267 lines
6.2 KiB
C
267 lines
6.2 KiB
C
/*
|
|
* File : slider.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rt-thread.org/license/LICENSE
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2009-10-16 Bernard first version
|
|
* 2010-09-10 Bernard fix hide issue
|
|
*/
|
|
#include <rtgui/dc.h>
|
|
#include <rtgui/rtgui_theme.h>
|
|
#include <rtgui/widgets/slider.h>
|
|
|
|
#define RTGUI_SLIDER_DEFAULT_WIDTH 100
|
|
#define RTGUI_SLIDER_DEFAULT_HEIGHT 20
|
|
#define RTGUI_SLIDER_DEFAULT_MIN 0
|
|
#define RTGUI_SLIDER_DEFAULT_MAX 100
|
|
|
|
static void _rtgui_slider_constructor(rtgui_slider_t *slider)
|
|
{
|
|
rtgui_rect_t rect = {0, 0, RTGUI_SLIDER_DEFAULT_WIDTH, RTGUI_SLIDER_DEFAULT_HEIGHT};
|
|
|
|
/* init widget and set event handler */
|
|
RTGUI_WIDGET(slider)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
|
|
rtgui_widget_set_rect(RTGUI_WIDGET(slider), &rect);
|
|
rtgui_object_set_event_handler(RTGUI_OBJECT(slider), rtgui_slider_event_handler);
|
|
|
|
/* set proper of control */
|
|
slider->min = RTGUI_SLIDER_DEFAULT_MIN;
|
|
slider->max = RTGUI_SLIDER_DEFAULT_MAX;
|
|
slider->value = RTGUI_SLIDER_DEFAULT_MIN;
|
|
slider->orient = RTGUI_HORIZONTAL;
|
|
|
|
slider->ticks = 10;
|
|
slider->thumb_width = 8;
|
|
slider->on_changed = RT_NULL;
|
|
}
|
|
|
|
DEFINE_CLASS_TYPE(slider, "slider",
|
|
RTGUI_WIDGET_TYPE,
|
|
_rtgui_slider_constructor,
|
|
RT_NULL,
|
|
sizeof(struct rtgui_slider));
|
|
|
|
static void rtgui_slider_onmouse(struct rtgui_slider* slider, struct rtgui_event_mouse* event)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
RT_ASSERT(event != RT_NULL);
|
|
|
|
if (event->button & RTGUI_MOUSE_BUTTON_DOWN &&
|
|
event->button & RTGUI_MOUSE_BUTTON_LEFT)
|
|
{
|
|
int sel;
|
|
int range = slider->max - slider->min;
|
|
int x0, xsize;
|
|
int x;
|
|
x0 = 1 + slider->thumb_width/2;
|
|
|
|
if (slider->orient == RTGUI_VERTICAL)
|
|
{
|
|
x = event->y - RTGUI_WIDGET(slider)->extent.y1;
|
|
x -= x0;
|
|
xsize = rtgui_rect_height(RTGUI_WIDGET(slider)->extent) - 2 * x0;
|
|
}
|
|
else
|
|
{
|
|
x = event->x - RTGUI_WIDGET(slider)->extent.x1;
|
|
x -= x0;
|
|
xsize = rtgui_rect_width(RTGUI_WIDGET(slider)->extent) - 2 * x0;
|
|
}
|
|
|
|
if (x <= 0)
|
|
{
|
|
sel = slider->min;
|
|
}
|
|
else if (x >= xsize)
|
|
{
|
|
sel = slider->max;
|
|
}
|
|
else
|
|
{
|
|
sel = ((range * x) + xsize/2) / xsize;
|
|
sel += slider->min;
|
|
}
|
|
|
|
rtgui_widget_focus(RTGUI_WIDGET(slider));
|
|
rtgui_slider_set_value(slider, sel);
|
|
if (slider->on_changed != RT_NULL) /* invoke callback function */
|
|
slider->on_changed(RTGUI_WIDGET(slider), RT_NULL);
|
|
}
|
|
}
|
|
|
|
static rt_bool_t rtgui_slider_onkey(struct rtgui_slider* slider, struct rtgui_event_kbd *event)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
RT_ASSERT(event != RT_NULL);
|
|
|
|
if (!(RTGUI_KBD_IS_UP(event)))
|
|
return RT_TRUE;
|
|
|
|
if (slider->orient == RTGUI_HORIZONTAL)
|
|
{
|
|
if (event->key == RTGUIK_RIGHT)
|
|
{
|
|
if (slider->value > slider->min)
|
|
slider->value++;
|
|
}
|
|
else if (event->key == RTGUIK_LEFT)
|
|
{
|
|
if (slider->value < slider->max)
|
|
slider->value--;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (event->key == RTGUIK_UP)
|
|
{
|
|
if (slider->value > slider->min)
|
|
slider->value--;
|
|
}
|
|
else if (event->key == RTGUIK_DOWN)
|
|
{
|
|
if (slider->value < slider->max)
|
|
slider->value++;
|
|
}
|
|
}
|
|
|
|
/* update widget */
|
|
