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/*
* Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple 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 "GraphicsContextCG.h"
#import "GraphicsContextPlatformPrivateCG.h"
#import <AppKit/AppKit.h>
#import <wtf/StdLibExtras.h>
#import "LocalCurrentGraphicsContext.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.
static void drawFocusRingToContext(CGContextRef context, CGPathRef focusRingPath, CGColorRef color, int radius)
{
CGContextBeginPath(context);
CGContextAddPath(context, focusRingPath);
wkDrawFocusRing(context, color, radius);
}
void GraphicsContext::drawFocusRing(const Path& path, int width, int /*offset*/, const Color& color)
{
// FIXME: Use 'offset' for something? http://webkit.org/b/49909
if (paintingDisabled() || path.isNull())
return;
int radius = (width - 1) / 2;
CGColorRef colorRef = color.isValid() ? cachedCGColor(color, ColorSpaceDeviceRGB) : 0;
drawFocusRingToContext(platformContext(), path.platformPath(), colorRef, radius);
}
void GraphicsContext::drawFocusRing(const Vector<IntRect>& rects, int width, int offset, const Color& color)
{
if (paintingDisabled())
return;
int radius = (width - 1) / 2;
offset += radius;
CGColorRef colorRef = color.isValid() ? cachedCGColor(color, ColorSpaceDeviceRGB) : 0;
RetainPtr<CGMutablePathRef> focusRingPath = adoptCF(CGPathCreateMutable());
unsigned rectCount = rects.size();
for (unsigned i = 0; i < rectCount; i++)
CGPathAddRect(focusRingPath.get(), 0, CGRectInset(rects[i], -offset, -offset));
drawFocusRingToContext(platformContext(), focusRingPath.get(), colorRef, radius);
}
static NSColor* createPatternColor(NSString* firstChoiceName, NSString* secondChoiceName, NSColor* defaultColor, bool& usingDot)
{
// Eventually we should be able to get rid of the secondChoiceName. For the time being we need both to keep
// this working on all platforms.
NSImage *image = [NSImage imageNamed:firstChoiceName];
if (!image)
image = [NSImage imageNamed:secondChoiceName];
ASSERT(image); // if image is not available, we want to know
NSColor *color = (image ? [NSColor colorWithPatternImage:image] : nil);
if (color)
usingDot = true;
else
color = defaultColor;
return color;
}
// WebKit on Mac is a standard platform component, so it must use the standard platform artwork for underline.
void GraphicsContext::drawLineForDocumentMarker(const FloatPoint& point, float width, DocumentMarkerLineStyle style)
{
if (paintingDisabled())
return;
// These are the same for misspelling or bad grammar.
int patternHeight = cMisspellingLineThickness;
float patternWidth = cMisspellingLinePatternWidth;
bool usingDot;
NSColor *patternColor;
switch (style) {
case DocumentMarkerSpellingLineStyle:
{
// Constants for spelling pattern color.
static bool usingDotForSpelling = false;
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, spellingPatternColor, (createPatternColor(@"NSSpellingDot", @"SpellingDot", [NSColor redColor], usingDotForSpelling)));
usingDot = usingDotForSpelling;
patternColor = spellingPatternColor.get();
break;
}
case DocumentMarkerGrammarLineStyle:
{
// Constants for grammar pattern color.
static bool usingDotForGrammar = false;
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, grammarPatternColor, (createPatternColor(@"NSGrammarDot", @"GrammarDot", [NSColor greenColor], usingDotForGrammar)));
usingDot = usingDotForGrammar;
patternColor = grammarPatternColor.get();
break;
}
#if PLATFORM(MAC) && (PLATFORM(IOS) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
// To support correction panel.
case DocumentMarkerAutocorrectionReplacementLineStyle:
case DocumentMarkerDictationAlternativesLineStyle:
{
// Constants for spelling pattern color.
static bool usingDotForSpelling = false;
DEFINE_STATIC_LOCAL(RetainPtr<NSColor>, spellingPatternColor, (createPatternColor(@"NSCorrectionDot", @"CorrectionDot", [NSColor blueColor], usingDotForSpelling)));
usingDot = usingDotForSpelling;
patternColor = spellingPatternColor.get();
break;
}
#endif
default:
return;
}
// 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
float widthMod = fmodf(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.
LocalCurrentGraphicsContext localContext(this);
NSGraphicsContext *currentContext = [NSGraphicsContext currentContext];
CGContextRef context = (CGContextRef)[currentContext graphicsPort];
CGContextSaveGState(context);
[patternColor set];
wkSetPatternPhaseInUserSpace(context, point);
NSRectFillUsingOperation(NSMakeRect(point.x(), point.y(), width, patternHeight), NSCompositeSourceOver);
CGContextRestoreGState(context);
}
CGColorSpaceRef linearRGBColorSpaceRef()
{
static CGColorSpaceRef linearSRGBSpace = 0;
if (linearSRGBSpace)
return linearSRGBSpace;
RetainPtr<NSString> iccProfilePath = [[NSBundle bundleWithIdentifier:@"com.apple.WebCore"] pathForResource:@"linearSRGB" ofType:@"icc"];
RetainPtr<NSData> iccProfileData = adoptNS([[NSData alloc] initWithContentsOfFile:iccProfilePath.get()]);
if (iccProfileData)
linearSRGBSpace = CGColorSpaceCreateWithICCProfile((CFDataRef)iccProfileData.get());
// If we fail to load the linearized sRGB ICC profile, fall back to DeviceRGB.
if (!linearSRGBSpace)
return deviceRGBColorSpaceRef();
return linearSRGBSpace;
}
}
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