void doStrokeWithCTM(CGContextRef context)
{
CGContextTranslateCTM(context, 150., 180.);
CGContextSetLineWidth(context, 10);
// Draw ellipse 1 with a uniform stroke.
CGContextSaveGState(context);
// Scale the CTM so the circular arc will be elliptical.
CGContextScaleCTM(context, 2, 1);
CGContextBeginPath(context);
// Create an arc that is a circle.
CGContextAddArc(context, 0., 0., 45., 0., 2*M_PI, 0);
// Restore the context parameters prior to stroking the path.
// CGContextRestoreGState does not affect the path in the context.
CGContextRestoreGState(context);
CGContextStrokePath(context);
// *** was 0, -120
CGContextTranslateCTM(context, 220., 0.);
// Draw ellipse 2 with non-uniform stroke.
CGContextSaveGState(context);
// Scale the CTM so the circular arc will be elliptical.
CGContextScaleCTM(context, 2, 1);
CGContextBeginPath(context);
// Create an arc that is a circle.
CGContextAddArc(context, 0., 0., 45., 0., 2*M_PI, 0);
// Stroke the path with the scaled coordinate system in effect.
CGContextStrokePath(context);
CGContextRestoreGState(context);
}
FloatRect strokeBoundingBox(const Path& path, RenderStyle* style, const RenderObject* object)
{
// the bbox might grow if the path is stroked.
// and CGPathGetBoundingBox doesn't support that, so we'll have
// to make an alternative call...
// FIXME: since this is mainly used to decide what to repaint,
// perhaps it would be sufficient to just outset the fill bbox by
// the stroke width - that should be way cheaper and simpler than
// what we do here.
CGPathRef cgPath = path.platformPath();
CGContextRef context = scratchContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, cgPath);
GraphicsContext gc(context);
applyStrokeStyleToContext(&gc, style, object);
CGContextReplacePathWithStrokedPath(context);
if (CGContextIsPathEmpty(context)) {
// CGContextReplacePathWithStrokedPath seems to fail to create a path sometimes, this is not well understood.
// returning here prevents CG from logging to the console from CGContextGetPathBoundingBox
CGContextRestoreGState(context);
return FloatRect();
}
CGRect box = CGContextGetPathBoundingBox(context);
CGContextRestoreGState(context);
return FloatRect(box);
}
void WKCACFLayer::display(PlatformGraphicsContext* context)
{
if (!m_owner)
return;
CGContextSaveGState(context);
CGRect layerBounds = bounds();
if (m_owner->contentsOrientation() == WebCore::GraphicsLayer::CompositingCoordinatesTopDown) {
CGContextScaleCTM(context, 1, -1);
CGContextTranslateCTM(context, 0, -layerBounds.size.height);
}
if (m_owner->client()) {
GraphicsContext graphicsContext(context);
// It's important to get the clip from the context, because it may be significantly
// smaller than the layer bounds (e.g. tiled layers)
CGRect clipBounds = CGContextGetClipBoundingBox(context);
IntRect clip(enclosingIntRect(clipBounds));
m_owner->paintGraphicsLayerContents(graphicsContext, clip);
}
#ifndef NDEBUG
else {
ASSERT_NOT_REACHED();
// FIXME: ideally we'd avoid calling -setNeedsDisplay on a layer that is a plain color,
// so CA never makes backing store for it (which is what -setNeedsDisplay will do above).
