static void paintRepaintRectOverlay(CGContextRef context, WKImageRef image, WKArrayRef repaintRects)
{
WKSize imageSize = WKImageGetSize(image);
CGContextSaveGState(context);
// Using a transparency layer is easier than futzing with clipping.
CGContextBeginTransparencyLayer(context, 0);
// Flip the context.
CGContextScaleCTM(context, 1, -1);
CGContextTranslateCTM(context, 0, -imageSize.height);
CGContextSetRGBFillColor(context, 0, 0, 0, static_cast<CGFloat>(0.66));
CGContextFillRect(context, CGRectMake(0, 0, imageSize.width, imageSize.height));
// Clear the repaint rects.
size_t count = WKArrayGetSize(repaintRects);
for (size_t i = 0; i < count; ++i) {
WKRect rect = WKRectGetValue(static_cast<WKRectRef>(WKArrayGetItemAtIndex(repaintRects, i)));
CGRect cgRect = CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
CGContextClearRect(context, cgRect);
}
CGContextEndTransparencyLayer(context);
CGContextRestoreGState(context);
}
void GraphicsContext::beginTransparencyLayer(float opacity)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextSetAlpha(context, opacity);
CGContextBeginTransparencyLayer(context, 0);
m_data->beginTransparencyLayer();
}
void GraphicsContext::beginTransparencyLayer(float opacity)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextSetAlpha(context, opacity);
CGContextBeginTransparencyLayer(context, 0);
m_data->beginTransparencyLayer();
m_data->m_userToDeviceTransformKnownToBeIdentity = false;
}
void UIFrameBufferQuartz2D::paintEvent(QPaintEvent *aEvent)
{
/* If the machine is NOT in 'running' state,
* the link between framebuffer and video memory
* is broken, we should go fallback now... */
if (m_fUsesGuestVRAM &&
!m_pMachineView->uisession()->isRunning() &&
!m_pMachineView->uisession()->isPaused() &&
/* Online snapshotting: */
m_pMachineView->uisession()->machineState() != KMachineState_Saving)
{
/* Simulate fallback through fake resize-event: */
UIResizeEvent event(FramebufferPixelFormat_Opaque, NULL, 0, 0, 640, 480);
resizeEvent(&event);
}
/* For debugging /Developer/Applications/Performance Tools/Quartz
* Debug.app is a nice tool to see which parts of the screen are
* updated.*/
Assert(m_image);
QWidget* viewport = m_pMachineView->viewport();
Assert(VALID_PTR(viewport));
/* Get the dimensions of the viewport */
CGRect viewRect = ::darwinToCGRect(viewport->geometry());
/* Get the context of this window from Qt */
CGContextRef ctx = ::darwinToCGContextRef(viewport);
Assert(VALID_PTR(ctx));
/* Flip the context */
CGContextTranslateCTM(ctx, 0, viewRect.size.height);
CGContextScaleCTM(ctx, 1.0, -1.0);
/* We handle the seamless mode as a special case. */
if (m_pMachineLogic->visualStateType() == UIVisualStateType_Seamless)
{
/* Clear the background (make the rect fully transparent): */
CGContextClearRect(ctx, viewRect);
#ifdef OVERLAY_CLIPRECTS
/* Enable overlay above the seamless mask: */
CGContextSetRGBFillColor(ctx, 0.0, 0.0, 5.0, 0.7);
CGContextFillRect(ctx, viewRect);
#endif /* OVERLAY_CLIPRECTS */
#ifdef COMP_WITH_SHADOW
/* Enable shadows: */
CGContextSetShadow(ctx, CGSizeMake (10, -10), 10);
CGContextBeginTransparencyLayer(ctx, NULL);
#endif /* COMP_WITH_SHADOW */
/* Determine current visible region: */
RegionRects *pRgnRcts = ASMAtomicXchgPtrT(&mRegion, NULL, RegionRects*);
if (pRgnRcts)
{
/* If visible region is determined: */
if (pRgnRcts->used > 0)
{
/* Add the clipping rects all at once (they are defined in SetVisibleRegion): */
CGContextBeginPath(ctx);
CGContextAddRects(ctx, pRgnRcts->rcts, pRgnRcts->used);
/* Now convert the path to a clipping path: */
CGContextClip(ctx);
}
/* Put back the visible region, free if we cannot (2+ SetVisibleRegion calls): */
if ( !ASMAtomicCmpXchgPtr(&mRegion, pRgnRcts, NULL)
&& !ASMAtomicCmpXchgPtr(&mRegionUnused, pRgnRcts, NULL))
{
RTMemFree(pRgnRcts);
pRgnRcts = NULL;
}
}
/* If visible region is still determined: */
if (pRgnRcts && pRgnRcts->used > 0)
{
/* Create a subimage of the current view.
* Currently this subimage is the whole screen. */
CGImageRef subImage;
if (!m_pMachineView->pauseShot().isNull())
{
CGImageRef pauseImg = ::darwinToCGImageRef(&m_pMachineView->pauseShot());
subImage = CGImageCreateWithImageInRect(pauseImg, CGRectMake(m_pMachineView->contentsX(), m_pMachineView->contentsY(), m_pMachineView->visibleWidth(), m_pMachineView->visibleHeight()));
CGImageRelease(pauseImg);
}
else
{
#ifdef RT_ARCH_AMD64
/* Not sure who to blame, but it seems on 64bit there goes
* something terrible wrong (on a second monitor) when directly
* using CGImageCreateWithImageInRect without making a copy. We saw
* something like this already with the scale mode. */
CGImageRef tmpImage = CGImageCreateWithImageInRect(m_image, CGRectMake(m_pMachineView->contentsX(), m_pMachineView->contentsY(), m_pMachineView->visibleWidth(), m_pMachineView->visibleHeight()));
subImage = CGImageCreateCopy(tmpImage);
CGImageRelease(tmpImage);
#else /* RT_ARCH_AMD64 */
subImage = CGImageCreateWithImageInRect(m_image, CGRectMake(m_pMachineView->contentsX(), m_pMachineView->contentsY(), m_pMachineView->visibleWidth(), m_pMachineView->visibleHeight()));
#endif /* !RT_ARCH_AMD64 */
}
Assert(VALID_PTR(subImage));
/* In any case clip the drawing to the view window: */
CGContextClipToRect(ctx, viewRect);
/* At this point draw the real vm image: */
CGContextDrawImage(ctx, ::darwinFlipCGRect(viewRect, viewRect.size.height), subImage);
/* Release the subimage: */
CGImageRelease(subImage);
}
#ifdef COMP_WITH_SHADOW
CGContextEndTransparencyLayer(ctx);
#endif /* COMP_WITH_SHADOW */
#ifdef OVERLAY_CLIPRECTS
if (pRgnRcts && pRgnRcts->used > 0)
{
CGContextBeginPath(ctx);
CGContextAddRects(ctx, pRgnRcts->rcts, pRgnRcts->used);
CGContextSetRGBStrokeColor(ctx, 1.0, 0.0, 0.0, 0.7);
CGContextDrawPath(ctx, kCGPathStroke);
}
CGContextSetRGBStrokeColor(ctx, 0.0, 1.0, 0.0, 0.7);
CGContextStrokeRect(ctx, viewRect);
#endif /* OVERLAY_CLIPRECTS */
}
void CGContextBeginTransparencyLayer_wrap(CGContextRef c) {
CGContextBeginTransparencyLayer(c, NULL);
}
