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);
}
bool MCTileCacheCoreGraphicsCompositor_BeginLayer(void *p_context, const MCRectangle& p_clip, uint32_t p_opacity, uint32_t p_ink)
{
MCTileCacheCoreGraphicsCompositorContext *self;
self = (MCTileCacheCoreGraphicsCompositorContext *)p_context;
CGContextSaveGState(self -> cgcontext);
// MW-2012-09-18: [[ Bug 10202 ]] If the ink is no-op then ensure nothing happens.
if (p_ink == GXnoop)
CGContextClipToRect(self -> cgcontext, CGRectZero);
else
{
CGContextClipToRect(self -> cgcontext, CGRectMake(p_clip . x, self -> viewport_height - (p_clip . y + p_clip . height), p_clip . width, p_clip . height));
CGContextSetAlpha(self -> cgcontext, p_opacity / 255.0);
CGBlendMode t_blend_mode;
switch(p_ink)
{
case GXblendMultiply:
t_blend_mode = kCGBlendModeMultiply;
break;
case GXblendScreen:
t_blend_mode = kCGBlendModeScreen;
break;
case GXblendOverlay:
t_blend_mode = kCGBlendModeOverlay;
break;
case GXblendDarken:
t_blend_mode = kCGBlendModeDarken;
break;
case GXblendLighten:
t_blend_mode = kCGBlendModeLighten;
break;
case GXblendDodge:
t_blend_mode = kCGBlendModeColorDodge;
break;
case GXblendBurn:
t_blend_mode = kCGBlendModeColorBurn;
break;
case GXblendSoftLight:
t_blend_mode = kCGBlendModeSoftLight;
break;
case GXblendHardLight:
t_blend_mode = kCGBlendModeHardLight;
break;
case GXblendDifference:
t_blend_mode = kCGBlendModeDifference;
break;
case GXblendExclusion:
t_blend_mode = kCGBlendModeExclusion;
break;
default:
t_blend_mode = kCGBlendModeNormal;
break;
}
CGContextSetBlendMode(self -> cgcontext, t_blend_mode);
}
return true;
}
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 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 CGDrawContext::setGlobalAlpha (float newAlpha)
{
if (newAlpha == currentState.globalAlpha)
return;
CGContextSetAlpha (cgContext, newAlpha);
CDrawContext::setGlobalAlpha (newAlpha);
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawBitmap (CBitmap* bitmap, const CRect& inRect, const CPoint& inOffset, float alpha)
{
if (bitmap == 0 || alpha == 0.f)
return;
CGBitmap* cgBitmap = bitmap->getPlatformBitmap () ? dynamic_cast<CGBitmap*> (bitmap->getPlatformBitmap ()) : 0;
CGImageRef image = cgBitmap ? cgBitmap->getCGImage () : 0;
if (image)
{
CGContextRef context = beginCGContext (false, true);
if (context)
{
CRect rect (inRect);
rect.makeIntegral ();
CPoint offset (inOffset);
offset.makeIntegral ();
CGContextSetAlpha (context, (CGFloat)alpha*currentState.globalAlpha);
CGRect dest;
dest.origin.x = rect.left - offset.h;
dest.origin.y = -(rect.top) - (bitmap->getHeight () - offset.v);
dest.size.width = cgBitmap->getSize ().x;
dest.size.height = cgBitmap->getSize ().y;
CGRect clipRect2;
clipRect2.origin.x = rect.left;
clipRect2.origin.y = -(rect.top) - rect.height ();
clipRect2.size.width = rect.width ();
clipRect2.size.height = rect.height ();
CGContextClipToRect (context, clipRect2);
CGLayerRef layer = cgBitmap->getCGLayer ();
if (layer == 0)
{
BitmapDrawCountMap::iterator it = bitmapDrawCount.find (cgBitmap);
if (it == bitmapDrawCount.end ())
{
bitmapDrawCount.insert (std::pair<CGBitmap*, int32_t> (cgBitmap, 1));
CGContextDrawImage (context, dest, image);
}
else
{
it->second++;
layer = cgBitmap->createCGLayer (context);
}
}
if (layer)
{
CGContextDrawLayerInRect (context, dest, layer);
}
releaseCGContext (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;
}
DRAW_TEST_F(CGContext, DrawAnImageWithInterpolationQualityAndAlpha, UIKitMimicTest<>) {
auto drawingConfig = DrawingTestConfig::Get();
woc::unique_cf<CFStringRef> testFilename{ _CFStringCreateWithStdString(drawingConfig->GetResourcePath("png1.9.png")) };
woc::unique_cf<CGImageRef> image{ _CGImageCreateFromPNGFile(testFilename.get()) };
ASSERT_NE(image, nullptr);
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
CGContextSetAlpha(context, 0.25);
CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
CGContextDrawImage(context, bounds, image.get());
}
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);
FloatRect indicatorBox = platformCALayer->bounds();\
indicatorBox.setLocation( { 1, 1 } );
indicatorBox.setSize(FloatSize(12 + 10 * strlen(text), 27));
CGContextStateSaver stateSaver(context);
CGContextSetAlpha(context, 0.5f);
