rt_inline rt_uint32_t _rtgui_scrollbar_get_thumb_position(rtgui_scrollbar_t* bar)
{
rt_uint32_t thumb_position;
/* calculate thumb position */
thumb_position = (rtgui_scrollbar_get_value(bar) - bar->min_position) * _rtgui_scrollbar_get_length(bar) /
(bar->max_position - bar->min_position);
return thumb_position;
}
rt_uint32_t get_scrollbar_pos(rtgui_scrollbar_t* bar)
{
double pos,ftmp;
rt_uint32_t result;
/* calculate thumb position */
pos = bar->value;
ftmp = _rtgui_scrollbar_get_length(bar);
pos *= ftmp;
ftmp = bar->count;
pos /= ftmp;
result = pos;
return result;
}
static void _rtgui_scrollbar_on_mouseclick(struct rtgui_widget * widget, struct rtgui_event * event)
{
rtgui_rect_t btn_rect, bar_rect;
rt_uint32_t thumb_size, thumb_position;
struct rtgui_scrollbar* bar = (struct rtgui_scrollbar*)widget;
struct rtgui_event_mouse* mouse = (struct rtgui_event_mouse*)event;
/* get the thumb size and position */
thumb_size = bar->thumb_size * (bar->max_position - bar->min_position) / _rtgui_scrollbar_get_length(bar);
thumb_position = _rtgui_scrollbar_get_thumb_position(bar);
if (bar->orient == RTGUI_VERTICAL)
{
/* get up arrow button rect */
btn_rect.x1 = widget->extent.x1;
btn_rect.x2 = widget->extent.x2;
btn_rect.y1 = widget->extent.y1;
btn_rect.y2 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1);
if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
bar->status |= SBS_UPARROW;
/* line step */
bar->thumb_position -= bar->line_step;
if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position;
}
else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
{
bar->status = 0;
}
goto __exit;
}
/* get bar rect */
bar_rect.x1 = widget->extent.x1;
bar_rect.x2 = widget->extent.x2;
bar_rect.y1 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1);
bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
/* page step */
if (mouse->y < bar_rect.y1 + thumb_position)
{
bar->thumb_position -= bar->page_step;
if (bar->thumb_position < bar->min_position)
bar->thumb_position = bar->min_position;
}
else if (mouse->y > thumb_position + bar->thumb_size)
{
bar->thumb_position += bar->page_step;
if (bar->thumb_position > bar->max_position - thumb_size)
bar->thumb_position = bar->max_position - thumb_size;
}
}
goto __exit;
}
/* get down arrow button rect */
btn_rect.y1 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
btn_rect.y2 = widget->extent.y2;
bar_rect.y1 = widget->extent.y1 + ((widget->extent.y2 - widget->extent.y1)/2);
bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
bar->status |= SBS_DOWNARROW;
/* line step */
bar->thumb_position += bar->line_step;
if (bar->thumb_position > bar->max_position - thumb_size)
bar->thumb_position = bar->max_position - thumb_size;
}
else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
bar->status = 0;
}
}
else
{
/* get left arrow button rect */
btn_rect.x1 = widget->extent.x1;
btn_rect.x2 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1);
btn_rect.y1 = widget->extent.y1;
btn_rect.y2 = widget->extent.y2;
if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
bar->status |= SBS_LEFTARROW;
/* line step */
bar->thumb_position -= bar->line_step;
if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position;
}
else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
bar->status = 0;
goto __exit;
}
/* get bar rect */
bar_rect.x1 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1);
bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
bar_rect.y1 = widget->extent.y1;
bar_rect.y2 = widget->extent.y2;
if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
/* page step */
if (mouse->x < bar_rect.x1 + thumb_position)
{
bar->thumb_position -= bar->page_step;
if (bar->thumb_position < bar->min_position)
bar->thumb_position = bar->min_position;
}
else if (mouse->x > thumb_position + bar->thumb_size)
{
bar->thumb_position += bar->page_step;
if (bar->thumb_position > bar->max_position - thumb_size)
bar->thumb_position = bar->max_position - thumb_size;
}
}
goto __exit;
}
