X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a58a12e9b7196c339c1c1d282ede158a70644e07..9b1801c19c82340be79810c8b7617b05caa0cd59:/src/generic/scrolwin.cpp?ds=inline

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index 513cb292f2..17facb6ea2 100644
--- a/src/generic/scrolwin.cpp
+++ b/src/generic/scrolwin.cpp
@@ -58,7 +58,7 @@ BEGIN_EVENT_TABLE(wxScrolledWindow, wxPanel)
     EVT_SCROLLWIN(wxScrolledWindow::OnScroll)
     EVT_SIZE(wxScrolledWindow::OnSize)
     EVT_PAINT(wxScrolledWindow::OnPaint)
-    EVT_KEY_DOWN(wxScrolledWindow::OnKeyDown)
+    EVT_CHAR(wxScrolledWindow::OnChar)
 END_EVENT_TABLE()
 
 IMPLEMENT_DYNAMIC_CLASS(wxScrolledWindow, wxPanel)
@@ -260,7 +260,7 @@ void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
             m_targetWindow->ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL);
         else
             m_targetWindow->Refresh();
-  }
+    }
 #ifdef __WXMAC__
     m_targetWindow->MacUpdateImmediately() ;
 #endif
@@ -385,14 +385,14 @@ void wxScrolledWindow::AdjustScrollbars()
 
     if (m_xScrollLines > 0)
     {
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
-            m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition);
+        // the visible portion of it or if below zero
+        m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition);
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
 
         SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines);
@@ -407,13 +407,13 @@ void wxScrolledWindow::AdjustScrollbars()
 
     if (m_yScrollLines > 0)
     {
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
         m_yScrollPosition = wxMax( 0, m_yScrollPosition );
 
@@ -509,43 +509,44 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         int old_x = m_xScrollPosition;
         m_xScrollPosition = x_pos;
 
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition );
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
 
-        m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+        if (old_x == m_xScrollPosition) return;
 
-            m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+        m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+        m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
     }
     if (y_pos != -1)
     {
         int old_y = m_yScrollPosition;
         m_yScrollPosition = y_pos;
 
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
         m_yScrollPosition = wxMax( 0, m_yScrollPosition );
+        
+        if (old_y == m_yScrollPosition) return;
 
         m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
-
         m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
     }
 
-
 #ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately() ;
+    m_targetWindow->MacUpdateImmediately();
 #endif
 }
 
@@ -613,8 +614,11 @@ void wxScrolledWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
     OnDraw(dc);
 }
 
-// kbd handling
-void wxScrolledWindow::OnKeyDown(wxKeyEvent& event)
+// kbd handling: notice that we use OnChar() and not OnKeyDown() for
+// compatibility here - if we used OnKeyDown(), the programs which process
+// arrows themselves in their OnChar() would never get the message and like
+// this they always have the priority
+void wxScrolledWindow::OnChar(wxKeyEvent& event)
 {
     int stx, sty,       // view origin
         szx, szy,       // view size (total)
@@ -622,11 +626,28 @@ void wxScrolledWindow::OnKeyDown(wxKeyEvent& event)
 
     ViewStart(&stx, &sty);
     GetClientSize(&clix, &cliy);
-    clix /= m_xScrollPixelsPerLine;
-    cliy /= m_yScrollPixelsPerLine;
     GetVirtualSize(&szx, &szy);
-    szx /= m_xScrollPixelsPerLine;
-    szy /= m_yScrollPixelsPerLine;
+
+    if( m_xScrollPixelsPerLine )
+    {
+        clix /= m_xScrollPixelsPerLine;
+	szx /= m_xScrollPixelsPerLine;
+    }
+    else
+    {
+        clix = 0;
+	szx = -1;
+    }
+    if( m_yScrollPixelsPerLine )
+    {
+        cliy /= m_yScrollPixelsPerLine;
+        szy /= m_yScrollPixelsPerLine;
+    }
+    else
+    {
+        cliy = 0;
+	szy = -1;
+    }
 
     switch ( event.KeyCode() )
     {
@@ -640,16 +661,12 @@ void wxScrolledWindow::OnKeyDown(wxKeyEvent& event)
             Scroll(-1, sty + (5 * cliy / 6));
             break;
 
-        // notice that handling of Ctrl-Home/End is asymmetrical: Home goes to
-        // the beginning of the current line, Ctrl-Home returns to the origin
-        // while End goes to the bottom without changing horizontal position
-        // and only Ctrl-End does go to the most rightmost position as well
         case WXK_HOME:
             Scroll(0, event.ControlDown() ? 0 : -1);
             break;
 
         case WXK_END:
-            Scroll(event.ControlDown() ? szx - clix : -1, szy - cliy);
+            Scroll(szx - clix, event.ControlDown() ? szy - cliy : -1);
             break;
 
         case WXK_UP: