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/* TODO: support different preference modes ala edje */
#include "e.h"
typedef struct _E_Widget_Data E_Widget_Data;
struct _E_Widget_Data
{
Evas_Object *obj;
Evas_Object *child;
int aspect_w, aspect_h;
int aspect_preference;
double align_x, align_y;
};
static void
_e_wid_del_hook(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (!wd) return;
free(wd);
}
static void
_e_wid_reconfigure(E_Widget_Data *wd)
{
int px, py, pw, ph;
int cx, cy, cw, ch;
double ap, ad;
if (!wd->obj || !wd->child) return;
evas_object_geometry_get(wd->obj, &px, &py, &pw, &ph);
if (ph == 0)
{
evas_object_resize(wd->child, 0, 0);
return;
}
ap = (double)pw / ph;
ad = (double)(wd->aspect_w) / wd->aspect_h;
if (ap >= ad)
{
ch = ph;
cw = (ch * wd->aspect_w) / wd->aspect_h;
}
else
{
cw = pw;
ch = (cw * wd->aspect_h) / wd->aspect_w;
}
cx = px + (wd->align_x * (pw - cw));
cy = py + (wd->align_y * (ph - ch));
evas_object_resize(wd->child, cw, ch);
evas_object_move(wd->child, cx, cy);
}
static void
_cb_reconfigure(void *data, Evas *e EINA_UNUSED, Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
E_Widget_Data *wd;
wd = data;
_e_wid_reconfigure(wd);
}
E_API Evas_Object *
e_widget_aspect_add(Evas *evas, int w, int h)
{
Evas_Object *obj;
E_Widget_Data *wd;
obj = e_widget_add(evas);
wd = calloc(1, sizeof(E_Widget_Data));
wd->obj = obj;
e_widget_data_set(obj, wd);
e_widget_del_hook_set(obj, _e_wid_del_hook);
evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _cb_reconfigure, wd);
evas_object_event_callback_add(obj, EVAS_CALLBACK_MOVE, _cb_reconfigure, wd);
wd->align_x = 0.5;
wd->align_y = 0.5;
wd->aspect_w = w;
wd->aspect_h = h;
_e_wid_reconfigure(wd);
return obj;
}
E_API void
e_widget_aspect_aspect_set(Evas_Object *obj, int w, int h)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (!wd) return;
wd->aspect_w = w;
wd->aspect_h = h;
_e_wid_reconfigure(wd);
}
E_API void
e_widget_aspect_align_set(Evas_Object *obj, double align_x, double align_y)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (!wd) return;
wd->align_x = align_x;
wd->align_y = align_y;
_e_wid_reconfigure(wd);
}
E_API void
e_widget_aspect_child_set(Evas_Object *obj, Evas_Object *child)
{
E_Widget_Data *wd;
int mw, mh;
wd = e_widget_data_get(obj);
if (!wd) return;
wd->child = child;
e_widget_size_min_get(child, &mw, &mh);
e_widget_size_min_set(obj, mw, mh);
e_widget_sub_object_add(obj, child);
_e_wid_reconfigure(wd);
}