forked from enlightenment/efl
[evas] Example files for basic object manipulation
functions. SVN revision: 60317
This commit is contained in:
Gustavo Lima Chaves
parent
b61a6eea67
commit
4d8c554a08
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@ -10,6 +10,8 @@
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* @ref Example_Evas_Load_Error_Str
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*
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* @ref Example_Evas_Events
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*
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* @ref Example_Evas_Object_Manipulation
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*/
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/**
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@ -41,3 +43,10 @@
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* @include evas-events.c
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* @example evas-events.c
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*/
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/**
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* @page Example_Evas_Object_Manipulation Evas objects basic manipulation example
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*
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* @include evas-object-manipulation.c
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* @example evas-object-manipulation.c
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*/
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@ -46,10 +46,15 @@ pkglib_PROGRAMS += evas_events
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evas_events_SOURCES = evas-events.c
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evas_events_LDADD = $(top_builddir)/src/lib/libevas.la @ECORE_EVAS_LIBS@
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pkglib_PROGRAMS += evas_object_manipulation
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evas_object_manipulation_SOURCES = evas-object-manipulation.c
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evas_object_manipulation_LDADD = $(top_builddir)/src/lib/libevas.la @ECORE_EVAS_LIBS@
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endif # if BUILD_EXAMPLES
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filesdir = $(datadir)/$(PACKAGE)/examples
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files_DATA = $(srcdir)/enlightenment.png
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files_DATA = $(srcdir)/enlightenment.png \
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$(srcdir)/red.png
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if INSTALL_EXAMPLES
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files_DATA += \
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@ -0,0 +1,231 @@
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/**
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* Simple Evas example illustrating basic objects manipulation.
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*
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* You'll need at least one engine built for it (excluding the buffer
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* one) and the png image loader also built. See stdout/stderr for
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* output.
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*
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* @verbatim
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* gcc -o evas-events evas-events.c `pkg-config --libs --cflags ecore-evas`
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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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#endif
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#include <Ecore.h>
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#include <Ecore_Evas.h>
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#include <stdio.h>
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#include <errno.h>
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#define WIDTH (320)
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#define HEIGHT (240)
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static const char *img_path = PACKAGE_EXAMPLES_DIR "/enlightenment.png";
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static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png";
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struct test_data
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{
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Ecore_Evas *ee;
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Evas *canvas;
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Eina_Bool obscured;
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Ecore_Timer *resize_timer;
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Evas_Object *img, *bg, *clipper, *clipper_border, *text;
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};
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static struct test_data d = {0};
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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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_canvas_resize_cb(Ecore_Evas *ee)
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{
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int w, h;
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ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
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evas_object_resize(d.bg, w, h);
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}
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static void
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_on_keydown(void *data __UNUSED__,
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Evas *evas __UNUSED__,
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Evas_Object *o __UNUSED__,
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void *einfo)
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{
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Evas_Event_Key_Down *ev = einfo;
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if (strcmp(ev->keyname, "h") == 0) /* print help */
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{
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fprintf(stdout, "commands are:\n"
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"\to - change clipper's opacity\n"
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"\tr - toggle clipper's color between red and white\n"
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"\tc - toggle clipper's clipping function\n"
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"\tv - toggle clipper's visibility\n");
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return;
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}
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if (strcmp(ev->keyname, "o") == 0) /* change clipper's opacity */
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{
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int alpha, r, g, b;
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evas_object_color_get(d.clipper, &r, &g, &b, &alpha);
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alpha -= 20;
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if (alpha < 0)
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alpha = 255;
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evas_object_color_set(d.clipper, r, g, b, alpha);
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fprintf(stdout, "Changing clipper's opacity: %d%%\n",
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(int)((alpha / 255.0) * 100));
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return;
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}
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if (strcmp(ev->keyname, "r") == 0) /* toggle clipper's color
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* between red and white */
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{
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int alpha, r, g, b;
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fprintf(stdout, "Changing clipper's color to");
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evas_object_color_get(d.clipper, &r, &g, &b, &alpha);
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if (g > 0)
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{
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fprintf(stdout, "red\n");
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g = b = 0;
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}
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else
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{
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fprintf(stdout, "white\n");
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g = b = 255;
