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enlightenment/src/bin/e_widget_cslider.c

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/*
* vim:ts=8:sw=3:sts=8:noexpandtab:cino=>5n-3f0^-2{2
*/
#include "e.h"
typedef struct _E_Widget_Data E_Widget_Data;
struct _E_Widget_Data
{
Evas_Object *o_cslider;
Evas_Object *o_grad;
Evas_Object *o_event;
int vertical;
int fixed;
E_Color_Component mode;
int valnum;
E_Color *color;
int dragging;
};
static void _e_wid_del_hook(Evas_Object *obj);
static void _e_wid_focus_hook(Evas_Object *obj);
static void _e_wid_activate_hook(Evas_Object *obj);
static void _e_wid_disable_hook(Evas_Object *obj);
static void _e_wid_focus_steal(void *data, Evas *e, Evas_Object *obj, void *event_info);
static void _e_wid_value_set(Evas_Object *obj, double vx);
static void _e_wid_update(E_Widget_Data *wd);
static void _e_wid_update_standard(E_Widget_Data *wd);
static void _e_wid_update_fixed(E_Widget_Data *wd);
static void _e_wid_move(void *data, Evas_Object *o, Evas_Coord x, Evas_Coord y);
static void _e_wid_resize(void *data, Evas_Object *o, Evas_Coord w, Evas_Coord h);
static void _e_wid_cb_down(void *data, Evas *e, Evas_Object *obj, void *event_info);
static void _e_wid_cb_move(void *data, Evas *e, Evas_Object *obj, void *event_info);
static void _e_wid_cb_up(void *data, Evas *e, Evas_Object *obj, void *event_info);
Evas_Object *
e_widget_cslider_add(Evas *evas, E_Color_Component mode, E_Color *color, int vertical, int fixed)
{
Evas_Object *obj, *o;
E_Widget_Data *wd;
Evas_Coord mw, mh;
obj = e_widget_add(evas);
e_widget_del_hook_set(obj, _e_wid_del_hook);
e_widget_focus_hook_set(obj, _e_wid_focus_hook);
e_widget_activate_hook_set(obj, _e_wid_activate_hook);
e_widget_disable_hook_set(obj, _e_wid_disable_hook);
wd = calloc(1, sizeof(E_Widget_Data));
e_widget_data_set(obj, wd);
wd->vertical = vertical;
wd->fixed = fixed;
wd->mode = mode;
wd->color = color;
o = edje_object_add(evas);
wd->o_cslider = o;
e_theme_edje_object_set(o, "base/theme/widgets",
"e/widgets/cslider");
if (wd->vertical)
edje_object_signal_emit(o, "e,state,direction,v", "e");
else
edje_object_signal_emit(o, "e,state,direction,h", "e");
evas_object_show(o);
edje_object_size_min_calc(o, &mw, &mh);
e_widget_min_size_set(obj, mw, mh);
e_widget_sub_object_add(obj, o);
evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _e_wid_focus_steal, obj);
e_widget_resize_object_set(obj, o);
// add gradient obj
o = evas_object_gradient_add(evas);
e_widget_sub_object_add(obj, o);
if (wd->vertical)
evas_object_gradient_angle_set(o, 180);
else
evas_object_gradient_angle_set(o, 270);
evas_object_show(o);
e_widget_sub_object_add(obj, o);
wd->o_grad = o;
edje_object_part_swallow(wd->o_cslider, "e.swallow.content", o);
evas_object_intercept_resize_callback_add(o, _e_wid_resize, wd);
evas_object_intercept_move_callback_add(o, _e_wid_move, wd);
_e_wid_update(wd);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 0, 0, 0, 0);
evas_object_show(o);
evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_DOWN, _e_wid_cb_down, obj);
evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_MOVE, _e_wid_cb_move, obj);
evas_object_event_callback_add(o, EVAS_CALLBACK_MOUSE_UP, _e_wid_cb_up, obj);
wd->o_event = o;
return obj;
}
static void
_e_wid_move(void *data, Evas_Object *o, Evas_Coord x, Evas_Coord y)
{
E_Widget_Data *wd = data;
evas_object_move(wd->o_grad, x, y);
evas_object_move(wd->o_event, x, y);
}
static void
_e_wid_resize(void *data, Evas_Object *o, Evas_Coord w, Evas_Coord h)
{
E_Widget_Data *wd = data;
if (wd->vertical)
evas_object_gradient_fill_set(o, 0, 0, w, h);
else
evas_object_gradient_fill_set(o, 0, 0, h, w);
evas_object_resize(o, w, h);
evas_object_resize(wd->o_event, w, h);
