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Taskbar: thumbnails (alignment)

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This commit is contained in:
o9000
2017-11-14 12:58:42 +01:00
parent 01de174919
commit bc4af51e82
2 changed files with 32 additions and 14 deletions
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23
src/util/window.c
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@@ -360,12 +360,26 @@ char *get_window_name(Window win)
cairo_surface_t *get_window_thumbnail(Window win)
{
int x, y, w, h;
if (!get_window_coordinates(win, &x, &y, &w, &h))
if (!get_window_coordinates(win, &x, &y, &w, &h) || !w || !h)
return NULL;
int tw, th;
th = 128;
tw = w * th / h;
double sx, sy;
double ox, oy;
tw = 210;
th = h * tw / w;
if (th > tw * 0.618) {
th = (int)(tw * 0.618);
sy = th/(double)h;
double fw = w * th / h;
sx = fw / w;
ox = (tw - fw) / 2;
oy = 0;
} else {
sx = tw/(double)w;
sy = th/(double)h;
ox = oy = 0;
}
XWindowAttributes wa;
if (!XGetWindowAttributes(server.display, win, &wa))
@@ -376,7 +390,8 @@ cairo_surface_t *get_window_thumbnail(Window win)
cairo_surface_t *image_surface = cairo_surface_create_similar_image(x11_surface, CAIRO_FORMAT_ARGB32, tw, th);
cairo_t *cr = cairo_create(image_surface);
cairo_scale(cr, tw/(double)w, th/(double)h);
cairo_translate(cr, ox, oy);
cairo_scale(cr, sx, sy);
cairo_set_source_surface(cr, x11_surface, 0, 0);
cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BEST);
cairo_paint(cr);