1 /* $Id: canvas.c,v 1.5 2002/07/17 21:55:19 bradleyb Exp $ */
2 /*
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
13 */
14
15 #ifdef HAVE_CONFIG_H
16 #include <conf.h>
17 #endif
18
19 #include <stdlib.h>
20 #include <stdio.h>
21
22 #include "u_mem.h"
23
24
25 #include "gr.h"
26 #include "grdef.h"
27 #ifdef __DJGPP__
28 #include "modex.h"
29 #include "vesa.h"
30 #endif
31
32 grs_canvas * grd_curcanv; //active canvas
33 grs_screen * grd_curscreen; //active screen
34
gr_create_canvas(int w,int h)35 grs_canvas *gr_create_canvas(int w, int h)
36 {
37 grs_canvas *new;
38
39 new = (grs_canvas *)d_malloc( sizeof(grs_canvas) );
40 gr_init_bitmap_alloc (&new->cv_bitmap, BM_LINEAR, 0, 0, w, h, w);
41
42 new->cv_color = 0;
43 new->cv_drawmode = 0;
44 new->cv_font = NULL;
45 new->cv_font_fg_color = 0;
46 new->cv_font_bg_color = 0;
47 return new;
48 }
49
gr_create_sub_canvas(grs_canvas * canv,int x,int y,int w,int h)50 grs_canvas *gr_create_sub_canvas(grs_canvas *canv, int x, int y, int w, int h)
51 {
52 grs_canvas *new;
53
54 new = (grs_canvas *)d_malloc( sizeof(grs_canvas) );
55 gr_init_sub_bitmap (&new->cv_bitmap, &canv->cv_bitmap, x, y, w, h);
56
57 new->cv_color = canv->cv_color;
58 new->cv_drawmode = canv->cv_drawmode;
59 new->cv_font = canv->cv_font;
60 new->cv_font_fg_color = canv->cv_font_fg_color;
61 new->cv_font_bg_color = canv->cv_font_bg_color;
62 return new;
63 }
64
gr_init_canvas(grs_canvas * canv,unsigned char * pixdata,int pixtype,int w,int h)65 void gr_init_canvas(grs_canvas *canv, unsigned char * pixdata, int pixtype, int w, int h)
66 {
67 int wreal;
68 canv->cv_color = 0;
69 canv->cv_drawmode = 0;
70 canv->cv_font = NULL;
71 canv->cv_font_fg_color = 0;
72 canv->cv_font_bg_color = 0;
73
74
75 #ifndef __DJGPP__
76 wreal = w;
77 #else
78 wreal = (pixtype == BM_MODEX) ? w / 4 : w;
79 #endif
80 gr_init_bitmap (&canv->cv_bitmap, pixtype, 0, 0, w, h, wreal, pixdata);
81 }
82
gr_init_sub_canvas(grs_canvas * new,grs_canvas * src,int x,int y,int w,int h)83 void gr_init_sub_canvas(grs_canvas *new, grs_canvas *src, int x, int y, int w, int h)
84 {
85 new->cv_color = src->cv_color;
86 new->cv_drawmode = src->cv_drawmode;
87 new->cv_font = src->cv_font;
88 new->cv_font_fg_color = src->cv_font_fg_color;
89 new->cv_font_bg_color = src->cv_font_bg_color;
90
91 gr_init_sub_bitmap (&new->cv_bitmap, &src->cv_bitmap, x, y, w, h);
92 }
93
gr_free_canvas(grs_canvas * canv)94 void gr_free_canvas(grs_canvas *canv)
95 {
96 gr_free_bitmap_data(&canv->cv_bitmap);
97 d_free(canv);
98 }
99
gr_free_sub_canvas(grs_canvas * canv)100 void gr_free_sub_canvas(grs_canvas *canv)
101 {
102 d_free(canv);
103 }
104
105 int gr_wait_for_retrace = 1;
106
gr_show_canvas(grs_canvas * canv)107 void gr_show_canvas( grs_canvas *canv )
108 {
109 #ifdef __DJGPP__
110 if (canv->cv_bitmap.bm_type == BM_MODEX )
111 gr_modex_setstart( canv->cv_bitmap.bm_x, canv->cv_bitmap.bm_y, gr_wait_for_retrace );
112
113 else if (canv->cv_bitmap.bm_type == BM_SVGA )
114 gr_vesa_setstart( canv->cv_bitmap.bm_x, canv->cv_bitmap.bm_y );
115 #endif
116 // else if (canv->cv_bitmap.bm_type == BM_LINEAR )
117 // Int3(); // Get JOHN!
118 //gr_linear_movsd( canv->cv_bitmap.bm_data, (void *)gr_video_memory, 320*200);
119 }
120
gr_set_current_canvas(grs_canvas * canv)121 void gr_set_current_canvas( grs_canvas *canv )
122 {
123 if (canv==NULL)
124 grd_curcanv = &(grd_curscreen->sc_canvas);
125 else
126 grd_curcanv = canv;
127 #ifndef NO_ASM
128 if ( (grd_curcanv->cv_color >= 0) && (grd_curcanv->cv_color <= 255) ) {
129 gr_var_color = grd_curcanv->cv_color;
130 } else
131 gr_var_color = 0;
132 gr_var_bitmap = grd_curcanv->cv_bitmap.bm_data;
133 gr_var_bwidth = grd_curcanv->cv_bitmap.bm_rowsize;
134 #endif
135 }
136
gr_clear_canvas(int color)137 void gr_clear_canvas(int color)
138 {
139 gr_setcolor(color);
140 gr_rect(0,0,GWIDTH-1,GHEIGHT-1);
141 }
142
gr_setcolor(int color)143 void gr_setcolor(int color)
144 {
145 grd_curcanv->cv_color=color;
146 #ifndef NO_ASM
147 gr_var_color = color;
148 #endif
149 }
150
151