Mercurial > hg > dmlib

annotate dmtext_bm.c @ 65:03375aa0ef2b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement some new functions for bitmapped font handling.
author Matti Hamalainen <ccr@tnsp.org>
date Mon, 01 Oct 2012 11:20:56 +0300
parents ad1ef3f0d474
children f18ad054a695
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
60
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
1 /*
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
2 * DMLib
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
3 * -- Bitmap and TTF text & font support
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
4 * Programmed and designed by Matti 'ccr' Hamalainen
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
5 * (C) Copyright 2012 Tecnic Software productions (TNSP)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
6 */
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
7 #include "dmtext.h"
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
8
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
9
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
10 void dmDrawBMTextConst(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
11 {
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
12 const char *ptr = fmt;
63
3d9da937db69 More work on the text support.
Matti Hamalainen <ccr@tnsp.org>
parents: 60
diff changeset
13 DMScaledBlitFunc blit = dmGetScaledBlitFunc(screen->format, font->glyphs[0]->format, mode);
60
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
14 while (*ptr)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
15 {
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
16 char ch = *ptr++;
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
17
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
18 if (isprint(ch) && ch != ' ' && ch != '\t')
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
19 {
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
20 SDL_Surface *glyph = font->glyphs[(unsigned char) ch];
63
3d9da937db69 More work on the text support.
Matti Hamalainen <ccr@tnsp.org>
parents: 60
diff changeset
21 blit(glyph, xc, yc, glyph->w, glyph->h, screen);
3d9da937db69 More work on the text support.
Matti Hamalainen <ccr@tnsp.org>
parents: 60
diff changeset
22 xc += glyph->w;
60
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
23 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
24 else
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
25 xc += font->width;
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
26 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
27 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
28
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
29
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
30 void dmDrawBMTextVA(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt, va_list ap)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
31 {
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
32 char *tmp = dm_strdup_vprintf(fmt, ap);
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
33 if (tmp != NULL)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
34 {
63
3d9da937db69 More work on the text support.
Matti Hamalainen <ccr@tnsp.org>
parents: 60
diff changeset
35 dmDrawBMTextConst(screen, font, mode, xc, yc, tmp);
60
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
36 dmFree(tmp);
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
37 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
38 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
39
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
40
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
41 void dmDrawBMText(SDL_Surface *screen, DMBitmapFont *font, int mode, int xc, int yc, const char *fmt, ...)
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
42 {
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
43 va_list ap;
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
44
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
45 va_start(ap, fmt);
63
3d9da937db69 More work on the text support.
Matti Hamalainen <ccr@tnsp.org>
parents: 60
diff changeset
46 dmDrawBMTextVA(screen, font, mode, xc, yc, fmt, ap);
60
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
47 va_end(ap);
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
48 }
f28cd66356f6 Initial work for bitmapped fonts and text drawing. Also moved TTF header
Matti Hamalainen <ccr@tnsp.org>
parents: 0
diff changeset
49
65
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
50
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
51 DMBitmapFont *dmNewBitmapFont(int nglyphs)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
52 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
53 DMBitmapFont *font = dmMalloc0(sizeof(DMBitmapFont));
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
54 if (font == NULL)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
55 return NULL;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
56
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
57 font->nglyphs = nglyphs;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
58 font->glyphs = dmCalloc(nglyphs, sizeof(SDL_Surface *));
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
59
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
60 return font;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
61 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
62
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
63
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
64 int dmFreeBitmapFont(DMBitmapFont *font)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
65 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
66 int i;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
67
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
68 if (font == NULL)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
69 return DMERR_NULLPTR;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
70
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
71 for (i = 0; i < font->nglyphs; i++)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
72 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
73 if (font->glyphs[i] != NULL)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
74 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
75 SDL_FreeSurface(font->glyphs[i]);
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
76 font->glyphs[i] = NULL;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
77 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
78 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
79
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
80 dmFree(font);
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
81 return DMERR_OK;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
82 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
83
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
84
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
85 int dmLoadBitmapFont(DMResource *res, DMBitmapFont **pfont)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
86 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
87 return DMERR_OK;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
88 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
89
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
90
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
91 int dmCreateBitmapFontFromImage(SDL_Surface *image, int width, int height, DMBitmapFont **pfont)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
92 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
93 int glyph, xc, yc, xglyphs, yglyphs;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
94 DMBitmapFont *font;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
95
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
96 if (image->w < width || width < 4 || image->h < height || height < 4)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
97 return DMERR_INVALID_ARGS;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
98
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
99 xglyphs = image->w / width;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
100 yglyphs = image->h / height;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
101
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
102 if ((font = dmNewBitmapFont(xglyphs * yglyphs)) == NULL)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
103 return DMERR_MALLOC;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
104
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
105 font->width = width;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
106 font->height = height;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
107
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
108 glyph = 0;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
109 for (yc = 0; yc < yglyphs; yc++)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
110 for (xc = 0; xc < xglyphs; xc++)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
111 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
112 SDL_Surface *bmp = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
113 image->format->BitsPerPixel,
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
114 image->format->Rmask,
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
115 image->format->Gmask,
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
116 image->format->Bmask,
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
117 image->format->Amask);
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
118
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
119 if (bmp == NULL)
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
120 {
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
121 dmFreeBitmapFont(font);
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
122 return DMERR_MALLOC;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
123 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
124
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
125 font->glyphs[glyph++] = bmp;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
126 }
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
127
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
128 *pfont = font;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
129 return DMERR_OK;
03375aa0ef2b Implement some new functions for bitmapped font handling.
Matti Hamalainen <ccr@tnsp.org>
parents: 64
diff changeset
130 }