summaryrefslogtreecommitdiff
path: root/app/wlib/mswlib/mswbitmap.c
blob: d4ee83c17060cf3d9fa3aca81280265da1a4631d (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
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
/** \file mswbitmap.c
 * Bitmap handling functions
 *
 * $Header: /home/dmarkle/xtrkcad-fork-cvs/xtrkcad/app/wlib/mswlib/mswbitmap.c,v 1.1 2009-09-20 14:55:54 m_fischer Exp $
 */
/*  XTrkCad - Model Railroad CAD
 *  Copyright (C) 2009 Martin Fischer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#include <windows.h>
#include <string.h>
#include <malloc.h>
#include <math.h>
#include <stdlib.h>
#include <commdlg.h>
#include <stdio.h>
#include <assert.h>
#include "mswint.h"
#include "i18n.h"

#if _MSC_VER > 1300
	#define stricmp _stricmp
	#define strnicmp _strnicmp
	#define strdup _strdup
#endif

struct wBitmap_t {
		WOBJ_COMMON
		};

HPALETTE hOldPal;

HBITMAP mswCreateBitMap(
		COLORREF fgCol1,
		COLORREF fgCol2,
		COLORREF bgCol,
		int w,
		int h,
		const char * bits )
{
	HDC hDc;
	HDC hButtDc;
	HBRUSH oldBrush, newBrush;
	RECT rect;
	HBITMAP hBitMap;
	HBITMAP hOldBitMap;
	const char * byts_p;
	int byt, i, j;

	hDc = GetDC( mswHWnd );
	hButtDc = CreateCompatibleDC( hDc );
	hBitMap = CreateCompatibleBitmap( hDc, w, h );
	ReleaseDC( mswHWnd, hDc );
	hOldBitMap = SelectObject( hButtDc, hBitMap );
	if (mswPalette) {
		hOldPal = SelectPalette( hButtDc, mswPalette, 0 );
	}
	
	/*PatBlt( hButtDc, 0, 0, w, h, WHITENESS );*/
	newBrush = CreateSolidBrush( bgCol );
	oldBrush = SelectObject( hButtDc, newBrush );
	rect.top = 0;
	rect.left = 0;
	rect.bottom = h;
	rect.right = w;
	FillRect( hButtDc, &rect, newBrush );
	DeleteObject( SelectObject( hButtDc, oldBrush ) );

	byts_p = bits;
	for ( j = 0; j < h; j++ ) {
		byt = (0xFF & *byts_p++) | 0x100;
		for ( i = 0; i < w; i++ ) {
			if (byt == 1)
				byt = (0xFF & *byts_p++) | 0x100;
			if ( byt & 0x1 ) {
				SetPixel( hButtDc, i, j, fgCol1 );
				SetPixel( hButtDc, i+1, j+1, fgCol2 );
			}
			byt >>= 1;
		}
	}

	SelectObject( hButtDc, hOldBitMap );
	DeleteDC( hButtDc );
	return hBitMap;
}

static dynArr_t bitmap_da;
#define controlMap(N) DYNARR_N(controlMap_t,controlMap_da,N)
#define bitmap(N) DYNARR_N(HBITMAP,bitmap_da,N)

void mswRegisterBitMap(
		HBITMAP hBm )
{
	DYNARR_APPEND( HBITMAP, bitmap_da, 10 );
	bitmap(bitmap_da.cnt-1) = hBm;
}

void deleteBitmaps( void )
{
	int inx;
	for ( inx=0; inx<bitmap_da.cnt; inx++ )
		DeleteObject( bitmap(inx) );
}

/**
 * Draw a bitmap to the screen.
 *
 * \param hDc IN device context 
 * \param offw IN horizontal offset
 * \param offh IN vertical offset
 * \param bm IN icon to draw
 * \param disabled IN draw in disabled state
 * \param color1 IN for two color bitmaps: foreground color enabled state
 * \param color2 IN for two color bitmaps: foreground color disabled state
 *
 */

void mswDrawIcon(
		HDC hDc,
		int offw,
		int offh,
		wIcon_p bm,
		int disabled,
		COLORREF color1,
		COLORREF color2 )
{
	int i;
	int byt;
	BITMAPINFO *bmiInfo;
	COLORREF col;

    /* draw the bitmap by dynamically creating a Windows DIB in memory */
	/* BITMAPINFO already has one RGBQUAD color struct, so only allocate the rest */
    bmiInfo = malloc( sizeof( BITMAPINFO ) + (bm->colorcnt - 1) * sizeof( RGBQUAD ));
    if( !bmiInfo ) {
        fprintf( stderr, "could not allocate memory for bmiInfo\n" );
        abort();
    }

