void CanvasRenderingContext2D::applyFillPattern()
{
GraphicsContext* c = drawingContext();
if (!c)
return;
#if PLATFORM(CG)
// Check for case where the pattern is already set.
CGAffineTransform m = CGContextGetCTM(c->platformContext());
if (state().m_appliedFillPattern
&& CGAffineTransformEqualToTransform(m, state().m_fillStylePatternTransform))
return;
CanvasPattern* pattern = state().m_fillStyle->pattern();
if (!pattern)
return;
CGPatternRef platformPattern = pattern->createPattern(m);
if (!platformPattern)
return;
CGColorSpaceRef patternSpace = CGColorSpaceCreatePattern(0);
CGContextSetFillColorSpace(c->platformContext(), patternSpace);
CGColorSpaceRelease(patternSpace);
const CGFloat patternAlpha = 1;
CGContextSetFillPattern(c->platformContext(), platformPattern, &patternAlpha);
CGPatternRelease(platformPattern);
state().m_fillStylePatternTransform = m;
#elif PLATFORM(QT)
fprintf(stderr, "FIXME: CanvasRenderingContext2D::applyFillPattern\n");
#endif
state().m_appliedFillPattern = true;
}
void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
{
if ( m_selected.IsOk() )
{
m_selected.EndRawAccess() ;
wxDELETE(m_graphicContext);
}
m_selected = bitmap;
if (m_selected.IsOk())
{
if ( m_selected.GetDepth() != 1 )
m_selected.UseAlpha() ;
m_selected.BeginRawAccess() ;
m_width = bitmap.GetScaledWidth();
m_height = bitmap.GetScaledHeight();
m_contentScaleFactor = bitmap.GetScaleFactor();
CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
CGContextRef bmCtx = (CGContextRef) m_selected.GetHBITMAP();
if ( bmCtx )
{
CGContextSetFillColorSpace( bmCtx, genericColorSpace );
CGContextSetStrokeColorSpace( bmCtx, genericColorSpace );
SetGraphicsContext( wxGraphicsContext::CreateFromNative( bmCtx ) );
}
m_ok = (m_graphicContext != NULL) ;
}
else
{
m_ok = false;
}
}
wxMetafileRefData::wxMetafileRefData( int width, int height)
{
Init();
m_width = width;
m_height = height;
CGRect r = CGRectMake( 0 , 0 , width , height );
CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
m_data.reset(data);
CGDataConsumerRef dataConsumer = wxMacCGDataConsumerCreateWithCFData(data);
m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
CGDataConsumerRelease( dataConsumer );
if ( m_context )
{
CGPDFContextBeginPage(m_context, NULL);
CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
CGContextSetFillColorSpace( m_context, genericColorSpace );
CGContextSetStrokeColorSpace( m_context, genericColorSpace );
CGContextTranslateCTM( m_context , 0 , height ) ;
CGContextScaleCTM( m_context , 1 , -1 ) ;
}
}
void drawWithColorBlendMode(CGContextRef context, CFURLRef url)
{
// A pleasant green color.
float green[4] = { 0.584, 0.871, 0.318, 1.0 };
CGRect insetRect, pdfRect;
// Create a CGPDFDocument object from the URL.
CGPDFDocumentRef pdfDoc = CGPDFDocumentCreateWithURL(url);
if(pdfDoc == NULL){
fprintf(stderr, "Couldn't create CGPDFDocument from URL!\n");
return;
}
// Obtain the media box for page 1 of the PDF document.
pdfRect = CGPDFDocumentGetMediaBox(pdfDoc, 1);
// Set the origin of the rectangle to (0,0).
pdfRect.origin.x = pdfRect.origin.y = 0;
// Graphic 1, the left portion of the figure.
CGContextTranslateCTM(context, 20, 10 + CGRectGetHeight(pdfRect)/2);
// Draw the PDF document.
CGContextDrawPDFDocument(context, pdfRect, pdfDoc, 1);
// Set the fill color space to that returned by getTheCalibratedRGBColorSpace.
CGContextSetFillColorSpace(context, getTheCalibratedRGBColorSpace());
// Set the fill color to green.
CGContextSetFillColor(context, green);
// Graphic 2, the top-right portion of the figure.
