auto import from //depot/cupcake/@135843

1 files changed, 291 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/cg/PathCG.cpp b/WebCore/platform/graphics/cg/PathCG.cpp
new file mode 100644
index 0000000..1382589
--- /dev/null
+++ b/WebCore/platform/graphics/cg/PathCG.cpp
@@ -0,0 +1,291 @@
+/*
+ * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
+ *                     2006, 2008 Rob Buis <buis@kde.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.
+ *
+ * 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. 
+ */
+
+#include "config.h"
+#include "Path.h"
+
+#if PLATFORM(CG)
+
+#include "AffineTransform.h"
+#include <ApplicationServices/ApplicationServices.h>
+#include "FloatRect.h"
+#include "IntRect.h"
+#include "PlatformString.h"
+
+#include <wtf/MathExtras.h>
+
+namespace WebCore {
+
+Path::Path()
+    : m_path(CGPathCreateMutable())
+{
+}
+
+Path::~Path()
+{
+    CGPathRelease(m_path);
+}
+
+Path::Path(const Path& other)
+    : m_path(CGPathCreateMutableCopy(other.m_path))
+{
+}
+
+Path& Path::operator=(const Path& other)
+{
+    CGMutablePathRef path = CGPathCreateMutableCopy(other.m_path);
+    CGPathRelease(m_path);
+    m_path = path;
+    return *this;
+}
+
+
+static void copyClosingSubpathsApplierFunction(void* info, const CGPathElement* element)
+{
+    CGMutablePathRef path = static_cast<CGMutablePathRef>(info);
+    CGPoint* points = element->points;
+    
+    switch (element->type) {
+    case kCGPathElementMoveToPoint:
+        if (!CGPathIsEmpty(path)) // to silence a warning when trying to close an empty path
+            CGPathCloseSubpath(path); // This is the only change from CGPathCreateMutableCopy
+        CGPathMoveToPoint(path, 0, points[0].x, points[0].y);
+        break;
+    case kCGPathElementAddLineToPoint:
+        CGPathAddLineToPoint(path, 0, points[0].x, points[0].y);
+        break;
+    case kCGPathElementAddQuadCurveToPoint:
+        CGPathAddQuadCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y);
+        break;
+    case kCGPathElementAddCurveToPoint:
+        CGPathAddCurveToPoint(path, 0, points[0].x, points[0].y, points[1].x, points[1].y, points[2].x, points[2].y);
+        break;
+    case kCGPathElementCloseSubpath:
+        CGPathCloseSubpath(path);
+        break;
+    }
+}
+
+static CGMutablePathRef copyCGPathClosingSubpaths(CGPathRef originalPath)
+{
+    CGMutablePathRef path = CGPathCreateMutable();
+    CGPathApply(originalPath, path, copyClosingSubpathsApplierFunction);
+    CGPathCloseSubpath(path);
+    return path;
+}
+
+bool Path::contains(const FloatPoint &point, WindRule rule) const
+{
+    if (!boundingRect().contains(point))
+        return false;
+
+    // CGPathContainsPoint returns false for non-closed paths, as a work-around, we copy and close the path first.  Radar 4758998 asks for a better CG API to use
+    CGMutablePathRef path = copyCGPathClosingSubpaths(m_path);
+    bool ret = CGPathContainsPoint(path, 0, point, rule == RULE_EVENODD ? true : false);
+    CGPathRelease(path);
+    return ret;
+}
+
+void Path::translate(const FloatSize& size)
+{
+    CGAffineTransform translation = CGAffineTransformMake(1, 0, 0, 1, size.width(), size.height());
+    CGMutablePathRef newPath = CGPathCreateMutable();
+    CGPathAddPath(newPath, &translation, m_path);
+    CGPathRelease(m_path);
+    m_path = newPath;
+}
+
+FloatRect Path::boundingRect() const
+{
+    return CGPathGetBoundingBox(m_path);
+}
+
+void Path::moveTo(const FloatPoint& point)
+{
+    CGPathMoveToPoint(m_path, 0, point.x(), point.y());
+}
+
+void Path::addLineTo(const FloatPoint& p)
+{
+    CGPathAddLineToPoint(m_path, 0, p.x(), p.y());
+}
+
+void Path::addQuadCurveTo(const FloatPoint& cp, const FloatPoint& p)
+{
+    CGPathAddQuadCurveToPoint(m_path, 0, cp.x(), cp.y(), p.x(), p.y());
+}
+
+void Path::addBezierCurveTo(const FloatPoint& cp1, const FloatPoint& cp2, const FloatPoint& p)
+{
+    CGPathAddCurveToPoint(m_path, 0, cp1.x(), cp1.y(), cp2.x(), cp2.y(), p.x(), p.y());
+}
+
+void Path::addArcTo(const FloatPoint& p1, const FloatPoint& p2, float radius)
