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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/platform/win/WebCoreTextRenderer.cpp | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/platform/win/WebCoreTextRenderer.cpp')
-rw-r--r-- | Source/WebCore/platform/win/WebCoreTextRenderer.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/Source/WebCore/platform/win/WebCoreTextRenderer.cpp b/Source/WebCore/platform/win/WebCoreTextRenderer.cpp new file mode 100644 index 0000000..a32fa4f --- /dev/null +++ b/Source/WebCore/platform/win/WebCoreTextRenderer.cpp @@ -0,0 +1,126 @@ +/* + * 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 "WebCoreTextRenderer.h" + +#include "Font.h" +#include "FontDescription.h" +#include "GraphicsContext.h" +#include "StringTruncator.h" +#include <wtf/unicode/Unicode.h> + +namespace WebCore { + +static bool shouldUseFontSmoothing = true; + +static bool isOneLeftToRightRun(const TextRun& run) +{ + for (int i = 0; i < run.length(); i++) { + WTF::Unicode::Direction direction = WTF::Unicode::direction(run[i]); + if (direction == WTF::Unicode::RightToLeft || direction > WTF::Unicode::OtherNeutral) + return false; + } + return true; +} + +static void doDrawTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& color, int underlinedIndex) +{ + TextRun run(text.characters(), text.length()); + + context.setFillColor(color, ColorSpaceDeviceRGB); + if (isOneLeftToRightRun(run)) + font.drawText(&context, run, point); + else + context.drawBidiText(font, run, point); + + if (underlinedIndex >= 0) { + ASSERT(underlinedIndex < static_cast<int>(text.length())); + + int beforeWidth; + if (underlinedIndex > 0) { + TextRun beforeRun(text.characters(), underlinedIndex); + beforeWidth = font.width(beforeRun); + } else + beforeWidth = 0; + + TextRun underlinedRun(text.characters() + underlinedIndex, 1); + int underlinedWidth = font.width(underlinedRun); + + IntPoint underlinePoint(point); + underlinePoint.move(beforeWidth, 1); + + context.setStrokeColor(color, ColorSpaceDeviceRGB); + context.drawLineForText(underlinePoint, underlinedWidth, false); + } +} + +void WebCoreDrawTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& color, int underlinedIndex) +{ + context.save(); + + doDrawTextAtPoint(context, text, point, font, color, underlinedIndex); + + context.restore(); +} + +void WebCoreDrawDoubledTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& topColor, const Color& bottomColor, int underlinedIndex) +{ + context.save(); + + IntPoint textPos = point; + + doDrawTextAtPoint(context, text, textPos, font, bottomColor, underlinedIndex); + textPos.move(0, -1); + doDrawTextAtPoint(context, text, textPos, font, topColor, underlinedIndex); + + context.restore(); +} + +float WebCoreTextFloatWidth(const String& text, const Font& font) +{ + return StringTruncator::width(text, font, false); +} + +void WebCoreSetShouldUseFontSmoothing(bool smooth) +{ + shouldUseFontSmoothing = smooth; +} + +bool WebCoreShouldUseFontSmoothing() +{ + return shouldUseFontSmoothing; +} + +void WebCoreSetAlwaysUsesComplexTextCodePath(bool complex) +{ + Font::setCodePath(complex ? Font::Complex : Font::Auto); +} + +bool WebCoreAlwaysUsesComplexTextCodePath() +{ + return Font::codePath() == Font::Complex; +} + +} // namespace WebCore |