CGContextSetRGBFillColor(context, 0.0f, 1.0f, 0.0f, 1.0f);
CGContextFillRect(context, layerBounds);
}
#endif
if (m_owner->showRepaintCounter()) {
char text[16]; // that's a lot of repaints
_snprintf(text, sizeof(text), "%d", m_owner->incrementRepaintCount());
CGContextSaveGState(context);
CGContextSetRGBFillColor(context, 1.0f, 0.0f, 0.0f, 0.8f);
CGRect aBounds = layerBounds;
aBounds.size.width = 10 + 12 * strlen(text);
aBounds.size.height = 25;
CGContextFillRect(context, aBounds);
CGContextSetRGBFillColor(context, 0.0f, 0.0f, 0.0f, 1.0f);
CGContextSetTextMatrix(context, CGAffineTransformMakeScale(1.0f, -1.0f));
CGContextSelectFont(context, "Helvetica", 25, kCGEncodingMacRoman);
CGContextShowTextAtPoint(context, aBounds.origin.x + 3.0f, aBounds.origin.y + 20.0f, text, strlen(text));
CGContextRestoreGState(context);
}
CGContextRestoreGState(context);
}
CFX_QuartzDeviceDriver::~CFX_QuartzDeviceDriver()
{
CGContextRestoreGState(_context);
m_saveCount--;
for (int i = 0; i < m_saveCount; ++i) {
CGContextRestoreGState(_context);
}
if (_context) {
CGContextRelease(_context);
}
}
wxBitmap wxScreenDCImpl::DoGetAsBitmap(const wxRect *subrect) const
{
wxRect rect = subrect ? *subrect : wxRect(0, 0, m_width, m_height);
wxBitmap bmp(rect.GetSize(), 32);
#if !wxOSX_USE_IPHONE
CGRect srcRect = CGRectMake(rect.x, rect.y, rect.width, rect.height);
CGContextRef context = (CGContextRef)bmp.GetHBITMAP();
CGContextSaveGState(context);
CGContextTranslateCTM( context, 0, m_height );
CGContextScaleCTM( context, 1, -1 );
if ( subrect )
srcRect = CGRectOffset( srcRect, -subrect->x, -subrect->y ) ;
CGImageRef image = grabViaOpenGL(kCGNullDirectDisplay, srcRect);
wxASSERT_MSG(image, wxT("wxScreenDC::GetAsBitmap - unable to get screenshot."));
CGContextDrawImage(context, srcRect, image);
CGImageRelease(image);
CGContextRestoreGState(context);
#else
// TODO implement using UIGetScreenImage, CGImageCreateWithImageInRect, CGContextDrawImage
#endif
return bmp;
}
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 CGDrawContext::fillLinearGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& startPoint, const CPoint& endPoint, bool evenOdd, CGraphicsTransform* t)
{
QuartzGraphicsPath* path = dynamic_cast<QuartzGraphicsPath*> (_path);
if (path == 0)
return;
const QuartzGradient* cgGradient = dynamic_cast<const QuartzGradient*> (&gradient);
if (cgGradient == 0)
return;
CGContextRef cgContext = beginCGContext (true, currentState.drawMode.integralMode ());
if (cgContext)
{
if (t)
{
CGContextSaveGState (cgContext);
CGAffineTransform transform = QuartzGraphicsPath::createCGAfflineTransform (*t);
CGContextConcatCTM (cgContext, transform);
CGContextAddPath (cgContext, path->getCGPathRef ());
CGContextRestoreGState (cgContext);
}
else
CGContextAddPath (cgContext, path->getCGPathRef ());
if (evenOdd)
CGContextEOClip (cgContext);
else
CGContextClip (cgContext);
CGContextDrawLinearGradient (cgContext, *cgGradient, CGPointMake (startPoint.x, startPoint.y), CGPointMake (endPoint.x, endPoint.y), kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
releaseCGContext (cgContext);
}
}
void drawRoundedRect(CGContextRef context, int x, int y){
struct CGRect cgRect;
struct CGPoint cgPoint;
cgRect.size.width = 640;
cgRect.size.height = y+30;
cgPoint.x = 0;
cgPoint.y = 5;
cgRect.origin = cgPoint;
//printf("Drawing %f, %f, %f, %f", cgPoint.x, cgPoint.y, cgRect.size.width, cgRect.size.height);
CGContextBeginPath(context);
float ovalWidth = 10;
float ovalHeight = 10;
float fw, fh;
// If the width or height of the corner oval is zero, then it reduces to a right angle,
// so instead of a rounded rectangle we have an ordinary one.
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, cgRect);
return;
}
// Save the context's state so that the translate and scale can be undone with a call
// to CGContextRestoreGState.
CGContextSaveGState(context);
// Translate the origin of the contex to the lower left corner of the rectangle.
CGContextTranslateCTM(context, CGRectGetMinX(cgRect), CGRectGetMinY(cgRect));
//Normalize the scale of the context so that the width and height of the arcs are 1.0
CGContextScaleCTM(context, ovalWidth, ovalHeight);
// Calculate the width and height of the rectangle in the new coordinate system.
fw = CGRectGetWidth(cgRect) / ovalWidth;
fh = CGRectGetHeight(cgRect) / ovalHeight;
// CGContextAddArcToPoint adds an arc of a circle to the context's path (creating the rounded
// corners). It also adds a line from the path's last point to the begining of the arc, making
// the sides of the rectangle.
CGContextMoveToPoint(context, fw, fh/2); // Start at lower right corner
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 1); // Top right corner
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 1); // Top left corner
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 1); // Lower left corner
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 1); // Back to lower right
// Close the path
CGContextClosePath(context);
CGContextSetRGBFillColor (context, 1, 1, 1, 0.7);
CGContextFillPath(context);
CGContextRestoreGState(context);
}
void GraphicsContext::drawFocusRing(const Color& color)
{
if (paintingDisabled())
return;
float radius = (focusRingWidth() - 1) / 2.0f;
int offset = radius + focusRingOffset();
CGColorRef colorRef = color.isValid() ? cgColor(color) : 0;
CGMutablePathRef focusRingPath = CGPathCreateMutable();
const Vector<IntRect>& rects = focusRingRects();
unsigned rectCount = rects.size();
for (unsigned i = 0; i < rectCount; i++)
CGPathAddRect(focusRingPath, 0, CGRectInset(rects[i], -offset, -offset));
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextBeginPath(context);
CGContextAddPath(context, focusRingPath);
wkDrawFocusRing(context, colorRef, radius);
CGColorRelease(colorRef);
CGPathRelease(focusRingPath);
CGContextRestoreGState(context);
}
void pathForArc(CGContextRef context, CGRect r, int startAngle, int arcAngle)
{
float start, end;
CGAffineTransform matrix;
// Save the context's state because we are going to scale it
CGContextSaveGState(context);
// Create a transform to scale the context so that a radius of 1 maps to the bounds
// of the rectangle, and transform the origin of the context to the center of
// the bounding rectangle.
matrix = CGAffineTransformMake(r.size.width/2, 0,
0, r.size.height/2,
r.origin.x + r.size.width/2,
r.origin.y + r.size.height/2);
// Apply the transform to the context
CGContextConcatCTM(context, matrix);
// Calculate the start and ending angles
if (arcAngle > 0) {
start = (90 - startAngle - arcAngle) * M_PI / 180;
end = (90 - startAngle) * M_PI / 180;
} else {
start = (90 - startAngle) * M_PI / 180;
end = (90 - startAngle - arcAngle) * M_PI / 180;
}
// Add the Arc to the path
CGContextAddArc(context, 0, 0, 1, start, end, false);
// Restore the context's state. This removes the translation and scaling
// but leaves the path, since the path is not part of the graphics state.
CGContextRestoreGState(context);
}
wxBitmap wxScreenDCImpl::DoGetAsBitmap(const wxRect *subrect) const
{
CGRect srcRect = CGRectMake(0, 0, m_width, m_height);
if (subrect)
{
srcRect.origin.x = subrect->GetX();
srcRect.origin.y = subrect->GetY();
srcRect.size.width = subrect->GetWidth();
srcRect.size.height = subrect->GetHeight();
}
wxBitmap bmp = wxBitmap(srcRect.size.width, srcRect.size.height, 32);
#if wxOSX_USE_IPHONE
#else
CGContextRef context = (CGContextRef)bmp.GetHBITMAP();
CGContextSaveGState(context);
CGContextTranslateCTM( context, 0, m_height );
CGContextScaleCTM( context, 1, -1 );
if ( subrect )
srcRect = CGRectOffset( srcRect, -subrect->x, -subrect->y ) ;
CGImageRef image = grabViaOpenGL(kCGNullDirectDisplay, srcRect);
wxASSERT_MSG(image, wxT("wxScreenDC::GetAsBitmap - unable to get screenshot."));
CGContextDrawImage(context, srcRect, image);
CGContextRestoreGState(context);
#endif
return bmp;
}
Rect
PathCG::GetStrokedBounds(const StrokeOptions &aStrokeOptions,
const Matrix &aTransform) const
{
// 10.7 has CGPathCreateCopyByStrokingPath which we could use
// instead of this scratch context business
CGContextRef cg = ScratchContext();
CGContextSaveGState(cg);
CGContextBeginPath(cg);
CGContextAddPath(cg, mPath);
SetStrokeOptions(cg, aStrokeOptions);
CGContextReplacePathWithStrokedPath(cg);
Rect bounds = CGRectToRect(CGContextGetPathBoundingBox(cg));
CGContextRestoreGState(cg);
if (!bounds.IsFinite()) {
return Rect();
}
return aTransform.TransformBounds(bounds);
}
static void AddRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth, float ovalHeight)
{
float fw, fh;
if (ovalWidth == 0 || ovalHeight == 0)
{
CGContextAddRect(context, rect);
return;
}
CGContextSaveGState(context);
CGContextTranslateCTM (context, CGRectGetMinX(rect),
CGRectGetMinY(rect));
CGContextScaleCTM (context, ovalWidth, ovalHeight);
fw = CGRectGetWidth (rect) / ovalWidth;
fh = CGRectGetHeight (rect) / ovalHeight;
CGContextMoveToPoint(context, fw, fh / 2);
CGContextAddArcToPoint(context, fw, fh, fw / 2, fh, 1);
CGContextAddArcToPoint(context, 0, fh, 0, fh / 2, 1);
CGContextAddArcToPoint(context, 0, 0, fw / 2, 0, 1);
CGContextAddArcToPoint(context, fw, 0, fw, fh / 2, 1);
CGContextClosePath(context);
CGContextRestoreGState(context);
}
bool
PathCG::StrokeContainsPoint(const StrokeOptions &aStrokeOptions,
const Point &aPoint,
const Matrix &aTransform) const
{
Matrix inverse = aTransform;
inverse.Invert();
Point transformedPoint = inverse*aPoint;
// We could probably drop the input transform and just transform the point at the caller?
