QSize FilterWidget::sizeHint (void) const
{
HIRect optimalBounds;
EventRef event;
CreateEvent(0, kEventClassControl, kEventControlGetOptimalBounds,
GetCurrentEventTime(), kEventAttributeUserEvent, &event);
SendEventToEventTargetWithOptions(event,
HIObjectGetEventTarget(HIObjectRef(winId())),
kEventTargetDontPropagate);
GetEventParameter(event, kEventParamControlOptimalBounds, typeHIRect,
0, sizeof(HIRect), 0, &optimalBounds);
ReleaseEvent(event);
return QSize(optimalBounds.size.width + 200, optimalBounds.size.height - 4);
}
/*
Handle events of kEventClassControl that get sent to the Frame
*/
OSStatus HandleStarFrameControlEvents(
EventHandlerCallRef inCallRef,
EventRef inEvent,
StarFrameData* frameData)
{
OSStatus retVal = eventNotHandledErr;
switch(GetEventKind(inEvent)) {
case kEventControlInitialize :
retVal = HandleStarFrameInitialize(inCallRef, inEvent, frameData);
break;
case kEventControlOwningWindowChanged : {
// We only want the star-shaped opaque area of our frame view to
// draw. Everything else should be transparent. To accomplish that
// we change the features of the owning window so that only the
// content we draw shows up on screen
WindowRef newWindow = GetControlOwner(frameData->hiSelf);
HIWindowChangeFeatures(newWindow, 0, kWindowIsOpaque);
} break;
case kEventControlBoundsChanged : {
retVal = HandleStarFrameBoundsChanged(inCallRef, inEvent, frameData);
} break;
case kEventControlDraw : {
HIRect bounds;
CGContextRef cgContext;
HIViewGetBounds(frameData->hiSelf, &bounds);
float radius = fmin(CGRectGetWidth(bounds) / 2.0, CGRectGetHeight(bounds) / 2.0);
GetEventParameter(inEvent, kEventParamCGContextRef, typeCGContextRef, NULL, sizeof(cgContext), NULL, &cgContext );
if(NULL != cgContext) {
HIThemeMenuDrawInfo drawInfo;
CGPathRef starPath = CreatePathForStarFrame(frameData, radius);
drawInfo.version = 0;
drawInfo.menuType = frameData->menuType;
// HIThemeDrawMenuBackground is designed to draw the pin striped background
// of standard menus. Our menu is a star and so HIThemeDrawMenuBackground may not be
// appropriate in this case. Nevertheless, we'll draw the standard menu background for
// this menu and clip it to a star.
CGContextClearRect(cgContext, bounds);
CGContextSaveGState(cgContext);
CGContextTranslateCTM(cgContext, radius, radius);
CGContextAddPath(cgContext, starPath);
CGContextClip(cgContext);
CGContextTranslateCTM(cgContext, -radius, -radius);
HIThemeDrawMenuBackground(&bounds, &drawInfo, cgContext, kHIThemeOrientationNormal);
CGContextRestoreGState(cgContext);
// The pin striping looks a bit odd sort of floating out by itself. We'll also add
// a lovely gray line to help emphasize the boundary
CGContextTranslateCTM(cgContext, radius, radius);
CGContextAddPath(cgContext, starPath);
CGContextSetRGBStrokeColor(cgContext, 0.8, 0.8, 0.8, 1.0);
CGContextSetLineWidth(cgContext, 1.0);
CGContextStrokePath(cgContext);
CGPathRelease(starPath);
starPath = NULL;
}
retVal = noErr;
} break;
// Mac OS X v10.4 introduced a Window Manager bug.
// The workaround is to implement the kEventControlGetFrameMetrics handler.
// Even after the bug is fixed, the workaround will not be harmful.
case kEventControlGetFrameMetrics: {
HIViewRef contentView = NULL;
// If we can find our content view, ask it for our metrics
verify_noerr(HIViewFindByID(frameData->hiSelf, kHIViewWindowContentID, &contentView));
if(NULL != contentView) {
retVal = SendEventToEventTargetWithOptions( inEvent, GetControlEventTarget( contentView ), kEventTargetDontPropagate );
}
} break;
default:
break;
}
return retVal;
}