Tizen Native API
5.5
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evas-object-manipulation.c
#ifdef HAVE_CONFIG_H #include "config.h" #else #define PACKAGE_EXAMPLES_DIR "." #endif #include <Ecore.h> #include <Ecore_Evas.h> #include <stdio.h> #include <errno.h> #include "evas-common.h" #define WIDTH (320) #define HEIGHT (240) static const char *img_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/enlightenment.png"; static const char *border_img_path = PACKAGE_EXAMPLES_DIR EVAS_IMAGE_FOLDER "/red.png"; struct test_data { Ecore_Evas *ee; Evas *canvas; Evas_Object *img, *bg, *clipper, *clipper_border, *text; }; static struct test_data d = {0}; /* Keep the example's window size in sync with the background image's size */ 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); } /* Keyboard event callback routine, to enable the user to toggle various * object properties on the clipper object. */ static void _on_keydown(void *data EINA_UNUSED, Evas *evas EINA_UNUSED, Evas_Object *o EINA_UNUSED, void *einfo) { Evas_Event_Key_Down *ev = einfo; if (strcmp(ev->key, "h") == 0) { /* h - print help */ printf("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->key, "o") == 0) { /* o - Change clipper's opacity */ int alpha, r, g, b; evas_object_color_get(d.clipper, &r, &g, &b, &alpha); evas_color_argb_unpremul(alpha, &r, &g, &b); alpha -= 20; if (alpha < 0) alpha = 255; evas_color_argb_premul(alpha, &r, &g, &b); evas_object_color_set(d.clipper, r, g, b, alpha); printf("Changing clipper's opacity: %d%%\n", (int)((alpha / 255.0) * 100)); return; } if (strcmp(ev->key, "r") == 0) { /* r - Toggle clipper's color between red and white */ int alpha, r, g, b; printf("Changing clipper's color to"); evas_object_color_get(d.clipper, &r, &g, &b, &alpha); evas_color_argb_unpremul(alpha, &r, &g, &b); if (g > 0) { printf("red\n"); g = b = 0; } else { printf("white\n"); g = b = 255; } evas_color_argb_premul(alpha, &r, &g, &b); evas_object_color_set(d.clipper, r, g, b, alpha); return; } if (strcmp(ev->key, "c") == 0) { /* o - Toggle clipper's clipping function */ printf("Toggling clipping "); if (evas_object_clip_get(d.img) == d.clipper) { evas_object_clip_unset(d.img); printf("off\n"); } else { evas_object_clip_set(d.img, d.clipper); printf("on\n"); } return; } if (strcmp(ev->key, "v") == 0) { /* v - Toggle clipper's visibility */ printf("Clipper is now "); if (evas_object_visible_get(d.clipper)) { evas_object_hide(d.clipper); printf("hidden\n"); } else { evas_object_show(d.clipper); printf("visible\n"); } return; } } int main(void) { int err; if (!ecore_evas_init()) return EXIT_FAILURE; 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); d.canvas = ecore_evas_get(d.ee); /* Create background. As mentioned earlier, the evas_object_* * routines are part of the legacy Evas API; with the new API * you should use code as shown in evas-object-manipulation-eo.c. */ 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); /* Load enlightenment.png as an image object, then make it fill the * whole canvas area. */ 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); printf("Image object added, type is: %s\n", evas_object_type_get(d.img)); } /* Add a second image to the canvas - a red square this time. It * will be given a border 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); } /* Lastly, add a rectangle. It will be white (the default color for * rectangles) and so won't change the color of anything it clips. */ 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, "error: Requires at least one Evas engine built and linked" " to ecore-evas for this example to run properly.\n"); panic: ecore_evas_free(d.ee); ecore_evas_shutdown(); return -1; }