From f00dca3b61208624952e681b778dbe4e586e7555 Mon Sep 17 00:00:00 2001 From: Gustavo Lima Chaves Date: Wed, 4 Jul 2012 21:25:57 +0000 Subject: [PATCH] [evas] Example of Evas interfaces. SVN revision: 73304 --- legacy/evas/doc/examples.dox | 60 ++ legacy/evas/src/examples/Makefile.am | 6 + .../evas/src/examples/evas-smart-interface.c | 790 ++++++++++++++++++ legacy/evas/src/lib/Evas.h | 3 + 4 files changed, 859 insertions(+) create mode 100644 legacy/evas/src/examples/evas-smart-interface.c diff --git a/legacy/evas/doc/examples.dox b/legacy/evas/doc/examples.dox index 2276c48779..65dd513409 100644 --- a/legacy/evas/doc/examples.dox +++ b/legacy/evas/doc/examples.dox @@ -927,6 +927,66 @@ * @example evas-smart-object.c */ +/** + * @page Example_Evas_Smart_Interfaces Evas object smart interfaces + * @dontinclude evas-smart-interface.c + * + * In this example, we illustrate how to create and handle Evas smart + * @b interfaces. Note that we use the same code base of the @ref + * Example_Evas_Smart_Objects example, here. We just augment it with + * an interfaces demonstration. + * + * A smart interface is just a functions interface a given smart + * objcet is declaring to support and or use. In Evas, interfaces are + * very simple: no interface inheritance, no interface + * overriding. Their purpose is to extend an object's capabilities and + * behaviour beyound the sub-classing schema. + * + * Here, together with a custom smart object, we create and declare + * the object as using an Evas interface. It'll have a custom + * function, too, besides the @c add() and del() obligatory ones. To + * demonstrate interface data, which is bound to object @b instances, + * we'll have a string as this data. + * + * Here is where we declare our interface: + * @skip static const char iface1_data[] + * @until (Evas_Smart_Interface *)&iface1, NULL + * @until }; + * + * Note that there's error checking for interfaces creation, by means of + * the @c add() method's return value (@c _iface1_add(), here). + * + * Now note that here we are filling in the interface's fields dinamically. + * Let's move on to that code region: + * + * @dontinclude evas-smart-interface.c + * @skip iface = (Evas_Smart_Example_Interface *)&iface1; + * @until d.smt = evas_smart_example_add(d.evas); + * + * As important as setting the function pointers, is declaring the @c + * private_size as to match exactly the size of the data blob we want + * to have allocated for us by Evas. This will happen automatically + * inside @c evas_smart_example_add(). Later, on this code, we deal + * exactly with that data blob, more specifically writing on it (as + * it's not done inside @c _iface1_add(), here: + * + * @dontinclude evas-smart-interface.c + * @skip iface = (Evas_Smart_Example_Interface *)evas_object_smart_interface_get + * @until } + * + * Before accessing the interface data, we exercise the interface + * fetching call evas_object_smart_interface_get(), with the name + * string we used to be interface's name. With that handle in hands, + * we issue evas_object_smart_interface_data_get() and write the + * string we want as data on that memory region. That will make up for + * the string you get on @c _iface1_del(). + * + * The full example follows. + * + * @include evas-smart-interface.c + * @example evas-smart-interface.c + */ + /** * @page Example_Evas_Text Evas text object example * diff --git a/legacy/evas/src/examples/Makefile.am b/legacy/evas/src/examples/Makefile.am index 