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backend interface: add IMAGE_OP_RESIZE_TILE

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We need this to paint the wallpaper with repeat to mimic the behavior of Xorg's
background pixmap.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
This commit is contained in:
Yuxuan Shui
2019-03-09 18:01:18 +00:00
parent fb155c9769
commit c5d9f459dd
6 changed files with 32 additions and 9 deletions
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13
src/backend/xrender.c
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@@ -76,6 +76,8 @@ struct _xrender_image_data {
// A Picture links to the Pixmap
xcb_render_picture_t pict;
long width, height;
// The effective size of the image
long ewidth, eheight;
bool has_alpha;
double opacity;
xcb_visualid_t visual;
@@ -99,7 +101,7 @@ static void compose(backend_t *base, void *img_data, int dst_x, int dst_y,
x_set_picture_clip_region(base->c, xd->back[xd->curr_back], 0, 0, &reg);
xcb_render_composite(base->c, op, img->pict, alpha_pict, xd->back[xd->curr_back],
0, 0, 0, 0, dst_x, dst_y, img->width, img->height);
0, 0, 0, 0, dst_x, dst_y, img->ewidth, img->eheight);
pixman_region32_fini(&reg);
}
@@ -226,8 +228,8 @@ bind_pixmap(backend_t *base, xcb_pixmap_t pixmap, struct xvisual_info fmt, bool
auto img = ccalloc(1, struct _xrender_image_data);
img->depth = fmt.visual_depth;
img->width = r->width;
img->height = r->height;
img->width = img->ewidth = r->width;
img->height = img->eheight = r->height;
img->pixmap = pixmap;
img->opacity = 1;
img->has_alpha = fmt.alpha_size != 0;
@@ -343,6 +345,7 @@ static bool image_op(backend_t *base, enum image_operations op, void *image,
region_t reg;
double dim_opacity;
double alpha_multiplier;
int *iargs = arg;
if (op == IMAGE_OP_APPLY_ALPHA_ALL) {
alpha_multiplier = *(double *)arg;
img->opacity *= alpha_multiplier;
@@ -414,6 +417,10 @@ static bool image_op(backend_t *base, enum image_operations op, void *image,
alpha_pict, 0, 0, 0, 0, 0, 0, img->width, img->height);
img->has_alpha = true;
break;
case IMAGE_OP_RESIZE_TILE:
img->ewidth = iargs[0];
img->eheight = iargs[1];
break;
case IMAGE_OP_APPLY_ALPHA_ALL: assert(false);
}
pixman_region32_fini(&reg);