1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* FTGL - OpenGL font library
*
* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
* Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <math.h>
#include "FTGL/ftgl.h"
#include "FTInternals.h"
#include "FTPixmapGlyphImpl.h"
//
// FTGLPixmapGlyph
//
FTPixmapGlyph::FTPixmapGlyph(FT_GlyphSlot glyph) :
FTGlyph(new FTPixmapGlyphImpl(glyph))
{}
FTPixmapGlyph::~FTPixmapGlyph()
{}
const FTPoint& FTPixmapGlyph::Render(const FTPoint& pen, int renderMode)
{
FTPixmapGlyphImpl *myimpl = dynamic_cast<FTPixmapGlyphImpl *>(impl);
return myimpl->RenderImpl(pen, renderMode);
}
//
// FTGLPixmapGlyphImpl
//
FTPixmapGlyphImpl::FTPixmapGlyphImpl(FT_GlyphSlot glyph)
: FTGlyphImpl(glyph),
destWidth(0),
destHeight(0),
data(0)
{
err = FT_Render_Glyph(glyph, FT_RENDER_MODE_NORMAL);
if(err || ft_glyph_format_bitmap != glyph->format)
{
return;
}
FT_Bitmap bitmap = glyph->bitmap;
//check the pixel mode
//ft_pixel_mode_grays
int srcWidth = bitmap.width;
int srcHeight = bitmap.rows;
destWidth = srcWidth;
destHeight = srcHeight;
if(destWidth && destHeight)
{
data = new unsigned char[destWidth * destHeight * 2];
unsigned char* src = bitmap.buffer;
unsigned char* dest = data + ((destHeight - 1) * destWidth * 2);
size_t destStep = destWidth * 2 * 2;
for(int y = 0; y < srcHeight; ++y)
{
for(int x = 0; x < srcWidth; ++x)
{
*dest++ = static_cast<unsigned char>(255);
*dest++ = *src++;
}
dest -= destStep;
}
destHeight = srcHeight;
}
pos.X(glyph->bitmap_left);
pos.Y(srcHeight - glyph->bitmap_top);
}
FTPixmapGlyphImpl::~FTPixmapGlyphImpl()
{
delete [] data;
}
const FTPoint& FTPixmapGlyphImpl::RenderImpl(const FTPoint& pen,
int renderMode)
{
if(data)
{
float dx, dy;
dx = floor(pen.Xf() + pos.Xf());
dy = floor(pen.Yf() - pos.Yf());
glBitmap(0, 0, 0.0f, 0.0f, dx, dy, (const GLubyte*)0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
glDrawPixels(destWidth, destHeight, GL_LUMINANCE_ALPHA,
GL_UNSIGNED_BYTE, (const GLvoid*)data);
glBitmap(0, 0, 0.0f, 0.0f, -dx, -dy, (const GLubyte*)0);
}
return advance;
}
|
