--- /dev/null
+/**
+ * Simple Evas example illustrating basic objects manipulation.
+ *
+ * You'll need at least one engine built for it (excluding the buffer
+ * one) and the png image loader also built. See stdout/stderr for
+ * output.
+ *
+ * @verbatim
+ * gcc -o evas-events evas-events.c `pkg-config --libs --cflags ecore-evas`
+ * @endverbatim
+ */
+
+#ifdef HAVE_CONFIG_H
+
+#include "config.h"
+#endif
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <stdio.h>
+#include <errno.h>
+
+#define WIDTH (320)
+#define HEIGHT (240)
+
+static const char *img_path = PACKAGE_EXAMPLES_DIR "/enlightenment.png";
+static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png";
+
+struct test_data
+{
+ Ecore_Evas *ee;
+ Evas *canvas;
+ Eina_Bool obscured;
+ Ecore_Timer *resize_timer;
+ Evas_Object *img, *bg, *clipper, *clipper_border, *text;
+};
+
+static struct test_data d = {0};
+
+/* here just to keep our example's window size and background image's
+ * size in synchrony */
+static void
+_canvas_resize_cb(Ecore_Evas *ee)
+{
+ int w, h;
+
+ ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
+ evas_object_resize(d.bg, w, h);
+}
+
+static void
+_on_keydown(void *data __UNUSED__,
+ Evas *evas __UNUSED__,
+ Evas_Object *o __UNUSED__,
+ void *einfo)
+{
+ Evas_Event_Key_Down *ev = einfo;
+
+ if (strcmp(ev->keyname, "h") == 0) /* print help */
+ {
+ fprintf(stdout, "commands are:\n"
+ "\to - change clipper's opacity\n"
+ "\tr - toggle clipper's color between red and white\n"
+ "\tc - toggle clipper's clipping function\n"
+ "\tv - toggle clipper's visibility\n");
+ return;
+ }
+
+ if (strcmp(ev->keyname, "o") == 0) /* change clipper's opacity */
+ {
+ int alpha, r, g, b;
+
+ evas_object_color_get(d.clipper, &r, &g, &b, &alpha);
+ alpha -= 20;
+ if (alpha < 0)
+ alpha = 255;
+
+ evas_object_color_set(d.clipper, r, g, b, alpha);
+
+ fprintf(stdout, "Changing clipper's opacity: %d%%\n",
+ (int)((alpha / 255.0) * 100));
+ return;
+ }
+
+ if (strcmp(ev->keyname, "r") == 0) /* toggle clipper's color
+ * between red and white */
+ {
+ int alpha, r, g, b;
+
+ fprintf(stdout, "Changing clipper's color to");
+
+ evas_object_color_get(d.clipper, &r, &g, &b, &alpha);
+ if (g > 0)
+ {
+ fprintf(stdout, "red\n");
+ g = b = 0;
+ }
+ else
+ {
+ fprintf(stdout, "white\n");
+ g = b = 255;
+ }
+
+ evas_object_color_set(d.clipper, r, g, b, alpha);
+ return;
+ }
+
+ if (strcmp(ev->keyname, "c") == 0) /* toggle clipper's clipping function */
+ {
+ fprintf(stdout, "Toggling clipping ");
+
+ if (evas_object_clip_get(d.img) == d.clipper)
+ {
+ evas_object_clip_unset(d.img);
+ fprintf(stdout, "off\n");
+ }
+ else
+ {
+ evas_object_clip_set(d.img, d.clipper);
+ fprintf(stdout, "on\n");
+ }
+ return;
+ }
+
+ if (strcmp(ev->keyname, "v") == 0) /* toggle clipper's visibility */
+ {
+ fprintf(stdout, "Clipper is now ");
+
+ if (evas_object_visible_get(d.clipper))
+ {
+ evas_object_hide(d.clipper);
+ fprintf(stdout, "hidden\n");
+ }
+ else
+ {
+ evas_object_show(d.clipper);
+ fprintf(stdout, "visible\n");
+ }
+ return;
+ }
+}
+
+int
+main(void)
+{
+ int err;
+
+ if (!ecore_evas_init())
+ return EXIT_FAILURE;
+
+ /* this will give you a window with an Evas canvas under the first
+ * engine available */
+ d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
+ if (!d.ee)
+ goto error;
+
+ ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
+ ecore_evas_show(d.ee);
+
+ /* the canvas pointer, de facto */
+ d.canvas = ecore_evas_get(d.ee);
+
+ d.bg = evas_object_rectangle_add(d.canvas);
