video: Add a function to draw a rectangle
Provide a way to draw an unfilled box of a certain width. This is useful
for grouping menu items together.
Add a comment showing how to see the copy-framebuffer, for testing.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 1c372bd..53641fc 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -26,6 +26,7 @@
#ifdef CONFIG_SANDBOX
#include <asm/sdl.h>
#endif
+#include "vidconsole_internal.h"
/*
* Theory of operation:
@@ -216,6 +217,40 @@
return 0;
}
+int video_draw_box(struct udevice *dev, int x0, int y0, int x1, int y1,
+ int width, u32 colour)
+{
+ struct video_priv *priv = dev_get_uclass_priv(dev);
+ int pbytes = VNBYTES(priv->bpix);
+ void *start, *line;
+ int pixels = x1 - x0;
+ int row;
+
+ start = priv->fb + y0 * priv->line_length;
+ start += x0 * pbytes;
+ line = start;
+ for (row = y0; row < y1; row++) {
+ void *ptr = line;
+ int i;
+
+ for (i = 0; i < width; i++)
+ fill_pixel_and_goto_next(&ptr, colour, pbytes, pbytes);
+ if (row < y0 + width || row >= y1 - width) {
+ for (i = 0; i < pixels - width * 2; i++)
+ fill_pixel_and_goto_next(&ptr, colour, pbytes,
+ pbytes);
+ } else {
+ ptr += (pixels - width * 2) * pbytes;
+ }
+ for (i = 0; i < width; i++)
+ fill_pixel_and_goto_next(&ptr, colour, pbytes, pbytes);
+ line += priv->line_length;
+ }
+ video_damage(dev, x0, y0, x1 - x0, y1 - y0);
+
+ return 0;
+}
+
int video_reserve_from_bloblist(struct video_handoff *ho)
{
if (!ho->fb || ho->size == 0)
@@ -481,6 +516,7 @@
video_flush_dcache(vid, true);
#if defined(CONFIG_VIDEO_SANDBOX_SDL)
+ /* to see the copy framebuffer, use priv->copy_fb */
sandbox_sdl_sync(priv->fb);
#endif
priv->last_sync = get_timer(0);