725 lines
18 KiB
C++
725 lines
18 KiB
C++
/*
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* Copyright 2013 Jeremie Roy. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#define USE_EDTAA3 0
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#include <bx/macros.h>
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#if BX_COMPILER_MSVC
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# define generic GenericFromFreeType // WinRT language extensions see "generic" as a keyword... this is stupid
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#endif // BX_COMPILER_MSVC
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BX_PRAGMA_DIAGNOSTIC_PUSH();
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BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4245) // error C4245: '=' : conversion from 'int' to 'FT_UInt', signed/unsigned mismatch
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#if BX_COMPILER_MSVC || BX_COMPILER_GCC >= 40300
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#pragma push_macro("interface")
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#endif
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#undef interface
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#include <freetype/freetype.h>
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#if BX_COMPILER_MSVC || BX_COMPILER_GCC >= 40300
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#pragma pop_macro("interface")
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#endif
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BX_PRAGMA_DIAGNOSTIC_POP();
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#include "../common.h"
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#include <bgfx/bgfx.h>
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#include <math.h>
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#if USE_EDTAA3
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# include <edtaa3/edtaa3func.cpp>
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#else
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# define SDF_IMPLEMENTATION
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# include <sdf/sdf.h>
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#endif // USE_EDTAA3
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#include <wchar.h> // wcslen
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#include <tinystl/allocator.h>
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#include <tinystl/unordered_map.h>
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namespace stl = tinystl;
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#include "font_manager.h"
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#include "../cube_atlas.h"
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struct FTHolder
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{
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FT_Library library;
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FT_Face face;
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};
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class TrueTypeFont
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{
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public:
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TrueTypeFont();
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~TrueTypeFont();
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/// Initialize from an external buffer
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/// @remark The ownership of the buffer is external, and you must ensure it stays valid up to this object lifetime
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/// @return true if the initialization succeed
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bool init(const uint8_t* _buffer, uint32_t _bufferSize, int32_t _fontIndex, uint32_t _pixelHeight);
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/// return the font descriptor of the current font
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FontInfo getFontInfo();
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/// raster a glyph as 8bit alpha to a memory buffer
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/// update the GlyphInfo according to the raster strategy
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/// @ remark buffer min size: glyphInfo.m_width * glyphInfo * height * sizeof(char)
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bool bakeGlyphAlpha(CodePoint _codePoint, GlyphInfo& _outGlyphInfo, uint8_t* _outBuffer);
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/// raster a glyph as 32bit subpixel rgba to a memory buffer
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/// update the GlyphInfo according to the raster strategy
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/// @ remark buffer min size: glyphInfo.m_width * glyphInfo * height * sizeof(uint32_t)
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bool bakeGlyphSubpixel(CodePoint _codePoint, GlyphInfo& _outGlyphInfo, uint8_t* _outBuffer);
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/// raster a glyph as 8bit signed distance to a memory buffer
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/// update the GlyphInfo according to the raster strategy
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/// @ remark buffer min size: glyphInfo.m_width * glyphInfo * height * sizeof(char)
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bool bakeGlyphDistance(CodePoint _codePoint, GlyphInfo& _outGlyphInfo, uint8_t* _outBuffer);
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private:
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FTHolder* m_font;
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};
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TrueTypeFont::TrueTypeFont() : m_font(NULL)
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{
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}
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TrueTypeFont::~TrueTypeFont()
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{
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if (NULL != m_font)
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{
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FT_Done_Face(m_font->face);
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FT_Done_FreeType(m_font->library);
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delete m_font;
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m_font = NULL;
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}
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}
