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/*
* Copyright (C) 2005, 2006, 2007 Apple Inc. All rights reserved.
* (C) 2007 Graham Dennis (graham.dennis@gmail.com)
* (C) 2007 Eric Seidel <eric@webkit.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "PixelDumpSupport.h"
#include "PixelDumpSupportCG.h"
#include "DumpRenderTree.h"
#include "TestRunner.h"
#include <CoreGraphics/CGBitmapContext.h>
#include <wtf/Assertions.h>
#include <wtf/RefPtr.h>
#import <WebKit/WebCoreStatistics.h>
#import <WebKit/WebDocumentPrivate.h>
#import <WebKit/WebHTMLViewPrivate.h>
#import <WebKit/WebKit.h>
#import <WebKit/WebViewPrivate.h>
static PassRefPtr<BitmapContext> createBitmapContext(size_t pixelsWide, size_t pixelsHigh, size_t& rowBytes, void*& buffer)
{
rowBytes = (4 * pixelsWide + 63) & ~63; // Use a multiple of 64 bytes to improve CG performance
buffer = calloc(pixelsHigh, rowBytes);
if (!buffer)
return 0;
// Creating this bitmap in the device color space prevents any color conversion when the image of the web view is drawn into it.
RetainPtr<CGColorSpaceRef> colorSpace = adoptCF(CGColorSpaceCreateDeviceRGB());
CGContextRef context = CGBitmapContextCreate(buffer, pixelsWide, pixelsHigh, 8, rowBytes, colorSpace.get(), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host); // Use ARGB8 on PPC or BGRA8 on X86 to improve CG performance
if (!context) {
free(buffer);
return 0;
}
return BitmapContext::createByAdoptingBitmapAndContext(buffer, context);
}
static void paintRepaintRectOverlay(WebView* webView, CGContextRef context)
{
CGRect viewRect = NSRectToCGRect([webView bounds]);
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, -viewRect.size.height);
CGContextSetRGBFillColor(context, 0, 0, 0, static_cast<CGFloat>(0.66));
CGContextFillRect(context, viewRect);
NSArray *repaintRects = [webView trackedRepaintRects];
if (repaintRects) {
for (NSValue *value in repaintRects) {
CGRect currRect = NSRectToCGRect([value rectValue]);
CGContextClearRect(context, currRect);
}
}
CGContextEndTransparencyLayer(context);
CGContextRestoreGState(context);
}
PassRefPtr<BitmapContext> createBitmapContextFromWebView(bool onscreen, bool incrementalRepaint, bool sweepHorizontally, bool drawSelectionRect)
{
WebView* view = [mainFrame webView];
// If the WebHTMLView uses accelerated compositing, we need for force the on-screen capture path
// and also force Core Animation to start its animations with -display since the DRT window has autodisplay disabled.
if ([view _isUsingAcceleratedCompositing])
onscreen = YES;
float deviceScaleFactor = [view _backingScaleFactor];
NSSize webViewSize = [view frame].size;
size_t pixelsWide = static_cast<size_t>(webViewSize.width * deviceScaleFactor);
size_t pixelsHigh = static_cast<size_t>(webViewSize.height * deviceScaleFactor);
size_t rowBytes = 0;
void* buffer = 0;
RefPtr<BitmapContext> bitmapContext = createBitmapContext(pixelsWide, pixelsHigh, rowBytes, buffer);
if (!bitmapContext)
return 0;
CGContextRef context = bitmapContext->cgContext();
CGContextScaleCTM(context, deviceScaleFactor, deviceScaleFactor);
NSGraphicsContext *nsContext = [NSGraphicsContext graphicsContextWithGraphicsPort:context flipped:NO];
ASSERT(nsContext);
if (incrementalRepaint) {
if (sweepHorizontally) {
for (NSRect column = NSMakeRect(0, 0, 1, webViewSize.height); column.origin.x < webViewSize.width; column.origin.x++)
[view displayRectIgnoringOpacity:column inContext:nsContext];
} else {
for (NSRect line = NSMakeRect(0, 0, webViewSize.width, 1); line.origin.y < webViewSize.height; line.origin.y++)
[view displayRectIgnoringOpacity:line inContext:nsContext];
}
} else {
if (deviceScaleFactor != 1) {
// Call displayRectIgnoringOpacity for HiDPI tests since it ensures we paint directly into the context
// that we have appropriately sized and scaled.
