Silence warning about truncation since the comment says it ok

[wxWidgets.git] / src / generic / scrlwing.cpp

diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp
index 6cdef7f64e366e3da90c5fc7185d0ef39df8b6ae..be7802df03f8de0975d7d76e8dae1264c08bab67 100644 (file)
--- a/src/generic/scrlwing.cpp
+++ b/src/generic/scrlwing.cpp
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        generic/scrolwin.cpp
 /////////////////////////////////////////////////////////////////////////////
 // Name:        generic/scrolwin.cpp

-// Purpose:     wxGenericScrolledWindow implementation
+// Purpose:     wxScrolledWindow implementation

 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement.
 //              Ron Lee on 10.4.02:  virtual size / auto scrollbars et al.
 // Author:      Julian Smart
 // Modified by: Vadim Zeitlin on 31.08.00: wxScrollHelper allows to implement.
 //              Ron Lee on 10.4.02:  virtual size / auto scrollbars et al.


@@ -18,10 +18,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "genscrolwin.h"
-#endif
-

 #ifdef __VMS
 #define XtDisplay XTDISPLAY
 #endif
 #ifdef __VMS
 #define XtDisplay XTDISPLAY
 #endif


@@ -33,8 +29,6 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

-#if !defined(__WXGTK__) || defined(__WXUNIVERSAL__)
-

 #include "wx/utils.h"
 #include "wx/dcclient.h"
 
 #include "wx/utils.h"
 #include "wx/dcclient.h"
 


@@ -48,6 +42,7 @@
 
 #ifdef __WXMSW__
     #include <windows.h> // for DLGC_WANTARROWS
 
 #ifdef __WXMSW__
     #include <windows.h> // for DLGC_WANTARROWS

+    #include "wx/msw/winundef.h"

 #endif
 
 #ifdef __WXMOTIF__
 #endif
 
 #ifdef __WXMOTIF__


@@ -62,8 +57,6 @@
 #endif
 #endif
 
 #endif
 #endif
 

-IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow)
-

 /*
     TODO PROPERTIES
         style wxHSCROLL | wxVSCROLL
 /*
     TODO PROPERTIES
         style wxHSCROLL | wxVSCROLL


@@ -287,6 +280,8 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
 
 wxScrollHelper::wxScrollHelper(wxWindow *win)
 {
 
 wxScrollHelper::wxScrollHelper(wxWindow *win)
 {

+    wxASSERT_MSG( win, _T("associated window can't be NULL in wxScrollHelper") );
+

     m_xScrollPixelsPerLine =
     m_yScrollPixelsPerLine =
     m_xScrollPosition =
     m_xScrollPixelsPerLine =
     m_yScrollPixelsPerLine =
     m_xScrollPosition =


@@ -312,8 +307,10 @@ wxScrollHelper::wxScrollHelper(wxWindow *win)
 
     m_handler = NULL;
 
 
     m_handler = NULL;
 

-    if ( win )
-        SetWindow(win);
+    m_win = win;
+
+    // by default, the associated window is also the target window
+    DoSetTargetWindow(win);

 }
 
 wxScrollHelper::~wxScrollHelper()
 }
 
 wxScrollHelper::~wxScrollHelper()


@@ -364,7 +361,11 @@ void wxScrollHelper::SetScrollbars(int pixelsPerUnitX,
 
     // The above should arguably be deprecated, this however we still need.
 
 
     // The above should arguably be deprecated, this however we still need.
 

-    m_targetWindow->SetVirtualSize( w, h );
+    // take care not to set 0 virtual size, 0 means that we don't have any
+    // scrollbars and hence we should use the real size instead of the virtual
+    // one which is indicated by using wxDefaultCoord
+    m_targetWindow->SetVirtualSize( w ? w : wxDefaultCoord,
+                                    h ? h : wxDefaultCoord);

 
     if (do_refresh && !noRefresh)
         m_targetWindow->Refresh(true, GetScrollRect());
 
     if (do_refresh && !noRefresh)
         m_targetWindow->Refresh(true, GetScrollRect());


@@ -406,19 +407,12 @@ void wxScrollHelper::DeleteEvtHandler()
     }
 }
 
     }
 }
 

-void wxScrollHelper::SetWindow(wxWindow *win)
-{
-    wxCHECK_RET( win, _T("wxScrollHelper needs a window to scroll") );
-
-    m_win = win;
-
-    // by default, the associated window is also the target window
-    DoSetTargetWindow(win);
-}
-

 void wxScrollHelper::DoSetTargetWindow(wxWindow *target)
 {
     m_targetWindow = target;
 void wxScrollHelper::DoSetTargetWindow(wxWindow *target)
 {
     m_targetWindow = target;

+#ifdef __WXMAC__
+    target->MacSetClipChildren( true ) ;
+#endif

 
     // install the event handler which will intercept the events we're
     // interested in (but only do it for our real window, not the target window
 
     // install the event handler which will intercept the events we're
     // interested in (but only do it for our real window, not the target window


@@ -641,8 +635,13 @@ void wxScrollHelper::AdjustScrollbars()
     //     it here for now but it would be better to ensure that all ports
     //     generate EVT_SIZE when scrollbars [dis]appear, emulating it if
     //     necessary, and remove it later
     //     it here for now but it would be better to ensure that all ports
     //     generate EVT_SIZE when scrollbars [dis]appear, emulating it if
     //     necessary, and remove it later

+    // JACS: Stop potential infinite loop by limiting number of iterations
+    int iterationCount = 0;
+    const int iterationMax = 5;

     do
     {
     do
     {

+        iterationCount ++;
+

         GetTargetSize(&w, 0);
 
         // scroll lines per page: if 0, no scrolling is needed
         GetTargetSize(&w, 0);
 
         // scroll lines per page: if 0, no scrolling is needed


@@ -754,7 +753,7 @@ void wxScrollHelper::AdjustScrollbars()
         oldh = h;
 
         GetTargetSize( &w, &h );
         oldh = h;
 
         GetTargetSize( &w, &h );

-    } while ( w != oldw || h != oldh );
+    } while ( (w != oldw || h != oldh) && (iterationCount < iterationMax) );

 
 #ifdef __WXMOTIF__
     // Sorry, some Motif-specific code to implement a backing pixmap
 
 #ifdef __WXMOTIF__
     // Sorry, some Motif-specific code to implement a backing pixmap


@@ -931,15 +930,6 @@ void wxScrollHelper::GetViewStart (int *x, int *y) const
         *y = m_yScrollPosition;
 }
 
         *y = m_yScrollPosition;
 }
 

-#if WXWIN_COMPATIBILITY_2_2
-
-void wxScrollHelper::ViewStart(int *x, int *y) const
-{
-    GetViewStart( x, y );
-}
-
-#endif // WXWIN_COMPATIBILITY_2_2
-

 void wxScrollHelper::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const
 {
     if ( xx )
 void wxScrollHelper::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const
 {
     if ( xx )


@@ -956,6 +946,71 @@ void wxScrollHelper::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) co
         *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
 }
 
         *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
 }
 

+// ----------------------------------------------------------------------------
+// geometry
+// ----------------------------------------------------------------------------
+
+bool wxScrollHelper::ScrollLayout()
+{
+    if ( m_win->GetSizer() && m_targetWindow == m_win )
+    {
+        // If we're the scroll target, take into account the
+        // virtual size and scrolled position of the window.
+
+        int x, y, w, h;
+        CalcScrolledPosition(0,0, &x,&y);
+        m_win->GetVirtualSize(&w, &h);
+        m_win->GetSizer()->SetDimension(x, y, w, h);
+        return true;
+    }
+
+    // fall back to default for LayoutConstraints
+    return m_win->wxWindow::Layout();
+}
+
+void wxScrollHelper::ScrollDoSetVirtualSize(int x, int y)
+{
+    m_win->wxWindow::DoSetVirtualSize( x, y );
+    AdjustScrollbars();
+
+    if (m_win->GetAutoLayout())
+        m_win->Layout();
+}
+
+// wxWindow's GetBestVirtualSize returns the actual window size,
+// whereas we want to return the virtual size
+wxSize wxScrollHelper::ScrollGetBestVirtualSize() const
+{
+    wxSize clientSize(m_win->GetClientSize());
+    if ( m_win->GetSizer() )
+        clientSize.IncTo(m_win->GetSizer()->CalcMin());
+
+    return clientSize;
+}
+
+// return the window best size from the given best virtual size
+wxSize
+wxScrollHelper::ScrollGetWindowSizeForVirtualSize(const wxSize& size) const
+{
+    // Only use the content to set the window size in the direction
+    // where there's no scrolling; otherwise we're going to get a huge
+    // window in the direction in which scrolling is enabled
+    int ppuX, ppuY;
+    GetScrollPixelsPerUnit(&ppuX, &ppuY);
+
+    wxSize minSize = m_win->GetMinSize();
+    if ( !minSize.IsFullySpecified() )
+        minSize = m_win->GetSize();
+
+    wxSize best(size);
+    if (ppuX > 0)
+        best.x = minSize.x;
+    if (ppuY > 0)
+        best.y = minSize.y;
+
+    return best;
+}
+

