blob: 9ab97b3c862f4211808e89b814bac78e3ab67666 [file] [log] [blame]
/*
* 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 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 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 "WebKitGraphics.h"
#include "WebKit.h"
#include "WebKitDLL.h"
#include "WebPreferences.h"
#include <WebCore/CommonAtomStrings.h>
#include <WebCore/FontCascade.h>
#include <WebCore/FontDescription.h>
#include <WebCore/FontSelector.h>
#include <WebCore/GraphicsContext.h>
#include <WebCore/StringTruncator.h>
#include <WebCore/WebCoreTextRenderer.h>
#include <wtf/text/StringView.h>
#include <wtf/text/WTFString.h>
#include <wtf/unicode/CharacterNames.h>
#include <CoreGraphics/CoreGraphics.h>
using namespace WebCore;
static FontCascade makeFont(const WebFontDescription& description)
{
WebCore::initializeCommonAtomStrings();
String fontFamilyString(description.family, description.familyLength);
FontCascadeDescription f;
f.setOneFamily(fontFamilyString);
f.setSpecifiedSize(description.size);
f.setComputedSize(description.size);
f.setIsItalic(description.italic);
f.setWeight(description.bold ? boldWeightValue() : normalWeightValue());
f.setIsAbsoluteSize(true);
FontSmoothingType smoothingType;
if (SUCCEEDED(WebPreferences::sharedStandardPreferences()->fontSmoothing(&smoothingType)))
f.setRenderingMode(smoothingType == FontSmoothingTypeWindows ? FontRenderingMode::Alternate : FontRenderingMode::Normal);
FontCascade 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
};
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;
FontCascade 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);
String result = StringTruncator::centerTruncate(String(text, length), width, makeFont(description));
StringView(result).getCharactersWithUpconvert(buffer);
buffer[result.length()] = '\0';
return result.length();
}
unsigned RightTruncateStringToWidth(LPCTSTR text, int length, const WebFontDescription& description, float width, WCHAR* buffer)
{
ASSERT(buffer);
String result = StringTruncator::rightTruncate(String(text, length), width, makeFont(description));
StringView(result).getCharactersWithUpconvert(buffer);
buffer[result.length()] = '\0';
return result.length();
}
void WebKitSetShouldUseFontSmoothing(bool smooth)
{
WebCoreSetShouldUseFontSmoothing(smooth);
}
bool WebKitShouldUseFontSmoothing()
{
return WebCoreShouldUseFontSmoothing();
}