require libsm-dev, it's needed for KDE/GNOME detection

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

diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp
index 99e9a43640d7301fbcf356b03bbb0c46fdae81b6..35d85bbefa90cd96ca015d74f97fd6536bc2c680 100644 (file)
--- a/src/generic/scrlwing.cpp
+++ b/src/generic/scrlwing.cpp
@@ -41,6 +41,10 @@
     #include "wx/sizer.h"
 #endif
 
+#ifdef __WXMAC__
+#include "wx/scrolbar.h"
+#endif
+
 #include "wx/recguard.h"
 
 #ifdef __WXMSW__
@@ -231,16 +235,18 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
         }
     }
 
-    // reset the skipped flag to false as it might have been set to true in
-    // ProcessEvent() above
-    event.Skip(false);
-
     if ( evType == wxEVT_PAINT )
     {
         m_scrollHelper->HandleOnPaint((wxPaintEvent &)event);
         return true;
     }
 
+    // reset the skipped flag (which might have been set to true in
+    // ProcessEvent() above) to be able to test it below
+    bool wasSkipped = event.GetSkipped();
+    if ( wasSkipped )
+        event.Skip(false);
+
     if ( evType == wxEVT_SCROLLWIN_TOP ||
          evType == wxEVT_SCROLLWIN_BOTTOM ||
          evType == wxEVT_SCROLLWIN_LINEUP ||
@@ -250,8 +256,16 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
          evType == wxEVT_SCROLLWIN_THUMBTRACK ||
          evType == wxEVT_SCROLLWIN_THUMBRELEASE )
     {
-            m_scrollHelper->HandleOnScroll((wxScrollWinEvent &)event);
-            return !event.GetSkipped();
+        m_scrollHelper->HandleOnScroll((wxScrollWinEvent &)event);
+        if ( !event.GetSkipped() )
+        {
+            // it makes sense to indicate that we processed the message as we
+            // did scroll the window (and also notice that wxAutoScrollTimer
+            // relies on our return value to stop scrolling when we are at top
+            // or bottom already)
+            processed = true;
+            wasSkipped = false;
+        }
     }
 
     if ( evType == wxEVT_ENTER_WINDOW )
@@ -271,10 +285,17 @@ bool wxScrollHelperEvtHandler::ProcessEvent(wxEvent& event)
     else if ( evType == wxEVT_CHAR )
     {
         m_scrollHelper->HandleOnChar((wxKeyEvent &)event);
-        return !event.GetSkipped();
+        if ( !event.GetSkipped() )
+        {
+            processed = true;
+            wasSkipped = false;
+        }
     }
 
-    return false;
+    if ( processed )
+        event.Skip(wasSkipped);
+
+    return processed;
 }
 
 // ----------------------------------------------------------------------------
@@ -447,6 +468,22 @@ wxWindow *wxScrollHelper::GetTargetWindow() const
     return m_targetWindow;
 }
 
+#ifdef __WXMAC__
+static bool wxScrolledWindowHasChildren(wxWindow* win)
+{
+    wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
+    while ( node )
+    {
+        wxWindow* child = node->GetData();
+        if ( !child->IsKindOf(CLASSINFO(wxScrollBar)) )
+            return true;
+
+        node = node->GetNext();
+    }
+    return false;
+}
+#endif
+
 // ----------------------------------------------------------------------------
 // scrolling implementation itself
 // ----------------------------------------------------------------------------
@@ -494,7 +531,12 @@ void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event)
         // flush all pending repaints before we change m_{x,y}ScrollPosition, as
         // otherwise invalidated area could be updated incorrectly later when
         // ScrollWindow() makes sure they're repainted before scrolling them
+#ifdef __WXMAC__
+        // wxWindowMac is taking care of making sure the update area is correctly
+        // set up, while not forcing an immediate redraw
+#else
         m_targetWindow->Update();
+#endif
     }
 
     if (orient == wxHORIZONTAL)
@@ -571,49 +613,36 @@ int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event)
 
     if (orient == wxHORIZONTAL)
     {
-        if (m_xScrollPixelsPerLine > 0)
+        if ( m_xScrollPosition + nScrollInc < 0 )
         {
-            if ( m_xScrollPosition + nScrollInc < 0 )
-            {
-                // As -ve as we can go
-                nScrollInc = -m_xScrollPosition;
-            }
-            else // check for the other bound
+            // As -ve as we can go
+            nScrollInc = -m_xScrollPosition;
+        }
+        else // check for the other bound
+        {
+            const int posMax = m_xScrollLines - m_xScrollLinesPerPage;
+            if ( m_xScrollPosition + nScrollInc > posMax )
             {
-                const int posMax = m_xScrollLines - m_xScrollLinesPerPage;
-                if ( m_xScrollPosition + nScrollInc > posMax )
-                {
-                    // As +ve as we can go
-                    nScrollInc = posMax - m_xScrollPosition;
-                }
+                // As +ve as we can go
+                nScrollInc = posMax - m_xScrollPosition;
             }
         }
-        else
-            m_targetWindow->Refresh(true, GetScrollRect());
     }
-    else
+    else // wxVERTICAL
     {
-        if ( m_yScrollPixelsPerLine > 0 )
+        if ( m_yScrollPosition + nScrollInc < 0 )
         {
-            if ( m_yScrollPosition + nScrollInc < 0 )
-            {
-                // As -ve as we can go
-                nScrollInc = -m_yScrollPosition;
-            }
-            else // check for the other bound
-            {
-                const int posMax = m_yScrollLines - m_yScrollLinesPerPage;
-                if ( m_yScrollPosition + nScrollInc > posMax )
-                {
-                    // As +ve as we can go
-                    nScrollInc = posMax - m_yScrollPosition;
-                }
-            }
+            // As -ve as we can go
+            nScrollInc = -m_yScrollPosition;
         }
-        else
+        else // check for the other bound
         {
-            // VZ: why do we do this? (FIXME)
-            m_targetWindow->Refresh(true, GetScrollRect());
+            const int posMax = m_yScrollLines - m_yScrollLinesPerPage;
+            if ( m_yScrollPosition + nScrollInc > posMax )
+            {
+                // As +ve as we can go
+                nScrollInc = posMax - m_yScrollPosition;
+            }
         }
     }
 
@@ -1299,7 +1328,7 @@ void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event)
         wxScrollWinEvent newEvent;
 
         newEvent.SetPosition(0);
-        newEvent.SetOrientation(wxVERTICAL);
+        newEvent.SetOrientation( event.GetWheelAxis() == 0 ? wxVERTICAL : wxHORIZONTAL);
         newEvent.SetEventObject(m_win);
 
         if (event.IsPageScroll())
@@ -1350,7 +1379,13 @@ bool wxScrolledWindow::Create(wxWindow *parent,
     MacSetClipChildren( true ) ;
 #endif
 
-    bool ok = wxPanel::Create(parent, id, pos, size, style|wxHSCROLL|wxVSCROLL, name);
+    // by default, we're scrollable in both directions (but if one of the
+    // styles is specified explicitly, we shouldn't add the other one
+    // automatically)
+    if ( !(style & (wxHSCROLL | wxVSCROLL)) )
+        style |= wxHSCROLL | wxVSCROLL;
+
+    bool ok = wxPanel::Create(parent, id, pos, size, style, name);
 
     return ok;
 }