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bool TrueTypeFont::init(const uint8_t* _buffer, uint32_t _bufferSize, int32_t _fontIndex, uint32_t _pixelHeight)
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{
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BX_CHECK(m_font == NULL, "TrueTypeFont already initialized");
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BX_CHECK( (_bufferSize > 256 && _bufferSize < 100000000), "TrueType buffer size is suspicious");
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BX_CHECK( (_pixelHeight > 4 && _pixelHeight < 128), "TrueType buffer size is suspicious");
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FTHolder* holder = new FTHolder;
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FT_Error error = FT_Init_FreeType(&holder->library);
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BX_WARN(!error, "FT_Init_FreeType failed.");
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if (error)
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{
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goto err0;
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}
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error = FT_New_Memory_Face(holder->library, _buffer, _bufferSize, _fontIndex, &holder->face);
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BX_WARN(!error, "FT_Init_FreeType failed.");
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if (error)
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{
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if (FT_Err_Unknown_File_Format == error)
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{
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goto err0;
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}
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goto err1;
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}
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error = FT_Select_Charmap(holder->face, FT_ENCODING_UNICODE);
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BX_WARN(!error, "FT_Init_FreeType failed.");
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if (error)
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{
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goto err2;
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}
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error = FT_Set_Pixel_Sizes(holder->face, 0, _pixelHeight);
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BX_WARN(!error, "FT_Init_FreeType failed.");
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if (error)
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{
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goto err2;
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}
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m_font = holder;
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return true;
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err2:
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FT_Done_Face(holder->face);
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err1:
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FT_Done_FreeType(holder->library);
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err0:
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delete holder;
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return false;
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}
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FontInfo TrueTypeFont::getFontInfo()
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{
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BX_CHECK(m_font != NULL, "TrueTypeFont not initialized");
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BX_CHECK(FT_IS_SCALABLE(m_font->face), "Font is unscalable");
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FT_Size_Metrics metrics = m_font->face->size->metrics;
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FontInfo outFontInfo;
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outFontInfo.scale = 1.0f;
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outFontInfo.ascender = metrics.ascender / 64.0f;
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outFontInfo.descender = metrics.descender / 64.0f;
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outFontInfo.lineGap = (metrics.height - metrics.ascender + metrics.descender) / 64.0f;
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outFontInfo.maxAdvanceWidth = metrics.max_advance/ 64.0f;
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outFontInfo.underlinePosition = FT_MulFix(m_font->face->underline_position, metrics.y_scale) / 64.0f;
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outFontInfo.underlineThickness = FT_MulFix(m_font->face->underline_thickness, metrics.y_scale) / 64.0f;
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return outFontInfo;
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}
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static void glyphInfoInit(GlyphInfo& _glyphInfo, FT_BitmapGlyph _bitmap, FT_GlyphSlot _slot, uint8_t* _dst, uint32_t _bpp)
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{
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int32_t xx = _bitmap->left;
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int32_t yy = -_bitmap->top;
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int32_t ww = _bitmap->bitmap.width;
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int32_t hh = _bitmap->bitmap.rows;
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_glyphInfo.offset_x = (float)xx;
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_glyphInfo.offset_y = (float)yy;
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_glyphInfo.width = (float)ww;
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_glyphInfo.height = (float)hh;
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_glyphInfo.advance_x = (float)_slot->advance.x / 64.0f;
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_glyphInfo.advance_y = (float)_slot->advance.y / 64.0f;
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uint32_t dstPitch = ww * _bpp;
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uint8_t* src = _bitmap->bitmap.buffer;
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uint32_t srcPitch = _bitmap->bitmap.pitch;
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for (int32_t ii = 0; ii < hh; ++ii)
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{
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memcpy(_dst, src, dstPitch);
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_dst += dstPitch;
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src += srcPitch;
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}
