextStyle(
fontSize: headingSize,
fontWeight: FontWeight.bold,
color: _hexColor(profile.accentColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
),
SizedBox(height: headingGap),
],
_BulletListColumn(
bullets: bullets,
listStyle: slide.listStyle,
font: font,
profile: profile,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: scale,
column: column,
),
],
),
);
}
@override
Widget build(BuildContext context) {
final pad = w * 0.065;
// Tighter top/bottom margin than the side margin so dense columns (e.g. a
// 19-item list) can use more of the slide height and stay readable.
final vPad = w * 0.045;
final safe = slide.showLogo ? _logoSafeInsets(w, profile) : EdgeInsets.zero;
final leftBullets = slide.bullets
.where((b) => b.trimLeft().isNotEmpty)
.toList();
final rightBullets = slide.bullets2
.where((b) => b.trimLeft().isNotEmpty)
.toList();
final hasTitle = slide.title.isNotEmpty;
// On dense slides (a long column drives the shared text size down) spend
// less of the height on the title, headings and inter-item gaps so the
// list items themselves can render larger and stay readable.
final dense = math.max(leftBullets.length, rightBullets.length) > 12;
final titleSize = w * (dense ? 0.034 : 0.04);
final bulletSize = w * 0.024;
final spacing = pad * (dense ? 0.28 : 0.38);
final bulletGap = w * (dense ? 0.0036 : 0.0055);
final columnGap = w * 0.055;
final col1Title = slide.columnTitle1.trim();
final col2Title = slide.columnTitle2.trim();
final hasColumnTitles = col1Title.isNotEmpty || col2Title.isNotEmpty;
final headingSize = w * (dense ? 0.023 : 0.03);
final headingGap = w * (dense ? 0.007 : 0.012);
final slideHeight = w * 9 / 16;
final contentW = (w - pad * 2).clamp(w * 0.12, w);
final columnW = ((contentW - columnGap) / 2).clamp(w * 0.12, w);
var availH = slideHeight - (vPad + safe.top) - (vPad + safe.bottom);
if (hasTitle) {
availH -= _measureTextHeight(
slide.title,
titleSize,
contentW,
bold: true,
fontFamily: font,
);
availH -= spacing;
}
// Reserve room for the (optional) column headings so the bullets still fit.
double headingHeight(String t) => t.isEmpty
? 0
: _measureTextHeight(
t,
headingSize,
columnW,
bold: true,
fontFamily: font,
);
final maxHeadingH = math.max(
headingHeight(col1Title),
headingHeight(col2Title),
);
if (hasColumnTitles) availH -= maxHeadingH + headingGap;
final leftScale = _bulletsFitScale(
availW: columnW,
availH: availH,
hasTitle: false,
title: '',
bullets: leftBullets,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
font: font,
maxScale: _bulletScaleCap(w, bulletSize, _kBulletsMaxScale),
listStyle: slide.listStyle,
);
final rightScale = _bulletsFitScale(
availW: columnW,
availH: availH,
hasTitle: false,
title: '',
bullets: rightBullets,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
font: font,
maxScale: _bulletScaleCap(w, bulletSize, _kBulletsMaxScale),
listStyle: slide.listStyle,
);
// Treat both columns as one composition: the busiest column determines
// the shared text size, so left and right never look typographically
// unrelated.
final columnScale = math.min(leftScale, rightScale);
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: SizedBox.expand(
child: Padding(
padding: EdgeInsets.fromLTRB(
pad,
vPad + safe.top,
pad,
vPad + safe.bottom,
),
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.topLeft,
child: SizedBox(
width: contentW,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (hasTitle)
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
fontSize: titleSize,
fontWeight: FontWeight.bold,
color: _hexColor(profile.textColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
if (hasTitle) SizedBox(height: spacing),
if (slide.listStyle == ListStyle.checklist &&
slide.showChecklistProgress &&
(leftBullets.isNotEmpty || rightBullets.isNotEmpty)) ...[
Align(
alignment: Alignment.center,
child: SizedBox(
width: contentW * 0.5,
child: _ChecklistProgress(
bullets: [...leftBullets, ...rightBullets],
w: w,
font: font,
profile: profile,
),
),
),
SizedBox(height: spacing),
],
Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
_bulletColumn(
context,
title: col1Title,
bullets: leftBullets,
columnW: columnW,
headingSize: headingSize,
headingSlotH: hasColumnTitles ? maxHeadingH : 0,
headingGap: headingGap,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: columnScale,
column: 0,
),
SizedBox(width: columnGap),
_bulletColumn(
context,
title: col2Title,
bullets: rightBullets,
columnW: columnW,
headingSize: headingSize,
headingSlotH: hasColumnTitles ? maxHeadingH : 0,
headingGap: headingGap,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: columnScale,
column: 1,
),
],
),
],
),
),
),
),
),
);
}
}
class _BulletsImagePreview extends StatelessWidget {
final Slide slide;
final double w;
final String? projectPath;
final String font;
final ThemeProfile profile;
const _BulletsImagePreview({
required this.slide,
required this.w,
this.projectPath,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final leftPad = w * 0.038;
final verticalPad = w * 0.042;
// Keep the gap between the text column and the image equal to the slide's
// left margin so the layout stays symmetric.
final gap = leftPad;
final safe = slide.showLogo
? _splitTextLogoSafeInsets(w, profile)
: EdgeInsets.zero;
final imgFraction = (slide.imageSize > 0 ? slide.imageSize / 100.0 : 0.40)
.clamp(0.1, 0.70);
final imgWidth = w * imgFraction;
final bulletSize = w * 0.031;
final titleSize = w * 0.042;
final spacing = verticalPad * 0.32;
final bulletGap = w * 0.005;
final bullets = slide.bullets
.where((b) => b.trimLeft().isNotEmpty)
.toList();
final hasTitle = slide.title.isNotEmpty;
// The slide is always rendered 16:9, so the available area for the text
// column is fully determined by the width. Computing it directly (instead
// of via a LayoutBuilder) keeps the widget tree identical to the image
// side and avoids any layout-timing surprises.
final slideHeight = w * 9 / 16;
final availW = (w - imgWidth - gap - leftPad).clamp(w * 0.12, w);
final availH =
slideHeight - (verticalPad + safe.top) - (verticalPad + safe.bottom);
// Pick the largest font scale (capped at the design size) whose content
// still fits the available height at the full column width. This keeps the
// text as large as possible and lets it span the full width toward the
// image, instead of uniformly shrinking and leaving a wide gap.
final scale = _bulletsFitScale(
availW: availW,
availH: availH,
hasTitle: hasTitle,
title: slide.title,
bullets: bullets,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
font: font,
maxScale: _bulletScaleCap(w, bulletSize, _kBulletsMaxScale),
listStyle: slide.listStyle,
);
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: Stack(
children: [
Positioned(
top: 0,
right: 0,
bottom: 0,
width: imgWidth,
child: Stack(
fit: StackFit.expand,
children: [
_resolvedImage(context, slide.imagePath, projectPath),
_captionOverlay(context, slide.imageCaption, w),
],
),
),
Positioned(
top: 0,
left: 0,
right: imgWidth + gap,
bottom: 0,
child: Padding(
padding: EdgeInsets.fromLTRB(
leftPad,
verticalPad + safe.top,
0,
verticalPad + safe.bottom,
),
// FittedBox stays as a safety net for measurement rounding; with
// an accurate scale it renders at scale 1 (full width).
