+/////////////////////////////////////////////////////////////////////////////
+// Name: splittree.cpp
+// Purpose: Classes to achieve a remotely-scrolled tree in a splitter
+// window that can be scrolled by a scrolled window higher in the
+// hierarchy
+// Author: Julian Smart
+// Modified by:
+// Created: 8/7/2000
+// RCS-ID: $Id$
+// Copyright: (c) Julian Smart
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+#ifdef __GNUG__
+ #pragma implementation "splittree.h"
+#endif
+
+// For compilers that support precompilation, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+// for all others, include the necessary headers (this file is usually all you
+// need because it includes almost all "standard" wxWindows headers)
+#ifndef WX_PRECOMP
+ #include "wx/wx.h"
+#endif
+
+#include "wx/generic/treectlg.h"
+
+#include "splittree.h"
+
+/*
+ * wxRemotelyScrolledTreeCtrl
+ */
+
+#if USE_GENERIC_TREECTRL
+IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
+#else
+IMPLEMENT_CLASS(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
+#endif
+
+#if USE_GENERIC_TREECTRL
+BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxGenericTreeCtrl)
+#else
+BEGIN_EVENT_TABLE(wxRemotelyScrolledTreeCtrl, wxTreeCtrl)
+#endif
+ EVT_SIZE(wxRemotelyScrolledTreeCtrl::OnSize)
+ EVT_TREE_ITEM_EXPANDED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
+ EVT_TREE_ITEM_COLLAPSED(-1, wxRemotelyScrolledTreeCtrl::OnExpand)
+ EVT_SCROLLWIN(wxRemotelyScrolledTreeCtrl::OnScroll)
+END_EVENT_TABLE()
+
+wxRemotelyScrolledTreeCtrl::wxRemotelyScrolledTreeCtrl(wxWindow* parent, wxWindowID id, const wxPoint& pt,
+ const wxSize& sz, long style):
+ wxTreeCtrl(parent, id, pt, sz, style)
+{
+ m_companionWindow = NULL;
+}
+
+wxRemotelyScrolledTreeCtrl::~wxRemotelyScrolledTreeCtrl()
+{
+}
+
+void wxRemotelyScrolledTreeCtrl::HideVScrollbar()
+{
+#ifdef __WXMSW__
+ if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ ::ShowScrollBar((HWND) GetHWND(), SB_VERT, FALSE);
+ }
+ else
+#endif
+ {
+ // Implicit in overriding SetScrollbars
+ }
+}
+
+// Number of pixels per user unit (0 or -1 for no scrollbar)
+// Length of virtual canvas in user units
+// Length of page in user units
+void wxRemotelyScrolledTreeCtrl::SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
+ int noUnitsX, int noUnitsY,
+ int xPos, int yPos,
+ bool noRefresh)
+{
+ if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
+ win->wxGenericTreeCtrl::SetScrollbars(pixelsPerUnitX, 0, noUnitsX, 0, xPos, 0, noRefresh);
+
+ wxScrolledWindow* scrolledWindow = GetScrolledWindow();
+ if (scrolledWindow)
+ {
+ scrolledWindow->SetScrollbars(0, pixelsPerUnitY, 0, noUnitsY, 0, yPos, noRefresh);
+ }
+ }
+}
+
+// In case we're using the generic tree control.
+int wxRemotelyScrolledTreeCtrl::GetScrollPos(int orient) const
+{
+ wxScrolledWindow* scrolledWindow = GetScrolledWindow();
+
+ if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
+
+ if (orient == wxHORIZONTAL)
+ return win->wxGenericTreeCtrl::GetScrollPos(orient);
+ else
+ {
+ return scrolledWindow->GetScrollPos(orient);
+ }
+ }
+ return 0;
+}
+
+
+// In case we're using the generic tree control.
+// Get the view start
+void wxRemotelyScrolledTreeCtrl::GetViewStart(int *x, int *y) const
+{
+ wxScrolledWindow* scrolledWindow = GetScrolledWindow();
+
+ if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+
+ wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
+ int x1, y1, x2, y2;
+ win->wxGenericTreeCtrl::GetViewStart(& x1, & y1);
+ * x = x1; * y = y1;
+ if (!scrolledWindow)
+ return;
+
+ scrolledWindow->GetViewStart(& x2, & y2);
+ * y = y2;
+ }
+ else
+ {
+ // x is wrong since the horizontal scrollbar is controlled by the
+ // tree control, but we probably don't need it.
+ scrolledWindow->GetViewStart(x, y);
+ }
+}
+
+// In case we're using the generic tree control.
+void wxRemotelyScrolledTreeCtrl::PrepareDC(wxDC& dc)
+{
+ if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ wxScrolledWindow* scrolledWindow = GetScrolledWindow();
+
+ wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
+
+ int startX, startY;
+ GetViewStart(& startX, & startY);
+
+ int xppu1, yppu1, xppu2, yppu2;
+ win->wxGenericTreeCtrl::GetScrollPixelsPerUnit(& xppu1, & yppu1);
+ scrolledWindow->GetScrollPixelsPerUnit(& xppu2, & yppu2);
+
+ dc.SetDeviceOrigin( -startX * xppu1, -startY * yppu2 );
+ dc.SetUserScale( win->GetScaleX(), win->GetScaleY() );
+ }
+}
+
+// Scroll to the given line (in scroll units where each unit is
+// the height of an item)
+void wxRemotelyScrolledTreeCtrl::ScrollToLine(int posHoriz, int posVert)
+{
+#ifdef __WXMSW__
+ if (!IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ UINT sbCode = SB_THUMBPOSITION;
+ HWND vertScrollBar = 0;
+ MSWDefWindowProc((WXUINT) WM_VSCROLL, MAKELONG(sbCode, posVert), (WXHWND) vertScrollBar);
+ }
+ else
+#endif
+ {
+ wxGenericTreeCtrl* win = (wxGenericTreeCtrl*) this;
+ win->Refresh();
+ /* Doesn't work yet because scrolling is ignored by Scroll
+ int xppu, yppu;
+ wxScrolledWindow* scrolledWindow = GetScrolledWindow();
+ if (scrolledWindow)
+ {
+ scrolledWindow->GetScrollPixelsPerUnit(& xppu, & yppu);
+ win->Scroll(-1, posVert*yppu);
+ }
+ */
+ }
+}
+
+void wxRemotelyScrolledTreeCtrl::OnSize(wxSizeEvent& event)
+{
+ HideVScrollbar();
+ AdjustRemoteScrollbars();
+ event.Skip();
+}
+
+void wxRemotelyScrolledTreeCtrl::OnExpand(wxTreeEvent& event)
+{
+ AdjustRemoteScrollbars();
+ event.Skip();
+
+ // If we don't have this, we get some bits of lines still remaining
+ if (event.GetEventType() == wxEVT_COMMAND_TREE_ITEM_COLLAPSED)
+ Refresh();
+
+ // Pass on the event
+ if (m_companionWindow)
+ m_companionWindow->GetEventHandler()->ProcessEvent(event);
+}
+
+// Adjust the containing wxScrolledWindow's scrollbars appropriately
+void wxRemotelyScrolledTreeCtrl::AdjustRemoteScrollbars()
+{
+ if (IsKindOf(CLASSINFO(wxGenericTreeCtrl)))
+ {
+ // 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)
+ {
+ 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);
+ }
+ }
+ }
+}
+
+
+// Calculate the area that contains both rectangles
+static wxRect CombineRectangles(const wxRect& rect1, const wxRect& rect2)
+{
+ wxRect rect;
+
+ int right1 = rect1.GetRight();
+ int bottom1 = rect1.GetBottom();
+ int right2 = rect2.GetRight();
+ int bottom2 = rect2.GetBottom();
+
+ wxPoint topLeft = wxPoint(wxMin(rect1.x, rect2.x), wxMin(rect1.y, rect2.y));
+ wxPoint bottomRight = wxPoint(wxMax(right1, right2), wxMax(bottom1, bottom2));
+
+ rect.x = topLeft.x; rect.y = topLeft.y;
+ rect.SetRight(bottomRight.x);
+ rect.SetBottom(bottomRight.y);
+
+ return rect;
+}
+
+
+// Calculate the tree overall size so we can set the scrollbar
+// correctly
+void wxRemotelyScrolledTreeCtrl::CalcTreeSize(wxRect& rect)
+{
+ CalcTreeSize(GetRootItem(), rect);
+}
+
+void wxRemotelyScrolledTreeCtrl::CalcTreeSize(const wxTreeItemId& id, wxRect& rect)
+{
+ // TODO: implement GetFirst/NextVisibleItem
+ // for wxGenericTreeCtrl, plus GetBoundingRect.
