4 static int get_num(char* msg);
5 static void get_coord(char* msg,point *p);
6 static void get_rect(char* msg, point *p1, point *p2);
7 static void compute_center_coord(point p1, point p2, point *center);
8 static xlib_colormap * xlib_get_colormap (Colormap id, Visual *visual, MagnifierData *data);
9 static guint32 mask_table[] = {
10 0x00000000, 0x00000001, 0x00000003, 0x00000007,
11 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
12 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
13 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
14 0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
15 0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
16 0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
17 0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
21 void parse_message(char *msg, MagnifierData *data){
24 point roi_pos, roi_size;
25 point mag_pos, mag_size;
29 fprintf(stderr,"corrupted message, discarding\n");
32 type = atoi((char*)&msg[1]);
35 old_factor = data->factor;
36 data->factor = get_num(msg);
37 printf("FACTOR = %d\n",data->factor);
40 data->contrast = get_num(msg);
41 printf("CONTRAST = %d\n",data->contrast);
44 data->follow_mouse = get_num(msg);
45 printf("FOLLOW_MOUSE = %d\n",data->follow_mouse);
48 data->color_inverted = get_num(msg);
49 printf("COLOR_INVERTED = %d\n",data->color_inverted);
52 get_coord(msg, &data->center);
53 printf("GOTO = (%d,%d)\n", data->center.x, data->center.y);
56 get_rect (msg, &roi_pos, &roi_size);
57 printf("ROI = (%d,%d; %d,%d)\n", roi_pos.x, roi_pos.y, roi_size.x, roi_size.y);
58 compute_center_coord (roi_pos, roi_size, &data->center);
61 get_rect (msg, &mag_pos, &mag_size);
62 printf("EXTENTS = (%d,%d; %d,%d)\n", mag_pos.x, mag_pos.y, mag_size.x, mag_size.y);
63 data->mag_width = mag_size.x;
64 data->mag_height = mag_size.y;
65 gdk_window_move_resize (data->output_window->window, mag_pos.x,
67 data->mag_width, data->mag_height);
79 static int get_num(char* msg){
81 sscanf(msg,"~%d:%d:",&type,&num);
85 static void get_coord(char* msg,point *p){
87 sscanf(msg,"~%d:%d,%d:",&type,&p->x,&p->y);
90 static void get_rect(char* msg, point *p1, point *p2){
92 sscanf(msg,"~%d:%d,%d;%d,%d:",&type, &p1->x, &p1->y, &p2->x, &p2->y);
95 static void compute_center_coord (point pos, point size, point *center) {
96 center->x = pos.x + (size.x/2);
97 center->y = pos.y + (size.y/2);
100 int display_image(gpointer data)
102 MagnifierData *mag_data = (MagnifierData *)data;
103 update_image(mag_data);
104 gdk_pixbuf_scale(image,
108 DisplayWidth (mag_data->target_display,screen_num),
109 DisplayHeight(mag_data->target_display,screen_num),
116 gdk_pixbuf_render_to_drawable (scaled_image,
117 drawing_area->window,
118 drawing_area->style->fg_gc[GTK_STATE_NORMAL],
119 0,0,0,0,DisplayWidth (mag_data->target_display,screen_num),
120 DisplayHeight(mag_data->target_display,screen_num),
121 GDK_RGB_DITHER_NORMAL,0,0);
125 void update_image(MagnifierData *mag_data)
127 int x, y, total_width, total_height;
129 if(mag_data->follow_mouse){
130 Window root_return, child_return;
131 int win_x_return,win_y_return;
132 unsigned int mask_return;
133 XQueryPointer(mag_data->source_display,image_root_window,
134 &root_return,&child_return,
135 &mag_data->center.x,&mag_data->center.y,
136 &win_x_return,&win_y_return,&mask_return);
139 total_width = DisplayWidth (mag_data->source_display,screen_num);
140 total_height = DisplayHeight(mag_data->source_display,screen_num);
142 x = mag_data->center.x - mag_data->mag_width/mag_data->factor/2;
143 y = mag_data->center.y - mag_data->mag_height/mag_data->factor/2;
145 if(mag_data->center.x < mag_data->mag_width/mag_data->factor/2)
147 if(mag_data->center.x > (total_width - mag_data->mag_width/mag_data->factor/2))
148 x = total_width - mag_data->mag_width/mag_data->factor;
149 if(mag_data->center.y < mag_data->mag_height/mag_data->factor/2)
