274 lines
6.6 KiB
C
274 lines
6.6 KiB
C
/*
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* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
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*/
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#include "e.h"
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#define SMART_NAME "e_pan"
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#define API_ENTRY E_Smart_Data *sd; sd = evas_object_smart_data_get(obj); if ((!obj) || (!sd) || (evas_object_type_get(obj) && strcmp(evas_object_type_get(obj), SMART_NAME)))
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#define INTERNAL_ENTRY E_Smart_Data *sd; sd = evas_object_smart_data_get(obj); if (!sd) return;
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typedef struct _E_Smart_Data E_Smart_Data;
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struct _E_Smart_Data
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{
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Evas_Object *smart_obj, *child_obj;
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Evas_Coord x, y, w, h;
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Evas_Coord child_w, child_h, px, py;
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};
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/* local subsystem functions */
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static void _e_smart_child_del_hook(void *data, Evas *e, Evas_Object *obj, void *event_info);
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static void _e_smart_child_resize_hook(void *data, Evas *e, Evas_Object *obj, void *event_info);
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static void _e_smart_reconfigure(E_Smart_Data *sd);
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static void _e_smart_add(Evas_Object *obj);
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static void _e_smart_del(Evas_Object *obj);
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static void _e_smart_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y);
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static void _e_smart_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h);
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static void _e_smart_show(Evas_Object *obj);
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static void _e_smart_hide(Evas_Object *obj);
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static void _e_smart_color_set(Evas_Object *obj, int r, int g, int b, int a);
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static void _e_smart_clip_set(Evas_Object *obj, Evas_Object * clip);
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static void _e_smart_clip_unset(Evas_Object *obj);
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static void _e_smart_init(void);
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/* local subsystem globals */
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static Evas_Smart *_e_smart = NULL;
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/* externally accessible functions */
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EAPI Evas_Object *
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e_pan_add(Evas *evas)
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{
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_e_smart_init();
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return evas_object_smart_add(evas, _e_smart);
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}
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EAPI void
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e_pan_child_set(Evas_Object *obj, Evas_Object *child)
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{
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API_ENTRY return;
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if (child == sd->child_obj) return;
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if (sd->child_obj)
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{
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evas_object_clip_unset(sd->child_obj);
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evas_object_smart_member_del(sd->child_obj);
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evas_object_event_callback_del(sd->child_obj, EVAS_CALLBACK_FREE, _e_smart_child_del_hook);
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evas_object_event_callback_del(sd->child_obj, EVAS_CALLBACK_RESIZE, _e_smart_child_resize_hook);
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sd->child_obj = NULL;
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}
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if (child)
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{
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int r, g, b, a;
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sd->child_obj = child;
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evas_object_smart_member_add(sd->child_obj, sd->smart_obj);
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evas_object_geometry_get(sd->child_obj, NULL, NULL,
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&sd->child_w, &sd->child_h);
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evas_object_event_callback_add(child, EVAS_CALLBACK_FREE,
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_e_smart_child_del_hook, sd);
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evas_object_event_callback_add(child, EVAS_CALLBACK_RESIZE,
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_e_smart_child_resize_hook, sd);
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evas_object_color_get(sd->smart_obj, &r, &g, &b, &a);
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evas_object_color_set(sd->child_obj, r, g, b, a);
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evas_object_clip_set(sd->child_obj, evas_object_clip_get(sd->smart_obj));
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if (evas_object_visible_get(sd->smart_obj))
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evas_object_show(sd->child_obj);
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else evas_object_hide(sd->child_obj);
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_e_smart_reconfigure(sd);
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}
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evas_object_smart_callback_call(sd->smart_obj, "changed", NULL);
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}
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EAPI Evas_Object *
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e_pan_child_get(Evas_Object *obj)
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{
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API_ENTRY return NULL;
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return sd->child_obj;
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}
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EAPI void
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e_pan_set(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
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{
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API_ENTRY return;
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if (x > (sd->child_w - sd->w)) x = sd->child_w - sd->w;
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if (y > (sd->child_h - sd->h)) y = sd->child_h - sd->h;
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if (x < 0) x = 0;
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if (y < 0) y = 0;
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if ((x == sd->px) && (y == sd->py)) return;
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sd->px = x;
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sd->py = y;
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_e_smart_reconfigure(sd);
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evas_object_smart_callback_call(sd->smart_obj, "changed", NULL);
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}
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EAPI void
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e_pan_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
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{
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API_ENTRY return;
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if (x) *x = sd->px;
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if (y) *y = sd->py;
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}
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EAPI void
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e_pan_max_get(Evas_Object *obj, Evas_Coord *x, Evas_Coord *y)
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{
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API_ENTRY return;
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if (x)
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{
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if (sd->w < sd->child_w) *x = sd->child_w - sd->w;
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else *x = 0;
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}
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if (y)
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{
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if (sd->h < sd->child_h) *y = sd->child_h - sd->h;
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else *y = 0;
