311 lines
7.5 KiB
C
311 lines
7.5 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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/*
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* TODO:
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* - add event handlers for scrolling
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* - add functions to set / get values and min / max
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*/
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typedef struct _E_Scrollbar_Smart_Data E_Scrollbar_Smart_Data;
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struct _E_Scrollbar_Smart_Data
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{
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Evas_Object *edje_object;
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struct {
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double min;
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double max;
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double current;
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} value;
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E_Scrollbar_Direction direction;
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Evas_List *callbacks;
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};
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static void _e_scrollbar_smart_add(Evas_Object *object);
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static void _e_scrollbar_smart_del(Evas_Object *object);
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static void _e_scrollbar_smart_move(Evas_Object *object, Evas_Coord x, Evas_Coord y);
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static void _e_scrollbar_smart_resize(Evas_Object *object, Evas_Coord w, Evas_Coord h);
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static void _e_scrollbar_smart_show(Evas_Object *object);
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static void _e_scrollbar_smart_hide(Evas_Object *object);
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static void _e_scrollbar_drag_cb(void *data, Evas_Object *object, const char *emission, const char *source);
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static Evas_Smart *e_scrollbar_smart = NULL;
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Evas_Object *
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e_scrollbar_add(Evas *evas)
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{
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if (!e_scrollbar_smart)
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{
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e_scrollbar_smart = evas_smart_new("e_entry",
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_e_scrollbar_smart_add, /* add */
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_e_scrollbar_smart_del, /* del */
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NULL, NULL, NULL, NULL, NULL,
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_e_scrollbar_smart_move, /* move */
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_e_scrollbar_smart_resize, /* resize */
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_e_scrollbar_smart_show, /* show */
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_e_scrollbar_smart_hide, /* hide */
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NULL, /* color_set */
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NULL, /* clip_set */
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NULL, /* clip_unset */
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NULL); /* data*/
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}
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return evas_object_smart_add(evas, e_scrollbar_smart);
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}
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void
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e_scrollbar_direction_set(Evas_Object *object, E_Scrollbar_Direction dir)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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if (sd->direction == dir)
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return;
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switch (dir)
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{
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case E_SCROLLBAR_HORIZONTAL:
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e_theme_edje_object_set(sd->edje_object,
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"base/theme/widgets/hscrollbar",
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"widgets/hscrollbar");
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sd->direction = dir;
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break;
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case E_SCROLLBAR_VERTICAL:
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e_theme_edje_object_set(sd->edje_object,
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"base/theme/widgets/vscrollbar",
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"widgets/vscrollbar");
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sd->direction = dir;
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break;
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}
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}
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E_Scrollbar_Direction
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e_scrollbar_direction_get(Evas_Object *object)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return E_SCROLLBAR_HORIZONTAL;
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return sd->direction;
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}
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void
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e_scrollbar_callback_drag_add(Evas_Object *object, void (*func)(Evas_Object *obj, double value, void *data), void *data)
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{
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E_Scrollbar_Smart_Data *sd;
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E_Scrollbar_Drag_Handler *handler;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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handler = E_NEW(E_Scrollbar_Drag_Handler, 1);
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handler->data = data;
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handler->cb.drag = func;
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sd->callbacks = evas_list_append(sd->callbacks, handler);
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}
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void
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e_scrollbar_value_set(Evas_Object *object, double value)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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sd->value.current = value;
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if (sd->direction == E_SCROLLBAR_HORIZONTAL)
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edje_object_part_drag_value_set(sd->edje_object, "drag", value, 0);
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else
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edje_object_part_drag_value_set(sd->edje_object, "drag", 0, value);
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}
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double
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e_scrollbar_value_get(Evas_Object *object)
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{
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E_Scrollbar_Smart_Data *sd;
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double dx, dy;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return 0.0;
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edje_object_part_drag_value_get(sd->edje_object, "drag", &dx, &dy);
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if (sd->direction == E_SCROLLBAR_HORIZONTAL)
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sd->value.current = dx;
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else
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sd->value.current = dy;
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return sd->value.current;
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}
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void
