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
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/array.h"
#include "common/textconsole.h"
#include "graphics/surface.h"
#include "groovie/font.h"
namespace Groovie {
T7GFont::T7GFont() : _maxHeight(0), _maxWidth(0), _glyphs(0) {
}
T7GFont::~T7GFont() {
delete[] _glyphs;
}
bool T7GFont::load(Common::SeekableReadStream &stream) {
// Read the mapping of characters to glyphs
if (stream.read(_mapChar2Glyph, 128) < 128) {
error("Groovie::T7GFont: Couldn't read the character to glyph map");
return false;
}
// Calculate the number of glyphs
byte numGlyphs = 0;
for (int i = 0; i < 128; i++)
if (_mapChar2Glyph[i] >= numGlyphs)
numGlyphs = _mapChar2Glyph[i] + 1;
// Read the glyph offsets
uint16 *glyphOffsets = new uint16[numGlyphs];
for (int i = 0; i < numGlyphs; i++)
glyphOffsets[i] = stream.readUint16LE();
if (stream.eos()) {
error("Groovie::T7GFont: Couldn't read the glyph offsets");
delete[] glyphOffsets;
return false;
}
// Allocate the glyph data
delete[] _glyphs;
_glyphs = new Glyph[numGlyphs];
// Ensure we're ready to read the first glyph. (Most versions don't
// need it, but the russian one does. This fixes bug #3095031.)
stream.seek(glyphOffsets[0]);
// Read the glyphs
_maxHeight = _maxWidth = 0;
for (int i = 0; (i < numGlyphs) && !stream.eos(); i++) {
// Verify we're at the expected stream position
if (stream.pos() != glyphOffsets[i]) {
uint16 offset = glyphOffsets[i];
delete[] glyphOffsets;
error("Groovie::T7GFont: Glyph %d starts at %d but the current "
"offset is %d", i, offset, stream.pos());
return false;
}
// Read the glyph information
Glyph *g = &_glyphs[i];
g->width = stream.readByte();
g->julia = stream.readByte();
// Read the pixels data into a dynamic array (we don't know its length)
Common::Array<byte> data;
data.reserve(300);
byte b = stream.readByte();
while (!stream.eos() && (b != 0xFF)) {
data.push_back(b);
b = stream.readByte();
}
// Verify the pixel data size
assert (data.size() % g->width == 0);
g->height = data.size() / g->width;
// Copy the pixel data into the definitive static array
g->pixels = new byte[data.size()];
memcpy(g->pixels, data.begin(), data.size());
// Update the max values
if (g->width > _maxWidth)
_maxWidth = g->width;
if (g->height > _maxHeight)
_maxHeight = g->height;
}
delete[] glyphOffsets;
return true;
}
void T7GFont::drawChar(Graphics::Surface *dst, uint32 chr, int x, int y, uint32 color) const {
// We ignore the color, as the font is already colored
const Glyph *glyph = getGlyph(chr);
const byte *src = glyph->pixels;
byte *target = (byte *)dst->getBasePtr(x, y);
for (int i = 0; i < glyph->height; i++) {
memcpy(target, src, glyph->width);
src += glyph->width;
target += dst->pitch;
}
}
const T7GFont::Glyph *T7GFont::getGlyph(uint32 chr) const {
assert (chr < 128);
byte numGlyph = _mapChar2Glyph[chr];
return &_glyphs[numGlyph];
}
} // End of Groovie namespace
|