rtgui_widget_update(RTGUI_WIDGET(slider));
|
|
if (slider->on_changed != RT_NULL) /* invoke callback function */
|
|
slider->on_changed(RTGUI_WIDGET(slider), RT_NULL);
|
|
|
|
return RT_TRUE;
|
|
}
|
|
|
|
rt_bool_t rtgui_slider_event_handler(struct rtgui_object *object, struct rtgui_event *event)
|
|
{
|
|
struct rtgui_widget *widget;
|
|
struct rtgui_slider* slider;
|
|
|
|
RT_ASSERT(object != RT_NULL);
|
|
RT_ASSERT(event != RT_NULL);
|
|
|
|
widget = RTGUI_WIDGET(object);
|
|
slider = RTGUI_SLIDER(object);
|
|
|
|
switch (event->type)
|
|
{
|
|
case RTGUI_EVENT_PAINT:
|
|
#ifndef RTGUI_USING_SMALL_SIZE
|
|
if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
|
|
else
|
|
#endif
|
|
{
|
|
rtgui_theme_draw_slider(slider);
|
|
}
|
|
|
|
break;
|
|
|
|
case RTGUI_EVENT_KBD:
|
|
if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
|
|
|
|
#ifndef RTGUI_USING_SMALL_SIZE
|
|
if (widget->on_key != RT_NULL) widget->on_key(widget, event);
|
|
else
|
|
#endif
|
|
{
|
|
return rtgui_slider_onkey(slider, (struct rtgui_event_kbd *)event);
|
|
}
|
|
break;
|
|
|
|
case RTGUI_EVENT_MOUSE_BUTTON:
|
|
if (!RTGUI_WIDGET_IS_ENABLE(widget) || RTGUI_WIDGET_IS_HIDE(widget)) return RT_FALSE;
|
|
|
|
#ifndef RTGUI_USING_SMALL_SIZE
|
|
if (widget->on_mouseclick != RT_NULL) widget->on_mouseclick(widget, event);
|
|
else
|
|
#endif
|
|
{
|
|
rtgui_slider_onmouse(slider, (struct rtgui_event_mouse*)event);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return RT_FALSE;
|
|
}
|
|
|
|
struct rtgui_slider* rtgui_slider_create(rt_size_t min, rt_size_t max, int orient)
|
|
{
|
|
struct rtgui_slider* slider;
|
|
|
|
slider = (struct rtgui_slider*) rtgui_widget_create (RTGUI_SLIDER_TYPE);
|
|
if (slider != RT_NULL)
|
|
{
|
|
/* set proper of control */
|
|
slider->min = min;
|
|
slider->max = max;
|
|
slider->value = min;
|
|
|
|
slider->ticks = 10;
|
|
slider->thumb_width = 8;
|
|
|
|
rtgui_slider_set_orientation(slider, orient);
|
|
}
|
|
|
|
return slider;
|
|
}
|
|
|
|
void rtgui_slider_set_range(struct rtgui_slider* slider, rt_size_t min, rt_size_t max)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
|
|
slider->max = max;
|
|
slider->min = min;
|
|
}
|
|
|
|
void rtgui_slider_set_value(struct rtgui_slider* slider, rt_size_t value)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
|
|
if (RTGUI_WIDGET_IS_ENABLE(RTGUI_WIDGET(slider)))
|
|
{
|
|
if (value < slider->min) value = slider->min;
|
|
if (value > slider->max) value = slider->max;
|
|
|
|
if (slider->value != value)
|
|
{
|
|
slider->value = value;
|
|
rtgui_theme_draw_slider(slider);
|
|
}
|
|
}
|
|
}
|
|
|
|
void rtgui_slider_set_orientation(struct rtgui_slider* slider, int orientation)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
|
|
/* set orientation */
|
|
slider->orient = orientation;
|
|
#ifndef RTGUI_USING_SMALL_SIZE
|
|
if (slider->orient == RTGUI_HORIZONTAL)
|
|
{
|
|
/* HORIZONTAL */
|
|
rtgui_widget_set_miniheight(RTGUI_WIDGET(slider), RTGUI_SLIDER_DEFAULT_HEIGHT);
|
|
rtgui_widget_set_miniwidth(RTGUI_WIDGET(slider), RTGUI_SLIDER_DEFAULT_WIDTH);
|
|
}
|
|
else
|
|
{
|
|
/* VERTICAL */
|
|
rtgui_widget_set_miniwidth(RTGUI_WIDGET(slider), RTGUI_SLIDER_DEFAULT_HEIGHT);
|
|
rtgui_widget_set_miniheight(RTGUI_WIDGET(slider), RTGUI_SLIDER_DEFAULT_WIDTH);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
rt_size_t rtgui_slider_get_value(struct rtgui_slider* slider)
|
|
{
|
|
RT_ASSERT(slider != RT_NULL);
|
|
|
|
return slider->value;
|
|
}
|