CGContextTranslateCTM(context, CGRectGetWidth(pdfRect) + 10,
CGRectGetHeight(pdfRect)/2 + 10);
// Draw the PDF document again.
CGContextDrawPDFDocument(context, pdfRect, pdfDoc, 1);
// Make a fill rectangle that is the same size as the PDF document
// but inset each side by 80 units in x and 20 units in y.
insetRect = CGRectInset(pdfRect, 80, 20);
// Fill the rectangle with green. Because the fill color is opaque and
// the blend mode is Normal, this obscures the drawing underneath.
CGContextFillRect(context, insetRect);
// Graphic 3, the bottom-right portion of the figure.
CGContextTranslateCTM(context, 0, -(10 + CGRectGetHeight(pdfRect)));
// Draw the PDF document again.
CGContextDrawPDFDocument(context, pdfRect, pdfDoc, 1);
// Set the blend mode to kCGBlendModeColor which will
// colorize the destination with subsequent drawing.
CGContextSetBlendMode(context, kCGBlendModeColor);
// Draw the rectangle on top of the PDF document. The portion of the
// background that is covered by the rectangle is colorized
// with the fill color.
CGContextFillRect(context, insetRect);
// Release the CGPDFDocumentRef the code created.
CGPDFDocumentRelease(pdfDoc);
}
//-----------------------------------------------------------------------------
void CGDrawContext::init ()
{
CGContextSaveGState (cgContext);
CGContextSetShouldAntialias (cgContext, false);
CGContextSetFillColorSpace (cgContext, GetCGColorSpace ());
CGContextSetStrokeColorSpace (cgContext, GetCGColorSpace ());
CGContextSaveGState (cgContext);
CGAffineTransform cgCTM = CGAffineTransformMake (1.0, 0.0, 0.0, -1.0, 0.0, 0.0);
CGContextSetTextMatrix (cgContext, cgCTM);
CDrawContext::init ();
}
void doIndexedColorDrawGraphics(CGContextRef context)
{
CGColorSpaceRef theBaseRGBSpace = getTheCalibratedRGBColorSpace();
CGColorSpaceRef theIndexedSpace = NULL;
unsigned char lookupTable[6];
float opaqueRed[] = { 0, 1 }; // index, alpha
float aBlue[] = { 1, 1 }; // index, alpha
// Set the first 3 values in the lookup table to a red of
// 169/255 = 0.663, no green, and blue = 8/255 = 0.031. This makes
// the first entry in the lookup table a shade of red.
lookupTable[0] = 169; lookupTable[1] = 0; lookupTable[2] = 8;
// Set the second 3 values in the lookup table to a red value
// of 123/255 = 0.482, a green value of 158/255 = 0.62, and
// a blue value of 222/255 = 0.871. This makes the second entry
// in the lookup table a shade of blue.
lookupTable[3] = 123; lookupTable[4] = 158; lookupTable[5] = 222;
// Create the indexed color space with this color lookup table,
// using the RGB color space as the base color space and a 2 element
// color lookup table to characterize the indexed color space.
theIndexedSpace = CGColorSpaceCreateIndexed(theBaseRGBSpace, 1, lookupTable);
if(theIndexedSpace != NULL){
CGContextSetStrokeColorSpace(context, theIndexedSpace);
CGContextSetFillColorSpace(context, theIndexedSpace);
// Release the color space this code created since it is no
// longer needed in this routine.
CGColorSpaceRelease(theIndexedSpace);
// Set the stroke color to an opaque blue.
CGContextSetStrokeColor(context, aBlue);
// Set the fill color to an opaque red.
CGContextSetFillColor(context, opaqueRed);
CGContextSetLineWidth(context, 8.);
// Draw the first rectangle.
CGContextBeginPath(context);
CGContextAddRect(context, CGRectMake(20., 20., 100., 100.));
CGContextDrawPath(context, kCGPathFillStroke);
// Continue to use the stroke colorspace already set
// but change the stroke alpha value to a semitransparent value
// while leaving the index value unchanged.
aBlue[1] = 0.5;
CGContextSetStrokeColor(context, aBlue);
// Draw another rectangle to the right of the first one.