151 if(mag_data->center.y > (total_height - mag_data->mag_height/mag_data->factor/2))
152 y = total_height - mag_data->mag_height/mag_data->factor;
158 printf("p = (%d,%d), x,y = (%d,%d), h,w = (%d,%d), ht,wt = (%d,%d)\n",
162 mag_data->mag_height,mag_data->mag_width,
166 if(mag_data->factor != old_factor){
167 g_object_unref((GObject *)image);
168 image = gdk_pixbuf_new (GDK_COLORSPACE_RGB,FALSE, 8,
169 DisplayWidth (mag_data->target_display,screen_num)/mag_data->factor,
170 DisplayHeight(mag_data->target_display,screen_num)/mag_data->factor);
171 /* yes, use target display above, since the size of the area grabbed depends on the target */
172 old_factor = mag_data->factor;
174 get_root_image(image_root_window,
180 void expose_event(GtkWidget * w, GdkEventExpose *event, gpointer data){
187 /* Image grabbing and convertion routines from gdk-pixbuf-xlib */
189 convert 1 bits-pixel data
193 rgb1 (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
199 register guint8 data;
201 guint8 *srow = image->data, *orow = pixels;
203 /* convert upto 8 pixels/time */
204 /* its probably not worth trying to make this run very fast, who uses
205 1 bit displays anymore? */
206 width = image->width;
207 height = image->height;
208 bpl = image->bytes_per_line;
210 for (yy = 0; yy < height; yy++) {
214 for (xx = 0; xx < width; xx ++) {
215 data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
216 *o++ = colormap->colors[data].red;
217 *o++ = colormap->colors[data].green;
218 *o++ = colormap->colors[data].blue;
226 convert 1 bits/pixel data
230 rgb1a (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
236 register guint8 data;
238 guint8 *srow = image->data, *orow = pixels;
241 /* convert upto 8 pixels/time */
242 /* its probably not worth trying to make this run very fast, who uses
243 1 bit displays anymore? */
244 width = image->width;
245 height = image->height;
246 bpl = image->bytes_per_line;
248 for (xx = 0; xx < 2; xx++) {
250 remap[xx] = 0xff000000
251 | colormap->colors[xx].blue << 16
252 | colormap->colors[xx].green << 8
253 | colormap->colors[xx].red;
256 | colormap->colors[xx].red << 24
257 | colormap->colors[xx].green << 16
258 | colormap->colors[xx].blue << 8;
262 for (yy = 0; yy < height; yy++) {
266 for (xx = 0; xx < width; xx ++) {
267 data = srow[xx >> 3] >> (7 - (xx & 7)) & 1;
276 convert 8 bits/pixel data
280 rgb8 (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
286 register guint32 data;
287 guint8 *srow = image->data, *orow = pixels;
291 width = image->width;
292 height = image->height;
293 bpl = image->bytes_per_line;
295 mask = mask_table[image->depth];
297 for (yy = 0; yy < height; yy++) {
300 for (xx = 0; xx < width; xx++) {
302 *o++ = colormap->colors[data].red;
303 *o++ = colormap->colors[data].green;
304 *o++ = colormap->colors[data].blue;
312 convert 8 bits/pixel data
316 rgb8a (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
322 register guint32 data;
324 register guint8 *s; /* read 2 pixels at once */
326 guint8 *srow = image->data, *orow = pixels;
328 width = image->width;
329 height = image->height;
330 bpl = image->bytes_per_line;
332 mask = mask_table[image->depth];
334 for (xx = 0; xx < colormap->size; xx++) {
336 remap[xx] = 0xff000000
337 | colormap->colors[xx].blue << 16
338 | colormap->colors[xx].green << 8
339 | colormap->colors[xx].red;
342 | colormap->colors[xx].red << 24
343 | colormap->colors[xx].green << 16
344 | colormap->colors[xx].blue << 8;
348 for (yy = 0; yy < height; yy++) {
350 o = (guint32 *) orow;
351 for (xx = 0; xx < width; xx ++) {
361 convert 16 bits/pixel data
366 rgb565lsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
373 register guint32 *s; /* read 2 pixels at once */
375 register guint8 *s; /* read 2 pixels at once */
378 guint8 *srow = image->data, *orow = pixels;
380 width = image->width;
381 height = image->height;
382 bpl = image->bytes_per_line;
