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