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.topLeft,
child: SizedBox(
width: availW,
child: _contentColumn(
context: context,
scale: scale,
bullets: bullets,
hasTitle: hasTitle,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
),
),
),
),
),
],
),
);
}
Widget _contentColumn({
required BuildContext context,
required double scale,
required List<String> bullets,
required bool hasTitle,
required double titleSize,
required double bulletSize,
required double spacing,
required double bulletGap,
}) {
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (hasTitle)
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
fontSize: titleSize * scale,
fontWeight: FontWeight.bold,
color: _hexColor(profile.textColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
if (hasTitle && bullets.isNotEmpty) SizedBox(height: spacing * scale),
if (slide.listStyle == ListStyle.checklist &&
slide.showChecklistProgress &&
bullets.isNotEmpty) ...[
_ChecklistProgress(
bullets: bullets,
w: w,
font: font,
profile: profile,
),
SizedBox(height: spacing * scale),
],
...bullets.asMap().entries.map((entry) {
final b = entry.value;
int level = 0;
while (level < b.length && b[level] == '\t') {
level++;
}
final text = slide.listStyle == ListStyle.checklist
? checklistItemText(b)
: b.substring(level);
final checked =
slide.listStyle == ListStyle.checklist && checklistItemChecked(b);
final fontSize = bulletSize * _bulletLevelScale(level) * scale;
return _ChecklistBulletRow(
bullets: bullets,
itemIndex: entry.key,
column: 0,
listStyle: slide.listStyle,
checked: checked,
text: text,
level: level,
fontSize: fontSize,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: scale,
font: font,
profile: profile,
);
}),
],
);
}
}
class _BulletListColumn extends StatelessWidget {
final List<String> bullets;
final ListStyle listStyle;
final String font;
final ThemeProfile profile;
final double bulletSize;
final double bulletGap;
final double scale;
final int column;
const _BulletListColumn({
required this.bullets,
required this.listStyle,
required this.font,
required this.profile,
required this.bulletSize,
required this.bulletGap,
required this.scale,
this.column = 0,
});
@override
Widget build(BuildContext context) {
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
...bullets.asMap().entries.map((entry) {
final b = entry.value;
int level = 0;
while (level < b.length && b[level] == '\t') {
level++;
}
final text = listStyle == ListStyle.checklist
? checklistItemText(b)
: b.substring(level);
final checked =
listStyle == ListStyle.checklist && checklistItemChecked(b);
final fontSize = bulletSize * _bulletLevelScale(level) * scale;
return _ChecklistBulletRow(
bullets: bullets,
itemIndex: entry.key,
column: column,
listStyle: listStyle,
checked: checked,
text: text,
level: level,
fontSize: fontSize,
bulletSize: bulletSize,
bulletGap: bulletGap,
scale: scale,
font: font,
profile: profile,
);
}),
],
);
}
}
/// Upper bound for growing bullet text to fill otherwise empty vertical space.
const double _kBulletsMaxScale = 3.2;
/// Split slides have a much narrower column, so short bullet lists can stay
/// visually timid unless they are allowed to grow a little further.
const double _kSplitBulletsMaxScale = 4.35;
/// Hard ceiling for the *rendered* bullet text size when auto-growing, as a
/// fraction of the slide width: ≈32pt on a standard 16:9 deck (PowerPoint's
/// 960pt-wide canvas). Presentation-design guidance consistently puts body
/// text at 24–32pt — beyond that it stops aiding readability and starts
/// competing with the title. The fit scale multiplies title and bullets
/// alike, so capping the bullet size also keeps the hierarchy intact.
const double _kBulletMaxFontFraction = 0.0335;
/// The largest auto-fit scale that keeps bullets at or under
/// [_kBulletMaxFontFraction], given the layout's own [layoutMax] growth bound.
double _bulletScaleCap(double w, double bulletSize, double layoutMax) =>
math.min(layoutMax, _kBulletMaxFontFraction * w / bulletSize);
/// Line height used for bullet body text, shared by rendering and measuring.
const double _kBulletLineHeight = 1.16;
String _bulletMarkerForLevel(int level) {
const markers = ['•', '◦', '▪', '▫', '–'];
return markers[level.clamp(0, markers.length - 1)];
}
String _listMarker(List<String> items, int index, ListStyle style) {
int levelOf(String item) {
var level = 0;
while (level < item.length && item[level] == '\t') {
level++;
}
return level;
}
final level = levelOf(items[index]);
if (style == ListStyle.bullets) return _bulletMarkerForLevel(level);
if (style == ListStyle.checklist) {
return checklistItemChecked(items[index]) ? '☑' : '☐';
}
var number = 0;
for (var i = 0; i <= index; i++) {
final itemLevel = levelOf(items[i]);
if (itemLevel == level) number++;
if (itemLevel < level) number = 0;
}
return '$number.';
}
double _bulletLevelScale(int level) {
if (level <= 0) return 1.0;
if (level == 1) return 0.86;
if (level == 2) return 0.80;
return 0.76;
}
/// Largest scale in [minScale, maxScale] for which the bullet block fits
/// [availH] at the full column width. Unlike a plain `BoxFit.scaleDown`, this
/// also grows the text *above* its design size when there is spare vertical
/// room, so short slides use the full height instead of clustering at the top.
double _bulletsFitScale({
required double availW,
required double availH,
required bool hasTitle,
required String title,
required List<String> bullets,
required double titleSize,
required double bulletSize,
required double spacing,
required double bulletGap,
required String font,
String subtitle = '',
double subtitleSize = 0,
double minScale = 0.2,
double maxScale = 1.0,
ListStyle listStyle = ListStyle.bullets,
}) {
if (availW <= 0 || !availH.isFinite || availH <= 0) return 1.0;
// 2% safety margin so minor measurement differences never overflow.
final budget = availH * 0.98;
double measure(double scale) => _bulletsBlockHeight(
scale: scale,
availW: availW,
listStyle: listStyle,
hasTitle: hasTitle,
title: title,
bullets: bullets,
titleSize: titleSize,
bulletSize: bulletSize,
spacing: spacing,
bulletGap: bulletGap,
font: font,
subtitle: subtitle,
subtitleSize: subtitleSize,
);
// Everything already fits at the largest allowed size → use it.
if (measure(maxScale) <= budget) return maxScale;
// Otherwise binary-search the largest scale that fits. Search upward from the
// design size when it fits, downward when even the design size overflows.
double lo, hi;
if (maxScale > 1.0 && measure(1.0) <= budget) {
lo = 1.0;
hi = maxScale;
} else {
lo = minScale;
hi = maxScale > 1.0 ? 1.0 : maxScale;
}
for (var i = 0; i < 24; i++) {
final mid = (lo + hi) / 2;
if (measure(mid) <= budget) {
lo = mid;
} else {
hi = mid;
}
}
return lo;
}
double _bulletsBlockHeight({
required double scale,
required double availW,
required bool hasTitle,
required String title,
required List<String> bullets,
required double titleSize,
required double bulletSize,
required double spacing,
required double bulletGap,
required String font,
String subtitle = '',
double subtitleSize = 0,
ListStyle listStyle = ListStyle.bullets,
}) {
var height = 0.0;
if (hasTitle) {
height += _measureTextHeight(
title,
titleSize * scale,
availW,
bold: true,
fontFamily: font,
);
}
if (subtitle.isNotEmpty) {
height += spacing * scale * 0.4;
height += _measureTextHeight(
subtitle,
subtitleSize * scale,
availW,
bold: true,
fontFamily: font,
);
}
if ((hasTitle || subtitle.isNotEmpty) && bullets.isNotEmpty) {
height += spacing * scale;
}
for (var i = 0; i < bullets.length; i++) {
final b = bullets[i];
int level = 0;
while (level < b.length && b[level] == '\t') {
level++;
}
// Measure exactly what gets rendered: checklists strip the `[x] ` prefix
// and use a checkbox marker, numbered lists use `N.`. Measuring the raw
// string with a bullet marker over-counts the height and would shrink the
// text below the space it actually needs.