384 for (yy = 0; yy < height; yy++) {
386 s = (guint32 *) srow;
390 o = (guint16 *) orow;
391 for (xx = 1; xx < width; xx += 2) {
392 register guint32 data;
395 *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
396 | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
397 *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
398 | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
399 *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
400 | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
402 /* swap endianness first */
403 data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
405 *o++ = (data & 0xf800) | (data & 0xe000) >> 5
406 | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
407 *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
408 | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
409 *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
410 | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
413 /* check for last remaining pixel */
415 register guint16 data;
417 data = *((short *) s);
419 data = *((short *) s);
420 data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
422 ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
423 ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
424 ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
432 convert 16 bits/pixel data
437 rgb565msb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
444 register guint8 *s; /* need to swap data order */
446 register guint32 *s; /* read 2 pixels at once */
449 guint8 *srow = image->data, *orow = pixels;
451 width = image->width;
452 height = image->height;
453 bpl = image->bytes_per_line;
455 for (yy = 0; yy < height; yy++) {
459 s = (guint32 *) srow;
461 o = (guint16 *) orow;
462 for (xx = 1; xx < width; xx += 2) {
463 register guint32 data;
465 /* swap endianness first */
466 data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
468 *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
469 | (data & 0x7e0) << 5 | (data & 0x600) >> 1;
470 *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
471 | (data & 0xf8000000) >> 16 | (data & 0xe0000000) >> 21;
472 *o++ = (data & 0x7e00000) >> 19 | (data & 0x6000000) >> 25
473 | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
476 *o++ = (data & 0xf800) | (data & 0xe000) >> 5
477 | (data & 0x7e0) >> 3 | (data & 0x600) >> 9;
478 *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
479 | (data & 0xf8000000) >> 24 | (data & 0xe0000000) >> 29;
480 *o++ = (data & 0x7e00000) >> 11 | (data & 0x6000000) >> 17
481 | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
484 /* check for last remaining pixel */
486 register guint16 data;
488 data = *((short *) s);
489 data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
491 data = *((short *) s);
493 ((char *) o)[0] = ((data >> 8) & 0xf8) | ((data >> 13) & 0x7);
494 ((char *) o)[1] = ((data >> 3) & 0xfc) | ((data >> 9) & 0x3);
495 ((char *) o)[2] = ((data << 3) & 0xf8) | ((data >> 2) & 0x7);
503 convert 16 bits/pixel data
508 rgb565alsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
515 register guint16 *s; /* read 1 pixels at once */
521 guint8 *srow = image->data, *orow = pixels;
523 width = image->width;
524 height = image->height;
525 bpl = image->bytes_per_line;
527 for (yy = 0; yy < height; yy++) {
529 s = (guint16 *) srow;
533 o = (guint32 *) orow;
534 for (xx = 0; xx < width; xx ++) {
535 register guint32 data;
536 /* rrrrrggg gggbbbbb -> rrrrrRRR ggggggGG bbbbbBBB aaaaaaaa */
537 /* little endian: aaaaaaaa bbbbbBBB ggggggGG rrrrrRRR */
540 *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
541 | (data & 0x7e0) << 5 | (data & 0x600) >> 1
542 | (data & 0x1f) << 19 | (data & 0x1c) << 14
545 /* swap endianness first */
546 data = s[0] | s[1] << 8;
548 *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
549 | (data & 0x7e0) << 13 | (data & 0x600) << 7
550 | (data & 0x1f) << 11 | (data & 0x1c) << 6
