/[pearpc]/src/system/font.cc
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /src/system/font.cc

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Revision 1 - (show annotations)
Wed Sep 5 17:11:21 2007 UTC (13 years, 3 months ago) by dpavlin
File size: 3594 byte(s)
import upstream CVS
1 /*
2 * PearPC
3 * font.cc
4 *
5 * Copyright (C) 1999-2003 Sebastian Biallas (sb@biallas.net)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include <cstdlib>
22 #include <cstring>
23 #include "system/font.h"
24
25 struct FFH {
26 byte magic[4];
27 byte height;
28 byte dist;
29 byte res0[11];
30 } PACKED;
31
32 struct FChar {
33 byte width;
34 uint16 data[0];
35 };
36
37 Font::Font()
38 {
39 mData = NULL;
40 }
41
42 Font::~Font()
43 {
44 free(mData);
45 }
46
47 bool Font::loadFromFile(File &file)
48 {
49 free(mData);
50 mData = NULL;
51 FFH hdr;
52 file.readx(&hdr, sizeof hdr);
53 unsigned int c = 256 * (2 * hdr.height + 1);
54 mData = (byte*)malloc(c);
55 memset(mData, 0, c);
56 mCharWidth = 1;
57 mCharHeight = hdr.height;
58 mBytes = 2;
59 file.readx(mData, c);
60 for (int i=0; i<256; i++) {
61 byte width = mData[(mCharHeight*2+1)*i];
62 if (width > mCharWidth) mCharWidth = width;
63 }
64 mPadX = 0;
65 mPadY = 0;
66 mRealWidth = mCharWidth;
67 mRealHeight = mCharHeight;
68 return true;
69 }
70
71 void Font::setPadding(int px, int py)
72 {
73 mRealWidth = mRealWidth-mPadX+px;
74 mRealHeight = mRealHeight-mPadY+py;
75 }
76
77 void Font::drawChar(int x, int y, byte c, uint fgcolor, uint bgcolor, byte *tobuf, int bufwidth, int bufheight, int bufcolorbytes)
78 {
79 byte width = mData[(mCharHeight*2+1)*c];
80 int jshift = (mCharWidth - width)/2;
81 int bufsize = bufwidth * bufheight * bufcolorbytes;
82 uint o = (x + y * bufwidth)*bufcolorbytes;
83 for (int i=0; i < mCharHeight; i++) {
84 byte *chr = mData + (mCharHeight*2+1)*c + i*2 + 1;
85 uint16 cdata = (chr[1] << 8) | chr[0];
86 int a = o + i * bufwidth * bufcolorbytes;
87 for (int j=0; j< mCharWidth; j++) {
88 if (a < bufsize) {
89 uint c;
90 if ((cdata << jshift) & (1 << j)) {
91 c = fgcolor;
92 } else {
93 c = bgcolor;
94 }
95 switch (bufcolorbytes) {
96 case 1:
97 tobuf[a] = c;
98 break;
99 case 2:
100 tobuf[a+0]=(((c>>8)>>1)&0x7c)|(((c>>16)>>6) & 3);
101 tobuf[a+1]=(((c>>16)<<2)&0xe0)|(((c>>24)>>3) & 0x1f);
102 break;
103 case 4:
104 tobuf[a+0]=0;
105 tobuf[a+1]=c>>8;
106 tobuf[a+2]=c>>16;
107 tobuf[a+3]=c>>24;
108 break;
109 }
110 }
111 a += bufcolorbytes;
112 }
113 }
114 }
115
116 void Font::drawFixedChar(int x, int y, int dx, int dy, byte c, uint fgcolor, uint bgcolor, byte *tobuf, int bufwidth, int bufheight, int bufcolorbytes)
117 {
118 drawChar(dx+x*mRealWidth, dy+y*mRealHeight, c, fgcolor, bgcolor, tobuf, bufwidth, bufheight, bufcolorbytes);
119 }
120
121 void Font::drawChar2(SystemDisplay *toDisplay, int x, int y, byte c, RGBA fgcolor, RGBA bgcolor)
122 {
123 byte width = mData[(mCharHeight*2+1)*c];
124 int jshift = (mCharWidth - width)/2;
125 for (int i=0; i < mCharHeight; i++) {
126 byte *chr = mData + (mCharHeight*2+1)*c + i*2 + 1;
127 uint16 cdata = (chr[1] << 8) | chr[0];
128 for (int j=0; j< mCharWidth; j++) {
129 RGBA c;
130 if ((cdata << jshift) & (1 << j)) {
131 c = fgcolor;
132 } else {
133 c = bgcolor;
134 }
135 toDisplay->putPixelRGBA(x+j, y+i, c);
136 }
137 }
138 }
139
140 void Font::drawFixedChar2(SystemDisplay *toDisplay, int x, int y, int dx, int dy, byte c, RGBA fgcolor, RGBA bgcolor)
141 {
142 drawChar2(toDisplay, dx+x*mRealWidth, dy+y*mRealHeight, c, fgcolor, bgcolor);
143 }

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