    /* initialize bitmap header from XPM information */
    bmiInfo->bmiHeader.biSize = sizeof( bmiInfo->bmiHeader );
    bmiInfo->bmiHeader.biWidth = bm->w;
    bmiInfo->bmiHeader.biHeight = bm->h;
    bmiInfo->bmiHeader.biPlanes = 1;
    if( bm->type == mswIcon_bitmap )
        bmiInfo->bmiHeader.biBitCount = 1;
    else 
        bmiInfo->bmiHeader.biBitCount = 8;							/* up to 256 colors */
    bmiInfo->bmiHeader.biCompression = BI_RGB;						/* no compression */
    bmiInfo->bmiHeader.biSizeImage = 0;
    bmiInfo->bmiHeader.biXPelsPerMeter = 0;
    bmiInfo->bmiHeader.biYPelsPerMeter = 0;
    bmiInfo->bmiHeader.biClrUsed = bm->colorcnt;					/* number of colors used */
    bmiInfo->bmiHeader.biClrImportant = bm->colorcnt;

	/*
	 * create a transparency mask and paint to screen
	 */ 
	if( bm->type == mswIcon_bitmap ) {
		memset( &bmiInfo->bmiColors[ 0 ], 0xFF, sizeof( RGBQUAD ));
		memset( &bmiInfo->bmiColors[ 1 ], 0, sizeof( RGBQUAD ));
	} else {
		memset( bmiInfo->bmiColors, 0, bm->colorcnt * sizeof( RGBQUAD ));
		memset( &bmiInfo->bmiColors[ bm->transparent ], 0xFF, sizeof( RGBQUAD ));
	}

	StretchDIBits(hDc, offw, offh,
				 (int)ceil(bmiInfo->bmiHeader.biWidth*scaleIcon),
	             (int)ceil(bmiInfo->bmiHeader.biHeight*scaleIcon),
	              0, 0,
	              bmiInfo->bmiHeader.biWidth,
	              bmiInfo->bmiHeader.biHeight,
	              bm->pixels, bmiInfo,
	              DIB_RGB_COLORS, SRCAND);
	
	/* now paint the bitmap with transparent set to black */
	if( bm->type == mswIcon_bitmap ) {
		if( disabled ) {   
			col = color2;
		} else {
			col = color1;
		}
		memset( &bmiInfo->bmiColors[ 0 ], 0, sizeof( RGBQUAD ));
                bmiInfo->bmiColors[ 1 ].rgbRed = GetRValue( col );
                bmiInfo->bmiColors[ 1 ].rgbGreen = GetGValue( col );
                bmiInfo->bmiColors[ 1 ].rgbBlue = GetBValue( col );
    } else {
		if( disabled ) {
			/* create a gray scale palette */
			for( i = 0; i < bm->colorcnt; i ++ ) {
				if (i != bm->transparent) {
					byt = (30 * bm->colormap[i].rgbRed +
						59 * bm->colormap[i].rgbGreen +
						11 * bm->colormap[i].rgbBlue) / 100;

					/* if totally black, use a dark gray */
					if (byt == 0)
						byt = 0x66;

					bmiInfo->bmiColors[i].rgbRed = byt;
					bmiInfo->bmiColors[i].rgbGreen = byt;
					bmiInfo->bmiColors[i].rgbBlue = byt;
				}
			}
	    } else {
            /* copy the palette */
            memcpy( (void *)bmiInfo->bmiColors, (void *)bm->colormap, bm->colorcnt * sizeof( RGBQUAD ));
        }
		memset( &bmiInfo->bmiColors[ bm->transparent ], 0, sizeof( RGBQUAD ));
    }

    /* show the bitmap */
    StretchDIBits(hDc, offw, offh,
				 (int)ceil(bmiInfo->bmiHeader.biWidth*scaleIcon),
	             (int)ceil(bmiInfo->bmiHeader.biHeight*scaleIcon),
                  0, 0,
                  bmiInfo->bmiHeader.biWidth,
                  bmiInfo->bmiHeader.biHeight,
                  bm->pixels, bmiInfo,
                  DIB_RGB_COLORS, SRCPAINT);