CGContextBeginTransparencyLayerWithRect(context, indicatorBox, 0);
if (customBackgroundColor)
CGContextSetFillColorWithColor(context, customBackgroundColor);
else
CGContextSetRGBFillColor(context, 0, 0.5f, 0.25f, 1);
if (platformCALayer->isOpaque())
CGContextFillRect(context, indicatorBox);
else {
Path boundsPath;
boundsPath.moveTo(indicatorBox.maxXMinYCorner());
boundsPath.addLineTo(indicatorBox.maxXMaxYCorner());
boundsPath.addLineTo(indicatorBox.minXMaxYCorner());
const float cornerChunk = 8;
boundsPath.addLineTo(FloatPoint(indicatorBox.x(), indicatorBox.y() + cornerChunk));
boundsPath.addLineTo(FloatPoint(indicatorBox.x() + cornerChunk, indicatorBox.y()));
boundsPath.closeSubpath();
CGContextAddPath(context, boundsPath.platformPath());
CGContextFillPath(context);
}
if (platformCALayer->owner()->isUsingDisplayListDrawing(platformCALayer)) {
CGContextSetRGBStrokeColor(context, 0, 0, 0, 0.65);
CGContextSetLineWidth(context, 2);
CGContextStrokeRect(context, indicatorBox);
}
if (platformCALayer->acceleratesDrawing())
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
else
CGContextSetRGBFillColor(context, 1, 1, 1, 1);
platformCALayer->drawTextAtPoint(context, indicatorBox.x() + 5, indicatorBox.y() + 22, CGSizeMake(1, -1), 22, text, strlen(text));
CGContextEndTransparencyLayer(context);
}
void ImageBuffer::putByteArray(Multiply multiplied, Uint8ClampedArray* source, const IntSize& sourceSize, const IntRect& sourceRect, const IntPoint& destPoint, CoordinateSystem coordinateSystem)
{
if (!context().isAcceleratedContext()) {
IntRect scaledSourceRect = sourceRect;
IntSize scaledSourceSize = sourceSize;
if (coordinateSystem == LogicalCoordinateSystem) {
scaledSourceRect.scale(m_resolutionScale);
scaledSourceSize.scale(m_resolutionScale);
}
m_data.putData(source, scaledSourceSize, scaledSourceRect, destPoint, internalSize(), false, multiplied == Unmultiplied, 1);
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());
// FIXME (149431): Should this ImageBuffer be unconditionally unaccelerated? Making it match the context seems to break putData().
std::unique_ptr<ImageBuffer> sourceCopy = ImageBuffer::create(sourceCopySize, Unaccelerated, 1, ColorSpaceDeviceRGB);
if (!sourceCopy)
return;
sourceCopy->m_data.putData(source, sourceSize, sourceRect, IntPoint(-sourceRect.x(), -sourceRect.y()), sourceCopy->internalSize(), sourceCopy->context().isAcceleratedContext(), multiplied == Unmultiplied, 1);
// Set up context for using drawImage as a direct bit copy
CGContextRef destContext = context().platformContext();
CGContextSaveGState(destContext);
if (coordinateSystem == LogicalCoordinateSystem)
CGContextConcatCTM(destContext, AffineTransform(wkGetUserToBaseCTM(destContext)).inverse());
else
CGContextConcatCTM(destContext, AffineTransform(CGContextGetCTM(destContext)).inverse());
CGContextResetClip(destContext);
CGContextSetInterpolationQuality(destContext, kCGInterpolationNone);
CGContextSetAlpha(destContext, 1.0);
CGContextSetBlendMode(destContext, kCGBlendModeCopy);
CGContextSetShadowWithColor(destContext, CGSizeZero, 0, 0);
// Draw the image in CG coordinate space
FloatSize scaledDestSize = scaleSizeToUserSpace(coordinateSystem == LogicalCoordinateSystem ? logicalSize() : internalSize(), m_data.backingStoreSize, internalSize());
IntPoint destPointInCGCoords(destPoint.x() + sourceRect.x(), scaledDestSize.height() - (destPoint.y() + sourceRect.y()) - sourceRect.height());
IntRect destRectInCGCoords(destPointInCGCoords, sourceCopySize);
CGContextClipToRect(destContext, destRectInCGCoords);
RetainPtr<CGImageRef> sourceCopyImage = sourceCopy->copyNativeImage();
FloatRect backingStoreInDestRect = FloatRect(FloatPoint(destPointInCGCoords.x(), destPointInCGCoords.y() + sourceCopySize.height() - (int)CGImageGetHeight(sourceCopyImage.get())), FloatSize(CGImageGetWidth(sourceCopyImage.get()), CGImageGetHeight(sourceCopyImage.get())));
CGContextDrawImage(destContext, backingStoreInDestRect, sourceCopyImage.get());
CGContextRestoreGState(destContext);
#endif
}
bool SVGPaintServerGradient::setup(GraphicsContext*& context, const RenderObject* object, SVGPaintTargetType type, bool isPaintingText) const
{
m_ownerElement->buildGradient();
// We need a hook to call this when the gradient gets updated, before drawn.