757ca54260..e03ff9e751 100644 --- a/legacy/evas/src/examples/Makefile.am +++ b/legacy/evas/src/examples/Makefile.am @@ -79,6 +79,10 @@ examples_PROGRAMS += evas_smart_object evas_smart_object_SOURCES = evas-smart-object.c evas_smart_object_LDADD = $(top_builddir)/src/lib/libevas.la @ECORE_EVAS_LIBS@ +examples_PROGRAMS += evas_smart_interface +evas_smart_interface_SOURCES = evas-smart-interface.c +evas_smart_interface_LDADD = $(top_builddir)/src/lib/libevas.la @ECORE_EVAS_LIBS@ + examples_PROGRAMS += evas_box evas_box_SOURCES = evas-box.c evas_box_LDADD = $(top_builddir)/src/lib/libevas.la @ECORE_EVAS_LIBS@ @EINA_LIBS@ @@ -129,6 +133,7 @@ files_DATA += \ $(srcdir)/evas-map-utils.c \ $(srcdir)/evas-text.c \ $(srcdir)/evas-smart-object.c \ + $(srcdir)/evas-smart-interface.c \ $(srcdir)/evas-box.c endif @@ -146,6 +151,7 @@ EXTRA_DIST = $(EDCS) \ $(srcdir)/evas-map-utils.c \ $(srcdir)/evas-text.c \ $(srcdir)/evas-smart-object.c \ + $(srcdir)/evas-smart-interface.c \ $(srcdir)/evas-box.c \ $(srcdir)/evas-table.c \ $(srcdir)/enlightenment.png \ diff --git a/legacy/evas/src/examples/evas-smart-interface.c b/legacy/evas/src/examples/evas-smart-interface.c new file mode 100644 index 0000000000..97b9a9e6a6 --- /dev/null +++ b/legacy/evas/src/examples/evas-smart-interface.c @@ -0,0 +1,790 @@ +/** + * Simple Evas example illustrating Evas smart interfaces + * + * You'll need at least one engine built for it (excluding the buffer + * one). See stdout/stderr for output. + * + * @verbatim + * gcc -o evas-smart-interface evas-smart-interface.c `pkg-config --libs --cflags evas ecore ecore-evas` + * @endverbatim + */ + +#ifdef HAVE_CONFIG_H + +#include "config.h" +#else + +#define PACKAGE_EXAMPLES_DIR "." +#define __UNUSED__ + +#endif + +#include +#include +#include +#include + +#define WIDTH (320) +#define HEIGHT (240) + +static const char *commands = \ + "commands are:\n" + "\tl - insert child rectangle on the left\n" + "\tr - insert child rectangle on the right\n" + "\tw - remove and delete all members from the smart object\n" + "\tright arrow - move smart object to the right\n" + "\tleft arrow - move smart object to the left\n" + "\tup arrow - move smart object up\n" + "\tdown arrow - move smart object down\n" + "\td - decrease smart object's size\n" + "\ti - increase smart object's size\n" + "\tc - change smart object's clipper color\n" + "\th - print help\n" + "\tq - quit\n" +; + +#define WHITE {255, 255, 255, 255} +#define RED {255, 0, 0, 255} +#define GREEN {0, 255, 0, 255} +#define BLUE {0, 0, 255, 255} + +struct test_data +{ + Ecore_Evas *ee; + Evas *evas; + Evas_Object *smt, *bg, *clipper, *rects[2]; +}; + +struct color_tuple +{ + int r, g, b, a; +} clipper_colors[4] = {WHITE, RED, GREEN, BLUE}; +int cur_color = 0; + +static const char * +_index_to_color(int i) +{ + switch (i) + { + case 0: + return "WHITE (default)"; + + case 1: + return "RED"; + + case 2: + return "GREEN"; + + case 3: + return "BLUE"; + + default: + return "other"; + } +} + +static struct test_data d = {0}; +static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png"; + +#define _evas_smart_example_type "Evas_Smart_Example" + +static const char iface1_data[] = "iface1_data"; +static const char IFACE1_NAME[] = "iface1"; + +static Eina_Bool _iface1_add(Evas_Object *); +static void _iface1_del(Evas_Object *); +static void _iface1_custom_fn(Evas_Object *); + +typedef struct _Evas_Smart_Example_Interface Evas_Smart_Example_Interface; +struct _Evas_Smart_Example_Interface +{ + Evas_Smart_Interface base; + void (*example_func)(Evas_Object *obj); +}; + +static Evas_Smart_Example_Interface iface1; + +static Eina_Bool +_iface1_add(Evas_Object *obj) +{ + printf("iface1's add()!