/* 处理鼠标移动事件 */
static void
Window_ExecMove(LCUI_Widget *titlebar, LCUI_WidgetEvent *event)
{
LCUI_Pos pos, offset;
LCUI_Widget *window;
window = titlebar->parent;
if( !window ) {
return;
}
//_DEBUG_MSG( "new:%d,%d, cursor:%d,%d\n",
//event->drag.new_pos.x, event->drag.new_pos.y,
//event->drag.cursor_pos.x, event->drag.cursor_pos.y );
/* 将新全局坐标减去标题栏的全局坐标，得到偏移坐标 */
pos = Widget_GetGlobalPos( titlebar );
offset = Pos_Sub( event->drag.new_pos, pos );
pos = Widget_GetGlobalPos( window );
/* 将偏移坐标加在窗口全局坐标上，得出窗口的新全局坐标 */
pos = Pos_Add( pos, offset );
/* 转换成在容器区域内的相对坐标 */
pos = Widget_ToRelPos( window->parent, pos );
/* 解除之前设定的align */
Widget_SetAlign( window, ALIGN_NONE, Pos(0,0) );
/* 移动窗口的位置 */
Widget_Move( window, pos );
}
static void
_DragEvent_Start( LCUI_Widget *widget, LCUI_MouseButtonEvent *event )
{
LCUI_WidgetEvent buff;
buff.type = EVENT_DRAG;
buff.drag.cursor_pos.x = event->x;
buff.drag.cursor_pos.y = event->y;
buff.drag.new_pos = Widget_GetGlobalPos( widget );
__offset_pos.x = buff.drag.cursor_pos.x - buff.drag.new_pos.x;
__offset_pos.y = buff.drag.cursor_pos.y - buff.drag.new_pos.y;
buff.drag.first_click = TRUE;
buff.drag.end_click = FALSE;
/* 处理部件的拖动事件 */
Widget_DispatchEvent( widget, &buff );
}
/* 移动滑块 */
void move_pic_btn(LCUI_Widget *widget, LCUI_WidgetEvent *event)
{
LCUI_Size size;
LCUI_Rect des, rect;
LCUI_Pos pos, parent;
need_move_pic_btn = FALSE;
parent = Widget_GetGlobalPos(widget->parent);
pos = Pos_Sub(event->drag.new_pos, parent);
Widget_Move(widget, pos);
if(event->drag.end_click) {/* 如果拖动已经结束 */
rect = Widget_GetRect(widget);
size = Widget_GetSize(widget->parent);
des = Rect(size.w-10, 0, 30, 30);/* 目标区域 */
/* 如果部件区域与目标区域重叠，则退出程序 */
if(LCUIRect_Overlay(rect, des)) {
LCUI_MainLoop_Quit(NULL);
} else {/* 否则，让部件回到起始位置，这个使用的是匀速移动 */
need_move_pic_btn = TRUE;
}
}
}
static void
ScrollBar_Drag( LCUI_Widget *widget, LCUI_WidgetEvent *event )
{
static LCUI_Pos pos, offset;
static LCUI_ScrollBar *scrollbar;
if( !widget->parent ) {
return;
}
scrollbar = Widget_GetPrivData( widget->parent );
pos = Widget_GetGlobalPos( widget );
offset = Pos_Sub( event->drag.new_pos, pos );
pos = Pos_Add( pos, offset );
pos = GlobalPos_ConvTo_RelativePos( widget, pos );
Move_ScrollBar( widget, pos );
/* 若函数指针有效，则调用回调函数 */
if( scrollbar->callback_func ) {
//_DEBUG_MSG("current_num: %d, max_num: %d\n",
//scrollbar->data.current_num, scrollbar->data.max_num);
scrollbar->callback_func( scrollbar->data, scrollbar->arg );
}
}