static void
_Start_DragEvent( LCUI_Widget *widget, LCUI_MouseEvent *event )
{
drag_event.cursor_pos = event->global_pos;
/* 用全局坐标减去部件的全局坐标，得到偏移坐标 */
__offset_pos = Pos_Sub( event->global_pos, Get_Widget_Global_Pos( widget ) );
/* 得出部件的新全局坐标 */
drag_event.new_pos = Pos_Sub( event->global_pos, __offset_pos );
drag_event.first_click = 1;
drag_event.end_click = 0;
/* 处理部件的拖动事件 */
Handle_Event( &widget->event, EVENT_DRAG );
}
/* 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
_End_DragEvent( LCUI_Widget *widget, LCUI_MouseEvent *event )
{
drag_event.cursor_pos = event->global_pos;
drag_event.new_pos = Pos_Sub( event->global_pos, __offset_pos );
drag_event.first_click = 0;
drag_event.end_click = 1;
Handle_Event( &widget->event, EVENT_DRAG );
}
static void Move_Window(LCUI_Widget *titlebar, LCUI_DragEvent *event)
/* 功能：处理鼠标移动事件 */
{
LCUI_Pos pos;
LCUI_Widget *window;
if(event->first_click == 0 ) {
window = titlebar->parent;
pos = event->new_pos;
if(window != NULL) {
/* 减去在窗口中的相对坐标, 得出窗口位置 */
pos = Pos_Sub(pos, Get_Widget_Pos(titlebar));
if(window->parent != NULL) {
pos = Pos_Sub(pos, Get_Widget_Global_Pos(window->parent));
}
/* 移动窗口的位置 */
Move_Widget(window, pos);
}
}
}
static void
ScrollBar_Drag( LCUI_Widget *widget, LCUI_DragEvent *event )
{
static LCUI_Pos pos, offset;
static LCUI_ScrollBar *scrollbar;
if( !widget->parent ) {
return;
}
scrollbar = Get_Widget_PrivData( widget->parent );
pos = Get_Widget_Global_Pos( widget );
offset = Pos_Sub( event->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 ) {
scrollbar->callback_func( scrollbar->data, scrollbar->arg );
}
}
/* 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 );
}
}
TextLayer_Cursor_SetPixelPos( LCUI_TextLayer *layer, LCUI_Pos pixel_pos )
/*
* 功能：根据传入的二维坐标，设定光标在的文本图层中的位置
* 说明：该位置会根据当前位置中的字体位图来调整，确保光标显示在字体位图边上，而不
* 会遮挡字体位图；光标在文本图层中的位置改变后，在字符串中的位置也要做相应改变，
* 因为文本的添加，删减，都需要以光标当前所在位置对应的字符为基础。
* 返回值：文本图层中对应字体位图的坐标，单位为像素
* */
{
LCUI_Pos new_pos, pos;
Text_RowData *row_ptr;
LCUI_CharData *char_ptr;
int i, n, rows, cols, tmp;
pos.x = pos.y = 0;
rows = Queue_GetTotal( &layer->rows_data );
/* 减去偏移坐标 */
pixel_pos = Pos_Sub( pixel_pos, layer->offset_pos );
for( new_pos.y=0,i=0; i<rows; ++i ) {
row_ptr = Queue_Get( &layer->rows_data, i );
if( pixel_pos.y >= row_ptr->max_size.h ) {
pixel_pos.y -= row_ptr->max_size.h;
if(i < rows-1 ) {
new_pos.y += row_ptr->max_size.h;
continue;
}
}
break;
}
pos.y = i;
row_ptr = Queue_Get( &layer->rows_data, i );
if( !row_ptr ) {
cols = 0;
} else {
cols = Queue_GetTotal( &row_ptr->string );
}
for( new_pos.x=0,n=0; n<cols; ++n ) {
char_ptr = Queue_Get( &row_ptr->string, n );
if( !char_ptr ) {
continue;
}
tmp = char_ptr->bitmap->advance.x;
if( pixel_pos.x >= tmp/2 ) {
pixel_pos.x -= tmp;
new_pos.x += tmp;
if(n < cols-1 || (n == cols-1 && pixel_pos.x >= 0)) {
continue;
}
}
break;
}
pos.x = n;
/* 判断光标位置变化，以快速确定当前字符在源文本中的位置并更新 */
if( layer->current_des_pos.y > pos.y
|| (layer->current_des_pos.y == pos.y
&& layer->current_des_pos.x > pos.x)) {
layer->current_des_pos = pos;
/* 优先向左边遍历 */
TextLayer_Update_CurSrcPos( layer, 0 );
}
else if( layer->current_des_pos.y == pos.y
&& layer->current_des_pos.x == pos.x );
else {
layer->current_des_pos = pos;
/* 优先向右边遍历 */
TextLayer_Update_CurSrcPos( layer, 1 );
}
/* 加上偏移坐标 */
new_pos = Pos_Add( new_pos, layer->offset_pos );
return new_pos;
}