CGPoint point = {transformedPoint.x, transformedPoint.y};
CGContextRef cg = ScratchContext();
CGContextSaveGState(cg);
CGContextBeginPath(cg);
CGContextAddPath(cg, mPath);
SetStrokeOptions(cg, aStrokeOptions);
CGContextReplacePathWithStrokedPath(cg);
CGContextRestoreGState(cg);
CGPathRef sPath = CGContextCopyPath(cg);
bool inStroke = CGPathContainsPoint(sPath, nullptr, point, false);
CGPathRelease(sPath);
return inStroke;
}
void PlatformCALayer::drawRepaintIndicator(CGContextRef context, PlatformCALayer* platformCALayer, int repaintCount, CGColorRef customBackgroundColor)
{
char text[16]; // that's a lot of repaints
snprintf(text, sizeof(text), "%d", repaintCount);
CGRect indicatorBox = platformCALayer->bounds();
CGContextSaveGState(context);
indicatorBox.size.width = 12 + 10 * strlen(text);
indicatorBox.size.height = 27;
CGContextSetAlpha(context, 0.5f);
CGContextBeginTransparencyLayerWithRect(context, indicatorBox, 0);
if (customBackgroundColor)
CGContextSetFillColorWithColor(context, customBackgroundColor);
else
CGContextSetRGBFillColor(context, 0, 0.5f, 0.25f, 1);
CGContextFillRect(context, indicatorBox);
if (platformCALayer->acceleratesDrawing())
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
else
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
platformCALayer->drawTextAtPoint(context, indicatorBox.origin.x + 5, indicatorBox.origin.y + 22, CGSizeMake(1, -1), 22, text, strlen(text));
CGContextEndTransparencyLayer(context);
CGContextRestoreGState(context);
}
//-----------------------------------------------------------------------------
void CGDrawContext::releaseCGContext (CGContextRef context)
{
if (context)
{
CGContextRestoreGState (context);
}
}
void GraphicsContext::restorePlatformState()
{
// Note: Do not use this function within this class implementation, since we want to avoid the extra
// restore of the secondary context (in GraphicsContextPlatformPrivate.h).
