src/motif/slider.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #ifdef __GNUG__
  13 #pragma implementation "slider.h"
  14 #endif
  15
  16 #include "wx/slider.h"
  17 #include "wx/utils.h"
  18
  19 #include <Xm/Xm.h>
  20 #include <Xm/Label.h>
  21 #include <Xm/LabelG.h>
  22 #include <Xm/RowColumn.h>
  23 #include <Xm/Scale.h>
  24
  25 #include <wx/motif/private.h>
  26
  27 void wxSliderCallback (Widget widget, XtPointer clientData, XmScaleCallbackStruct * cbs);
  28
  29 #if !USE_SHARED_LIBRARY
  30 IMPLEMENT_DYNAMIC_CLASS(wxSlider, wxControl)
  31
  32 BEGIN_EVENT_TABLE(wxSlider, wxControl)
  33 END_EVENT_TABLE()
  34 #endif
  35
  36
  37
  38 // Slider
  39 wxSlider::wxSlider()
  40 {
  41   m_pageSize = 1;
  42   m_lineSize = 1;
  43   m_rangeMax = 0;
  44   m_rangeMin = 0;
  45   m_tickFreq = 0;
  46 }
  47
  48 bool wxSlider::Create(wxWindow *parent, wxWindowID id,
  49            int value, int minValue, int maxValue,
  50            const wxPoint& pos,
  51            const wxSize& size, long style,
  52            const wxValidator& validator,
  53            const wxString& name)
  54 {
  55     SetName(name);
  56     SetValidator(validator);
  57     m_backgroundColour = parent->GetBackgroundColour();
  58     m_foregroundColour = parent->GetForegroundColour();
  59
  60     if (parent) parent->AddChild(this);
  61
  62     m_lineSize = 1;
  63     m_windowStyle = style;
  64     m_tickFreq = 0;
  65
  66     if ( id == -1 )
  67             m_windowId = (int)NewControlId();
  68     else
  69             m_windowId = id;
  70
  71     m_rangeMax = maxValue;
  72     m_rangeMin = minValue;
  73
  74     // Not used in Motif, I think
  75     m_pageSize = (int)((maxValue-minValue)/10);
  76
  77     Widget parentWidget = (Widget) parent->GetClientWidget();
  78
  79     Widget sliderWidget = XtVaCreateManagedWidget ("sliderWidget",
  80                                              xmScaleWidgetClass, parentWidget,
  81                          XmNorientation,
  82            (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmVERTICAL : XmHORIZONTAL),
  83                                          XmNprocessingDirection,
  84            (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmMAX_ON_TOP : XmMAX_ON_RIGHT),
  85                                                  XmNmaximum, maxValue,
  86                                                  XmNminimum, minValue,
  87                                                  XmNvalue, value,
  88                                                  XmNshowValue, True,
  89                                                  NULL);
  90
  91     m_mainWidget = (WXWidget) sliderWidget;
  92
  93     if(style & wxSL_NOTIFY_DRAG)
  94         XtAddCallback (sliderWidget, XmNdragCallback,
  95                    (XtCallbackProc) wxSliderCallback, (XtPointer) this);
  96     else
  97         XtAddCallback (sliderWidget, XmNvalueChangedCallback,
  98                    (XtCallbackProc) wxSliderCallback, (XtPointer) this);
  99
 100     XtAddCallback (sliderWidget, XmNdragCallback, (XtCallbackProc) wxSliderCallback, (XtPointer) this);
 101
 102     SetCanAddEventHandler(TRUE);
 103     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
 104
 105     SetFont(* parent->GetFont());
 106     ChangeBackgroundColour();
 107
 108     return TRUE;
 109 }
 110
 111 wxSlider::~wxSlider()
 112 {
 113 }
 114
 115 int wxSlider::GetValue() const
 116 {
 117     int val;
 118     XtVaGetValues ((Widget) m_mainWidget, XmNvalue, &val, NULL);
 119     return val;
 120 }
 121
 122 void wxSlider::SetValue(int value)
 123 {
 124     XtVaSetValues ((Widget) m_mainWidget, XmNvalue, value, NULL);
 125 }
 126
 127 void wxSlider::GetSize(int *width, int *height) const
 128 {
 129     wxControl::GetSize(width, height);
 130 }
 131
 132 void wxSlider::SetSize(int x, int y, int width, int height, int sizeFlags)
