DRAW_TEST_F(CGImageDrawing, DrawAContextIntoAnImage, UIKitMimicTest<>) {
// This test will create a bitmap context, draw some entity into the context, then create a image out of the bitmap context.
// Thereafter it will draw the image into the Canvas context
static woc::unique_cf<CGColorSpaceRef> rgbColorSpace(CGColorSpaceCreateDeviceRGB());
// Create a bitmap context to draw the Image into
woc::unique_cf<CGContextRef> contextImage(CGBitmapContextCreate(
nullptr, 10, 10, 8, 4 * 10 /* bytesPerRow = bytesPerPixel*width*/, rgbColorSpace.get(), kCGImageAlphaPremultipliedFirst));
ASSERT_NE(contextImage, nullptr);
CGContextSetRGBFillColor(contextImage.get(), 1.0, 0.0, 0.0, 1.0);
CGContextFillRect(contextImage.get(), { 0, 0, 10, 10 });
// Create the image out of the bitmap context
woc::unique_cf<CGImageRef> image(CGBitmapContextCreateImage(contextImage.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);
// draw the image
CGContextDrawImage(context, bounds, image.get());
}
DRAW_TEST_P(CGContextFillMode, OverlappedEllipses) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
bounds = CGRectInset(bounds, 16.f, 16.f);
CGFloat width = bounds.size.width;
CGFloat height = bounds.size.height;
CGFloat xstart = bounds.origin.x;
CGFloat ystart = bounds.origin.y;
CGPathDrawingMode fillMode = GetParam();
CGMutablePathRef leftCircles = CGPathCreateMutable();
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .4 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .2 * height, M_PI, 0, true);
CGPathMoveToPoint(leftCircles, NULL, xstart + .25 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(leftCircles, NULL, xstart + .25 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(leftCircles);
CGMutablePathRef rightCircles = CGPathCreateMutable();
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .4 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .4 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .3 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .3 * height, M_PI, 0, true);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .2 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, 0, M_PI, false);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .2 * height, M_PI, 0, false);
CGPathMoveToPoint(rightCircles, NULL, xstart + .75 * width + .1 * height, ystart + .5 * height);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, 0, M_PI, true);
CGPathAddArc(rightCircles, NULL, xstart + .75 * width, ystart + .5 * height, .1 * height, M_PI, 0, true);
CGPathCloseSubpath(rightCircles);
CGContextAddPath(context, leftCircles);
CGContextAddPath(context, rightCircles);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextSetRGBStrokeColor(context, 1, 0, 0, 1);
CGContextDrawPath(context, fillMode);
CGPathRelease(leftCircles);
CGPathRelease(rightCircles);
}
DRAW_TEST_F(CGContextFlush, FillFlushMultipleDrawingCounters, WhiteBackgroundTest<>) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
static int sDrawCount = 5;
for (int i = 0; i < sDrawCount; ++i) {
_CGContextPushBeginDraw(context);
}
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
CGContextFillRect(context, bounds);
for (int i = 0; i < sDrawCount; ++i) {
// Multiple flushes should work.
CGContextFlush(context);
}
// Add some extra drawings
CGContextClearRect(context, bounds);
// We should still have red & clear should not of been executed.
unsigned char* dataPtr = static_cast<unsigned char*>(CGBitmapContextGetData(context));
ASSERT_NE(dataPtr, nullptr);
// Validate only the red fill rect is executed.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0xff);
EXPECT_EQ(dataPtr[3], 0xff);
for (int i = 0; i < 3; ++i) {
// Multiple flushes should work.
