122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/**
|
|
* 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 ecore_evas_buffer_example_01 ecore_evas_buffer_example_01.c `pkg-config --libs --cflags evas ecore-evas evas-software-buffer`
|
|
* @endverbatim
|
|
*
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
#include "config.h"
|
|
#else
|
|
#define EINA_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;
|
|
}
|
|
|