+ evas_object_name_set(d.bg, "background rectangle");
+ evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */
+ evas_object_move(d.bg, 0, 0); /* at canvas' origin */
+ evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */
+ evas_object_show(d.bg);
+
+ evas_object_focus_set(d.bg, EINA_TRUE);
+ evas_object_event_callback_add(
+ d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
+
+ d.img = evas_object_image_filled_add(d.canvas);
+ evas_object_image_file_set(d.img, img_path, NULL);
+ err = evas_object_image_load_error_get(d.img);
+ if (err != EVAS_LOAD_ERROR_NONE)
+ {
+ goto panic;
+ }
+ else
+ {
+ evas_object_move(d.img, 0, 0);
+ evas_object_resize(d.img, WIDTH, HEIGHT);
+ evas_object_show(d.img);
+
+ fprintf(stdout, "Image object added, type is: %s\n",
+ evas_object_type_get(d.img));
+ }
+
+ /* border on the image's clipper, here just to emphasize its position */
+ d.clipper_border = evas_object_image_filled_add(d.canvas);
+ evas_object_image_file_set(d.clipper_border, border_img_path, NULL);
+ err = evas_object_image_load_error_get(d.clipper_border);
+ if (err != EVAS_LOAD_ERROR_NONE)
+ {
+ goto panic;
+ }
+ else
+ {
+ evas_object_image_border_set(d.clipper_border, 3, 3, 3, 3);
+ evas_object_image_border_center_fill_set(
+ d.clipper_border, EVAS_BORDER_FILL_NONE);
+ evas_object_move(d.clipper_border, (WIDTH / 4) - 3, (HEIGHT / 4) - 3);
+ evas_object_resize(
+ d.clipper_border, (WIDTH / 2) + 6, (HEIGHT / 2) + 6);
+ evas_object_show(d.clipper_border);
+ }
+
+ /* solid white clipper (note that it's the default color for a
+ * rectangle) - it won't change clippees' colors, then (multiplying
+ * by 255) */
+ d.clipper = evas_object_rectangle_add(d.canvas);
+ evas_object_move(d.clipper, WIDTH / 4, HEIGHT / 4);
+ evas_object_resize(d.clipper, WIDTH / 2, HEIGHT / 2);
+ evas_object_clip_set(d.img, d.clipper);
+ evas_object_show(d.clipper);
+
+ ecore_main_loop_begin();
+
+ ecore_evas_free(d.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");
+panic:
+ ecore_evas_shutdown();
+ return -1;
+}
* calling evas_object_clip_unset() on the @p obj object.
*
* Example:
- * @code
- * extern Evas *evas;
- * extern Evas_Object *obj;
- * Evas_Object *clipper;
+ * @dontinclude evas-object-manipulation.c
+ * @skip solid white clipper (note that it's the default color for a
+ * @until evas_object_show(d.clipper);
*
- * clipper = evas_object_rectangle_add(evas);
- * evas_object_color_set(clipper, 255, 255, 255, 255);
- * evas_object_move(clipper, 10, 10);
- * evas_object_resize(clipper, 20, 50);
- * evas_object_clip_set(obj, clipper);
- * evas_object_show(clipper);
- * @endcode
+ * See the full @ref Example_Evas_Object_Manipulation "example".
*/
EAPI void evas_object_clip_set (Evas_Object *obj, Evas_Object *clip) EINA_ARG_NONNULL(1, 2);
* evas_object_clipees_get().
*
* Example:
- * @code
- * extern Evas_Object *obj;
- * Evas_Object *clipper;
- *
- * clipper = evas_object_clip_get(obj);
- * if (clipper) evas_object_show(clipper);
- * @endcode
+ * @dontinclude evas-object-manipulation.c
+ * @skip if (evas_object_clip_get(d.img) == d.clipper)
+ * @until return
*
+ * See the full @ref Example_Evas_Object_Manipulation "example".
*/
EAPI Evas_Object *evas_object_clip_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
* the previous clipper. If it wasn't, this has no effect. The object
* @p obj must be a valid ::Evas_Object.
*
- * See also evas_object_clip_set(), evas_object_clipees_get() and
- * evas_object_clip_get().