 133 {
 134   Widget widget = (Widget) m_mainWidget;
 135
 136   bool managed = XtIsManaged(widget);
 137
 138   if (managed)
 139     XtUnmanageChild (widget);
 140
 141   if (((m_windowStyle & wxHORIZONTAL) == wxHORIZONTAL) && (width > -1))
 142   {
 143     XtVaSetValues (widget, XmNscaleWidth, wxMax (width, 10), NULL);
 144   }
 145
 146   if (((m_windowStyle & wxVERTICAL) == wxVERTICAL) && (height > -1))
 147   {
 148     XtVaSetValues (widget, XmNscaleHeight, wxMax (height, 10), NULL);
 149   }
 150
 151   int xx = x; int yy = y;
 152   AdjustForParentClientOrigin(xx, yy, sizeFlags);
 153
 154   if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 155     XtVaSetValues (widget, XmNx, xx, NULL);
 156   if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 157     XtVaSetValues (widget, XmNy, yy, NULL);
 158
 159   if (managed)
 160     XtManageChild (widget);
 161 }
 162
 163 void wxSlider::SetRange(int minValue, int maxValue)
 164 {
 165     m_rangeMin = minValue;
 166     m_rangeMax = maxValue;
 167
 168     XtVaSetValues ((Widget) m_mainWidget, XmNminimum, minValue, XmNmaximum, maxValue, NULL);
 169 }
 170
 171 // For trackbars only
 172 void wxSlider::SetTickFreq(int n, int pos)
 173 {
 174     // Not implemented in Motif
 175     m_tickFreq = n;
 176 }
 177
 178 void wxSlider::SetPageSize(int pageSize)
 179 {
 180     // Not implemented in Motif
 181     m_pageSize = pageSize;
 182 }
 183
 184 int wxSlider::GetPageSize() const
 185 {
 186     return m_pageSize;
 187 }
 188
 189 void wxSlider::ClearSel()
 190 {
 191     // Not implemented in Motif
 192 }
 193
 194 void wxSlider::ClearTicks()
 195 {
 196     // Not implemented in Motif
 197 }
 198
 199 void wxSlider::SetLineSize(int lineSize)
 200 {
 201     // Not implemented in Motif
 202     m_lineSize = lineSize;
 203 }
 204
 205 int wxSlider::GetLineSize() const
 206 {
 207     // Not implemented in Motif
 208     return m_lineSize;
 209 }
 210
 211 int wxSlider::GetSelEnd() const
 212 {
 213     // Not implemented in Motif
 214     return 0;
 215 }
 216
 217 int wxSlider::GetSelStart() const
 218 {
 219     // Not implemented in Motif
 220     return 0;
 221 }
 222
 223 void wxSlider::SetSelection(int WXUNUSED(minPos), int WXUNUSED(maxPos))
 224 {
 225     // Not implemented in Motif
 226 }
 227
 228 void wxSlider::SetThumbLength(int WXUNUSED(len))
 229 {
 230     // Not implemented in Motif (?)
 231 }
 232
 233 int wxSlider::GetThumbLength() const
 234 {
 235     // Not implemented in Motif (?)
 236     return 0;
 237 }
 238
 239 void wxSlider::SetTick(int WXUNUSED(tickPos))
 240 {
 241     // Not implemented in Motif
 242 }
 243
 244 void wxSlider::Command (wxCommandEvent & event)
 245 {
 246   SetValue (event.GetInt());
 247   ProcessCommand (event);
 248 }
 249
 250 void wxSlider::ChangeFont()
 251 {
 252     // TODO
 253 }
 254
 255 void wxSlider::ChangeBackgroundColour()
 256 {
 257     // TODO
 258 }
 259
 260 void wxSlider::ChangeForegroundColour()
 261 {
 262     // TODO
 263 }
 264
 265 void wxSliderCallback (Widget widget, XtPointer clientData, XmScaleCallbackStruct * cbs)
 266 {
 267     wxSlider *slider = (wxSlider *) clientData;
 268     switch (cbs->reason)
 269     {
 270         case XmCR_VALUE_CHANGED:
 271         case XmCR_DRAG:
 272         default:
 273         {
 274             // TODO: the XmCR_VALUE_CHANGED case should be handled
 275             // differently (it's not sent continually as the slider moves).
 276             // In which case we need a similar behaviour for other platforms.
 277
 278             wxScrollEvent event(wxEVT_SCROLL_THUMBTRACK, slider->GetId());
 279             XtVaGetValues (widget, XmNvalue, &event.m_commandInt, NULL);
 280             event.SetEventObject(slider);
 281             slider->ProcessCommand(event);
 282             break;
 283         }
 284     }
 285 }
 286