From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH v3 1/4] GUI: Add a function to draw vertical/horizontal bars
Date: Mon, 27 Jun 2016 21:27:56 -0700 [thread overview]
Message-ID: <1467088079-476-1-git-send-email-andrew.smirnov@gmail.com> (raw)
Add a function to draw solid vertical or horizontal bars.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
Changes since v2:
- Negative coordinates now mean edge of the screen instead of
being a bug.
include/gui/graphic_utils.h | 3 +++
lib/gui/graphic_utils.c | 29 +++++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/include/gui/graphic_utils.h b/include/gui/graphic_utils.h
index 231b3a9..279fdf9 100644
--- a/include/gui/graphic_utils.h
+++ b/include/gui/graphic_utils.h
@@ -28,4 +28,7 @@ void gu_invert_area(struct fb_info *info, void *buf, int startx, int starty, int
void gu_screen_blit_area(struct screen *sc, int startx, int starty, int width,
int height);
+void gu_fill_rectangle(struct screen *sc,
+ int x1, int y1, int x2, int y2,
+ u8 r, u8 g, u8 b, u8 a);
#endif /* __GRAPHIC_UTILS_H__ */
diff --git a/lib/gui/graphic_utils.c b/lib/gui/graphic_utils.c
index 2fe9fa3..d3f5cce 100644
--- a/lib/gui/graphic_utils.c
+++ b/lib/gui/graphic_utils.c
@@ -336,3 +336,32 @@ void gu_screen_blit(struct screen *sc)
if (info->screen_base_shadow)
memcpy(info->screen_base, info->screen_base_shadow, sc->fbsize);
}
+
+void gu_fill_rectangle(struct screen *sc,
+ int x1, int y1, int x2, int y2,
+ u8 r, u8 g, u8 b, u8 a)
+{
+ int y;
+ void *buf = gui_screen_render_buffer(sc);
+
+ x1 = max(0, x1);
+ y1 = max(0, y1);
+
+ x2 = (x2 < 0) ? sc->info->xres - 1 : x2;
+ y2 = (y2 < 0) ? sc->info->yres - 1 : y2;
+
+ if (x2 < x1)
+ swap(x1, x2);
+ if (y2 < y1)
+ swap(y1, y2);
+
+ for(y = y1; y <= y2; y++) {
+ int x;
+ unsigned char *pixel = buf + y * sc->info->line_length +
+ x1 * (sc->info->bits_per_pixel / 8);
+ for(x = x1; x <= x2; x++) {
+ gu_set_rgba_pixel(sc->info, pixel, r, g, b, a);
+ pixel += sc->info->bits_per_pixel / 8;
+ }
+ }
+}
--
2.5.5
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next reply other threads:[~2016-06-28 4:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-28 4:27 Andrey Smirnov [this message]
2016-06-28 4:27 ` [PATCH v3 2/4] GUI: Add code to draw simple graphics Andrey Smirnov
2016-06-28 4:27 ` [PATCH v3 3/4] video/edid: Move int_sqrt() out Andrey Smirnov
2016-06-28 4:27 ` [PATCH v3 4/4] GUI: Add fbtest command Andrey Smirnov
2016-06-30 6:34 ` [PATCH v3 1/4] GUI: Add a function to draw vertical/horizontal bars Sascha Hauer
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