CGContextBeginPath(context);
CGContextAddRect(context, CGRectMake(140., 20., 100., 100.));
CGContextDrawPath(context, kCGPathFillStroke);
}else
fprintf(stderr, "Couldn't make the indexed color space!\n");
}
void CanvasRenderingContext2D::applyFillPattern()
{
GraphicsContext* c = drawingContext();
if (!c)
return;
#if PLATFORM(CG)
// Check for case where the pattern is already set.
CGAffineTransform m = CGContextGetCTM(c->platformContext());
if (state().m_appliedFillPattern
&& CGAffineTransformEqualToTransform(m, state().m_fillStylePatternTransform))
return;
CanvasPattern* pattern = state().m_fillStyle->pattern();
if (!pattern)
return;
CGPatternRef platformPattern = pattern->createPattern(m);
if (!platformPattern)
return;
CGColorSpaceRef patternSpace = CGColorSpaceCreatePattern(0);
CGContextSetFillColorSpace(c->platformContext(), patternSpace);
CGColorSpaceRelease(patternSpace);
const CGFloat patternAlpha = 1;
CGContextSetFillPattern(c->platformContext(), platformPattern, &patternAlpha);
CGPatternRelease(platformPattern);
state().m_fillStylePatternTransform = m;
#elif PLATFORM(QT)
notImplemented();
#elif PLATFORM(CAIRO) && !PLATFORM(BAL)
CanvasPattern* pattern = state().m_fillStyle->pattern();
if (!pattern)
return;
cairo_t* cr = c->platformContext();
cairo_matrix_t m;
cairo_get_matrix(cr, &m);
cairo_pattern_t* platformPattern = pattern->createPattern(m);
if (!platformPattern)
return;
cairo_set_source(cr, platformPattern);
cairo_pattern_destroy(platformPattern);
#elif PLATFORM(BAL)
notImplemented();
#endif
state().m_appliedFillPattern = true;
}
void GraphicsContext::applyFillPattern()
{
CGContextRef cgContext = platformContext();
RetainPtr<CGPatternRef> platformPattern(AdoptCF, m_state.fillPattern->createPlatformPattern(getCTM()));
if (!platformPattern)
return;
RetainPtr<CGColorSpaceRef> patternSpace(AdoptCF, CGColorSpaceCreatePattern(0));
CGContextSetFillColorSpace(cgContext, patternSpace.get());
const CGFloat patternAlpha = 1;
CGContextSetFillPattern(cgContext, platformPattern.get(), &patternAlpha);
}
void wxMemoryDC::DoSelect( const wxBitmap& bitmap )
{
if ( m_selected.Ok() )
{
#if wxMAC_USE_CORE_GRAPHICS
m_selected.EndRawAccess() ;
delete m_graphicContext ;
m_graphicContext = NULL ;
#else
// TODO: UnlockPixels( GetGWorldPixMap(MAC_WXHBITMAP(m_selected.GetHBITMAP())) );
#endif
}
m_selected = bitmap;
if (m_selected.Ok())
{
#if wxMAC_USE_CORE_GRAPHICS
if ( m_selected.GetDepth() != 1 )
m_selected.UseAlpha() ;
m_selected.BeginRawAccess() ;
m_width = bitmap.GetWidth();
m_height = bitmap.GetHeight();
CGColorSpaceRef genericColorSpace = wxMacGetGenericRGBColorSpace();
CGContextRef bmCtx = (CGContextRef) m_selected.GetHBITMAP();
if ( bmCtx )
{
CGContextSetFillColorSpace( bmCtx, genericColorSpace );
CGContextSetStrokeColorSpace( bmCtx, genericColorSpace );
SetGraphicsContext( wxGraphicsContext::CreateFromNative( bmCtx ) );
}
m_ok = (m_graphicContext != NULL) ;
#else
m_macPort = m_selected.GetHBITMAP( &m_macMask ) ;
m_ok = (m_macPort != NULL) ;
if (m_ok)
{
LockPixels( GetGWorldPixMap( (CGrafPtr) m_macPort ) ) ;
SetRectRgn( (RgnHandle) m_macBoundaryClipRgn , 0 , 0 , m_selected.GetWidth() , m_selected.GetHeight() ) ;
CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
}
#endif
}
else
{
m_ok = false;
}
}
//-----------------------------------------------------------------------------
void CGDrawContext::init ()
{
CGContextSaveGState (cgContext);
CGContextSetAllowsAntialiasing (cgContext, true);
CGContextSetAllowsFontSmoothing (cgContext, true);
CGContextSetAllowsFontSubpixelPositioning (cgContext, true);
CGContextSetAllowsFontSubpixelQuantization (cgContext, true);
CGContextSetShouldAntialias (cgContext, false);
CGContextSetFillColorSpace (cgContext, GetCGColorSpace ());
CGContextSetStrokeColorSpace (cgContext, GetCGColorSpace ());
CGContextSaveGState (cgContext);
CGAffineTransform cgCTM = CGAffineTransformMake (1.0, 0.0, 0.0, -1.0, 0.0, 0.0);
CGContextSetTextMatrix (cgContext, cgCTM);
CDrawContext::init ();
}
void doAlphaOnlyContext(CGContextRef context)
{
CGImageRef mask = NULL;
// This code is going to capture the alpha coverage
// of the drawing done by the doAlphaRects routine.