/* get right arrow button rect */
btn_rect.x1 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
btn_rect.x2 = widget->extent.x2;
bar_rect.x1 = widget->extent.x1 + ((widget->extent.x2 - widget->extent.x1)/2);
bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
if (rtgui_rect_contains_point(&btn_rect,
mouse->x, mouse->y) == RT_EOK)
{
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
bar->status |= SBS_RIGHTARROW;
/* line step */
bar->thumb_position += bar->line_step;
if (bar->thumb_position > bar->max_position - bar->line_step)
bar->thumb_position = bar->max_position - bar->line_step;
}
else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
bar->status = 0;
}
}
__exit:
rtgui_theme_draw_scrollbar(bar);
if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
(RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
{
if (bar->on_scroll != RT_NULL) bar->on_scroll(widget, RT_NULL);
}
}
/* thumb chunk activity */
static void _rtgui_scrollbar_on_mousemotion(rtgui_scrollbar_t *bar, rtgui_event_t * event)
{
float tmppos;
rt_uint32_t pos;
struct rtgui_event_mouse *mouse = (struct rtgui_event_mouse*)event;
rt_kprintf("sbar mouse motion.\n");
tmppos = _rtgui_scrollbar_get_length(bar);
tmppos /= bar->count;
pos = (rt_uint32_t)tmppos;
if(bar->orient == RTGUI_VERTICAL)
{
if(bar->status & SBS_VERTTHUMB)
{
/* from then on mouseclick */
if((mouse->y-sbar_mouse_move_size.y) > 3)
{
bar->status |= SBS_DOWNTHUMB;
}
else if((mouse->y-sbar_mouse_move_size.y) < -3)
{
bar->status |= SBS_UPTHUMB;
}
else bar->status &= ~(SBS_UPTHUMB|SBS_DOWNTHUMB);
if(abs(mouse->y-sbar_mouse_move_size.y) >= pos)
{
int step = abs(mouse->y-sbar_mouse_move_size.y)/pos;
sbar_mouse_move_size.y = mouse->y;
if(bar->status & SBS_UPTHUMB)
{
bar->value -= step;
if(bar->value < 0) bar->value = 0;
}
else if(bar->status & SBS_DOWNTHUMB)
{
bar->value += step;
if(bar->value > bar->count) bar->value = bar->count;
}
goto __exit;
}
}
else if(bar->status & SBS_UPARROW)
{
/* on-going push down uparrow button */
if(bar->value==0)return;
bar->value -= bar->line_step;
if(bar->value < 0) bar->value = 0;
goto __exit;
}
else if(bar->status & SBS_DOWNARROW)
{
/* on-going push down downarrow button */
if(bar->value==bar->count)return;
bar->value += bar->line_step;
if(bar->value > bar->count) bar->value = bar->count;
goto __exit;
}
/*else if(bar->status & SBS_UPSPACE)
{
bar->value -= bar->page_step;
if(bar->value < 0) bar->value = 0;
goto __exit;
}
else if(bar->status & SBS_DOWNSPACE)
{
bar->value += bar->page_step;
if(bar->value > bar->count) bar->value = bar->count;
goto __exit;
}*/
return;
}
else
{
if(bar->status & SBS_HORZTHUMB)
{rt_kprintf("HORZTHUMB, move event\n");
if((mouse->x-sbar_mouse_move_size.x) > 5)
{
bar->status |= SBS_RIGHTTHUMB;
}
else if((mouse->x-sbar_mouse_move_size.x) < -5)
{
bar->status |= SBS_LEFTTHUMB;
}
if(abs(mouse->x-sbar_mouse_move_size.x) > pos)
{
int step = abs(mouse->x-sbar_mouse_move_size.x)/pos;
sbar_mouse_move_size.x = mouse->x;
if(bar->status & SBS_LEFTTHUMB)
{
bar->value -= step;
if(bar->value < 0) bar->value = 0;
}
else if(bar->status & SBS_RIGHTTHUMB)
{
bar->value += step;
if(bar->value > bar->count) bar->value = bar->count;
}
goto __exit;
}
}
else if(bar->status & SBS_LEFTARROW)
{
if(bar->value==0)return;
bar->value -= bar->line_step;
if(bar->value < 0) bar->value = 0;
goto __exit;
}
else if(bar->status & SBS_RIGHTARROW)
{
if(bar->value==bar->count)return;
bar->value += bar->line_step;
if(bar->value > bar->count) bar->value = bar->count;
goto __exit;
}
/*else if(bar->status & SBS_LEFTSPACE)
{
bar->value -= bar->page_step;
if(bar->value < bar->min) bar->value = bar->min;
goto __exit;
}
else if(bar->status & SBS_RIGHTSPACE)
{
bar->value += bar->page_step;
if(bar->value > bar->count-1) bar->value = bar->count-1;
goto __exit;
}*/
return;
}
__exit:
rtgui_scrollbar_ondraw(bar);
if(bar->widget_link != RT_NULL && bar->on_scroll != RT_NULL)
{
rtgui_widget_focus(bar->widget_link);
bar->on_scroll(RTGUI_OBJECT(bar->widget_link), event);
}
}