summaryrefslogtreecommitdiff
path: root/src/amigax.c
blob: eb3bc3a4cd704e2a7e8c8590d8bf29039427d720 (plain)
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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
/*
 * Copyright (C) 19896 Lorens Younes
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * Lorens Younes BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * Except as contained in this notice, the name of Lorens Younes shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from Lorens Younes.
 */

/*****************************************************************************\
* amigax.c:                                                                   *
*                                                                             *
*  XPM library                                                                *
*  Emulates some Xlib functionality for Amiga.                                *
*                                                                             *
*  Developed by Lorens Younes (d93-hyo@nada.kth.se) 7/95                      *
*  Revised 4/96                                                               *
\*****************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "XpmI.h"
#include "amigax.h"

#include <graphics/gfxbase.h>
#include <intuition/screens.h>

#include <proto/exec.h>


static struct RastPort *
AllocRastPort (unsigned int, unsigned int, unsigned int);
static void
FreeRastPort (struct RastPort *, unsigned int,unsigned int);


static struct RastPort *
AllocRastPort (
    unsigned int   width,
    unsigned int   height,
    unsigned int   depth)
{
    struct RastPort  *rp;
    
    rp = XpmMalloc (sizeof (*rp));
    if (rp != NULL)
    {
	InitRastPort (rp);
	if (GfxBase->LibNode.lib_Version >= 39)
	{
	    rp->BitMap = AllocBitMap (width, height, depth, BMF_CLEAR, NULL);
	    if (rp->BitMap == NULL)
	    {
		FreeRastPort (rp, width, height);
		return NULL;
	    }
	}
	else
	{
	    unsigned int   i;
	    
	    rp->BitMap = XpmMalloc (sizeof (*rp->BitMap));
	    if (rp->BitMap == NULL)
	    {
		FreeRastPort (rp, width, height);
		return NULL;
	    }
	    
	    InitBitMap (rp->BitMap, depth, width, height);
	    for (i = 0; i < depth; ++i)
		rp->BitMap->Planes[i] = NULL;
	    for (i = 0; i < depth; ++i)
	    {
		rp->BitMap->Planes[i] = (PLANEPTR)AllocRaster (width, height);
		if (rp->BitMap->Planes[i] == NULL)
		{
		    FreeRastPort (rp, width, height);
		    return NULL;
		}
	    }
	}
    }
    
    return rp;
}


static void
FreeRastPort (
    struct RastPort  *rp,
    unsigned int      width,
    unsigned int      height)
{
    if (rp != NULL)
    {
	if (rp->BitMap != NULL)
	{
	    WaitBlit ();
	    if (GfxBase->LibNode.lib_Version >= 39)
		FreeBitMap (rp->BitMap);
	    else
	    {
		unsigned int   i;
		
		for (i = 0; i < rp->BitMap->Depth; ++i)
		{
		    if (rp->BitMap->Planes[i] != NULL)
			FreeRaster (rp->BitMap->Planes[i], width, height);
		}
		XpmFree (rp->BitMap);
	    }
	}
	XpmFree (rp);
    }
}


XImage *
AllocXImage (
    unsigned int   width,
    unsigned int   height,
    unsigned int   depth)
{
    XImage  *img;
    
    img = XpmMalloc (sizeof (*img));
    if (img != NULL)
    {
	img->width = width;
	img->height = height;
	img->rp = AllocRastPort (img->width, img->height, depth);
	if (img->rp == NULL)
	{
	    FreeXImage (img);
	    return NULL;
	}
    }
    
    return img;
}


int
FreeXImage (
    XImage  *ximage)
{
    if (ximage != NULL)
    {
	FreeRastPort (ximage->rp, ximage->width, ximage->height);
	XpmFree (ximage);
    }
    
    return Success;
}


int
XPutPixel (
    XImage         *ximage,
    int             x,
    int             y,
    unsigned long   pixel)
{
    SetAPen (ximage->rp, pixel);
    WritePixel (ximage->rp, x, y);
    
    return Success;
}


Status
AllocBestPen (
    Colormap        colormap,
    XColor         *screen_in_out,
    unsigned long   precision,
    Bool            fail_if_bad)
{
    if (GfxBase->LibNode.lib_Version >= 39)
    {
	unsigned long   r, g, b;
	
	r = screen_in_out->red * 0x00010001;
	g = screen_in_out->green * 0x00010001;
	b = screen_in_out->blue * 0x00010001;
	screen_in_out->pixel = ObtainBestPen (colormap, r, g, b,
					      OBP_Precision, precision,
					      OBP_FailIfBad, fail_if_bad,
					      TAG_DONE);
	if (screen_in_out->pixel == -1)
	    return False;
	