\n"); + + return EINA_TRUE; +} + +static void +_iface1_del(Evas_Object *obj) +{ + printf("iface1's del()! Data is %s\n", + (char *)evas_object_smart_interface_data_get + (obj, (Evas_Smart_Interface *)&iface1)); +} + +static void +_iface1_custom_fn(Evas_Object *obj) +{ + printf("iface1's custom_fn()!\n"); +} + +static const Evas_Smart_Interface *_smart_interfaces[] = +{ + (Evas_Smart_Interface *)&iface1, NULL +}; + +#define EVT_CHILDREN_NUMBER_CHANGED "children,changed" + +static const Evas_Smart_Cb_Description _smart_callbacks[] = +{ + {EVT_CHILDREN_NUMBER_CHANGED, "i"}, + {NULL, NULL} +}; + +typedef struct _Evas_Smart_Example_Data Evas_Smart_Example_Data; +/* + * This structure augments clipped smart object's instance data, + * providing extra members required by our example smart object's + * implementation. + */ +struct _Evas_Smart_Example_Data +{ + Evas_Object_Smart_Clipped_Data base; + Evas_Object *children[2], *border; + int child_count; +}; + +#define EVAS_SMART_EXAMPLE_DATA_GET(o, ptr) \ + Evas_Smart_Example_Data * ptr = evas_object_smart_data_get(o) + +#define EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN(o, ptr) \ + EVAS_SMART_EXAMPLE_DATA_GET(o, ptr); \ + if (!ptr) \ + { \ + fprintf(stderr, "No widget data for object %p (%s)!", \ + o, evas_object_type_get(o)); \ + fflush(stderr); \ + abort(); \ + return; \ + } + +#define EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN_VAL(o, ptr, val) \ + EVAS_SMART_EXAMPLE_DATA_GET(o, ptr); \ + if (!ptr) \ + { \ + fprintf(stderr, "No widget data for object %p (%s)!", \ + o, evas_object_type_get(o)); \ + fflush(stderr); \ + abort(); \ + return val; \ + } + +EVAS_SMART_SUBCLASS_IFACE_NEW + (_evas_smart_example_type, _evas_smart_example, Evas_Smart_Class, + Evas_Smart_Class, evas_object_smart_clipped_class_get, _smart_callbacks, + _smart_interfaces); + +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; + + ecore_evas_geometry_get(ee, NULL, NULL, &w, &h); + evas_object_resize(d.bg, w, h); +} + +static void +_on_child_del(void *data, + Evas *evas __UNUSED__, + Evas_Object *o, + void *einfo __UNUSED__) +{ + Evas_Object *example_smart = data; + long idx; + + EVAS_SMART_EXAMPLE_DATA_GET(example_smart, priv); + + idx = (long)evas_object_data_get(o, "index"); + idx--; + + priv->children[idx] = NULL; + + evas_object_smart_member_del(o); + evas_object_smart_changed(example_smart); +} + +static void +_evas_smart_example_child_callbacks_unregister(Evas_Object *obj) +{ + evas_object_data_set(obj, "index", NULL); + evas_object_event_callback_del(obj, EVAS_CALLBACK_FREE, _on_child_del); +} + +static void +_evas_smart_example_child_callbacks_register(Evas_Object *o, + Evas_Object *child, + long idx) +{ + evas_object_event_callback_add(child, EVAS_CALLBACK_FREE, _on_child_del, o); + evas_object_data_set(child, "index", (void *)(++idx)); +} + +/* create and setup a new example smart object's internals */ +static void +_evas_smart_example_smart_add(Evas_Object *o) +{ + EVAS_SMART_DATA_ALLOC(o, Evas_Smart_Example_Data); + + /* this is a border around the smart object's area, delimiting it */ + priv->border = evas_object_image_filled_add(evas_object_evas_get(o)); + evas_object_image_file_set(priv->border, border_img_path, NULL); + evas_object_image_border_set(priv->border, 3, 3, 