+{
+    CGPathAddArcToPoint(m_path, 0, p1.x(), p1.y(), p2.x(), p2.y(), radius);
+}
+
+void Path::closeSubpath()
+{
+    if (!CGPathIsEmpty(m_path)) // to silence a warning when trying to close an empty path
+        CGPathCloseSubpath(m_path);
+}
+
+void Path::addArc(const FloatPoint& p, float r, float sa, float ea, bool clockwise)
+{
+    // Workaround for <rdar://problem/5189233> CGPathAddArc hangs or crashes when passed inf as start or end angle
+    if (isfinite(sa) && isfinite(ea))
+        CGPathAddArc(m_path, 0, p.x(), p.y(), r, sa, ea, clockwise);
+}
+
+void Path::addRect(const FloatRect& r)
+{
+    CGPathAddRect(m_path, 0, r);
+}
+
+void Path::addEllipse(const FloatRect& r)
+{
+    CGPathAddEllipseInRect(m_path, 0, r);
+}
+
+void Path::clear()
+{
+    CGPathRelease(m_path);
+    m_path = CGPathCreateMutable();
+}
+
+bool Path::isEmpty() const
+{
+    return CGPathIsEmpty(m_path);
+ }
+
+static void CGPathToCFStringApplierFunction(void* info, const CGPathElement *element)
+{
+    CFMutableStringRef string = (CFMutableStringRef)info;
+    CFStringRef typeString = CFSTR("");
+    CGPoint* points = element->points;
+    switch (element->type) {
+    case kCGPathElementMoveToPoint:
+        CFStringAppendFormat(string, 0, CFSTR("M%.2f,%.2f "), points[0].x, points[0].y);
+        break;
+    case kCGPathElementAddLineToPoint:
+        CFStringAppendFormat(string, 0, CFSTR("L%.2f,%.2f "), points[0].x, points[0].y);
+        break;
+    case kCGPathElementAddQuadCurveToPoint:
+        CFStringAppendFormat(string, 0, CFSTR("Q%.2f,%.2f,%.2f,%.2f "),
+                points[0].x, points[0].y, points[1].x, points[1].y);
+        break;
+    case kCGPathElementAddCurveToPoint:
+        CFStringAppendFormat(string, 0, CFSTR("C%.2f,%.2f,%.2f,%.2f,%.2f,%.2f "),
+                points[0].x, points[0].y, points[1].x, points[1].y,
+                points[2].x, points[2].y);
+        break;
+    case kCGPathElementCloseSubpath:
+        typeString = CFSTR("X"); break;
+    }
+}
+
+static CFStringRef CFStringFromCGPath(CGPathRef path)
+{
+    if (!path)
+        return 0;
+
+    CFMutableStringRef string = CFStringCreateMutable(NULL, 0);
+    CGPathApply(path, string, CGPathToCFStringApplierFunction);
+    CFStringTrimWhitespace(string);
+
+
+    return string;
+}
+
+
+#pragma mark -
+#pragma mark Path Management
+
+String Path::debugString() const
+{
+    String result;
+    if (!isEmpty()) {
+        CFStringRef pathString = CFStringFromCGPath(m_path);
+        result = String(pathString);
+        CFRelease(pathString);
+    }
+    return result;
+}
+
+struct PathApplierInfo {
+    void* info;
+    PathApplierFunction function;
+};
+
+void CGPathApplierToPathApplier(void *info, const CGPathElement *element)
+{
+    PathApplierInfo* pinfo = (PathApplierInfo*)info;
+    FloatPoint points[3];
+    PathElement pelement;
+    pelement.type = (PathElementType)element->type;
+    pelement.points = points;
+    CGPoint* cgPoints = element->points;
+    switch (element->type) {
+    case kCGPathElementMoveToPoint:
+    case kCGPathElementAddLineToPoint:
+        points[0] = cgPoints[0];
+        break;
+    case kCGPathElementAddQuadCurveToPoint:
+        points[0] = cgPoints[0];
+        points[1] = cgPoints[1];
+        break;
+    case kCGPathElementAddCurveToPoint:
+        points[0] = cgPoints[0];
+        points[1] = cgPoints[1];
+        points[2] = cgPoints[2];
+        break;
+    case kCGPathElementCloseSubpath:
+        break;
+    }
+    pinfo->function(pinfo->info, &pelement);
+}
+
+void Path::apply(void* info, PathApplierFunction function) const
+{
+    PathApplierInfo pinfo;
+    pinfo.info = info;
+    pinfo.function = function;
+    CGPathApply(m_path, &pinfo, CGPathApplierToPathApplier);
+}
+
+void Path::transform(const AffineTransform& transform)
+{
+    CGMutablePathRef path = CGPathCreateMutable();
+    CGAffineTransform transformCG = transform;
+    CGPathAddPath(path, &transformCG, m_path);
+    CGPathRelease(m_path);
+    m_path = path;
+}
+
+}
+
+#endif // PLATFORM(CG)