// The value passed here as the width and height is
// the size of the bounding rectangle of that drawing.
size_t width = 520, height = 400;
CGContextRef alphaContext = createAlphaOnlyContext(width, height);
if(context == NULL){
fprintf(stderr, "Couldn't create the alpha-only context!\n");
return;
}
// Draw the content to the alpha-only context, capturing
// the alpha coverage. The doAlphaRects routine paints
// a series of translucent red rectangles.
doAlphaRects(alphaContext);
// Finished drawing to the context and now the raster contains
// the alpha data captured from the drawing. Create
// the mask from the data in the context.
mask = createMaskFromAlphaOnlyContext(alphaContext);
// This code is now finshed with the context so it can
// release it.
CGContextRelease(alphaContext);
if(mask == NULL){
return;
}
// Set the fill color space.
CGContextSetFillColorSpace(context, getTheCalibratedRGBColorSpace());
float opaqueBlue[] = { 0.11, 0.208, 0.451, 1.0 };
// Set the painting color to opaque blue.
CGContextSetFillColor(context, opaqueBlue);
// Draw the mask, painting the mask with blue. This colorizes
// the image to blue and it is as if we painted the
// alpha rects with blue instead of red.
CGContextDrawImage(context, CGRectMake(0, 0, width, height), mask);
// Releasing the mask will cause Quartz to release the data provider
// and therefore the raster memory used to create the context.
CGImageRelease(mask);
}
void drawWithGlobalAlpha(CGContextRef context)
{
int i;
CGRect rect = CGRectMake(40., 210., 100., 100.);
float color[4] = { 1.0, 0.0, 0.0, 1.0 }; // opaque red
// Set the fill color space to that returned by getTheCalibratedRGBColorSpace.
CGContextSetFillColorSpace(context, getTheCalibratedRGBColorSpace());
CGContextSetFillColor(context, color);
for(i = 0; i < 2 ; i++){
CGContextSaveGState(context);
// Paint the leftmost rect on this row with 100% opaque red.
CGContextFillRect(context, rect);
CGContextTranslateCTM(context, rect.size.width + 70., 0.);
// Set the alpha value of this rgba color to 0.5.
color[3] = 0.5;
// Use the new color as the fill color in the graphics state.
CGContextSetFillColor(context, color);
// Paint the center rect on this row with 50% opaque red.
CGContextFillRect(context, rect);
CGContextTranslateCTM(context, rect.size.width + 70., 0.);
// Set the alpha value of this rgba color to 0.25.
color[3] = 0.25;
// Use the new color as the fill color in the graphics state.
CGContextSetFillColor(context, color);
// Paint the rightmost rect on this row with 25% opaque red.
CGContextFillRect(context, rect);
CGContextRestoreGState(context);
// After restoring the graphics state, the fill color is set to
// that prior to calling CGContextSaveGState, that is, opaque
// red. The coordinate system is also restored.
// Now set the context global alpha value to 50% opaque.
CGContextSetAlpha(context, 0.5);
// Translate down for a second row of rectangles.