    /* forget the data */
    free( bmiInfo );
}

/**
 * Create a two color bitmap. This creates a two color icon. Pixels set to 1 are painted 
 * in the specified color, pixels set to 0 are transparent
 * in order to convert the format, a lot of bit fiddling is necessary. The order of 
 * scanlines needs to be reversed and the bit order (high order - low order) is reversed 
 * as well.
 * \param w IN width in pixels
 * \param h IN height in pixels
 * \param bits IN pixel data
 * \param color IN color for foreground
 * \return    pointer to icon
 */

wIcon_p wIconCreateBitMap( wWinPix_t w, wWinPix_t h, const char * bits, wDrawColor color )
{
	int lineLength;
	int i, j;
	unsigned char *dest;
	static unsigned char revbits[] = { 0, 0x08, 0x04, 0x0C, 0x02, 0x0A, 0x06, 0x0E, 0x01, 0x09, 0x05, 0x0D, 0x03, 0x0B, 0x07, 0x0F };  
	unsigned long col = wDrawGetRGB( color );

	wIcon_p ip;
	ip = (wIcon_p)malloc( sizeof *ip );
	if( !ip ) {
		fprintf( stderr, "Couldn't allocate memory for bitmap header.\n" );
		abort();
	}

	memset( ip, 0, sizeof *ip );
	ip->type = mswIcon_bitmap;
	ip->w = w;
	ip->h = h;
	ip->colorcnt = 2;

	/* set up our two color palette */
	ip->colormap = malloc( 2 * sizeof( RGBQUAD ));

	ip->colormap[ 1 ].rgbBlue = col & 0xFF;
	ip->colormap[ 1 ].rgbRed = (col>>16) & 0xFF;
	ip->colormap[ 1 ].rgbGreen = (col>>8) & 0xFF;
	ip->colormap[ 1 ].rgbReserved = 0;	

	color = GetSysColor( COLOR_BTNFACE );
	ip->colormap[ 0 ].rgbBlue = GetBValue( color );
	ip->colormap[ 0 ].rgbRed = GetRValue( color );
	ip->colormap[ 0 ].rgbGreen = GetGValue( color );
	ip->colormap[ 0 ].rgbReserved = 0;	

	lineLength = (((( ip->w + 7 ) / 8 ) + 3 ) >> 2 ) << 2;
	ip->pixels = malloc( lineLength * ip->h );
	if( !ip->pixels ) {
		fprintf( stderr, "Couldn't allocate memory for pixel data.\n" );
		abort();
	}

	/* 
	 * copy the bits from source to the buffer, at this time the order of
	 * scanlines is reversed by starting with the last source line.
	 */
	for( i = 0; i < ip->h; i++ ) {
		dest = ip->pixels + i * lineLength;
		memcpy( dest, bits + ( ip->h - i - 1 ) * (( ip->w + 7) / 8), ( ip->w + 7 ) / 8 );

		/*
		 * and now, the bit order is changed, this is done via a lookup table
		 */
		for( j = 0; j < lineLength; j++ )
		{
			unsigned byte = dest[ j ];
			unsigned low = byte & 0x0F;
			unsigned high = (byte & 0xF0) >> 4;
			dest[ j ] = revbits[ low ]<<4 | revbits[ high ];
		}
	}

	return ip;
}

/**
 * Create a pixmap. This functions interprets a XPM icon contained in a
 * char array. Supported format are one or two byte per pixel and #rrggbb
 * or #rrrrggggbbbb color specification. Color 'None' is interpreted as
 * transparency, other symbolic names are not supported.
 *
 * \param pm IN XPM variable
 * \return    pointer to icon, call free() if not needed anymore. 
 */

wIcon_p wIconCreatePixMap( char *pm[])
{
	wIcon_p ip;
	int col, r, g, b;
	size_t len;
	int width, height;
	char buff[3];
	char * cp, * cq, * ptr;
	int i, j, k;
	size_t lineLength;
	unsigned *keys;
	unsigned numchars;
	unsigned pixel;

	ip = (wIcon_p)malloc( sizeof *ip );
	if( !ip ) {
		fprintf( stderr, "Couldn't allocate memory for bitmap header.\n" );
		abort();
	}

	memset( ip, 0, sizeof *ip );
	ip->type = mswIcon_pixmap;

	/* extract values */
	cp = pm[0];
	width = (int)strtol(cp, &cq, 10 );			/* width of image */
	height = (int)strtol(cq, &cq, 10 );			/* height of image */
	col = (int)strtol(cq, &cq, 10 );			/* number of colors used */
	numchars = (int)strtol(cq, &cq, 10 );		/* get number of chars per pixel */
	
	ip->colormap = malloc( col * sizeof( RGBQUAD ));
	ip->w = width;	
	ip->h = height;
	ip->colorcnt = col;								/* number of colors used */

	keys = malloc( sizeof( unsigned ) * col );

	for ( col=0; col<(int)ip->colorcnt; col++ ) {
		ptr = strdup( pm[col+1] );				/* create duplicate for input string*/

		if( numchars == 1 ) {
			keys[ col ] = (unsigned)ptr[0];
		}
		else if( numchars == 2 ) {
				keys[ col ] = (unsigned) ( ptr[ 0 ] + ptr[ 1 ] * 256 );
		}
		
