X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b292e2f512fa9b25e2d2928604ab884b00e6c6bf..ef3a5e0aae003c29941c7d41ed6becea4287752d:/src/gtk/scrolbar.cpp?ds=inline

diff --git a/src/gtk/scrolbar.cpp b/src/gtk/scrolbar.cpp
index c0d729487d..df1cba34af 100644
--- a/src/gtk/scrolbar.cpp
+++ b/src/gtk/scrolbar.cpp
@@ -1,10 +1,10 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        scrolbar.cpp
+// Name:        src/gtk/scrolbar.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
-// Licence:   	wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 
@@ -12,10 +12,26 @@
 #pragma implementation "scrolbar.h"
 #endif
 
+#include "wx/defs.h"
+
+#if wxUSE_SCROLLBAR
+
 #include "wx/scrolbar.h"
+
 #include "wx/utils.h"
+
 #include <math.h>
 
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+
+//-----------------------------------------------------------------------------
+// idle system
+//-----------------------------------------------------------------------------
+
+extern void wxapp_install_idle_handler();
+extern bool g_isIdle;
+
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
@@ -23,51 +39,45 @@
 extern bool   g_blockEventsOnDrag;
 extern bool   g_blockEventsOnScroll;
 
+static const float sensitivity = 0.02;
+
 //-----------------------------------------------------------------------------
 // "value_changed"
 //-----------------------------------------------------------------------------
 
-static void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win )
+static void gtk_scrollbar_callback( GtkAdjustment *adjust, wxScrollBar *win )
 { 
-  if (!win->HasVMT()) return;
-  if (g_blockEventsOnDrag) return;
+    if (g_isIdle) wxapp_install_idle_handler();
+
+    if (!win->m_hasVMT) return;
+    if (g_blockEventsOnDrag) return;
     
-  float diff = win->m_adjust->value - win->m_oldPos;
-  if (fabs(diff) < 0.2) return;
-  
-  wxEventType command = wxEVT_NULL;
-  
-  float line_step = win->m_adjust->step_increment;
-  float page_step = win->m_adjust->page_increment;
-  
-  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);
+    float diff = adjust->value - win->m_oldPos;
+    if (fabs(diff) < sensitivity) return;
+    
+    win->m_oldPos = adjust->value;
+
+    GtkRange *range = GTK_RANGE( 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 orient = wxHORIZONTAL;
-  if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxVERTICAL;
+    int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
   
-  wxScrollEvent event( command, win->GetId(), value, orient );
-  event.SetEventObject( win );
-  win->GetEventHandler()->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 );
 */
 }
 
@@ -75,14 +85,17 @@ static void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *wi
 // "button_press_event" from slider
 //-----------------------------------------------------------------------------
 
-static gint gtk_scrollbar_button_press_callback( GtkRange *WXUNUSED(widget), 
-                                                 GdkEventButton *WXUNUSED(gdk_event), 
-						 wxScrollBar *win )
+static gint gtk_scrollbar_button_press_callback( GtkRange *widget, 
+                                                 GdkEventButton *gdk_event, 
+                                                 wxScrollBar *win )
 {
-  win->m_isScrolling = TRUE;
+    if (g_isIdle) wxapp_install_idle_handler();
+
 //  g_blockEventsOnScroll = TRUE;  doesn't work in DialogEd
+
+    win->m_isScrolling = (gdk_event->window == widget->slider);
   
-  return FALSE;
+    return FALSE;
 }
 
 //-----------------------------------------------------------------------------
@@ -91,14 +104,26 @@ static gint gtk_scrollbar_button_press_callback( GtkRange *WXUNUSED(widget),
 
 static gint gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget), 
                                                    GdkEventButton *WXUNUSED(gdk_event), 
-						   wxScrollBar *win )
+                                                   wxScrollBar *win )
 {
-  win->m_isScrolling = FALSE;
+    if (g_isIdle) wxapp_install_idle_handler();
+    
 //  g_blockEventsOnScroll = FALSE;
   
-  gtk_signal_emit_by_name( GTK_OBJECT(win->m_adjust), "value_changed" );
+    if (win->m_isScrolling)
+    {
+        wxEventType command = wxEVT_SCROLL_THUMBRELEASE;
+        int value = (int)ceil(win->m_adjust->value);
+        int dir = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
+
+        wxScrollEvent event( command, value, dir );
+        event.SetEventObject( win );
+        win->GetEventHandler()->ProcessEvent( event );
+    }
       