CGContextTranslateCTM(context, 0., -(rect.size.height + 70.));
// Reset the alpha value of the color array to fully opaque.
color[3] = 1.0;
}
}
void doColorSpaceFillAndStroke(CGContextRef context)
{
CGColorSpaceRef theColorSpace = getTheCalibratedRGBColorSpace();
float opaqueRed[] = { 0.663, 0.0, 0.031, 1.0 }; // red,green,blue,alpha
float aBlue[] = { 0.482, 0.62, 0.871, 1.0 }; // red,green,blue,alpha
// Set the fill color space to be the generic calibrated RGB color space.
CGContextSetFillColorSpace(context, theColorSpace);
// Set the fill color to opaque red. The number of elements in the
// array passed to this function must be the number of color
// components in the current fill color space plus 1 for alpha.
CGContextSetFillColor(context, opaqueRed);
// Set the stroke color space to be the generic calibrated RGB color space.
CGContextSetStrokeColorSpace(context, theColorSpace);
// Set the stroke color to opaque blue. The number of elements
// in the array passed to this function must be the number of color
// components in the current stroke color space plus 1 for alpha.
CGContextSetStrokeColor(context, aBlue);
CGContextSetLineWidth(context, 8.);
// Rectangle 1.
CGContextBeginPath(context);
CGContextAddRect(context, CGRectMake(20., 20., 100., 100.));
CGContextDrawPath(context, kCGPathFillStroke);
// Continue to use the stroke colorspace already set
// but change the stroke alpha value to a semitransparent blue.
aBlue[3] = 0.5;
CGContextSetStrokeColor(context, aBlue);
// Rectangle 2.
CGContextBeginPath(context);
CGContextAddRect(context, CGRectMake(140., 20., 100., 100.));
CGContextDrawPath(context, kCGPathFillStroke);
// Don't release the color space since this routine
// didn't create it.
}
void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& destRect, BlendMode blendMode)
{
if (!nativeImageForCurrentFrame())
return;
if (!patternTransform.isInvertible())
return;
CGContextRef context = ctxt->platformContext();
GraphicsContextStateSaver stateSaver(*ctxt);
CGContextClipToRect(context, destRect);
ctxt->setCompositeOperation(op, blendMode);
CGContextTranslateCTM(context, destRect.x(), destRect.y() + destRect.height());
CGContextScaleCTM(context, 1, -1);
// Compute the scaled tile size.
float scaledTileHeight = tileRect.height() * narrowPrecisionToFloat(patternTransform.d());
// We have to adjust the phase to deal with the fact we're in Cartesian space now (with the bottom left corner of destRect being
// the origin).
float adjustedX = phase.x() - destRect.x() + tileRect.x() * narrowPrecisionToFloat(patternTransform.a()); // We translated the context so that destRect.x() is the origin, so subtract it out.
float adjustedY = destRect.height() - (phase.y() - destRect.y() + tileRect.y() * narrowPrecisionToFloat(patternTransform.d()) + scaledTileHeight);
CGImageRef tileImage = nativeImageForCurrentFrame();
float h = CGImageGetHeight(tileImage);
RetainPtr<CGImageRef> subImage;
if (tileRect.size() == size())
subImage = tileImage;
else {
// Copying a sub-image out of a partially-decoded image stops the decoding of the original image. It should never happen
// because sub-images are only used for border-image, which only renders when the image is fully decoded.
ASSERT(h == height());
subImage = adoptCF(CGImageCreateWithImageInRect(tileImage, tileRect));
}
// Adjust the color space.
subImage = Image::imageWithColorSpace(subImage.get(), styleColorSpace);
// Leopard has an optimized call for the tiling of image patterns, but we can only use it if the image has been decoded enough that
// its buffer is the same size as the overall image. Because a partially decoded CGImageRef with a smaller width or height than the
// overall image buffer needs to tile with "gaps", we can't use the optimized tiling call in that case.