3, 3); + evas_object_image_border_center_fill_set( + priv->border, EVAS_BORDER_FILL_NONE); + evas_object_smart_member_add(priv->border, o); + + _evas_smart_example_parent_sc->add(o); +} + +static void +_evas_smart_example_smart_del(Evas_Object *o) +{ + EVAS_SMART_EXAMPLE_DATA_GET(o, priv); + + if (priv->children[0]) + { + _evas_smart_example_child_callbacks_unregister(priv->children[0]); + priv->children[0] = NULL; + } + + if (priv->children[1]) + { + _evas_smart_example_child_callbacks_unregister(priv->children[1]); + priv->children[1] = NULL; + } + + _evas_smart_example_parent_sc->del(o); +} + +static void +_evas_smart_example_smart_show(Evas_Object *o) +{ + EVAS_SMART_EXAMPLE_DATA_GET(o, priv); + + if (priv->children[0]) evas_object_show(priv->children[0]); + if (priv->children[1]) evas_object_show(priv->children[1]); + evas_object_show(priv->border); + + _evas_smart_example_parent_sc->show(o); +} + +static void +_evas_smart_example_smart_hide(Evas_Object *o) +{ + EVAS_SMART_EXAMPLE_DATA_GET(o, priv); + + if (priv->children[0]) evas_object_hide(priv->children[0]); + if (priv->children[1]) evas_object_hide(priv->children[1]); + evas_object_hide(priv->border); + + _evas_smart_example_parent_sc->hide(o); +} + +static void +_evas_smart_example_smart_resize(Evas_Object *o, + Evas_Coord w, + Evas_Coord h) +{ + Evas_Coord ow, oh; + evas_object_geometry_get(o, NULL, NULL, &ow, &oh); + if ((ow == w) && (oh == h)) return; + + /* this will trigger recalculation */ + evas_object_smart_changed(o); +} + +/* act on child objects' properties, before rendering */ +static void +_evas_smart_example_smart_calculate(Evas_Object *o) +{ + Evas_Coord x, y, w, h; + + EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN(o, priv); + evas_object_geometry_get(o, &x, &y, &w, &h); + + evas_object_resize(priv->border, w, h); + evas_object_move(priv->border, x, y); + + if (priv->children[0]) + { + evas_object_move(priv->children[0], x + 3, y + 3); + evas_object_resize(priv->children[0], (w / 2) - 3, (h / 2) - 3); + } + + if (priv->children[1]) + { + evas_object_move(priv->children[1], x + (w / 2), y + (h / 2)); + evas_object_resize(priv->children[1], (w / 2) - 3, (h / 2) - 3); + } +} + +/* setting our smart interface */ +static void +_evas_smart_example_smart_set_user(Evas_Smart_Class *sc) +{ + /* specializing these two */ + sc->add = _evas_smart_example_smart_add; + sc->del = _evas_smart_example_smart_del; + sc->show = _evas_smart_example_smart_show; + sc->hide = _evas_smart_example_smart_hide; + + /* clipped smart object has no hook on resizes or calculations */ + sc->resize = _evas_smart_example_smart_resize; + sc->calculate = _evas_smart_example_smart_calculate; +} + +/* BEGINS example smart object's own interface */ + +/* add a new example smart object to a canvas */ +Evas_Object * +evas_smart_example_add(Evas *evas) +{ + return evas_object_smart_add(evas, _evas_smart_example_smart_class_new()); +} + +static void +_evas_smart_example_remove_do(Evas_Smart_Example_Data *priv, + Evas_Object *child, + int idx) +{ + priv->children[idx] = NULL; + priv->child_count--; + _evas_smart_example_child_callbacks_unregister(child); + evas_object_smart_member_del(child); +} + +/* remove a child element, return its pointer (or NULL on errors) */ +Evas_Object * +evas_smart_example_remove(Evas_Object *o, + Evas_Object *child) +{ + long idx; + + EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN_VAL(o, priv, NULL); + + if (priv->children[0] != child && priv->children[1] != child) + { + fprintf(stderr, "You are trying to remove something not belonging to" + " the example smart object!