final text = listStyle == ListStyle.checklist
? checklistItemText(b)
: b.substring(level);
final fontSize = bulletSize * _bulletLevelScale(level) * scale;
final indent = level * bulletSize * 1.05 * scale;
final marker = '${_listMarker(bullets, i, listStyle)} ';
final markerW = _measureTextWidth(
marker,
fontSize,
bold: true,
fontFamily: font,
);
final wrapW = (availW - indent - markerW).clamp(1.0, availW);
final textH = _measureTextHeight(
text,
fontSize,
wrapW,
lineHeight: _kBulletLineHeight,
fontFamily: font,
);
final markerH = _measureTextHeight(
marker,
fontSize,
double.infinity,
fontFamily: font,
);
height += bulletGap * scale * 2 + (textH > markerH ? textH : markerH);
}
return height;
}
double _measureTextHeight(
String text,
double fontSize,
double maxWidth, {
double? lineHeight,
bool bold = false,
String? fontFamily,
}) {
final painter = TextPainter(
text: TextSpan(
text: stripInlineMarkdown(text),
style: TextStyle(
fontFamily: fontFamily,
fontSize: fontSize,
height: lineHeight,
fontWeight: bold ? FontWeight.bold : null,
),
),
textDirection: TextDirection.ltr,
)..layout(maxWidth: maxWidth.isFinite ? maxWidth : double.infinity);
return painter.height;
}
double _measureTextWidth(
String text,
double fontSize, {
bool bold = false,
String? fontFamily,
}) {
final painter = TextPainter(
text: TextSpan(
text: stripInlineMarkdown(text),
style: TextStyle(
fontFamily: fontFamily,
fontSize: fontSize,
fontWeight: bold ? FontWeight.bold : null,
),
),
textDirection: TextDirection.ltr,
)..layout();
return painter.width;
}

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _ChecklistProgress extends StatelessWidget {
final List<String> bullets;
final double w;
final String font;
final ThemeProfile profile;
const _ChecklistProgress({
required this.bullets,
required this.w,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final items = bullets
.where((bullet) => checklistItemText(bullet).trim().isNotEmpty)
.toList();
final checked = items.where(checklistItemChecked).length;
final total = items.length;
final checkedPercent = total == 0 ? 0 : ((checked / total) * 100).round();
final openPercent = total == 0 ? 0 : 100 - checkedPercent;
final textColor = _hexColor(profile.textColor);
final checkedColor = _hexColor(profile.checklistCheckedColor);
final openColor = _hexColor(profile.checklistUncheckedColor);
final labelStyle = _applyFont(
font,
TextStyle(
fontSize: w * 0.0125,
height: 1.2,
color: textColor,
fontWeight: FontWeight.w600,
),
);
final interaction = _ChecklistInteractionScope.maybeOf(context);
return LayoutBuilder(
builder: (context, constraints) {
// Grow the pie to fill the width it is handed instead of staying at a
// fixed, tiny size. Every caller gives this widget a bounded column
// width, so the chart now scales with the space that is actually
// available next to (or above) the bullets.
final maxW = constraints.maxWidth.isFinite
? constraints.maxWidth
: w * 0.4;
// Cap the pie so it stays a balanced companion to the bullet column
// rather than dominating it: a smaller chart keeps the visual split
// closer to 50/50 and, crucially, never forces the surrounding text to
// shrink to fit the chart's height when a slide has many bullets.
final diameter = maxW.clamp(w * 0.22, w * 0.30).toDouble();
final baseRadius = diameter * 0.44;
final hoverRadius = diameter * 0.48;
final pieTitleStyle = _applyFont(
font,
TextStyle(
fontSize: diameter * 0.085,
height: 1.1,
fontWeight: FontWeight.bold,
color: textColor,
),
);
Widget pie(bool? hovered) => PieChart(
key: const ValueKey('checklist-progress-pie'),
PieChartData(
sectionsSpace: w * 0.002,
centerSpaceRadius: 0,
startDegreeOffset: -90,
sections: [
if (checkedPercent > 0)
PieChartSectionData(
value: checkedPercent.toDouble(),
color: checkedColor,
radius: hovered == true ? hoverRadius : baseRadius,
title: '$checkedPercent%',
titleStyle: pieTitleStyle.copyWith(color: Colors.white),
),
if (openPercent > 0)
PieChartSectionData(
value: openPercent.toDouble(),
color: openColor,
radius: hovered == false ? hoverRadius : baseRadius,
title: '$openPercent%',
titleStyle: pieTitleStyle,
),
],
pieTouchData: PieTouchData(
enabled: interaction?.enabled == true,
touchCallback: (event, response) {
if (interaction?.enabled != true) return;
final index = event.isInterestedForInteractions
? response?.touchedSection?.touchedSectionIndex
: null;
if (index == null) {
interaction!.hovered.value = null;
} else if (checkedPercent == 0) {
interaction!.hovered.value = false;
} else {
interaction!.hovered.value = index == 0;
}
},
),
),
duration: Duration.zero,
);
return Semantics(
label:
'${context.l10n.d('Afgevinkt')} $checkedPercent%, '
'${context.l10n.d('Niet afgevinkt')} $openPercent%',
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
SizedBox(
width: diameter,
height: diameter,
child: interaction == null
? pie(null)
: ValueListenableBuilder<bool?>(
valueListenable: interaction.hovered,
builder: (_, hovered, _) => pie(hovered),
),
),
SizedBox(height: w * 0.008),
MouseRegion(
key: const ValueKey('checklist-progress-checked'),
onEnter: interaction?.enabled != true
? null
: (_) => interaction!.hovered.value = true,
onExit: interaction?.enabled != true
? null
: (_) => interaction!.hovered.value = null,
child: Text(
'${context.l10n.d('Afgevinkt')} $checkedPercent%',
style: labelStyle,
),
),
MouseRegion(
key: const ValueKey('checklist-progress-unchecked'),
onEnter: interaction?.enabled != true
? null
: (_) => interaction!.hovered.value = false,
onExit: interaction?.enabled != true
? null
: (_) => interaction!.hovered.value = null,
child: Text(
'${context.l10n.d('Niet afgevinkt')} $openPercent%',
style: labelStyle.copyWith(
color: textColor.withValues(alpha: 0.7),
),
),
),
],
),
);
},
);
}
}
class _ChecklistBulletRow extends StatelessWidget {
final List<String> bullets;
final int itemIndex;
final int column;
final ListStyle listStyle;
final bool checked;
final String text;
final int level;
final double fontSize;
final double bulletSize;
final double bulletGap;
final double scale;
final String font;
final ThemeProfile profile;
const _ChecklistBulletRow({
required this.bullets,
required this.itemIndex,
required this.column,
required this.listStyle,
required this.checked,
required this.text,
required this.level,
required this.fontSize,
required this.bulletSize,
required this.bulletGap,
required this.scale,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final interaction = _ChecklistInteractionScope.maybeOf(context);
Widget row(bool highlighted) => AnimatedContainer(
key: ValueKey('checklist-preview-item-$column-$itemIndex'),
duration: const Duration(milliseconds: 140),
padding: EdgeInsets.symmetric(horizontal: highlighted ? wScale(6) : 0),
decoration: BoxDecoration(
color: highlighted
? _hexColor(profile.accentColor).withValues(alpha: 0.16)
: Colors.transparent,
borderRadius: BorderRadius.circular(wScale(5)),
),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
GestureDetector(
key: ValueKey('checklist-preview-toggle-$column-$itemIndex'),
behavior: HitTestBehavior.opaque,
onTap:
listStyle == ListStyle.checklist && interaction?.enabled == true
? () => interaction!.onToggle?.call(column, itemIndex)
: null,
child: MouseRegion(
cursor:
listStyle == ListStyle.checklist &&
interaction?.enabled == true
? SystemMouseCursors.click
: MouseCursor.defer,
child: Text(
'${_listMarker(bullets, itemIndex, listStyle)} ',
style: TextStyle(
fontSize: fontSize,
color: _hexColor(profile.accentColor),
fontWeight: FontWeight.bold,
),
),
),
),
Expanded(
child: _md(
context,
text,
_applyFont(
font,
TextStyle(
fontSize: fontSize,
height: _kBulletLineHeight,
color: _hexColor(profile.textColor),
decoration: checked && profile.checklistStrikeThrough
? TextDecoration.lineThrough
: null,
decorationColor: _hexColor(profile.textColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
),
],
),
);
final padded = Padding(
padding: EdgeInsets.only(
left: level * bulletSize * 1.05 * scale,
top: bulletGap * scale,
bottom: bulletGap * scale,
),
child: interaction == null || listStyle != ListStyle.checklist
? row(false)
: ValueListenableBuilder<bool?>(
valueListenable: interaction.hovered,
builder: (_, hovered, _) => row(hovered == checked),
),
);
return padded;
}
double wScale(double value) => value * scale;
}
class _ChecklistInteractionHost extends StatefulWidget {
final bool enabled;
final void Function(int column, int itemIndex)? onToggle;
final Widget child;
const _ChecklistInteractionHost({
required this.enabled,
required this.onToggle,
required this.child,
});
@override
State<_ChecklistInteractionHost> createState() =>
_ChecklistInteractionHostState();
}
class _ChecklistInteractionHostState extends State<_ChecklistInteractionHost> {
final ValueNotifier<bool?> hovered = ValueNotifier(null);
@override
void dispose() {
hovered.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return _ChecklistInteractionScope(
enabled: widget.enabled,
hovered: hovered,
onToggle: widget.onToggle,
child: widget.child,
);
}
}
class _ChecklistInteractionScope extends InheritedWidget {
final bool enabled;
final ValueNotifier<bool?> hovered;
final void Function(int column, int itemIndex)? onToggle;
const _ChecklistInteractionScope({
required this.enabled,
required this.hovered,
required this.onToggle,
required super.child,
});
static _ChecklistInteractionScope? maybeOf(BuildContext context) =>
context.dependOnInheritedWidgetOfExactType<_ChecklistInteractionScope>();
@override
bool updateShouldNotify(_ChecklistInteractionScope oldWidget) =>
enabled != oldWidget.enabled || onToggle != oldWidget.onToggle;
}

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
/// Een 'broncode-sheet': de code op een donker editor-vlak, met
/// syntaxkleuring wanneer een taal bekend is. De tekst blijft platte tekst maar
/// wordt monospace en gekleurd weergegeven. Past zich met een FittedBox aan de
/// slide aan zodat lange fragmenten netjes verkleinen i.p.v. af te kappen.
class _CodePreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _CodePreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
/// Natural (unwrapped) size of [text] in [style]: width is the longest line,
/// height the full block. Used to scale code to the available space.
static Size _measureMono(String text, TextStyle style) {
final painter = TextPainter(
text: TextSpan(text: text.isEmpty ? ' ' : text, style: style),
textDirection: TextDirection.ltr,
)..layout();
return painter.size;
}
@override
Widget build(BuildContext context) {
_ensureHighlightLanguages();
final pad = w * 0.05;
final safe = slide.showLogo ? _logoSafeInsets(w, profile) : EdgeInsets.zero;
final code = slide.customMarkdown;
final lang = slide.codeLanguage.trim();
final known = lang.isNotEmpty && allLanguages.containsKey(lang);
final codeBg = _hexColor(profile.codeBackgroundColor);
final codeFg = _hexColor(profile.codeTextColor);
// The chosen monospace family, always backed by a generic monospace fallback
// so an uninstalled face still renders fixed-width.
final fallback = <String>['Menlo', 'Consolas', 'Courier New', 'monospace']
..removeWhere((f) => f == profile.codeFontFamily);
final baseFont = w * 0.024;
final maxFont = w * 0.040; // grow to fill, but never huge
TextStyle monoAt(double size) => TextStyle(
fontFamily: profile.codeFontFamily,
fontFamilyFallback: fallback,
fontSize: size,
height: 1.4,
color: codeFg,
);
// HighlightView throws on an unknown language, so fall back to plain (but
// monospace) text. When syntax highlighting is off we always render plain
// text so the whole block is one colour — needed for a CRT-green screen.
final useHighlight = known && profile.codeHighlightSyntax;
final highlightTheme = {
...atomOneDarkTheme,
// Keep atom-one-dark's per-token colours but drop its own background so
// our themed [codeBg] shows through unchanged.
'root': (atomOneDarkTheme['root'] ?? const TextStyle()).copyWith(
backgroundColor: codeBg,
color: codeFg,
),
};
Widget buildCode(TextStyle style) => useHighlight
? HighlightView(
code,
language: lang,
theme: highlightTheme,
padding: EdgeInsets.zero,
textStyle: style,
)
: Text(code, style: style);
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: Padding(
padding: EdgeInsets.fromLTRB(
pad,
pad + safe.top,
pad,
pad + safe.bottom,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
// The slide title belongs to the slide, not inside the code window,
// so it sits above the panel like other slide types.
if (slide.title.isNotEmpty) ...[
Container(
width: double.infinity,
padding: EdgeInsets.symmetric(
horizontal: w * 0.025,
vertical: w * 0.01,
),
decoration: BoxDecoration(
color: _hexColor(profile.titleBackgroundColor),
borderRadius: BorderRadius.circular(w * 0.012),
border: Border(
left: BorderSide(
color: _hexColor(profile.accentColor),
width: w * 0.006,
),
),
),
child: _md(
context,
slide.title,
_applyFont(
font,
TextStyle(
fontSize: w * 0.032,
height: 1.1,
fontWeight: FontWeight.bold,
color: _hexColor(profile.titleTextColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
),
SizedBox(height: w * 0.018),
],
Expanded(
child: Container(
width: double.infinity,
decoration: BoxDecoration(
color: codeBg,
borderRadius: BorderRadius.circular(w * 0.012),
border: Border.all(color: codeFg.withValues(alpha: 0.22)),
),
padding: EdgeInsets.all(w * 0.03),
child: LayoutBuilder(
builder: (context, constraints) {
// Size the code to fill the panel: scale up to use spare
// space (capped at [maxFont]) and down so long fragments
// still fit, rather than leaving a small block in a big box.
final measured = useHighlight
? code.replaceAll('\t', ' ')
: code;
final natural = _measureMono(measured, monoAt(baseFont));
final availW = math.max(1.0, constraints.maxWidth - 1);
final availH = math.max(1.0, constraints.maxHeight - 1);
var scale = math.min(
availW / natural.width,
availH / natural.height,
);
if (!scale.isFinite || scale <= 0) scale = 1;
final size = math.min(baseFont * scale, maxFont);
return Align(
alignment: Alignment.topLeft,
child: buildCode(monoAt(size)),
);
},
),
),
),
],
),
),
);
}
}
/// Register highlight.js language definitions once, so [HighlightView] can
/// colour any common language without throwing.
bool _highlightReady = false;
void _ensureHighlightLanguages() {
if (_highlightReady) return;
allLanguages.forEach(highlight.registerLanguage);
_highlightReady = true;
}
// ── Shared helper ─────────────────────────────────────────────────────────────

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _AudioPlayback extends StatefulWidget {
final String audioPath;
final String? projectPath;
final bool autoplay;
final double w;
final VoidCallback? onComplete;
const _AudioPlayback({
required this.audioPath,
required this.projectPath,
required this.autoplay,
required this.w,
this.onComplete,
});
@override
State<_AudioPlayback> createState() => _AudioPlaybackState();
}
class _AudioPlaybackState extends State<_AudioPlayback> {
VideoPlayerController? _controller;
bool _completed = false;
@override
void initState() {
super.initState();
_init();
}
@override
void didUpdateWidget(_AudioPlayback oldWidget) {
super.didUpdateWidget(oldWidget);
if (oldWidget.audioPath != widget.audioPath ||
oldWidget.autoplay != widget.autoplay) {
_init();
}
}
Future<void> _init() async {
_controller?.removeListener(_onTick);
await _controller?.dispose();
_completed = false;
final path = _resolvePath(widget.audioPath, widget.projectPath);
if (path == null) return;
final controller = VideoPlayerController.file(File(path));
_controller = controller;
try {
await controller.initialize();
controller.addListener(_onTick);
if (widget.autoplay) await controller.play();
} catch (e) {
logWarning('_AudioPlaybackState._init: audio controller init failed', e);
}
if (mounted) setState(() {});
}
/// Detecteer het einde van de audio en meld dat één keer (voor auto-advance).
