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Implemented IsVisible and GetFirst/NextVisibleItem for generic tree control

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8126 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2000-08-18 12:45:21 +00:00
parent f409b413be
commit 1ed01484e7
7 changed files with 171 additions and 83 deletions
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107
contrib/src/gizmos/splittree.cpp
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@@ -55,7 +55,6 @@ BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
#endif
EVT_SIZE(wxRemotelyScrolledTreeCtrl::OnSize)
EVT_PAINT(wxRemotelyScrolledTreeCtrl::OnPaint)
EVT_TREE_ITEM_EXPANDED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
EVT_TREE_ITEM_COLLAPSED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
EVT_SCROLLWIN(wxRemotelyScrolledTreeCtrl::OnScroll)
@@ -195,49 +194,44 @@ void wxRemotelyScrolledTreeCtrl::OnExpand(wxTreeEvent& event)
// Adjust the containing wxScrolledWindow's scrollbars appropriately
void wxRemotelyScrolledTreeCtrl::AdjustRemoteScrollbars()
{
// WILL THIS BE DONE AUTOMATICALLY BY THE GENERIC TREE CONTROL?
/*
Problem with remote-scrolling the generic tree control. It relies
on PrepareDC for adjusting the device origin, which in turn takes
values from wxScrolledWindow: which we've turned off in order to use
a different scrollbar :-( So we could override PrepareDC and use
the _other_ scrolled window's position instead.
Note also ViewStart would need to be overridden.
Plus, wxGenericTreeCtrl::OnPaint will reset the device origin.
*/
// Assumption: wxGenericTreeCtrl will adjust the scrollbars automatically,
// since it'll call SetScrollbars and we've defined this to Do The Right Thing.
if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
return;
wxScrolledWindow* scrolledWindow = GetScrolledWindow();
if (scrolledWindow)
{
wxRect itemRect;
if (GetBoundingRect(GetRootItem(), itemRect))
// This is for the generic tree control.
// It calls SetScrollbars which has been overridden
// to adjust the parent scrolled window vertical
// scrollbar.
((wxGenericTreeCtrl*) this)->AdjustMyScrollbars();
return;
}
else
{
// This is for the wxMSW tree control
wxScrolledWindow* scrolledWindow = GetScrolledWindow();
if (scrolledWindow)
{
int itemHeight = itemRect.GetHeight();
int w, h;
GetClientSize(&w, &h);
wxRect rect(0, 0, 0, 0);
CalcTreeSize(rect);
int treeViewHeight = rect.GetHeight()/itemHeight;
int scrollPixelsPerLine = itemHeight;
int scrollPos = - (itemRect.y / itemHeight);
scrolledWindow->SetScrollbars(0, scrollPixelsPerLine, 0, treeViewHeight, 0, scrollPos);
// Ensure that when a scrollbar becomes hidden or visible,
// the contained window sizes are right.
// Problem: this is called too early (?)
wxSizeEvent event(scrolledWindow->GetSize(), scrolledWindow->GetId());
scrolledWindow->GetEventHandler()->ProcessEvent(event);
wxRect itemRect;
if (GetBoundingRect(GetRootItem(), itemRect))
{
int itemHeight = itemRect.GetHeight();
int w, h;
GetClientSize(&w, &h);
wxRect rect(0, 0, 0, 0);
CalcTreeSize(rect);
int treeViewHeight = rect.GetHeight()/itemHeight;
int scrollPixelsPerLine = itemHeight;
int scrollPos = - (itemRect.y / itemHeight);
scrolledWindow->SetScrollbars(0, scrollPixelsPerLine, 0, treeViewHeight, 0, scrollPos);
// Ensure that when a scrollbar becomes hidden or visible,
// the contained window sizes are right.
// Problem: this is called too early (?)
wxSizeEvent event(scrolledWindow->GetSize(), scrolledWindow->GetId());
scrolledWindow->GetEventHandler()->ProcessEvent(event);
}
}
}
}
@@ -307,37 +301,6 @@ wxScrolledWindow* wxRemotelyScrolledTreeCtrl::GetScrolledWindow() const
return NULL;
}
void wxRemotelyScrolledTreeCtrl::OnPaint(wxPaintEvent& event)
{
wxPaintDC dc(this);
wxTreeCtrl::OnPaint(event);
// Reset the device origin since it may have been set
dc.SetDeviceOrigin(0, 0);
wxSize sz = GetClientSize();
wxPen pen(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT), 1, wxSOLID);
dc.SetPen(pen);
dc.SetBrush(* wxTRANSPARENT_BRUSH);
wxRect itemRect;
if (GetBoundingRect(GetRootItem(), itemRect))
{
int itemHeight = itemRect.GetHeight();
wxRect rcClient = GetRect();
int cy=0;
wxTreeItemId h;
for(h=GetFirstVisibleItem();h;h=GetNextVisible(h))
{
dc.DrawLine(rcClient.x, cy, rcClient.x + rcClient.width, cy);
cy += itemHeight;
}
dc.DrawLine(rcClient.x, cy, rcClient.x + rcClient.width, cy);
}
}
void wxRemotelyScrolledTreeCtrl::OnScroll(wxScrollWinEvent& event)
{
int orient = event.GetOrientation();