src/motif/slider.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/slider.cpp
   3 // Purpose:     wxSlider
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_SLIDER
  16
  17 #include "wx/slider.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/utils.h"
  21 #endif
  22
  23 #ifdef __VMS__
  24 #pragma message disable nosimpint
  25 #endif
  26 #include <Xm/Xm.h>
  27 #include <Xm/Label.h>
  28 #include <Xm/LabelG.h>
  29 #include <Xm/RowColumn.h>
  30 #include <Xm/Scale.h>
  31 #ifdef __VMS__
  32 #pragma message enable nosimpint
  33 #endif
  34
  35 #include "wx/motif/private.h"
  36
  37 static void wxSliderCallback (Widget widget, XtPointer clientData, XmScaleCallbackStruct * cbs);
  38
  39 IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl)
  40
  41 BEGIN_EVENT_TABLE(wxSlider, wxControl)
  42 END_EVENT_TABLE()
  43
  44
  45
  46 // Slider
  47 wxSlider::wxSlider()
  48 {
  49     m_pageSize = 1;
  50     m_lineSize = 1;
  51     m_rangeMax = 0;
  52     m_rangeMin = 0;
  53 }
  54
  55 bool wxSlider::Create(wxWindow *parent, wxWindowID id,
  56                       int value, int minValue, int maxValue,
  57                       const wxPoint& pos,
  58                       const wxSize& size, long style,
  59                       const wxValidator& validator,
  60                       const wxString& name)
  61 {
  62     if ( !((style & wxSL_HORIZONTAL) || (style & wxSL_VERTICAL)) )
  63          style |= wxSL_HORIZONTAL;
  64
  65     if( !CreateControl( parent, id, pos, size, style, validator, name ) )
  66         return false;
  67     PreCreation();
  68
  69     m_lineSize = 1;
  70     m_windowStyle = style;
  71
  72     m_rangeMax = maxValue;
  73     m_rangeMin = minValue;
  74
  75     // Not used in Motif, I think
  76     m_pageSize = (int)((maxValue-minValue)/10);
  77
  78     Widget parentWidget = (Widget) parent->GetClientWidget();
  79
  80     Widget sliderWidget = XtVaCreateManagedWidget ("sliderWidget",
  81         xmScaleWidgetClass, parentWidget,
  82         XmNorientation,
  83         (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmVERTICAL : XmHORIZONTAL),
  84         XmNprocessingDirection,
  85         (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmMAX_ON_TOP : XmMAX_ON_RIGHT),
  86         XmNmaximum, maxValue,
  87         XmNminimum, minValue,
  88         XmNvalue, value,
  89         XmNshowValue, True,
  90         NULL);
  91
  92     m_mainWidget = (WXWidget) sliderWidget;
  93
  94     XtAddCallback (sliderWidget, XmNvalueChangedCallback, (XtCallbackProc) wxSliderCallback, (XtPointer) this);
  95     XtAddCallback (sliderWidget, XmNdragCallback, (XtCallbackProc) wxSliderCallback, (XtPointer) this);
  96
  97     PostCreation();
  98     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
  99
 100     return true;
 101 }
 102
 103 wxSlider::~wxSlider()
 104 {
 105 }
 106
 107 int wxSlider::GetValue() const
 108 {
 109     int val;
 110     XtVaGetValues ((Widget) m_mainWidget, XmNvalue, &val, NULL);
 111     return val;
 112 }
 113
 114 void wxSlider::SetValue(int value)
 115 {
 116     XtVaSetValues ((Widget) m_mainWidget, XmNvalue, value, NULL);
 117 }
 118
 119 void wxSlider::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 120 {
 121     Widget widget = (Widget) m_mainWidget;
 122
 123     bool managed = XtIsManaged(widget);
 124
 125     if (managed)
 126         XtUnmanageChild (widget);
 127
 128     if (((m_windowStyle & wxHORIZONTAL) == wxHORIZONTAL) && (width > -1))
 129     {
 130         XtVaSetValues (widget, XmNscaleWidth, wxMax (width, 10), NULL);
 131     }
 132
 133     if (((m_windowStyle & wxVERTICAL) == wxVERTICAL) && (height > -1))
 134     {
 135         XtVaSetValues (widget, XmNscaleHeight, wxMax (height, 10), NULL);
 136     }
 137
 138     int xx = x; int yy = y;
 139     AdjustForParentClientOrigin(xx, yy, sizeFlags);
 140
 141     if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 142         XtVaSetValues (widget, XmNx, xx, NULL);
 143     if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 144         XtVaSetValues (widget, XmNy, yy, NULL);
 145
 146     if (managed)
 147         XtManageChild (widget);
 148 }
 149
 150 void wxSlider::SetRange(int minValue, int maxValue)
 151 {
 152     m_rangeMin = minValue;
 153     m_rangeMax = maxValue;
 154
 155     XtVaSetValues ((Widget) m_mainWidget, XmNminimum, minValue, XmNmaximum, maxValue, NULL);
 156 }
 157
 158 // For trackbars only
 159 void wxSlider::SetPageSize(int pageSize)
 160 {
 161     // Not implemented in Motif
 162     m_pageSize = pageSize;
 163 }
 164
 165 int wxSlider::GetPageSize() const
 166 {
 167     return m_pageSize;
 168 }
 169
 170 void wxSlider::SetLineSize(int lineSize)
 171 {
 172     // Not implemented in Motif
 173     m_lineSize = lineSize;
 174 }
 175
 176 int wxSlider::GetLineSize() const
 177 {
 178     // Not implemented in Motif
 179     return m_lineSize;
 180 }
 181
 182 void wxSlider::SetThumbLength(int WXUNUSED(len))
 183 {
 184     // Not implemented in Motif (?)
 185 }
 186
 187 int wxSlider::GetThumbLength() const
 188 {
 189     // Not implemented in Motif (?)
 190     return 0;
 191 }
 192
 193 void wxSlider::Command (wxCommandEvent & event)
 194 {
 195     SetValue (event.GetInt());
 196     ProcessCommand (event);
 197 }
 198
 199 void wxSliderCallback (Widget widget, XtPointer clientData,
 200                        XmScaleCallbackStruct * cbs)
 201 {
 202     wxSlider *slider = (wxSlider *) clientData;
 203     wxEventType scrollEvent;
 204
 205     switch (cbs->reason)
 206     {
 207     case XmCR_VALUE_CHANGED:
 208         scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 209         break;
 210
 211     case XmCR_DRAG:
 212         scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 213         break;
 214
 215     default:
 216         return;
 217     }
 218
 219     wxScrollEvent event(scrollEvent, slider->GetId());
 220     int commandInt = event.GetInt();
 221     XtVaGetValues (widget, XmNvalue, &commandInt, NULL);
 222     event.SetInt(commandInt);
 223     event.SetEventObject(slider);
 224     slider->GetEventHandler()->ProcessEvent(event);
 225
 226     // Also send a wxCommandEvent for compatibility.
 227     wxCommandEvent event2(wxEVT_COMMAND_SLIDER_UPDATED, slider->GetId());
 228     event2.SetEventObject(slider);
 229     event2.SetInt( event.GetInt() );
 230     slider->GetEventHandler()->ProcessEvent(event2);
 231 }
 232
 233 #endif // wxUSE_SLIDER