Toolbar Example - Simple Items

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Toolbar Example - Simple Items

This code places an Elementary toolbar widget on a window, to exemplify part of the widget's API.

Let's start adding a button to our window, that will have its text modified depending on which item is selected. It's used just to exemplify how to change a window content from the toolbar.

bt = elm_button_add(win);
elm_button_add
Evas_Object * elm_button_add(Evas_Object *parent)
Add a new button to the parent's canvas.
Definition: efl_ui_button.c:459
evas_object_size_hint_weight_set(bt, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
evas_object_size_hint_align_set(bt, EVAS_HINT_FILL, EVAS_HINT_FILL);
elm_object_text_set(bt, "Button");
evas_object_show(bt);
EVAS_HINT_EXPAND
#define EVAS_HINT_EXPAND
Use with evas_object_size_hint_weight_set(), evas_object_size_hint_weight_get(), evas_object_size_hin...
Definition: Evas_Common.h:297
EVAS_HINT_FILL
#define EVAS_HINT_FILL
Use with evas_object_size_hint_align_set(), evas_object_size_hint_align_get(), evas_object_size_hint_...
Definition: Evas_Common.h:298
evas_object_show
EVAS_API void evas_object_show(Evas_Object *eo_obj)
Makes the given Evas object visible.
Definition: evas_object_main.c:1814
evas_object_size_hint_weight_set
EVAS_API void evas_object_size_hint_weight_set(Evas_Object *obj, double x, double y)
Sets the hints for an object's weight.
Definition: evas_object_main.c:2638
evas_object_size_hint_align_set
EVAS_API void evas_object_size_hint_align_set(Evas_Object *obj, double x, double y)
Sets the hints for an object's alignment.
Definition: evas_object_main.c:2650

Also, we'll need a toolbar widget, obviously:

tb = elm_toolbar_add(win);
elm_toolbar_add
Evas_Object * elm_toolbar_add(Evas_Object *parent)
Add a new toolbar widget to the given parent Elementary (container) object.
Definition: elm_toolbar.c:2979
elm_toolbar_shrink_mode_set(tb, ELM_TOOLBAR_SHRINK_SCROLL);
evas_object_size_hint_weight_set(tb, 0.0, 0.0);
evas_object_size_hint_align_set(tb, EVAS_HINT_FILL, 0.0);
evas_object_show(tb);
elm_toolbar_shrink_mode_set
void elm_toolbar_shrink_mode_set(Elm_Toolbar *obj, Elm_Toolbar_Shrink_Mode shrink_mode)
Control the item displaying mode of a given toolbar widget obj.
Definition: elm_toolbar_eo.legacy.c:75
ELM_TOOLBAR_SHRINK_SCROLL
@ ELM_TOOLBAR_SHRINK_SCROLL
Allow accessing exceeding items through a scroller.
Definition: elm_toolbar_eo.h:32

When appending an item is possible to set an icon, label, and a callback function that will receive passed data.

elm_toolbar_item_append(tb, "document-print", "Print", _item_1_pressed, bt);
elm_toolbar_item_append
Elm_Widget_Item * elm_toolbar_item_append(Elm_Toolbar *obj, const char *icon, const char *label, Evas_Smart_Cb func, const void *data)
Append item to the toolbar.
Definition: elm_toolbar_eo.legacy.c:129
elm_toolbar_item_append(tb, "folder-new", "New Folder", _item_2_pressed, bt);

It's possible to disable items, so the user can't select then. We will disable the third item:

tb_it = elm_toolbar_item_append(tb, "mail-send", "Create and send email",
_item_3_pressed, bt);
elm_object_item_disabled_set(tb_it, EINA_TRUE);
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
elm_object_item_disabled_set
void elm_object_item_disabled_set(Elm_Widget_Item *obj, Eina_Bool disable)
Control the disabled state of a widget item.
Definition: elm_widget_item_eo.legacy.c:111