void _onTick() {
final c = _controller;
if (c == null || !c.value.isInitialized || _completed) return;
final pos = c.value.position;
final dur = c.value.duration;
if (dur > Duration.zero &&
pos.inMilliseconds >= dur.inMilliseconds - 200 &&
!c.value.isPlaying) {
_completed = true;
widget.onComplete?.call();
}
}
@override
void dispose() {
_controller?.removeListener(_onTick);
_controller?.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
final controller = _controller;
return Positioned(
right: widget.w * 0.035,
bottom: widget.w * 0.035,
child: IconButton(
tooltip: 'Audio',
onPressed: controller == null || !controller.value.isInitialized
? null
: () {
setState(() {
controller.value.isPlaying
? controller.pause()
: controller.play();
});
},
icon: Icon(
controller?.value.isPlaying == true
? Icons.volume_up
: Icons.volume_up_outlined,
),
iconSize: widget.w * 0.032,
),
);
}
}
// ── Individual slide-type renderers ──────────────────────────────────────────
class _TwoImagesPreview extends StatelessWidget {
final Slide slide;
final double w;
final String? projectPath;
final String font;
final ThemeProfile profile;
const _TwoImagesPreview({
required this.slide,
required this.w,
this.projectPath,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final splitFraction = (slide.imageSize > 0 ? slide.imageSize / 100.0 : 0.5)
.clamp(0.1, 0.9);
final leftW = w * splitFraction;
final rightW = w * (1 - splitFraction);
final titleSize = w * 0.032;
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: Stack(
fit: StackFit.expand,
children: [
// Twee afbeeldingen naast elkaar
Row(
children: [
SizedBox(
width: leftW,
child: Stack(
fit: StackFit.expand,
children: [
_resolvedImage(context, slide.imagePath, projectPath),
_captionOverlay(context, slide.imageCaption, w),
],
),
),
SizedBox(
width: rightW,
child: Stack(
fit: StackFit.expand,
children: [
_resolvedImage(context, slide.imagePath2, projectPath),
_captionOverlay(context, slide.imageCaption2, w),
],
),
),
],
),
// Optionele ondertitel
if (slide.title.isNotEmpty)
Positioned(
left: 0,
right: 0,
bottom: w * 0.04,
child: Container(
color: Colors.black54,
padding: EdgeInsets.symmetric(
horizontal: w * 0.04,
vertical: w * 0.015,
),
child: _md(
context,
slide.title,
_applyFont(
font,
TextStyle(
color: Colors.white,
fontSize: titleSize,
fontWeight: FontWeight.w500,
),
),
linkColor: const Color(0xFF8BB8FF),
textAlign: TextAlign.center,
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
),
],
),
);
}
}
class _ImagePreview extends StatelessWidget {
final Slide slide;
final double w;
final String? projectPath;
final String font;
final ThemeProfile profile;
const _ImagePreview({
required this.slide,
required this.w,
this.projectPath,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final hasTitle = slide.title.isNotEmpty;
return Stack(
fit: StackFit.expand,
children: [
_zoomedImage(
context,
slide.imagePath,
projectPath,
slide.imageSize,
bgColor: _hexColor(profile.slideBackgroundColor),
// When zoomed out, anchor the image to the top so the bottom title
// banner sits in the freed-up space instead of over the picture.
alignment: hasTitle ? Alignment.topCenter : Alignment.center,
),
if (slide.title.isNotEmpty)
Positioned(
left: w * 0.06,
right: w * 0.06,
bottom: w * 0.06,
child: Container(
padding: EdgeInsets.symmetric(
horizontal: w * 0.04,
vertical: w * 0.02,
),
decoration: BoxDecoration(
color: Colors.black54,
borderRadius: BorderRadius.circular(4),
),
child: _md(
context,
slide.title,
_applyFont(
font,
TextStyle(
color: Colors.white,
fontSize: w * 0.038,
fontWeight: FontWeight.bold,
),
),
linkColor: const Color(0xFF8BB8FF),
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
),
_captionOverlay(context, slide.imageCaption, w),
],
);
}
}
class _VideoPreview extends StatefulWidget {
final Slide slide;
final double w;
final String? projectPath;
final String font;
final ThemeProfile profile;
final bool autoplay;
final VoidCallback? onComplete;
const _VideoPreview({
required this.slide,
required this.w,
this.projectPath,
required this.font,
required this.profile,
this.autoplay = false,
this.onComplete,
});
@override
State<_VideoPreview> createState() => _VideoPreviewState();
}
class _VideoPreviewState extends State<_VideoPreview> {
VideoPlayerController? _controller;
String? _path;
bool _completed = false;
@override
void initState() {
super.initState();
_init();
}
@override
void didUpdateWidget(_VideoPreview oldWidget) {
super.didUpdateWidget(oldWidget);
if (oldWidget.slide.videoPath != widget.slide.videoPath ||
oldWidget.autoplay != widget.autoplay) {
_init();
}
}
Future<void> _init() async {
_controller?.removeListener(_onTick);
await _controller?.dispose();
_controller = null;
_completed = false;
_path = _resolvePath(widget.slide.videoPath, widget.projectPath);
if (_path == null) {
if (mounted) setState(() {});
return;
}
final controller = VideoPlayerController.file(File(_path!));
_controller = controller;
try {
await controller.initialize();
controller.addListener(_onTick);
await controller.setLooping(false);
if (widget.autoplay) await controller.play();
} catch (e) {
logWarning('_VideoPreviewState._init: video controller init failed', e);
// Keep the placeholder visible when the platform cannot open the file.
}
if (mounted) setState(() {});
}
void _onTick() {
final controller = _controller;
if (controller == null ||
!controller.value.isInitialized ||
_completed ||
!widget.autoplay) {
return;
}
final duration = controller.value.duration;
final position = controller.value.position;
if (duration > Duration.zero &&
position.inMilliseconds >= duration.inMilliseconds - 200 &&
!controller.value.isPlaying) {
_completed = true;
widget.onComplete?.call();
}
}
@override
void dispose() {
_controller?.removeListener(_onTick);
_controller?.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
final controller = _controller;
return Container(
color: _hexColor(widget.profile.slideBackgroundColor),
child: Stack(
fit: StackFit.expand,
children: [
if (controller != null && controller.value.isInitialized)
Center(
child: AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: VideoPlayer(controller),
),
)
else
_mediaPlaceholder(Icons.movie_outlined, 'Video'),
if (widget.slide.title.isNotEmpty)
Positioned(
left: widget.w * 0.06,
right: widget.w * 0.06,
top: widget.w * 0.04,
child: _md(
context,
widget.slide.title,
_applyFont(
widget.font,
TextStyle(
color: _hexColor(widget.profile.textColor),
fontSize: widget.w * 0.038,
fontWeight: FontWeight.bold,
),
),
linkColor: _hexColor(widget.profile.accentColor),
),
),
Positioned(
left: widget.w * 0.04,
bottom: widget.w * 0.035,
child: IconButton(
onPressed: controller == null || !controller.value.isInitialized
? null
: () {
setState(() {
controller.value.isPlaying
? controller.pause()
: controller.play();
});
},
icon: Icon(
controller?.value.isPlaying == true
? Icons.pause_circle
: Icons.play_circle,
),
iconSize: widget.w * 0.045,
),
),
],
),
);
}
}
/// Rendert een afbeelding met zoomfactor op basis van BoxFit.contain.
