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-rw-r--r--lib/libgfx/src/draw.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/libgfx/src/draw.c b/lib/libgfx/src/draw.c
index 9ef8630..784110a 100644
--- a/lib/libgfx/src/draw.c
+++ b/lib/libgfx/src/draw.c
@@ -129,6 +129,34 @@ gfx_plot_point(struct gfx_ctx *ctx, const struct gfx_point *point)
}
/*
+ * Grab the RGB value of a single pixel on
+ * the scren.
+ *
+ * @ctx: Graphics context pointer
+ * @x: X position to sample
+ * @y: Y position to sample
+ */
+color_t
+gfx_get_pix(struct gfx_ctx *ctx, uint32_t x, uint32_t y)
+{
+ const color_t ERROR_COLOR = GFX_BLACK;
+ uint32_t index;
+
+ /* The 'ctx' argument is required */
+ if (ctx == NULL) {
+ return ERROR_COLOR;
+ }
+
+ /* Are we within bounds of the screen */
+ if (gfx_pixel_bounds(ctx, x, y) < 0) {
+ return ERROR_COLOR;
+ }
+
+ index = gfx_io_index(ctx, x, y);
+ return ctx->io[index];
+}
+
+/*
* Draw a shape onto the screen
*
* @ctx: libgfx graphics context