-  return FALSE;
+    win->m_isScrolling = FALSE;
+    
+    return FALSE;
 }
 
 //-----------------------------------------------------------------------------
@@ -107,7 +132,7 @@ static gint gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget),
 
 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl)
 
-wxScrollBar::~wxScrollBar(void)
+wxScrollBar::~wxScrollBar()
 {
 }
 
@@ -115,175 +140,193 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
            const wxPoint& pos, const wxSize& size,
            long style, const wxValidator& validator, const wxString& name )
 {
-  m_needParent = TRUE;
-  m_acceptsFocus = TRUE;
-  
-  PreCreation( parent, id, pos, size, style, name );
+    m_needParent = TRUE;
+    m_acceptsFocus = TRUE;
   
-  SetValidator( validator );
+    if (!PreCreation( parent, pos, size ) ||
+        !CreateBase( parent, id, pos, size, style, validator, name ))
+    {
+        wxFAIL_MSG( wxT("wxScrollBar creation failed") );
+        return FALSE;
+    }
 
-  m_oldPos = 0.0;
+    m_oldPos = 0.0;
 
-  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) );
+    if ((style & wxSB_VERTICAL) == wxSB_VERTICAL)
+        m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL );
+    else
+        m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
+
+    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_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 );
+    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 );
+    m_parent->DoAddChild( this );
   
-  PostCreation();
+    PostCreation();
   
-  SetBackgroundColour( parent->GetBackgroundColour() );
+    SetBackgroundColour( parent->GetBackgroundColour() );
 
-  Show( TRUE );
+    Show( TRUE );
     
-  return TRUE;
+    return TRUE;
 }
 
-int wxScrollBar::GetThumbPosition(void) const
+int wxScrollBar::GetThumbPosition() const
 {
-  return (int)(m_adjust->value+0.5);
+    double val = m_adjust->value;
+    return (int)(val < 0 ? val - 0.5 : val + 0.5);
 }
 
 int wxScrollBar::GetThumbSize() const
 {
-  return (int)(m_adjust->page_size+0.5);
+    return (int)(m_adjust->page_size+0.5);
 }
 
 int wxScrollBar::GetPageSize() const
 {
-  return (int)(m_adjust->page_increment+0.5);
+    return (int)(m_adjust->page_increment+0.5);
 }
 
 int wxScrollBar::GetRange() const
 {
-  return (int)(m_adjust->upper+0.5);
+    return (int)(m_adjust->upper+0.5);
 }
 
 void wxScrollBar::SetThumbPosition( int viewStart )
 {
-  if (m_isScrolling) return;
+    if (m_isScrolling) return;
   
-  float fpos = (float)viewStart;
-  m_oldPos = fpos;
-  if (fabs(fpos-m_adjust->value) < 0.2) return;
-  m_adjust->value = fpos;
+    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_disconnect_by_func( GTK_OBJECT(m_adjust), 
+                        (GtkSignalFunc) gtk_scrollbar_callback, 
+                        (gpointer) this );
+                        
+    gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
+    
+    gtk_signal_connect( GTK_OBJECT(m_adjust), 
+                        "value_changed",
+                        (GtkSignalFunc) gtk_scrollbar_callback, 
+                        (gpointer) this );
 }
 
 void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize,
       bool WXUNUSED(refresh) )
 {
-  float fpos = (float)position;
-  float frange = (float)range;
-  float fthumb = (float)thumbSize;
-  float fpage = (float)pageSize;
+    float fpos = (float)position;
+    float frange = (float)range;
+    float fthumb = (float)thumbSize;
+    float fpage = (float)pageSize;
       
-  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;
-  }
+    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_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" );
+    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" );
 }
 
-// Backward compatibility
-int wxScrollBar::GetValue(void) const
+/* Backward compatibility */
+int wxScrollBar::GetValue() const
 {
-  return GetThumbPosition();
+    return GetThumbPosition();
 }
 
 void wxScrollBar::SetValue( int viewStart )
 {
-  SetThumbPosition( viewStart );
+    SetThumbPosition( viewStart );
 }
 
 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
 {
-  return (int)(m_adjust->upper+0.5);
+    return (int)(m_adjust->upper+0.5);
 }
 
 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 );
+    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 );
+    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::SetViewLength( int viewLength )
 {
-  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 );
+    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 );
 }
 
 bool wxScrollBar::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) );
+    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::ApplyWidgetStyle()
 {
-  SetWidgetStyle();
-  gtk_widget_set_style( m_widget, m_widgetStyle );
+    SetWidgetStyle();
+    gtk_widget_set_style( m_widget, m_widgetStyle );
 }
 
+#endif