Playing with scrolling, als fixed redraw

bug in wxGrid (outer regions). You must
    not to maths with update regions within
    an scroll related OnPaint(). Everything
    else is allowed.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6224 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/scroll/scroll.cpp

@@ -61,6 +61,8 @@ public:
 
     void OnAbout( wxCommandEvent &event );
     void OnQuit( wxCommandEvent &event );
+    void OnDeleteAll( wxCommandEvent &event );
+    void OnInsertNew( wxCommandEvent &event );
 
     MyCanvas         *m_canvas;
     wxTextCtrl       *m_log;
@@ -265,10 +267,14 @@ void MyCanvas::OnScroll( wxScrollWinEvent &event )
 
 const int ID_QUIT  = 108;
 const int ID_ABOUT = 109;
+const int ID_DELETE_ALL = 110;
+const int ID_INSERT_NEW = 111;
 
 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 
 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
+  EVT_MENU    (ID_DELETE_ALL, MyFrame::OnDeleteAll)
+  EVT_MENU    (ID_INSERT_NEW,  MyFrame::OnInsertNew)
   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 END_EVENT_TABLE()
@@ -278,6 +284,8 @@ MyFrame::MyFrame()
                   wxPoint(20,20), wxSize(470,500) )
 {
     wxMenu *file_menu = new wxMenu();
+    file_menu->Append( ID_DELETE_ALL, "Delete all");
+    file_menu->Append( ID_INSERT_NEW, "Insert new");
     file_menu->Append( ID_ABOUT, "&About..");
     file_menu->Append( ID_QUIT, "E&xit\tAlt-X");
 
@@ -306,6 +314,16 @@ MyFrame::MyFrame()
     SetSizer( topsizer );
 }
 
+void MyFrame::OnDeleteAll( wxCommandEvent &WXUNUSED(event) )
+{
+    m_canvas->DestroyChildren();
+}
+
+void MyFrame::OnInsertNew( wxCommandEvent &WXUNUSED(event) )
+{
+    (void)new wxButton( m_canvas, -1, "Hello", wxPoint(100,100) );
+}
+
 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 {
   Close( TRUE );

src/generic/grid.cpp

@@ -4955,6 +4955,7 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
 
     int top, bottom, left, right;
 
+#ifndef __WXGTK__
     if (reg.IsEmpty())
     {
       int cw, ch;
@@ -4972,6 +4973,12 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
       CalcUnscrolledPosition( x, y, &left, &top );
       CalcUnscrolledPosition( x + w, y + h, &right, &bottom );
     }
+#else
+      int cw, ch;
+      m_gridWin->GetClientSize(&cw, &ch);
+      CalcUnscrolledPosition( 0, 0, &left, &top );
+      CalcUnscrolledPosition( cw, ch, &right, &bottom );
+#endif
 
     // avoid drawing grid lines past the last row and col
     //

src/gtk/win_gtk.c

@@ -187,6 +187,9 @@ gtk_pizza_init (GtkPizza *pizza)
 
     pizza->bin_window = NULL;
     
+    pizza->xoffset = 0;
+    pizza->yoffset = 0;
+
     pizza->configure_serial = 0;
     pizza->scroll_x = 0;
     pizza->scroll_y = 0;

src/gtk/window.cpp

@@ -3445,5 +3445,59 @@ void wxWindow::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
 
     wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
     
+    if ((dx == 0) && (dy == 0)) return;
+
+    gtk_pizza_scroll( GTK_PIZZA(m_wxwindow), -dx, -dy );
+    
+/*    
+    if (m_children.GetCount() > 0)
+    {
         gtk_pizza_scroll( GTK_PIZZA(m_wxwindow), -dx, -dy );
     }
+    else
+    {
+        GtkPizza *pizza = GTK_PIZZA(m_wxwindow);
+    
+        pizza->xoffset -= dx;
+        pizza->yoffset -= dy;
+        
+        GdkGC *m_scrollGC = gdk_gc_new( pizza->bin_window );
+        gdk_gc_set_exposures( m_scrollGC, TRUE );
+
+        int cw = 0;
+        int ch = 0;
+        GetClientSize( &cw, &ch );
+        int w = cw - abs(dx);
+        int h = ch - abs(dy);
+
+        if ((h < 0) || (w < 0))
+        {
+            Refresh();
+        } 
+        else
+        {
+            int s_x = 0;
+            int s_y = 0;
+            if (dx < 0) s_x = -dx;
+            if (dy < 0) s_y = -dy;
+            int d_x = 0;
+            int d_y = 0;
+            if (dx > 0) d_x = dx;
+            if (dy > 0) d_y = dy;
+
+            gdk_window_copy_area( pizza->bin_window, m_scrollGC, d_x, d_y,
+                pizza->bin_window, s_x, s_y, w, h );
+
+            wxRect rect;
+            if (dx < 0) rect.x = cw+dx; else rect.x = 0;
+            if (dy < 0) rect.y = ch+dy; else rect.y = 0;
+            if (dy != 0) rect.width = cw; else rect.width = abs(dx);
+            if (dx != 0) rect.height = ch; else rect.height = abs(dy);
+
+            Refresh( TRUE, &rect );
+        }
+        
+        gdk_gc_unref( m_scrollGC );
+    }
+*/
+}

src/gtk1/win_gtk.c

@@ -187,6 +187,9 @@ gtk_pizza_init (GtkPizza *pizza)
 
     pizza->bin_window = NULL;
     
+    pizza->xoffset = 0;
+    pizza->yoffset = 0;
+
     pizza->configure_serial = 0;
     pizza->scroll_x = 0;
     pizza->scroll_y = 0;

src/gtk1/window.cpp

@@ -3445,5 +3445,59 @@ void wxWindow::ScrollWindow( int dx, int dy, const wxRect* WXUNUSED(rect) )
 
     wxCHECK_RET( m_wxwindow != NULL, wxT("window needs client area for scrolling") );
     
+    if ((dx == 0) && (dy == 0)) return;
+
+    gtk_pizza_scroll( GTK_PIZZA(m_wxwindow), -dx, -dy );
+    
+/*    
+    if (m_children.GetCount() > 0)
+    {
         gtk_pizza_scroll( GTK_PIZZA(m_wxwindow), -dx, -dy );
     }
+    else
+    {
+        GtkPizza *pizza = GTK_PIZZA(m_wxwindow);
+    
+        pizza->xoffset -= dx;
+        pizza->yoffset -= dy;
+        
+        GdkGC *m_scrollGC = gdk_gc_new( pizza->bin_window );
+        gdk_gc_set_exposures( m_scrollGC, TRUE );
+
+        int cw = 0;
+        int ch = 0;
+        GetClientSize( &cw, &ch );
+        int w = cw - abs(dx);
+        int h = ch - abs(dy);
+
+        if ((h < 0) || (w < 0))
+        {
+            Refresh();
+        } 
+        else
+        {
+            int s_x = 0;
+            int s_y = 0;
+            if (dx < 0) s_x = -dx;
+            if (dy < 0) s_y = -dy;
+            int d_x = 0;
+            int d_y = 0;
+            if (dx > 0) d_x = dx;
+            if (dy > 0) d_y = dy;
+
+            gdk_window_copy_area( pizza->bin_window, m_scrollGC, d_x, d_y,
+                pizza->bin_window, s_x, s_y, w, h );
+
+            wxRect rect;
+            if (dx < 0) rect.x = cw+dx; else rect.x = 0;
+            if (dy < 0) rect.y = ch+dy; else rect.y = 0;
+            if (dy != 0) rect.width = cw; else rect.width = abs(dx);
+            if (dx != 0) rect.height = ch; else rect.height = abs(dy);
+
+            Refresh( TRUE, &rect );
+        }
+        
+        gdk_gc_unref( m_scrollGC );
+    }
+*/
+}