if (!m_shadingCache)
const_cast<SVGPaintServerGradient*>(this)->updateQuartzGradientCache(this);
CGContextRef contextRef = context->platformContext();
RenderStyle* style = object->style();
ASSERT(contextRef);
context->save();
CGContextSetAlpha(contextRef, style->opacity());
if ((type & ApplyToFillTargetType) && style->svgStyle()->hasFill()) {
context->save();
if (isPaintingText)
context->setTextDrawingMode(cTextClip);
}
if ((type & ApplyToStrokeTargetType) && style->svgStyle()->hasStroke()) {
context->save();
applyStrokeStyleToContext(contextRef, style, object);
if (isPaintingText) {
IntRect maskRect = const_cast<RenderObject*>(object)->absoluteBoundingBoxRect();
maskRect = object->absoluteTransform().inverse().mapRect(maskRect);
auto_ptr<ImageBuffer> maskImage = ImageBuffer::create(IntSize(maskRect.width(), maskRect.height()), false);
// FIXME: maskImage could be NULL
GraphicsContext* maskImageContext = maskImage->context();
maskImageContext->save();
maskImageContext->translate(-maskRect.x(), -maskRect.y());
const_cast<RenderObject*>(object)->style()->setColor(Color(255, 255, 255));
maskImageContext->setTextDrawingMode(cTextStroke);
m_imageBuffer = maskImage.release();
m_savedContext = context;
context = maskImageContext;
}
}
return true;
}
DRAW_TEST_F(CGContext, DrawAnImageWithOpacity, UIKitMimicTest<>) {
// Load an Image and draw it into the canvas context
auto drawingConfig = DrawingTestConfig::Get();
woc::unique_cf<CFStringRef> testFilename{ _CFStringCreateWithStdString(drawingConfig->GetResourcePath("png1.9.png")) };
woc::unique_cf<CGImageRef> image{ _CGImageCreateFromPNGFile(testFilename.get()) };
ASSERT_NE(image, nullptr);
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
CGAffineTransform flip = CGAffineTransformMakeScale(1, -1);
CGAffineTransform shift = CGAffineTransformTranslate(flip, 0, bounds.size.height * -1);
CGContextConcatCTM(context, shift);
CGContextSetAlpha(context, 0.7);
CGContextDrawImage(context, bounds, image.get());
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawCGImageRef (CGContextRef context, CGImageRef image, CGLayerRef layer, double bitmapScaleFactor, const CRect& inRect, const CPoint& inOffset, float alpha, CBitmap* bitmap)
{
CRect rect (inRect);
CPoint offset (inOffset);
CGContextSetAlpha (context, (CGFloat)alpha*currentState.globalAlpha);
CGRect dest;
dest.origin.x = static_cast<CGFloat> (rect.left - offset.x);
dest.origin.y = static_cast<CGFloat> (-(rect.top) - (bitmap->getHeight () - offset.y));
dest.size.width = static_cast<CGFloat> (bitmap->getWidth ());
dest.size.height = static_cast<CGFloat> (bitmap->getHeight ());
CGRect clipRect;
clipRect.origin.x = static_cast<CGFloat> (rect.left);
clipRect.origin.y = static_cast<CGFloat> (-(rect.top) - rect.getHeight ());
clipRect.size.width = static_cast<CGFloat> (rect.getWidth ());
clipRect.size.height = static_cast<CGFloat> (rect.getHeight ());
if (bitmapScaleFactor != 1.)
{
CGContextConcatCTM (context, CGAffineTransformMakeScale (static_cast<CGFloat> (1./bitmapScaleFactor), static_cast<CGFloat> (1./bitmapScaleFactor)));
CGAffineTransform transform = CGAffineTransformMakeScale (static_cast<CGFloat> (bitmapScaleFactor), static_cast<CGFloat> (bitmapScaleFactor));
clipRect.origin = CGPointApplyAffineTransform (clipRect.origin, transform);
clipRect.size = CGSizeApplyAffineTransform (clipRect.size, transform);
dest.origin = CGPointApplyAffineTransform (dest.origin, transform);
dest.size = CGSizeApplyAffineTransform (dest.size, transform);
}
dest = pixelAlligned (dest);
clipRect = pixelAlligned (clipRect);
CGContextClipToRect (context, clipRect);
if (layer)
{
CGContextDrawLayerInRect (context, dest, layer);
}
else
{
CGContextDrawImage (context, dest, image);
}
}
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;
}
}
DISABLED_DRAW_TEST_F(CGImageDrawing, TiledImageMultiColorFlowerScaledAlpha2, UIKitMimicTest<>) {
CGRect rect = { { 0, 0 }, { 256, 256 } };
CGContextSetAlpha(GetDrawingContext(), 0.24);
_drawTiledImage(GetDrawingContext(), rect, "tiledImageMultiColorFlower.png");
}
void GraphicsContext::drawLineForMisspellingOrBadGrammar(const IntPoint& point, int width, bool grammar)
{
if (paintingDisabled())
return;
// These are the same for misspelling or bad grammar
const int patternHeight = 3; // 3 rows
ASSERT(cMisspellingLineThickness == patternHeight);
const int patternWidth = 4; // 4 pixels
ASSERT(patternWidth == cMisspellingLinePatternWidth);
// Make sure to draw only complete dots.
// NOTE: Code here used to shift the underline to the left and increase the width
// to make sure everything gets underlined, but that results in drawing out of
// bounds (e.g. when at the edge of a view) and could make it appear that the
// space between adjacent misspelled words was underlined.
// allow slightly more considering that the pattern ends with a transparent pixel
int widthMod = width % patternWidth;
if (patternWidth - widthMod > cMisspellingLinePatternGapWidth)
width -= widthMod;
// Draw the underline
CGContextRef context = platformContext();
CGContextSaveGState(context);
const Color& patternColor = grammar ? grammarPatternColor() : spellingPatternColor();
setCGStrokeColor(context, patternColor);
wkSetPatternPhaseInUserSpace(context, point);
CGContextSetBlendMode(context, kCGBlendModeNormal);
// 3 rows, each offset by half a pixel for blending purposes
const CGPoint upperPoints [] = {{point.x(), point.y() + patternHeight - 2.5 }, {point.x() + width, point.y() + patternHeight - 2.5}};
const CGPoint middlePoints [] = {{point.x(), point.y() + patternHeight - 1.5 }, {point.x() + width, point.y() + patternHeight - 1.5}};
const CGPoint lowerPoints [] = {{point.x(), point.y() + patternHeight - 0.5 }, {point.x() + width, point.y() + patternHeight - 0.5 }};
// Dash lengths for the top and bottom of the error underline are the same.
