check for wxInputStream::Read errors

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

diff --git a/src/gtk/scrolbar.cpp b/src/gtk/scrolbar.cpp
index f13b47a7560fc9c1cb456f42f97de4554d0d8ee7..0a76b68267b89ad6f71f5b9c79fe803b14276b4c 100644 (file)
--- a/src/gtk/scrolbar.cpp
+++ b/src/gtk/scrolbar.cpp
@@ -32,19 +32,21 @@ gtk_value_changed(GtkRange* range, wxScrollBar* win)
     if (eventType != wxEVT_NULL)
     {
         const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
     if (eventType != wxEVT_NULL)
     {
         const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;

-        const int i = orient == wxVERTICAL;

         const int value = win->GetThumbPosition();
         const int value = win->GetThumbPosition();

-        wxScrollEvent event(eventType, win->GetId(), value, orient);
-        event.SetEventObject(win);
-        win->m_blockValueChanged[i] = true;
-        win->GetEventHandler()->ProcessEvent(event);
+        const int id = win->GetId();
+
+        // first send the specific event for the user action
+        wxScrollEvent evtSpec(eventType, id, value, orient);
+        evtSpec.SetEventObject(win);
+        win->HandleWindowEvent(evtSpec);
+

         if (!win->m_isScrolling)
         {
         if (!win->m_isScrolling)
         {

-            wxScrollEvent event(wxEVT_SCROLL_CHANGED, win->GetId(), value, orient);
-            event.SetEventObject(win);
-            win->GetEventHandler()->ProcessEvent(event);
+            // and if it's over also send a general "changed" event
+            wxScrollEvent evtChanged(wxEVT_SCROLL_CHANGED, id, value, orient);
+            evtChanged.SetEventObject(win);
+            win->HandleWindowEvent(evtChanged);

         }
         }

-        win->m_blockValueChanged[i] = false;

     }
 }
 }
     }
 }
 }


@@ -76,14 +78,15 @@ gtk_event_after(GtkRange* range, GdkEvent* event, wxScrollBar* win)
 
         const int value = win->GetThumbPosition();
         const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
 
         const int value = win->GetThumbPosition();
         const int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;

+        const int id = win->GetId();

 
 

-        wxScrollEvent event(wxEVT_SCROLL_THUMBRELEASE, win->GetId(), value, orient);
-        event.SetEventObject(win);
-        win->GetEventHandler()->ProcessEvent(event);
+        wxScrollEvent evtRel(wxEVT_SCROLL_THUMBRELEASE, id, value, orient);
+        evtRel.SetEventObject(win);
+        win->HandleWindowEvent(evtRel);

 
 

-        wxScrollEvent event2(wxEVT_SCROLL_CHANGED, win->GetId(), value, orient);
-        event2.SetEventObject(win);
-        win->GetEventHandler()->ProcessEvent(event2);
+        wxScrollEvent evtChanged(wxEVT_SCROLL_CHANGED, id, value, orient);
+        evtChanged.SetEventObject(win);
+        win->HandleWindowEvent(evtChanged);

     }
 }
 }
     }
 }
 }


@@ -129,8 +132,6 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
            const wxPoint& pos, const wxSize& size,
            long style, const wxValidator& validator, const wxString& name )
 {
            const wxPoint& pos, const wxSize& size,
            long style, const wxValidator& validator, const wxString& name )
 {

-    m_needParent = true;
-

     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {


@@ -143,10 +144,11 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
         m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL );
     else
         m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
         m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL );
     else
         m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );

+    g_object_ref(m_widget);

 
 

-    m_scrollBar[int(isVertical)] = (GtkRange*)m_widget;
+    m_scrollBar[0] = (GtkRange*)m_widget;

 
 

-    g_signal_connect(m_widget, "value_changed",
+    g_signal_connect_after(m_widget, "value_changed",

                      G_CALLBACK(gtk_value_changed), this);
     g_signal_connect(m_widget, "button_press_event",
                      G_CALLBACK(gtk_button_press_event), this);
                      G_CALLBACK(gtk_value_changed), this);
     g_signal_connect(m_widget, "button_press_event",
                      G_CALLBACK(gtk_button_press_event), this);


@@ -193,21 +195,14 @@ void wxScrollBar::SetThumbPosition( int viewStart )
 {
     if (GetThumbPosition() != viewStart)
     {
 {
     if (GetThumbPosition() != viewStart)
     {

-        GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment;
-        const int i = (GtkRange*)m_widget == m_scrollBar[1];
-        const int max = int(adj->upper - adj->page_size);
-        if (viewStart > max)
-            viewStart = max;
-        if (viewStart < 0)
-            viewStart = 0;
-
-        m_scrollPos[i] =
-        adj->value = viewStart;
-        // If a "value_changed" signal emission is not already in progress
-        if (!m_blockValueChanged[i])
-        {
-            gtk_adjustment_value_changed(adj);
-        }
+        g_signal_handlers_block_by_func(m_widget,
+            (gpointer)gtk_value_changed, this);
+
+        gtk_range_set_value((GtkRange*)m_widget, viewStart);
+        m_scrollPos[0] = gtk_range_get_value((GtkRange*)m_widget);
+
+        g_signal_handlers_unblock_by_func(m_widget,
+            (gpointer)gtk_value_changed, this);

     }
 }
 
     }
 }
 


@@ -219,17 +214,15 @@ void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageS
         range =
         thumbSize = 1;
     }
         range =
         thumbSize = 1;
     }

-    if (position > range - thumbSize)
-        position = range - thumbSize;
-    if (position < 0)
-        position = 0;

     GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment;
     adj->step_increment = 1;
     adj->page_increment = pageSize;
     adj->page_size = thumbSize;
     GtkAdjustment* adj = ((GtkRange*)m_widget)->adjustment;
     adj->step_increment = 1;
     adj->page_increment = pageSize;
     adj->page_size = thumbSize;

-    adj->upper = range;
-    SetThumbPosition(position);
-    gtk_adjustment_changed(adj);
+    adj->value = position;
+    g_signal_handlers_block_by_func(m_widget, (void*)gtk_value_changed, this);
+    gtk_range_set_range((GtkRange*)m_widget, 0, range);
+    m_scrollPos[0] = adj->value;
+    g_signal_handlers_unblock_by_func(m_widget, (void*)gtk_value_changed, this);

 }
 
 void wxScrollBar::SetPageSize( int pageLength )
 }
 
 void wxScrollBar::SetPageSize( int pageLength )