CGContextFlush(context);
}
// validate clear
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0x00);
CGContextSetRGBStrokeColor(context, 0, 1, 0, 1);
CGContextStrokeRect(context, CGRectMake(100, 100, 200, 300));
// Still should be clear.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0x00);
for (int i = 0; i < sDrawCount; ++i) {
_CGContextPopEndDraw(context);
}
}
DRAW_TEST_F(CGContextFlush, FillFlush, WhiteBackgroundTest<>) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
_CGContextPushBeginDraw(context);
CGContextSetRGBFillColor(context, 1, 0, 0, 1);
CGContextFillRect(context, bounds);
// Flush the red fill rect
CGContextFlush(context);
CGContextSetRGBFillColor(context, 0, 0, 1, 1);
CGContextFillRect(context, CGRectMake(0, 0, 300, 300));
// We should still have red & blue rectangle should not show up.
unsigned char* dataPtr = static_cast<unsigned char*>(CGBitmapContextGetData(context));
ASSERT_NE(dataPtr, nullptr);
// Validate only the red fill rect is executed.
EXPECT_EQ(dataPtr[0], 0x00);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0xff);
EXPECT_EQ(dataPtr[3], 0xff);
CGContextFlush(context);
// We should now see the blue fill rect
EXPECT_EQ(dataPtr[0], 0xff);
EXPECT_EQ(dataPtr[1], 0x00);
EXPECT_EQ(dataPtr[2], 0x00);
EXPECT_EQ(dataPtr[3], 0xff);
// Add some extra drawings
CGContextClearRect(context, CGRectMake(100, 100, 200, 300));
CGPoint center = _CGRectGetCenter(bounds);
CGMutablePathRef concentricCirclesPath = CGPathCreateMutable();
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 50, 50 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 100, 100 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 150, 150 }, center));
CGPathAddEllipseInRect(concentricCirclesPath, nullptr, _CGRectCenteredOnPoint({ 200, 200 }, center));
CGContextSetRGBFillColor(context, 1.0, 0.0, 0.0, 0.5);
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextAddPath(context, concentricCirclesPath);
CGContextDrawPath(context, kCGPathFillStroke);
CGPathRelease(concentricCirclesPath);
_CGContextPopEndDraw(context);
}
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());
}
DISABLED_DRAW_TEST_F(CGContext, Shadow, WhiteBackgroundTest) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextSetLineWidth(context, 5);
CGContextSetShadow(context, CGSize{ 10.f, 10.f }, 1.0);
CGPoint center = _CGRectGetCenter(bounds);
CGRect rect = _CGRectCenteredOnPoint({ 150, 150 }, center);
CGContextStrokeRect(context, rect);
}
DRAW_TEST_F(CGImageDrawing, DrawAnImage, UIKitMimicTest<>) {
// Load an Image and draw it into the canvas context
auto drawingConfig = DrawingTestConfig::Get();
woc::unique_cf<CFStringRef> testFilename{ _CFStringCreateWithStdString(drawingConfig->GetResourcePath("jpg1.jpg")) };
woc::unique_cf<CGImageRef> image{ _CGImageCreateFromJPEGFile(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);
CGContextDrawImage(context, bounds, image.get());
}
DISABLED_DRAW_TEST_F(CGContext, ShadowWithRotatedCTM, WhiteBackgroundTest) {
CGContextRef context = GetDrawingContext();
CGRect bounds = GetDrawingBounds();
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextSetLineWidth(context, 5);
CGContextSetShadow(context, CGSize{ 10.f, 10.f }, 1.0);
CGPoint center = _CGRectGetCenter(bounds);
CGRect rect = _CGRectCenteredOnPoint({ 150, 150 }, center);
CGPoint rectCenter = _CGRectGetCenter(rect);
CGContextTranslateCTM(context, rectCenter.x, rectCenter.y);
CGContextRotateCTM(context, 15.f * M_PI / 180.f);
CGContextTranslateCTM(context, -rectCenter.x, -rectCenter.y);
CGContextStrokeRect(context, rect);
}
DISABLED_DRAW_TEST_F(CGImageDrawing, DrawIntoRect, UIKitMimicTest<>) {
// Draw a portion of an image into a different region.
auto drawingConfig = DrawingTestConfig::Get();
woc::unique_cf<CFStringRef> testFilename{ _CFStringCreateWithStdString(drawingConfig->GetResourcePath("png3.9.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);
_CGContextDrawImageRect(context,
image.get(),
{ 0, 0, bounds.size.width / 4, bounds.size.height / 4 },
{ 0, 0, bounds.size.width, bounds.size.height });
}