254 lines
5.9 KiB
C
254 lines
5.9 KiB
C
/**
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* Simple Edje example illustrating drag functions.
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*
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* You'll need at least one Evas engine built for it (excluding the
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* buffer one). See stdout/stderr for output.
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*
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* @verbatim
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* edje_cc drag.edc && gcc -o drag-box drag-box.c `pkg-config --libs --cflags evas ecore ecore-evas edje`
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* @endverbatim
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#else
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# define __UNUSED__
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#endif
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#include <Ecore.h>
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#include <Ecore_Evas.h>
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#include <Edje.h>
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#define WIDTH 480
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#define HEIGHT 320
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static const char commands[] = \
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"commands are:\n"
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"\tDown - move part down\n"
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"\tUp - move part up\n"
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"\tLeft - move part left\n"
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"\tRight - move part right\n"
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"\tPrior - move part up-left\n"
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"\tNext - move part down-right\n"
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"\tInsert - increase focal\n"
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"\tSuppr - decrease focal\n"
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"\tEsc - exit\n"
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"\th - print help\n";
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struct _App {
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Evas_Object *edje_obj;
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Evas_Object *bg;
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Edje_Perspective *ps;
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Eina_Bool animating;
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int x, y; // relative position of part in the screen
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int focal;
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};
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static void
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_on_destroy(Ecore_Evas *ee __UNUSED__)
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{
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ecore_main_loop_quit();
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}
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/* here just to keep our example's window size and background image's
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* size in synchrony */
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static void
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_on_canvas_resize(Ecore_Evas *ee)
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{
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int w, h;
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struct _App *app = ecore_evas_data_get(ee, "app");
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ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
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evas_object_resize(app->bg, w, h);
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evas_object_resize(app->edje_obj, w, h);
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}
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static void
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_part_move(struct _App *app, int dx, int dy)
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{
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char emission[64];
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if (app->animating)
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return;
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app->x += dx;
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app->y += dy;
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if (app->x > 1)
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app->x = 1;
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if (app->x < 0)
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app->x = 0;
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if (app->y > 1)
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app->y = 1;
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if (app->y < 0)
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app->y = 0;
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snprintf(emission, sizeof(emission), "move,%d,%d", app->x, app->y);
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edje_object_signal_emit(app->edje_obj, emission, "");
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app->animating = EINA_TRUE;
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}
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static void
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_on_bg_key_down(void *data, Evas *e __UNUSED__, Evas_Object *o __UNUSED__, void *event_info)
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{
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struct _App *app = data;
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Evas_Event_Key_Down *ev = event_info;
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if (!strcmp(ev->keyname, "h"))
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{
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fprintf(stdout, commands);
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return;
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}
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// just moving the part and text
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else if (!strcmp(ev->keyname, "Down"))
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{
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_part_move(app, 0, 1);
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}
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else if (!strcmp(ev->keyname, "Up"))
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{
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_part_move(app, 0, -1);
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}
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else if (!strcmp(ev->keyname, "Left"))
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{
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_part_move(app, -1, 0);
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}
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else if (!strcmp(ev->keyname, "Right"))
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{
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_part_move(app, 1, 0);
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}
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else if (!strcmp(ev->keyname, "Prior"))
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{
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_part_move(app, -1, -1);
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}
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else if (!strcmp(ev->keyname, "Next"))
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{
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_part_move(app, 1, 1);
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}
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// adjusting the perspective focal point distance
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else if (!strcmp(ev->keyname, "KP_Add"))
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{
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app->focal += 5;
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edje_perspective_set(app->ps, 240, 160, 0, app->focal);
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edje_object_calc_force(app->edje_obj);
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}
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else if (!strcmp(ev->keyname, "KP_Subtract"))
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{
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app->focal -= 5;
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if (app->focal < 5)
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app->focal = 5;
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edje_perspective_set(app->ps, 240, 160, 0, app->focal);
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edje_object_calc_force(app->edje_obj);
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}
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// exiting
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else if (!strcmp(ev->keyname, "Escape"))
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ecore_main_loop_quit();
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else
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{
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printf("unhandled key: %s\n", ev->keyname);
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fprintf(stdout, commands);
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}
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}
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static void
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_animation_end_cb(void *data, Evas_Object *o __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
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{
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struct _App *app = data;
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app->animating = EINA_FALSE;
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}
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int
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main(int argc __UNUSED__, char *argv[])
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{
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char edje_file_path[PATH_MAX];
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const char *edje_file = "perspective.edj";
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struct _App app;
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Ecore_Evas *ee;
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Evas *evas;
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Eina_Prefix *pfx;
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if (!ecore_evas_init())
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return EXIT_FAILURE;
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if (!edje_init())
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goto shutdown_ecore_evas;
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pfx = eina_prefix_new(argv[0], main,
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"EDJE_EXAMPLES",
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"edje/examples",
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edje_file,
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PACKAGE_BIN_DIR,
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PACKAGE_LIB_DIR,
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PACKAGE_DATA_DIR,
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PACKAGE_DATA_DIR);
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if (!pfx)
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goto shutdown_edje;
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edje_frametime_set(1.0 / 60.0);
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/* this will give you a window with an Evas canvas under the first
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* engine available */
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app.animating = EINA_FALSE;
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app.x = 0;
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app.y = 0;
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app.focal = 50;
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ee = ecore_evas_new(NULL, 0, 0, WIDTH, HEIGHT, NULL);
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if (!ee)
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goto free_prefix;
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ecore_evas_callback_destroy_set(ee, _on_destroy);
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ecore_evas_callback_resize_set(ee, _on_canvas_resize);
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ecore_evas_title_set(ee, "Edje Box Example");
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ecore_evas_data_set(ee, "app", &app);
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evas = ecore_evas_get(ee);
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app.bg = evas_object_rectangle_add(evas);
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evas_object_color_set(app.bg, 255, 255, 255, 255);
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evas_object_resize(app.bg, WIDTH, HEIGHT);
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evas_object_focus_set(app.bg, EINA_TRUE);
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evas_object_show(app.bg);
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evas_object_event_callback_add(app.bg, EVAS_CALLBACK_KEY_DOWN, _on_bg_key_down, &app);
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app.edje_obj = edje_object_add(evas);
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snprintf(edje_file_path, sizeof(edje_file_path),
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"%s/examples/%s", eina_prefix_data_get(pfx), edje_file);
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edje_object_file_set(app.edje_obj, edje_file_path, "example/group");
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evas_object_move(app.edje_obj, 0, 0);
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evas_object_resize(app.edje_obj, WIDTH, HEIGHT);
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evas_object_show(app.edje_obj);
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edje_object_signal_callback_add(app.edje_obj, "animation,end", "", _animation_end_cb, &app);
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app.ps = edje_perspective_new(evas);
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edje_perspective_set(app.ps, 240, 160, 0, app.focal);
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edje_perspective_global_set(app.ps, EINA_TRUE);
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fprintf(stdout, commands);
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ecore_evas_show(ee);
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ecore_main_loop_begin();
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eina_prefix_free(pfx);
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ecore_evas_free(ee);
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ecore_evas_shutdown();
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edje_shutdown();
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return EXIT_SUCCESS;
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free_prefix:
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eina_prefix_free(pfx);
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shutdown_edje:
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edje_shutdown();
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shutdown_ecore_evas:
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ecore_evas_shutdown();
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return EXIT_FAILURE;
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}
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