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}
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evas_object_color_set(d.clipper, r, g, b, alpha);
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return;
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}
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if (strcmp(ev->keyname, "c") == 0) /* toggle clipper's clipping function */
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{
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fprintf(stdout, "Toggling clipping ");
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if (evas_object_clip_get(d.img) == d.clipper)
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{
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evas_object_clip_unset(d.img);
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fprintf(stdout, "off\n");
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}
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else
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{
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evas_object_clip_set(d.img, d.clipper);
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fprintf(stdout, "on\n");
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}
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return;
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}
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if (strcmp(ev->keyname, "v") == 0) /* toggle clipper's visibility */
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{
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fprintf(stdout, "Clipper is now ");
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if (evas_object_visible_get(d.clipper))
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{
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evas_object_hide(d.clipper);
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fprintf(stdout, "hidden\n");
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}
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else
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{
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evas_object_show(d.clipper);
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fprintf(stdout, "visible\n");
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}
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return;
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}
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}
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int
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main(void)
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{
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int err;
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if (!ecore_evas_init())
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return EXIT_FAILURE;
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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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d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
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if (!d.ee)
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goto error;
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ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
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ecore_evas_show(d.ee);
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/* the canvas pointer, de facto */
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d.canvas = ecore_evas_get(d.ee);
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d.bg = evas_object_rectangle_add(d.canvas);
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evas_object_name_set(d.bg, "background rectangle");
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evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */
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evas_object_move(d.bg, 0, 0); /* at canvas' origin */
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evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */
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evas_object_show(d.bg);
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evas_object_focus_set(d.bg, EINA_TRUE);
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evas_object_event_callback_add(
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d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
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d.img = evas_object_image_filled_add(d.canvas);
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evas_object_image_file_set(d.img, img_path, NULL);
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err = evas_object_image_load_error_get(d.img);
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if (err != EVAS_LOAD_ERROR_NONE)
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{
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goto panic;
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}
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else
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{
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evas_object_move(d.img, 0, 0);
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evas_object_resize(d.img, WIDTH, HEIGHT);
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evas_object_show(d.img);
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fprintf(stdout, "Image object added, type is: %s\n",
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evas_object_type_get(d.img));
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}
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/* border on the image's clipper, here just to emphasize its position */
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d.clipper_border = evas_object_image_filled_add(d.canvas);
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evas_object_image_file_set(d.clipper_border, border_img_path, NULL);
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err = evas_object_image_load_error_get(d.clipper_border);
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if (err != EVAS_LOAD_ERROR_NONE)
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{
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goto panic;
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}
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else
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{
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evas_object_image_border_set(d.clipper_border, 3, 3, 3, 3);
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evas_object_image_border_center_fill_set(
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d.clipper_border, EVAS_BORDER_FILL_NONE);
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evas_object_move(d.clipper_border, (WIDTH / 4) - 3, (HEIGHT / 4) - 3);
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evas_object_resize(
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d.clipper_border, (WIDTH / 2) + 6, (HEIGHT / 2) + 6);
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evas_object_show(d.clipper_border);
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}
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/* solid white clipper (note that it's the default color for a
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* rectangle) - it won't change clippees' colors, then (multiplying
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* by 255) */
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d.clipper = evas_object_rectangle_add(d.canvas);
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evas_object_move(d.clipper, WIDTH / 4, HEIGHT / 4);
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evas_object_resize(d.clipper, WIDTH / 2, HEIGHT / 2);
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evas_object_clip_set(d.img, d.clipper);
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evas_object_show(d.clipper);
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ecore_main_loop_begin();
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ecore_evas_free(d.ee);
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ecore_evas_shutdown();
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return 0;
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error:
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fprintf(stderr, "you got to have at least one evas engine built and linked"
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" up to ecore-evas for this example to run properly.\n");
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panic:
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ecore_evas_shutdown();
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return -1;
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}
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Binary file not shown.
