1 files changed, 157 insertions, 0 deletions

diff --git a/libraries/edje/src/examples/edje-drag.c b/libraries/edje/src/examples/edje-drag.c
new file mode 100644
index 0000000..78e2e72
--- /dev/null
+++ b/libraries/edje/src/examples/edje-drag.c
@@ -0,0 +1,157 @@
+/**
+ * Simple Edje example illustrating drag functions.
+ *
+ * You'll need at least one Evas engine built for it (excluding the
+ * buffer one). See stdout/stderr for output.
+ *
+ * @verbatim
+ * edje_cc drag.edc && gcc -o drag-box drag-box.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
+ * @endverbatim
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#else
+#define PACKAGE_EXAMPLES_DIR "."
+#define __UNUSED__
+#endif
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <Edje.h>
+
+#define WIDTH  300
+#define HEIGHT 300
+
+#define RECTW 30
+#define RECTH 30
+
+#define NRECTS 20
+
+static const char *PARTNAME = "example/knob";
+
+static const char *edje_file_path = PACKAGE_EXAMPLES_DIR "/drag.edj";
+
+struct _App {
+    Ecore_Evas *ee;
+    Evas_Object *edje;
+    Evas_Object *bg;
+};
+
+static void
+_on_destroy(Ecore_Evas *ee __UNUSED__)
+{
+   ecore_main_loop_quit();
+}
+
+/* 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;
+   struct _App *app = ecore_evas_data_get(ee, "app");
+
+   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
+   evas_object_resize(app->bg, w, h);
+   evas_object_resize(app->edje, w, h);
+}
+
+static void
+_bg_key_down(void *data, Evas *e, Evas_Object *o __UNUSED__, void *event_info)
+{
+   struct _App *app = data;
+   Evas_Event_Key_Down *ev = event_info;
+   Evas_Object *rect;
+   Eina_Bool r;
+
+
+   if (!strcmp(ev->keyname, "Down"))
+     {
+        edje_object_part_drag_step(app->edje, PARTNAME, 0, 1.0);
+     }
+   else if (!strcmp(ev->keyname, "Up"))
+     {
+        edje_object_part_drag_step(app->edje, PARTNAME, 0, -1.0);
+     }
+   else if (!strcmp(ev->keyname, "m"))
+     {
+        edje_object_part_drag_value_set(app->edje, PARTNAME, 0.0, 0.5);
+     }
+   else if (!strcmp(ev->keyname, "Prior"))
+     {
+        edje_object_part_drag_page(app->edje, PARTNAME, 0.0, -1.0);
+     }
+   else if (!strcmp(ev->keyname, "Next"))
+     {
+        edje_object_part_drag_page(app->edje, PARTNAME, 0.0, 1.0);
+     }
+   else if (!strcmp(ev->keyname, "Escape"))
+     ecore_main_loop_quit();
+   else
+     printf("unhandled key: %s\n", ev->keyname);
+}
+
+static void
+_knob_moved_cb(void *data, Evas_Object *o, const char *emission, const char *source)
+{
+   double val;
+   edje_object_part_drag_value_get(o, PARTNAME, NULL, &val);
+   printf("value changed to: %0.3f\n", val);
+}
+
+int
+main(void)
+{
+   Evas *evas;
+   struct _App app;
+   int i;
+
+   ecore_evas_init();
+   edje_init();
+
+   /* this will give you a window with an Evas canvas under the first
+    * engine available */
+   app.ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
+
+   ecore_evas_callback_destroy_set(app.ee, _on_destroy);
+   ecore_evas_callback_resize_set(app.ee, _canvas_resize_cb);
+   ecore_evas_title_set(app.ee, "Edje Box Example");
+   ecore_evas_show(app.ee);
+
+   ecore_evas_data_set(app.ee, "app", &app);
+
+   evas = ecore_evas_get(app.ee);
+
+   app.bg = evas_object_rectangle_add(evas);
+   evas_object_color_set(app.bg, 255, 255, 255, 255);
+   evas_object_resize(app.bg, WIDTH, HEIGHT);
+   evas_object_focus_set(app.bg, EINA_TRUE);
+   evas_object_show(app.bg);
+
+   evas_object_event_callback_add(app.bg, EVAS_CALLBACK_KEY_DOWN, _bg_key_down, &app);
+
+   app.edje = edje_object_add(evas);
+
+   edje_object_file_set(app.edje, edje_file_path, "example/group");
+   evas_object_move(app.edje, 0, 0);
+   evas_object_resize(app.edje, WIDTH, HEIGHT);
+   evas_object_show(app.edje);
+
+   edje_object_part_drag_size_set(app.edje, PARTNAME, 1.0, 0.4);
+
+   if (!edje_object_part_drag_step_set(app.edje, PARTNAME, 0.0, 0.1))
+     printf("error when setting drag step size.\n");
+
+   if (!edje_object_part_drag_page_set(app.edje, PARTNAME, 0.0, 0.3))
+     printf("error when setting drag page step size.\n");
+
+   edje_object_signal_callback_add(app.edje, "drag", PARTNAME, _knob_moved_cb, &app);
+
+   ecore_main_loop_begin();
+
+   ecore_evas_free(app.ee);
+   ecore_evas_shutdown();
+   edje_shutdown();
+   return 0;
+}