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003ab067da
...support for transparency. Technically, the sixels do not have transparency, but empty pixels are now rendered with the current background color instead of black to make the them appear transparent. Same goes for the black bars. The current background color makes them disappear. There is one technical limitation with the alpha focus highlight patch. The alpha value and background color is taken from the current background color, so when the window is unfocused, images may have the wrong alpha and/or background color. This can't be fixed easily.
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
sixel_state_t sixel_st;
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void
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dcshandle(void)
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{
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int bgcolor;
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unsigned char r, g, b, a = 255;
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switch (csiescseq.mode[0]) {
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default:
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fprintf(stderr, "erresc: unknown csi ");
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csidump();
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/* die(""); */
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break;
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case 'q': /* DECSIXEL */
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if (IS_TRUECOL(term.c.attr.bg)) {
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r = term.c.attr.bg >> 16 & 255;
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g = term.c.attr.bg >> 8 & 255;
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b = term.c.attr.bg >> 0 & 255;
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} else {
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xgetcolor(term.c.attr.bg, &r, &g, &b);
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#if ALPHA_PATCH
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if (term.c.attr.bg == defaultbg)
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a = dc.col[defaultbg].pixel >> 24 & 255;
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#endif // ALPHA_PATCH
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}
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bgcolor = a << 24 | b << 16 | g << 8 | r;
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if (sixel_parser_init(&sixel_st, 255 << 24, bgcolor, 1, win.cw, win.ch) != 0)
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perror("sixel_parser_init() failed");
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term.mode |= MODE_SIXEL;
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break;
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}
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}
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void
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scroll_images(int n) {
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ImageList *im;
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int tmp;
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/* maximum sixel distance in lines from current view before
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* deallocation
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* TODO: should be in config.h */
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int max_sixel_distance = 10000;
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for (im = term.images; im; im = im->next) {
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im->y += n;
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/* check if the current sixel has exceeded the maximum
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* draw distance, and should therefore be deleted */
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tmp = im->y;
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if (tmp < 0) { tmp = tmp * -1; }
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if (tmp > max_sixel_distance) {
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fprintf(stderr, "im@0x%08x exceeded maximum distance\n");
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im->should_delete = 1;
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}
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}
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}
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