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
160
161
162
163
164
165
|
/* font.c - Copyright (C) 2001-2002 Jacob Kroon, see COPYING for details */
#include <stdlib.h>
#include <string.h>
#include "video.h"
#include "font.h"
/* structs */
typedef struct _Glyph Glyph;
struct _Glyph {
Sint16 x_move, y_move, advance;
SDL_Surface *sdl_image;
};
struct _Font {
Glyph **glyph;
Uint16 x, y;
};
/* statics */
static Uint8 _alpha = 255;
/* functions */
Font *font_create(Uint8 * data, Uint32 * memcounter)
{
Uint32 index = 0, i, size;
Uint8 ch;
Sint16 x_size, y_size;
SDL_Color palette[256];
Font *font = NULL;
memcpy(&size, data, sizeof(Uint32));
if (memcounter)
*memcounter += size + sizeof(Uint32);
data += sizeof(Uint32);
font = (Font *) malloc(sizeof(Font));
for (i = 0; i < 256; i++)
palette[i].r = palette[i].g = palette[i].b = i;
font->glyph = (Glyph **) malloc(256 * sizeof(Glyph *));
memset(font->glyph, 0, 256 * sizeof(Glyph *));
while (index < size) {
ch = data[index++];
memcpy(&x_size, &data[index], 2);
index += 2;
memcpy(&y_size, &data[index], 2);
index += 2;
font->glyph[ch] = (Glyph *) malloc(sizeof(Glyph));
memcpy(&font->glyph[ch]->x_move, &data[index], 2);
index += 2;
memcpy(&font->glyph[ch]->y_move, &data[index], 2);
index += 2;
memcpy(&font->glyph[ch]->advance, &data[index], 2);
index += 2;
font->glyph[ch]->sdl_image =
SDL_CreateRGBSurfaceFrom(&data[index], x_size, y_size, 8, x_size, 0,
0, 0, 0);
SDL_SetPalette(font->glyph[ch]->sdl_image, SDL_LOGPAL, palette, 0, 256);
SDL_SetColorKey(font->glyph[ch]->sdl_image, SDL_SRCCOLORKEY, 0);
index += x_size * y_size;
}
font->x = font->y = 0;
return font;
}
void font_free(Font * font)
{
Uint32 i;
for (i = 0; i < 256; i++)
if (font->glyph[i]) {
SDL_FreeSurface(font->glyph[i]->sdl_image);
free(font->glyph[i]);
}
free(font->glyph);
free(font);
}
void font_set_color(Font * font, Uint8 r, Uint8 g, Uint8 b)
{
Uint32 i;
SDL_Color palette[256];
for (i = 0; i < 256; i++) {
palette[i].r = (Uint8) (r * i / 256.0);
palette[i].g = (Uint8) (g * i / 256.0);
palette[i].b = (Uint8) (b * i / 256.0);
}
for (i = 0; i < 256; i++)
if (font->glyph[i])
SDL_SetPalette(font->glyph[i]->sdl_image, SDL_LOGPAL, palette, 0, 256);
}
void font_set_alpha(Font * font, Uint8 alpha)
{
_alpha = alpha;
}
void font_print(Font * font, char *string, SDL_Rect * fill)
{
Uint32 ruler = 0, i;
SDL_Rect rect, area;
for (i = 0; i < strlen(string); i++)
if (font->glyph[(Uint8) string[i]]) {
rect.x = font->x + font->glyph[(Uint8) string[i]]->x_move + ruler;
rect.y = font->y - font->glyph[(Uint8) string[i]]->y_move;
rect.w = rect.h = 0;
video_set_alpha(font->glyph[(Uint8) string[i]]->sdl_image, _alpha);
video_blit(font->glyph[(Uint8) string[i]]->sdl_image, NULL, &rect);
if (i == 0)
area = rect;
else {
if (rect.x < area.x)
area.x = rect.x;
if (rect.y < area.y)
area.y = rect.y;
if (rect.x + rect.w > area.x + area.w)
area.w = rect.x + rect.w - area.x;
if (rect.y + rect.h > area.y + area.h)
area.h = rect.y + rect.h - area.y + 1;
}
ruler += font->glyph[(Uint8) string[i]]->advance;
}
if (fill)
*fill = area;
}
Uint32 font_calc_width(Font * font, char *string)
{
Uint32 width = 0, i;
if (string == NULL)
return 0;
for (i = 0; i < strlen(string); i++)
width += font->glyph[(Uint8) string[i]]->advance;
return width;
}
Uint32 font_calc_height(Font * font, char *string)
{
Uint32 height = 0, i;
Glyph *glyph;
if (string == NULL)
return 0;
for (i = 0; i < strlen(string); i++) {
glyph = font->glyph[(Uint8) string[i]];
if (glyph->sdl_image->h > height)
height = glyph->sdl_image->h;
}
return height;
}
void font_move_pen(Font * font, Uint16 dx, Uint16 dy)
{
font->x += dx;
font->y += dy;
}
void font_set_pen(Font * font, Uint16 x, Uint16 y)
{
font->x = x;
font->y = y;
}
|