\n"); + return NULL; + } + + idx = (long)evas_object_data_get(child, "index"); + idx--; + + _evas_smart_example_remove_do(priv, child, idx); + + evas_object_smart_callback_call( + o, EVT_CHILDREN_NUMBER_CHANGED, (void *)(long)priv->child_count); + evas_object_smart_changed(o); + + return child; +} + +/* set to return any previous object set to the left position of the + * smart object or NULL, if any (or on errors) */ +Evas_Object * +evas_smart_example_set_left(Evas_Object *o, + Evas_Object *child) +{ + Evas_Object *ret = NULL; + + EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN_VAL(o, priv, NULL); + if (!child) + return NULL; + + if (priv->children[1] == child) + { + fprintf(stderr, "You mustn't place a child on both slots of" + " the example smart object!\n"); + return NULL; + } + + if (priv->children[0]) + { + if (priv->children[0] != child) + { + ret = priv->children[0]; + _evas_smart_example_remove_do(priv, priv->children[0], 0); + } + else return child; + } + + priv->children[0] = child; + _evas_smart_example_child_callbacks_register(o, child, 0); + evas_object_smart_member_add(child, o); + evas_object_smart_changed(o); + + priv->child_count++; + if (!ret) + { + evas_object_smart_callback_call( + o, EVT_CHILDREN_NUMBER_CHANGED, (void *)(long)priv->child_count); + } + + return ret; +} + +/* set to return any previous object set to the right position of the + * smart object or NULL, if any (or on errors) */ +Evas_Object * +evas_smart_example_set_right(Evas_Object *o, + Evas_Object *child) +{ + Evas_Object *ret = NULL; + + EVAS_SMART_EXAMPLE_DATA_GET_OR_RETURN_VAL(o, priv, NULL); + if (!child) + return NULL; + + if (priv->children[0] == child) + { + fprintf(stderr, "You mustn't place a child on both slots of" + " the example smart object!\n"); + return NULL; + } + + if (priv->children[1]) + { + if (priv->children[1] != child) + { + ret = priv->children[1]; + _evas_smart_example_remove_do(priv, priv->children[1], 1); + } + else return child; + } + + priv->children[1] = child; + _evas_smart_example_child_callbacks_register(o, child, 1); + evas_object_smart_member_add(child, o); + evas_object_smart_changed(o); + + priv->child_count++; + if (!ret) + { + evas_object_smart_callback_call( + o, EVT_CHILDREN_NUMBER_CHANGED, (void *)(long)priv->child_count); + } + + return ret; +} + +/* END OF example smart object's own interface */ + +static void +_on_keydown(void *data __UNUSED__, + Evas *evas __UNUSED__, + Evas_Object *o __UNUSED__, + void *einfo) +{ + Evas_Event_Key_Down *ev = einfo; + + if (strcmp(ev->keyname, "q") == 0) /* print help */ + { + _on_destroy(NULL); + return; + } + + if (strcmp(ev->keyname, "h") == 0) /* print help */ + { + fprintf(stdout, commands); + return; + } + + if (strcmp(ev->keyname, "w") == 0) /* clear out smart object (WRT + * members) */ + { + if (d.rects[0]) + { + evas_smart_example_remove(d.smt, d.rects[0]); + evas_object_del(d.rects[0]); + } + if (d.rects[1]) + { + evas_smart_example_remove(d.smt, d.rects[1]); + evas_object_del(d.rects[1]); + } + + memset(d.rects, 0, sizeof(d.rects)); + + fprintf(stdout, "Deleting all members of the smart object.\n"); + + return; + } + + if (strcmp(ev->keyname, "l") == 0) /* insert random colored + * rectangle on the left */ + { + Evas_Object *rect = evas_object_rectangle_add(d.evas), *prev; + evas_object_color_set( + rect, rand() % 255, rand() % 255, rand() % 255, 255); + evas_object_show(rect); + + prev = evas_smart_example_set_left(d.smt, rect); + d.rects[0] = rect; + + fprintf(stdout, "Setting smart object's left spot with a new" + " rectangle.