// 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
/////////////////////////////////////////////////////////////////////////////
#include "wx/scrolbar.h"
#include "wx/utils.h"
+#include <math.h>
+
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
+extern bool g_blockEventsOnScroll;
//-----------------------------------------------------------------------------
-// wxScrollBar
+// "value_changed"
//-----------------------------------------------------------------------------
static void gtk_scrollbar_callback( GtkWidget *WXUNUSED(widget), wxScrollBar *win )
{
- if (!win->HasVMT()) return;
- if (g_blockEventsOnDrag) return;
+ 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;
- wxEventType command = wxEVT_NULL;
+ 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->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 );
*/
}
+//-----------------------------------------------------------------------------
+// "button_press_event" from slider
+//-----------------------------------------------------------------------------
+
+static gint gtk_scrollbar_button_press_callback( GtkRange *WXUNUSED(widget),
+ GdkEventButton *WXUNUSED(gdk_event),
+ wxScrollBar *win )
+{
+ 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 )
+{
+ 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)
const wxPoint& pos, const wxSize& size,
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 );
- SetValidator( validator );
+ SetValidator( validator );
- 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 );
+ 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 );
- PostCreation();
+ 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();
- 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
{
- 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::SetPosition( 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( 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;
+ float fpos = (float)position;
+ 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;
-
- 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
{
- return GetPosition();
+ return GetThumbPosition();
}
void wxScrollBar::SetValue( int viewStart )
{
- SetPosition( 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) );
+}
+
+void wxScrollBar::ApplyWidgetStyle()
+{
+ SetWidgetStyle();
+ gtk_widget_set_style( m_widget, m_widgetStyle );
}
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