//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // AGG 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- #include <stdio.h> #include "agg_font_win32_tt.h" #include "agg_bitset_iterator.h" #include "agg_renderer_scanline.h" #ifdef AGG_WIN9X_COMPLIANT #define GetGlyphOutlineX GetGlyphOutline #else #define GetGlyphOutlineX GetGlyphOutlineW #endif namespace agg { //------------------------------------------------------------------------------ // // This code implements the AUTODIN II polynomial // The variable corresponding to the macro argument "crc" should // be an unsigned long. // Oroginal code by Spencer Garrett <srg@quick.com> // // generated using the AUTODIN II polynomial // x^32 + x^26 + x^23 + x^22 + x^16 + // x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1 // //------------------------------------------------------------------------------ static const unsigned crc32tab[256] = { 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d, }; //------------------------------------------------------------------------------ static unsigned calc_crc32(const unsigned char* buf, unsigned size) { unsigned crc = (unsigned)~0; const unsigned char* p; unsigned len = 0; unsigned nr = size; for (len += nr, p = buf; nr--; ++p) { crc = (crc >> 8) ^ crc32tab[(crc ^ *p) & 0xff]; } return ~crc; } //------------------------------------------------------------------------ static inline FIXED dbl_to_fx(double d) { int l; l = int(d * 65536.0); return *(FIXED*)&l; } //------------------------------------------------------------------------ static inline int dbl_to_plain_fx(double d) { return int(d * 65536.0); } //------------------------------------------------------------------------ static inline FIXED negate_fx(const FIXED& fx) { int l = -(*(int*)(&fx)); return *(FIXED*)&l; } //------------------------------------------------------------------------ static inline double fx_to_dbl(const FIXED& p) { return double(p.value) + double(p.fract) * (1.0 / 65536.0); } //------------------------------------------------------------------------ static inline int fx_to_plain_int(const FIXED& fx) { return *(int*)(&fx); } //------------------------------------------------------------------------ static inline int fx_to_int26p6(const FIXED& p) { return (int(p.value) << 6) + (int(p.fract) >> 10); } //------------------------------------------------------------------------ static inline int dbl_to_int26p6(double p) { return int(p * 64.0 + 0.5); } //------------------------------------------------------------------------ template<class Scanline, class ScanlineStorage> void decompose_win32_glyph_bitmap_mono(const char* gbuf, int w, int h, int x, int y, bool flip_y, Scanline& sl, ScanlineStorage& storage) { int i; int pitch = ((w + 31) >> 5) << 2; const int8u* buf = (const int8u*)gbuf; sl.reset(x, x + w); storage.prepare(); if(flip_y) { buf += pitch * (h - 1); y += h; pitch = -pitch; } for(i = 0; i < h; i++) { sl.reset_spans(); bitset_iterator bits(buf, 0); int j; for(j = 0; j < w; j++) { if(bits.bit()) sl.add_cell(x + j, cover_full); ++bits; } buf += pitch; if(sl.num_spans()) { sl.finalize(y - i - 1); storage.render(sl); } } } //------------------------------------------------------------------------ template<class Rasterizer, class Scanline, class ScanlineStorage> void decompose_win32_glyph_bitmap_gray8(const char* gbuf, int w, int h, int x, int y, bool flip_y, Rasterizer& ras, Scanline& sl, ScanlineStorage& storage) { int i, j; int pitch = ((w + 3) >> 2) << 2; const int8u* buf = (const int8u*)gbuf; sl.reset(x, x + w); storage.prepare(); if(flip_y) { buf += pitch * (h - 1); y += h; pitch = -pitch; } for(i = 0; i < h; i++) { sl.reset_spans(); const int8u* p = buf; for(j = 0; j < w; j++) { if(*p) { unsigned v = *p; if(v == 64) v = 255; else v <<= 2; sl.add_cell(x + j, ras.apply_gamma(v)); } ++p; } buf += pitch; if(sl.num_spans()) { sl.finalize(y - i - 1); storage.render(sl); } } } //------------------------------------------------------------------------ template<class PathStorage> bool decompose_win32_glyph_outline(const char* gbuf, unsigned total_size, bool flip_y, const trans_affine& mtx, PathStorage& path) { const char* cur_glyph = gbuf; const char* end_glyph = gbuf + total_size; double x, y; typedef typename PathStorage::value_type value_type; while(cur_glyph < end_glyph) { const TTPOLYGONHEADER* th = (TTPOLYGONHEADER*)cur_glyph; const char* end_poly = cur_glyph + th->cb; const char* cur_poly = cur_glyph + sizeof(TTPOLYGONHEADER); x = fx_to_dbl(th->pfxStart.x); y = fx_to_dbl(th->pfxStart.y); if(flip_y) y = -y; mtx.transform(&x, &y); path.move_to(value_type(dbl_to_int26p6(x)), value_type(dbl_to_int26p6(y))); while(cur_poly < end_poly) { const TTPOLYCURVE* pc = (const TTPOLYCURVE*)cur_poly; if (pc->wType == TT_PRIM_LINE) { int i; for (i = 0; i < pc->cpfx; i++) { x = fx_to_dbl(pc->apfx[i].x); y = fx_to_dbl(pc->apfx[i].y); if(flip_y) y = -y; mtx.transform(&x, &y); path.line_to(value_type(dbl_to_int26p6(x)), value_type(dbl_to_int26p6(y))); } } if (pc->wType == TT_PRIM_QSPLINE) { int u; for (u = 0; u < pc->cpfx - 1; u++) // Walk through points in spline { POINTFX pnt_b = pc->apfx[u]; // B is always the current point POINTFX pnt_c = pc->apfx[u+1]; if (u < pc->cpfx - 2) // If not on last spline, compute C { // midpoint (x,y) *(int*)&pnt_c.x = (*(int*)&pnt_b.x + *(int*)&pnt_c.x) / 2; *(int*)&pnt_c.y = (*(int*)&pnt_b.y + *(int*)&pnt_c.y) / 2; } double x2, y2; x = fx_to_dbl(pnt_b.x); y = fx_to_dbl(pnt_b.y); x2 = fx_to_dbl(pnt_c.x); y2 = fx_to_dbl(pnt_c.y); if(flip_y) { y = -y; y2 = -y2; } mtx.transform(&x, &y); mtx.transform(&x2, &y2); path.curve3(value_type(dbl_to_int26p6(x)), value_type(dbl_to_int26p6(y)), value_type(dbl_to_int26p6(x2)), value_type(dbl_to_int26p6(y2))); } } cur_poly += sizeof(WORD) * 2 + sizeof(POINTFX) * pc->cpfx; } cur_glyph += th->cb; } return true; } //------------------------------------------------------------------------ font_engine_win32_tt_base::~font_engine_win32_tt_base() { delete [] m_kerning_pairs; delete [] m_gbuf; delete [] m_signature; delete [] m_typeface; if(m_dc && m_old_font) ::SelectObject(m_dc, m_old_font); unsigned i; for(i = 0; i < m_num_fonts; ++i) { delete [] m_font_names[i]; ::DeleteObject(m_fonts[i]); } delete [] m_font_names; delete [] m_fonts; } //------------------------------------------------------------------------ font_engine_win32_tt_base::font_engine_win32_tt_base(bool flag32, HDC dc, unsigned max_fonts) : m_flag32(flag32), m_dc(dc), m_old_font(m_dc ? (HFONT)::GetCurrentObject(m_dc, OBJ_FONT) : 0), m_fonts(new HFONT [max_fonts]), m_num_fonts(0), m_max_fonts(max_fonts), m_font_names(new char* [max_fonts]), m_cur_font(0), m_change_stamp(0), m_typeface(new char [256-16]), m_typeface_len(256-16-1), m_signature(new char [256+256-16]), m_height(0), m_width(0), m_weight(FW_REGULAR), m_italic(false), m_char_set(DEFAULT_CHARSET), m_pitch_and_family(FF_DONTCARE), m_hinting(true), m_flip_y(false), m_font_created(false), m_resolution(0), m_glyph_rendering(glyph_ren_native_gray8), m_glyph_index(0), m_data_size(0), m_data_type(glyph_data_invalid), m_bounds(1,1,0,0), m_advance_x(0.0), m_advance_y(0.0), m_gbuf(new char [buf_size]), m_kerning_pairs(0), m_num_kerning_pairs(0), m_max_kerning_pairs(0), m_path16(), m_path32(), m_curves16(m_path16), m_curves32(m_path32), m_scanline_aa(), m_scanline_bin(), m_scanlines_aa(), m_scanlines_bin(), m_rasterizer() { m_curves16.approximation_scale(4.0); m_curves32.approximation_scale(4.0); memset(&m_matrix, 0, sizeof(m_matrix)); m_matrix.eM11.value = 1; m_matrix.eM22.value = 1; } //------------------------------------------------------------------------ int font_engine_win32_tt_base::find_font(const char* name) const { unsigned i; for(i = 0; i < m_num_fonts; ++i) { if(strcmp(name, m_font_names[i]) == 0) return i; } return -1; } //------------------------------------------------------------------------ bool font_engine_win32_tt_base::create_font(const char* typeface_, glyph_rendering ren_type) { if(m_dc) { unsigned len = strlen(typeface_); if(len > m_typeface_len) { delete [] m_signature; delete [] m_typeface; m_typeface = new char [len + 32]; m_signature = new char [len + 32 + 256]; m_typeface_len = len + 32 - 1; } strcpy(m_typeface, typeface_); int h = m_height; int w = m_width; if(m_resolution) { h = ::MulDiv(m_height, m_resolution, 72); w = ::MulDiv(m_width, m_resolution, 72); } m_glyph_rendering = ren_type; update_signature(); int idx = find_font(m_signature); if(idx >= 0) { m_cur_font = m_fonts[idx]; ::SelectObject(m_dc, m_cur_font); m_num_kerning_pairs = 0; return true; } else { m_cur_font = ::CreateFont(-h, // height of font w, // average character width 0, // angle of escapement 0, // base-line orientation angle m_weight, // font weight m_italic, // italic attribute option 0, // underline attribute option 0, // strikeout attribute option m_char_set, // character set identifier OUT_DEFAULT_PRECIS, // output precision CLIP_DEFAULT_PRECIS, // clipping precision ANTIALIASED_QUALITY, // output quality m_pitch_and_family, // pitch and family m_typeface); // typeface name if(m_cur_font) { if(m_num_fonts >= m_max_fonts) { delete [] m_font_names[0]; if(m_old_font) ::SelectObject(m_dc, m_old_font); ::DeleteObject(m_fonts[0]); memcpy(m_fonts, m_fonts + 1, (m_max_fonts - 1) * sizeof(HFONT)); memcpy(m_font_names, m_font_names + 1, (m_max_fonts - 1) * sizeof(char*)); m_num_fonts = m_max_fonts - 1; } update_signature(); m_font_names[m_num_fonts] = new char[strlen(m_signature) + 1]; strcpy(m_font_names[m_num_fonts], m_signature); m_fonts[m_num_fonts] = m_cur_font; ++m_num_fonts; ::SelectObject(m_dc, m_cur_font); m_num_kerning_pairs = 0; return true; } } } return false; } //------------------------------------------------------------------------ bool font_engine_win32_tt_base::create_font(const char* typeface_, glyph_rendering ren_type, double height_, double width_, int weight_, bool italic_, DWORD char_set_, DWORD pitch_and_family_) { height(height_); width(width_); weight(weight_); italic(italic_); char_set(char_set_); pitch_and_family(pitch_and_family_); return create_font(typeface_, ren_type); } //------------------------------------------------------------------------ void font_engine_win32_tt_base::update_signature() { m_signature[0] = 0; if(m_dc && m_cur_font) { unsigned gamma_hash = 0; if(m_glyph_rendering == glyph_ren_native_gray8 || m_glyph_rendering == glyph_ren_agg_mono || m_glyph_rendering == glyph_ren_agg_gray8) { unsigned char gamma_table[rasterizer_scanline_aa<>::aa_scale]; unsigned i; for(i = 0; i < rasterizer_scanline_aa<>::aa_scale; ++i) { gamma_table[i] = m_rasterizer.apply_gamma(i); } gamma_hash = calc_crc32(gamma_table, sizeof(gamma_table)); } sprintf(m_signature, "%s,%u,%d,%d:%dx%d,%d,%d,%d,%d,%d,%08X", m_typeface, m_char_set, int(m_glyph_rendering), m_resolution, m_height, m_width, m_weight, int(m_italic), int(m_hinting), int(m_flip_y), int(m_pitch_and_family), gamma_hash); if(m_glyph_rendering == glyph_ren_outline || m_glyph_rendering == glyph_ren_agg_mono || m_glyph_rendering == glyph_ren_agg_gray8) { double mtx[6]; char buf[100]; m_affine.store_to(mtx); sprintf(buf, ",%08X%08X%08X%08X%08X%08X", dbl_to_plain_fx(mtx[0]), dbl_to_plain_fx(mtx[1]), dbl_to_plain_fx(mtx[2]), dbl_to_plain_fx(mtx[3]), dbl_to_plain_fx(mtx[4]), dbl_to_plain_fx(mtx[5])); strcat(m_signature, buf); } ++m_change_stamp; } } //------------------------------------------------------------------------ bool font_engine_win32_tt_base::prepare_glyph(unsigned glyph_code) { if(m_dc && m_cur_font) { int format = GGO_BITMAP; switch(m_glyph_rendering) { case glyph_ren_native_gray8: format = GGO_GRAY8_BITMAP; break; case glyph_ren_outline: case glyph_ren_agg_mono: case glyph_ren_agg_gray8: format = GGO_NATIVE; break; } #ifndef GGO_UNHINTED // For compatibility with old SDKs. #define GGO_UNHINTED 0x0100 #endif if(!m_hinting) format |= GGO_UNHINTED; GLYPHMETRICS gm; int total_size = GetGlyphOutlineX(m_dc, glyph_code, format, &gm, buf_size, (void*)m_gbuf, &m_matrix); if(total_size < 0) { // GetGlyphOutline() fails when being called for // GGO_GRAY8_BITMAP and white space (stupid Microsoft). // It doesn't even initialize the glyph metrics // structure. So, we have to query the metrics // separately (basically we need gmCellIncX). int total_size = GetGlyphOutlineX(m_dc, glyph_code, GGO_METRICS, &gm, buf_size, (void*)m_gbuf, &m_matrix); if(total_size < 0) return false; gm.gmBlackBoxX = gm.gmBlackBoxY = 0; total_size = 0; } m_glyph_index = glyph_code; m_advance_x = gm.gmCellIncX; m_advance_y = -gm.gmCellIncY; switch(m_glyph_rendering) { case glyph_ren_native_mono: decompose_win32_glyph_bitmap_mono(m_gbuf, gm.gmBlackBoxX, gm.gmBlackBoxY, gm.gmptGlyphOrigin.x, m_flip_y ? -gm.gmptGlyphOrigin.y : gm.gmptGlyphOrigin.y, m_flip_y, m_scanline_bin, m_scanlines_bin); m_bounds.x1 = m_scanlines_bin.min_x(); m_bounds.y1 = m_scanlines_bin.min_y(); m_bounds.x2 = m_scanlines_bin.max_x() + 1; m_bounds.y2 = m_scanlines_bin.max_y() + 1; m_data_size = m_scanlines_bin.byte_size(); m_data_type = glyph_data_mono; return true; case glyph_ren_native_gray8: decompose_win32_glyph_bitmap_gray8(m_gbuf, gm.gmBlackBoxX, gm.gmBlackBoxY, gm.gmptGlyphOrigin.x, m_flip_y ? -gm.gmptGlyphOrigin.y : gm.gmptGlyphOrigin.y, m_flip_y, m_rasterizer, m_scanline_aa, m_scanlines_aa); m_bounds.x1 = m_scanlines_aa.min_x(); m_bounds.y1 = m_scanlines_aa.min_y(); m_bounds.x2 = m_scanlines_aa.max_x() + 1; m_bounds.y2 = m_scanlines_aa.max_y() + 1; m_data_size = m_scanlines_aa.byte_size(); m_data_type = glyph_data_gray8; return true; case glyph_ren_outline: m_affine.transform(&m_advance_x, &m_advance_y); if(m_flag32) { m_path32.remove_all(); if(decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path32)) { rect_d bnd = m_path32.bounding_rect(); m_data_size = m_path32.byte_size(); m_data_type = glyph_data_outline; m_bounds.x1 = int(floor(bnd.x1)); m_bounds.y1 = int(floor(bnd.y1)); m_bounds.x2 = int(ceil(bnd.x2)); m_bounds.y2 = int(ceil(bnd.y2)); return true; } } else { m_path16.remove_all(); if(decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path16)) { rect_d bnd = m_path16.bounding_rect(); m_data_size = m_path16.byte_size(); m_data_type = glyph_data_outline; m_bounds.x1 = int(floor(bnd.x1)); m_bounds.y1 = int(floor(bnd.y1)); m_bounds.x2 = int(ceil(bnd.x2)); m_bounds.y2 = int(ceil(bnd.y2)); return true; } } break; case glyph_ren_agg_mono: m_rasterizer.reset(); m_affine.transform(&m_advance_x, &m_advance_y); if(m_flag32) { m_path32.remove_all(); decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path32); m_rasterizer.add_path(m_curves32); } else { m_path16.remove_all(); decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path16); m_rasterizer.add_path(m_curves16); } m_scanlines_bin.prepare(); // Remove all render_scanlines(m_rasterizer, m_scanline_bin, m_scanlines_bin); m_bounds.x1 = m_scanlines_bin.min_x(); m_bounds.y1 = m_scanlines_bin.min_y(); m_bounds.x2 = m_scanlines_bin.max_x() + 1; m_bounds.y2 = m_scanlines_bin.max_y() + 1; m_data_size = m_scanlines_bin.byte_size(); m_data_type = glyph_data_mono; return true; case glyph_ren_agg_gray8: m_rasterizer.reset(); m_affine.transform(&m_advance_x, &m_advance_y); if(m_flag32) { m_path32.remove_all(); decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path32); m_rasterizer.add_path(m_curves32); } else { m_path16.remove_all(); decompose_win32_glyph_outline(m_gbuf, total_size, m_flip_y, m_affine, m_path16); m_rasterizer.add_path(m_curves16); } m_scanlines_aa.prepare(); // Remove all render_scanlines(m_rasterizer, m_scanline_aa, m_scanlines_aa); m_bounds.x1 = m_scanlines_aa.min_x(); m_bounds.y1 = m_scanlines_aa.min_y(); m_bounds.x2 = m_scanlines_aa.max_x() + 1; m_bounds.y2 = m_scanlines_aa.max_y() + 1; m_data_size = m_scanlines_aa.byte_size(); m_data_type = glyph_data_gray8; return true; } } return false; } //------------------------------------------------------------------------ void font_engine_win32_tt_base::write_glyph_to(int8u* data) const { if(data && m_data_size) { switch(m_data_type) { case glyph_data_mono: m_scanlines_bin.serialize(data); break; case glyph_data_gray8: m_scanlines_aa.serialize(data); break; case glyph_data_outline: if(m_flag32) { m_path32.serialize(data); } else { m_path16.serialize(data); } break; } } } //------------------------------------------------------------------------ static bool pair_less(const KERNINGPAIR& v1, const KERNINGPAIR& v2) { if(v1.wFirst != v2.wFirst) return v1.wFirst < v2.wFirst; return v1.wSecond < v2.wSecond; } //------------------------------------------------------------------------ void font_engine_win32_tt_base::sort_kerning_pairs() { pod_array_adaptor<KERNINGPAIR> pairs(m_kerning_pairs, m_num_kerning_pairs); quick_sort(pairs, pair_less); } //------------------------------------------------------------------------ void font_engine_win32_tt_base::load_kerning_pairs() { if(m_dc && m_cur_font) { if(m_kerning_pairs == 0) { m_kerning_pairs = new KERNINGPAIR [16384-16]; m_max_kerning_pairs = 16384-16; } m_num_kerning_pairs = ::GetKerningPairs(m_dc, m_max_kerning_pairs, m_kerning_pairs); if(m_num_kerning_pairs) { // Check to see if the kerning pairs are sorted and // sort them if they are not. //---------------- unsigned i; for(i = 1; i < m_num_kerning_pairs; ++i) { if(!pair_less(m_kerning_pairs[i - 1], m_kerning_pairs[i])) { sort_kerning_pairs(); break; } } } } } //------------------------------------------------------------------------ bool font_engine_win32_tt_base::add_kerning(unsigned first, unsigned second, double* x, double* y) { if(m_dc && m_cur_font) { if(m_num_kerning_pairs == 0) { load_kerning_pairs(); } int end = m_num_kerning_pairs - 1; int beg = 0; KERNINGPAIR t; t.wFirst = (WORD)first; t.wSecond = (WORD)second; while(beg <= end) { int mid = (end + beg) / 2; if(m_kerning_pairs[mid].wFirst == t.wFirst && m_kerning_pairs[mid].wSecond == t.wSecond) { double dx = m_kerning_pairs[mid].iKernAmount; double dy = 0.0; if(m_glyph_rendering == glyph_ren_outline || m_glyph_rendering == glyph_ren_agg_mono || m_glyph_rendering == glyph_ren_agg_gray8) { m_affine.transform_2x2(&dx, &dy); } *x += dx; *y += dy; return true; } else if(pair_less(t, m_kerning_pairs[mid])) { end = mid - 1; } else { beg = mid + 1; } } return false; } return false; } } |