diff options
Diffstat (limited to 'lib/libgfx/src')
-rw-r--r-- | lib/libgfx/src/draw.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/libgfx/src/draw.c b/lib/libgfx/src/draw.c index 784110a..43e0f08 100644 --- a/lib/libgfx/src/draw.c +++ b/lib/libgfx/src/draw.c @@ -182,3 +182,43 @@ gfx_draw_shape(struct gfx_ctx *ctx, const struct gfx_shape *shape) return -1; } + +/* + * Copy a region on one part of a screen to + * another part of a screen. + * + * @ctx: Graphics context pointer + * @r: Region to copy + * @x: X position for copy dest + * @y: Y position for copy dest + */ +int +gfx_copy_region(struct gfx_ctx *ctx, struct gfx_region *r, scrpos_t x, scrpos_t y) +{ + struct gfx_point point; + color_t pixel; + scrpos_t src_cx, src_cy; + dimm_t w, h; + + if (ctx == NULL || r == NULL) { + return -EINVAL; + } + + w = r->width; + h = r->height; + + for (int xoff = 0; xoff < w; ++xoff) { + for (int yoff = 0; yoff < h; ++yoff) { + /* Source position */ + src_cx = r->x + xoff; + src_cy = r->y + yoff; + + /* Plot the new pixel */ + pixel = gfx_get_pix(ctx, src_cx, src_cy); + point.x = x + xoff; + point.y = y + yoff; + point.rgb = pixel; + gfx_plot_point(ctx, &point); + } + } +} |