// FIXME: We cannot use CGContextDrawTiledImage with scaled tiles on Leopard, because it suffers from rounding errors. Snow Leopard is ok.
float scaledTileWidth = tileRect.width() * narrowPrecisionToFloat(patternTransform.a());
float w = CGImageGetWidth(tileImage);
if (w == size().width() && h == size().height() && !spaceSize().width() && !spaceSize().height())
CGContextDrawTiledImage(context, FloatRect(adjustedX, adjustedY, scaledTileWidth, scaledTileHeight), subImage.get());
else {
// On Leopard and newer, this code now only runs for partially decoded images whose buffers do not yet match the overall size of the image.
static const CGPatternCallbacks patternCallbacks = { 0, drawPatternCallback, patternReleaseCallback };
CGAffineTransform matrix = CGAffineTransformMake(narrowPrecisionToCGFloat(patternTransform.a()), 0, 0, narrowPrecisionToCGFloat(patternTransform.d()), adjustedX, adjustedY);
matrix = CGAffineTransformConcat(matrix, CGContextGetCTM(context));
// The top of a partially-decoded image is drawn at the bottom of the tile. Map it to the top.
matrix = CGAffineTransformTranslate(matrix, 0, size().height() - h);
#if PLATFORM(IOS)
matrix = CGAffineTransformScale(matrix, 1, -1);
matrix = CGAffineTransformTranslate(matrix, 0, -h);
#endif
CGImageRef platformImage = CGImageRetain(subImage.get());
RetainPtr<CGPatternRef> pattern = adoptCF(CGPatternCreate(platformImage, CGRectMake(0, 0, tileRect.width(), tileRect.height()), matrix,
tileRect.width() + spaceSize().width() * (1 / narrowPrecisionToFloat(patternTransform.a())),
tileRect.height() + spaceSize().height() * (1 / narrowPrecisionToFloat(patternTransform.d())),
kCGPatternTilingConstantSpacing, true, &patternCallbacks));
if (!pattern)
return;
RetainPtr<CGColorSpaceRef> patternSpace = adoptCF(CGColorSpaceCreatePattern(0));
CGFloat alpha = 1;
RetainPtr<CGColorRef> color = adoptCF(CGColorCreateWithPattern(patternSpace.get(), pattern.get(), &alpha));
CGContextSetFillColorSpace(context, patternSpace.get());
// FIXME: Really want a public API for this. It is just CGContextSetBaseCTM(context, CGAffineTransformIdentiy).
wkSetBaseCTM(context, CGAffineTransformIdentity);
CGContextSetPatternPhase(context, CGSizeZero);
CGContextSetFillColorWithColor(context, color.get());
CGContextFillRect(context, CGContextGetClipBoundingBox(context));
}
stateSaver.restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
void Image::drawPattern(GraphicsContext* ctxt, const FloatRect& tileRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& destRect)
{
if (!nativeImageForCurrentFrame())
return;
ASSERT(patternTransform.isInvertible());
if (!patternTransform.isInvertible())
// Avoid a hang under CGContextDrawTiledImage on release builds.
return;
CGContextRef context = ctxt->platformContext();
ctxt->save();
CGContextClipToRect(context, destRect);
ctxt->setCompositeOperation(op);
CGContextTranslateCTM(context, destRect.x(), destRect.y() + destRect.height());
CGContextScaleCTM(context, 1, -1);
// Compute the scaled tile size.
float scaledTileHeight = tileRect.height() * narrowPrecisionToFloat(patternTransform.d());
// We have to adjust the phase to deal with the fact we're in Cartesian space now (with the bottom left corner of destRect being
// the origin).
float adjustedX = phase.x() - destRect.x() + tileRect.x() * narrowPrecisionToFloat(patternTransform.a()); // We translated the context so that destRect.x() is the origin, so subtract it out.
float adjustedY = destRect.height() - (phase.y() - destRect.y() + tileRect.y() * narrowPrecisionToFloat(patternTransform.d()) + scaledTileHeight);
CGImageRef tileImage = nativeImageForCurrentFrame();
float h = CGImageGetHeight(tileImage);
RetainPtr<CGImageRef> subImage;
if (tileRect.size() == size())
subImage = tileImage;
else {
// Copying a sub-image out of a partially-decoded image stops the decoding of the original image. It should never happen
// because sub-images are only used for border-image, which only renders when the image is fully decoded.
ASSERT(h == height());
subImage.adoptCF(CGImageCreateWithImageInRect(tileImage, tileRect));
}
// Adjust the color space.
subImage = imageWithColorSpace(subImage.get(), styleColorSpace);
#ifndef BUILDING_ON_TIGER
// Leopard has an optimized call for the tiling of image patterns, but we can only use it if the image has been decoded enough that
// its buffer is the same size as the overall image. Because a partially decoded CGImageRef with a smaller width or height than the
// overall image buffer needs to tile with "gaps", we can't use the optimized tiling call in that case.