+
+ // More efficient implementation would be to find the last item (but how?)
+ // Q: is the bounding rect relative to the top of the virtual tree workspace
+ // or the top of the window? How would we convert?
+ wxRect itemSize;
+ if (GetBoundingRect(id, itemSize))
+ {
+ rect = CombineRectangles(rect, itemSize);
+ }
+
+ long cookie;
+ wxTreeItemId childId = GetFirstChild(id, cookie);
+ while (childId != 0)
+ {
+ CalcTreeSize(childId, rect);
+ childId = GetNextChild(childId, cookie);
+ }
+}
+
+// Find the scrolled window that contains this control
+wxScrolledWindow* wxRemotelyScrolledTreeCtrl::GetScrolledWindow() const
+{
+ wxWindow* parent = wxWindow::GetParent();
+ while (parent)
+ {
+ if (parent->IsKindOf(CLASSINFO(wxScrolledWindow)))
+ return (wxScrolledWindow*) parent;
+ parent = parent->GetParent();
+ }
+ return NULL;
+}
+
+void wxRemotelyScrolledTreeCtrl::OnScroll(wxScrollWinEvent& event)
+{
+ int orient = event.GetOrientation();
+ if (orient == wxHORIZONTAL)
+ {
+ event.Skip();
+ return;
+ }
+ wxScrolledWindow* scrollWin = GetScrolledWindow();
+ if (!scrollWin)
+ return;
+
+ int x, y;
+ scrollWin->GetViewStart(& x, & y);
+
+ ScrollToLine(-1, y);
+}
+
+/*
+ * wxTreeCompanionWindow
+ *
+ * A window displaying values associated with tree control items.
+ */
+
+IMPLEMENT_CLASS(wxTreeCompanionWindow, wxWindow)
+
+BEGIN_EVENT_TABLE(wxTreeCompanionWindow, wxWindow)
+ EVT_PAINT(wxTreeCompanionWindow::OnPaint)
+ EVT_SCROLLWIN(wxTreeCompanionWindow::OnScroll)
+ EVT_TREE_ITEM_EXPANDED(-1, wxTreeCompanionWindow::OnExpand)
+ EVT_TREE_ITEM_COLLAPSED(-1, wxTreeCompanionWindow::OnExpand)
+END_EVENT_TABLE()
+
+wxTreeCompanionWindow::wxTreeCompanionWindow(wxWindow* parent, wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& sz,
+ long style):
+ wxWindow(parent, id, pos, sz, style)
+{
+ m_treeCtrl = NULL;
+}
+
+void wxTreeCompanionWindow::DrawItem(wxDC& dc, wxTreeItemId id, const wxRect& rect)
+{
+ // TEST CODE
+#if 1
+ if (m_treeCtrl)
+ {
+ wxString text = m_treeCtrl->GetItemText(id);
+ dc.SetTextForeground(* wxBLACK);
+ dc.SetBackgroundMode(wxTRANSPARENT);
+
+ int textW, textH;
+ dc.GetTextExtent(text, & textW, & textH);
+
+ int x = 5;
+ int y = rect.GetY() + wxMax(0, (rect.GetHeight() - textH) / 2);
+
+ dc.DrawText(text, x, y);
+ }
+#endif
+}
+
+void wxTreeCompanionWindow::OnPaint(wxPaintEvent& event)
+{
+ wxPaintDC dc(this);
+
+ if (!m_treeCtrl)
+ return;
+
+ wxPen pen(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT), 1, wxSOLID);
+ dc.SetPen(pen);
+ dc.SetBrush(* wxTRANSPARENT_BRUSH);
+ wxFont font(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ dc.SetFont(font);
+
+ wxSize clientSize = GetClientSize();
+ wxRect itemRect;
+ int cy=0;
+ wxTreeItemId h, lastH;
+ for(h=m_treeCtrl->GetFirstVisibleItem();h;h=m_treeCtrl->GetNextVisible(h))
+ {
+ if (m_treeCtrl->GetBoundingRect(h, itemRect))
+ {
+ cy = itemRect.GetTop();
+ wxRect drawItemRect(0, cy, clientSize.x, itemRect.GetHeight());
+
+ lastH = h;
+
+ // Draw the actual item
+ DrawItem(dc, h, drawItemRect);
+ dc.DrawLine(0, cy, clientSize.x, cy);
+ }
+ }
+ if (lastH.IsOk() && m_treeCtrl->GetBoundingRect(lastH, itemRect))
+ {
+ cy = itemRect.GetBottom();
+ dc.DrawLine(0, cy, clientSize.x, cy);
+ }
+}
+
+void wxTreeCompanionWindow::OnScroll(wxScrollWinEvent& event)
+{
+ int orient = event.GetOrientation();
+ if (orient == wxHORIZONTAL)
+ {
+ event.Skip();
+ return;
+ }
+ if (!m_treeCtrl)
+ return;
+
+ // TODO: scroll the window physically instead of just refreshing.
+ Refresh(TRUE);
+}
+
+void wxTreeCompanionWindow::OnExpand(wxTreeEvent& event)
+{
+ // TODO: something more optimized than simply refresh the whole
+ // window when the tree is expanded/collapsed. Tricky.
+ Refresh();
+}
+
+/*
+ * wxThinSplitterWindow
+ */
+
+IMPLEMENT_CLASS(wxThinSplitterWindow, wxSplitterWindow)
+
+BEGIN_EVENT_TABLE(wxThinSplitterWindow, wxSplitterWindow)
+ EVT_SIZE(wxThinSplitterWindow::OnSize)
+END_EVENT_TABLE()
+
+wxThinSplitterWindow::wxThinSplitterWindow(wxWindow* parent, wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& sz,
+ long style):
+ wxSplitterWindow(parent, id, pos, sz, style)
+{
+}
+
+void wxThinSplitterWindow::SizeWindows()
+{
+ // The client size may have changed inbetween
+ // the sizing of the first window and the sizing of
+ // the second. So repeat SizeWindows.
+ wxSplitterWindow::SizeWindows();
+ wxSplitterWindow::SizeWindows();
+}
+
+// Tests for x, y over sash
+bool wxThinSplitterWindow::SashHitTest(int x, int y, int tolerance)
+{
+ return wxSplitterWindow::SashHitTest(x, y, 4);
+}
+
+void wxThinSplitterWindow::DrawSash(wxDC& dc)
+{
+ if ( m_sashPosition == 0 || !m_windowTwo)
+ return;
+ if (GetWindowStyle() & wxSP_NOSASH)
+ return;
+
+ int w, h;
+ GetClientSize(&w, &h);
+
+ if ( m_splitMode == wxSPLIT_VERTICAL )
+ {
+ dc.SetPen(* m_facePen);
+ dc.SetBrush(* m_faceBrush);
+ int h1 = h-1;
+ int y1 = 0;
+ if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
+ h1 += 1; // Not sure why this is necessary...
