added a check which should prevent the crash of bug 555111

[wxWidgets.git] / src / gtk / slider.cpp

diff --git a/src/gtk/slider.cpp b/src/gtk/slider.cpp
index fba7a8b971a6f347d653dafb877cfd7e77d5f1cd..a5fbd38b54b15b55c334525d4c95d87bb539d4e3 100644 (file)
--- a/src/gtk/slider.cpp
+++ b/src/gtk/slider.cpp
@@ -1,10 +1,10 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        slider.cpp
+// Name:        gtk/slider.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
-// Licence:           wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
@@ -19,8 +19,7 @@
 
 #include <math.h>
 
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#include "wx/gtk/private.h"
 
 //-----------------------------------------------------------------------------
 // idle system
@@ -33,7 +32,7 @@ extern bool g_isIdle;
 // data
 //-----------------------------------------------------------------------------
 
-extern bool   g_blockEventsOnDrag;
+extern bool g_blockEventsOnDrag;
 
 static const float sensitivity = 0.02;
 
@@ -41,7 +40,9 @@ static const float sensitivity = 0.02;
 // "value_changed"
 //-----------------------------------------------------------------------------
 
-static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win )
+static void gtk_slider_callback( GtkAdjustment *adjust,
+                                 SCROLLBAR_CBACK_ARG
+                                 wxSlider *win )
 {
     if (g_isIdle) wxapp_install_idle_handler();
 
@@ -53,19 +54,13 @@ static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win )
 
     win->m_oldPos = adjust->value;
 
-    GtkRange *range = GTK_RANGE( win->m_widget );
+    wxEventType command = GtkScrollTypeToWx(GET_SCROLL_TYPE(win->m_widget));
 
-    wxEventType command = wxEVT_SCROLL_THUMBTRACK;
-    if      (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLL_LINEUP;
-    else if (range->scroll_type == GTK_SCROLL_STEP_FORWARD)  command = wxEVT_SCROLL_LINEDOWN;
-    else if (range->scroll_type == GTK_SCROLL_PAGE_BACKWARD) command = wxEVT_SCROLL_PAGEUP;
-    else if (range->scroll_type == GTK_SCROLL_PAGE_FORWARD)  command = wxEVT_SCROLL_PAGEDOWN;
+    double dvalue = adjust->value;
+    int value = (int)(dvalue < 0 ? dvalue - 0.5 : dvalue + 0.5);
 
-    int value = (int)ceil(adjust->value);
-
-    int orient = wxHORIZONTAL;
-    if ( (win->GetWindowStyleFlag() & wxSB_VERTICAL) == wxSB_VERTICAL)
-        orient = wxVERTICAL;
+    int orient = win->GetWindowStyleFlag() & wxSL_VERTICAL ? wxVERTICAL
+                                                           : wxHORIZONTAL;
 
     wxScrollEvent event( command, win->GetId(), value, orient );
     event.SetEventObject( win );
@@ -73,6 +68,7 @@ static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win )
 
     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, win->GetId() );
     cevent.SetEventObject( win );
+    cevent.SetInt( value );
     win->GetEventHandler()->ProcessEvent( cevent );
 }
 
@@ -94,7 +90,7 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {
         wxFAIL_MSG( wxT("wxSlider creation failed") );
-           return FALSE;
+        return FALSE;
     }
 
     m_oldPos = 0.0;
@@ -107,7 +103,7 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
     if (style & wxSL_LABELS)
     {
         gtk_scale_set_draw_value( GTK_SCALE( m_widget ), TRUE );
-           gtk_scale_set_digits( GTK_SCALE( m_widget ), 0 );
+        gtk_scale_set_digits( GTK_SCALE( m_widget ), 0 );
 
         /* labels need more space and too small window will
            cause junk to appear on the dialog */
@@ -156,7 +152,10 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
 
 int wxSlider::GetValue() const
 {
-    return (int)(m_adjust->value+0.5);
+    // we want to round to the nearest integer, i.e. 0.9 is rounded to 1 and
+    // -0.9 is rounded to -1
+    double val = m_adjust->value;
+    return (int)(val < 0 ? val - 0.5 : val + 0.5);
 }
 
 void wxSlider::SetValue( int value )
@@ -240,49 +239,17 @@ int wxSlider::GetLineSize() const
     return 0;
 }
 
-void wxSlider::SetTick( int WXUNUSED(tickPos) )
-{
-}
-
-void wxSlider::SetTickFreq( int WXUNUSED(n), int WXUNUSED(pos) )
-{
-}
-
-int wxSlider::GetTickFreq() const
-{
-    return 0;
-}
-
-void wxSlider::ClearTicks()
-{
-}
-
-void wxSlider::SetSelection( int WXUNUSED(minPos), int WXUNUSED(maxPos) )
-{
-}
-
-int wxSlider::GetSelEnd() const
-{
-    return 0;
-}
-
-int wxSlider::GetSelStart() const
-{
-    return 0;
-}
-
-void wxSlider::ClearSel()
-{
-}
-
 bool wxSlider::IsOwnGtkWindow( GdkWindow *window )
 {
     GtkRange *range = GTK_RANGE(m_widget);
-    return ( (window == GTK_WIDGET(range)->window) ||
-             (window == range->trough) ||
-             (window == range->slider) ||
-             (window == range->step_forw) ||
-             (window == range->step_back) );
+    return ( (window == GTK_WIDGET(range)->window)
+#ifndef __WXGTK20__
+                || (window == range->trough)
+                || (window == range->slider)
+                || (window == range->step_forw)
+                || (window == range->step_back)
+#endif // GTK+ 1.x
+           );
 }
 
 void wxSlider::ApplyWidgetStyle()