560 convert 16 bits/pixel data
565 rgb565amsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
574 register guint16 *s; /* read 1 pixels at once */
578 guint8 *srow = image->data, *orow = pixels;
580 width = image->width;
581 height = image->height;
582 bpl = image->bytes_per_line;
584 for (yy = 0; yy < height; yy++) {
586 o = (guint32 *) orow;
587 for (xx = 0; xx < width; xx ++) {
588 register guint32 data;
589 /* rrrrrggg gggbbbbb -> rrrrrRRR gggggg00 bbbbbBBB aaaaaaaa */
590 /* little endian: aaaaaaaa bbbbbBBB gggggg00 rrrrrRRR */
592 /* swap endianness first */
593 data = s[0] | s[1] << 8;
595 *o++ = (data & 0xf800) >> 8 | (data & 0xe000) >> 13
596 | (data & 0x7e0) << 5 | (data & 0x600) >> 1
597 | (data & 0x1f) << 19 | (data & 0x1c) << 14
601 *o++ = (data & 0xf800) << 16 | (data & 0xe000) << 11
602 | (data & 0x7e0) << 13 | (data & 0x600) << 7
603 | (data & 0x1f) << 11 | (data & 0x1c) << 6
613 convert 15 bits/pixel data
618 rgb555lsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
625 register guint32 *s; /* read 2 pixels at once */
627 register guint8 *s; /* read 2 pixels at once */
630 guint8 *srow = image->data, *orow = pixels;
632 width = image->width;
633 height = image->height;
634 bpl = image->bytes_per_line;
636 for (yy = 0; yy < height; yy++) {
638 s = (guint32 *) srow;
642 o = (guint16 *) orow;
643 for (xx = 1; xx < width; xx += 2) {
644 register guint32 data;
647 *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
648 | (data & 0x3e0) << 6 | (data & 0x380) << 1;
649 *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
650 | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
651 *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
652 | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
654 /* swap endianness first */
655 data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
657 *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
658 | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
659 *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
660 | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
661 *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
662 | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
665 /* check for last remaining pixel */
667 register guint16 data;
669 data = *((short *) s);
671 data = *((short *) s);
672 data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
674 ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
675 ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
676 ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
684 convert 15 bits/pixel data
689 rgb555msb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
696 register guint8 *s; /* read 2 pixels at once */
698 register guint32 *s; /* read 2 pixels at once */
701 guint8 *srow = image->data, *orow = pixels;
703 width = image->width;
704 height = image->height;
705 bpl = image->bytes_per_line;
707 for (yy = 0; yy < height; yy++) {
709 o = (guint16 *) orow;
710 for (xx = 1; xx < width; xx += 2) {
711 register guint32 data;
713 /* swap endianness first */
714 data = s[0] | s[1] << 8 | s[2] << 16 | s[3] << 24;
716 *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
717 | (data & 0x3e0) << 6 | (data & 0x380) << 1;
718 *o++ = (data & 0x1f) << 3 | (data & 0x1c) >> 2
719 | (data & 0x7c000000) >> 15 | (data & 0x70000000) >> 20;
720 *o++ = (data & 0x3e00000) >> 18 | (data & 0x3800000) >> 23
721 | (data & 0x1f0000) >> 5 | (data & 0x1c0000) >> 10;
724 *o++ = (data & 0x7c00) << 1 | (data & 0x7000) >> 4
725 | (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
726 *o++ = (data & 0x1f) << 11 | (data & 0x1c) << 6
727 | (data & 0x7c000000) >> 23 | (data & 0x70000000) >> 28;
728 *o++ = (data & 0x3e00000) >> 10 | (data & 0x3800000) >> 15
729 | (data & 0x1f0000) >> 13 | (data & 0x1c0000) >> 18;
732 /* check for last remaining pixel */
734 register guint16 data;
736 data = *((short *) s);
