Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 179 insertions, 0 deletions

diff --git a/Source/WebKit/win/WebKitGraphics.cpp b/Source/WebKit/win/WebKitGraphics.cpp
new file mode 100644
index 000000000..7423ad362
--- /dev/null
+++ b/Source/WebKit/win/WebKitGraphics.cpp
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2007 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. 
+ */
+
+#include "config.h"
+#include "WebKitGraphics.h"
+
+#include "WebKit.h"
+#include "WebKitDLL.h"
+
+#include "WebPreferences.h"
+
+#include <WebCore/Font.h>
+#include <WebCore/FontCache.h>
+#include <WebCore/FontDescription.h>
+#include <WebCore/FontSelector.h>
+#include <WebCore/GraphicsContext.h>
+#include <WebCore/PlatformString.h>
+#include <WebCore/StringTruncator.h>
+#include <WebCore/WebCoreTextRenderer.h>
+#include <wtf/unicode/CharacterNames.h>
+
+#include <CoreGraphics/CoreGraphics.h>
+
+#include <WebKitSystemInterface/WebKitSystemInterface.h>
+
+using namespace WebCore;
+
+static Font makeFont(const WebFontDescription& description)
+{
+    AtomicString::init();
+
+    String fontFamilyString(description.family, description.familyLength);
+
+    FontDescription f;
+    FontFamily family;
+    family.setFamily(fontFamilyString);
+    f.setFamily(family);
+    f.setSpecifiedSize(description.size);
+    f.setComputedSize(description.size);
+    f.setItalic(description.italic);
+    f.setWeight(description.bold ? FontWeightBold : FontWeightNormal);
+    f.setIsAbsoluteSize(true);
+
+    FontSmoothingType smoothingType;
+    if (SUCCEEDED(WebPreferences::sharedStandardPreferences()->fontSmoothing(&smoothingType)))
+        f.setRenderingMode(smoothingType == FontSmoothingTypeWindows ? AlternateRenderingMode : NormalRenderingMode);
+
+    Font font(f, 0, 0);
+    font.update(0);
+
+    return font;
+}
+
+// Text shadow is added post 3.1.1.  In order for nightlies to not break Safari 3.1.1, we should still allow
+// the old WebTextRenderInfo that has a smaller structSize than the current one with the new text shadow data members.
+struct WebTextRenderInfoWithoutShadow
+{
+    DWORD structSize;
+    CGContextRef cgContext;
+    LPCTSTR text;
+    int length;
+    POINT pt;
+    const WebFontDescription* description;
+    CGColorRef color;
+    int underlinedIndex;
+    bool drawAsPassword;
+    int overrideSmoothingLevel; // pass in -1 if caller does not want to override smoothing level
+};
+
+void WebDrawText(WebTextRenderInfo* info)
+{
+    if (!info || info->structSize < sizeof(WebTextRenderInfoWithoutShadow) || !info->cgContext || !info->description)
+        return;
+
+    int oldFontSmoothingLevel = -1;
+    if (info->overrideSmoothingLevel >= 0) {
+        oldFontSmoothingLevel = wkGetFontSmoothingLevel();
+        wkSetFontSmoothingLevel(info->overrideSmoothingLevel);
+    }
+
+    {
+        GraphicsContext context(info->cgContext);
+        String drawString(info->text, info->length);
+        if (info->drawAsPassword)
+            drawString.fill(WTF::Unicode::bullet);
+
+        context.save();
+
+        // Set shadow setting
+        if (info->structSize == sizeof(WebTextRenderInfo) &&
+            (info->shadowOffset.cx || info->shadowOffset.cy || info->shadowBlur || info->shadowColor))
+            context.setShadow(FloatSize(info->shadowOffset.cx, info->shadowOffset.cy), info->shadowBlur, info->shadowColor, ColorSpaceDeviceRGB);
+
+        WebCoreDrawTextAtPoint(context, drawString, info->pt, makeFont(*(info->description)), info->color, info->underlinedIndex);
+        context.restore();
+    }
+
+    if (info->overrideSmoothingLevel >= 0)
+        wkSetFontSmoothingLevel(oldFontSmoothingLevel);
+}
+
+float TextFloatWidth(LPCTSTR text, int length, const WebFontDescription& description)
+{
+    return WebCoreTextFloatWidth(String(text, length), makeFont(description));
+}
+
+void FontMetrics(const WebFontDescription& description, int* ascent, int* descent, int* lineSpacing)
+{
+    if (!ascent && !descent && !lineSpacing)
+        return;
+
+    Font font(makeFont(description));
+    const WebCore::FontMetrics& fontMetrics(font.fontMetrics());
+
+    if (ascent)
+        *ascent = fontMetrics.ascent();
+
+    if (descent)
+        *descent = fontMetrics.descent();
+
+    if (lineSpacing)
+        *lineSpacing = fontMetrics.lineSpacing();
+}
+
+unsigned CenterTruncateStringToWidth(LPCTSTR text, int length, const WebFontDescription& description, float width, WCHAR* buffer)
+{
+    ASSERT(buffer);
+
+    FontCachePurgePreventer fontCachePurgePreventer;
+
+    String result = StringTruncator::centerTruncate(String(text, length), width, makeFont(description), StringTruncator::EnableRoundingHacks);
+    memcpy(buffer, result.characters(), result.length() * sizeof(UChar));
+    buffer[result.length()] = '\0';
+    return result.length();
+}
+
+unsigned RightTruncateStringToWidth(LPCTSTR text, int length, const WebFontDescription& description, float width, WCHAR* buffer)
+{
+    ASSERT(buffer);
+
+    FontCachePurgePreventer fontCachePurgePreventer;
+
+    String result = StringTruncator::rightTruncate(String(text, length), width, makeFont(description), StringTruncator::EnableRoundingHacks);
+    memcpy(buffer, result.characters(), result.length() * sizeof(UChar));
+    buffer[result.length()] = '\0';
+    return result.length();
+}
+
+void WebKitSetShouldUseFontSmoothing(bool smooth)
+{
+    WebCoreSetShouldUseFontSmoothing(smooth);
+}
+
+bool WebKitShouldUseFontSmoothing()
+{
+    return WebCoreShouldUseFontSmoothing();
+}