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/*
* 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"
#pragma warning(push, 0)
#include <WebCore/CharacterNames.h>
#include <WebCore/Font.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 <CoreGraphics/CoreGraphics.h>
#pragma warning(pop)
#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 = drawString.impl()->secure(WebCore::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));
if (ascent)
*ascent = font.ascent();
if (descent)
*descent = font.descent();
if (lineSpacing)
*lineSpacing = font.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), false);
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);
String result = StringTruncator::rightTruncate(String(text, length), width, makeFont(description), false);
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();
}
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