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}
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bool TrueTypeFont::bakeGlyphAlpha(CodePoint _codePoint, GlyphInfo& _glyphInfo, uint8_t* _outBuffer)
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{
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BX_CHECK(m_font != NULL, "TrueTypeFont not initialized");
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_glyphInfo.glyphIndex = FT_Get_Char_Index(m_font->face, _codePoint);
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FT_GlyphSlot slot = m_font->face->glyph;
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FT_Error error = FT_Load_Glyph(m_font->face, _glyphInfo.glyphIndex, FT_LOAD_DEFAULT);
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if (error)
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{
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return false;
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}
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FT_Glyph glyph;
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error = FT_Get_Glyph(slot, &glyph);
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if (error)
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{
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return false;
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}
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error = FT_Glyph_To_Bitmap(&glyph, FT_RENDER_MODE_NORMAL, 0, 1);
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if (error)
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{
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return false;
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}
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FT_BitmapGlyph bitmap = (FT_BitmapGlyph)glyph;
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glyphInfoInit(_glyphInfo, bitmap, slot, _outBuffer, 1);
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FT_Done_Glyph(glyph);
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return true;
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}
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bool TrueTypeFont::bakeGlyphSubpixel(CodePoint _codePoint, GlyphInfo& _glyphInfo, uint8_t* _outBuffer)
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{
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BX_CHECK(m_font != NULL, "TrueTypeFont not initialized");
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_glyphInfo.glyphIndex = FT_Get_Char_Index(m_font->face, _codePoint);
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FT_GlyphSlot slot = m_font->face->glyph;
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FT_Error error = FT_Load_Glyph(m_font->face, _glyphInfo.glyphIndex, FT_LOAD_DEFAULT);
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if (error)
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{
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return false;
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}
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FT_Glyph glyph;
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error = FT_Get_Glyph(slot, &glyph);
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if (error)
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{
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return false;
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}
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error = FT_Glyph_To_Bitmap(&glyph, FT_RENDER_MODE_LCD, 0, 1);
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if (error)
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{
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return false;
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}
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FT_BitmapGlyph bitmap = (FT_BitmapGlyph)glyph;
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glyphInfoInit(_glyphInfo, bitmap, slot, _outBuffer, 3);
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FT_Done_Glyph(glyph);
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return true;
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}
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static void makeDistanceMap(const uint8_t* _img, uint8_t* _outImg, uint32_t _width, uint32_t _height)
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{
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#if USE_EDTAA3
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int16_t* xdist = (int16_t*)malloc(_width * _height * sizeof(int16_t) );
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int16_t* ydist = (int16_t*)malloc(_width * _height * sizeof(int16_t) );
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double* gx = (double*)calloc(_width * _height, sizeof(double) );
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double* gy = (double*)calloc(_width * _height, sizeof(double) );
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double* data = (double*)calloc(_width * _height, sizeof(double) );
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double* outside = (double*)calloc(_width * _height, sizeof(double) );
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double* inside = (double*)calloc(_width * _height, sizeof(double) );
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uint32_t ii;
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// Convert img into double (data)
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double img_min = 255, img_max = -255;
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for (ii = 0; ii < _width * _height; ++ii)
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{
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double v = _img[ii];
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data[ii] = v;
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if (v > img_max)
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{
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img_max = v;
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}
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if (v < img_min)
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{
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img_min = v;
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}
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}
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// Rescale image levels between 0 and 1
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for (ii = 0; ii < _width * _height; ++ii)
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{
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data[ii] = (_img[ii] - img_min) / (img_max - img_min);
