X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/47a3ff38a32d66a7b2c29f321ec0bbc6fd0b55d1..27b2dd53f629a78266c51d1b0b5db918401dcd4f:/src/gtk/scrolwin.cpp

diff --git a/src/gtk/scrolwin.cpp b/src/gtk/scrolwin.cpp
index de2b788576..df01919089 100644
--- a/src/gtk/scrolwin.cpp
+++ b/src/gtk/scrolwin.cpp
@@ -28,10 +28,9 @@
     #pragma hdrstop
 #endif
 
+#include "wx/scrolwin.h"
 #include "wx/utils.h"
 #include "wx/dcclient.h"
-
-#include "wx/scrolwin.h"
 #include "wx/panel.h"
 #include "wx/sizer.h"
 
@@ -288,7 +287,7 @@ bool wxScrolledWindow::Create(wxWindow *parent,
     GtkHConnectEvent();
 
     // these handlers block mouse events to any window during scrolling such as
-    // motion events and prevent GTK and wxWindows from fighting over where the
+    // motion events and prevent GTK and wxWidgets from fighting over where the
     // slider should be
 
     gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_press_event",
@@ -326,10 +325,8 @@ void wxScrolledWindow::DoSetVirtualSize( int x, int y )
     wxPanel::DoSetVirtualSize( x, y );
     AdjustScrollbars();
 
-#if wxUSE_CONSTRAINTS
     if (GetAutoLayout())
         Layout();
-#endif
 }
 
 /*
@@ -354,7 +351,7 @@ void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY,
 
     // Setting hints here should arguably be deprecated, but without it
     // a sizer might override this manual scrollbar setting in old code.
-    m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
+    // m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
 
     m_targetWindow->SetVirtualSize( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
 
@@ -374,7 +371,7 @@ void wxScrolledWindow::AdjustScrollbars()
 
     m_targetWindow->GetClientSize( &w, &h );
     m_targetWindow->GetVirtualSize( &vw, &vh );
-
+    
     if (m_xScrollPixelsPerLine == 0)
     {
         m_hAdjust->upper = 1.0;
@@ -383,10 +380,16 @@ void wxScrolledWindow::AdjustScrollbars()
     }
     else
     {
-        m_hAdjust->upper = vw / m_xScrollPixelsPerLine;
-        m_hAdjust->page_increment = (w / m_xScrollPixelsPerLine);
-        m_hAdjust->page_size = m_hAdjust->page_increment;
+        m_hAdjust->upper = (vw+m_xScrollPixelsPerLine-1) / m_xScrollPixelsPerLine;
+        m_hAdjust->page_size = w / m_xScrollPixelsPerLine;
+        m_hAdjust->page_increment = w / m_xScrollPixelsPerLine;
 
+        // Special case. When client and virtual size are very close but
+        // the client is big enough, kill scrollbar.
+        
+        if ((m_hAdjust->page_size < m_hAdjust->upper) && (w >= vw)) 
+            m_hAdjust->page_size += 1.0;
+        
         // If the scrollbar hits the right side, move the window
         // right to keep it from over extending.
 
@@ -411,9 +414,12 @@ void wxScrolledWindow::AdjustScrollbars()
     }
     else
     {
-        m_vAdjust->upper = vh / m_yScrollPixelsPerLine;
-        m_vAdjust->page_increment = (h / m_yScrollPixelsPerLine);
-        m_vAdjust->page_size = m_vAdjust->page_increment;
+        m_vAdjust->upper = (vh+m_yScrollPixelsPerLine-1) / m_yScrollPixelsPerLine;
+        m_vAdjust->page_size = h / m_yScrollPixelsPerLine;
+        m_vAdjust->page_increment = h / m_yScrollPixelsPerLine;
+        
+        if ((m_vAdjust->page_size < m_vAdjust->upper) && (h >= vh)) 
+            m_vAdjust->page_size += 1.0;
 
         if ((m_vAdjust->value != 0.0) && (m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper))
         {
@@ -453,7 +459,7 @@ wxWindow *wxScrolledWindow::GetTargetWindow() const
 
 // Override this function if you don't want to have wxScrolledWindow
 // automatically change the origin according to the scroll position.
-void wxScrolledWindow::PrepareDC(wxDC& dc)
+void wxScrolledWindow::DoPrepareDC(wxDC& dc)
 {
     dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
                         -m_yScrollPosition * m_yScrollPixelsPerLine );
@@ -562,7 +568,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
         m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
 
-        // Just update the scrollbar, don't send any wxWindows event
+        // Just update the scrollbar, don't send any wxWidgets event
         GtkHDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
         GtkHConnectEvent();
@@ -581,7 +587,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
         m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
 
-        // Just update the scrollbar, don't send any wxWindows event
+        // Just update the scrollbar, don't send any wxWidgets event
         GtkVDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
         GtkVConnectEvent();
@@ -783,14 +789,14 @@ void wxScrolledWindow::SetScrollPos( int orient, int pos, bool refresh )
     {
         if (orient == wxHORIZONTAL)
         {
-            // Just update the scrollbar, don't send any wxWindows event
+            // Just update the scrollbar, don't send any wxWidgets event
             GtkHDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
             GtkHConnectEvent();
         }
         else
         {
-            // Just update the scrollbar, don't send any wxWindows event
+            // Just update the scrollbar, don't send any wxWidgets event
             GtkVDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
             GtkVConnectEvent();
@@ -846,19 +852,12 @@ bool wxScrolledWindow::Layout()
 // Default OnSize resets scrollbars, if any
 void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 {
-    if( GetAutoLayout() || m_targetWindow->GetAutoLayout() )
+    if ( m_targetWindow->GetAutoLayout() )
     {
-        if( m_targetWindow != this )
-            m_targetWindow->FitInside();
-
-        FitInside();
-
-        // FIXME:  Something is really weird here...  This should be
-        // called by FitInside above (and apparently is), yet the
-        // scrollsub sample will get the scrollbar wrong if resized
-        // quickly.  This masks the bug, but is surely not the right
-        // answer at all.
-        AdjustScrollbars();
+        wxSize size = m_targetWindow->GetBestVirtualSize();
+        
+        // This will call ::Layout() and ::AdjustScrollbars()
+        SetVirtualSize( size );
     }
     else
     {