\n"); + fprintf(stdout, "Checking its new smart object parent: %s\n", + evas_object_smart_parent_get(rect) == d.smt ? "OK!" : + "Failure!"); + if (prev) + { + int r, g, b; + + evas_object_color_get(prev, &r, &g, &b, NULL); + fprintf(stdout, "Deleting previous left child," + " which had colors (%d, %d, %d)\n", r, g, b); + evas_object_del(prev); + } + + return; + } + + if (strcmp(ev->keyname, "r") == 0) /* insert random colored + * rectangle on the right */ + { + Evas_Object *rect = evas_object_rectangle_add(d.evas), *prev; + evas_object_color_set( + rect, rand() % 255, rand() % 255, rand() % 255, 255); + evas_object_show(rect); + + prev = evas_smart_example_set_right(d.smt, rect); + d.rects[1] = rect; + + fprintf(stdout, "Setting smart object's right spot with a new" + " rectangle.\n"); + fprintf(stdout, "Checking its new smart object parent: %s\n", + evas_object_smart_parent_get(rect) == d.smt ? "OK!" : + "Failure!"); + if (prev) + { + int r, g, b; + + evas_object_color_get(prev, &r, &g, &b, NULL); + fprintf(stdout, "Deleting previous right child," + " which had colors (%d, %d, %d)\n", r, g, b); + evas_object_del(prev); + } + + return; + } + + /* move smart object along the canvas */ + if (strcmp(ev->keyname, "Right") == 0 || strcmp(ev->keyname, "Left") == 0 || + strcmp(ev->keyname, "Up") == 0 || strcmp(ev->keyname, "Down") == 0) + { + Evas_Coord x, y; + + evas_object_geometry_get(d.smt, &x, &y, NULL, NULL); + + switch (ev->keyname[0]) + { + case 'R': + x += 20; + break; + + case 'L': + x -= 20; + break; + + case 'U': + y -= 20; + break; + + case 'D': + y += 20; + break; + } + + evas_object_move(d.smt, x, y); + + return; + } + + /* increase smart object's size */ + if (strcmp(ev->keyname, "i") == 0) + { + Evas_Coord w, h; + + evas_object_geometry_get(d.smt, NULL, NULL, &w, &h); + + w *= 1.1; + h *= 1.1; + + evas_object_resize(d.smt, w, h); + + return; + } + + /* decrease smart object's size */ + if (strcmp(ev->keyname, "d") == 0) + { + Evas_Coord w, h; + + evas_object_geometry_get(d.smt, NULL, NULL, &w, &h); + + w *= 0.9; + h *= 0.9; + + evas_object_resize(d.smt, w, h); + + return; + } + + /* change smart object's clipper color */ + if (strcmp(ev->keyname, "c") == 0) + { + cur_color = (cur_color + 1) % 4; + + evas_object_color_set( + d.clipper, clipper_colors[cur_color].r, clipper_colors[cur_color].g, + clipper_colors[cur_color].b, clipper_colors[cur_color].a); + + fprintf(stderr, "Changing clipper's color to %s\n", + _index_to_color(cur_color)); + + return; + } +} + +static void +/* callback on number of member objects changed */ +_on_example_smart_object_child_num_change(void *data __UNUSED__, + Evas_Object *obj __UNUSED__, + void *event_info) +{ + fprintf(stdout, "Number of child members on our example smart" + " object changed to %lu\n", (long)event_info); +} + +int +main(void) +{ + const Evas_Smart_Cb_Description **descriptions; + Evas_Smart_Example_Interface *iface; + unsigned int count; + Eina_Bool ret; + + srand(time(NULL)); + + if (!ecore_evas_init()) + return EXIT_FAILURE; + + /* this will give you a window with an Evas canvas under the first + * engine available */ + d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL); + if (!d.ee) + goto error; + + ecore_evas_callback_destroy_set(d.ee, _on_destroy); + ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb); + ecore_evas_show(d.ee); + + /* the canvas pointer, de facto */ + d.evas = ecore_evas_get(d.ee); + + d.bg = evas_object_rectangle_add(d.evas); + evas_object_color_set(d.bg, 255, 255, 255, 255); + evas_object_move(d.bg, 0, 0); + evas_object_resize(d.bg, WIDTH, HEIGHT); + evas_object_show(d.bg); + + iface = (Evas_Smart_Example_Interface *)&iface1; + iface->base.name = IFACE1_NAME; + iface->base.private_size = sizeof(iface1_data); + iface->base.add = _iface1_add; + iface->base.del = _iface1_del; + iface->example_func = _iface1_custom_fn; + + d.smt = evas_smart_example_add(d.evas); + + evas_object_move(d.smt, WIDTH / 4, HEIGHT / 4); + evas_object_resize(d.smt, WIDTH / 2, HEIGHT / 2); + evas_object_show(d.smt); + + ret = evas_object_smart_type_check(d.smt, _evas_smart_example_type); + fprintf(stdout, "Adding smart object of type \"%s\" to the canvas: %s.\n", + _evas_smart_example_type, ret ? "success" : "failure"); + + d.clipper = evas_object_smart_clipped_clipper_get(d.smt); + fprintf(stdout, "Checking if clipped smart object's clipper is a " + "\"static\" one: %s\n", evas_object_static_clip_get( + d.clipper) ? "yes" : "no"); + + evas_object_color_set( + d.clipper, clipper_colors[cur_color].r, clipper_colors[cur_color].g, + clipper_colors[cur_color].b, clipper_colors[cur_color].a); + + evas_object_smart_callbacks_descriptions_get( + d.smt, &descriptions, &count, NULL, NULL); + + for (; *descriptions; descriptions++) + { + fprintf(stdout, "We've found a smart callback on the smart object!" + "\n\tname: %s\n\ttype: %s\n", (*descriptions)->name, + (*descriptions)->type); + + if (strcmp((*descriptions)->type, "i")) continue; + /* we know we don't have other types of smart callbacks + * here, just playing with it */ + + /* for now, we know the only one callback is the one + * reporting number of member objects changed on the + * example smart object */ + evas_object_smart_callback_add( + d.smt, (*descriptions)->name, + _on_example_smart_object_child_num_change, NULL); + } + + evas_object_focus_set(d.bg, EINA_TRUE); + evas_object_event_callback_add( + d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL); + + iface = (Evas_Smart_Example_Interface *)evas_object_smart_interface_get + (d.smt, IFACE1_NAME); + if (iface) + { + char *data; + + fprintf(stdout, "We've found a smart interface on the smart object!" + "\n\tname: %s\n", iface->base.name); + + fprintf(stdout, "Setting its interface data...\n"); + data = evas_object_smart_interface_data_get + (d.smt, (Evas_Smart_Interface *)iface); + memcpy(data, iface1_data, sizeof(iface1_data)); + + fprintf(stdout, "Calling an interface's function...\n"); + iface->example_func(d.smt); + } + + fprintf(stdout, commands); + ecore_main_loop_begin(); + + ecore_evas_free(d.ee); + ecore_evas_shutdown(); + return 0; + +error: + fprintf(stderr, "you got to have at least one evas engine built and linked" + " up to ecore-evas for this example to run properly.\n"); + ecore_evas_shutdown(); + return -1; +} diff --git a/legacy/evas/src/lib/Evas.h b/legacy/evas/src/lib/Evas.h index 9f15764793..6c22f40dad 100644 --- a/legacy/evas/src/lib/Evas.h +++ b/legacy/evas/src/lib/Evas.h @@ -9664,6 +9664,9 @@ struct _Evas_Smart_Class * function pointers must be defined, too, which will be called at * object creation and deletion times. * + * See also some @ref Example_Evas_Smart_Interfaces "examples" on + * smart interfaces. + * * @since 1.3 * * @ingroup Evas_Smart_Group