// These are magic.
static const float edge_dash_lengths[] = {2.0f, 2.0f};
static const float middle_dash_lengths[] = {2.76f, 1.24f};
static const float edge_offset = -(edge_dash_lengths[1] - 1.0f) / 2.0f;
static const float middle_offset = -(middle_dash_lengths[1] - 1.0f) / 2.0f;
// Line opacities. Once again, these are magic.
const float upperOpacity = 0.33f;
const float middleOpacity = 0.75f;
const float lowerOpacity = 0.88f;
//Top line
CGContextSetLineDash(context, edge_offset, edge_dash_lengths,
sizeof(edge_dash_lengths) / sizeof(edge_dash_lengths[0]));
CGContextSetAlpha(context, upperOpacity);
CGContextStrokeLineSegments(context, upperPoints, 2);
// Middle line
CGContextSetLineDash(context, middle_offset, middle_dash_lengths,
sizeof(middle_dash_lengths) / sizeof(middle_dash_lengths[0]));
CGContextSetAlpha(context, middleOpacity);
CGContextStrokeLineSegments(context, middlePoints, 2);
// Bottom line
CGContextSetLineDash(context, edge_offset, edge_dash_lengths,
sizeof(edge_dash_lengths) / sizeof(edge_dash_lengths[0]));
CGContextSetAlpha(context, lowerOpacity);
CGContextStrokeLineSegments(context, lowerPoints, 2);
CGContextRestoreGState(context);
}
static void _GraphicsScreen_cellArrayOrImage (GraphicsScreen me, double **z_float, double_rgbt **z_rgbt, unsigned char **z_byte,
long ix1, long ix2, long x1DC, long x2DC,
long iy1, long iy2, long y1DC, long y2DC,
double minimum, double maximum,
long clipx1, long clipx2, long clipy1, long clipy2, int interpolate)
{
/*long t=clock();*/
long nx = ix2 - ix1 + 1; /* The number of cells along the horizontal axis. */
long ny = iy2 - iy1 + 1; /* The number of cells along the vertical axis. */
double dx = (double) (x2DC - x1DC) / (double) nx; /* Horizontal pixels per cell. Positive. */
double dy = (double) (y2DC - y1DC) / (double) ny; /* Vertical pixels per cell. Negative. */
double scale = 255.0 / (maximum - minimum), offset = 255.0 + minimum * scale;
if (x2DC <= x1DC || y1DC <= y2DC) return;
trace ("scale %f", scale);
/* Clip by the intersection of the world window and the outline of the cells. */
//Melder_casual ("clipy1 %ld clipy2 %ld", clipy1, clipy2);
if (clipx1 < x1DC) clipx1 = x1DC;
if (clipx2 > x2DC) clipx2 = x2DC;
if (clipy1 > y1DC) clipy1 = y1DC;
if (clipy2 < y2DC) clipy2 = y2DC;
/*
* The first decision is whether we are going to use the standard rectangle drawing
* (cellArray only), or whether we are going to write into a bitmap.
* The standard drawing is best for small numbers of cells,
* provided that some cells are larger than a pixel.
*/
if (! interpolate && nx * ny < 3000 && (dx > 1.0 || dy < -1.0)) {
try {
/*unsigned int cellWidth = (unsigned int) dx + 1;*/
unsigned int cellHeight = (unsigned int) (- (int) dy) + 1;
long ix, iy;
#if cairo
cairo_pattern_t *grey [256];
for (int igrey = 0; igrey < sizeof (grey) / sizeof (*grey); igrey ++) {
double v = igrey / ((double) (sizeof (grey) / sizeof (*grey)) - 1.0);
grey [igrey] = cairo_pattern_create_rgb (v, v, v);
}
#elif win
static HBRUSH greyBrush [256];
RECT rect;
if (! greyBrush [0])
for (int igrey = 0; igrey <= 255; igrey ++)
greyBrush [igrey] = CreateSolidBrush (RGB (igrey, igrey, igrey)); // once
#elif mac
GraphicsQuartz_initDraw (me);
CGContextSetAlpha (my d_macGraphicsContext, 1.0);
CGContextSetBlendMode (my d_macGraphicsContext, kCGBlendModeNormal);
#endif
autoNUMvector <long> lefts (ix1, ix2 + 1);
for (ix = ix1; ix <= ix2 + 1; ix ++)
lefts [ix] = x1DC + (long) ((ix - ix1) * dx);
for (iy = iy1; iy <= iy2; iy ++) {
long bottom = y1DC + (long) ((iy - iy1) * dy), top = bottom - cellHeight;
if (top > clipy1 || bottom < clipy2) continue;
if (top < clipy2) top = clipy2;
if (bottom > clipy1) bottom = clipy1;
#if win
rect. bottom = bottom; rect. top = top;
#endif
for (ix = ix1; ix <= ix2; ix ++) {
long left = lefts [ix], right = lefts [ix + 1];
if (right < clipx1 || left > clipx2) continue;
if (left < clipx1) left = clipx1;