		cp = strtok( ptr + numchars, "\t " );	/* cp points to color type */
		assert( *cp == 'c' );					/* should always be color */
		
		cp = strtok( NULL, "\t " );				/* go to next token, the color definition itself */

		if( *cp == '#' ) {						/* is this a hex RGB specification? */
			len = strlen( cp+1 ) / 3;
			assert( len == 4 || len == 2 );		/* expecting three 2 char or 4 char values */	
			buff[2] = 0;						/* if yes, extract the values */
			memcpy( buff, cp + 1, 2 );
			r = (int)strtol(buff, &cq, 16);
			memcpy( buff, cp + 1 + len, 2 );
			g = (int)strtol(buff, &cq, 16);
			memcpy( buff, cp + 1 + 2 * len, 2 );
			b = (int)strtol(buff, &cq, 16);

			ip->colormap[ col ].rgbBlue = b;
			ip->colormap[ col ].rgbGreen = g;
			ip->colormap[ col ].rgbRed = r;
			ip->colormap[ col ].rgbReserved = 0;

		} else {
			if( !stricmp( cp, "none" )) {			/* special case transparency*/
				ip->transparent = col;
			}
			else 
				assert( *cp == '#' );				/* if no, abort for the moment */
		}
		free( ptr );
	}

	/* get memory for the pixel data */
	/* dword align begin of line */
	lineLength = ((ip->w + 3 ) >> 2 ) << 2;
	ip->pixels = malloc( lineLength * ip->h );
	if( !ip->pixels ) {
		fprintf( stderr, "Couldn't allocate memory for pixel data.\n" );
		abort();
	}

	/* 
	   convert the XPM pixel data to indexes into color table
	   at the same time the order of rows is reversed 
	   Win32 should be able to do that but I couldn't find out
	   how, so this is coded by hand. 
	*/

	/* for all rows */
	for( i = 0; i < ip->h; i++ ) {
		
		cq = ip->pixels + lineLength * i;
		/* get the next row */
		cp = pm[ ip->h - i + ip->colorcnt ];
		/* for all pixels in row */
		for( j = 0; j < ip->w; j++ ) {
			/* get the pixel info */
			if( numchars == 1 )
				pixel = ( unsigned )*cp;
			else
				pixel = (unsigned) (*cp + *(cp+1)*256);
			cp += numchars;

			/* look up pixel info in color table */
			k = 0;
			while(k < col && pixel != keys[ k ] )
				k++;
			if (pixel == keys[k]) {
				/* save the index into color table */
				*(cq + j) = k;
			} else {
				*(cq + j) = 0;
			}
		}
	}		
	free( keys );
		
	return ip;
}

void wIconSetColor( wIcon_p ip, wDrawColor color )
{
	unsigned long col = wDrawGetRGB( color );

	if( ip->type == mswIcon_bitmap ) {
		ip->colormap[ 1 ].rgbBlue = col & 0xFF;
		ip->colormap[ 1 ].rgbRed = (col>>16) & 0xFF;
		ip->colormap[ 1 ].rgbGreen = (col>>8) & 0xFF;
	}
}

/**
 * Draw icon to screen.
 *
 * \param d IN drawing area
 * \param bm IN bitmap to draw
 * \param x IN x position 
 * \param y IN y position
 */

void
wIconDraw( wDraw_p d, wIcon_p bm, wWinPix_t x, wWinPix_t y )
{
	mswDrawIcon( d->hDc, (int)x, (int)y, bm, FALSE, 0, 0 );
}

/**
 * Create a static control for displaying a bitmap.
 *
 * \param parent IN parent window
 * \param x, y   IN position in parent window
 * \param option IN ignored for now
 * \param iconP  IN icon to use
 * \return    the control
 */

wControl_p
wBitmapCreate( wWin_p parent, wWinPix_t x, wWinPix_t y, long option, const struct wIcon_t * iconP )
{
	wBitmap_p control;
	int index;
	DWORD style = SS_OWNERDRAW | WS_VISIBLE | WS_CHILD;

	control = mswAlloc( parent, B_BITMAP, NULL, sizeof( struct wBitmap_t ), NULL, &index );
	mswComputePos( (wControl_p)control, x, y );
	control->option = option;

	control->hWnd = CreateWindow( "STATIC", NULL,
						style, control->x, control->y,
						iconP->w, iconP->h,
						((wControl_p)parent)->hWnd, (HMENU)(UINT_PTR)index, mswHInst, NULL );

	if (control->hWnd == NULL) {
		mswFail("CreateWindow(BITMAP)");
		return (wControl_p)control;
	}
	control->h = iconP->h;
	control->w = iconP->w;
	control->data = (void*)iconP;

	return (wControl_p)control;
}