X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b03f81b7780b8ea5e25894929f55762e40cbd70d..163dc80eff2faed2c3c1fb3ee6b46eb5ae9d70f9:/src/gtk/scrolwin.cpp

diff --git a/src/gtk/scrolwin.cpp b/src/gtk/scrolwin.cpp
index a072691442..de2b788576 100644
--- a/src/gtk/scrolwin.cpp
+++ b/src/gtk/scrolwin.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        gtk/scrolwin.cpp
 // Purpose:     wxScrolledWindow implementation
-// Author:      Julian Smart
+// Author:      Robert Roebling
 // Modified by: Ron Lee
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:     wxWindows license
+// Copyright:   (c) Robert Roebling
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "scrolwin.h"
 #endif
 
@@ -83,7 +83,7 @@ static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust,
     if (g_blockEventsOnDrag) return;
 
     if (!win->m_hasVMT) return;
-
+    
     win->GtkVScroll( adjust->value,
             GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->vscrollbar) );
 }
@@ -313,7 +313,7 @@ bool wxScrolledWindow::Create(wxWindow *parent,
     PostCreation();
 
     Show( TRUE );
-
+    
     return TRUE;
 }
 
@@ -340,8 +340,11 @@ void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY,
                                       int noUnitsX, int noUnitsY,
                                       int xPos, int yPos, bool noRefresh )
 {
-    int old_x = m_xScrollPixelsPerLine * m_xScrollPosition;
-    int old_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+    int xs, ys;
+    GetViewStart (& xs, & ys);
+    
+    int old_x = m_xScrollPixelsPerLine * xs;
+    int old_y = m_yScrollPixelsPerLine * ys;
 
     m_xScrollPixelsPerLine = pixelsPerUnitX;
     m_yScrollPixelsPerLine = pixelsPerUnitY;
@@ -349,8 +352,12 @@ void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY,
     m_hAdjust->value = m_xScrollPosition = xPos;
     m_vAdjust->value = m_yScrollPosition = yPos;
 
+    // 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->SetVirtualSize( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
+
     if (!noRefresh)
     {
         int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
@@ -371,48 +378,58 @@ void wxScrolledWindow::AdjustScrollbars()
     if (m_xScrollPixelsPerLine == 0)
     {
         m_hAdjust->upper = 1.0;
+        m_hAdjust->page_increment = 1.0;
         m_hAdjust->page_size = 1.0;
     }
     else
     {
         m_hAdjust->upper = vw / m_xScrollPixelsPerLine;
-        m_hAdjust->page_size = (w / m_xScrollPixelsPerLine);
+        m_hAdjust->page_increment = (w / m_xScrollPixelsPerLine);
+        m_hAdjust->page_size = m_hAdjust->page_increment;
 
         // If the scrollbar hits the right side, move the window
         // right to keep it from over extending.
 
-        if( m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper )
+        if ((m_hAdjust->value != 0.0) && (m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper))
         {
+            m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size;
+            if (m_hAdjust->value < 0.0)
+                m_hAdjust->value = 0.0;
+                
             if (GetChildren().GetCount() == 0)
-            {
-                m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size;
-                m_xScrollPosition = (int)m_hAdjust->value;
-            }
+                m_xScrollPosition = (int)m_hAdjust->value; // This is enough without child windows
+            else
+                gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); // Actually scroll window
         }
     }
 
     if (m_yScrollPixelsPerLine == 0)
     {
         m_vAdjust->upper = 1.0;
+        m_vAdjust->page_increment = 1.0;
         m_vAdjust->page_size = 1.0;
     }
     else
     {
         m_vAdjust->upper = vh / m_yScrollPixelsPerLine;
-        m_vAdjust->page_size = (h / m_yScrollPixelsPerLine);
+        m_vAdjust->page_increment = (h / m_yScrollPixelsPerLine);
+        m_vAdjust->page_size = m_vAdjust->page_increment;
 
-        if( m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper )
+        if ((m_vAdjust->value != 0.0) && (m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper))
         {
+            m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size;
+            if (m_vAdjust->value < 0.0)
+                m_vAdjust->value = 0.0;
+                
             if (GetChildren().GetCount() == 0)
-            {
-                m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size;
-                m_yScrollPosition = (int)m_vAdjust->value;
-            }
+                m_yScrollPosition = (int)m_vAdjust->value;  
+            else
+                gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
         }
     }
 
-    m_xScrollLinesPerPage = (int)(m_hAdjust->page_size + 0.5);
-    m_yScrollLinesPerPage = (int)(m_vAdjust->page_size + 0.5);
+    m_xScrollLinesPerPage = (int)(m_hAdjust->page_increment + 0.5);
+    m_yScrollLinesPerPage = (int)(m_vAdjust->page_increment + 0.5);
 
     gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
     gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
@@ -429,7 +446,7 @@ void wxScrolledWindow::SetTargetWindow( wxWindow *target, bool WXUNUSED(pushEven
     m_targetWindow = target;
 }
 
-wxWindow *wxScrolledWindow::GetTargetWindow()
+wxWindow *wxScrolledWindow::GetTargetWindow() const
 {
     return m_targetWindow;
 }
@@ -628,18 +645,24 @@ void wxScrolledWindow::GetViewStart (int *x, int *y) const
 
 void wxScrolledWindow::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const
 {
+    int xs, ys;
+    GetViewStart (& xs, & ys);
+    
     if ( xx )
-        *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
+        *xx = x - xs * m_xScrollPixelsPerLine;
     if ( yy )
-        *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
+        *yy = y - ys * m_yScrollPixelsPerLine;
 }
 
 void wxScrolledWindow::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
 {
+    int xs, ys;
+    GetViewStart (& xs, & ys);
+    
     if ( xx )
-        *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
+        *xx = x + xs * m_xScrollPixelsPerLine;
     if ( yy )
-        *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
+        *yy = y + ys * m_yScrollPixelsPerLine;
 }
 
 int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
@@ -823,10 +846,24 @@ bool wxScrolledWindow::Layout()
 // Default OnSize resets scrollbars, if any
 void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 {
-    if( m_targetWindow != this )
-        m_targetWindow->SetVirtualSize( m_targetWindow->GetClientSize() );
+    if( GetAutoLayout() || m_targetWindow->GetAutoLayout() )
+    {
+        if( m_targetWindow != this )
+            m_targetWindow->FitInside();
+
+        FitInside();
 
-    SetVirtualSize( GetClientSize() );
+        // 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();
+    }
+    else
+    {
+        AdjustScrollbars();
+    }
 }
 
 // This calls OnDraw, having adjusted the origin according to the current
@@ -849,7 +886,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
         szx, szy,       // view size (total)
         clix, cliy;     // view size (on screen)
 
-    ViewStart(&stx, &sty);
+    GetViewStart(&stx, &sty);
     GetClientSize(&clix, &cliy);
     GetVirtualSize(&szx, &szy);
 
@@ -878,7 +915,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
         yScrollOld = GetScrollPos(wxVERTICAL);
 
     int dsty;
-    switch ( event.KeyCode() )
+    switch ( event.GetKeyCode() )
     {
         case WXK_PAGEUP:
         case WXK_PRIOR: