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added getGlyphMetrics function.

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rachytski 2010-12-28 00:38:46 +02:00 • committed by Alex Zolotarev
parent 60ad2be527
commit b301b209c1
7 changed files with 111 additions and 25 deletions
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95
yg/glyph_cache.cpp
View file

@ -37,10 +37,12 @@ namespace yg
m_impl->m_fonts.push_back(make_shared_ptr(new Font(fileName)));
}
shared_ptr<GlyphInfo> const GlyphCache::getGlyph(GlyphKey const & key)
int GlyphCache::getCharIDX(GlyphKey const & key)
{
Font * font = m_impl->m_fonts.back().get();
FTC_FaceID faceID = reinterpret_cast<FTC_FaceID>(font);
FTC_ScalerRec fontScaler =
{
faceID,
@ -75,6 +77,67 @@ namespace yg
);
}
return charIDX;
}
GlyphMetrics const GlyphCache::getGlyphMetrics(GlyphKey const & key)
{
Font * font = m_impl->m_fonts.back().get();
FTC_FaceID faceID = reinterpret_cast<FTC_FaceID>(font);
FTC_ScalerRec fontScaler =
{
faceID,
key.m_fontSize,
key.m_fontSize,
1,
0,
0
};
int charIDX = getCharIDX(key);
FT_Glyph glyph = 0;
FTCHECK(FTC_ImageCache_LookupScaler(
m_impl->m_glyphMetricsCache,
&fontScaler,
FT_LOAD_DEFAULT,
charIDX,
&glyph,
0));
FT_BBox cbox;
FT_Glyph_Get_CBox(glyph, FT_GLYPH_BBOX_PIXELS, &cbox);
GlyphMetrics m =
{
glyph->advance.x >> 16,
glyph->advance.y >> 16,
cbox.xMin, cbox.yMin,
cbox.xMax - cbox.xMin, cbox.yMax - cbox.yMin
};
return m;
}
shared_ptr<GlyphInfo> const GlyphCache::getGlyph(GlyphKey const & key)
{
Font * font = m_impl->m_fonts.back().get();
FTC_FaceID faceID = reinterpret_cast<FTC_FaceID>(font);
FTC_ScalerRec fontScaler =
{
faceID,
key.m_fontSize,
key.m_fontSize,
1,
0,
0
};
int charIDX = getCharIDX(key);
FT_Glyph glyph = 0;
//FTC_Node glyphNode;
@ -97,31 +160,37 @@ namespace yg
0
));
/// glyph could appear in cache from getGlyphMetrics method,
/// so we should explicitly check this situation
// if (glyph.format == FT_GLYPH_FORMAT_OUTLINE)
// FTCHECK(FT_Glyph_To_Bitmap(&glyph, FT_RENDER_MODE_NORMAL, 0, 1));
FT_BitmapGlyph bitmapGlyph = (FT_BitmapGlyph)glyph;
shared_ptr<GlyphInfo> info(new GlyphInfo());
info->m_height = bitmapGlyph ? bitmapGlyph->bitmap.rows : 0;
info->m_width = bitmapGlyph ? bitmapGlyph->bitmap.width : 0;
info->m_xOffset = bitmapGlyph ? bitmapGlyph->left : 0;
info->m_yOffset = bitmapGlyph ? bitmapGlyph->top - info->m_height : 0;
info->m_xAdvance = bitmapGlyph ? int(bitmapGlyph->root.advance.x >> 16) : 0;
info->m_metrics.m_height = bitmapGlyph ? bitmapGlyph->bitmap.rows : 0;
info->m_metrics.m_width = bitmapGlyph ? bitmapGlyph->bitmap.width : 0;
info->m_metrics.m_xOffset = bitmapGlyph ? bitmapGlyph->left : 0;
info->m_metrics.m_yOffset = bitmapGlyph ? bitmapGlyph->top - info->m_metrics.m_height : 0;
info->m_metrics.m_xAdvance = bitmapGlyph ? int(bitmapGlyph->root.advance.x >> 16) : 0;
info->m_metrics.m_yAdvance = bitmapGlyph ? int(bitmapGlyph->root.advance.y >> 16) : 0;
info->m_color = key.m_isMask ? yg::Color(255, 255, 255, 0) : yg::Color(0, 0, 0, 0);
if ((info->m_width != 0) && (info->m_height != 0))
if ((info->m_metrics.m_width != 0) && (info->m_metrics.m_height != 0))
{
info->m_bitmap.resize(info->m_width * info->m_height * sizeof(DATA_TRAITS::pixel_t));
info->m_bitmap.resize(info->m_metrics.m_width * info->m_metrics.m_height * sizeof(DATA_TRAITS::pixel_t));
DATA_TRAITS::view_t dstView = gil::interleaved_view(
info->m_width,
info->m_height,
info->m_metrics.m_width,
info->m_metrics.m_height,
(DATA_TRAITS::pixel_t*)&info->m_bitmap[0],
info->m_width * sizeof(DATA_TRAITS::pixel_t)
info->m_metrics.m_width * sizeof(DATA_TRAITS::pixel_t)
);
gil::gray8c_view_t srcView = gil::interleaved_view(
info->m_width,
info->m_height,
info->m_metrics.m_width,
info->m_metrics.m_height,
(gil::gray8_pixel_t*)bitmapGlyph->bitmap.buffer,
bitmapGlyph->bitmap.pitch
);

