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; }