// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-
#ifdef __GNUG__
#pragma implementation "slider.h"
#endif
#include "wx/slider.h"
+
+#if wxUSE_SLIDER
+
#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
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
+static const float sensitivity = 0.02;
+
//-----------------------------------------------------------------------------
// "value_changed"
//-----------------------------------------------------------------------------
-static void gtk_slider_callback( GtkWidget *WXUNUSED(widget), wxSlider *win )
-{
- if (!win->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 (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 orient = wxHORIZONTAL;
- if (win->GetWindowStyleFlag() & wxSB_VERTICAL == wxSB_VERTICAL) orient = wxVERTICAL;
-
- wxScrollEvent event( command, win->GetId(), value, orient );
- event.SetEventObject( win );
- win->ProcessEvent( event );
-
- wxCommandEvent cevent( wxEVT_COMMAND_SLIDER_UPDATED, win->GetId() );
- cevent.SetEventObject( win );
- win->ProcessEvent( cevent );
+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 = 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;
+
+ 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 );
}
//-----------------------------------------------------------------------------
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,
long style, const wxValidator& validator, const wxString& name )
{
- m_needParent = TRUE;
-
- PreCreation( parent, id, pos, size, style, name );
-
- SetValidator( validator );
-
- m_oldPos = 0.0;
-
- if (style & wxSL_VERTICAL == wxSL_VERTICAL)
- m_widget = gtk_hscale_new( (GtkAdjustment *) NULL );
- else
- m_widget = gtk_vscale_new( (GtkAdjustment *) NULL );
-
- 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), "value_changed",
- (GtkSignalFunc) gtk_slider_callback, (gpointer) this );
- SetRange( minValue, maxValue );
- SetValue( value );
-
- PostCreation();
-
- SetBackgroundColour( parent->GetBackgroundColour() );
- SetForegroundColour( parent->GetForegroundColour() );
-
- Show( TRUE );
-
- return TRUE;
+ m_acceptsFocus = TRUE;
+ m_needParent = TRUE;
+
+ if (!PreCreation( parent, pos, size ) ||
+ !CreateBase( parent, id, pos, size, style, validator, name ))
+ {
+ wxFAIL_MSG( wxT("wxSlider creation failed") );
+ return FALSE;
+ }
+
+ m_oldPos = 0.0;
+
+ if (style & wxSL_VERTICAL)
+ 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)
+ {
+ wxSize sz( size );
+ if (sz.x < 35)
+ {
+ sz.x = 35;
+ SetSize( sz );
+ }
+ }
+ else
+ {
+ wxSize sz( size );
+ if (sz.y < 35)
+ {
+ sz.y = 35;
+ SetSize( sz );
+ }
+ }
+ }
+ else
+ 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),
+ "value_changed",
+ (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);
+ // we want to round to the nearest integer, i.e. 0.9 is rounded to 1 and
+ // -0.9 is rounded to -1
+ double val = m_adjust->value;
+ return (int)(val >= 0 ? val - 0.5 : val + 0.5);
}
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" );
+ 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" );
}
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;
+ 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" );
+ gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
}
-int wxSlider::GetMin(void) const
+int wxSlider::GetMin() const
{
- return (int)(m_adjust->lower+0.5);
+ return (int)ceil(m_adjust->lower);
}
-int wxSlider::GetMax(void) const
+int wxSlider::GetMax() const
{
- return (int)(m_adjust->upper+0.5);
+ return (int)ceil(m_adjust->upper);
}
void wxSlider::SetPageSize( int pageSize )
{
- float fpage = (float)pageSize;
-
- if (fabs(fpage-m_adjust->page_increment) < 0.2) return;
-
- m_adjust->page_increment = fpage;
+ 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" );
+ gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
}
-int wxSlider::GetPageSize(void) const
+int wxSlider::GetPageSize() const
{
- return (int)(m_adjust->page_increment+0.5);
+ return (int)ceil(m_adjust->page_increment);
}
void wxSlider::SetThumbLength( int len )
{
- float flen = (float)len;
-
- if (fabs(flen-m_adjust->page_size) < 0.2) return;
-
- m_adjust->page_size = flen;
+ float flen = (float)len;
- gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" );
+ 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)(m_adjust->page_size+0.5);
+ return (int)ceil(m_adjust->page_size);
}
void wxSlider::SetLineSize( int WXUNUSED(lineSize) )
{
}
-int wxSlider::GetLineSize(void) const
+int wxSlider::GetLineSize() const
{
- return 0;
+ return 0;
}
void wxSlider::SetTick( int WXUNUSED(tickPos) )
{
}
-int wxSlider::GetTickFreq(void) const
+int wxSlider::GetTickFreq() const
{
- return 0;
+ return 0;
}
-void wxSlider::ClearTicks(void)
+void wxSlider::ClearTicks()
{
}
{
}
-int wxSlider::GetSelEnd(void) const
+int wxSlider::GetSelEnd() const
{
- return 0;
+ return 0;
}
-int wxSlider::GetSelStart(void) const
+int wxSlider::GetSelStart() const
{
- return 0;
+ return 0;
}
-void wxSlider::ClearSel(void)
+void wxSlider::ClearSel()
{
}
bool wxSlider::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 wxSlider::ApplyWidgetStyle()
{
- SetWidgetStyle();
- gtk_widget_set_style( m_widget, m_widgetStyle );
+ SetWidgetStyle();
+ gtk_widget_set_style( m_widget, m_widgetStyle );
}
+
+#endif
projects / wxWidgets.git / blobdiff