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From: 김지훈 <imfine98@gmail.com> 

elm_photocam widget does not support keyboard input.
This patch makes elm_photocam be able to process keyboard input such
as Left,
Right, Up, Down, PgDn, and PgUp key.
In addition, image will be zoomed in or out when '+' or '-' key in
keypad is pressed.

Please review it and let me know if there is any problem in this patch.



SVN revision: 55842
This commit is contained in:
김지훈 2011-01-04 10:09:48 +00:00 committed by Carsten Haitzler
parent dda2eae31a
commit ccfcd3ed74
1 changed files with 88 additions and 0 deletions
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88
legacy/elementary/src/lib/elm_photocam.c
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@ -143,6 +143,8 @@ static void _on_focus_hook(void *data, Evas_Object *obj);
//static void _show_region_hook(void *data, Evas_Object *obj);
static void _sizing_eval(Evas_Object *obj);
static void _calc_job(void *data);
static Eina_Bool _event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__,
Evas_Callback_Type type, void *event_info);
static void grid_place(Evas_Object *obj, Grid *g, Evas_Coord px, Evas_Coord py, Evas_Coord ox, Evas_Coord oy, Evas_Coord ow, Evas_Coord oh);
static void grid_clear(Evas_Object *obj, Grid *g);
static Grid *grid_create(Evas_Object *obj);
@ -957,6 +959,91 @@ _scr_scroll(void *data, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__
evas_object_smart_callback_call(data, "scroll", NULL);
}
static Eina_Bool
_event_hook(Evas_Object *obj, Evas_Object *src __UNUSED__,
Evas_Callback_Type type, void *event_info)
{
double zoom;
if (type != EVAS_CALLBACK_KEY_DOWN) return EINA_FALSE;
Evas_Event_Key_Down *ev = event_info;
Widget_Data *wd = elm_widget_data_get(obj);
if (!wd) return EINA_FALSE;
if (ev->event_flags & EVAS_EVENT_FLAG_ON_HOLD) return EINA_FALSE;
Evas_Coord x = 0;
Evas_Coord y = 0;
Evas_Coord step_x = 0;
Evas_Coord step_y = 0;
Evas_Coord v_w = 0;
Evas_Coord v_h = 0;
Evas_Coord page_x = 0;
Evas_Coord page_y = 0;
elm_smart_scroller_child_pos_get(wd->scr, &x, &y);
elm_smart_scroller_step_size_get(wd->scr, &step_x, &step_y);
elm_smart_scroller_page_size_get(wd->scr, &page_x, &page_y);
elm_smart_scroller_child_viewport_size_get(wd->scr, &v_w, &v_h);
if ((!strcmp(ev->keyname, "Left")) ||
(!strcmp(ev->keyname, "KP_Left")))
{
x -= step_x;
}
else if ((!strcmp(ev->keyname, "Right")) ||
(!strcmp(ev->keyname, "KP_Right")))
{
x += step_x;
}
else if ((!strcmp(ev->keyname, "Up")) ||
(!strcmp(ev->keyname, "KP_Up")))
{
y -= step_y;
}
else if ((!strcmp(ev->keyname, "Down")) ||
(!strcmp(ev->keyname, "KP_Down")))
{
y += step_y;
}
else if ((!strcmp(ev->keyname, "Prior")) ||
(!strcmp(ev->keyname, "KP_Prior")))
{
if (page_y < 0)
y -= -(page_y * v_h) / 100;
else
y -= page_y;
}
else if ((!strcmp(ev->keyname, "Next")) ||
(!strcmp(ev->keyname, "KP_Next")))
{
if (page_y < 0)
y += -(page_y * v_h) / 100;
else
y += page_y;
}
else if ((!strcmp(ev->keyname, "KP_Add")))
{
zoom = elm_photocam_zoom_get(obj);
zoom -= 0.5;
elm_photocam_zoom_mode_set(obj, ELM_PHOTOCAM_ZOOM_MODE_MANUAL);
elm_photocam_zoom_set(obj, zoom);
return EINA_TRUE;
}
else if ((!strcmp(ev->keyname, "KP_Subtract")))
{
zoom = elm_photocam_zoom_get(obj);
zoom += 0.5;
elm_photocam_zoom_mode_set(obj, ELM_PHOTOCAM_ZOOM_MODE_MANUAL);
elm_photocam_zoom_set(obj, zoom);
return EINA_TRUE;
}
else return EINA_FALSE;
ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
elm_smart_scroller_child_pos_set(wd->scr, x, y);
return EINA_TRUE;
}
/**
* Add a new Photocam object
*
@ -989,6 +1076,7 @@ elm_photocam_add(Evas_Object *parent)
elm_widget_del_hook_set(obj, _del_hook);
elm_widget_theme_hook_set(obj, _theme_hook);
elm_widget_can_focus_set(obj, EINA_TRUE);
elm_widget_event_hook_set(obj, _event_hook);
wd->scr = elm_smart_scroller_add(e);
elm_smart_scroller_widget_set(wd->scr, obj);