13
yg/glyph_cache.hpp
View file

@ -5,15 +5,20 @@
namespace yg
{
struct GlyphInfo
struct GlyphMetrics
{
int m_xAdvance;
int m_yAdvance;
int m_xOffset;
int m_yOffset;
int m_width;
int m_height;
yg::Color m_color;
};
struct GlyphInfo
{
GlyphMetrics m_metrics;
yg::Color m_color;
vector<unsigned char> m_bitmap;
void dump(char const * fileName);
@ -44,6 +49,10 @@ namespace yg
void reset();
void addFont(char const * fileName);
int getCharIDX(GlyphKey const & key);
shared_ptr<GlyphInfo> const getGlyph(GlyphKey const & key);
/// return control box(could be slightly larger than the precise bound box).
GlyphMetrics const getGlyphMetrics(GlyphKey const & key);
};
}

1
yg/glyph_cache_impl.cpp
View file

@ -27,6 +27,7 @@ namespace yg
FTCHECK(FTC_Manager_New(m_lib, 3, 10, maxSize, &RequestFace, 0, &m_manager));
FTCHECK(FTC_ImageCache_New(m_manager, &m_normalGlyphCache));
FTCHECK(FTC_ImageCache_New(m_manager, &m_glyphMetricsCache));
/// Initializing stroker
FTCHECK(FT_Stroker_New(m_lib, &m_stroker));

1
yg/glyph_cache_impl.hpp
View file

@ -29,6 +29,7 @@ namespace yg
FTC_Manager m_manager;
FTC_ImageCache m_glyphMetricsCache;
FTC_ImageCache m_strokedGlyphCache;
FTC_ImageCache m_normalGlyphCache;

5
yg/resource_manager.cpp
View file

@ -151,6 +151,11 @@ namespace yg
return m_glyphCache.getGlyph(key);
}
GlyphMetrics const ResourceManager::getGlyphMetrics(GlyphKey const & key)
{
return m_glyphCache.getGlyphMetrics(key);
}
void ResourceManager::addFont(char const * fileName)
{
m_glyphCache.addFont(fileName);

1
yg/resource_manager.hpp
View file

@ -61,6 +61,7 @@ namespace yg
void freeTexture(shared_ptr<gl::BaseTexture> const & texture, bool doSignal = false);
shared_ptr<GlyphInfo> const getGlyph(GlyphKey const & key);
GlyphMetrics const getGlyphMetrics(GlyphKey const & key);
void addFont(char const * fileName);
};

20
yg/skin_page.cpp
View file

@ -178,8 +178,8 @@ namespace yg
shared_ptr<GlyphInfo> gi = m_resourceManager->getGlyph(g);
m2::Packer::handle_t handle = m_packer.pack(gi->m_width + 4,
gi->m_height + 4);
m2::Packer::handle_t handle = m_packer.pack(gi->m_metrics.m_width + 4,
gi->m_metrics.m_height + 4);
m2::RectU texRect = m_packer.find(handle).second;
m_glyphUploadCommands.push_back(GlyphUploadCmd(gi, texRect));
@ -188,9 +188,9 @@ namespace yg
m_styles[handle] = boost::shared_ptr<ResourceStyle>(
new CharStyle(texRect,
m_pageID,
gi->m_xOffset,
gi->m_yOffset,
gi->m_xAdvance));
gi->m_metrics.m_xOffset,
gi->m_metrics.m_yOffset,
gi->m_metrics.m_xAdvance));
return m_glyphMap[g];
}
@ -198,7 +198,7 @@ namespace yg
bool SkinPage::hasRoom(GlyphKey const & gk) const
{
shared_ptr<GlyphInfo> gi = m_resourceManager->getGlyph(gk);
return m_packer.hasRoom(gi->m_width + 4, gi->m_height + 4);
return m_packer.hasRoom(gi->m_metrics.m_width + 4, gi->m_metrics.m_height + 4);
}
@ -379,13 +379,13 @@ namespace yg
v(rect.SizeX() - 1, y) = pxTranslucent;
}
if ((gi->m_width != 0) && (gi->m_height != 0))
if ((gi->m_metrics.m_width != 0) && (gi->m_metrics.m_height != 0))
{
TDynamicTexture::const_view_t srcView = gil::interleaved_view(
gi->m_width,
gi->m_height,
gi->m_metrics.m_width,
gi->m_metrics.m_height,
(TDynamicTexture::pixel_t*)&gi->m_bitmap[0],
gi->m_width * sizeof(TDynamicTexture::pixel_t)
gi->m_metrics.m_width * sizeof(TDynamicTexture::pixel_t)
);
for (size_t y = 2; y < rect.SizeY() - 2; ++y)