if (right > clipx2) right = clipx2;
if (z_rgbt) {
#if cairo
// NYI
#elif win
// NYI
#elif mac
double red = z_rgbt [iy] [ix]. red;
double green = z_rgbt [iy] [ix]. green;
double blue = z_rgbt [iy] [ix]. blue;
double transparency = z_rgbt [iy] [ix]. transparency;
red = ( red <= 0.0 ? 0.0 : red >= 1.0 ? 1.0 : red );
green = ( green <= 0.0 ? 0.0 : green >= 1.0 ? 1.0 : green );
blue = ( blue <= 0.0 ? 0.0 : blue >= 1.0 ? 1.0 : blue );
CGContextSetRGBFillColor (my d_macGraphicsContext, red, green, blue, 1.0 - transparency);
CGContextFillRect (my d_macGraphicsContext, CGRectMake (left, top, right - left, bottom - top));
#endif
} else {
#if cairo
long value = offset - scale * ( z_float ? z_float [iy] [ix] : z_byte [iy] [ix] );
cairo_set_source (my d_cairoGraphicsContext, grey [value <= 0 ? 0 : value >= sizeof (grey) / sizeof (*grey) ? sizeof (grey) / sizeof (*grey) : value]);
cairo_rectangle (my d_cairoGraphicsContext, left, top, right - left, bottom - top);
cairo_fill (my d_cairoGraphicsContext);
#elif win
long value = offset - scale * ( z_float ? z_float [iy] [ix] : z_byte [iy] [ix] );
rect. left = left; rect. right = right;
FillRect (my d_gdiGraphicsContext, & rect, greyBrush [value <= 0 ? 0 : value >= 255 ? 255 : value]);
#elif mac
double value = offset - scale * ( z_float ? z_float [iy] [ix] : z_byte [iy] [ix] );
double igrey = ( value <= 0 ? 0 : value >= 255 ? 255 : value ) / 255.0;
CGContextSetRGBFillColor (my d_macGraphicsContext, igrey, igrey, igrey, 1.0);
CGContextFillRect (my d_macGraphicsContext, CGRectMake (left, top, right - left, bottom - top));
#endif
}
}
}
#if cairo
for (int igrey = 0; igrey < sizeof (grey) / sizeof (*grey); igrey ++)
cairo_pattern_destroy (grey [igrey]);
#elif mac
CGContextSetRGBFillColor (my d_macGraphicsContext, 0.0, 0.0, 0.0, 1.0);
GraphicsQuartz_exitDraw (me);
#endif
} catch (MelderError) { }
} else {
long xDC, yDC;
long undersampling = 1;
/*
* Prepare for off-screen bitmap drawing.
*/
#if cairo
long arrayWidth = clipx2 - clipx1;
long arrayHeight = clipy1 - clipy2;
trace ("arrayWidth %f, arrayHeight %f", (double) arrayWidth, (double) arrayHeight);
cairo_surface_t *sfc = cairo_image_surface_create (CAIRO_FORMAT_RGB24, arrayWidth, arrayHeight);
unsigned char *bits = cairo_image_surface_get_data (sfc);
int scanLineLength = cairo_image_surface_get_stride (sfc);
unsigned char grey [256];
trace ("image surface address %p, bits address %p, scanLineLength %d, numberOfGreys %d", sfc, bits, scanLineLength, sizeof(grey)/sizeof(*grey));
for (int igrey = 0; igrey < sizeof (grey) / sizeof (*grey); igrey++)
grey [igrey] = 255 - (unsigned char) (igrey * 255.0 / (sizeof (grey) / sizeof (*grey) - 1));
#elif win
long bitmapWidth = clipx2 - clipx1, bitmapHeight = clipy1 - clipy2;
int igrey;
/*
* Create a device-independent bitmap, 32 bits deep.
*/
struct { BITMAPINFOHEADER header; } bitmapInfo;
long scanLineLength = bitmapWidth * 4; // for 24 bits: (bitmapWidth * 3 + 3) & ~3L;
HBITMAP bitmap;
unsigned char *bits; // a pointer to memory allocated by VirtualAlloc or by CreateDIBSection ()
bitmapInfo. header.biSize = sizeof (BITMAPINFOHEADER);
bitmapInfo. header.biWidth = bitmapWidth; // scanLineLength;
bitmapInfo. header.biHeight = bitmapHeight;
bitmapInfo. header.biPlanes = 1;
bitmapInfo. header.biBitCount = 32;
bitmapInfo. header.biCompression = 0;
bitmapInfo. header.biSizeImage = 0;
bitmapInfo. header.biXPelsPerMeter = 0;
bitmapInfo. header.biYPelsPerMeter = 0;
bitmapInfo. header.biClrUsed = 0;
bitmapInfo. header.biClrImportant = 0;
bitmap = CreateDIBSection (my d_gdiGraphicsContext /* ignored */, (CONST BITMAPINFO *) & bitmapInfo,
DIB_RGB_COLORS, (VOID **) & bits, NULL, 0);
#elif mac
long bytesPerRow = (clipx2 - clipx1) * 4;
Melder_assert (bytesPerRow > 0);
long numberOfRows = clipy1 - clipy2;
Melder_assert (numberOfRows > 0);
unsigned char *imageData = Melder_malloc_f (unsigned char, bytesPerRow * numberOfRows);
#endif
/*
* Draw into the bitmap.
