Changeset 1167ad34 in mainline

Timestamp:

2021-05-06T17:28:27Z (4 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ae634f4

Parents:

43ffecf

Message:

Add clipping demo

File:

• uspace/app/gfxdemo/gfxdemo.c (modified) (3 diffs)

uspace/app/gfxdemo/gfxdemo.c

@@ -665 +665 @@
 }
 
-/** Run demo loop on a graphic context.
+/** Run clipping demo on a graphic context.
  *
  * @param gc Graphic context
@@ -671 +671 @@
  * @param h Height
  */
+static errno_t demo_clip(gfx_context_t *gc, gfx_coord_t w, gfx_coord_t h)
+{
+        gfx_bitmap_t *bitmap;
+        gfx_color_t *color;
+        gfx_bitmap_params_t params;
+        int i, j;
+        gfx_coord2_t offs;
+        gfx_rect_t rect;
+        errno_t rc;
+
+        if (quit)
+                return EOK;
+
+        rc = clear_scr(gc, w, h);
+        if (rc != EOK)
+                return rc;
+
+        gfx_bitmap_params_init(&params);
+        params.rect.p0.x = 0;
+        params.rect.p0.y = 0;
+        params.rect.p1.x = 40;
+        params.rect.p1.y = 20;
+
+        rc = gfx_bitmap_create(gc, &params, NULL, &bitmap);
+        if (rc != EOK)
+                return rc;
+
+        rc = bitmap_moire(bitmap, 40, 20);
+        if (rc != EOK)
+                goto error;
+
+        for (j = 0; j < 10; j++) {
+                rect.p0.x = w / 8;
+                rect.p0.y = h / 8;
+                rect.p1.x = w * 7 / 8;
+                rect.p1.y = h * 3 / 8;
+
+                rc = gfx_set_clip_rect(gc, &rect);
+                if (rc != EOK)
+                        return rc;
+
+                rc = gfx_color_new_rgb_i16(rand() % 0x10000, rand() % 0x10000,
+                    rand() % 0x10000, &color);
+                if (rc != EOK)
+                        return rc;
+
+                rc = gfx_set_color(gc, color);
+                if (rc != EOK)
+                        return rc;
+
+                for (i = 0; i < 10; i++) {
+                        rect.p0.x = rand() % (w - 1);
+                        rect.p0.y = rand() % (h - 1);
+                        rect.p1.x = rect.p0.x + rand() % (w - 1 - rect.p0.x);
+                        rect.p1.y = rect.p0.y + rand() % (h - 1 - rect.p0.y);
+
+                        rc = gfx_fill_rect(gc, &rect);
+                        if (rc != EOK)
+                                return rc;
+                }
+
+                gfx_color_delete(color);
+
+                rect.p0.x = w / 8;
+                rect.p0.y = h * 5 / 8;
+                rect.p1.x = w * 7 / 8;
+                rect.p1.y = h * 7 / 8;
+
+                rc = gfx_set_clip_rect(gc, &rect);
+                if (rc != EOK)
+                        return rc;
+
+                for (i = 0; i < 10; i++) {
+                        offs.x = rand() % (w - 40);
+                        offs.y = rand() % (h - 20);
+
+                        rc = gfx_bitmap_render(bitmap, NULL, &offs);
+                        if (rc != EOK)
+                                goto error;
+                }
+
+                fibril_usleep(500 * 1000);
+
+                if (quit)
+                        break;
+        }
+
+        (void) gfx_set_clip_rect(gc, NULL);
+        gfx_bitmap_destroy(bitmap);
+        return EOK;
+error:
+        (void) gfx_set_clip_rect(gc, NULL);
+        gfx_bitmap_destroy(bitmap);
+        return rc;
+}
+
+
+/** Run demo loop on a graphic context.
+ *
+ * @param gc Graphic context
+ * @param w Width
+ * @param h Height
+ */
 static errno_t demo_loop(gfx_context_t *gc, gfx_coord_t w, gfx_coord_t h)
 {
@@ -693 +796 @@
 
                 rc = demo_text(gc, w, h);
+                if (rc != EOK)
+                        return rc;
+
+                rc = demo_clip(gc, w, h);
                 if (rc != EOK)
                         return rc;