[view displayRectIgnoringOpacity:[view bounds] inContext:nsContext];
if ([view isTrackingRepaints])
paintRepaintRectOverlay(view, context);
} else if (onscreen) {
// displayIfNeeded does not update the CA layers if the layer-hosting view was not marked as needing display, so
// we're at the mercy of CA's display-link callback to update layers in time. So we need to force a display of the view
// to get AppKit to update the CA layers synchronously.
// FIXME: this will break repaint testing if we have compositing in repaint tests
// (displayWebView() painted gray over the webview, but we'll be making everything repaint again).
[view display];
// Ask the window server to provide us a composited version of the *real* window content including surfaces (i.e. OpenGL content)
// Note that the returned image might differ very slightly from the window backing because of dithering artifacts in the window server compositor.
CGImageRef image = CGWindowListCreateImage(CGRectNull, kCGWindowListOptionIncludingWindow, [[view window] windowNumber], kCGWindowImageBoundsIgnoreFraming | kCGWindowImageShouldBeOpaque);
CGContextDrawImage(context, CGRectMake(0, 0, CGImageGetWidth(image), CGImageGetHeight(image)), image);
CGImageRelease(image);
if ([view isTrackingRepaints])
paintRepaintRectOverlay(view, context);
} else {
// Make sure the view has been painted.
[view displayIfNeeded];
// Grab directly the contents of the window backing buffer (this ignores any surfaces on the window)
// FIXME: This path is suboptimal: data is read from window backing store, converted to RGB8 then drawn again into an RGBA8 bitmap
[view lockFocus];
NSBitmapImageRep *imageRep = [[[NSBitmapImageRep alloc] initWithFocusedViewRect:[view frame]] autorelease];
[view unlockFocus];
RetainPtr<NSGraphicsContext> savedContext = [NSGraphicsContext currentContext];
[NSGraphicsContext setCurrentContext:nsContext];
[imageRep draw];
if ([view isTrackingRepaints])
paintRepaintRectOverlay(view, context);
[NSGraphicsContext setCurrentContext:savedContext.get()];
}
}
if (drawSelectionRect) {
NSView *documentView = [[mainFrame frameView] documentView];
ASSERT([documentView conformsToProtocol:@protocol(WebDocumentSelection)]);
NSRect rect = [documentView convertRect:[(id <WebDocumentSelection>)documentView selectionRect] fromView:nil];
CGContextSaveGState(context);
CGContextSetLineWidth(context, 1.0);
CGContextSetRGBStrokeColor(context, 1.0, 0.0, 0.0, 1.0);
CGContextStrokeRect(context, CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height));
CGContextRestoreGState(context);
}
return bitmapContext.release();
}
PassRefPtr<BitmapContext> createPagedBitmapContext()
{
int pageWidthInPixels = TestRunner::viewWidth;
int pageHeightInPixels = TestRunner::viewHeight;
int numberOfPages = [mainFrame numberOfPagesWithPageWidth:pageWidthInPixels pageHeight:pageHeightInPixels];
size_t rowBytes = 0;
void* buffer = 0;
RefPtr<BitmapContext> bitmapContext = createBitmapContext(pageWidthInPixels, numberOfPages * (pageHeightInPixels + 1) - 1, rowBytes, buffer);
[mainFrame printToCGContext:bitmapContext->cgContext() pageWidth:pageWidthInPixels pageHeight:pageHeightInPixels];
return bitmapContext.release();
}
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