*/
#if cairo
#define ROW_START_ADDRESS (bits + (clipy1 - 1 - yDC) * scanLineLength)
#define PUT_PIXEL \
if (1) { \
unsigned char kar = value <= 0 ? 0 : value >= 255 ? 255 : (int) value; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = 0; \
}
#elif win
#define ROW_START_ADDRESS (bits + (clipy1 - 1 - yDC) * scanLineLength)
#define PUT_PIXEL \
if (1) { \
unsigned char kar = value <= 0 ? 0 : value >= 255 ? 255 : (int) value; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = 0; \
}
#elif mac
#define ROW_START_ADDRESS (imageData + (clipy1 - 1 - yDC) * bytesPerRow)
#define PUT_PIXEL \
if (my colourScale == kGraphics_colourScale_GREY) { \
unsigned char kar = value <= 0 ? 0 : value >= 255 ? 255 : (int) value; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = kar; \
*pixelAddress ++ = 0; \
} else if (my colourScale == kGraphics_colourScale_BLUE_TO_RED) { \
if (value < 0.0) { \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 63; \
*pixelAddress ++ = 0; \
} else if (value < 64.0) { \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
*pixelAddress ++ = (int) (value * 3 + 63.999); \
*pixelAddress ++ = 0; \
} else if (value < 128.0) { \
*pixelAddress ++ = (int) (value * 4 - 256.0); \
*pixelAddress ++ = (int) (value * 4 - 256.0); \
*pixelAddress ++ = 255; \
*pixelAddress ++ = 0; \
} else if (value < 192.0) { \
*pixelAddress ++ = 255; \
*pixelAddress ++ = (int) ((256.0 - value) * 4 - 256.0); \
*pixelAddress ++ = (int) ((256.0 - value) * 4 - 256.0); \
*pixelAddress ++ = 0; \
} else if (value < 256.0) { \
*pixelAddress ++ = (int) ((256.0 - value) * 3 + 63.999); \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
} else { \
*pixelAddress ++ = 63; \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
*pixelAddress ++ = 0; \
} \
}
#else
#define ROW_START_ADDRESS NULL
#define PUT_PIXEL
#endif
if (interpolate) {
try {
autoNUMvector <long> ileft (clipx1, clipx2);
autoNUMvector <long> iright (clipx1, clipx2);
autoNUMvector <double> rightWeight (clipx1, clipx2);
autoNUMvector <double> leftWeight (clipx1, clipx2);
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double ix_real = ix1 - 0.5 + ((double) nx * (xDC - x1DC)) / (x2DC - x1DC);
ileft [xDC] = floor (ix_real), iright [xDC] = ileft [xDC] + 1;
rightWeight [xDC] = ix_real - ileft [xDC], leftWeight [xDC] = 1.0 - rightWeight [xDC];
if (ileft [xDC] < ix1) ileft [xDC] = ix1;
if (iright [xDC] > ix2) iright [xDC] = ix2;
}
for (yDC = clipy2; yDC < clipy1; yDC += undersampling) {
double iy_real = iy2 + 0.5 - ((double) ny * (yDC - y2DC)) / (y1DC - y2DC);
long itop = ceil (iy_real), ibottom = itop - 1;
double bottomWeight = itop - iy_real, topWeight = 1.0 - bottomWeight;
unsigned char *pixelAddress = ROW_START_ADDRESS;
if (itop > iy2) itop = iy2;
if (ibottom < iy1) ibottom = iy1;
if (z_float) {
double *ztop = z_float [itop], *zbottom = z_float [ibottom];
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double interpol =
rightWeight [xDC] *
(topWeight * ztop [iright [xDC]] + bottomWeight * zbottom [iright [xDC]]) +
leftWeight [xDC] *
(topWeight * ztop [ileft [xDC]] + bottomWeight * zbottom [ileft [xDC]]);
double value = offset - scale * interpol;
PUT_PIXEL
}
} else if (z_rgbt) {
double_rgbt *ztop = z_rgbt [itop], *zbottom = z_rgbt [ibottom];
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double red =
rightWeight [xDC] * (topWeight * ztop [iright [xDC]]. red + bottomWeight * zbottom [iright [xDC]]. red) +
leftWeight [xDC] * (topWeight * ztop [ileft [xDC]]. red + bottomWeight * zbottom [ileft [xDC]]. red);
double green =
rightWeight [xDC] * (topWeight * ztop [iright [xDC]]. green + bottomWeight * zbottom [iright [xDC]]. green) +
leftWeight [xDC] * (topWeight * ztop [ileft [xDC]]. green + bottomWeight * zbottom [ileft [xDC]]. green);
double blue =
rightWeight [xDC] * (topWeight * ztop [iright [xDC]]. blue + bottomWeight * zbottom [iright [xDC]]. blue) +
leftWeight [xDC] * (topWeight * ztop [ileft [xDC]]. blue + bottomWeight * zbottom [ileft [xDC]]. blue);
double transparency =
rightWeight [xDC] * (topWeight * ztop [iright [xDC]]. transparency + bottomWeight * zbottom [iright [xDC]]. transparency) +
leftWeight [xDC] * (topWeight * ztop [ileft [xDC]]. transparency + bottomWeight * zbottom [ileft [xDC]]. transparency);
if (red < 0.0) red = 0.0; else if (red > 1.0) red = 1.0;
if (green < 0.0) green = 0.0; else if (green > 1.0) green = 1.0;
if (blue < 0.0) blue = 0.0; else if (blue > 1.0) blue = 1.0;
if (transparency < 0.0) transparency = 0.0; else if (transparency > 1.0) transparency = 1.0;
#if win
*pixelAddress ++ = blue * 255.0;
*pixelAddress ++ = green * 255.0;
*pixelAddress ++ = red * 255.0;
*pixelAddress ++ = 0;
#elif mac
*pixelAddress ++ = red * 255.0;
*pixelAddress ++ = green * 255.0;
*pixelAddress ++ = blue * 255.0;
*pixelAddress ++ = transparency * 255.0;
#elif cairo
*pixelAddress ++ = blue * 255.0;
*pixelAddress ++ = green * 255.0;
*pixelAddress ++ = red * 255.0;
*pixelAddress ++ = transparency * 255.0;
#endif
}
} else {
unsigned char *ztop = z_byte [itop], *zbottom = z_byte [ibottom];
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double interpol =
rightWeight [xDC] *
(topWeight * ztop [iright [xDC]] + bottomWeight * zbottom [iright [xDC]]) +
leftWeight [xDC] *
(topWeight * ztop [ileft [xDC]] + bottomWeight * zbottom [ileft [xDC]]);
double value = offset - scale * interpol;
PUT_PIXEL
}
}
}
} catch (MelderError) { Melder_clearError (); }
} else {
try {
autoNUMvector <long> ix (clipx1, clipx2);
for (xDC = clipx1; xDC < clipx2; xDC += undersampling)
ix [xDC] = floor (ix1 + (nx * (xDC - x1DC)) / (x2DC - x1DC));
for (yDC = clipy2; yDC < clipy1; yDC += undersampling) {
long iy = ceil (iy2 - (ny * (yDC - y2DC)) / (y1DC - y2DC));
unsigned char *pixelAddress = ROW_START_ADDRESS;
Melder_assert (iy >= iy1 && iy <= iy2);
if (z_float) {
double *ziy = z_float [iy];
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double value = offset - scale * ziy [ix [xDC]];
PUT_PIXEL
}
} else {
unsigned char *ziy = z_byte [iy];
for (xDC = clipx1; xDC < clipx2; xDC += undersampling) {
double value = offset - scale * ziy [ix [xDC]];
PUT_PIXEL
}
}
}
} catch (MelderError) { Melder_clearError (); }
}
/*
* Copy the bitmap to the screen.
