enlightenment/src/bin/e_widget_cslider.c

642 lines
17 KiB
C

#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;
Evas_Coord x, y, w, h;
int vertical;
int fixed;
E_Color_Component mode;
int valnum;
E_Color *color;
E_Color *prev;
int dragging;
};
static void _e_wid_del_hook(Evas_Object *obj);
static void _e_wid_focus_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 *e, Evas_Object *obj, void *event_info);
static void _e_wid_resize(void *data, Evas *e, Evas_Object *obj, void *event_info);
static void _e_wid_cb_drag_start(void *data, Evas_Object *obj, const char *emission, const char *source);
static void _e_wid_cb_drag_stop(void *data, Evas_Object *obj, const char *emission, const char *source);
static void _e_wid_cb_drag(void *data, Evas_Object *obj, const char *emission, const char *source);
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_disable_hook_set(obj, _e_wid_disable_hook);
wd = calloc(1, sizeof(E_Widget_Data));
e_widget_data_set(obj, wd);
evas_object_event_callback_add(obj, EVAS_CALLBACK_RESIZE, _e_wid_resize, wd);
wd->vertical = vertical;
wd->fixed = fixed;
wd->mode = mode;
wd->color = color;
wd->prev = calloc(1, sizeof (E_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_size_min_set(obj, mw, mh);
evas_object_event_callback_add(o, EVAS_CALLBACK_MOVE, _e_wid_move, wd);
evas_object_event_callback_add(o, EVAS_CALLBACK_RESIZE, _e_wid_resize, wd);
edje_object_signal_callback_add(wd->o_cslider, "drag,start", "*", _e_wid_cb_drag_start, obj);
edje_object_signal_callback_add(wd->o_cslider, "drag", "*", _e_wid_cb_drag, obj);
edje_object_signal_callback_add(wd->o_cslider, "drag,stop", "*", _e_wid_cb_drag_stop, obj);
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_image_filled_add(evas);
e_widget_sub_object_add(obj, 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);
evas_object_color_set(o, 255, 255, 255, 255);
wd->o_grad = o;
edje_object_part_swallow(wd->o_cslider, "e.swallow.content", o);
o = evas_object_rectangle_add(evas);
evas_object_repeat_events_set(o, EINA_TRUE);
e_widget_sub_object_add(obj, o);
evas_object_show(o);
evas_object_color_set(o, 0, 0, 0, 0);
wd->o_event = o;
_e_wid_update(wd);
return obj;
}
static void
_e_wid_move(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
E_Widget_Data *wd;
Evas_Coord x, y;
wd = data;
evas_object_geometry_get(obj, &x, &y, NULL, NULL);
evas_object_move(wd->o_event, x, y);
_e_wid_update(wd);
}
static void
_e_wid_resize(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
E_Widget_Data *wd;
Evas_Coord w, h;
wd = data;
evas_object_geometry_get(obj, NULL, NULL, &w, &h);
evas_object_resize(wd->o_event, w, h);
_e_wid_update(wd);
}
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)
{
Evas_Coord x, y, w, h;
Eina_Bool changed = EINA_FALSE;
evas_object_geometry_get(wd->o_event, &x, &y, &w, &h);
if (x != wd->x || y != wd->y || w != wd->w || h != wd->h)
changed = EINA_TRUE;
if (memcmp(wd->color, wd->prev, sizeof (E_Color)))
changed = EINA_TRUE;
if (changed)
{
if (wd->fixed)
_e_wid_update_fixed(wd);
else
_e_wid_update_standard(wd);
wd->x = x; wd->y = y;
wd->w = w; wd->h = h;
memcpy(wd->prev, wd->color, sizeof (E_Color));
}
}
static void
_e_wid_gradient_set(Evas_Object *o, Eina_Bool orientation,
int rf, int gf, int bf,
int rt, int gt, int bt)
{
unsigned int *pixels, *p;
int x, r, g, b;
if (!orientation)
evas_object_image_size_set(o, 256, 1);
else