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After Width: | Height: | Size: 185 B |
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@ -2707,18 +2707,11 @@ EAPI const Eina_List *evas_font_path_list (const Evas *e) EINA_WA
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* calling evas_object_clip_unset() on the @p obj object.
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*
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* Example:
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* @code
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* extern Evas *evas;
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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* @dontinclude evas-object-manipulation.c
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* @skip solid white clipper (note that it's the default color for a
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* @until evas_object_show(d.clipper);
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*
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* clipper = evas_object_rectangle_add(evas);
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* evas_object_color_set(clipper, 255, 255, 255, 255);
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* evas_object_move(clipper, 10, 10);
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* evas_object_resize(clipper, 20, 50);
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* evas_object_clip_set(obj, clipper);
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* evas_object_show(clipper);
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* @endcode
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* See the full @ref Example_Evas_Object_Manipulation "example".
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*/
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EAPI void evas_object_clip_set (Evas_Object *obj, Evas_Object *clip) EINA_ARG_NONNULL(1, 2);
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@ -2735,14 +2728,11 @@ EAPI void evas_object_clip_set (Evas_Object *obj, Evas
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* evas_object_clipees_get().
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*
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* Example:
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* @code
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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*
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* clipper = evas_object_clip_get(obj);
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* if (clipper) evas_object_show(clipper);
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* @endcode
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* @dontinclude evas-object-manipulation.c
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* @skip if (evas_object_clip_get(d.img) == d.clipper)
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* @until return
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*
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* See the full @ref Example_Evas_Object_Manipulation "example".
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*/
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EAPI Evas_Object *evas_object_clip_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
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@ -2756,21 +2746,8 @@ EAPI Evas_Object *evas_object_clip_get (const Evas_Object *obj
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* the previous clipper. If it wasn't, this has no effect. The object
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* @p obj must be a valid ::Evas_Object.
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*
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* See also evas_object_clip_set(), evas_object_clipees_get() and
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* evas_object_clip_get().
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*
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* Example:
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* @code
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* extern Evas_Object *obj;
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* Evas_Object *clipper;
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*
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* clipper = evas_object_clip_get(obj);
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* if (clipper)
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* {
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* evas_object_clip_unset(obj);
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* evas_object_hide(obj);
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* }
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* @endcode
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* See also evas_object_clip_set() (for an example),
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* evas_object_clipees_get() and evas_object_clip_get().
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*
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*/
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EAPI void evas_object_clip_unset (Evas_Object *obj);
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@ -2887,6 +2864,12 @@ EAPI short evas_object_layer_get (const Evas_Object *obj
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* There might be ocasions where one would like to name his/her
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* objects.
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*
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* Example:
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* @dontinclude evas-events.c
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* @skip d.bg = evas_object_rectangle_add(d.canvas);
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* @until evas_object_name_set(d.bg, "our dear rectangle");
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*
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* See the full @ref Example_Evas_Events "example".
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*/
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EAPI void evas_object_name_set (Evas_Object *obj, const char *name) EINA_ARG_NONNULL(1);
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@ -2896,6 +2879,13 @@ EAPI void evas_object_name_set (Evas_Object *obj, cons
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* @param obj The given object.
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* @return The name of the object or @c NULL, if no name has been given
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* to it.
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*
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* Example:
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* @dontinclude evas-events.c
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* @skip fprintf(stdout, "An object got focused: %s\n",
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* @until evas_focus_get
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*
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* See the full @ref Example_Evas_Events "example".
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*/
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EAPI const char *evas_object_name_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
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@ -2995,6 +2985,13 @@ EAPI void evas_object_del (Evas_Object *obj) EINA
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* @note Naturally, newly created objects are placed at the canvas'
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* origin: <code>0, 0</code>.
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*
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* Example:
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* @dontinclude evas-object-manipulation.c
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* @skip evas_object_image_border_set(d.clipper_border, 3, 3, 3, 3);
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* @until evas_object_show
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*
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* See the full @ref Example_Evas_Object_Manipulation "example".
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*
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* @ingroup Evas_Object_Group_Basic
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*/
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EAPI void evas_object_move (Evas_Object *obj, Evas_Coord x, Evas_Coord y) EINA_ARG_NONNULL(1);
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@ -3055,6 +3052,13 @@ EAPI void evas_object_resize (Evas_Object *obj, Evas
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* @note Use @c NULL pointers on the geometry components you're not
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* interested in: they'll be ignored by the function.
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*
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* Example:
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* @dontinclude evas-events.c
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* @skip int w, h, cw, ch;
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* @until return
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*
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* See the full @ref Example_Evas_Events "example".
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*
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* @ingroup Evas_Object_Group_Basic
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*/
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EAPI void evas_object_geometry_get (const Evas_Object *obj, Evas_Coord *x, Evas_Coord *y, Evas_Coord *w, Evas_Coord *h) EINA_ARG_NONNULL(1);
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@ -3096,6 +3100,13 @@ EAPI void evas_object_show (Evas_Object *obj) EINA
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* @see evas_object_show()
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* @see evas_object_visible_get()
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*
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* Example:
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* @dontinclude evas-object-manipulation.c
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* @skip if (evas_object_visible_get(d.clipper))
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* @until return
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*
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* See the full @ref Example_Evas_Object_Manipulation "example".
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*
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* @ingroup Evas_Object_Group_Basic
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*/
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EAPI void evas_object_hide (Evas_Object *obj) EINA_ARG_NONNULL(1);
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@ -3115,7 +3126,7 @@ EAPI void evas_object_hide (Evas_Object *obj) EINA
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* stacked below other object.
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*
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* @see evas_object_show()
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* @see evas_object_hide()
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* @see evas_object_hide() (for an example)
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*
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* @ingroup Evas_Object_Group_Basic
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*/
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@ -3132,7 +3143,7 @@ EAPI Eina_Bool evas_object_visible_get (const Evas_Object *obj
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* @param b The blue component of the given color.
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* @param a The alpha component of the given color.
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*
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* @see evas_object_color_get()
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* @see evas_object_color_get() (for an example)
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*
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* @ingroup Evas_Object_Group_Basic
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*/
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@ -3167,6 +3178,13 @@ EAPI void evas_object_color_set (Evas_Object *obj, int
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* @note Use @c NULL pointers on the components you're not interested
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* in: they'll be ignored by the function.
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*
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* Example:
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* @dontinclude evas-object-manipulation.c
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* @skip int alpha, r, g, b;
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* @until return
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*
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* See the full @ref Example_Evas_Object_Manipulation "example".
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*
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* @ingroup Evas_Object_Group_Basic
|
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*/
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||||
EAPI void evas_object_color_get (const Evas_Object *obj, int *r, int *g, int *b, int *a) EINA_ARG_NONNULL(1);
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|
@ -3202,6 +3220,13 @@ EAPI Evas *evas_object_evas_get (const Evas_Object *obj
|
|||
* For Evas smart objects (see @ref Evas_Smart_Group), the name of the
|
||||
* smart class itself is returned on this call. For the built-in
|
||||
* clipped smart object, it is <c>"EvasObjectSmartClipped"</c>.
|
||||
*
|
||||
* Example:
|
||||
* @dontinclude evas-object-manipulation.c
|
||||
* @skip d.img = evas_object_image_filled_add(d.canvas);
|
||||
* @until border on the
|
||||
*
|
||||
* See the full @ref Example_Evas_Object_Manipulation "example".
|
||||
*/
|
||||
EAPI const char *evas_object_type_get (const Evas_Object *obj) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_PURE;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue