Fox around a bug in GTK's GtkNotebook

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

diff --git a/src/gtk/scrolbar.cpp b/src/gtk/scrolbar.cpp
index cb0d32c002ace2f9c9be2f7ee14dcb6788d5aa48..5c9ddc9eb554b0439d3ba5adc7c4b63dad8cabf0 100644 (file)
--- a/src/gtk/scrolbar.cpp
+++ b/src/gtk/scrolbar.cpp
@@ -2,9 +2,8 @@
 // Name:        scrolbar.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Name:        scrolbar.cpp
 // Purpose:
 // Author:      Robert Roebling

-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling

 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 


@@ -15,202 +14,299 @@
 
 #include "wx/scrolbar.h"
 #include "wx/utils.h"
 
 #include "wx/scrolbar.h"
 #include "wx/utils.h"

+#include <math.h>
+
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"

 
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------

-// wxScrollBar
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+
+//-----------------------------------------------------------------------------
+// data

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win )
+extern bool   g_blockEventsOnDrag;
+extern bool   g_blockEventsOnScroll;
+
+//-----------------------------------------------------------------------------
+// "value_changed"
+//-----------------------------------------------------------------------------
+
+static void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win )

 { 
 { 

-/*
-  printf( "OnScroll from " );
-  if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
-    printf( win->GetClassInfo()->GetClassName() );
-  printf( ".\n" );
-*/
-  
-  if (!win->HasVMT()) return;
+    if (g_isIdle) wxapp_install_idle_handler();
+
+    if (!win->HasVMT()) return;
+    if (g_blockEventsOnDrag) return;

     
     

-  float diff = win->m_adjust->value - win->m_oldPos;
-  if (fabs(diff) < 0.2) return;
+    float diff = win->m_adjust->value - win->m_oldPos;
+    if (fabs(diff) < 0.2) return;
+    win->m_oldPos = win->m_adjust->value;

   
   

-  int command = 0;
+    wxEventType command = wxEVT_NULL;

   
   

-  float line_step = win->m_adjust->step_increment;
-  float page_step = win->m_adjust->page_increment;
+    float line_step = win->m_adjust->step_increment;
+    float page_step = win->m_adjust->page_increment;

   
   

-  if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN;
-  else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP;
-  else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN;
-  else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP;
-  else command = wxEVT_SCROLL_THUMBTRACK;
+    if (win->m_isScrolling)
+    {
+        command = wxEVT_SCROLL_THUMBTRACK;
+    }
+    else
+    {
+        if (fabs(win->m_adjust->value-win->m_adjust->lower) < 0.2) command = wxEVT_SCROLL_BOTTOM;
+        else if (fabs(win->m_adjust->value-win->m_adjust->upper) < 0.2) command = wxEVT_SCROLL_TOP;
+        else if (fabs(diff-line_step) < 0.2) command = wxEVT_SCROLL_LINEDOWN;
+        else if (fabs(diff+line_step) < 0.2) command = wxEVT_SCROLL_LINEUP;
+        else if (fabs(diff-page_step) < 0.2) command = wxEVT_SCROLL_PAGEDOWN;
+        else if (fabs(diff+page_step) < 0.2) command = wxEVT_SCROLL_PAGEUP;
+        else command = wxEVT_SCROLL_THUMBTRACK;
+    }

 
 

-  int value = (int)(win->m_adjust->value+0.5);
+    int value = (int)(win->m_adjust->value+0.5);

       
       

-  int orient = wxHORIZONTAL;
-  if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxHORIZONTAL;
+    int orient = wxHORIZONTAL;
+    if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxVERTICAL;

   
   

-  wxScrollEvent event( command, win->GetId(), value, orient );
-  event.SetEventObject( win );
-  win->ProcessEvent( event );
+    wxScrollEvent event( command, win->GetId(), value, orient );
+    event.SetEventObject( win );
+    win->GetEventHandler()->ProcessEvent( event );

   
 /*
   
 /*

-  wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() );
-  cevent.SetEventObject( win );
-  win->ProcessEvent( cevent );
+    wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() );
+    cevent.SetEventObject( win );
+    win->ProcessEvent( cevent );

 */
 */

-};
+}

 
 

-IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl)
+//-----------------------------------------------------------------------------
+// "button_press_event" from slider
+//-----------------------------------------------------------------------------

 
 

-wxScrollBar::wxScrollBar(wxWindow *parent, const wxWindowID id,
-           const wxPoint& pos, const wxSize& size,
-           const long style, const wxString& name )
+static gint gtk_scrollbar_button_press_callback( GtkRange *WXUNUSED(widget), 
+                                                 GdkEventButton *WXUNUSED(gdk_event), 
+                                                wxScrollBar *win )
+{
+    if (g_isIdle) wxapp_install_idle_handler();
+
+    win->m_isScrolling = TRUE;
+//  g_blockEventsOnScroll = TRUE;  doesn't work in DialogEd
+  
+    return FALSE;
+}
+
+//-----------------------------------------------------------------------------
+// "button_release_event" from slider
+//-----------------------------------------------------------------------------
+
+static gint gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget), 
+                                                   GdkEventButton *WXUNUSED(gdk_event), 
+                                                  wxScrollBar *win )

 {
 {

-  Create( parent, id, pos, size, style, name );
-};
+    if (g_isIdle) wxapp_install_idle_handler();
+
+    win->m_isScrolling = FALSE;
+//  g_blockEventsOnScroll = FALSE;
+  
+    gtk_signal_emit_by_name( GTK_OBJECT(win->m_adjust), "value_changed" );
+      
+    return FALSE;
+}
+
+//-----------------------------------------------------------------------------
+// wxScrollBar
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl)

 
 wxScrollBar::~wxScrollBar(void)
 {
 
 wxScrollBar::~wxScrollBar(void)
 {

-};
+}

 
 

-bool wxScrollBar::Create(wxWindow *parent, const wxWindowID id,
+bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,

            const wxPoint& pos, const wxSize& size,
            const wxPoint& pos, const wxSize& size,

-           const long style, const wxString& name )
+           long style, const wxValidator& validator, const wxString& name )

 {
 {

-  m_needParent = TRUE;
+    m_needParent = TRUE;
+    m_acceptsFocus = TRUE;

   
   

-  PreCreation( parent, id, pos, size, style, name );
+    PreCreation( parent, id, pos, size, style, name );

   
   

-  m_oldPos = 0.0;
+    SetValidator( validator );
+
+    m_oldPos = 0.0;

 
 

-  if (style & wxSB_VERTICAL == wxSB_VERTICAL)
-    m_widget = gtk_hscrollbar_new( NULL );
-  else
-    m_widget = gtk_vscrollbar_new( NULL );
+    if (style & wxSB_VERTICAL == wxSB_VERTICAL)
+        m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
+    else
+        m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL );

     
     

-  m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
+    m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
+  
+    gtk_signal_connect( GTK_OBJECT(m_adjust), 
+                        "value_changed",
+                       (GtkSignalFunc) gtk_scrollbar_callback, 
+                       (gpointer) this );

   
   

-  gtk_signal_connect (GTK_OBJECT (m_adjust), "value_changed",
-                     (GtkSignalFunc) gtk_scrollbar_callback, (gpointer) this );
+    gtk_signal_connect( GTK_OBJECT(m_widget), 
+                        "button_press_event",
+                        (GtkSignalFunc)gtk_scrollbar_button_press_callback, 
+                       (gpointer) this );
+
+    gtk_signal_connect( GTK_OBJECT(m_widget), 
+                        "button_release_event",
+                        (GtkSignalFunc)gtk_scrollbar_button_release_callback, 
+                       (gpointer) this );
+
+    m_parent->AddChild( this );
+
+    (m_parent->m_insertCallback)( m_parent, this );

   
   

-  PostCreation();
+    PostCreation();