}
static void
_e_wid_value_set(Evas_Object *o, double vx)
{
E_Widget_Data *wd;
wd = e_widget_data_get(o);
switch(wd->mode)
{
case E_COLOR_COMPONENT_R:
wd->color->r = 255 * vx;
e_color_update_rgb(wd->color);
break;
case E_COLOR_COMPONENT_G:
wd->color->g = 255 * vx;
e_color_update_rgb(wd->color);
break;
case E_COLOR_COMPONENT_B:
wd->color->b = 255 * vx;
e_color_update_rgb(wd->color);
break;
case E_COLOR_COMPONENT_H:
wd->color->h = 360 * vx;
e_color_update_hsv(wd->color);
break;
case E_COLOR_COMPONENT_S:
wd->color->s = vx;
e_color_update_hsv(wd->color);
break;
case E_COLOR_COMPONENT_V:
wd->color->v = vx;
e_color_update_hsv(wd->color);
break;
case E_COLOR_COMPONENT_MAX:
break;
}
_e_wid_update(wd);
e_widget_change(o);
}
void
e_widget_cslider_color_value_set(Evas_Object *obj, E_Color *val)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
wd->color = val;
_e_wid_update(wd);
}
void
e_widget_cslider_update(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
_e_wid_update(wd);
}
void
e_widget_cslider_mode_set(Evas_Object *obj, E_Color_Component mode)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (wd->mode == mode) return;
wd->mode = mode;
_e_wid_update(wd);
}
static void
_e_wid_update(E_Widget_Data *wd)
{
if (wd->fixed)
_e_wid_update_fixed(wd);
else
_e_wid_update_standard(wd);
}
static void
_e_wid_update_standard(E_Widget_Data *wd)
{
int r, g, b;
int max, min;
float vx;
if (!wd->color) return;
evas_object_gradient_colors_clear(wd->o_grad);
switch(wd->mode)
{
case E_COLOR_COMPONENT_R:
evas_object_gradient_color_add(wd->o_grad, 0, wd->color->g, wd->color->b, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 255, wd->color->g, wd->color->b, 255, 1);
vx = wd->color->r / 255.0;
break;
case E_COLOR_COMPONENT_G:
evas_object_gradient_color_add(wd->o_grad, wd->color->r, 0, wd->color->b, 255, 1);
evas_object_gradient_color_add(wd->o_grad, wd->color->r, 255, wd->color->b, 255, 1);
vx = wd->color->g / 255.0;
break;
case E_COLOR_COMPONENT_B:
evas_object_gradient_color_add(wd->o_grad, wd->color->r, wd->color->g, 0, 255, 1);
evas_object_gradient_color_add(wd->o_grad, wd->color->r, wd->color->g, 255, 255, 1);
vx = wd->color->b / 255.0;
break;
case E_COLOR_COMPONENT_H:
evas_color_hsv_to_rgb(0, wd->color->s, wd->color->v, &max, &min, NULL);
evas_object_gradient_color_add(wd->o_grad, max, min, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, max, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, max, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, max, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, min, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, min, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, min, min, 255, 1);
vx = wd->color->h / 360.0;
break;
case E_COLOR_COMPONENT_S:
evas_color_hsv_to_rgb(wd->color->h, 0, wd->color->v, &r, &g, &b);
evas_object_gradient_color_add(wd->o_grad, r, g, b, 255, 1);
evas_color_hsv_to_rgb(wd->color->h, 1, wd->color->v, &r, &g, &b);
evas_object_gradient_color_add(wd->o_grad, r, g, b, 255, 1);
vx = wd->color->s;
break;
case E_COLOR_COMPONENT_V:
evas_color_hsv_to_rgb(wd->color->h, wd->color->s, 0, &r, &g, &b);
evas_object_gradient_color_add(wd->o_grad, r, g, b, 255, 1);
evas_color_hsv_to_rgb(wd->color->h, wd->color->s, 1, &r, &g, &b);
evas_object_gradient_color_add(wd->o_grad, r, g, b, 255, 1);
vx = wd->color->v;
break;
case E_COLOR_COMPONENT_MAX:
break;
}
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", vx, vx);
}
void
_e_wid_update_fixed(E_Widget_Data *wd)
{
int max, min;
float vx;
if (!wd) return;
evas_object_gradient_colors_clear(wd->o_grad);
switch(wd->mode)
{
case E_COLOR_COMPONENT_R:
evas_object_gradient_color_add(wd->o_grad, 255, 0, 0, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 0, 0, 0, 255, 1);
vx = wd->color->r / 255.0;
break;
case E_COLOR_COMPONENT_G:
evas_object_gradient_color_add(wd->o_grad, 0, 255, 0, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 0, 0, 0, 255, 1);
vx = wd->color->g / 255.0;
break;
case E_COLOR_COMPONENT_B:
evas_object_gradient_color_add(wd->o_grad, 0, 0, 255, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 0, 0, 0, 255, 1);
vx = wd->color->b / 255.0;
break;
case E_COLOR_COMPONENT_H:
/*
* Color Stops:
* 0 x n n
* 60 x x n
* 120 n x n
* 180 n x x
* 240 n n x
* 300 x n x
* 360 x n n
*/
min = 0;
max = 255;
evas_object_gradient_color_add(wd->o_grad, max, min, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, min, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, min, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, max, max, 255, 1);
evas_object_gradient_color_add(wd->o_grad, min, max, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, max, min, 255, 1);
evas_object_gradient_color_add(wd->o_grad, max, min, min, 255, 1);
vx = wd->color->h / 360.0;
break;
case E_COLOR_COMPONENT_S:
evas_object_gradient_color_add(wd->o_grad, 255, 255, 255, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 0, 0, 0, 255, 1);
vx = wd->color->s;
break;
case E_COLOR_COMPONENT_V:
evas_object_gradient_color_add(wd->o_grad, 255, 255, 255, 255, 1);
evas_object_gradient_color_add(wd->o_grad, 0, 0, 0, 255, 1);
vx = wd->color->v;
break;
case E_COLOR_COMPONENT_MAX:
break;
}
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", vx, vx);
}
static void
_e_wid_del_hook(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
free(wd);
}
static void
_e_wid_focus_hook(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (e_widget_focus_get(obj))
{
edje_object_signal_emit(wd->o_cslider, "e,state,focused", "e");
evas_object_focus_set(wd->o_cslider, 1);
}
else
{
edje_object_signal_emit(wd->o_cslider, "e,state,unfocused", "e");
evas_object_focus_set(wd->o_cslider, 0);
}
}
static void
_e_wid_activate_hook(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
}
static void
_e_wid_disable_hook(Evas_Object *obj)
{
E_Widget_Data *wd;
wd = e_widget_data_get(obj);
if (e_widget_disabled_get(obj))
edje_object_signal_emit(wd->o_cslider, "e,state,disabled", "e");
else
edje_object_signal_emit(wd->o_cslider, "e,state,enabled", "e");
}
static void
_e_wid_focus_steal(void *data, Evas *e, Evas_Object *obj, void *event_info)
{
e_widget_focus_steal(data);
}
static void
_e_wid_cb_down(void *data, Evas *e, Evas_Object *obj, void *event_info)
{
Evas_Event_Mouse_Down *ev;
Evas_Object *o_wid;
E_Widget_Data *wd;
Evas_Coord ox, oy, ow, oh;
double val;
ev = event_info;
o_wid = data;
wd = e_widget_data_get(o_wid);
wd->dragging = 1;
evas_object_geometry_get(wd->o_grad, &ox, &oy, &ow, &oh);
if (wd->vertical)
val = 1 - ((ev->canvas.y - oy) / (double)oh);
else
val = (ev->canvas.x - ox) / (double)ow;
if (val > 1) val = 1;
if (val < 0) val = 0;
_e_wid_value_set(o_wid, val);
}
static void
_e_wid_cb_up(void *data, Evas *e, Evas_Object *obj, void *event_info)
{
Evas_Object *o_wid;
E_Widget_Data *wd;
o_wid = data;
wd = e_widget_data_get(o_wid);
wd->dragging = 0;
}
static void
_e_wid_cb_move(void *data, Evas *e, Evas_Object *obj, void *event_info)
{
Evas_Event_Mouse_Move *ev;
Evas_Object *o_wid;
E_Widget_Data *wd;
o_wid = data;
wd = e_widget_data_get(o_wid);
ev = event_info;
if (wd->dragging == 1)
{
Evas_Coord ox, oy, ow, oh;
double val;
evas_object_geometry_get(wd->o_grad, &ox, &oy, &ow, &oh);
if (wd->vertical)
val = 1 - ((ev->cur.canvas.y - oy) / (double)oh);
else
val = (ev->cur.canvas.x - ox) / (double)ow;
if (val > 1) val = 1;
if (val < 0) val = 0;
_e_wid_value_set(o_wid, val);
}
}
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