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}
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// Compute outside = edtaa3(bitmap); % Transform background (0's)
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computegradient(data, _width, _height, gx, gy);
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edtaa3(data, gx, gy, _width, _height, xdist, ydist, outside);
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for (ii = 0; ii < _width * _height; ++ii)
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{
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if (outside[ii] < 0)
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{
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outside[ii] = 0.0;
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}
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}
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// Compute inside = edtaa3(1-bitmap); % Transform foreground (1's)
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memset(gx, 0, sizeof(double) * _width * _height);
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memset(gy, 0, sizeof(double) * _width * _height);
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for (ii = 0; ii < _width * _height; ++ii)
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{
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data[ii] = 1.0 - data[ii];
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}
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computegradient(data, _width, _height, gx, gy);
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edtaa3(data, gx, gy, _width, _height, xdist, ydist, inside);
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for (ii = 0; ii < _width * _height; ++ii)
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{
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if (inside[ii] < 0)
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{
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inside[ii] = 0.0;
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}
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}
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// distmap = outside - inside; % Bipolar distance field
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uint8_t* out = _outImg;
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for (ii = 0; ii < _width * _height; ++ii)
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{
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outside[ii] -= inside[ii];
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outside[ii] = 128 + outside[ii] * 16;
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if (outside[ii] < 0)
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{
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outside[ii] = 0;
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}
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if (outside[ii] > 255)
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{
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outside[ii] = 255;
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}
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out[ii] = 255 - (uint8_t) outside[ii];
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}
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free(xdist);
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free(ydist);
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free(gx);
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free(gy);
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free(data);
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free(outside);
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free(inside);
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#else
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sdfBuild(_outImg, _width, 8.0f, _img, _width, _height, _width);
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#endif // USE_EDTAA3
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}
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bool TrueTypeFont::bakeGlyphDistance(CodePoint _codePoint, GlyphInfo& _glyphInfo, uint8_t* _outBuffer)
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{
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BX_CHECK(m_font != NULL, "TrueTypeFont not initialized");
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_glyphInfo.glyphIndex = FT_Get_Char_Index(m_font->face, _codePoint);
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FT_Int32 loadMode = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
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FT_Render_Mode renderMode = FT_RENDER_MODE_NORMAL;
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FT_GlyphSlot slot = m_font->face->glyph;
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FT_Error error = FT_Load_Glyph(m_font->face, _glyphInfo.glyphIndex, loadMode);
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if (error)
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{
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return false;
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}
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FT_Glyph glyph;
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error = FT_Get_Glyph(slot, &glyph);
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if (error)
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{
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return false;
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}
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error = FT_Glyph_To_Bitmap(&glyph, renderMode, 0, 1);
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if (error)
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{
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return false;
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}
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FT_BitmapGlyph bitmap = (FT_BitmapGlyph)glyph;
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int32_t ww = bitmap->bitmap.width;
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int32_t hh = bitmap->bitmap.rows;
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glyphInfoInit(_glyphInfo, bitmap, slot, _outBuffer, 1);
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FT_Done_Glyph(glyph);
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if (ww * hh > 0)
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{
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uint32_t dw = 6;
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uint32_t dh = 6;
