private void drawOutline(GC gc, CanvasViewInfo info) {
Rectangle r = info.getAbsRect();
int x = mHScale.translate(r.x);
int y = mVScale.translate(r.y);
int w = mHScale.scale(r.width);
int h = mVScale.scale(r.height);
// Add +1 to the width and +1 to the height such that when you have a
// series of boxes (in say a LinearLayout), instead of the bottom of one
// box and the top of the next box being -adjacent-, they -overlap-.
// This makes the outline nicer visually since you don't get
// "double thickness" lines for all adjacent boxes.
gc.drawRectangle(x, y, w + 1, h + 1);
for (CanvasViewInfo vi : info.getChildren()) {
drawOutline(gc, vi);
}
}
@Override
public void paint(GC gc) {
if (mHoverRect != null) {
// Translate the hover rectangle (in canvas coordinates) to control
// coordinates
int x = mHScale.translate(mHoverRect.x);
int y = mVScale.translate(mHoverRect.y);
int w = mHScale.scale(mHoverRect.width);
int h = mVScale.scale(mHoverRect.height);
boolean hoverIsSelected = false;
List<SelectionItem> selections = mCanvas.getSelectionManager().getSelections();
for (SelectionItem item : selections) {
if (mHoverRect.equals(item.getViewInfo().getSelectionRect())) {
hoverIsSelected = true;
break;
}
}
Color stroke = hoverIsSelected ? mHoverSelectStrokeColor : mHoverStrokeColor;
Color fill = hoverIsSelected ? mHoverSelectFillColor : mHoverFillColor;
if (stroke != null) {
int oldAlpha = gc.getAlpha();
gc.setForeground(stroke);
gc.setLineStyle(hoverIsSelected ? HOVER_SELECTION.getLineStyle() : HOVER.getLineStyle());
gc.setAlpha(hoverIsSelected ? HOVER_SELECTION.getStrokeAlpha() : HOVER.getStrokeAlpha());
gc.drawRectangle(x, y, w, h);
gc.setAlpha(oldAlpha);
}
if (fill != null) {
int oldAlpha = gc.getAlpha();
gc.setAlpha(hoverIsSelected ? HOVER_SELECTION.getFillAlpha() : HOVER.getFillAlpha());
gc.setBackground(fill);
gc.fillRectangle(x, y, w, h);
gc.setAlpha(oldAlpha);
}
}
}
