TransformPanel provides the right-panel parameter editing section:
- Position: X/Y QDoubleSpinBox (range ±99999 px, 0.1 step)
- Size: Width/Height QDoubleSpinBox (min 10 px) + 锁定宽高比例 checkbox
- When locked and width changes, height is auto-updated to maintain ratio
- When locked and height changes, width is auto-updated to maintain ratio
- Locking captures the current ratio at that moment
- Rotation: angle QDoubleSpinBox + 左旋 90° / 右旋 90° buttons
Signal-loop prevention:
- set_transform() sets self._updating = True and blockSignals on all inputs
before updating values, preventing valueChanged from re-firing _emit()
- _on_width_changed/_on_height_changed also blockSignals on the companion
spinbox when adjusting for aspect ratio to avoid double emission
Public API:
- set_transform(TransformState): programmatic update, no signal emitted
- get_transform() -> TransformState: read current inputs
- transform_changed signal: emitted whenever user edits any input
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace placeholder ImageCanvas with full QGraphicsView/QGraphicsScene editor:
Layout: ImageCanvas(QWidget) = top bar + _CanvasView(QGraphicsView) + hint bar
Top bar: garment/print filenames, mode buttons (移动/缩放/旋转, context-aware),
zoom controls (−/% label/+, scroll wheel).
_CanvasView:
- drawBackground: checkerboard in garment area, gray outside
- wheelEvent: zoom in/out anchored at cursor
- mousePressEvent/mouseMoveEvent/mouseReleaseEvent: delegate to ImageCanvas
Scene (1:1 with garment pixel coords):
- garment QGraphicsPixmapItem at (0,0), not interactive
- print QGraphicsPixmapItem positioned/rotated from TransformState
- cosmetic selection rect (blue, 1.5px)
- 4 corner handles (white circle, blue border) for scaling
- rotation arm (dashed) + handle (blue circle) above top-center
Interaction:
- Hit test: rotation handle > corner handles > print body (priority order)
- Move: delta in scene coords added to TransformState.x/y
- Scale: _scene_to_local_xy() maps mouse to item local coords, computes
new size keeping opposite corner fixed (_do_scale); supports aspect
ratio lock via Shift or keep_aspect_ratio flag; correct with rotation
- Rotate: atan2(mouse - center) + angle offset at press
Coordinate helpers (static):
- _local_to_scene_xy(lx, ly, state): item-local → scene
- _scene_to_local_xy(sx, sy, state): scene → item-local (inverse rotation)
Both use TransformState snapshot, not live item state, to avoid stale-pixmap issues.
transform_changed signal fires on mouse release with final TransformState.
Preview zoom changes only QGraphicsView transform; TransformState is unaffected.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Expand MainWindow from placeholder to full structural layout:
- Header bar: app name, version label, settings button
- Flow tab bar (QTabBar): tabs 2/3 disabled, click redirects to status bar message
- Work area (QSplitter): ImageListPanel (left 374px) | ImageCanvas (center, stretch) | right scroll with TemplatePanel/TransformPanel/ExportPanel (318px)
- Queue panel (188px, collapsible ▲/▼ toggle)
- QStatusBar with Windows-style styling
Applies color/font spec from docs/07-ui-design.md §10.
No business logic in main_window.py; panel stubs remain for tasks 8–13.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
adminandClaude Sonnet 4.6