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empty glyph image handling.

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rachytski 2010-12-13 23:43:32 +02:00 • committed by Alex Zolotarev
parent 5f60844c51
commit 1c6c119b0e
1 changed files with 27 additions and 23 deletions
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50
yg/glyph_cache.cpp
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@ -153,33 +153,37 @@ namespace yg
info->m_xOffset = bitmapGlyph->left;
info->m_yOffset = bitmapGlyph->top - info->m_height;
info->m_xAdvance = int(bitmapGlyph->root.advance.x >> 16);
info->m_bitmap.resize(info->m_width * info->m_height * 4);
DATA_TRAITS::view_t dstView = gil::interleaved_view(
info->m_width,
info->m_height,
(DATA_TRAITS::pixel_t*)&info->m_bitmap[0],
info->m_width * sizeof(DATA_TRAITS::pixel_t)
);
if ((info->m_width != 0) && (info->m_height != 0))
{
info->m_bitmap.resize(info->m_width * info->m_height * 4);
gil::gray8c_view_t srcView = gil::interleaved_view(
info->m_width,
info->m_height,
(gil::gray8_pixel_t*)bitmapGlyph->bitmap.buffer,
bitmapGlyph->bitmap.pitch
);
DATA_TRAITS::view_t dstView = gil::interleaved_view(
info->m_width,
info->m_height,
(DATA_TRAITS::pixel_t*)&info->m_bitmap[0],
info->m_width * sizeof(DATA_TRAITS::pixel_t)
);
DATA_TRAITS::pixel_t c(key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
0);
gil::gray8c_view_t srcView = gil::interleaved_view(
info->m_width,
info->m_height,
(gil::gray8_pixel_t*)bitmapGlyph->bitmap.buffer,
bitmapGlyph->bitmap.pitch
);
for (size_t y = 0; y < srcView.height(); ++y)
for (size_t x = 0; x < srcView.width(); ++x)
{
gil::at_c<3>(c) = srcView(x, y) / DATA_TRAITS::channelScaleFactor;
dstView(x, y) = c;
}
DATA_TRAITS::pixel_t c(key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
key.m_isMask ? DATA_TRAITS::maxChannelVal : 0,
0);
for (size_t y = 0; y < srcView.height(); ++y)
for (size_t x = 0; x < srcView.width(); ++x)
{
gil::get_color(c, gil::alpha_t()) = srcView(x, y) / DATA_TRAITS::channelScaleFactor;
dstView(x, y) = c;
}
}
FT_Done_Glyph(glyph);