1 files changed, 121 insertions, 0 deletions

diff --git a/libraries/ecore/src/examples/ecore_evas_buffer_example_01.c b/libraries/ecore/src/examples/ecore_evas_buffer_example_01.c
new file mode 100644
index 0000000..af05530
--- /dev/null
+++ b/libraries/ecore/src/examples/ecore_evas_buffer_example_01.c
@@ -0,0 +1,121 @@
+/**
+ * Simple Ecore_Evas example on the Evas buffer engine wrapper
+ * functions.
+ *
+ * You must have Evas compiled with the buffer engine.
+ *
+ * Compile with:
+ *
+ * @verbatim
+ * gcc -o evas-buffer-simple evas-buffer-simple.c `pkg-config --libs --cflags evas evas-software-buffer`
+ * @endverbatim
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+
+#include "config.h"
+#else
+#define __UNUSED__
+#endif
+
+#include <Ecore_Evas.h>
+#include <stdio.h>
+
+#define WIDTH  (320)
+#define HEIGHT (240)
+
+static Ecore_Evas *ee;
+
+/* support function to save scene as PPM image */
+static void
+_scene_save(Evas       *canvas,
+            const char *dest)
+{
+   const unsigned int *pixels, *pixels_end;
+   int width, height;
+   FILE *f;
+
+   evas_output_size_get(canvas, &width, &height);
+
+   f = fopen(dest, "wb+");
+   if (!f)
+     {
+        fprintf(stderr, "ERROR: could not open for writing '%s': %s\n",
+                dest, strerror(errno));
+        return;
+     }
+
+   pixels = ecore_evas_buffer_pixels_get(ee);
+   pixels_end = pixels + (width * height);
+
+   /* PPM P6 format is dead simple to write: */
+   fprintf(f, "P6\n%d %d\n255\n", width, height);
+   for (; pixels < pixels_end; pixels++)
+     {
+        int r, g, b;
+
+        r = ((*pixels) & 0xff0000) >> 16;
+        g = ((*pixels) & 0x00ff00) >> 8;
+        b = (*pixels) & 0x0000ff;
+
+        fprintf(f, "%c%c%c", r, g, b);
+     }
+
+   fclose(f);
+   printf("Saved scene as '%s'\n", dest);
+}
+
+int
+main(void)
+{
+   Evas *canvas;
+   Evas_Object *bg, *r1, *r2, *r3;
+
+   ecore_evas_init();
+
+   ee = ecore_evas_buffer_new(WIDTH, HEIGHT);
+   if (!ee) goto error;
+
+   canvas = ecore_evas_get(ee);
+
+   bg = evas_object_rectangle_add(canvas);
+   evas_object_color_set(bg, 255, 255, 255, 255); /* white bg */
+   evas_object_move(bg, 0, 0); /* at origin */
+   evas_object_resize(bg, WIDTH, HEIGHT); /* covers full canvas */
+   evas_object_show(bg);
+
+   r1 = evas_object_rectangle_add(canvas);
+   evas_object_color_set(r1, 255, 0, 0, 255); /* 100% opaque red */
+   evas_object_move(r1, 10, 10);
+   evas_object_resize(r1, 100, 100);
+   evas_object_show(r1);
+
+   r2 = evas_object_rectangle_add(canvas);
+   evas_object_color_set(r2, 0, 128, 0, 128); /* 50% opaque green */
+   evas_object_move(r2, 10, 10);
+   evas_object_resize(r2, 50, 50);
+   evas_object_show(r2);
+
+   r3 = evas_object_rectangle_add(canvas);
+   evas_object_color_set(r3, 0, 128, 0, 255); /* 100% opaque dark green */
+   evas_object_move(r3, 60, 60);
+   evas_object_resize(r3, 50, 50);
+   evas_object_show(r3);
+
+   ecore_evas_manual_render(ee);
+   _scene_save(canvas, "/tmp/evas-buffer-simple-render.ppm");
+
+   ecore_evas_free(ee);
+   ecore_evas_shutdown();
+
+   return 0;
+
+error:
+   fprintf(stderr, "You got to have at least one Evas engine built"
+                   " and linked up to ecore-evas for this example to run"
+                   " properly.\n");
+   ecore_evas_shutdown();
+   return -1;
+}
+