/// imageSize = 0 → cover (Marp-standaard, vult frame, snijdt bij)
/// imageSize = 100 → volledige afbeelding zichtbaar (contain, evt. randen)
/// imageSize > 100 → inzoomen: groter dan contain, bijgesneden door ClipRect
/// imageSize < 100 → nog meer uitzoomen: afbeelding kleiner dan contain
Widget _zoomedImage(
BuildContext context,
String imagePath,
String? projectPath,
int imageSize, {
Color bgColor = Colors.black,
Alignment alignment = Alignment.center,
}) {
if (imageSize == 0) {
return _resolvedImage(
context,
imagePath,
projectPath,
); // BoxFit.cover standaard
}
final scale = imageSize / 100.0;
// Size the image box to `scale` × the available area and let BoxFit.contain
// fit the picture inside it. This produces the same visual result as a
// Transform.scale but without a transform layer, which `RepaintBoundary
// .toImage` (used for exports) captures far more reliably — a scaled
// transform layer would frequently render blank in the exported PNG.
return ClipRect(
child: ColoredBox(
color: bgColor,
child: LayoutBuilder(
builder: (context, constraints) {
final boxW = constraints.maxWidth * scale;
final boxH = constraints.maxHeight * scale;
return Align(
alignment: alignment,
child: SizedBox(
width: boxW,
height: boxH,
// BoxFit.contain: toont de volledige afbeelding zonder bijsnijden
child: _resolvedImage(
context,
imagePath,
projectPath,
fit: BoxFit.contain,
),
),
);
},
),
),
);
}
Widget _resolvedImage(
BuildContext context,
String imagePath,
String? projectPath, {
BoxFit fit = BoxFit.cover,
}) {
if (imagePath.isEmpty) return _imagePlaceholder(context);
final String resolved;
if (imagePath.startsWith('/') || imagePath.contains(':\\')) {
resolved = imagePath;
} else if (projectPath != null) {
resolved = '$projectPath/$imagePath';
} else {
resolved = imagePath;
}
return Image.file(
File(resolved),
fit: fit,
width: double.infinity,
height: double.infinity,
// Keep showing the previous frame while the next image decodes. Without
// this the widget paints nothing for a frame on a source change, which
// shows up as a black flash between slides — fatal when recording video.
gaplessPlayback: true,
errorBuilder: (context, error, stackTrace) => _imagePlaceholder(context),
);
}
Widget _captionOverlay(
BuildContext context,
String caption,
double w, {
double? right,
double? bottom,
}) {
final text = caption.trim();
if (text.isEmpty) return const SizedBox.shrink();
// Een copyright/bijschrift staat rechtsonder; als daar een TLP-markering
// staat, schuift het bijschrift erboven zodat het niet wordt overschreven.
final lift = _SlideLinkScope.hasBottomTlpOf(context)
? _tlpVerticalReserve(w)
: 0.0;
return Positioned(
right: right ?? w * _kTlpEdge,
bottom: (bottom ?? _tlpBottomInset(w)) + lift,
child: Container(
constraints: BoxConstraints(maxWidth: w * 0.5),
padding: EdgeInsets.symmetric(horizontal: w * 0.008, vertical: w * 0.005),
decoration: BoxDecoration(
color: Colors.black.withValues(alpha: 0.58),
borderRadius: BorderRadius.circular(3),
),
child: Text(
text,
textAlign: TextAlign.right,
style: TextStyle(
color: Colors.white,
fontSize: w * 0.011,
height: 1.25,
),
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
);
}
Widget _mediaPlaceholder(IconData icon, String label) {
return Container(
color: const Color(0xFFE2E8F0),
child: Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, color: const Color(0xFF94A3B8), size: 32),
const SizedBox(height: 6),
Text(
label,
style: const TextStyle(color: Color(0xFF94A3B8), fontSize: 12),
),
],
),
),
);
}
Widget _imagePlaceholder(BuildContext context) {
return ColoredBox(
color: const Color(0xFFE2E8F0),
child: LayoutBuilder(
builder: (context, constraints) {
final shortestSide = constraints.biggest.shortestSide;
if (shortestSide < 48) {
return Center(
child: Icon(
Icons.image_outlined,
color: const Color(0xFF94A3B8),
size: shortestSide * 0.65,
),
);
}
return Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const Icon(
Icons.image_outlined,
color: Color(0xFF94A3B8),
size: 24,
),
const SizedBox(height: 4),
Text(
context.l10n.d('Afbeelding'),
style: const TextStyle(color: Color(0xFF94A3B8), fontSize: 10),
),
],
),
);
},
),
);
}

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _LogoOverlay extends StatelessWidget {
final String logoPath;
final String? projectPath;
final String position;
final double size;
const _LogoOverlay({
required this.logoPath,
required this.projectPath,
required this.position,
required this.size,
});
@override
Widget build(BuildContext context) {
final horizontalInset = size * 0.28;
final topInset = size * 0.42;
final bottomInset = size * 0.12;
return Positioned(
top: position.startsWith('top') ? topInset : null,
bottom: position.startsWith('bottom') ? bottomInset : null,
left: position.endsWith('left') ? horizontalInset : null,
right: position.endsWith('right') ? horizontalInset : null,
child: SizedBox(
width: size,
height: size,
child: _resolvedImage(
context,
logoPath,
projectPath,
fit: BoxFit.contain,
),
),
);
}
}
// ── TLP-markering: maten gedeeld door de badge en de footer-uitsparing ──────
const double _kTlpFont = 0.018; // × slidebreedte
const double _kTlpEdge = 0.025; // afstand tot de slidehoek (× breedte)
const double _kTlpHPad = 0.011;
const double _kTlpVPad = 0.005;
double _tlpBottomInset(double w) => w * 0.022;
/// Geschatte breedte van de TLP-badge, zodat de footer ervoor kan uitwijken.
double _tlpBadgeWidth(double w, TlpLevel tlp) =>
tlp.label.length * w * _kTlpFont * 0.62 + 2 * (w * _kTlpHPad);
/// Verticale ruimte die een TLP-badge rechtsonder inneemt (voor bijschriften).
double _tlpVerticalReserve(double w) =>
w * _kTlpFont + 2 * (w * _kTlpVPad) + _tlpBottomInset(w);
/// Officiële TLP 2.0-markering (FIRST): de gekleurde label op een zwart vlak,
/// rechtsonder. Wijkt uit naar linksonder als het logo rechtsonder staat.
class _TlpOverlay extends StatelessWidget {
final TlpLevel tlp;
final double w;
final ThemeProfile profile;
final bool hasLogo;
const _TlpOverlay({
required this.tlp,
required this.w,
required this.profile,
required this.hasLogo,
});
@override
Widget build(BuildContext context) {
final toLeft = hasLogo && profile.logoPosition == 'bottom-right';
return Positioned(
bottom: _tlpBottomInset(w),
left: toLeft ? w * _kTlpEdge : null,
right: toLeft ? null : w * _kTlpEdge,
child: Container(
padding: EdgeInsets.symmetric(
horizontal: w * _kTlpHPad,
vertical: w * _kTlpVPad,
),
decoration: BoxDecoration(
color: Colors.black,
borderRadius: BorderRadius.circular(w * 0.005),
),
child: Text(
tlp.label,
style: TextStyle(
color: Color(tlp.foreground),
fontSize: w * _kTlpFont,
fontWeight: FontWeight.w700,
letterSpacing: 0.4,
fontFamily: 'monospace',
fontFamilyFallback: const ['Menlo', 'Consolas', 'Courier New'],
height: 1.0,
),
),
),
);
}
}
class _FooterOverlay extends StatelessWidget {
final Slide slide;
final double w;
final ThemeProfile profile;
final int? slideNumber;
final int? slideCount;
final TlpLevel tlp;
const _FooterOverlay({
required this.slide,
required this.w,
required this.profile,
this.slideNumber,
this.slideCount,
this.tlp = TlpLevel.none,
});
String _applyTokens(String s) {
final now = DateTime.now();
String two(int v) => v.toString().padLeft(2, '0');
final date = '${two(now.day)}-${two(now.month)}-${now.year}';
return s
.replaceAll('{page}', slideNumber?.toString() ?? '')
.replaceAll('{total}', slideCount?.toString() ?? '')
.replaceAll('{date}', date)
.replaceAll('{title}', slide.title);
}
@override
Widget build(BuildContext context) {
if (!slide.showFooter) return const SizedBox.shrink();
if (slide.type == SlideType.title || slide.type == SlideType.section) {
return const SizedBox.shrink();
}
final footerText = _applyTokens(profile.footerText).trim();
final showPages = profile.footerShowPageNumbers && slideNumber != null;
if (footerText.isEmpty && !showPages) return const SizedBox.shrink();
// Iets kleiner dan voorheen, zodat 'ie niet tegen het logo aan drukt.
