Ecore Evas: Add a new cursor example.devs/iscaro/ecore_evas_cursor

This example sets the cursor image of each available mouse and
report its position every one second.

3 files changed, 175 insertions, 4 deletions

diff --git a/src/examples/ecore/.gitignore b/src/examples/ecore/.gitignore
index eeaf839ff3..5d577a6556 100644
--- a/src/examples/ecore/.gitignore
+++ b/src/examples/ecore/.gitignore
@@ -20,6 +20,7 @@
 /ecore_evas_buffer_example_01
 /ecore_evas_buffer_example_02
 /ecore_evas_callbacks
+/ecore_evas_cursor_example
 /ecore_evas_ews_example
 /ecore_evas_extn_plug_example
 /ecore_evas_extn_socket_example
diff --git a/src/examples/ecore/Makefile.am b/src/examples/ecore/Makefile.am
index f0f4557b14..c90e0c6f2b 100644
--- a/src/examples/ecore/Makefile.am
+++ b/src/examples/ecore/Makefile.am
@@ -57,9 +57,10 @@ ecore_con_url_ftp_example \
 ecore_evas_basics_example \
 ecore_evas_buffer_example_01 \
 ecore_evas_buffer_example_02 \
+ecore_evas_callbacks \
+ecore_evas_cursor_example \
 ecore_evas_extn_socket_example \
 ecore_evas_extn_plug_example \
-ecore_evas_callbacks \
 ecore_evas_ews_example \
 ecore_evas_object_example \
 ecore_evas_wayland_multiseat_example \
@@ -209,15 +210,18 @@ ecore_evas_buffer_example_01_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 ecore_evas_buffer_example_02_SOURCES = ecore_evas_buffer_example_02.c
 ecore_evas_buffer_example_02_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 
+ecore_evas_callbacks_SOURCES = ecore_evas_callbacks.c
+ecore_evas_callbacks_LDADD = $(ECORE_EVAS_COMMON_LDADD)
+
+ecore_evas_cursor_example_SOURCES = ecore_evas_cursor_example.c
+ecore_evas_cursor_example_LDADD = $(ECORE_EVAS_COMMON_LDADD)
+
 ecore_evas_extn_socket_example_SOURCES = ecore_evas_extn_socket_example.c
 ecore_evas_extn_socket_example_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 
 ecore_evas_extn_plug_example_SOURCES = ecore_evas_extn_plug_example.c
 ecore_evas_extn_plug_example_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 
-ecore_evas_callbacks_SOURCES = ecore_evas_callbacks.c
-ecore_evas_callbacks_LDADD = $(ECORE_EVAS_COMMON_LDADD)
-
 ecore_evas_ews_example_SOURCES = ecore_evas_ews_example.c
 ecore_evas_ews_example_LDADD = $(ECORE_EVAS_COMMON_LDADD)
 
diff --git a/src/examples/ecore/ecore_evas_cursor_example.c b/src/examples/ecore/ecore_evas_cursor_example.c
new file mode 100644
index 0000000000..e5e83c5cc7
--- /dev/null
+++ b/src/examples/ecore/ecore_evas_cursor_example.c
@@ -0,0 +1,166 @@
+/**
+ * Ecore Evas example illustrating how to set a new cursor image for a pointer device.
+ *
+ * @verbatim
+ * gcc -o ecore_evas_cursor_example ecore_evas_cursor_example.c `pkg-config --libs --cflags evas ecore ecore-evas`
+ * @endverbatim
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <Evas.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#define W (200)
+#define H (200)
+#define TIMEOUT (1.0)
+
+static void
+_delete_request_cb(Ecore_Evas *ee EINA_UNUSED)
+{
+   ecore_main_loop_quit();
+}
+
+static void
+_resize_cb(Ecore_Evas *ee)
+{
+   int w, h;
+
+   ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
+   evas_object_resize(ecore_evas_data_get(ee, "bg"), w, h);
+}
+
+static Eina_Bool
+_mouse_pos_print(void *data)
+{
+   Efl_Input_Device *pointer;
+   const Eina_List *devs, *l;
+
+   devs = evas_device_list(ecore_evas_get(data), NULL);
+
+   EINA_LIST_FOREACH(devs, l, pointer)
+     {
+        Evas_Coord x, y;
+        Efl_Input_Device *seat;
+
+        if (efl_input_device_type_get(pointer) != EFL_INPUT_DEVICE_CLASS_MOUSE)
+          continue;
+        ecore_evas_pointer_device_xy_get(data, pointer, &x, &y);
+        seat = efl_input_device_seat_get(pointer);
+        if (!seat)
+          {
+             fprintf(stderr, "Could not fetch the seat from mouse '%s'\n",
+                     efl_input_device_name_get(pointer));
+             continue;
+          }
+        printf("Mouse from seat '%s' is at (%d, %d)\n",
+               efl_input_device_name_get(seat), x, y);
+     }
+   return EINA_TRUE;
+}
+
+static void
+_cursor_set(Ecore_Evas *ee, Efl_Input_Device *pointer)
+{
+   Evas_Object *obj;
+
+   obj = evas_object_rectangle_add(ecore_evas_get(ee));
+   evas_object_color_set(obj, rand() % 256, rand() % 256, rand() % 256, 255);
+   evas_object_resize(obj, 30, 30);
+   evas_object_show(obj);
+   ecore_evas_object_cursor_device_set(ee, pointer, obj, 0, 10, 10);
+}
+
+static void
+_device_added(void *data, const Efl_Event *event)
+{
+   Efl_Input_Device *pointer = event->info;
+   Efl_Input_Device *seat;
+
+   if (efl_input_device_type_get(pointer) != EFL_INPUT_DEVICE_CLASS_MOUSE)
+     return;
+   seat = efl_input_device_seat_get(pointer);
+   if (!seat)
+     {
+        fprintf(stderr, "Could not fetch the seat from pointer '%s'\n",
+                efl_input_device_name_get(pointer));
+        return;
+     }
+   printf("Setting cursor image at seat '%s'\n", efl_input_device_name_get(seat));
+   _cursor_set(data, pointer);
+}
+
+int
+main(int argc EINA_UNUSED, char *argv[] EINA_UNUSED)
+{
+   const Eina_List *devs, *l;
+   Efl_Input_Device *pointer;
+   Ecore_Evas *ee;
+   Evas_Object *bg;
+   Evas *e;
+   Ecore_Timer *t;
+   const char *driver;
+
+   srand(time(NULL));
+   if (!ecore_evas_init())
+     {
+        fprintf(stderr, "Could not init the Ecore Evas\n");
+        return EXIT_FAILURE;
+     }
+
+   ee = ecore_evas_new(NULL, 0, 0, W, H, NULL);
+   if (!ee)
+     {
+        fprintf(stderr, "Could not create the Ecore Evas\n");
+        goto err_ee;
+     }
+
+   driver = ecore_evas_engine_name_get(ee);
+   printf("Using driver %s\n", driver);
+   if ((!strcmp(driver, "fb")  || !strcmp(driver, "software_x11")) &&
+       !ecore_evas_vnc_start(ee, "localhost", -1, NULL, NULL, NULL))
+     {
+        fprintf(stderr, "Could not init the VNC server\n");
+        goto err_ee;
+     }
+
+   e = ecore_evas_get(ee);
+   bg = evas_object_rectangle_add(e);
+   evas_object_resize(bg, W, H);
+   evas_object_move(bg, 0, 0);
+   evas_object_color_set(bg, 255, 255, 255, 255);
+   evas_object_show(bg);
+   ecore_evas_data_set(ee, "bg", bg);
+
+   devs = evas_device_list(e, NULL);
+
+   EINA_LIST_FOREACH(devs, l, pointer)
+     {
+        if (efl_input_device_type_get(pointer) != EFL_INPUT_DEVICE_CLASS_MOUSE)
+          continue;
+        _cursor_set(ee, pointer);
+     }
+
+   t = ecore_timer_add(TIMEOUT, _mouse_pos_print, ee);
+   efl_event_callback_add(e, EFL_CANVAS_EVENT_DEVICE_ADDED,
+                          _device_added, ee);
+   ecore_evas_callback_resize_set(ee, _resize_cb);
+   ecore_evas_callback_delete_request_set(ee, _delete_request_cb);
+
+   ecore_evas_show(ee);
+   ecore_main_loop_begin();
+   ecore_evas_free(ee);
+   ecore_timer_del(t);
+   ecore_evas_shutdown();
+   return EXIT_SUCCESS;
+
+ err_ee:
+   ecore_evas_shutdown();
+   return EXIT_FAILURE;
+}