evas_object_image_size_set(o, 1, 256);
pixels = evas_object_image_data_get(o, EINA_TRUE);
if (pixels)
{
p = pixels;
for (x = 0; x < 256; x++)
{
r = ((rf * (255 - x)) + (rt * x)) / 255;
g = ((gf * (255 - x)) + (gt * x)) / 255;
b = ((bf * (255 - x)) + (bt * x)) / 255;
*p = 0xff000000 | (r << 16) | (g << 8) | (b);
p++;
}
evas_object_image_data_set(o, pixels);
evas_object_image_data_update_add(o, 0, 0, 256, 256);
}
}
static void
_e_wid_gradient_range_set(Evas_Object *o, Eina_Bool orientation,
int rf, int gf, int bf,
int rt, int gt, int bt,
int from, int to)
{
unsigned int *pixels, *p;
int x, r, g, b, v, t;
if (from < 0) from = 0;
if (from > 255) from = 255;
if (to < 0) to = 0;
if (to > 256) to = 256;
if (to <= from) return;
if (!orientation)
evas_object_image_size_set(o, 256, 1);
else
evas_object_image_size_set(o, 1, 256);
pixels = evas_object_image_data_get(o, EINA_TRUE);
if (pixels)
{
t = to - from;
p = pixels + from;
for (x = from; x < to; x++)
{
v = x - from;
r = ((rf * (t - v)) + (rt * v)) / t;
g = ((gf * (t - v)) + (gt * v)) / t;
b = ((bf * (t - v)) + (bt * v)) / t;
*p = 0xff000000 | (r << 16) | (g << 8) | (b);
p++;
}
evas_object_image_data_set(o, pixels);
evas_object_image_data_update_add(o, 0, 0, 256, 256);
}
}
static void
_e_wid_update_standard(E_Widget_Data *wd)
{
int r, g, b;
int rd, gd, bd;
int max, min;
unsigned int i;
float vx = 0;
int *grad[7][3] = {
{ &max, &min, &min },
{ &max, &max, &min },
{ &min, &max, &min },
{ &min, &max, &max },
{ &min, &min, &max },
{ &max, &min, &max },
{ &max, &min, &min }
};
if (!wd->color) return;
switch (wd->mode)
{
case E_COLOR_COMPONENT_R:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
0, wd->color->g, wd->color->b,
255, wd->color->g, wd->color->b);
vx = wd->color->r / 255.0;
break;
case E_COLOR_COMPONENT_G:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
wd->color->r, 0, wd->color->b,
wd->color->r, 255, wd->color->b);
vx = wd->color->g / 255.0;
break;
case E_COLOR_COMPONENT_B:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
wd->color->r, wd->color->g, 0,
wd->color->r, wd->color->g, 255);
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);
for (i = 0; i < 6; i++)
_e_wid_gradient_range_set(wd->o_grad, wd->vertical,
*grad[i][0], *grad[i][1], *grad[i][2],
*grad[i + 1][0], *grad[i + 1][1], *grad[i + 1][2],
((i + 0) * 256) / 6,
((i + 1) * 256) / 6);
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_color_hsv_to_rgb(wd->color->h, 1, wd->color->v, &rd, &gd, &bd);
_e_wid_gradient_set(wd->o_grad, wd->vertical,
r, g, b,
rd, gd, bd);
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_color_hsv_to_rgb(wd->color->h, wd->color->s, 1, &rd, &gd, &bd);
_e_wid_gradient_set(wd->o_grad, wd->vertical,
r, g, b,
rd, gd, bd);
vx = wd->color->v;
break;
default:
break;
}
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", vx, vx);
edje_object_message_signal_process(wd->o_cslider); /* really needed or go in infinite loop */
}
void
_e_wid_update_fixed(E_Widget_Data *wd)
{
#define GMAX 255
#define GMIN 0
unsigned int i;
float vx = 0;
int grad[7][3] = {
{ GMAX, GMIN, GMIN },
{ GMAX, GMIN, GMAX },
{ GMIN, GMIN, GMAX },
{ GMIN, GMAX, GMAX },
{ GMIN, GMAX, GMIN },
{ GMAX, GMAX, GMIN },
{ GMAX, GMIN, GMIN }
};
if (!wd) return;
switch (wd->mode)
{
case E_COLOR_COMPONENT_R:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
255, 0, 0,
0, 0, 0);
vx = wd->color->r / 255.0;
break;
