1 /*
2 * FTGL - OpenGL font library
3 *
4 * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
5 * Copyright (c) 2008 Sam Hocevar <sam@hocevar.net>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be
16 * included in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 */
26
27 #include "config.h"
28
29 #include <string>
30
31 #include "FTGL/ftgl.h"
32
33 #include "FTInternals.h"
34 #include "FTBitmapGlyphImpl.h"
35
36
37 //
38 // FTGLBitmapGlyph
39 //
40
41
FTBitmapGlyph(FT_GlyphSlot glyph)42 FTBitmapGlyph::FTBitmapGlyph(FT_GlyphSlot glyph) :
43 FTGlyph(new FTBitmapGlyphImpl(glyph))
44 {}
45
46
~FTBitmapGlyph()47 FTBitmapGlyph::~FTBitmapGlyph()
48 {}
49
50
Render(const FTPoint & pen,int renderMode)51 const FTPoint& FTBitmapGlyph::Render(const FTPoint& pen, int renderMode)
52 {
53 FTBitmapGlyphImpl *myimpl = dynamic_cast<FTBitmapGlyphImpl *>(impl);
54 return myimpl->RenderImpl(pen, renderMode);
55 }
56
57
58 //
59 // FTGLBitmapGlyphImpl
60 //
61
62
FTBitmapGlyphImpl(FT_GlyphSlot glyph)63 FTBitmapGlyphImpl::FTBitmapGlyphImpl(FT_GlyphSlot glyph)
64 : FTGlyphImpl(glyph),
65 destWidth(0),
66 destHeight(0),
67 data(0)
68 {
69 err = FT_Render_Glyph(glyph, FT_RENDER_MODE_MONO);
70 if(err || ft_glyph_format_bitmap != glyph->format)
71 {
72 return;
73 }
74
75 FT_Bitmap bitmap = glyph->bitmap;
76
77 unsigned int srcWidth = bitmap.width;
78 unsigned int srcHeight = bitmap.rows;
79 unsigned int srcPitch = bitmap.pitch;
80
81 destWidth = srcWidth;
82 destHeight = srcHeight;
83 destPitch = srcPitch;
84
85 if(destWidth && destHeight)
86 {
87 data = new unsigned char[destPitch * destHeight];
88 unsigned char* dest = data + ((destHeight - 1) * destPitch);
89
90 unsigned char* src = bitmap.buffer;
91
92 for(unsigned int y = 0; y < srcHeight; ++y)
93 {
94 memcpy(dest, src, srcPitch);
95 dest -= destPitch;
96 src += srcPitch;
97 }
98 }
99
100 pos = FTPoint(glyph->bitmap_left, static_cast<int>(srcHeight) - glyph->bitmap_top, 0.0);
101 }
102
103
~FTBitmapGlyphImpl()104 FTBitmapGlyphImpl::~FTBitmapGlyphImpl()
105 {
106 delete [] data;
107 }
108
109
RenderImpl(const FTPoint & pen,int renderMode)110 const FTPoint& FTBitmapGlyphImpl::RenderImpl(const FTPoint& pen, int renderMode)
111 {
112 (void)renderMode;
113
114 if(data)
115 {
116 float dx, dy;
117
118 dx = pen.Xf() + pos.Xf();
119 dy = pen.Yf() - pos.Yf();
120
121 glBitmap(0, 0, 0.0f, 0.0f, dx, dy, (const GLubyte*)0);
122 glPixelStorei(GL_UNPACK_ROW_LENGTH, destPitch * 8);
123 glBitmap(destWidth, destHeight, 0.0f, 0.0, 0.0, 0.0,
124 (const GLubyte*)data);
125 glBitmap(0, 0, 0.0f, 0.0f, -dx, -dy, (const GLubyte*)0);
126 }
127
128 return advance;
129 }
130
131