737 data = ((data >> 8) & 0xff) | ((data & 0xff) << 8);
739 data = *((short *) s);
741 ((char *) o)[0] = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12;
742 ((char *) o)[1] = (data & 0x3e0) >> 2 | (data & 0x380) >> 7;
743 ((char *) o)[2] = (data & 0x1f) << 3 | (data & 0x1c) >> 2;
751 convert 15 bits/pixel data
756 rgb555alsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
763 register guint16 *s; /* read 1 pixels at once */
769 guint8 *srow = image->data, *orow = pixels;
771 width = image->width;
772 height = image->height;
773 bpl = image->bytes_per_line;
775 for (yy = 0; yy < height; yy++) {
777 s = (guint16 *) srow;
781 o = (guint32 *) orow;
782 for (xx = 0; xx < width; xx++) {
783 register guint32 data;
784 /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
785 /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
788 *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
789 | (data & 0x3e0) << 6 | (data & 0x380) << 1
790 | (data & 0x1f) << 19 | (data & 0x1c) << 14
793 /* swap endianness first */
794 data = s[0] | s[1] << 8;
796 *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
797 | (data & 0x3e0) << 14 | (data & 0x380) << 9
798 | (data & 0x1f) << 11 | (data & 0x1c) << 6
808 convert 15 bits/pixel data
813 rgb555amsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
820 register guint16 *s; /* read 1 pixels at once */
826 guint8 *srow = image->data, *orow = pixels;
828 width = image->width;
829 height = image->height;
830 bpl = image->bytes_per_line;
832 for (yy = 0; yy < height; yy++) {
834 s = (guint16 *) srow;
838 o = (guint32 *) orow;
839 for (xx = 0; xx < width; xx++) {
840 register guint32 data;
841 /* rrrrrggg gggbbbbb -> rrrrrRRR gggggGGG bbbbbBBB aaaaaaaa */
842 /* little endian: aaaaaaaa bbbbbBBB gggggGGG rrrrrRRR */
844 /* swap endianness first */
845 data = s[0] | s[1] << 8;
847 *o++ = (data & 0x7c00) >> 7 | (data & 0x7000) >> 12
848 | (data & 0x3e0) << 6 | (data & 0x380) << 1
849 | (data & 0x1f) << 19 | (data & 0x1c) << 14
853 *o++ = (data & 0x7c00) << 17 | (data & 0x7000) << 12
854 | (data & 0x3e0) << 14 | (data & 0x380) << 9
855 | (data & 0x1f) << 11 | (data & 0x1c) << 6
866 rgb888alsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
872 guint8 *s; /* for byte order swapping */
874 guint8 *srow = image->data, *orow = pixels;
876 width = image->width;
877 height = image->height;
878 bpl = image->bytes_per_line;
881 for (yy = 0; yy < height; yy++) {
884 for (xx = 0; xx < width; xx++) {
897 rgb888lsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
903 guint8 *srow = image->data, *orow = pixels;
906 width = image->width;
907 height = image->height;
908 bpl = image->bytes_per_line;
911 for (yy = 0; yy < height; yy++) {
914 for (xx = 0; xx < width; xx++) {
926 rgb888amsb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
932 guint8 *srow = image->data, *orow = pixels;
937 guint8 *s; /* for byte order swapping */
942 width = image->width;
943 height = image->height;
944 bpl = image->bytes_per_line;
947 for (yy = 0; yy < height; yy++) {
949 s = (guint32 *) srow;
950 o = (guint32 *) orow;
955 for (xx = 0; xx < width; xx++) {
963 *o++ = (*s << 8) | 0xff; /* untested */
973 rgb888msb (XImage *image, guchar *pixels, int rowstride, xlib_colormap *colormap)
979 guint8 *srow = image->data, *orow = pixels;
984 width = image->width;
985 height = image->height;
986 bpl = image->bytes_per_line;
988 for (yy = 0; yy < height; yy++) {
991 for (xx = 0; xx < width; xx++) {
1002 visual_decompose_mask (gulong mask,
1009 while (!(mask & 0x1)) {
1014 while (mask & 0x1) {
1022 This should work correctly with any display/any endianness, but will probably
1026 convert_real_slow (XImage *image, guchar *pixels, int rowstride, xlib_colormap *cmap, int alpha)
1031 guint8 *srow = image->data, *orow = pixels;
1038 int red_shift, red_prec, green_shift, green_prec, blue_shift, blue_prec;
1040 width = image->width;