CGContextRestoreGState(platformContext());
m_data->restore();
}
void SkOSWindow::doPaint(void* ctx)
{
#if 0
this->update(NULL);
const SkBitmap& bm = this->getBitmap();
CGImageRef img = SkCreateCGImageRef(bm);
if (img) {
CGRect r = CGRectMake(0, 0, bm.width(), bm.height());
CGContextRef cg = reinterpret_cast<CGContextRef>(ctx);
CGContextSaveGState(cg);
CGContextTranslateCTM(cg, 0, r.size.height);
CGContextScaleCTM(cg, 1, -1);
CGContextDrawImage(cg, r, img);
CGContextRestoreGState(cg);
CGImageRelease(img);
}
#endif
}
void GraphicsContext::drawConvexPolygon(size_t npoints, const FloatPoint* points, bool shouldAntialias)
{
if (paintingDisabled())
return;
if (npoints <= 1)
return;
CGContextRef context = platformContext();
CGContextSaveGState(context);
CGContextSetShouldAntialias(context, shouldAntialias);
CGContextBeginPath(context);
CGContextMoveToPoint(context, points[0].x(), points[0].y());
for (size_t i = 1; i < npoints; i++)
CGContextAddLineToPoint(context, points[i].x(), points[i].y());
CGContextClosePath(context);
if (fillColor().alpha())
CGContextEOFillPath(context);
if (strokeStyle() != NoStroke)
CGContextStrokePath(context);
CGContextRestoreGState(context);
}
bool wxMetaFile::Play(wxDC *dc)
{
if (!m_refData)
return false;
if (!dc->Ok() )
return false;
{
#if wxMAC_USE_CORE_GRAPHICS
QDPictRef cgPictRef = M_METAFILEDATA->m_qdPictRef ;
CGContextRef cg = ((wxMacCGContext*)(dc->GetGraphicContext()))->GetNativeContext() ;
CGRect bounds = QDPictGetBounds( cgPictRef ) ;
CGContextSaveGState(cg);
CGContextTranslateCTM(cg, 0 , bounds.size.width );
CGContextScaleCTM(cg, 1, -1);
QDPictDrawToCGContext( cg , bounds , cgPictRef ) ;
CGContextRestoreGState( cg ) ;
#else
PicHandle pict = (PicHandle) GetHMETAFILE() ;
wxMacPortSetter helper( dc ) ;
DrawPicture( pict , &(**pict).picFrame ) ;
#endif
}
return true;
}
void GraphicsContext::restorePlatformState()
{
if (m_data->context)
{
#if USE(WXGC)
wxGraphicsContext* gc = m_data->context->GetGraphicsContext();
gc->PopState();
#else
#if __WXMAC__
CGContextRef context;
wxGraphicsContext* gc = m_data->context->GetGraphicsContext();
if (gc)
context = (CGContextRef)gc->GetNativeContext();
if (context)
CGContextRestoreGState(context);
#elif __WXMSW__
HDC dc = (HDC)m_data->context->GetHDC();
::RestoreDC(dc, m_data->mswDCStateID);
#elif __WXGTK__
m_data->context->m_currentClippingRegion = m_data->gtkCurrentClipRgn;
m_data->context->m_paintClippingRegion = m_data->gtkPaintClipRgn;
#endif
#endif // USE_WXGC
}
}
void GraphicsContext::fillPath(const Path& path)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
CGContextBeginPath(context);
CGContextAddPath(context, path.platformPath());
if (m_state.fillGradient) {
CGContextSaveGState(context);
if (fillRule() == RULE_EVENODD)
CGContextEOClip(context);
else
CGContextClip(context);
CGContextConcatCTM(context, m_state.fillGradient->gradientSpaceTransform());
m_state.fillGradient->paint(this);
CGContextRestoreGState(context);
return;
}
if (m_state.fillPattern)
applyFillPattern();
fillPathWithFillRule(context, fillRule());
}
static void
_cairo_quartz_surface_release_dest_image(void *abstract_surface,
cairo_rectangle_int16_t *intersect_rect,
cairo_image_surface_t *image,
cairo_rectangle_int16_t *image_rect,
void *image_extra)
{
cairo_quartz_surface_t *surface = abstract_surface;
CGImageRef image_ref;
CGRect rect;
image_ref = create_image_from_surface (image, image_extra);
rect = CGRectMake (image_rect->x, image_rect->y, image_rect->width, image_rect->height);
if (surface->y_grows_down) {
CGContextSaveGState (surface->context);
CGContextTranslateCTM (surface->context, 0, image_rect->height + 2 * image_rect->y);
CGContextScaleCTM (surface->context, 1, -1);
}
CGContextDrawImage(surface->context, rect, image_ref);
CFRelease (image_ref);
if (surface->y_grows_down) {
CGContextRestoreGState (surface->context);
}
cairo_surface_destroy ((cairo_surface_t *)image);
free (image_extra);
}
void ImageBuffer::putByteArray(Multiply multiplied, ByteArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint)
{