// FIXME: Could create WebKitSystemInterface SPI for CGCreatePatternWithImage2 and probably make Tiger tile faster as well.
// FIXME: We cannot use CGContextDrawTiledImage with scaled tiles on Leopard, because it suffers from rounding errors. Snow Leopard is ok.
float scaledTileWidth = tileRect.width() * narrowPrecisionToFloat(patternTransform.a());
float w = CGImageGetWidth(tileImage);
#ifdef BUILDING_ON_LEOPARD
if (w == size().width() && h == size().height() && scaledTileWidth == tileRect.width() && scaledTileHeight == tileRect.height())
#else
if (w == size().width() && h == size().height())
#endif
CGContextDrawTiledImage(context, FloatRect(adjustedX, adjustedY, scaledTileWidth, scaledTileHeight), subImage.get());
else {
#endif
// On Leopard, this code now only runs for partially decoded images whose buffers do not yet match the overall size of the image.
// On Tiger this code runs all the time. This code is suboptimal because the pattern does not reference the image directly, and the
// pattern is destroyed before exiting the function. This means any decoding the pattern does doesn't end up cached anywhere, so we
// redecode every time we paint.
static const CGPatternCallbacks patternCallbacks = { 0, drawPatternCallback, NULL };
CGAffineTransform matrix = CGAffineTransformMake(narrowPrecisionToCGFloat(patternTransform.a()), 0, 0, narrowPrecisionToCGFloat(patternTransform.d()), adjustedX, adjustedY);
matrix = CGAffineTransformConcat(matrix, CGContextGetCTM(context));
// The top of a partially-decoded image is drawn at the bottom of the tile. Map it to the top.
matrix = CGAffineTransformTranslate(matrix, 0, size().height() - h);
RetainPtr<CGPatternRef> pattern(AdoptCF, CGPatternCreate(subImage.get(), CGRectMake(0, 0, tileRect.width(), tileRect.height()),
matrix, tileRect.width(), tileRect.height(),
kCGPatternTilingConstantSpacing, true, &patternCallbacks));
if (!pattern) {
ctxt->restore();
return;
}
RetainPtr<CGColorSpaceRef> patternSpace(AdoptCF, CGColorSpaceCreatePattern(0));
CGFloat alpha = 1;
RetainPtr<CGColorRef> color(AdoptCF, CGColorCreateWithPattern(patternSpace.get(), pattern.get(), &alpha));
CGContextSetFillColorSpace(context, patternSpace.get());
// FIXME: Really want a public API for this. It is just CGContextSetBaseCTM(context, CGAffineTransformIdentiy).
wkSetPatternBaseCTM(context, CGAffineTransformIdentity);
CGContextSetPatternPhase(context, CGSizeZero);
CGContextSetFillColorWithColor(context, color.get());
CGContextFillRect(context, CGContextGetClipBoundingBox(context));
#ifndef BUILDING_ON_TIGER
}
#endif
ctxt->restore();
if (imageObserver())
imageObserver()->didDraw(this);
}
bool FBVLC_Mac::onCoreGraphicsDraw(FB::CoreGraphicsDraw *evt, FB::PluginWindowMacCG*)
{
boost::lock_guard<boost::mutex> lock( m_frameGuard );
FB::Rect bounds(evt->bounds);
//FB::Rect clip(evt->clip);
short width = bounds.right - bounds.left, height = bounds.bottom - bounds.top;
CGContextRef cgContext(evt->context);
CGContextSaveGState(cgContext);
CGContextTranslateCTM(cgContext, 0.0, height);
CGContextScaleCTM(cgContext, 1.0, -1.0);
CGColorSpaceRef cSpace = CGColorSpaceCreateDeviceRGB();
CGContextSetFillColorSpace(cgContext, cSpace);
CGColorRef bgColor = CGColorCreate(cSpace, m_bgComponents);
CGContextSetFillColorWithColor(cgContext, bgColor);
if ( 0 != m_media_width && 0 != m_media_height ) {
CGRect imgRect = {
{ (width - m_media_width) / 2, (height - m_media_height) / 2 },
