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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 The ScummVM project
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "common/stdafx.h"
#include "graphics/font.h"
namespace Graphics {
int NewFont::getCharWidth(byte chr) const {
// If no width table is specified, return the maximum width
if (!desc.width)
return desc.maxwidth;
// If this character is not included in the font, use the default char.
if (chr < desc.firstchar || desc.firstchar + desc.size < chr) {
if (chr == ' ')
return desc.maxwidth / 2;
chr = desc.defaultchar;
}
return desc.width[chr - desc.firstchar];
}
void NewFont::drawChar(Surface *dst, byte chr, int tx, int ty, uint32 color) const {
assert(dst != 0);
byte *ptr = (byte *)dst->getBasePtr(tx, ty);
assert(desc.bits != 0 && desc.maxwidth <= 16);
assert(dst->bytesPerPixel == 1 || dst->bytesPerPixel == 2);
// If this character is not included in the font, use the default char.
if (chr < desc.firstchar || chr >= desc.firstchar + desc.size) {
if (chr == ' ')
return;
chr = desc.defaultchar;
}
const int w = getCharWidth(chr);
chr -= desc.firstchar;
const bitmap_t *tmp = desc.bits + (desc.offset ? desc.offset[chr] : (chr * desc.height));
for (int y = 0; y < desc.height; y++, ptr += dst->pitch) {
const bitmap_t buffer = *tmp++;
bitmap_t mask = 0x8000;
if (ty + y < 0 || ty + y >= dst->h)
continue;
for (int x = 0; x < w; x++, mask >>= 1) {
if (tx + x < 0 || tx + x >= dst->w)
continue;
if ((buffer & mask) != 0) {
if (dst->bytesPerPixel == 1)
ptr[x] = color;
else if (dst->bytesPerPixel == 2)
((uint16 *)ptr)[x] = color;
}
}
}
}
#pragma mark -
int Font::getStringWidth(const Common::String &str) const {
int space = 0;
for (uint i = 0; i < str.size(); ++i)
space += getCharWidth(str[i]);
return space;
}
void Font::drawString(Surface *dst, const Common::String &s, int x, int y, int w, uint32 color, TextAlignment align, int deltax, bool useEllipsis) const {
assert(dst != 0);
const int leftX = x, rightX = x + w;
uint i;
int width = getStringWidth(s);
Common::String str;
if (useEllipsis && width > w) {
// String is too wide. So we shorten it "intellegently", by replacing
// parts of it by an ellipsis ("..."). There are three possibilities
// for this: replace the start, the end, or the middle of the string.
// What is best really depends on the context; but unless we want to
// make this configurable, replacing the middle probably is a good
// compromise.
const int ellipsisWidth = getStringWidth("...");
// SLOW algorithm to remove enough of the middle. But it is good enough
// for now.
const int halfWidth = (w - ellipsisWidth) / 2;
int w2 = 0;
for (i = 0; i < s.size(); ++i) {
int charWidth = getCharWidth(s[i]);
if (w2 + charWidth > halfWidth)
break;
w2 += charWidth;
str += s[i];
}
// At this point we know that the first 'i' chars are together 'w2'
// pixels wide. We took the first i-1, and add "..." to them.
str += "...";
// The original string is width wide. Of those we already skipped past
// w2 pixels, which means (width - w2) remain.
// The new str is (w2+ellipsisWidth) wide, so we can accomodate about
// (w - (w2+ellipsisWidth)) more pixels.
// Thus we skip ((width - w2) - (w - (w2+ellipsisWidth))) =
// (width + ellipsisWidth - w)
int skip = width + ellipsisWidth - w;
for (; i < s.size() && skip > 0; ++i) {
skip -= getCharWidth(s[i]);
}
// Append the remaining chars, if any
for (; i < s.size(); ++i) {
str += s[i];
}
width = getStringWidth(str);
} else {
str = s;
}
if (align == kTextAlignCenter)
x = x + (w - width - 1)/2;
else if (align == kTextAlignRight)
x = x + w - width;
x += deltax;
for (i = 0; i < str.size(); ++i) {
w = getCharWidth(str[i]);
if (x+w > rightX)
break;
if (x >= leftX)
drawChar(dst, str[i], x, y, color);
x += w;
}
}
} // End of namespace Graphics
|
