Merge pull request #89 from Pouzor/feat/export-quality

feat: PNG export quality selector (standard / high / ultra)
2026-04-20 13:50:42 +02:00
parent c7c5183356 7e08a85f73
commit a47b7649f0
5 changed files with 237 additions and 14 deletions
@@ -0,0 +1,71 @@
+import { useState } from 'react'
+import { Download, Loader2 } from 'lucide-react'
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter } from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { exportToPng, EXPORT_QUALITY_OPTIONS, type ExportQuality } from '@/utils/export'
+
+interface ExportModalProps {
+  open: boolean
+  onClose: () => void
+  getElement: () => HTMLElement | null
+}
+
+export function ExportModal({ open, onClose, getElement }: ExportModalProps) {
+  const [quality, setQuality] = useState<ExportQuality>('high')
+  const [exporting, setExporting] = useState(false)
+
+  const handleExport = async () => {
+    const el = getElement()
+    if (!el) return
+    setExporting(true)
+    try {
+      await exportToPng(el, quality)
+      onClose()
+    } finally {
+      setExporting(false)
+    }
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={(v) => !v && onClose()}>
+      <DialogContent className="bg-[#161b22] border-border max-w-sm">
+        <DialogHeader>
+          <DialogTitle className="text-foreground">Export as PNG</DialogTitle>
+        </DialogHeader>
+
+        <div className="space-y-2 py-2">
+          {EXPORT_QUALITY_OPTIONS.map((opt) => (
+            <button
+              key={opt.value}
+              type="button"
+              onClick={() => setQuality(opt.value)}
+              className={[
+                'w-full flex items-center justify-between px-3 py-2.5 rounded-md border text-sm transition-colors',
+                quality === opt.value
+                  ? 'border-[#00d4ff] bg-[#00d4ff10] text-foreground'
+                  : 'border-border bg-[#0d1117] text-muted-foreground hover:border-muted-foreground',
+              ].join(' ')}
+            >
+              <span className="font-medium">{opt.label}</span>
+              <span className="text-xs opacity-70">{opt.hint}</span>
+            </button>
+          ))}
+        </div>
+
+        <DialogFooter className="gap-2">
+          <Button variant="ghost" onClick={onClose} disabled={exporting}>Cancel</Button>
+          <Button
+            onClick={handleExport}
+            disabled={exporting}
+            style={{ background: '#00d4ff', color: '#0d1117' }}
+          >
+            {exporting
+              ? <><Loader2 size={14} className="animate-spin mr-1.5" />Exporting…</>
+              : <><Download size={14} className="mr-1.5" />Download</>
+            }
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
@@ -0,0 +1,74 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import { ExportModal } from '../ExportModal'
+
+const mockExportToPng = vi.fn()
+vi.mock('@/utils/export', () => ({
+  exportToPng: (...args: unknown[]) => mockExportToPng(...args),
+  EXPORT_QUALITY_OPTIONS: [
+    { value: 'standard', label: 'Standard', pixelRatio: 1, hint: '1× — small file' },
+    { value: 'high',     label: 'High',     pixelRatio: 2, hint: '2× — recommended' },
+    { value: 'ultra',    label: 'Ultra',    pixelRatio: 4, hint: '4× — print quality, large file' },
+  ],
+}))
+
+const el = document.createElement('div')
+const getElement = () => el
+const onClose = vi.fn()
+
+describe('ExportModal', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    mockExportToPng.mockResolvedValue(undefined)
+  })
+
+  it('renders all three quality options', () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    expect(screen.getByText('Standard')).toBeInTheDocument()
+    expect(screen.getByText('High')).toBeInTheDocument()
+    expect(screen.getByText('Ultra')).toBeInTheDocument()
+  })
+
+  it('selects High by default', () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    const highBtn = screen.getByText('High').closest('button')!
+    expect(highBtn.className).toContain('border-[#00d4ff]')
+  })
+
+  it('changes selection when another option is clicked', () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    fireEvent.click(screen.getByText('Ultra').closest('button')!)
+    expect(screen.getByText('Ultra').closest('button')!.className).toContain('border-[#00d4ff]')
+    expect(screen.getByText('High').closest('button')!.className).not.toContain('border-[#00d4ff]')
+  })
+
+  it('calls exportToPng with selected quality on Download click', async () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    fireEvent.click(screen.getByText('Standard').closest('button')!)
+    fireEvent.click(screen.getByRole('button', { name: /download/i }))
+    await waitFor(() => expect(mockExportToPng).toHaveBeenCalledWith(el, 'standard'))
+  })
+
+  it('closes after successful export', async () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    fireEvent.click(screen.getByRole('button', { name: /download/i }))
+    await waitFor(() => expect(onClose).toHaveBeenCalled())
+  })
+
+  it('calls onClose when Cancel is clicked', () => {
+    render(<ExportModal open onClose={onClose} getElement={getElement} />)
+    fireEvent.click(screen.getByRole('button', { name: /cancel/i }))
+    expect(onClose).toHaveBeenCalled()
+  })
+
+  it('does not call exportToPng when getElement returns null', async () => {
+    render(<ExportModal open onClose={onClose} getElement={() => null} />)
+    fireEvent.click(screen.getByRole('button', { name: /download/i }))
+    await waitFor(() => expect(mockExportToPng).not.toHaveBeenCalled())
+  })
+
+  it('does not render when closed', () => {
+    render(<ExportModal open={false} onClose={onClose} getElement={getElement} />)
+    expect(screen.queryByText('Export as PNG')).not.toBeInTheDocument()
+  })
+})