*/
#if cairo
cairo_matrix_t clip_trans;
cairo_matrix_init_identity (& clip_trans);
cairo_matrix_scale (& clip_trans, 1, -1); // we painted in the reverse y-direction
cairo_matrix_translate (& clip_trans, - clipx1, - clipy1);
cairo_pattern_t *bitmap_pattern = cairo_pattern_create_for_surface (sfc);
trace ("bitmap pattern %p", bitmap_pattern);
if (cairo_status_t status = cairo_pattern_status (bitmap_pattern)) {
Melder_casual ("bitmap pattern status: %s", cairo_status_to_string (status));
} else {
cairo_pattern_set_matrix (bitmap_pattern, & clip_trans);
cairo_save (my d_cairoGraphicsContext);
cairo_set_source (my d_cairoGraphicsContext, bitmap_pattern);
cairo_paint (my d_cairoGraphicsContext);
cairo_restore (my d_cairoGraphicsContext);
}
cairo_pattern_destroy (bitmap_pattern);
#elif win
SetDIBitsToDevice (my d_gdiGraphicsContext, clipx1, clipy2, bitmapWidth, bitmapHeight, 0, 0, 0, bitmapHeight,
bits, (CONST BITMAPINFO *) & bitmapInfo, DIB_RGB_COLORS);
//StretchDIBits (my d_gdiGraphicsContext, clipx1, clipy2, bitmapWidth, bitmapHeight, 0, 0, 0, bitmapHeight,
// bits, (CONST BITMAPINFO *) & bitmapInfo, DIB_RGB_COLORS, SRCCOPY);
#elif mac
CGImageRef image;
static CGColorSpaceRef colourSpace = NULL;
if (colourSpace == NULL) {
colourSpace = CGColorSpaceCreateWithName (kCGColorSpaceGenericRGB); // used to be kCGColorSpaceUserRGB
Melder_assert (colourSpace != NULL);
}
if (1) {
CGDataProviderRef dataProvider = CGDataProviderCreateWithData (NULL,
imageData,
bytesPerRow * numberOfRows,
_mac_releaseDataCallback // we need this because we cannot release the image data immediately after drawing,
// because in PDF files the imageData has to stay available through EndPage
);
Melder_assert (dataProvider != NULL);
image = CGImageCreate (clipx2 - clipx1, numberOfRows,
8, 32, bytesPerRow, colourSpace, kCGImageAlphaNone, dataProvider, NULL, false, kCGRenderingIntentDefault);
CGDataProviderRelease (dataProvider);
} else if (0) {
Melder_assert (CGBitmapContextCreate != NULL);
CGContextRef bitmaptest = CGBitmapContextCreate (imageData, 100, 100,
8, 800, colourSpace, 0);
Melder_assert (bitmaptest != NULL);
CGContextRef bitmap = CGBitmapContextCreate (NULL/*imageData*/, clipx2 - clipx1, numberOfRows,
8, bytesPerRow, colourSpace, kCGImageAlphaLast);
Melder_assert (bitmap != NULL);
image = CGBitmapContextCreateImage (bitmap);
// release bitmap?
}
Melder_assert (image != NULL);
GraphicsQuartz_initDraw (me);
CGContextDrawImage (my d_macGraphicsContext, CGRectMake (clipx1, clipy2, clipx2 - clipx1, clipy1 - clipy2), image);
GraphicsQuartz_exitDraw (me);
//CGColorSpaceRelease (colourSpace);
CGImageRelease (image);
#endif
/*
* Clean up.
*/
#if cairo
cairo_surface_destroy (sfc);
#elif win
DeleteBitmap (bitmap);
#endif
}
static void quartzPrepareFill (GraphicsScreen me) {
CGContextSetAlpha (my d_macGraphicsContext, 1.0);
CGContextSetBlendMode (my d_macGraphicsContext, kCGBlendModeNormal);
CGContextSetRGBFillColor (my d_macGraphicsContext, my d_macColour.red / 65536.0, my d_macColour.green / 65536.0, my d_macColour.blue / 65536.0, 1.0);
}
static cairo_int_status_t
_cairo_quartz_init_glyph_surface (cairo_quartz_scaled_font_t *font,
cairo_scaled_glyph_t *scaled_glyph)
{
cairo_int_status_t status = CAIRO_STATUS_SUCCESS;
cairo_quartz_font_face_t *font_face = _cairo_quartz_scaled_to_face(font);
cairo_image_surface_t *surface = NULL;
CGGlyph glyph = _cairo_quartz_scaled_glyph_index (scaled_glyph);
int advance;
CGRect bbox;
double width, height;
double emscale = CGFontGetUnitsPerEmPtr (font_face->cgFont);
CGContextRef cgContext = NULL;
CGAffineTransform textMatrix;
CGRect glyphRect, glyphRectInt;
CGPoint glyphOrigin;
//fprintf (stderr, "scaled_glyph: %p surface: %p\n", scaled_glyph, scaled_glyph->surface);
/* Create blank 2x2 image if we don't have this character.
* Maybe we should draw a better missing-glyph slug or something,
* but this is ok for now.
*/
if (glyph == INVALID_GLYPH) {
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, 2, 2);
status = cairo_surface_status ((cairo_surface_t *) surface);
if (status)
return status;
_cairo_scaled_glyph_set_surface (scaled_glyph,
&font->base,
surface);
return CAIRO_STATUS_SUCCESS;
}
if (!CGFontGetGlyphAdvancesPtr (font_face->cgFont, &glyph, 1, &advance) ||
!CGFontGetGlyphBBoxesPtr (font_face->cgFont, &glyph, 1, &bbox))
{
return CAIRO_INT_STATUS_UNSUPPORTED;
}
/* scale(1,-1) * font->base.scale * scale(1,-1) */
textMatrix = CGAffineTransformMake (font->base.scale.xx,
-font->base.scale.yx,
-font->base.scale.xy,
font->base.scale.yy,
0, -0);
glyphRect = CGRectMake (bbox.origin.x / emscale,
bbox.origin.y / emscale,
bbox.size.width / emscale,
bbox.size.height / emscale);
glyphRect = CGRectApplyAffineTransform (glyphRect, textMatrix);
/* Round the rectangle outwards, so that we don't have to deal
* with non-integer-pixel origins or dimensions.
*/
glyphRectInt = CGRectIntegral (glyphRect);
#if 0
fprintf (stderr, "glyphRect[o]: %f %f %f %f\n",
glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
fprintf (stderr, "glyphRectInt: %f %f %f %f\n",
glyphRectInt.origin.x, glyphRectInt.origin.y, glyphRectInt.size.width, glyphRectInt.size.height);
#endif
glyphOrigin = glyphRectInt.origin;
//textMatrix = CGAffineTransformConcat (textMatrix, CGAffineTransformInvert (ctm));
width = glyphRectInt.size.width;
height = glyphRectInt.size.height;
//fprintf (stderr, "glyphRect[n]: %f %f %f %f\n", glyphRect.origin.x, glyphRect.origin.y, glyphRect.size.width, glyphRect.size.height);
surface = (cairo_image_surface_t*) cairo_image_surface_create (CAIRO_FORMAT_A8, width, height);
if (surface->base.status)
return surface->base.status;
if (surface->width != 0 && surface->height != 0) {
cgContext = CGBitmapContextCreate (surface->data,
surface->width,
surface->height,
8,
surface->stride,
NULL,
kCGImageAlphaOnly);
if (cgContext == NULL) {
cairo_surface_destroy (&surface->base);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
CGContextSetFont (cgContext, font_face->cgFont);
CGContextSetFontSize (cgContext, 1.0);
CGContextSetTextMatrix (cgContext, textMatrix);
switch (font->base.options.antialias) {
case CAIRO_ANTIALIAS_SUBPIXEL:
case CAIRO_ANTIALIAS_BEST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, TRUE);
if (CGContextSetAllowsFontSmoothingPtr &&
!CGContextGetAllowsFontSmoothingPtr (cgContext))
CGContextSetAllowsFontSmoothingPtr (cgContext, TRUE);
break;
case CAIRO_ANTIALIAS_NONE:
CGContextSetShouldAntialias (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_GRAY:
case CAIRO_ANTIALIAS_GOOD:
case CAIRO_ANTIALIAS_FAST:
CGContextSetShouldAntialias (cgContext, TRUE);
CGContextSetShouldSmoothFonts (cgContext, FALSE);
break;
case CAIRO_ANTIALIAS_DEFAULT:
default:
/* Don't do anything */
break;
}
CGContextSetAlpha (cgContext, 1.0);
CGContextShowGlyphsAtPoint (cgContext, - glyphOrigin.x, - glyphOrigin.y, &glyph, 1);
CGContextRelease (cgContext);
}
cairo_surface_set_device_offset (&surface->base,
- glyphOrigin.x,
height + glyphOrigin.y);
_cairo_scaled_glyph_set_surface (scaled_glyph, &font->base, surface);
return status;
}
DISABLED_DRAW_TEST_F(CGImageDrawing, TiledImageCustomScaledAlpha, UIKitMimicTest<>) {
CGRect rect = { { 0, 0 }, { 128, 128 } };
CGContextSetAlpha(GetDrawingContext(), 0.88);
_drawTiledImage(GetDrawingContext(), rect, "tiledImageCircleMe.png");
}
void GraphicsContext::setAlpha(float alpha)
{
if (paintingDisabled())
return;
CGContextSetAlpha(platformContext(), alpha);
}
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;
}
DISABLED_DRAW_TEST_F(CGImageDrawing, TiledImageFlowerScaledAlpha3, UIKitMimicTest<>) {
CGRect rect = { { 0, 0 }, { 300, 513 } };
CGContextSetAlpha(GetDrawingContext(), 0.66);
_drawTiledImage(GetDrawingContext(), rect, "tiledImageFlower.png");
}