if (!m_context->isAcceleratedContext()) {
m_data.putData(source, sourceSize, sourceRect, destPoint, internalSize(), m_context->isAcceleratedContext(), multiplied == Unmultiplied);
return;
}
#if USE(IOSURFACE_CANVAS_BACKING_STORE)
// Make a copy of the source to ensure the bits don't change before being drawn
IntSize sourceCopySize(sourceRect.width(), sourceRect.height());
OwnPtr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, 1, ColorSpaceDeviceRGB, Unaccelerated);
if (!sourceCopy)
return;
sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context()->isAcceleratedContext(), multiplied == Unmultiplied);
// Set up context for using drawImage as a direct bit copy
CGContextRef destContext = context()->platformContext();
CGContextSaveGState(destContext);
CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
wkCGContextResetClip(destContext);
CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
CGContextSetAlpha(destContext, 1.0);
CGContextSetBlendMode(destContext, kCGBlendModeCopy);
CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);
// Draw the image in CG coordinate space
IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), internalSize().height() - (destPoint.y()+sourceRect.y()) - sourceRect.height());
IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
RetainPtr<CGImageRef> sourceCopyImage(AdoptCF, sourceCopy->copyNativeImage());
CGContextDrawImage(destContext, destRectInCGCoords, sourceCopyImage.get());
CGContextRestoreGState(destContext);
#endif
}
void PlatformCALayer::drawRepaintIndicator(CGContextRef context, PlatformCALayer* platformCALayer, int repaintCount, CGColorRef customBackgroundColor)
{
char text[16]; // that's a lot of repaints
snprintf(text, sizeof(text), "%d", repaintCount);
CGRect indicatorBox = platformCALayer->bounds();
indicatorBox.size.width = 12 + 10 * strlen(text);
indicatorBox.size.height = 27;
CGContextSaveGState(context);
CGContextSetAlpha(context, 0.5f);
CGContextBeginTransparencyLayerWithRect(context, indicatorBox, 0);
if (customBackgroundColor)
CGContextSetFillColorWithColor(context, customBackgroundColor);
else
CGContextSetRGBFillColor(context, 0, 0.5f, 0.25f, 1);
CGContextFillRect(context, indicatorBox);
if (platformCALayer->acceleratesDrawing())
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
else
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
CGContextSetTextMatrix(context, CGAffineTransformMakeScale(1, -1));
CGContextSelectFont(context, "Helvetica", 22, kCGEncodingMacRoman);
CGContextShowTextAtPoint(context, indicatorBox.origin.x + 5, indicatorBox.origin.y + 22, text, strlen(text));
#pragma clang diagnostic pop
CGContextEndTransparencyLayer(context);
CGContextRestoreGState(context);
}
void TileGrid::drawTileMapContents(CGContextRef context, CGRect layerBounds) const
{
CGContextSetRGBFillColor(context, 0.3, 0.3, 0.3, 1);
CGContextFillRect(context, layerBounds);
CGFloat scaleFactor = layerBounds.size.width / m_controller.bounds().width();
CGFloat contextScale = scaleFactor / m_scale;
CGContextScaleCTM(context, contextScale, contextScale);
for (TileMap::const_iterator it = m_tiles.begin(), end = m_tiles.end(); it != end; ++it) {
const TileInfo& tileInfo = it->value;
PlatformCALayer* tileLayer = tileInfo.layer.get();
CGFloat red = 1;
CGFloat green = 1;
CGFloat blue = 1;
CGFloat alpha = 1;
if (tileInfo.hasStaleContent) {
red = 0.25;
green = 0.125;
blue = 0;
} else if (m_controller.shouldAggressivelyRetainTiles() && tileInfo.cohort != VisibleTileCohort) {
red = 0.8;
green = 0.8;
blue = 0.8;
}
TileCohort newestCohort = newestTileCohort();
TileCohort oldestCohort = oldestTileCohort();
if (!m_controller.shouldAggressivelyRetainTiles() && tileInfo.cohort != VisibleTileCohort && newestCohort > oldestCohort)
alpha = 1 - (static_cast<float>((newestCohort - tileInfo.cohort)) / (newestCohort - oldestCohort));
CGContextSetRGBFillColor(context, red, green, blue, alpha);
if (tileLayer->superlayer()) {
CGContextSetLineWidth(context, 0.5 / contextScale);
CGContextSetRGBStrokeColor(context, 0, 0, 0, 1);
} else {
