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-rw-r--r--lib/libgfx/src/draw.c40
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);
+ }
+ }
+}