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}
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}
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EAPI void
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e_pan_child_size_get(Evas_Object *obj, Evas_Coord *w, Evas_Coord *h)
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{
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API_ENTRY return;
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if (w) *w = sd->child_w;
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if (h) *h = sd->child_h;
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}
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/* local subsystem functions */
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static void
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_e_smart_child_del_hook(void *data, Evas *e, Evas_Object *obj, void *event_info)
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{
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E_Smart_Data *sd;
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sd = data;
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sd->child_obj = NULL;
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evas_object_smart_callback_call(sd->smart_obj, "changed", NULL);
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}
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static void
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_e_smart_child_resize_hook(void *data, Evas *e, Evas_Object *obj, void *event_info)
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{
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E_Smart_Data *sd;
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Evas_Coord w, h;
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sd = data;
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evas_object_geometry_get(sd->child_obj, NULL, NULL, &w, &h);
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if ((w != sd->child_w) || (h != sd->child_h))
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{
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sd->child_w = w;
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sd->child_h = h;
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_e_smart_reconfigure(sd);
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}
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evas_object_smart_callback_call(sd->smart_obj, "changed", NULL);
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}
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static void
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_e_smart_reconfigure(E_Smart_Data *sd)
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{
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evas_object_move(sd->child_obj, sd->x - sd->px, sd->y - sd->py);
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}
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static void
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_e_smart_add(Evas_Object *obj)
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{
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E_Smart_Data *sd;
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sd = E_NEW(E_Smart_Data, 1);
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if (!sd) return;
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sd->smart_obj = obj;
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sd->x = 0;
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sd->y = 0;
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sd->w = 0;
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sd->h = 0;
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evas_object_smart_data_set(obj, sd);
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}
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static void
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_e_smart_del(Evas_Object *obj)
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{
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INTERNAL_ENTRY;
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e_pan_child_set(obj, NULL);
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E_FREE(sd);
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}
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static void
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_e_smart_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
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{
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INTERNAL_ENTRY;
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sd->x = x;
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sd->y = y;
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_e_smart_reconfigure(sd);
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}
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static void
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_e_smart_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
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{
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INTERNAL_ENTRY;
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sd->w = w;
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sd->h = h;
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_e_smart_reconfigure(sd);
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evas_object_smart_callback_call(sd->smart_obj, "changed", NULL);
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}
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static void
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_e_smart_show(Evas_Object *obj)
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{
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INTERNAL_ENTRY;
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evas_object_show(sd->child_obj);
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}
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static void
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_e_smart_hide(Evas_Object *obj)
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{
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INTERNAL_ENTRY;
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evas_object_hide(sd->child_obj);
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}
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static void
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_e_smart_color_set(Evas_Object *obj, int r, int g, int b, int a)
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{
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INTERNAL_ENTRY;
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evas_object_color_set(sd->child_obj, r, g, b, a);
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}
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static void
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_e_smart_clip_set(Evas_Object *obj, Evas_Object *clip)
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{
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INTERNAL_ENTRY;
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evas_object_clip_set(sd->child_obj, clip);
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}
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static void
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_e_smart_clip_unset(Evas_Object *obj)
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{
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INTERNAL_ENTRY;
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evas_object_clip_unset(sd->child_obj);
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}
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/* never need to touch this */
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static void
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_e_smart_init(void)
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{
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if (_e_smart) return;
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{
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static const Evas_Smart_Class sc =
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{
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SMART_NAME,
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EVAS_SMART_CLASS_VERSION,
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_e_smart_add,
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_e_smart_del,
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_e_smart_move,
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_e_smart_resize,
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_e_smart_show,
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_e_smart_hide,
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_e_smart_color_set,
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_e_smart_clip_set,
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_e_smart_clip_unset,
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NULL,
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NULL,
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NULL,
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NULL
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};
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_e_smart = evas_smart_class_new(&sc);
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}
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}
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