case E_COLOR_COMPONENT_G:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
0, 255, 0,
0, 0, 0);
vx = wd->color->g / 255.0;
break;
case E_COLOR_COMPONENT_B:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
0, 0, 255,
0, 0, 0);
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
*/
for (i = 0; i < 6; i++)
_e_wid_gradient_range_set(wd->o_grad, wd->vertical,
grad[i][0], grad[i][1], grad[i][2],
grad[i + 1][0], grad[i + 1][1], grad[i + 1][2],
((i + 0) * 256) / 6,
((i + 1) * 256) / 6);
vx = wd->color->h / 360.0;
break;
case E_COLOR_COMPONENT_S:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
255, 255, 255,
0, 0, 0);
vx = wd->color->s;
break;
case E_COLOR_COMPONENT_V:
_e_wid_gradient_set(wd->o_grad, wd->vertical,
255, 255, 255,
0, 0, 0);
vx = wd->color->v;
break;
default:
break;
}
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", vx, vx);
#undef GMAX
#undef GMIN
}
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_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 __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
e_widget_focus_steal(data);
}
static void
_e_wid_cb_drag_start(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
Evas_Object *o_wid;
E_Widget_Data *wd;
double val, valx, valy;
o_wid = data;
wd = e_widget_data_get(o_wid);
wd->dragging = 1;
edje_object_part_drag_value_get(wd->o_cslider, "e.dragable.cursor",
&valx, &valy);
if (wd->vertical) val = valy;
else val = valx;
if (val > 1) val = 1;
if (val < 0) val = 0;
_e_wid_value_set(o_wid, val);
}
static void
_e_wid_cb_drag_stop(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
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_drag(void *data, Evas_Object *obj __UNUSED__, const char *emission __UNUSED__, const char *source __UNUSED__)
{
Evas_Object *o_wid;
E_Widget_Data *wd;
o_wid = data;
wd = e_widget_data_get(o_wid);
if (wd->dragging == 1)
{
double val, valx, valy;
edje_object_part_drag_value_get(wd->o_cslider, "e.dragable.cursor",
&valx, &valy);
if (wd->vertical) val = valy;
else val = valx;
if (val > 1) val = 1;
if (val < 0) val = 0;
_e_wid_value_set(o_wid, val);
}
}
static void
_e_wid_mouse_handle(Evas_Object *obj, int mx, int my)
{
E_Widget_Data *wd;
Evas_Coord x, y, w, h;
double vx = 0.0, vy = 0.0;
wd = e_widget_data_get(obj);
evas_object_geometry_get(wd->o_grad, &x, &y, &w, &h);
if (w > 1) vx = (mx - x) / (double)(w - 1);
if (h > 1) vy = (my - y) / (double)(h - 1);
if (vx > 1) vx = 1;
if (vx < 0) vx = 0;
if (vy > 1) vy = 1;
if (vy < 0) vy = 0;
if (wd->vertical)
{
_e_wid_value_set(obj, 1.0 - vy);
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", 0.5, 1.0 - vy);
}
else
{
_e_wid_value_set(obj, vx);
edje_object_part_drag_value_set(wd->o_cslider, "e.dragable.cursor", vx, 0.5);
}
e_widget_change(obj);
}
static void
_e_wid_cb_down(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info)
{
Evas_Event_Mouse_Down *ev;
Evas_Object *o_wid;
E_Widget_Data *wd;
o_wid = data;
wd = e_widget_data_get(o_wid);
ev = event_info;
wd->dragging = 1;
_e_wid_mouse_handle(o_wid, ev->canvas.x, ev->canvas.y);
}
static void
_e_wid_cb_up(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__, void *event_info __UNUSED__)
{
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 __UNUSED__, Evas_Object *obj __UNUSED__, 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)
{
_e_wid_mouse_handle(o_wid, ev->cur.canvas.x, ev->cur.canvas.y);
}
}