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/*
* This file is part of the internal font implementation. It should not be included by anyone other than
* FontMac.cpp, FontWin.cpp and Font.cpp.
*
* Copyright (C) 2006, 2007, 2008 Apple Inc.
* Copyright (C) 2008 Brent Fulgham
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "FontPlatformData.h"
#include "PlatformString.h"
#include "StringHash.h"
#include <wtf/HashMap.h>
#include <wtf/RetainPtr.h>
#include <wtf/Vector.h>
using std::min;
namespace WebCore {
static const int Bold = (1 << 0);
static const int Italic = (1 << 1);
static const int BoldOblique = (1 << 2);
static int CALLBACK enumStylesCallback(const LOGFONT* logFont, const TEXTMETRIC* metrics, DWORD fontType, LPARAM lParam)
{
int *style = reinterpret_cast<int*>(lParam);
// FIXME: In order to accommodate Lucida we go ahead and consider a weight of 600 to be bold.
// This does mean we'll consider demibold and semibold fonts on windows to also be bold. This
// is rare enough that it seems like an ok hack for now.
if (logFont->lfWeight >= 600) {
if (logFont->lfItalic)
*style |= BoldOblique;
else
*style |= Bold;
} else if (logFont->lfItalic)
*style |= Italic;
return 1;
}
FontPlatformData::FontPlatformData(HFONT font, float size, bool bold, bool oblique, bool useGDI)
: m_font(font)
, m_size(size)
#if PLATFORM(CG)
, m_cgFont(0)
#elif PLATFORM(CAIRO)
, m_fontFace(0)
, m_scaledFont(0)
#endif
, m_syntheticBold(false)
, m_syntheticOblique(false)
, m_useGDI(useGDI)
{
HDC hdc = GetDC(0);
SaveDC(hdc);
SelectObject(hdc, font);
UINT bufferSize = GetOutlineTextMetrics(hdc, 0, NULL);
ASSERT_WITH_MESSAGE(bufferSize != 0, "Bitmap fonts not supported with CoreGraphics.");
if (bufferSize != 0) {
OUTLINETEXTMETRICW* metrics = (OUTLINETEXTMETRICW*)malloc(bufferSize);
GetOutlineTextMetricsW(hdc, bufferSize, metrics);
WCHAR* faceName = (WCHAR*)((uintptr_t)metrics + (uintptr_t)metrics->otmpFaceName);
if (!useGDI && (bold || oblique)) {
LOGFONT logFont;
int len = min((int)wcslen(faceName), LF_FACESIZE - 1);
memcpy(logFont.lfFaceName, faceName, len * sizeof(WORD));
logFont.lfFaceName[len] = '\0';
logFont.lfCharSet = metrics->otmTextMetrics.tmCharSet;
logFont.lfPitchAndFamily = 0;
int styles = 0;
EnumFontFamiliesEx(hdc, &logFont, enumStylesCallback, reinterpret_cast<LPARAM>(&styles), 0);
// Check if we need to synthesize bold or oblique. The rule that complicates things here
// is that if the requested font is bold and oblique, and both a bold font and an oblique font
// exist, the bold font should be used, and oblique synthesized.
if (bold && oblique) {
if (styles == 0) {
m_syntheticBold = true;
m_syntheticOblique = true;
} else if (styles & Bold)
m_syntheticOblique = true;
else if (styles & Italic)
m_syntheticBold = true;
} else if (bold && (!(styles & Bold)))
m_syntheticBold = true;
else if (oblique && !(styles & Italic))
m_syntheticOblique = true;
}
platformDataInit(font, size, hdc, faceName);
free(metrics);
}
RestoreDC(hdc, -1);
ReleaseDC(0, hdc);
}
FontPlatformData::FontPlatformData(float size, bool bold, bool oblique)
: m_font(0)
, m_size(size)
#if PLATFORM(CG)
, m_cgFont(0)
#elif PLATFORM(CAIRO)
, m_fontFace(0)
, m_scaledFont(0)
#endif
, m_syntheticBold(bold)
, m_syntheticOblique(oblique)
, m_useGDI(false)
{
}
FontPlatformData::~FontPlatformData()
{
}
}
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