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fix(a11y): increase all PdfControls buttons to 44×44px touch targets
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Add min-h-[44px] min-w-[44px] to all five PDF viewer buttons (prev,
next, zoom in, zoom out, annotation toggle) and widen icon-only
padding from p-1 to p-2. Adds aria-pressed to the annotation toggle
for correct toggle semantics (WCAG 2.2 §2.5.8 + ARIA 1.2).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Marcel
2026-05-09 15:49:18 +02:00
parent cd1c0b210e
commit d4abe994a3
2 changed files with 85 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
frontend/src/lib/document/viewer/PdfControls.svelte
View File

@@ -35,7 +35,7 @@ let {
onclick={onPrev}
disabled={currentPage <= 1}
aria-label="Zurück"
class="rounded p-1 text-ink-3 transition hover:bg-surface/10 disabled:opacity-40"
class="min-h-[44px] min-w-[44px] rounded p-2 text-ink-3 transition hover:bg-surface/10 disabled:opacity-40"
>
<svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path stroke-linecap="round" stroke-linejoin="round" d="M15 19l-7-7 7-7" />
@@ -52,7 +52,7 @@ let {
onclick={onNext}
disabled={!isLoaded || currentPage >= totalPages}
aria-label="Weiter"
class="rounded p-1 text-ink-3 transition hover:bg-surface/10 disabled:opacity-40"
class="min-h-[44px] min-w-[44px] rounded p-2 text-ink-3 transition hover:bg-surface/10 disabled:opacity-40"
>
<svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7" />
@@ -65,7 +65,7 @@ let {
<button
onclick={onZoomOut}
aria-label="Verkleinern"
class="rounded p-1 text-ink-3 transition hover:bg-surface/10"
class="min-h-[44px] min-w-[44px] rounded p-2 text-ink-3 transition hover:bg-surface/10"
>
<svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<circle cx="11" cy="11" r="8" />
@@ -75,7 +75,7 @@ let {
<button
onclick={onZoomIn}
aria-label="Vergrößern"
class="rounded p-1 text-ink-3 transition hover:bg-surface/10"
class="min-h-[44px] min-w-[44px] rounded p-2 text-ink-3 transition hover:bg-surface/10"
>
<svg class="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
<circle cx="11" cy="11" r="8" />
@@ -89,7 +89,8 @@ let {
<button
onclick={onToggleAnnotations}
aria-label={showAnnotations ? m.pdf_annotations_hide() : m.pdf_annotations_show()}
class="flex items-center gap-1.5 rounded px-2 py-1 font-sans text-xs transition {showAnnotations
aria-pressed={showAnnotations}
class="flex min-h-[44px] min-w-[44px] items-center gap-1.5 rounded px-3 py-2 font-sans text-xs transition {showAnnotations
? 'text-ink-2 hover:bg-surface/10'
: 'bg-surface/10 text-primary'}"
>

79
frontend/src/lib/document/viewer/PdfControls.svelte.spec.ts
View File

@@ -65,3 +65,82 @@ describe('PdfControls — annotation toggle contrast (WCAG 2.1 AA)', () => {
expect(annotationBtn!.className).not.toContain('text-accent');
});
});
describe('PdfControls — touch targets (WCAG 2.2 §2.5.8)', () => {
it('annotation toggle button has min-h-[44px] touch target', async () => {
const { container } = render(PdfControls, {
...defaultProps,
annotationCount: 2,
showAnnotations: false
});
const allButtons = container.querySelectorAll('button');
const annotationBtn = Array.from(allButtons).find((b) =>
b.getAttribute('aria-label')?.toLowerCase().includes('annotierungen')
);
expect(annotationBtn).not.toBeNull();
expect(annotationBtn!.className).toContain('min-h-[44px]');
});
it('annotation toggle button has min-w-[44px] touch target', async () => {
const { container } = render(PdfControls, {
...defaultProps,
annotationCount: 2,
showAnnotations: false
});
const allButtons = container.querySelectorAll('button');
const annotationBtn = Array.from(allButtons).find((b) =>
b.getAttribute('aria-label')?.toLowerCase().includes('annotierungen')
);
expect(annotationBtn).not.toBeNull();
expect(annotationBtn!.className).toContain('min-w-[44px]');
});
it('annotation toggle reflects pressed state via aria-pressed', async () => {
const { container: c1 } = render(PdfControls, {
...defaultProps,
annotationCount: 2,
showAnnotations: false
});
const btn1 = Array.from(c1.querySelectorAll('button')).find((b) =>
b.getAttribute('aria-label')?.toLowerCase().includes('annotierungen')
);
expect(btn1!.getAttribute('aria-pressed')).toBe('false');
cleanup();
const { container: c2 } = render(PdfControls, {
...defaultProps,
annotationCount: 2,
showAnnotations: true
});
const btn2 = Array.from(c2.querySelectorAll('button')).find((b) =>
b.getAttribute('aria-label')?.toLowerCase().includes('annotierungen')
);
expect(btn2!.getAttribute('aria-pressed')).toBe('true');
});
it('icon-only nav/zoom buttons each have min-h-[44px] touch target', async () => {
const { container } = render(PdfControls, { ...defaultProps });
const allButtons = container.querySelectorAll('button');
const iconOnlyButtons = Array.from(allButtons).filter((b) => {
const label = b.getAttribute('aria-label') ?? '';
return ['zurück', 'weiter', 'verkleinern', 'vergrößern'].includes(label.toLowerCase());
});
expect(iconOnlyButtons).toHaveLength(4);
for (const btn of iconOnlyButtons) {
expect(btn.className).toContain('min-h-[44px]');
}
});
it('icon-only nav/zoom buttons each have min-w-[44px] touch target', async () => {
const { container } = render(PdfControls, { ...defaultProps });
const allButtons = container.querySelectorAll('button');
const iconOnlyButtons = Array.from(allButtons).filter((b) => {
const label = b.getAttribute('aria-label') ?? '';
return ['zurück', 'weiter', 'verkleinern', 'vergrößern'].includes(label.toLowerCase());
});
expect(iconOnlyButtons).toHaveLength(4);
for (const btn of iconOnlyButtons) {
expect(btn.className).toContain('min-w-[44px]');
}
});
});