protected override bool HandleCursorLoop(Keys key)
{
int focusedIdx = ShellBrowser.GetFocusedIndex();
int itemCount = ShellBrowser.GetItemCount();
int selectMe = -1;
int viewMode = ShellBrowser.ViewMode;
if (viewMode == FVM.TILE && QTUtility.IsXP)
{
viewMode = FVM.ICON;
}
switch (viewMode)
{
case FVM.CONTENT:
case FVM.DETAILS:
case FVM.TILE:
if (key == Keys.Up && focusedIdx == 0)
{
selectMe = itemCount - 1;
}
else if (key == Keys.Down && focusedIdx == itemCount - 1)
{
selectMe = 0;
}
break;
case FVM.ICON:
case FVM.SMALLICON:
case FVM.THUMBNAIL:
case FVM.LIST:
Keys KeyNextItem, KeyPrevItem, KeyNextPage, KeyPrevPage;
IntPtr MsgNextPage, MsgPrevPage;
if (viewMode == FVM.LIST)
{
KeyNextItem = Keys.Down;
KeyPrevItem = Keys.Up;
KeyNextPage = Keys.Right;
KeyPrevPage = Keys.Left;
MsgNextPage = (IntPtr)LVNI.TORIGHT;
MsgPrevPage = (IntPtr)LVNI.TOLEFT;
}
else
{
KeyNextItem = Keys.Right;
KeyPrevItem = Keys.Left;
KeyNextPage = Keys.Down;
KeyPrevPage = Keys.Up;
MsgNextPage = (IntPtr)LVNI.BELOW;
MsgPrevPage = (IntPtr)LVNI.ABOVE;
}
int nextPageIdx = (int)PInvoke.SendMessage(Handle, LVM.GETNEXTITEM, (IntPtr)focusedIdx, MsgNextPage);
if (nextPageIdx == -1 || nextPageIdx == focusedIdx)
{
nextPageIdx = (int)PInvoke.SendMessage(Handle, LVM.GETNEXTITEM, (IntPtr)focusedIdx, MsgPrevPage);
}
else if (QTUtility.IsXP)
{
int testIdx = (int)PInvoke.SendMessage(Handle, LVM.GETNEXTITEM, (IntPtr)nextPageIdx, MsgPrevPage);
if (testIdx != focusedIdx)
{
nextPageIdx = (int)PInvoke.SendMessage(Handle, LVM.GETNEXTITEM, (IntPtr)focusedIdx, MsgPrevPage);
}
}
if (nextPageIdx == -1 || nextPageIdx == focusedIdx)
{
if (key == KeyNextItem)
{
if (focusedIdx == itemCount - 1)
{
selectMe = 0;
}
else
{
RECT thisRect = GetItemRect(focusedIdx);
RECT nextRect = GetItemRect(focusedIdx + 1);
if (viewMode == FVM.LIST)
{
if (nextRect.top < thisRect.top)
{
selectMe = 0;
}
}
else if (nextRect.left < thisRect.left)
{
selectMe = 0;
}
}
}
else if (key == KeyPrevItem && focusedIdx == 0)
{
selectMe = itemCount - 1;
}
else if (key == KeyNextPage || key == KeyPrevPage)
{
if (QTUtility.IsXP)
{
return(true);
}
}
}
else
{
int pageCount = Math.Abs(focusedIdx - nextPageIdx);
int page = focusedIdx % pageCount;
if (key == KeyNextItem && (page == pageCount - 1 || focusedIdx == itemCount - 1))
{
selectMe = focusedIdx - page;
}
else if (key == KeyPrevItem && page == 0)
{
selectMe = Math.Min(focusedIdx + pageCount - 1, itemCount - 1);
}
else if (key == KeyNextPage && focusedIdx + pageCount >= itemCount)
{
selectMe = page;
}
else if (key == KeyPrevPage && focusedIdx < pageCount)
{
int x = itemCount - focusedIdx - 1;
selectMe = x - x % pageCount + focusedIdx;
}
}
break;
}
if (selectMe >= 0)
{
SetRedraw(false);
ShellBrowser.SelectItem(selectMe);
PInvoke.SendMessage(Handle, LVM.REDRAWITEMS, (IntPtr)focusedIdx, (IntPtr)focusedIdx);
SetRedraw(true);
return(true);
}
else
{
return(false);
}
}
// 使用箭头键时候环绕选择文件夹
protected override bool HandleCursorLoop(Keys key)
{
int focusedIdx = ShellBrowser.GetFocusedIndex();
int itemCount = ShellBrowser.GetItemCount();
int selectMe = -1;
FVM viewMode = ShellBrowser.ViewMode;
switch (viewMode)
{
case FVM.CONTENT:
case FVM.DETAILS:
if (key == Keys.Up && focusedIdx == 0)
{
selectMe = itemCount - 1;
}
else if (key == Keys.Down && focusedIdx == itemCount - 1)
{
selectMe = 0;
}
break;
case FVM.ICON:
case FVM.SMALLICON:
case FVM.THUMBNAIL:
case FVM.TILE:
case FVM.LIST:
Keys KeyNextItem, KeyPrevItem, KeyNextPage, KeyPrevPage;
if (viewMode == FVM.LIST)
{
KeyNextItem = Keys.Down;
KeyPrevItem = Keys.Up;
KeyNextPage = Keys.Right;
KeyPrevPage = Keys.Left;
}
else
{
KeyNextItem = Keys.Right;
KeyPrevItem = Keys.Left;
KeyNextPage = Keys.Down;
KeyPrevPage = Keys.Up;
}
int pageCount = AutomationManager.DoQuery(factory => {
AutomationElement elem = factory.FromHandle(Handle);
if (elem == null)
{
return(-1);
}
return(viewMode == FVM.LIST ? elem.GetRowCount() : elem.GetColumnCount());
});
if (pageCount == -1)
{
return(false);
}
int page = focusedIdx % pageCount;
if (key == KeyNextItem && (page == pageCount - 1 || focusedIdx == itemCount - 1))
{
selectMe = focusedIdx - page;
}
else if (key == KeyPrevItem && page == 0)
{
selectMe = Math.Min(focusedIdx + pageCount - 1, itemCount - 1);
}
else if (key == KeyNextPage && focusedIdx + pageCount >= itemCount)
{
selectMe = page;
}
else if (key == KeyPrevPage && focusedIdx < pageCount)
{
int x = itemCount - focusedIdx - 1;
selectMe = x - x % pageCount + focusedIdx;
}
break;
}
if (selectMe >= 0)
{
ShellBrowser.SelectItem(selectMe);
return(true);
}
else
{
return(false);
}
}