 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------


@@ -966,9 +1021,9 @@ void wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event))
     if ( m_targetWindow->GetAutoLayout() )
     {
         wxSize size = m_targetWindow->GetBestVirtualSize();
     if ( m_targetWindow->GetAutoLayout() )
     {
         wxSize size = m_targetWindow->GetBestVirtualSize();

-        
+

         // This will call ::Layout() and ::AdjustScrollbars()
         // This will call ::Layout() and ::AdjustScrollbars()

-        SetVirtualSize( size );
+        m_win->SetVirtualSize( size );

     }
     else
     {
     }
     else
     {


@@ -1228,16 +1283,16 @@ void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event)
 #endif // wxUSE_MOUSEWHEEL
 
 // ----------------------------------------------------------------------------
 #endif // wxUSE_MOUSEWHEEL
 
 // ----------------------------------------------------------------------------

-// wxGenericScrolledWindow implementation
+// wxScrolledWindow implementation

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxGenericScrolledWindow, wxPanel)
+IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxPanel)

 
 

-BEGIN_EVENT_TABLE(wxGenericScrolledWindow, wxPanel)
-    EVT_PAINT(wxGenericScrolledWindow::OnPaint)
+BEGIN_EVENT_TABLE(wxScrolledWindow, wxPanel)
+    EVT_PAINT(wxScrolledWindow::OnPaint)

 END_EVENT_TABLE()
 
 END_EVENT_TABLE()
 

-bool wxGenericScrolledWindow::Create(wxWindow *parent,
+bool wxScrolledWindow::Create(wxWindow *parent,

                               wxWindowID id,
                               const wxPoint& pos,
                               const wxSize& size,
                               wxWindowID id,
                               const wxPoint& pos,
                               const wxSize& size,


@@ -1245,44 +1300,20 @@ bool wxGenericScrolledWindow::Create(wxWindow *parent,
                               const wxString& name)
 {
     m_targetWindow = this;
                               const wxString& name)
 {
     m_targetWindow = this;

+#ifdef __WXMAC__
+    MacSetClipChildren( true ) ;
+#endif

 
     bool ok = wxPanel::Create(parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name);
 
     return ok;
 }
 
 
     bool ok = wxPanel::Create(parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name);
 
     return ok;
 }
 

-wxGenericScrolledWindow::~wxGenericScrolledWindow()
-{
-}
-
-bool wxGenericScrolledWindow::Layout()
-{
-    if (GetSizer() && m_targetWindow == this)
-    {
-        // If we're the scroll target, take into account the
-        // virtual size and scrolled position of the window.
-
-        int x, y, w, h;
-        CalcScrolledPosition(0,0, &x,&y);
-        GetVirtualSize(&w, &h);
-        GetSizer()->SetDimension(x, y, w, h);
-        return true;
-    }
-
-    // fall back to default for LayoutConstraints
-    return wxPanel::Layout();
-}
-
-void wxGenericScrolledWindow::DoSetVirtualSize(int x, int y)
+wxScrolledWindow::~wxScrolledWindow()

 {
 {

-    wxPanel::DoSetVirtualSize( x, y );
-    AdjustScrollbars();
-
-    if (GetAutoLayout())
-        Layout();

 }
 
 }
 

-void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event)
+void wxScrolledWindow::OnPaint(wxPaintEvent& event)

 {
     // the user code didn't really draw the window if we got here, so set this
     // flag to try to call OnDraw() later
 {
     // the user code didn't really draw the window if we got here, so set this
     // flag to try to call OnDraw() later


@@ -1292,8 +1323,7 @@ void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event)
 }
 
 #ifdef __WXMSW__
 }
 
 #ifdef __WXMSW__

-WXLRESULT
-wxGenericScrolledWindow::MSWWindowProc(WXUINT nMsg,
+WXLRESULT wxScrolledWindow::MSWWindowProc(WXUINT nMsg,

                                        WXWPARAM wParam,
                                        WXLPARAM lParam)
 {
                                        WXWPARAM wParam,
                                        WXLPARAM lParam)
 {


@@ -1312,6 +1342,3 @@ wxGenericScrolledWindow::MSWWindowProc(WXUINT nMsg,
 
 #endif // __WXMSW__
 
 
 #endif // __WXMSW__
 

-#endif // !wxGTK
-
-// vi:sts=4:sw=4:et