CGContextSetLineWidth(context, 1 / contextScale);
CGContextSetRGBStrokeColor(context, 0.2, 0.1, 0.9, 1);
}
CGRect frame = CGRectMake(tileLayer->position().x(), tileLayer->position().y(), tileLayer->bounds().size().width(), tileLayer->bounds().size().height());
CGContextFillRect(context, frame);
CGContextStrokeRect(context, frame);
CGContextSetRGBFillColor(context, 0, 0, 0, 0.5);
String repaintCount = String::number(m_tileRepaintCounts.get(tileLayer));
CGContextSaveGState(context);
tileLayer->drawTextAtPoint(context, frame.origin.x + 64, frame.origin.y + 192, CGSizeMake(3, -3), 58,
repaintCount.ascii().data(), repaintCount.length());
CGContextRestoreGState(context);
}
}
void GraphicsContext::fillRect(const FloatRect& rect)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
if (m_state.fillGradient) {
CGContextSaveGState(context);
CGContextConcatCTM(context, m_state.fillGradient->gradientSpaceTransform());
if (hasShadow()) {
CGLayerRef layer = CGLayerCreateWithContext(context, CGSizeMake(rect.width(), rect.height()), 0);
CGContextRef layerContext = CGLayerGetContext(layer);
m_state.fillGradient->paint(layerContext);
CGContextDrawLayerAtPoint(context, CGPointMake(rect.left(), rect.top()), layer);
CGLayerRelease(layer);
} else {
CGContextClipToRect(context, rect);
m_state.fillGradient->paint(this);
}
CGContextRestoreGState(context);
return;
}
if (m_state.fillPattern)
applyFillPattern();
CGContextFillRect(context, rect);
}
static void addRoundedRectToPath(CGContextRef context, CGRect rect,
float ovalWidth,
float ovalHeight)
{
float fw, fh;
// If either ovalWidth or ovalHeight is 0, draw a regular rectangle.
if (ovalWidth == 0 || ovalHeight == 0) {
CGContextAddRect(context, rect);
}else{
CGContextSaveGState(context);
// Translate to lower-left corner of rectangle.
CGContextTranslateCTM(context, CGRectGetMinX(rect),
CGRectGetMinY(rect));
// Scale by the oval width and height so that
// each rounded corner is 0.5 units in radius.
CGContextScaleCTM(context, ovalWidth, ovalHeight);
// Unscale the rectangle width by the amount of the X scaling.
fw = CGRectGetWidth(rect) / ovalWidth;
// Unscale the rectangle height by the amount of the Y scaling.
fh = CGRectGetHeight(rect) / ovalHeight;
// Start at the right edge of the rect, at the midpoint in Y.
CGContextMoveToPoint(context, fw, fh/2);
// Segment 1
CGContextAddArcToPoint(context, fw, fh, fw/2, fh, 0.5);
// Segment 2
CGContextAddArcToPoint(context, 0, fh, 0, fh/2, 0.5);
// Segment 3
CGContextAddArcToPoint(context, 0, 0, fw/2, 0, 0.5);
// Segment 4
CGContextAddArcToPoint(context, fw, 0, fw, fh/2, 0.5);
// Closing the path adds the last segment.
CGContextClosePath(context);
CGContextRestoreGState(context);
}
}
static void quartzgen_end_page(GVJ_t *job)
{
/* end the page (if this is a paged context) and graphics state */
CGContextRef context = (CGContextRef)job->context;
CGContextRestoreGState(context);
CGContextEndPage(context);
}
void doRotatedEllipses(CGContextRef context)
{
int i, totreps = 144;
float tint = 1.0, tintIncrement = 1.0/totreps;
// Create a new transform consisting of a 45 degrees rotation.
CGAffineTransform theTransform = CGAffineTransformMakeRotation(M_PI/4);
// Apply a scale to the transform just created.
theTransform = CGAffineTransformScale(theTransform, 1, 2);
// Place the first ellipse at a good location.
CGContextTranslateCTM(context, 100., 100.);
for(i=0 ; i < totreps ; i++){
// Make a snapshot the coordinate system.
CGContextSaveGState(context);
// Set up the coordinate system for the rotated ellipse.
CGContextConcatCTM(context, theTransform);
CGContextBeginPath(context);
CGContextAddArc(context, 0., 0., 45., 0., 2*M_PI, 0);
// Set the fill color for this instance of the ellipse.
CGContextSetRGBFillColor(context, tint, 0., 0., 1.0);
CGContextDrawPath(context, kCGPathFill);
// Restore the coordinate system to that of the snapshot.
CGContextRestoreGState(context);
// Compute the next tint color.
tint -= tintIncrement;
// Move over by 1 unit in x for the next ellipse.
CGContextTranslateCTM(context, 1.0, 0.0);
}
}
