SimpleFontDataWin.cpp [plain text]
#include "config.h"
#include "SimpleFontData.h"
#include <winsock2.h>
#include "Font.h"
#include "FontCache.h"
#include "FloatRect.h"
#include "FontDescription.h"
#include <wtf/MathExtras.h>
#include <unicode/uchar.h>
#include <unicode/unorm.h>
#include <ApplicationServices/ApplicationServices.h>
#include <mlang.h>
#include <tchar.h>
#include <WebKitSystemInterface/WebKitSystemInterface.h>
namespace WebCore {
using std::max;
const float cSmallCapsFontSizeMultiplier = 0.7f;
static bool g_shouldApplyMacAscentHack;
void SimpleFontData::setShouldApplyMacAscentHack(bool b)
{
g_shouldApplyMacAscentHack = b;
}
bool SimpleFontData::shouldApplyMacAscentHack()
{
return g_shouldApplyMacAscentHack;
}
SimpleFontData* SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const
{
if (!m_smallCapsFontData) {
float smallCapsHeight = cSmallCapsFontSizeMultiplier * m_font.size();
if (isCustomFont()) {
FontPlatformData smallCapsFontData(m_font);
smallCapsFontData.setSize(smallCapsHeight);
m_smallCapsFontData = new SimpleFontData(smallCapsFontData, true, false);
} else {
LOGFONT winfont;
GetObject(m_font.hfont(), sizeof(LOGFONT), &winfont);
winfont.lfHeight = -lroundf(smallCapsHeight * (m_font.useGDI() ? 1 : 32));
HFONT hfont = CreateFontIndirect(&winfont);
m_smallCapsFontData = new SimpleFontData(FontPlatformData(hfont, smallCapsHeight, fontDescription.bold(), fontDescription.italic(), m_font.useGDI()));
}
}
return m_smallCapsFontData;
}
bool SimpleFontData::containsCharacters(const UChar* characters, int length) const
{
if (isCustomFont())
return false;
IMLangFontLink2* langFontLink = FontCache::getFontLinkInterface();
if (!langFontLink)
return false;
HDC dc = GetDC(0);
DWORD acpCodePages;
langFontLink->CodePageToCodePages(CP_ACP, &acpCodePages);
DWORD fontCodePages;
langFontLink->GetFontCodePages(dc, m_font.hfont(), &fontCodePages);
DWORD actualCodePages;
long numCharactersProcessed;
long offset = 0;
while (offset < length) {
langFontLink->GetStrCodePages(characters, length, acpCodePages, &actualCodePages, &numCharactersProcessed);
if ((actualCodePages & fontCodePages) == 0)
return false;
offset += numCharactersProcessed;
}
ReleaseDC(0, dc);
return true;
}
void SimpleFontData::determinePitch()
{
if (isCustomFont()) {
m_treatAsFixedPitch = false;
return;
}
HDC dc = GetDC(0);
SaveDC(dc);
SelectObject(dc, m_font.hfont());
TEXTMETRIC tm;
GetTextMetrics(dc, &tm);
m_treatAsFixedPitch = ((tm.tmPitchAndFamily & TMPF_FIXED_PITCH) == 0);
RestoreDC(dc, -1);
ReleaseDC(0, dc);
}
SCRIPT_FONTPROPERTIES* SimpleFontData::scriptFontProperties() const
{
if (!m_scriptFontProperties) {
m_scriptFontProperties = new SCRIPT_FONTPROPERTIES;
memset(m_scriptFontProperties, 0, sizeof(SCRIPT_FONTPROPERTIES));
m_scriptFontProperties->cBytes = sizeof(SCRIPT_FONTPROPERTIES);
HRESULT result = ScriptGetFontProperties(0, scriptCache(), m_scriptFontProperties);
if (result == E_PENDING) {
HDC dc = GetDC(0);
SaveDC(dc);
SelectObject(dc, m_font.hfont());
ScriptGetFontProperties(dc, scriptCache(), m_scriptFontProperties);
RestoreDC(dc, -1);
ReleaseDC(0, dc);
}
}
return m_scriptFontProperties;
}
}