Our callbacks will just set button's label:

static void
_item_2_pressed(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
Evas_Object *bt = data;
elm_object_text_set(bt, "Create new folder");
}
EINA_UNUSED
#define EINA_UNUSED
Used to indicate that a function parameter is purposely unused.
Definition: eina_types.h:339
Evas_Object
Efl_Canvas_Object Evas_Object
An Evas Object handle.
Definition: Evas_Common.h:185
static void
_item_3_pressed(void *data, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
/* This function won't be called because we disabled item that call it */
Evas_Object *bt = data;
elm_object_text_set(bt, "Create and send email");
}
EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
Evas_Object *win, *bx, *tb, *bt;
Elm_Object_Item *tb_it;
elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);
win = elm_win_util_standard_add("toolbar", "Toolbar Example");
elm_win_autodel_set(win, EINA_TRUE);
bx = elm_box_add(win);
evas_object_size_hint_weight_set(bx, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
elm_win_resize_object_add(win, bx);
evas_object_show(bx);
bt = elm_button_add(win);
evas_object_size_hint_weight_set(bt, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
evas_object_size_hint_align_set(bt, EVAS_HINT_FILL, EVAS_HINT_FILL);
elm_object_text_set(bt, "Button");
evas_object_show(bt);
tb = elm_toolbar_add(win);
elm_toolbar_shrink_mode_set(tb, ELM_TOOLBAR_SHRINK_SCROLL);
evas_object_size_hint_weight_set(tb, 0.0, 0.0);
evas_object_size_hint_align_set(tb, EVAS_HINT_FILL, 0.0);
evas_object_show(tb);
elm_toolbar_item_append(tb, "document-print", "Print", _item_1_pressed, bt);
elm_toolbar_item_append(tb, "folder-new", "New Folder", _item_2_pressed, bt);
tb_it = elm_toolbar_item_append(tb, "mail-send", "Create and send email",
_item_3_pressed, bt);
elm_object_item_disabled_set(tb_it, EINA_TRUE);
elm_toolbar_homogeneous_set(tb, EINA_FALSE);
elm_box_pack_end(bx, tb);
elm_box_pack_end(bx, bt);
evas_object_resize(win, 200, 200);
evas_object_show(win);
elm_run();
return 0;
}
EINA_FALSE
#define EINA_FALSE
boolean value FALSE (numerical value 0)
Definition: eina_types.h:533
elm_box_add
Evas_Object * elm_box_add(Evas_Object *parent)
Add a new box to the parent.
Definition: elm_box.c:363
elm_box_pack_end
void elm_box_pack_end(Elm_Box *obj, Efl_Canvas_Object *subobj)
Add an object at the end of the pack list.
Definition: elm_box_eo.legacy.c:57
Elm_Object_Item
Eo Elm_Object_Item
An Elementary Object item handle.
Definition: elm_object_item.h:6
elm_policy_set
Eina_Bool elm_policy_set(unsigned int policy, int value)
Set a new policy's value (for a given policy group/identifier).
Definition: elm_main.c:1380
elm_run
void elm_run(void)
Run Elementary's main loop.
Definition: elm_main.c:1357
ELM_POLICY_QUIT_LAST_WINDOW_CLOSED
@ ELM_POLICY_QUIT_LAST_WINDOW_CLOSED
quit when the application's last window is closed
Definition: elm_general.h:248
ELM_POLICY_QUIT
@ ELM_POLICY_QUIT
under which circumstances the application should quit automatically.
Definition: elm_general.h:227
elm_toolbar_homogeneous_set
void elm_toolbar_homogeneous_set(Elm_Toolbar *obj, Eina_Bool homogeneous)
Control homogeneous mode.
Definition: elm_toolbar_eo.legacy.c:27
elm_win_util_standard_add
Evas_Object * elm_win_util_standard_add(const char *name, const char *title)
Adds a window object with standard setup.
Definition: efl_ui_win.c:9582
elm_win_resize_object_add
void elm_win_resize_object_add(Eo *obj, Evas_Object *subobj)
Add subobj as a resize object of window obj.
Definition: efl_ui_win.c:8997
elm_win_autodel_set
void elm_win_autodel_set(Eo *obj, Eina_Bool autodel)
Set the window's autodel state.
Definition: efl_ui_win.c:6194
evas_object_resize
EVAS_API void evas_object_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Changes the size of the given Evas object.
Definition: evas_object_main.c:1236

By default, toolbars would display items homogeneously, so item with long labels, like the third, will make all of them occupy a lot of space. To avoid that, we can disable it:

elm_toolbar_homogeneous_set(tb, EINA_FALSE);

Another default behavior, is to add an menu item if we have more items that would fit on toolbar size. To simply enable scroll, without menus, it's required to change toolbar's shrink mode:

elm_toolbar_shrink_mode_set(tb, ELM_TOOLBAR_SHRINK_SCROLL);

See toolbar_example_01.c, whose window should look like this picture: