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 );
}
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 );
}
}
static void * Handle_TouchScreen_Input ()
/* 功能：处理触屏输入 */
{
char *tsdevice;
struct ts_sample samp;
int button, x, y, ret;
LCUI_MouseEvent event;
char str[100];
while (LCUI_Active()) {
if (LCUI_Sys.ts.status != INSIDE) {
tsdevice = getenv("TSLIB_TSDEVICE");
if( tsdevice != NULL ) {
LCUI_Sys.ts.td = ts_open(tsdevice, 0);
} else {
tsdevice = TS_DEV;
}
LCUI_Sys.ts.td = ts_open (tsdevice, 0);
if (!LCUI_Sys.ts.td) {
sprintf (str, "ts_open: %s", tsdevice);
perror (str);
LCUI_Sys.ts.status = REMOVE;
break;
}
if (ts_config (LCUI_Sys.ts.td)) {
perror ("ts_config");
LCUI_Sys.ts.status = REMOVE;
break;
}
LCUI_Sys.ts.status = INSIDE;
}
/* 开始获取触屏点击处的坐标 */
ret = ts_read (LCUI_Sys.ts.td, &samp, 1);
if (ret < 0) {
perror ("ts_read");
continue;
}
if (ret != 1) {
continue;
}
x = samp.x;
y = samp.y;
if (x > Get_Screen_Width ()) {
x = Get_Screen_Width ();
}
if (y > Get_Screen_Height ()) {
y = Get_Screen_Height ();
}
if (x < 0) {
x = 0;
}
if (y < 0) {
y = 0;
}
/* 设定游标位置 */
Set_Cursor_Pos (Pos(x, y));
event.global_pos.x = x;
event.global_pos.y = y;
/* 获取当前鼠标指针覆盖到的部件的指针 */
event.widget = Get_Cursor_Overlay_Widget();
/* 如果有覆盖到的部件，就需要计算鼠标指针与部件的相对坐标 */
if(event.widget != NULL) {
event.pos.x = x - Get_Widget_Global_Pos(event.widget).x;
event.pos.y = y - Get_Widget_Global_Pos(event.widget).y;
} else {/* 否则，和全局坐标一样 */
event.pos.x = x;
event.pos.y = y;
}
if (samp.pressure > 0) {
button = 1;
} else {
button = 0;
}
/* 处理鼠标事件 */
Handle_Mouse_Event(button, &event);
//printf("%ld.%06ld: %6d %6d %6d\n", samp.tv.tv_sec, samp.tv.tv_usec, samp.x, samp.y, samp.pressure);
}
if(LCUI_Sys.ts.status == INSIDE) {
ts_close(LCUI_Sys.ts.td);
}
LCUI_Sys.ts.status = REMOVE;
thread_exit (NULL);
}
