image handlers moved to separate headers (imagbmp.h etc.) This change is backward...

[wxWidgets.git] / src / gtk1 / scrolbar.cpp

diff --git a/src/gtk1/scrolbar.cpp b/src/gtk1/scrolbar.cpp
index 6fd20ff176e28a0824a981341341afaa532f5afd..09888e60cd577040e983b46beb6a9589a77f0f84 100644 (file)
--- a/src/gtk1/scrolbar.cpp
+++ b/src/gtk1/scrolbar.cpp
@@ -13,11 +13,15 @@
 #endif
 
 #include "wx/scrolbar.h"
+
+#if wxUSE_SCROLLBAR
+
 #include "wx/utils.h"
+
 #include <math.h>
 
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
 
 //-----------------------------------------------------------------------------
 // idle system
@@ -33,42 +37,33 @@ extern bool g_isIdle;
 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 (g_isIdle) wxapp_install_idle_handler();
 
-    if (!win->HasVMT()) return;
+    if (!win->m_hasVMT) return;
     if (g_blockEventsOnDrag) return;
     
-    float diff = win->m_adjust->value - win->m_oldPos;
-    if (fabs(diff) < 0.2) return;
-    win->m_oldPos = win->m_adjust->value;
-  
-    wxEventType command = wxEVT_NULL;
-  
-    float line_step = win->m_adjust->step_increment;
-    float page_step = win->m_adjust->page_increment;
-  
-    if (win->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;
-    }
+    float diff = adjust->value - win->m_oldPos;
+    if (fabs(diff) < sensitivity) return;
+    
+    win->m_oldPos = adjust->value;
 
-    int value = (int)(win->m_adjust->value+0.5);
+    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;
+    
+    int value = (int)ceil(adjust->value);
       
     int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL;
   
@@ -134,17 +129,20 @@ bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
     m_needParent = TRUE;
     m_acceptsFocus = TRUE;
   
-    PreCreation( parent, id, pos, size, style, name );
-  
-    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;
 
-    if (style & wxSB_VERTICAL == wxSB_VERTICAL)
-        m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL );
-    else
+    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), 
@@ -307,3 +305,4 @@ void wxScrollBar::ApplyWidgetStyle()
     gtk_widget_set_style( m_widget, m_widgetStyle );
 }
 
+#endif