+ if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
+ {
+ y1 = 2; h1 -= 3;
+ }
+ dc.DrawRectangle(m_sashPosition, y1, m_sashSize, h1);
+ }
+ else
+ {
+ dc.SetPen(* m_facePen);
+ dc.SetBrush(* m_faceBrush);
+ int w1 = w-1;
+ int x1 = 0;
+ if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
+ w1 ++;
+ if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
+ {
+ x1 = 2; w1 -= 3;
+ }
+ dc.DrawRectangle(x1, m_sashPosition, w1, m_sashSize);
+ }
+
+ dc.SetPen(wxNullPen);
+ dc.SetBrush(wxNullBrush);
+}
+
+void wxThinSplitterWindow::OnSize(wxSizeEvent& event)
+{
+ wxSplitterWindow::OnSize(event);
+}
+
+/*
+ * wxSplitterScrolledWindow
+ */
+
+IMPLEMENT_CLASS(wxSplitterScrolledWindow, wxScrolledWindow)
+
+BEGIN_EVENT_TABLE(wxSplitterScrolledWindow, wxScrolledWindow)
+ EVT_SCROLLWIN(wxSplitterScrolledWindow::OnScroll)
+ EVT_SIZE(wxSplitterScrolledWindow::OnSize)
+END_EVENT_TABLE()
+
+wxSplitterScrolledWindow::wxSplitterScrolledWindow(wxWindow* parent, wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& sz,
+ long style):
+ wxScrolledWindow(parent, id, pos, sz, style)
+{
+}
+
+void wxSplitterScrolledWindow::OnSize(wxSizeEvent& event)
+{
+ wxSize sz = GetClientSize();
+ if (GetChildren().First())
+ {
+ ((wxWindow*) GetChildren().First()->Data())->SetSize(0, 0, sz.x, sz.y);
+ }
+}
+
+void wxSplitterScrolledWindow::OnScroll(wxScrollWinEvent& event)
+{
+ // Ensure that events being propagated back up the window hierarchy
+ // don't cause an infinite loop
+ static bool inOnScroll = FALSE;
+ if (inOnScroll)
+ return;
+ inOnScroll = TRUE;
+
+ int orient = event.GetOrientation();
+
+ int nScrollInc = CalcScrollInc(event);
+ if (nScrollInc == 0)
+ {
+ inOnScroll = FALSE;
+ return;
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ inOnScroll = FALSE;
+ event.Skip();
+ return;
+#if 0
+ int newPos = m_xScrollPosition + nScrollInc;
+ SetScrollPos(wxHORIZONTAL, newPos, TRUE );
+#endif
+ }
+ else
+ {
+ int newPos = m_yScrollPosition + nScrollInc;
+ SetScrollPos(wxVERTICAL, newPos, TRUE );
+ }
+
+ if (orient == wxHORIZONTAL)
+ {
+ m_xScrollPosition += nScrollInc;
+ }
+ else
+ {
+ m_yScrollPosition += nScrollInc;
+ }
+
+ // Find targets in splitter window and send the event to them
+ wxNode* node = GetChildren().First();
+ while (node)
+ {
+ wxWindow* child = (wxWindow*) node->Data();
+ if (child->IsKindOf(CLASSINFO(wxSplitterWindow)))
+ {
+ wxSplitterWindow* splitter = (wxSplitterWindow*) child;
+ if (splitter->GetWindow1())
+ splitter->GetWindow1()->ProcessEvent(event);
+ if (splitter->GetWindow2())
+ splitter->GetWindow2()->ProcessEvent(event);
+ break;
+ }
+ node = node->Next();
+ }
+
+#ifdef __WXMAC__
+ m_targetWindow->MacUpdateImmediately() ;
+#endif
+
+ inOnScroll = FALSE;
+}
+
projects / wxWidgets.git / commitdiff