final fontSize = w * 0.0145;
final style = TextStyle(
color: _hexColor(profile.textColor).withValues(alpha: 0.7),
fontSize: fontSize,
// Lichte schaduw zodat de footer ook over een afbeelding leesbaar blijft.
shadows: [
Shadow(
color: Colors.white.withValues(alpha: 0.5),
blurRadius: w * 0.003,
),
],
);
// Onderhoeken vrijhouden: de footer wijkt horizontaal uit voor het logo en
// de TLP-badge, zodat ze netjes uitlijnen i.p.v. over elkaar te vallen.
double mx(double a, double b) => a > b ? a : b;
final hasLogo = profile.logoPath?.isNotEmpty == true && slide.showLogo;
final logoBottom = hasLogo && profile.logoPosition.startsWith('bottom');
final logoOnLeft = profile.logoPosition.endsWith('left');
final logoSpan = w * (profile.logoSize / 1280) * 1.28 + w * 0.012;
final logoLeftEdge = w * (profile.logoSize / 1280) * 0.28;
final tlpOnRight = !(hasLogo && profile.logoPosition == 'bottom-right');
final tlpSpan = tlp == TlpLevel.none
? 0.0
: w * _kTlpEdge + _tlpBadgeWidth(w, tlp) + w * 0.012;
final footerLeftAligned = profile.footerPosition == 'left';
// Links uitgelijnd begint de footer waar het logo of de bullets beginnen,
// voor een consistente linkermarge. Anders de standaardmarge.
var left = footerLeftAligned
? (logoBottom && logoOnLeft
? logoLeftEdge
: _contentLeftInset(slide, w))
: w * 0.04;
var right = w * 0.04;
if (logoBottom) {
if (logoOnLeft) {
// Een links-uitgelijnde footer mag bewust met de logo-linkerkant
// uitlijnen; anders schuift 'ie rechts van het logo om overlap te
// voorkomen.
if (!footerLeftAligned) left = mx(left, logoSpan);
} else {
right = mx(right, logoSpan);
}
}
if (tlp != TlpLevel.none) {
if (tlpOnRight) {
right = mx(right, tlpSpan);
} else {
left = mx(left, tlpSpan);
}
}
final alignment = switch (profile.footerPosition) {
'left' => Alignment.centerLeft,
'center' => Alignment.center,
_ => Alignment.centerRight,
};
final textAlign = switch (profile.footerPosition) {
'left' => TextAlign.left,
'center' => TextAlign.center,
_ => TextAlign.right,
};
return Positioned(
left: left,
right: right,
bottom: w * 0.02,
child: Align(
alignment: alignment,
child: ConstrainedBox(
constraints: BoxConstraints(maxWidth: w - left - right),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
if (footerText.isNotEmpty)
Flexible(
child: Text(
footerText,
style: style,
textAlign: textAlign,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
),
if (footerText.isNotEmpty && showPages) SizedBox(width: w * 0.02),
if (showPages)
Text(
'$slideNumber / ${slideCount ?? slideNumber}',
style: style,
),
],
),
),
),
);
}
}

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _TablePreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _TablePreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final pad = w * 0.06;
final safe = slide.showLogo
? _splitTextLogoSafeInsets(w, profile)
: EdgeInsets.zero;
final titleSize = w * 0.038;
final rows = slide.tableRows.where((r) => r.isNotEmpty).toList();
final colCount = rows.fold<int>(0, (m, r) => r.length > m ? r.length : m);
// Scale cell text down as the table grows so it keeps fitting nicely.
final density = (rows.length + colCount).clamp(2, 24);
final cellSize = (w * 0.025 * (10 / (density + 6))).clamp(
w * 0.010,
w * 0.021,
);
final accent = _hexColor(profile.accentColor);
final textColor = _hexColor(profile.tableTextColor);
final headerTextColor = _hexColor(profile.tableHeaderTextColor);
final borderColor = accent.withValues(alpha: 0.35);
Widget cell(String value, {required bool header}) {
return Padding(
padding: EdgeInsets.symmetric(
horizontal: cellSize * 0.55,
vertical: cellSize * 0.36,
),
child: _md(
context,
value,
_applyFont(
font,
TextStyle(
fontSize: cellSize,
color: header ? headerTextColor : textColor,
fontWeight: header ? FontWeight.bold : FontWeight.normal,
),
),
linkColor: header ? headerTextColor : accent,
),
);
}
TableRow buildRow(List<String> row, {required bool header}) {
return TableRow(
decoration: BoxDecoration(color: header ? accent : null),
children: List.generate(colCount, (c) {
final value = c < row.length ? row[c] : '';
return TableCell(
verticalAlignment: TableCellVerticalAlignment.middle,
child: cell(value, header: header),
);
}),
);
}
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.topLeft,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.fromLTRB(
pad,
pad + safe.top,
pad,
pad + safe.bottom,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (slide.title.isNotEmpty) ...[
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
fontSize: titleSize,
fontWeight: FontWeight.bold,
color: _hexColor(profile.textColor),
),
),
linkColor: _hexColor(profile.accentColor),
),
SizedBox(height: pad * 0.35),
],
if (rows.isNotEmpty && colCount > 0)
Table(
border: TableBorder.all(
color: borderColor,
width: w * 0.0012,
),
defaultColumnWidth: const FlexColumnWidth(),
children: [
buildRow(rows.first, header: true),
for (var i = 1; i < rows.length; i++)
buildRow(rows[i], header: false),
],
),
],
),
),
),
),
);
}
}

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// Part of the slide_preview library — see ../slide_preview.dart.
// Split out for navigability; all imports live in the main library file.