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e_scrollbar_increments_set(Evas_Object *object, double step, double page)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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if (sd->direction == E_SCROLLBAR_HORIZONTAL)
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{
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edje_object_part_drag_step_set(sd->edje_object, "drag", step, 0);
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edje_object_part_drag_page_set(sd->edje_object, "drag", page, 0);
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}
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else
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{
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edje_object_part_drag_step_set(sd->edje_object, "drag", 0, step);
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edje_object_part_drag_page_set(sd->edje_object, "drag", 0, page);
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}
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}
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void
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e_scrollbar_increments_get(Evas_Object *object, double *step, double *page)
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{
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E_Scrollbar_Smart_Data *sd;
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double stepx; double stepy;
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double pagex; double pagey;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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edje_object_part_drag_step_get(sd->edje_object, "drag", &stepx, &stepy);
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edje_object_part_drag_page_get(sd->edje_object, "drag", &pagex, &pagey);
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if (sd->direction == E_SCROLLBAR_HORIZONTAL)
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{
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if (step) *step = stepx;
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if (page) *page = pagex;
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}
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else
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{
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if (step) *step = stepy;
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if (page) *page = pagey;
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}
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}
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/**************************
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* Private functions
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**************************/
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static void
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_e_scrollbar_smart_add(Evas_Object *object)
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{
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Evas *evas;
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(evas = evas_object_evas_get(object)))
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return;
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sd = calloc(1, sizeof(E_Scrollbar_Smart_Data));
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if (!sd) return;
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sd->value.min = 0.0;
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sd->value.max = 1.0;
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sd->callbacks = NULL;
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sd->direction = E_SCROLLBAR_HORIZONTAL;
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sd->edje_object = edje_object_add(evas);
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e_theme_edje_object_set(sd->edje_object,
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"base/theme/widgets/hscrollbar",
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"widgets/hscrollbar");
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edje_object_signal_callback_add(sd->edje_object, "drag", "*", _e_scrollbar_drag_cb, sd);
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evas_object_data_set(sd->edje_object, "smart", object);
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evas_object_smart_member_add(sd->edje_object, object);
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evas_object_smart_data_set(object, sd);
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}
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static void
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_e_scrollbar_smart_del(Evas_Object *object)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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evas_object_del(sd->edje_object);
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free(sd);
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}
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/* Called when the object is moved */
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static void
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_e_scrollbar_smart_move(Evas_Object *object, Evas_Coord x, Evas_Coord y)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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evas_object_move(sd->edje_object, x, y);
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}
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/* Called when the object is resized */
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static void
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_e_scrollbar_smart_resize(Evas_Object *object, Evas_Coord w, Evas_Coord h)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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evas_object_resize(sd->edje_object, w, h);
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}
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static void
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_e_scrollbar_smart_show(Evas_Object *object)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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evas_object_show(sd->edje_object);
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}
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static void
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_e_scrollbar_smart_hide(Evas_Object *object)
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{
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E_Scrollbar_Smart_Data *sd;
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if ((!object) || !(sd = evas_object_smart_data_get(object)))
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return;
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evas_object_hide(sd->edje_object);
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}
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static void
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_e_scrollbar_drag_cb(void *data, Evas_Object *object, const char *emission, const char *source)
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{
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E_Scrollbar_Smart_Data *sd;
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Evas_Object *smart_object;
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Evas_List *l;
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if ((!object) || !(smart_object = evas_object_data_get(object, "smart")))
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return;
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sd = evas_object_smart_data_get(smart_object);
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if (!sd)
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return;
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sd->value.current = e_scrollbar_value_get(smart_object);
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for (l = sd->callbacks; l; l = l->next)
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{
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E_Scrollbar_Drag_Handler *handler;
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handler = l->data;
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handler->cb.drag(smart_object, sd->value.current, handler->data);
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}
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}
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