   
   

-  Show( TRUE );
+    SetBackgroundColour( parent->GetBackgroundColour() );
+
+    Show( TRUE );

     
     

-  return TRUE;
-};
+    return TRUE;
+}

 
 

-int wxScrollBar::GetPosition(void) const
+int wxScrollBar::GetThumbPosition(void) const

 {
 {

-  return (int)(m_adjust->value+0.5);
-};
+    return (int)(m_adjust->value+0.5);
+}

 
 int wxScrollBar::GetThumbSize() const
 {
 
 int wxScrollBar::GetThumbSize() const
 {

-  return (int)(m_adjust->page_size+0.5);
-};
+    return (int)(m_adjust->page_size+0.5);
+}

 
 int wxScrollBar::GetPageSize() const
 {
 
 int wxScrollBar::GetPageSize() const
 {

-  return (int)(m_adjust->page_increment+0.5);
-};
+    return (int)(m_adjust->page_increment+0.5);
+}

 
 int wxScrollBar::GetRange() const
 {
 
 int wxScrollBar::GetRange() const
 {

-  return (int)(m_adjust->upper+0.5);
-};
+    return (int)(m_adjust->upper+0.5);
+}

 
 

-void wxScrollBar::SetPosition( const int viewStart )
+void wxScrollBar::SetThumbPosition( int viewStart )

 {
 {

-  float fpos = (float)viewStart;
-  m_oldPos = fpos;
-  if (fabs(fpos-m_adjust->value) < 0.2) return;
-  m_adjust->value = fpos;
+    if (m_isScrolling) return;
+  
+    float fpos = (float)viewStart;
+    m_oldPos = fpos;
+    if (fabs(fpos-m_adjust->value) < 0.2) return;
+    m_adjust->value = fpos;

   
   

-  gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
-};
+    gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
+}

 
 

-void wxScrollBar::SetScrollbar( const int position, const int thumbSize, const int range, const int pageSize,
-      const bool WXUNUSED(refresh) )
+void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize,
+      bool WXUNUSED(refresh) )

 {
 {

-  float fpos = (float)position;
-  m_oldPos = fpos;
-  float frange = (float)range;
-  float fthumb = (float)thumbSize;
-  float fpage = (float)pageSize;
-      
-  if ((fabs(fpos-m_adjust->value) < 0.2) &&
-      (fabs(frange-m_adjust->upper) < 0.2) &&
-      (fabs(fthumb-m_adjust->page_size) < 0.2) &&
-      (fabs(fpage-m_adjust->page_increment) < 0.2))
-      return;
+    float fpos = (float)position;
+    float frange = (float)range;
+    float fthumb = (float)thumbSize;
+    float fpage = (float)pageSize;

       
       

-  m_adjust->lower = 0.0;
-  m_adjust->upper = frange;
-  m_adjust->value = fpos;
-  m_adjust->step_increment = 1.0;
-  m_adjust->page_increment = (float)(wxMax(fpage-2,0));
-  m_adjust->page_size = fthumb;
+    if ((fabs(frange-m_adjust->upper) < 0.2) &&
+        (fabs(fthumb-m_adjust->page_size) < 0.2) &&
+        (fabs(fpage-m_adjust->page_increment) < 0.2))
+    {
+        SetThumbPosition( position );
+        return;
+    }
+  
+    m_oldPos = fpos;
+  
+    m_adjust->lower = 0.0;
+    m_adjust->upper = frange;
+    m_adjust->value = fpos;
+    m_adjust->step_increment = 1.0;
+    m_adjust->page_increment = (float)(wxMax(fpage,0));
+    m_adjust->page_size = fthumb;

 
 

-  gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
-};
+    gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
+}

 
 

-// Backward compatibility
+/* Backward compatibility */

 int wxScrollBar::GetValue(void) const
 {
 int wxScrollBar::GetValue(void) const
 {

-  return GetPosition();
-};
+    return GetThumbPosition();
+}

 
 