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uint32_t nw = ww + dw * 2;
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uint32_t nh = hh + dh * 2;
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BX_CHECK(nw * nh < 128 * 128, "Buffer overflow (size %d)", nw * nh);
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uint32_t buffSize = nw * nh * sizeof(uint8_t);
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uint8_t* alphaImg = (uint8_t*)malloc(buffSize);
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memset(alphaImg, 0, nw * nh * sizeof(uint8_t) );
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//copy the original buffer to the temp one
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for (uint32_t ii = dh; ii < nh - dh; ++ii)
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{
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memcpy(alphaImg + ii * nw + dw, _outBuffer + (ii - dh) * ww, ww);
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}
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makeDistanceMap(alphaImg, _outBuffer, nw, nh);
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free(alphaImg);
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_glyphInfo.offset_x -= (float)dw;
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_glyphInfo.offset_y -= (float)dh;
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_glyphInfo.width = (float)nw;
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_glyphInfo.height = (float)nh;
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}
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return true;
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}
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typedef stl::unordered_map<CodePoint, GlyphInfo> GlyphHashMap;
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// cache font data
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struct FontManager::CachedFont
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{
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CachedFont()
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: trueTypeFont(NULL)
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{
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masterFontHandle.idx = bx::HandleAlloc::invalid;
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}
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FontInfo fontInfo;
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GlyphHashMap cachedGlyphs;
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TrueTypeFont* trueTypeFont;
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// an handle to a master font in case of sub distance field font
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FontHandle masterFontHandle;
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int16_t padding;
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};
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#define MAX_FONT_BUFFER_SIZE (512 * 512 * 4)
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FontManager::FontManager(Atlas* _atlas)
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: m_ownAtlas(false)
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, m_atlas(_atlas)
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{
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init();
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}
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FontManager::FontManager(uint16_t _textureSideWidth)
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: m_ownAtlas(true)
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, m_atlas(new Atlas(_textureSideWidth) )
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{
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init();
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}
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void FontManager::init()
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{
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m_cachedFiles = new CachedFile[MAX_OPENED_FILES];
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m_cachedFonts = new CachedFont[MAX_OPENED_FONT];
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m_buffer = new uint8_t[MAX_FONT_BUFFER_SIZE];
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const uint32_t W = 3;
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// Create filler rectangle
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uint8_t buffer[W * W * 4];
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memset(buffer, 255, W * W * 4);
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m_blackGlyph.width = W;
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m_blackGlyph.height = W;
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///make sure the black glyph doesn't bleed by using a one pixel inner outline
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m_blackGlyph.regionIndex = m_atlas->addRegion(W, W, buffer, AtlasRegion::TYPE_GRAY, 1);
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}
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FontManager::~FontManager()
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{
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BX_CHECK(m_fontHandles.getNumHandles() == 0, "All the fonts must be destroyed before destroying the manager");
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delete [] m_cachedFonts;
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BX_CHECK(m_filesHandles.getNumHandles() == 0, "All the font files must be destroyed before destroying the manager");
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delete [] m_cachedFiles;
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delete [] m_buffer;
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if (m_ownAtlas)
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{
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delete m_atlas;
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}
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}
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TrueTypeHandle FontManager::createTtf(const uint8_t* _buffer, uint32_t _size)
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{
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uint16_t id = m_filesHandles.alloc();
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BX_CHECK(id != bx::HandleAlloc::invalid, "Invalid handle used");
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m_cachedFiles[id].buffer = new uint8_t[_size];
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m_cachedFiles[id].bufferSize = _size;
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memcpy(m_cachedFiles[id].buffer, _buffer, _size);
