1 files changed, 249 insertions, 0 deletions

diff --git a/libraries/evas/src/examples/evas-aspect-hints.c b/libraries/evas/src/examples/evas-aspect-hints.c
new file mode 100644
index 0000000..de8ed50
--- /dev/null
+++ b/libraries/evas/src/examples/evas-aspect-hints.c
@@ -0,0 +1,249 @@
+/**
+ * Simple Evas example illustrating aspect control hints on objects.
+ *
+ * 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.
+ *
+ * You'll also need @b Edje for this one, as it has the only smart
+ * object implementing aspect control for children.
+ *
+ * @verbatim
+ * gcc -o evas-events evas-events.c `pkg-config --libs --cflags ecore-evas edje`
+ * @endverbatim
+ */
+
+#ifdef HAVE_CONFIG_H
+
+#include "config.h"
+#endif
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <Edje.h>
+#include <stdio.h>
+#include <errno.h>
+
+#define WIDTH         320
+#define HEIGHT        480
+
+static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png";
+static const char *edje_file_path = PACKAGE_EXAMPLES_DIR "/aspect.edj";
+
+struct test_data
+{
+   Ecore_Evas  *ee;
+   Evas        *canvas;
+   Evas_Object *bg, *rect, *container, *border;
+};
+
+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 const char *
+_get_aspect_name(Evas_Aspect_Control aspect)
+{
+   switch (aspect)
+     {
+      case 0:
+        return "NONE";
+
+      case 1:
+        return "NEITHER";
+
+      case 2:
+        return "HORIZONTAL";
+
+      case 3:
+        return "VERTICAL";
+
+      case 4:
+        return "BOTH";
+
+      default:
+        return "INVALID";
+     }
+}
+
+static void
+_on_keydown(void        *data __UNUSED__,
+            Evas        *evas __UNUSED__,
+            Evas_Object *o,
+            void        *einfo)
+{
+   const Evas_Modifier *mods;
+   Evas_Event_Key_Down *ev = einfo;
+
+   mods = evas_key_modifier_get(evas_object_evas_get(o));
+
+   if (evas_key_modifier_is_set(mods, "Shift") &&
+       strcmp(ev->keyname, "h") == 0) /* print help */
+     {
+        fprintf(stdout, "commands are:\n"
+                        "\tc - cycle aspect control on object\n"
+                        "\th - change horizontal aspect component\n"
+                        "\tv - change vertical aspect component\n"
+                        "\ts - print current object's status\n"
+                        "\tH - print help\n");
+        return;
+     }
+
+   if (strcmp(ev->keyname, "s") == 0) /* get aspect status of the obj */
+     {
+        Evas_Coord w, h;
+        Evas_Aspect_Control aspect;
+
+        evas_object_size_hint_aspect_get(d.rect, &aspect, &w, &h);
+
+        fprintf(stdout, "Object has aspect %s, with horizontal compontent %d"
+                        " and vertical compontent %d\n",
+                _get_aspect_name(aspect), w, h);
+
+        return;
+     }
+
+   if (strcmp(ev->keyname, "c") == 0) /* cycle aspect control on obj */
+     {
+        Evas_Coord w, h;
+        Evas_Aspect_Control aspect;
+
+        evas_object_size_hint_aspect_get(d.rect, &aspect, &w, &h);
+
+        aspect = (aspect + 1) % 5;
+
+        evas_object_size_hint_aspect_set(d.rect, aspect, w, h);
+
+        fprintf(stdout, "Changing aspect control to %s\n",
+                _get_aspect_name(aspect));
+
+        return;
+     }
+
+   if (strcmp(ev->keyname, "h") == 0) /* change horizontal aspect component */
+     {
+        Evas_Coord w, h;
+        Evas_Aspect_Control aspect;
+
+        evas_object_size_hint_aspect_get(d.rect, &aspect, &w, &h);
+
+        w = (w + 1) % 3;
+
+        evas_object_size_hint_aspect_set(d.rect, aspect, w, h);
+
+        fprintf(stdout, "Changing horizontal aspect component to %d\n", w);
+
+        return;
+     }
+
+   if (strcmp(ev->keyname, "v") == 0) /* change vertical aspect component */
+     {
+        Evas_Coord w, h;
+        Evas_Aspect_Control aspect;
+
+        evas_object_size_hint_aspect_get(d.rect, &aspect, &w, &h);
+
+        h = (h + 1) % 3;
+
+        evas_object_size_hint_aspect_set(d.rect, aspect, w, h);
+
+        fprintf(stdout, "Changing vertical aspect component to %d\n", h);
+
+        return;
+     }
+}
+
+int
+main(void)
+{
+   Eina_Bool ret;
+
+   if (!ecore_evas_init())
+     return EXIT_FAILURE;
+
+   if (!edje_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_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.container = edje_object_add(d.canvas);
+   ret = edje_object_file_set(d.container, edje_file_path, "main");
+   if (!ret)
+     {
+        Edje_Load_Error err = edje_object_load_error_get(d.container);
+        const char *msg = edje_load_error_str(err);
+        fprintf(stderr, "could not load 'main' from %s: %s",
+                edje_file_path, msg);
+
+        goto panic;
+     }
+
+   evas_object_move(d.container, (WIDTH / 4), (HEIGHT / 4));
+   evas_object_resize(d.container, (WIDTH / 2), (HEIGHT / 2));
+   evas_object_show(d.container);
+
+   d.rect = evas_object_rectangle_add(d.canvas);
+   evas_object_color_set(d.rect, 0, 0, 255, 255);
+   evas_object_size_hint_aspect_set(d.rect, EVAS_ASPECT_CONTROL_NONE, 1, 1);
+   evas_object_show(d.rect);
+
+   edje_object_part_swallow(d.container, "content", d.rect);
+   evas_object_smart_changed(d.container);
+
+   /* this is a border around the edje object, container of the
+    * rectangle we are going to experiment with (change its aspect
+    * hints). this way you can see how their sizes relate */
+   d.border = evas_object_image_filled_add(d.canvas);
+   evas_object_image_file_set(d.border, border_img_path, NULL);
+   evas_object_image_border_set(d.border, 3, 3, 3, 3);
+   evas_object_image_border_center_fill_set(d.border, EVAS_BORDER_FILL_NONE);
+   evas_object_move(d.border, (WIDTH / 4) - 3, (HEIGHT / 4) - 3);
+   evas_object_resize(d.border, (WIDTH / 2) + 6, (HEIGHT / 2) + 6);
+   evas_object_show(d.border);
+
+   ecore_main_loop_begin();
+
+   ecore_evas_free(d.ee);
+   ecore_evas_shutdown();
+   edje_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_free(d.ee);
+   ecore_evas_shutdown();
+   edje_shutdown();
+
+   return -1;
+}