	QueryColor (colormap, screen_in_out);
    }
    else
    {
	XColor   nearest, trial;
	long     nearest_delta, trial_delta;
	int      num_cells, i;
	
	num_cells = colormap->Count;
	nearest.pixel = 0;
	QueryColor (colormap, &nearest);
	nearest_delta = ((((screen_in_out->red >> 8) - (nearest.red >> 8))
			  * ((screen_in_out->red >> 8) - (nearest.red >> 8)))
			 +
			 (((screen_in_out->green >> 8) - (nearest.green >> 8))
			  * ((screen_in_out->green >> 8) - (nearest.green >> 8)))
			 +
			 (((screen_in_out->blue >> 8) - (nearest.blue >> 8))
			  * ((screen_in_out->blue >> 8) - (nearest.blue >> 8))));
	for (i = 1; i < num_cells; i++)
	{
	/* precision and fail_if_bad is ignored under pre V39 */
	    trial.pixel = i;
	    QueryColor (colormap, &trial);
	    trial_delta = ((((screen_in_out->red >> 8) - (trial.red >> 8))
			    * ((screen_in_out->red >> 8) - (trial.red >> 8)))
			   +
			   (((screen_in_out->green >> 8) - (trial.green >> 8))
			    * ((screen_in_out->green >> 8) - (trial.green >> 8)))
			   +
			   (((screen_in_out->blue >> 8) - (trial.blue >> 8))
			    * ((screen_in_out->blue >> 8) - (trial.blue >> 8))));
	    if (trial_delta < nearest_delta)
	    {
		nearest = trial;
		nearest_delta = trial_delta;
	    }
	}
	screen_in_out->pixel = nearest.pixel;
	screen_in_out->red = nearest.red;
	screen_in_out->green = nearest.green;
	screen_in_out->blue = nearest.blue;
    }
    
    return True;
}


int
FreePens (
    Colormap        colormap,
    unsigned long  *pixels,
    int             npixels)
{
    if (GfxBase->LibNode.lib_Version >= 39)
    {
	int   i;
	
	for (i = 0; i < npixels; i++)
	    ReleasePen (colormap, pixels[i]);
    }
    
    return Success;
}


Status
ParseColor (
    char    *spec,
    XColor  *exact_def_return)
{
    int spec_length;
    
    if (spec == 0)
	return False;
    
    spec_length = strlen(spec);
    if (spec[0] == '#')
    {
	int hexlen;
	char hexstr[10];
	
	hexlen = (spec_length - 1) / 3;
	if (hexlen < 1 || hexlen > 4 || hexlen * 3 != spec_length - 1)
	    return False;
	
	hexstr[hexlen] = '\0';
	strncpy (hexstr, spec + 1, hexlen);
	exact_def_return->red = strtoul (hexstr, NULL, 16) << (16 - 4*hexlen);
	strncpy (hexstr, spec + 1 + hexlen, hexlen);
	exact_def_return->green = strtoul (hexstr, NULL, 16) << (16 - 4*hexlen);
	strncpy (hexstr, spec + 1 + 2 * hexlen, hexlen);
	exact_def_return->blue = strtoul (hexstr, NULL, 16) << (16 - 4*hexlen);
	
	return True;
    }
    else
    {
	FILE  *rgbf;
	int    items, red, green, blue;
	char   line[512], name[512];
	Bool   success = False;
	
	rgbf = fopen ("LIBS:rgb.txt", "r");
	if (rgbf == NULL)
	    return False;
	
	while (fgets(line, sizeof (line), rgbf) && !success)
	{
	    items = sscanf (line, "%d %d %d %[^\n]\n",
			    &red, &green, &blue, name);
	    if (items != 4)
		continue;
	    
	    if (red < 0 || red > 0xFF
		|| green < 0 || green > 0xFF
		|| blue < 0 || blue > 0xFF)
	    {
		continue;
	    }
	    
	    if (0 == xpmstrcasecmp (spec, name))
	    {
		exact_def_return->red = red * 0x0101;
		exact_def_return->green = green * 0x0101;
		exact_def_return->blue = blue * 0x0101;
		success = True;
	    }
	}
	fclose (rgbf);
	
	return success;
    }
}


int
QueryColor (
    Colormap   colormap,
    XColor    *def_in_out)
{
    if (GfxBase->LibNode.lib_Version >= 39)
    {
	unsigned long   rgb[3];
	
	GetRGB32 (colormap, def_in_out->pixel, 1, rgb);
	def_in_out->red = rgb[0] >> 16;
	def_in_out->green = rgb[1] >> 16;
	def_in_out->blue = rgb[2] >> 16;
    }
    else
    {
	unsigned short   rgb;
	
	rgb = GetRGB4 (colormap, def_in_out->pixel);
	def_in_out->red = ((rgb >> 8) & 0xF) * 0x1111;
	def_in_out->green = ((rgb >> 4) & 0xF) * 0x1111;
	def_in_out->blue = (rgb & 0xF) * 0x1111;
    }
    
    return Success;
}


int
QueryColors (
    Colormap   colormap,
    XColor    *defs_in_out,
    int        ncolors)
{
    int   i;
    
    for (i = 0; i < ncolors; i++)
	QueryColor (colormap, &defs_in_out[i]);
    
    return Success;
}