{ m_media_width, m_media_height }
};
const std::vector<char>& fb = vlc::vmem::frame_buf();
CGContextRef frameBmpCtx =
CGBitmapContextCreate( (void*)&fb[0], m_media_width, m_media_height, 8,
m_media_width * vlc::DEF_PIXEL_BYTES, cSpace,
kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little );
CGImageRef frameImage = CGBitmapContextCreateImage( frameBmpCtx );
CGContextDrawImage( cgContext, imgRect, frameImage );
CGImageRelease( frameImage );
CGContextRelease( frameBmpCtx );
if( m_media_width < width ) {
CGRect bgLeft = {
{ 0, 0 },
{ imgRect.origin.x, height }
};
CGContextFillRect(cgContext, bgLeft);
CGRect bgRight = {
{ imgRect.origin.x + imgRect.size.width, 0 },
{ width - (imgRect.origin.x + imgRect.size.width), height }
};
CGContextFillRect(cgContext, bgRight);
} else if( m_media_height < height ){
CGRect bgTop = {
{ 0, 0 },
{ width, imgRect.origin.y }
};
CGContextFillRect(cgContext, bgTop);
CGRect bgBottom = {
{ 0, imgRect.origin.y + imgRect.size.height },
{ width, height - (imgRect.origin.y + imgRect.size.height) }
};
CGContextFillRect(cgContext, bgBottom);
}
} else {
CGRect cgBounds = {
{ 0, 0 },
{ width, height }
};
CGContextFillRect(cgContext, cgBounds);
}
CGColorRelease(bgColor);
CGColorSpaceRelease(cSpace);
CGContextRestoreGState(cgContext);
return true; // This is handled
}
bool SVGPaintServerPattern::setup(GraphicsContext*& context, const RenderObject* object, SVGPaintTargetType type, bool isPaintingText) const
{
CGContextRef contextRef = context->platformContext();
// Build pattern tile, passing destination object bounding box
FloatRect targetRect;
if (isPaintingText) {
IntRect textBoundary = const_cast<RenderObject*>(object)->absoluteBoundingBoxRect();
targetRect = object->absoluteTransform().inverse().mapRect(textBoundary);
} else
targetRect = CGContextGetPathBoundingBox(contextRef);
m_ownerElement->buildPattern(targetRect);
if (!tile())
return false;
CGSize cellSize = CGSize(tile()->size());
CGFloat alpha = 1; // canvasStyle->opacity(); //which?
context->save();
// Repesct local pattern transformations
CGContextConcatCTM(contextRef, patternTransform());
// Pattern space seems to start in the lower-left, so we flip the Y here.
CGSize phase = CGSizeMake(patternBoundaries().x(), -patternBoundaries().y());
CGContextSetPatternPhase(contextRef, phase);
RenderStyle* style = object->style();
CGContextSetAlpha(contextRef, style->opacity()); // or do I set the alpha above?
ASSERT(!m_pattern);
CGPatternCallbacks callbacks = {0, patternCallback, NULL};
m_pattern = CGPatternCreate(tile(),
CGRectMake(0, 0, cellSize.width, cellSize.height),
CGContextGetCTM(contextRef),
patternBoundaries().width(),
patternBoundaries().height(),
kCGPatternTilingConstantSpacing, // FIXME: should ask CG guys.
true, // has color
&callbacks);
if (!m_patternSpace)
m_patternSpace = CGColorSpaceCreatePattern(0);
if ((type & ApplyToFillTargetType) && style->svgStyle()->hasFill()) {
CGContextSetFillColorSpace(contextRef, m_patternSpace);
CGContextSetFillPattern(contextRef, m_pattern, &alpha);
if (isPaintingText)
context->setTextDrawingMode(cTextFill);
}
if ((type & ApplyToStrokeTargetType) && style->svgStyle()->hasStroke()) {
CGContextSetStrokeColorSpace(contextRef, m_patternSpace);
CGContextSetStrokePattern(contextRef, m_pattern, &alpha);
applyStrokeStyleToContext(contextRef, style, object);
if (isPaintingText)
context->setTextDrawingMode(cTextStroke);
}
return true;
}