part of '../slide_preview.dart';
class _TitlePreview extends StatelessWidget {
final Slide slide;
final double w;
final String? projectPath;
final String font;
final ThemeProfile profile;
const _TitlePreview({
required this.slide,
required this.w,
this.projectPath,
required this.font,
required this.profile,
});
Widget _content(BuildContext context) {
final pad = w * 0.08;
final link = _hexColor(profile.accentColor);
return FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.center,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.all(pad),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (slide.title.isNotEmpty)
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
color: _hexColor(profile.titleTextColor),
fontSize: w * 0.055,
fontWeight: FontWeight.bold,
height: 1.2,
),
),
linkColor: link,
),
if (slide.subtitle.isNotEmpty) ...[
SizedBox(height: w * 0.02),
_md(
context,
slide.subtitle,
_applyFont(
font,
TextStyle(
color: _hexColor(
profile.titleTextColor,
).withValues(alpha: 0.72),
fontSize: w * 0.03,
height: 1.3,
),
),
linkColor: link,
),
],
],
),
),
),
);
}
@override
Widget build(BuildContext context) {
final hasBg = slide.imagePath.isNotEmpty;
if (!hasBg) {
return Container(
color: _hexColor(profile.titleBackgroundColor),
child: SizedBox.expand(child: _content(context)),
);
}
return Stack(
fit: StackFit.expand,
children: [
_zoomedImage(
context,
slide.imagePath,
projectPath,
slide.imageSize,
bgColor: _hexColor(profile.titleBackgroundColor),
),
Container(
color: _hexColor(
profile.titleBackgroundColor,
).withValues(alpha: 0.62),
),
_content(context),
_captionOverlay(context, slide.imageCaption, w),
],
);
}
}
class _SectionPreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _SectionPreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final pad = w * 0.08;
return Container(
color: _hexColor(profile.sectionBackgroundColor),
child: SizedBox.expand(
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.center,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.all(pad),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
if (slide.title.isNotEmpty)
_md(
context,
slide.title,
_applyFont(
font,
TextStyle(
color: _hexColor(profile.titleTextColor),
fontSize: w * 0.05,
fontWeight: FontWeight.bold,
height: 1.2,
),
),
linkColor: _hexColor(profile.accentColor),
),
if (slide.subtitle.isNotEmpty) ...[
SizedBox(height: w * 0.015),
_md(
context,
slide.subtitle,
_applyFont(
font,
TextStyle(
color: _hexColor(
profile.titleTextColor,
).withValues(alpha: 0.72),
fontSize: w * 0.025,
),
),
linkColor: _hexColor(profile.accentColor),
),
],
],
),
),
),
),
),
);
}
}
class _QuotePreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final String? projectPath;
final ThemeProfile profile;
const _QuotePreview({
required this.slide,
required this.w,
required this.font,
this.projectPath,
required this.profile,
});
@override
Widget build(BuildContext context) {
final pad = w * 0.08;
final hasBg = slide.imagePath.isNotEmpty;
final textColor = hasBg ? Colors.white : _hexColor(profile.textColor);
final authorColor = hasBg ? Colors.white70 : Colors.grey[600]!;
final accentColor = hasBg ? Colors.white : _hexColor(profile.accentColor);
final content = FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.center,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.all(pad),
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Container(
width: w * 0.008,
height: w * 0.12,
color: accentColor,
margin: EdgeInsets.only(right: pad * 0.4),
),
Expanded(
child: _md(
context,
slide.quote.isEmpty ? '' : '"${slide.quote}"',
_applyFont(
font,
TextStyle(
fontSize: w * 0.033,
fontStyle: FontStyle.italic,
color: textColor,
height: 1.4,
),
),
linkColor: accentColor,
),
),
],
),
if (slide.quoteAuthor.isNotEmpty) ...[
SizedBox(height: pad * 0.6),
_md(
context,
'— ${slide.quoteAuthor}',
_applyFont(
font,
TextStyle(
fontSize: w * 0.026,
color: authorColor,
fontWeight: FontWeight.w500,
),
),
linkColor: accentColor,
),
],
],
),
),
),
);
if (!hasBg) {
return Container(
color: _hexColor(profile.slideBackgroundColor),
child: SizedBox.expand(child: content),
);
}
return Stack(
fit: StackFit.expand,
children: [
_zoomedImage(
context,
slide.imagePath,
projectPath,
slide.imageSize,
bgColor: _hexColor(profile.slideBackgroundColor),
),
Container(color: Colors.black.withValues(alpha: 0.52)),
content,
_captionOverlay(context, slide.imageCaption, w),
],
);
}
}
class _MarkdownPreview extends StatelessWidget {
final Slide slide;
final double w;
final String font;
final ThemeProfile profile;
const _MarkdownPreview({
required this.slide,
required this.w,
required this.font,
required this.profile,
});
@override
Widget build(BuildContext context) {
final pad = w * 0.07;
final safe = slide.showLogo ? _logoSafeInsets(w, profile) : EdgeInsets.zero;
return Container(
color: Colors.white,
child: SizedBox.expand(
child: FittedBox(
fit: BoxFit.scaleDown,
alignment: Alignment.topLeft,
child: SizedBox(
width: w,
child: Padding(
padding: EdgeInsets.fromLTRB(
pad,
pad + safe.top,
pad,
pad + safe.bottom,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: _buildBlocks(context),
),
),
),
),
),
);
}
/// Parse the free Markdown into block widgets: fenced ```code``` (syntax
/// highlighted), `$$…$$` display math, and ordinary heading/bullet/text lines.
List<Widget> _buildBlocks(BuildContext context) {
final link = _hexColor(profile.accentColor);
final lines = slide.customMarkdown.split('\n');
final widgets = <Widget>[];
var i = 0;
// Cap rendered blocks so a huge slide can't blow up layout (the preview is a
// thumbnail; FittedBox scales the rest down).
while (i < lines.length && widgets.length < 24) {
final line = lines[i];
// Fenced code block: ``` or ```language … ```
final fence = RegExp(r'^\s*```(.*)$').firstMatch(line);
if (fence != null) {
final language = fence.group(1)!.trim();
final code = <String>[];
i++;
while (i < lines.length && !RegExp(r'^\s*```\s*$').hasMatch(lines[i])) {
code.add(lines[i]);
i++;
}
if (i < lines.length) i++; // consume the closing fence
widgets.add(_codeBlock(code.join('\n'), language));
continue;
}
// Display math fenced by lines containing only `$$`.
if (line.trim() == r'$$') {
final tex = <String>[];
i++;
while (i < lines.length && lines[i].trim() != r'$$') {
tex.add(lines[i]);
i++;
}
if (i < lines.length) i++; // consume the closing $$
widgets.add(_mathBlock(tex.join('\n')));
continue;
}
// Single-line display math: $$ … $$
final oneLine = RegExp(r'^\s*\$\$(.+)\$\$\s*$').firstMatch(line);
if (oneLine != null) {
widgets.add(_mathBlock(oneLine.group(1)!.trim()));
i++;
continue;
}
widgets.add(_textLine(context, line, link));
i++;
}
return widgets;
}
Widget _textLine(BuildContext context, String line, Color link) {
if (line.startsWith('# ')) {
return _md(
context,
line.substring(2),
_applyFont(
font,
TextStyle(
fontSize: w * 0.04,
fontWeight: FontWeight.bold,
color: AppTheme.navy,
),
),
linkColor: link,
);
} else if (line.startsWith('## ')) {
return _md(
context,
line.substring(3),
_applyFont(
font,
TextStyle(fontSize: w * 0.03, fontWeight: FontWeight.w600),
),
linkColor: link,
);
} else if (line.startsWith('- ')) {
return _md(
context,
'• ${line.substring(2)}',
_applyFont(font, TextStyle(fontSize: w * 0.024)),
linkColor: link,
);
} else if (line.isEmpty) {
return SizedBox(height: w * 0.01);
}
return _md(
context,
line,
_applyFont(font, TextStyle(fontSize: w * 0.024)),
linkColor: link,
);
}
Widget _codeBlock(String code, String language) {
_ensureHighlightLanguages();
final mono = TextStyle(
fontFamily: 'monospace',
fontSize: w * 0.02,
height: 1.3,
color: const Color(0xFF24292E),
);
// HighlightView throws on an unregistered language, so only use it for ones
// we actually know; otherwise fall back to plain monospace.
final known = language.isNotEmpty && allLanguages.containsKey(language);
final Widget content = known
? HighlightView(
code,
language: language,
theme: githubTheme,
padding: EdgeInsets.zero,
textStyle: mono,
)
: Text(code, style: mono);
return Container(
width: double.infinity,
margin: EdgeInsets.symmetric(vertical: w * 0.008),
padding: EdgeInsets.all(w * 0.018),
decoration: BoxDecoration(
color: const Color(0xFFF6F8FA),
borderRadius: BorderRadius.circular(w * 0.008),
border: Border.all(color: const Color(0xFFE1E4E8)),
),
child: content,
);
}
Widget _mathBlock(String tex) {
return Padding(
padding: EdgeInsets.symmetric(vertical: w * 0.012),
child: Math.tex(
tex,
textStyle: _applyFont(font, TextStyle(fontSize: w * 0.032)),
onErrorFallback: (err) => Text(
'\$\$$tex\$\$',
style: TextStyle(
fontFamily: 'monospace',
fontSize: w * 0.022,
color: Colors.red,
),
),
),
);
}
}

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lib/widgets/slides/slide_preview.dart
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