-void wxScrollBar::SetValue( const int viewStart )
+void wxScrollBar::SetValue( int viewStart )

 {
 {

-  SetPosition( viewStart );
-};
+    SetThumbPosition( viewStart );
+}

 
 void wxScrollBar::GetValues( int *viewStart, int *viewLength, int *objectLength, int *pageLength ) const
 {
 
 void wxScrollBar::GetValues( int *viewStart, int *viewLength, int *objectLength, int *pageLength ) const
 {

-  int pos = (int)(m_adjust->value+0.5);
-  int thumb = (int)(m_adjust->page_size+0.5);
-  int page = (int)(m_adjust->page_increment+0.5);
-  int range = (int)(m_adjust->upper+0.5);
+    int pos = (int)(m_adjust->value+0.5);
+    int thumb = (int)(m_adjust->page_size+0.5);
+    int page = (int)(m_adjust->page_increment+0.5);
+    int range = (int)(m_adjust->upper+0.5);

   
   

-  *viewStart = pos;
-  *viewLength = range;
-  *objectLength = thumb;
-  *pageLength = page;
-};
+    *viewStart = pos;
+    *viewLength = range;
+    *objectLength = thumb;
+    *pageLength = page;
+}

 
 int wxScrollBar::GetViewLength() const
 {
 
 int wxScrollBar::GetViewLength() const
 {

-  return (int)(m_adjust->upper+0.5);
-};
+    return (int)(m_adjust->upper+0.5);
+}

 
 int wxScrollBar::GetObjectLength() const
 {
 
 int wxScrollBar::GetObjectLength() const
 {

-  return (int)(m_adjust->page_size+0.5);
-};
+    return (int)(m_adjust->page_size+0.5);
+}
+
+void wxScrollBar::SetPageSize( int pageLength )
+{
+    int pos = (int)(m_adjust->value+0.5);
+    int thumb = (int)(m_adjust->page_size+0.5);
+    int range = (int)(m_adjust->upper+0.5);
+    SetScrollbar( pos, thumb, range, pageLength );
+}
+
+void wxScrollBar::SetObjectLength( int objectLength )
+{
+    int pos = (int)(m_adjust->value+0.5);
+    int page = (int)(m_adjust->page_increment+0.5);
+    int range = (int)(m_adjust->upper+0.5);
+    SetScrollbar( pos, objectLength, range, page );
+}

 
 

-void wxScrollBar::SetPageSize( const int pageLength )
+void wxScrollBar::SetViewLength( int viewLength )

 {
 {

-  int pos = (int)(m_adjust->value+0.5);
-  int thumb = (int)(m_adjust->page_size+0.5);
-  int range = (int)(m_adjust->upper+0.5);
-  SetScrollbar( pos, thumb, range, pageLength );
-};
+    int pos = (int)(m_adjust->value+0.5);
+    int thumb = (int)(m_adjust->page_size+0.5);
+    int page = (int)(m_adjust->page_increment+0.5);
+    SetScrollbar( pos, thumb, viewLength, page );
+}

 
 

-void wxScrollBar::SetObjectLength( const int objectLength )
+bool wxScrollBar::IsOwnGtkWindow( GdkWindow *window )

 {
 {

-  int pos = (int)(m_adjust->value+0.5);
-  int page = (int)(m_adjust->page_increment+0.5);
-  int range = (int)(m_adjust->upper+0.5);
-  SetScrollbar( pos, objectLength, range, page );
-};
+    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) );
+}

 
 

-void wxScrollBar::SetViewLength( const int viewLength )
+void wxScrollBar::ApplyWidgetStyle()

 {
 {

-  int pos = (int)(m_adjust->value+0.5);
-  int thumb = (int)(m_adjust->page_size+0.5);
-  int page = (int)(m_adjust->page_increment+0.5);
-  SetScrollbar( pos, thumb, viewLength, page );
-};
+    SetWidgetStyle();
+    gtk_widget_set_style( m_widget, m_widgetStyle );
+}