From 5e2bc6953fe6923165b8a5d7679939693a1d58d6 Mon Sep 17 00:00:00 2001
From: Steve Block <steveblock@google.com>
Date: Fri, 5 Feb 2010 14:27:46 +0000
Subject: Merge webkit.org at r54340 : Initial merge by git

Change-Id: Ib489d2ff91186ea3652522e1d586e54416a2cf44
---
 WebCore/platform/graphics/qt/GraphicsContextQt.cpp | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'WebCore/platform/graphics/qt/GraphicsContextQt.cpp')

diff --git a/WebCore/platform/graphics/qt/GraphicsContextQt.cpp b/WebCore/platform/graphics/qt/GraphicsContextQt.cpp
index b78a6e8..9046449 100644
--- a/WebCore/platform/graphics/qt/GraphicsContextQt.cpp
+++ b/WebCore/platform/graphics/qt/GraphicsContextQt.cpp
@@ -40,6 +40,7 @@
 #include <windows.h>
 #endif
 
+#include "AffineTransform.h"
 #include "Color.h"
 #include "FloatConversion.h"
 #include "Font.h"
@@ -275,6 +276,13 @@ PlatformGraphicsContext* GraphicsContext::platformContext() const
     return m_data->p();
 }
 
+AffineTransform GraphicsContext::getAffineCTM() const
+{
+    QTransform matrix(platformContext()->combinedTransform());
+    return AffineTransform(matrix.m11(), matrix.m12(), matrix.m21(),
+                           matrix.m22(), matrix.dx(), matrix.dy());
+}
+
 TransformationMatrix GraphicsContext::getCTM() const
 {
     QTransform matrix(platformContext()->combinedTransform());
@@ -1188,6 +1196,24 @@ void GraphicsContext::addInnerRoundedRectClip(const IntRect& rect,
     p->setRenderHint(QPainter::Antialiasing, antiAlias);
 }
 
+void GraphicsContext::concatCTM(const AffineTransform& transform)
+{
+    if (paintingDisabled())
+        return;
+
+    m_data->p()->setWorldTransform(transform, true);
+
+    // Transformations to the context shouldn't transform the currentPath.
+    // We have to undo every change made to the context from the currentPath
+    // to avoid wrong drawings.
+    if (!m_data->currentPath.isEmpty() && transform.isInvertible()) {
+        QTransform matrix = transform.inverse();
+        m_data->currentPath = m_data->currentPath * matrix;
+        m_common->state.pathTransform.multiply(transform.toTransformationMatrix());
+    }
+}
+
+
 void GraphicsContext::concatCTM(const TransformationMatrix& transform)
 {
     if (paintingDisabled())
-- 
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