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TrueTypeHandle ret = { id };
|
|
return ret;
|
|
}
|
|
|
|
void FontManager::destroyTtf(TrueTypeHandle _handle)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
delete m_cachedFiles[_handle.idx].buffer;
|
|
m_cachedFiles[_handle.idx].bufferSize = 0;
|
|
m_cachedFiles[_handle.idx].buffer = NULL;
|
|
m_filesHandles.free(_handle.idx);
|
|
}
|
|
|
|
FontHandle FontManager::createFontByPixelSize(TrueTypeHandle _ttfHandle, uint32_t _typefaceIndex, uint32_t _pixelSize, uint32_t _fontType)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_ttfHandle), "Invalid handle used");
|
|
|
|
TrueTypeFont* ttf = new TrueTypeFont();
|
|
if (!ttf->init(m_cachedFiles[_ttfHandle.idx].buffer, m_cachedFiles[_ttfHandle.idx].bufferSize, _typefaceIndex, _pixelSize) )
|
|
{
|
|
delete ttf;
|
|
FontHandle invalid = { bx::HandleAlloc::invalid };
|
|
return invalid;
|
|
}
|
|
|
|
uint16_t fontIdx = m_fontHandles.alloc();
|
|
BX_CHECK(fontIdx != bx::HandleAlloc::invalid, "Invalid handle used");
|
|
|
|
CachedFont& font = m_cachedFonts[fontIdx];
|
|
font.trueTypeFont = ttf;
|
|
font.fontInfo = ttf->getFontInfo();
|
|
font.fontInfo.fontType = int16_t(_fontType);
|
|
font.fontInfo.pixelSize = uint16_t(_pixelSize);
|
|
font.cachedGlyphs.clear();
|
|
font.masterFontHandle.idx = bx::HandleAlloc::invalid;
|
|
|
|
FontHandle handle = { fontIdx };
|
|
return handle;
|
|
}
|
|
|
|
FontHandle FontManager::createScaledFontToPixelSize(FontHandle _baseFontHandle, uint32_t _pixelSize)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_baseFontHandle), "Invalid handle used");
|
|
CachedFont& baseFont = m_cachedFonts[_baseFontHandle.idx];
|
|
FontInfo& fontInfo = baseFont.fontInfo;
|
|
|
|
FontInfo newFontInfo = fontInfo;
|
|
newFontInfo.pixelSize = uint16_t(_pixelSize);
|
|
newFontInfo.scale = (float)_pixelSize / (float) fontInfo.pixelSize;
|
|
newFontInfo.ascender = (newFontInfo.ascender * newFontInfo.scale);
|
|
newFontInfo.descender = (newFontInfo.descender * newFontInfo.scale);
|
|
newFontInfo.lineGap = (newFontInfo.lineGap * newFontInfo.scale);
|
|
newFontInfo.maxAdvanceWidth = (newFontInfo.maxAdvanceWidth * newFontInfo.scale);
|
|
newFontInfo.underlineThickness = (newFontInfo.underlineThickness * newFontInfo.scale);
|
|
newFontInfo.underlinePosition = (newFontInfo.underlinePosition * newFontInfo.scale);
|
|
|
|
uint16_t fontIdx = m_fontHandles.alloc();
|
|
BX_CHECK(fontIdx != bx::HandleAlloc::invalid, "Invalid handle used");
|
|
|
|
CachedFont& font = m_cachedFonts[fontIdx];
|
|
font.cachedGlyphs.clear();
|
|
font.fontInfo = newFontInfo;
|
|
font.trueTypeFont = NULL;
|
|
font.masterFontHandle = _baseFontHandle;
|
|
|
|
FontHandle handle = { fontIdx };
|
|
return handle;
|
|
}
|
|
|
|
void FontManager::destroyFont(FontHandle _handle)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
|
|
CachedFont& font = m_cachedFonts[_handle.idx];
|
|
|
|
if (font.trueTypeFont != NULL)
|
|
{
|
|
delete font.trueTypeFont;
|
|
font.trueTypeFont = NULL;
|
|
}
|
|
|
|
font.cachedGlyphs.clear();
|
|
m_fontHandles.free(_handle.idx);
|
|
}
|
|
|
|
bool FontManager::preloadGlyph(FontHandle _handle, const wchar_t* _string)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
CachedFont& font = m_cachedFonts[_handle.idx];
|
|
|
|
if (NULL == font.trueTypeFont)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
for (uint32_t ii = 0, end = (uint32_t)wcslen(_string); ii < end; ++ii)
|
|
{
|
|
CodePoint codePoint = _string[ii];
|
|
if (!preloadGlyph(_handle, codePoint) )
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool FontManager::preloadGlyph(FontHandle _handle, CodePoint _codePoint)
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
CachedFont& font = m_cachedFonts[_handle.idx];
|
|
FontInfo& fontInfo = font.fontInfo;
|
|
|
|
GlyphHashMap::iterator iter = font.cachedGlyphs.find(_codePoint);
|
|
if (iter != font.cachedGlyphs.end() )
|
|
{
|
|
return true;
|
|
}
|
|
|
|
if (NULL != font.trueTypeFont)
|
|
{
|
|
GlyphInfo glyphInfo;
|
|
|
|
switch (font.fontInfo.fontType)
|
|
{
|
|
case FONT_TYPE_ALPHA:
|
|
font.trueTypeFont->bakeGlyphAlpha(_codePoint, glyphInfo, m_buffer);
|
|
break;
|
|
|
|
case FONT_TYPE_DISTANCE:
|
|
font.trueTypeFont->bakeGlyphDistance(_codePoint, glyphInfo, m_buffer);
|
|
break;
|
|
|
|
case FONT_TYPE_DISTANCE_SUBPIXEL:
|
|
font.trueTypeFont->bakeGlyphDistance(_codePoint, glyphInfo, m_buffer);
|
|
break;
|
|
|
|
default:
|
|
BX_CHECK(false, "TextureType not supported yet");
|
|
}
|
|
|
|
if (!addBitmap(glyphInfo, m_buffer) )
|
|
{
|
|
return false;
|
|
}
|
|
|
|
glyphInfo.advance_x = (glyphInfo.advance_x * fontInfo.scale);
|
|
glyphInfo.advance_y = (glyphInfo.advance_y * fontInfo.scale);
|
|
glyphInfo.offset_x = (glyphInfo.offset_x * fontInfo.scale);
|
|
glyphInfo.offset_y = (glyphInfo.offset_y * fontInfo.scale);
|
|
glyphInfo.height = (glyphInfo.height * fontInfo.scale);
|
|
glyphInfo.width = (glyphInfo.width * fontInfo.scale);
|
|
|
|
font.cachedGlyphs[_codePoint] = glyphInfo;
|
|
return true;
|
|
}
|
|
|
|
if (isValid(font.masterFontHandle)
|
|
&& preloadGlyph(font.masterFontHandle, _codePoint) )
|
|
{
|
|
const GlyphInfo* glyph = getGlyphInfo(font.masterFontHandle, _codePoint);
|
|
|
|
GlyphInfo glyphInfo = *glyph;
|
|
glyphInfo.advance_x = (glyphInfo.advance_x * fontInfo.scale);
|
|
glyphInfo.advance_y = (glyphInfo.advance_y * fontInfo.scale);
|
|
glyphInfo.offset_x = (glyphInfo.offset_x * fontInfo.scale);
|
|
glyphInfo.offset_y = (glyphInfo.offset_y * fontInfo.scale);
|
|
glyphInfo.height = (glyphInfo.height * fontInfo.scale);
|
|
glyphInfo.width = (glyphInfo.width * fontInfo.scale);
|
|
|
|
font.cachedGlyphs[_codePoint] = glyphInfo;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
const FontInfo& FontManager::getFontInfo(FontHandle _handle) const
|
|
{
|
|
BX_CHECK(bgfx::isValid(_handle), "Invalid handle used");
|
|
return m_cachedFonts[_handle.idx].fontInfo;
|
|
}
|
|
|
|
const GlyphInfo* FontManager::getGlyphInfo(FontHandle _handle, CodePoint _codePoint)
|
|
{
|
|
const GlyphHashMap& cachedGlyphs = m_cachedFonts[_handle.idx].cachedGlyphs;
|
|
GlyphHashMap::const_iterator it = cachedGlyphs.find(_codePoint);
|
|
|
|
if (it == cachedGlyphs.end() )
|
|
{
|
|
if (!preloadGlyph(_handle, _codePoint) )
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
it = cachedGlyphs.find(_codePoint);
|
|
}
|
|
|
|
BX_CHECK(it != cachedGlyphs.end(), "Failed to preload glyph.");
|
|
return &it->second;
|
|
}
|
|
|
|
bool FontManager::addBitmap(GlyphInfo& _glyphInfo, const uint8_t* _data)
|
|
{
|
|
_glyphInfo.regionIndex = m_atlas->addRegion( (uint16_t) ceil(_glyphInfo.width), (uint16_t) ceil(_glyphInfo.height), _data, AtlasRegion::TYPE_GRAY);
|
|
return true;
|
|
}
|