Added chapter on collection and container classes to contents

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

diff --git a/src/gtk/slider.cpp b/src/gtk/slider.cpp
index 5d115ba3b87651642e5bc06a620f8110a31d909a..838a5d2549b0ed95c6ceb645bafc25d27f54543f 100644 (file)
--- a/src/gtk/slider.cpp
+++ b/src/gtk/slider.cpp
@@ -16,10 +16,11 @@
 #if wxUSE_SLIDER
 
 #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
@@ -34,45 +35,45 @@ extern bool g_isIdle;
 
 extern bool   g_blockEventsOnDrag;
 
+static const float sensitivity = 0.02;
+
 //-----------------------------------------------------------------------------
 // "value_changed"
 //-----------------------------------------------------------------------------
 
-static void gtk_slider_callback( GtkWidget *WXUNUSED(widget), wxSlider *win )
-{ 
+static void gtk_slider_callback( GtkAdjustment *adjust, wxSlider *win )
+{
     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;
-    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 (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)ceil(win->m_adjust->value);
-      
+
+    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;
+
+    int value = (int)ceil(adjust->value);
+
     int orient = wxHORIZONTAL;
-    if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxVERTICAL;
-  
+    if ( (win->GetWindowStyleFlag() & wxSB_VERTICAL) == wxSB_VERTICAL)
+        orient = wxVERTICAL;
+
     wxScrollEvent event( command, win->GetId(), value, orient );
     event.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( event );
-  
+
     wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, win->GetId() );
     cevent.SetEventObject( win );
+    cevent.SetInt( value );
     win->GetEventHandler()->ProcessEvent( cevent );
 }
 
@@ -82,14 +83,6 @@ static void gtk_slider_callback( GtkWidget *WXUNUSED(widget), wxSlider *win )
 
 IMPLEMENT_DYNAMIC_CLASS(wxSlider,wxControl)
 
-wxSlider::wxSlider(void)
-{
-}
-
-wxSlider::~wxSlider(void)
-{
-}
-
 bool wxSlider::Create(wxWindow *parent, wxWindowID id,
         int value, int minValue, int maxValue,
         const wxPoint& pos, const wxSize& size,
@@ -97,12 +90,12 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
 {
     m_acceptsFocus = TRUE;
     m_needParent = TRUE;
-  
+
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {
-        wxFAIL_MSG( _T("wxSlider creation failed") );
-       return FALSE;
+        wxFAIL_MSG( wxT("wxSlider creation failed") );
+           return FALSE;
     }
 
     m_oldPos = 0.0;
@@ -111,11 +104,12 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
         m_widget = gtk_vscale_new( (GtkAdjustment *) NULL );
     else
         m_widget = gtk_hscale_new( (GtkAdjustment *) NULL );
-    
+
     if (style & wxSL_LABELS)
     {
         gtk_scale_set_draw_value( GTK_SCALE( m_widget ), TRUE );
-        
+           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 */
         if (style & wxSL_VERTICAL)
@@ -141,27 +135,27 @@ bool wxSlider::Create(wxWindow *parent, wxWindowID id,
         gtk_scale_set_draw_value( GTK_SCALE( m_widget ), FALSE );
 
     m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
-  
-    gtk_signal_connect( GTK_OBJECT(m_adjust), 
+
+    gtk_signal_connect( GTK_OBJECT(m_adjust),
                         "value_changed",
-                        (GtkSignalFunc) gtk_slider_callback, 
+                        (GtkSignalFunc) gtk_slider_callback,
                         (gpointer) this );
-        
+
     SetRange( minValue, maxValue );
     SetValue( value );
-  
+
     m_parent->DoAddChild( this );
-  
+
     PostCreation();
-  
+
     SetBackgroundColour( parent->GetBackgroundColour() );
 
     Show( TRUE );
-    
+
     return TRUE;
 }
 
-int wxSlider::GetValue(void) const
+int wxSlider::GetValue() const
 {
     return (int)(m_adjust->value+0.5);
 }
@@ -171,9 +165,9 @@ void wxSlider::SetValue( int value )
     float fpos = (float)value;
     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" );
 }
 
@@ -181,25 +175,27 @@ void wxSlider::SetRange( int minValue, int maxValue )
 {
     float fmin = (float)minValue;
     float fmax = (float)maxValue;
-      
+
     if ((fabs(fmin-m_adjust->lower) < 0.2) &&
         (fabs(fmax-m_adjust->upper) < 0.2))
     {
         return;
     }
-      
+
     m_adjust->lower = fmin;
     m_adjust->upper = fmax;
+    m_adjust->step_increment = 1.0;
+    m_adjust->page_increment = ceil((fmax-fmin) / 10.0);
 
     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 }
 
-int wxSlider::GetMin(void) const
+int wxSlider::GetMin() const
 {
     return (int)ceil(m_adjust->lower);
 }
 
-int wxSlider::GetMax(void) const
+int wxSlider::GetMax() const
 {
     return (int)ceil(m_adjust->upper);
 }
@@ -207,15 +203,15 @@ int wxSlider::GetMax(void) const
 void wxSlider::SetPageSize( int pageSize )
 {
     float fpage = (float)pageSize;
-      
+
     if (fabs(fpage-m_adjust->page_increment) < 0.2) return;
-      
+
     m_adjust->page_increment = fpage;
 
     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 }
 
-int wxSlider::GetPageSize(void) const
+int wxSlider::GetPageSize() const
 {
     return (int)ceil(m_adjust->page_increment);
 }
@@ -223,15 +219,15 @@ int wxSlider::GetPageSize(void) const
 void wxSlider::SetThumbLength( int len )
 {
     float flen = (float)len;
-      
+
     if (fabs(flen-m_adjust->page_size) < 0.2) return;
-      
+
     m_adjust->page_size = flen;
 
     gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
 }
 
-int wxSlider::GetThumbLength(void) const
+int wxSlider::GetThumbLength() const
 {
     return (int)ceil(m_adjust->page_size);
 }
@@ -240,7 +236,7 @@ void wxSlider::SetLineSize( int WXUNUSED(lineSize) )
 {
 }
 
-int wxSlider::GetLineSize(void) const
+int wxSlider::GetLineSize() const
 {
     return 0;
 }
@@ -253,12 +249,12 @@ void wxSlider::SetTickFreq( int WXUNUSED(n), int WXUNUSED(pos) )
 {
 }
 
-int wxSlider::GetTickFreq(void) const
+int wxSlider::GetTickFreq() const
 {
     return 0;
 }
 
-void wxSlider::ClearTicks(void)
+void wxSlider::ClearTicks()
 {
 }
 
@@ -266,17 +262,17 @@ void wxSlider::SetSelection( int WXUNUSED(minPos), int WXUNUSED(maxPos) )
 {
 }
 
-int wxSlider::GetSelEnd(void) const
+int wxSlider::GetSelEnd() const
 {
     return 0;
 }
 
-int wxSlider::GetSelStart(void) const
+int wxSlider::GetSelStart() const
 {
     return 0;
 }
 
-void wxSlider::ClearSel(void)
+void wxSlider::ClearSel()
 {
 }