- *
- * Example:
- * @code
- * extern Evas_Object *obj;
- * Evas_Object *clipper;
- *
- * clipper = evas_object_clip_get(obj);
- * if (clipper)
- * {
- * evas_object_clip_unset(obj);
- * evas_object_hide(obj);
- * }
- * @endcode
+ * See also evas_object_clip_set() (for an example),
+ * evas_object_clipees_get() and evas_object_clip_get().
*
*/
EAPI void evas_object_clip_unset (Evas_Object *obj);
* There might be ocasions where one would like to name his/her
* objects.
*
+ * Example:
+ * @dontinclude evas-events.c
+ * @skip d.bg = evas_object_rectangle_add(d.canvas);
+ * @until evas_object_name_set(d.bg, "our dear rectangle");
+ *
+ * See the full @ref Example_Evas_Events "example".
*/
EAPI void evas_object_name_set (Evas_Object *obj, const char *name) EINA_ARG_NONNULL(1);
* @param obj The given object.
* @return The name of the object or @c NULL, if no name has been given
* to it.
+ *
+ * Example:
+ * @dontinclude evas-events.c
+ * @skip fprintf(stdout, "An object got focused: %s\n",
+ * @until evas_focus_get
+ *
+ * See the full @ref Example_Evas_Events "example".
*/
EAPI const char *evas_object_name_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
* @note Naturally, newly created objects are placed at the canvas'
* origin: <code>0, 0</code>.
*
+ * Example:
+ * @dontinclude evas-object-manipulation.c
+ * @skip evas_object_image_border_set(d.clipper_border, 3, 3, 3, 3);
+ * @until evas_object_show
+ *
+ * See the full @ref Example_Evas_Object_Manipulation "example".
+ *
* @ingroup Evas_Object_Group_Basic
*/
EAPI void evas_object_move (Evas_Object *obj, Evas_Coord x, Evas_Coord y) EINA_ARG_NONNULL(1);
* @note Use @c NULL pointers on the geometry components you're not
* interested in: they'll be ignored by the function.
*
+ * Example:
+ * @dontinclude evas-events.c
+ * @skip int w, h, cw, ch;
+ * @until return
+ *
+ * See the full @ref Example_Evas_Events "example".
+ *
* @ingroup Evas_Object_Group_Basic
*/
EAPI void evas_object_geometry_get (const Evas_Object *obj, Evas_Coord *x, Evas_Coord *y, Evas_Coord *w, Evas_Coord *h) EINA_ARG_NONNULL(1);
* @see evas_object_show()
* @see evas_object_visible_get()
*
+ * Example:
+ * @dontinclude evas-object-manipulation.c
+ * @skip if (evas_object_visible_get(d.clipper))
+ * @until return
+ *
+ * See the full @ref Example_Evas_Object_Manipulation "example".
+ *
* @ingroup Evas_Object_Group_Basic
*/
EAPI void evas_object_hide (Evas_Object *obj) EINA_ARG_NONNULL(1);
* stacked below other object.
*
* @see evas_object_show()
- * @see evas_object_hide()
+ * @see evas_object_hide() (for an example)
*
* @ingroup Evas_Object_Group_Basic
*/
* @param b The blue component of the given color.
* @param a The alpha component of the given color.
*
- * @see evas_object_color_get()
+ * @see evas_object_color_get() (for an example)
*
* @ingroup Evas_Object_Group_Basic
*/
* @note Use @c NULL pointers on the components you're not interested
* in: they'll be ignored by the function.
*
+ * Example:
+ * @dontinclude evas-object-manipulation.c
+ * @skip int alpha, r, g, b;
+ * @until return
+ *
+ * See the full @ref Example_Evas_Object_Manipulation "example".
+ *
* @ingroup Evas_Object_Group_Basic
*/
EAPI void evas_object_color_get (const Evas_Object *obj, int *r, int *g, int *b, int *a) EINA_ARG_NONNULL(1);
* For Evas smart objects (see @ref Evas_Smart_Group), the name of the
* smart class itself is returned on this call. For the built-in
* clipped smart object, it is <c>"EvasObjectSmartClipped"</c>.
+ *
+ * Example:
+ * @dontinclude evas-object-manipulation.c
+ * @skip d.img = evas_object_image_filled_add(d.canvas);
+ * @until border on the
+ *
+ * See the full @ref Example_Evas_Object_Manipulation "example".
*/
EAPI const char *evas_object_type_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
projects / framework / uifw / evas.git / commitdiff
