GraphicsContextMac.mm [plain text]
/*
* Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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.
*/
#import "config.h"
#import "GraphicsContext.h"
#import "GraphicsContextPlatformPrivateCG.h"
#import <wtf/StdLibExtras.h>
#import "Color.h"
#import "WKGraphics.h"
#import <wtf/UnusedParam.h>
#import "WebCoreSystemInterface.h"
@class NSColor;
// FIXME: More of this should use CoreGraphics instead of AppKit.
// FIXME: More of this should move into GraphicsContextCG.cpp.
namespace WebCore {
// NSColor, NSBezierPath, and NSGraphicsContext
// calls in this file are all exception-safe, so we don't block
// exceptions for those.
void GraphicsContext::drawFocusRing(const Vector<IntRect>& rects, int width, int offset, const Color& color)
{
UNUSED_PARAM(rects);
UNUSED_PARAM(width);
UNUSED_PARAM(offset);
UNUSED_PARAM(color);
}
#ifdef BUILDING_ON_TIGER // Post-Tiger's setCompositeOperation() is defined in GraphicsContextCG.cpp.
void GraphicsContext::setCompositeOperation(CompositeOperator op)
{
if (paintingDisabled())
return;
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
[[NSGraphicsContext graphicsContextWithGraphicsPort:platformContext() flipped:YES]
setCompositingOperation:(NSCompositingOperation)op];
[pool drain];
}
#endif
static CGPatternRef createSpellingPattern(bool& usingDot)
{
CGImageRef image = WKGraphicsCreateImageFromBundleWithName("SpellingDot");
ASSERT(image); // if image is not available, we want to know
CGPatternRef spellingPattern = WKCreatePatternFromCGImage(image);
CGImageRelease(image);
usingDot = true;
return spellingPattern;
}
// WebKit on Mac is a standard platform component, so it must use the standard platform artwork for underline.
void GraphicsContext::drawLineForMisspellingOrBadGrammar(const IntPoint& point, int width, bool grammar)
{
if (paintingDisabled())
return;
// These are the same for misspelling or bad grammar.
int patternHeight = cMisspellingLineThickness;
int patternWidth = cMisspellingLinePatternWidth;
UNUSED_PARAM(grammar);
bool usingDot = false;
DEFINE_STATIC_LOCAL(RetainPtr<CGPattern>, spellingPattern, (createSpellingPattern(usingDot)));
// 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.
if (usingDot) {
// allow slightly more considering that the pattern ends with a transparent pixel
int widthMod = width % patternWidth;
if (patternWidth - widthMod > cMisspellingLinePatternGapWidth)
width -= widthMod;
}
// FIXME: This code should not use NSGraphicsContext currentContext
// In order to remove this requirement we will need to use CGPattern instead of NSColor
// FIXME: This code should not be using wkSetPatternPhaseInUserSpace, as this approach is wrong
// for transforms.
// Draw underline.
CGContextRef context = platformContext();
CGContextSaveGState(context);
WKSetPattern(context, spellingPattern.get(), YES, YES);
wkSetPatternPhaseInUserSpace(context, point);
WKRectFillUsingOperation(context, CGRectMake(point.x(), point.y(), width, patternHeight), kCGCompositeSover);
CGContextRestoreGState(context);
}
}