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/*
* Copyright (C) 2012, 2013 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; 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 "HarfBuzzFace.h"
#include "ITypeUtils.h"
#include <BlackBerryPlatformGraphicsContext.h>
#include <fs_api.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
FontPlatformData::FontPlatformData(FILECHAR* name, float size, bool syntheticBold, bool syntheticOblique, FontOrientation orientation, FontWidthVariant widthVariant)
: m_syntheticBold(syntheticBold)
, m_syntheticOblique(syntheticOblique)
, m_orientation(orientation)
, m_size(size)
, m_widthVariant(widthVariant)
, m_font(0)
, m_name(fastStrDup(name))
, m_scaledFont(0)
, m_harfBuzzFace()
, m_isColorBitmapFont(false)
{
ASSERT(name);
m_font = FS_new_client(BlackBerry::Platform::Graphics::getIType(), 0);
ASSERT(m_font);
applyState(m_font);
}
FontPlatformData::~FontPlatformData()
{
if (m_scaledFont) {
BlackBerry::Platform::Graphics::clearGlyphCacheForFont(m_scaledFont);
FS_end_client(m_scaledFont);
}
if (m_font && m_font != hashTableDeletedFontValue())
FS_end_client(m_font);
fastFree(m_name);
}
const char* FontPlatformData::name() const
{
return m_name;
}
bool FontPlatformData::applyState(FS_STATE* font, float scale) const
{
ASSERT(font);
ASSERT(m_name);
if (FS_set_font(font, m_name) != SUCCESS)
return false;
if (FS_set_cmap(font, 3, 10) != SUCCESS) // First try Windows Unicode with surrogates...
if (FS_set_cmap(font, 3, 1) != SUCCESS) // try normal Windows Unicode
if (FS_set_cmap(font, 1, 0) != SUCCESS)
return false;
if (m_syntheticBold) {
if (FS_set_bold_pct(font, ITYPEFAKEBOLDAMOUNT) != SUCCESS)
return false;
FS_set_flags(font, FLAGS_CHECK_CONTOUR_WINDING_ON); // we need correctly-wound contours to fake bold
} else {
if (FS_set_bold_pct(font, 0) != SUCCESS)
return false;
FS_set_flags(font, FLAGS_CHECK_CONTOUR_WINDING_OFF);
}
FS_FIXED skew = 0;
if (m_syntheticOblique)
skew = 13930; // 12 degrees
FS_FIXED fixedScale = std::min(FixMul(floatToITypeFixed(scale), floatToITypeFixed(m_size)), MAXITYPEFONTSCALE);
if (FS_set_scale(font, fixedScale, FixMul(fixedScale, skew), 0, fixedScale) != SUCCESS)
return false;
if (FS_set_flags(font, FLAGS_CMAP_OFF) != SUCCESS)
return false;
if (FS_set_flags(font, FLAGS_HINTS_OFF) != SUCCESS)
return false;
if (FS_set_flags(font, FLAGS_DEFAULT_CSM_OFF) != SUCCESS)
return false;
if (m_orientation == Vertical) {
if (FS_set_flags(font, FLAGS_VERTICAL_ON) != SUCCESS)
return false;
}
return true;
}
void FontPlatformData::platformDataInit(const FontPlatformData& source)
{
m_harfBuzzFace = source.m_harfBuzzFace;
m_scaledFont = 0;
if (source.m_font && source.m_font != hashTableDeletedFontValue()) {
m_font = FS_new_client(source.m_font, 0);
m_name = fastStrDup(source.name());
bool ret = applyState(m_font);
ASSERT_UNUSED(ret, ret);
} else
m_font = source.m_font;
}
const FontPlatformData& FontPlatformData::platformDataAssign(const FontPlatformData& other)
{
m_harfBuzzFace = other.m_harfBuzzFace;
m_scaledFont = 0;
if (other.m_font && other.m_font != hashTableDeletedFontValue()) {
m_font = FS_new_client(other.m_font, 0);
fastFree(m_name);
m_name = fastStrDup(other.name());
bool ret = applyState(m_font);
ASSERT_UNUSED(ret, ret);
} else
m_font = other.m_font;
return *this;
}
bool FontPlatformData::platformIsEqual(const FontPlatformData& other) const
{
if (m_font == other.m_font)
return true;
if (!m_font || m_font == hashTableDeletedFontValue() || !other.m_font || other.m_font == hashTableDeletedFontValue())
return false;
return m_font->cur_sfnt == other.m_font->cur_sfnt;
}
#ifndef NDEBUG
String FontPlatformData::description() const
{
return "iType Font Data";
}
#endif
HarfBuzzFace* FontPlatformData::harfBuzzFace()
{
if (!m_harfBuzzFace) {
uint64_t uniqueID = reinterpret_cast<uintptr_t>(m_font);
m_harfBuzzFace = HarfBuzzFace::create(const_cast<FontPlatformData*>(this), uniqueID);
}
return m_harfBuzzFace.get();
}
FS_STATE* FontPlatformData::scaledFont(float scale) const
{
ASSERT(scale > 0.0);
if (m_scale == scale && m_scaledFont)
return m_scaledFont;
// This must be an SVG Font. It seems like there is an upstream bug where web and SVG fonts
// are used in one TextRun. Other ports seem to be able to deal with having an SVG Font in
// this path so bail out instead of crash.
if (!m_font)
return 0;
if (m_scaledFont) {
BlackBerry::Platform::Graphics::clearGlyphCacheForFont(m_scaledFont);
if (FS_end_client(m_scaledFont) != SUCCESS)
CRASH();
}
m_scaledFont = FS_new_client(m_font, 0);
if (!applyState(m_scaledFont, scale)) {
if (FS_end_client(m_scaledFont) != SUCCESS)
CRASH();
m_scaledFont = 0;
return 0;
}
m_scale = scale;
return m_scaledFont;
}
void FontPlatformData::setFakeBold(bool fakeBold)
{
m_syntheticBold = fakeBold;
applyState(m_font);
}
void FontPlatformData::setFakeItalic(bool fakeItalic)
{
m_syntheticOblique = fakeItalic;
applyState(m_font);
}
const void* FontPlatformData::platformFontHandle() const
{
ASSERT(m_font);
return m_font->cur_sfnt;
}
bool FontPlatformData::isFixedPitch() const
{
FS_BYTE* postTable;
FS_ULONG length;
if (m_font && (postTable = FS_get_table(m_font, TAG_post, TBL_EXTRACT, &length))) {
bool fixed = reinterpret_cast<TTF_POST*>(postTable)->isFixedPitch;
FS_free_table(m_font, postTable);
return fixed;
}
return false;
}
}
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