1041 height = image->height;
1042 bpl = image->bytes_per_line;
1045 visual_decompose_mask (v->red_mask, &red_shift, &red_prec);
1046 visual_decompose_mask (v->green_mask, &green_shift, &green_prec);
1047 visual_decompose_mask (v->blue_mask, &blue_shift, &blue_prec);
1049 for (yy = 0; yy < height; yy++) {
1052 for (xx = 0; xx < width; xx++) {
1053 pixel = XGetPixel (image, xx, yy);
1055 /* I assume this is right for static & greyscale's too? */
1060 *o++ = cmap->colors[pixel].red;
1061 *o++ = cmap->colors[pixel].green;
1062 *o++ = cmap->colors[pixel].blue;
1065 /* This is odd because it must sometimes shift left (otherwise
1066 I'd just shift >> (*_shift - 8 + *_prec + <0-7>). This logic
1067 should work for all bit sizes/shifts/etc. */
1069 for (i = 24; i < 32; i += red_prec)
1070 component |= ((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> i;
1073 for (i = 24; i < 32; i += green_prec)
1074 component |= ((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> i;
1077 for (i = 24; i < 32; i += blue_prec)
1078 component |= ((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> i;
1082 *o++ = cmap->colors[((pixel & v->red_mask) << (32 - red_shift - red_prec)) >> 24].red;
1083 *o++ = cmap->colors[((pixel & v->green_mask) << (32 - green_shift - green_prec)) >> 24].green;
1084 *o++ = cmap->colors[((pixel & v->blue_mask) << (32 - blue_shift - blue_prec)) >> 24].blue;
1095 static xlib_colormap *
1096 xlib_get_colormap (Colormap id, Visual *visual, MagnifierData *mag_data)
1099 xlib_colormap *xc = g_new (xlib_colormap, 1);
1101 xc->size = visual->map_entries;
1102 xc->colors = g_new (XColor, xc->size);
1103 xc->visual = visual;
1106 for (i = 0; i < xc->size; i++) {
1107 xc->colors[i].pixel = i;
1108 xc->colors[i].flags = DoRed | DoGreen | DoBlue;
1111 XQueryColors (mag_data->source_display, xc->colormap, xc->colors, xc->size);
1116 typedef void (* cfunc) (XImage *image, guchar *pixels, int rowstride, xlib_colormap *cmap);
1117 static cfunc convert_map[] = {
1118 rgb1,rgb1,rgb1a,rgb1a,
1119 rgb8,rgb8,rgb8a,rgb8a,
1120 rgb555lsb,rgb555msb,rgb555alsb,rgb555amsb,
1121 rgb565lsb,rgb565msb,rgb565alsb,rgb565amsb,
1122 rgb888lsb,rgb888msb,rgb888alsb,rgb888amsb
1126 rgbconvert (XImage *image, guchar *pixels, int rowstride, int alpha, xlib_colormap *cmap)
1128 int index = (image->byte_order == MSBFirst) | (alpha != 0) << 1;
1129 int bank=5; /* default fallback converter */
1130 Visual *v = cmap->visual;
1133 /* I assume this is right for static & greyscale's too? */
1138 switch (image->bits_per_pixel) {
1148 switch (image->depth) {
1150 if (v->red_mask == 0x7c00 && v->green_mask == 0x3e0 && v->blue_mask == 0x1f
1151 && image->bits_per_pixel == 16)
1155 if (v->red_mask == 0xf800 && v->green_mask == 0x7e0 && v->blue_mask == 0x1f
1156 && image->bits_per_pixel == 16)
1161 if (v->red_mask == 0xff0000 && v->green_mask == 0xff00 && v->blue_mask == 0xff
1162 && image->bits_per_pixel == 32)
1168 /* always use the slow version */
1173 convert_real_slow(image, pixels, rowstride, cmap, alpha);
1176 (* convert_map[index]) (image, pixels, rowstride, cmap);
1182 void get_root_image(Window src,GdkPixbuf *dest, int src_x, int src_y, MagnifierData *mag_data) {
1184 int width = mag_data->mag_width/mag_data->factor;
1185 int height = mag_data->mag_height/mag_data->factor;
1187 /* Get Image in ZPixmap format (packed bits). */
1188 image = XGetImage (mag_data->source_display, src, src_x, src_y,
1189 width, height, AllPlanes, ZPixmap);
1190 g_assert(image != NULL);
1193 XWindowAttributes wa;
1194 XGetWindowAttributes (mag_data->source_display, src, &wa);
1195 x_cmap = xlib_get_colormap (wa.colormap, wa.visual, mag_data);
1197 /* we offset into the image data based on the position we are retrieving from */
1198 rgbconvert (image, gdk_pixbuf_get_pixels(dest),
1199 gdk_pixbuf_get_rowstride(dest),
1200 gdk_pixbuf_get_has_alpha(dest),
1202 XDestroyImage (image);