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     m_windowFont = parent->GetFont();
 103
 104     ChangeFont(FALSE);
 105     SetCanAddEventHandler(TRUE);
 106     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
 107
 108     ChangeBackgroundColour();
 109
 110     return TRUE;
 111 }
 112
 113 wxSlider::~wxSlider()
 114 {
 115 }
 116
 117 int wxSlider::GetValue() const
 118 {
 119     int val;
 120     XtVaGetValues ((Widget) m_mainWidget, XmNvalue, &val, NULL);
 121     return val;
 122 }
 123
 124 void wxSlider::SetValue(int value)
 125 {
 126     XtVaSetValues ((Widget) m_mainWidget, XmNvalue, value, NULL);
 127 }
 128
 129 void wxSlider::GetSize(int *width, int *height) const
 130 {
 131     wxControl::GetSize(width, height);
 132 }
 133
 134 void wxSlider::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 135 {
 136     Widget widget = (Widget) m_mainWidget;
 137
 138     bool managed = XtIsManaged(widget);
 139
 140     if (managed)
 141         XtUnmanageChild (widget);
 142
 143     if (((m_windowStyle & wxHORIZONTAL) == wxHORIZONTAL) && (width > -1))
 144     {
 145         XtVaSetValues (widget, XmNscaleWidth, wxMax (width, 10), NULL);
 146     }
 147
 148     if (((m_windowStyle & wxVERTICAL) == wxVERTICAL) && (height > -1))
 149     {
 150         XtVaSetValues (widget, XmNscaleHeight, wxMax (height, 10), NULL);
 151     }
 152
 153     int xx = x; int yy = y;
 154     AdjustForParentClientOrigin(xx, yy, sizeFlags);
 155
 156     if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 157         XtVaSetValues (widget, XmNx, xx, NULL);
 158     if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 159         XtVaSetValues (widget, XmNy, yy, NULL);
 160
 161     if (managed)
 162         XtManageChild (widget);
 163 }
 164
 165 void wxSlider::SetRange(int minValue, int maxValue)
 166 {
 167     m_rangeMin = minValue;
 168     m_rangeMax = maxValue;
 169
 170     XtVaSetValues ((Widget) m_mainWidget, XmNminimum, minValue, XmNmaximum, maxValue, NULL);
 171 }
 172
 173 // For trackbars only
 174 void wxSlider::SetTickFreq(int n, int pos)
 175 {
 176     // Not implemented in Motif
 177     m_tickFreq = n;
 178 }
 179
 180 void wxSlider::SetPageSize(int pageSize)
 181 {
 182     // Not implemented in Motif
 183     m_pageSize = pageSize;
 184 }
 185
 186 int wxSlider::GetPageSize() const
 187 {
 188     return m_pageSize;
 189 }
 190
 191 void wxSlider::ClearSel()
 192 {
 193     // Not implemented in Motif
 194 }
 195
 196 void wxSlider::ClearTicks()
 197 {
 198     // Not implemented in Motif
 199 }
 200
 201 void wxSlider::SetLineSize(int lineSize)
 202 {
 203     // Not implemented in Motif
 204     m_lineSize = lineSize;
 205 }
 206
 207 int wxSlider::GetLineSize() const
 208 {
 209     // Not implemented in Motif
 210     return m_lineSize;
 211 }
 212
 213 int wxSlider::GetSelEnd() const
 214 {
 215     // Not implemented in Motif
 216     return 0;
 217 }
 218
 219 int wxSlider::GetSelStart() const
 220 {
 221     // Not implemented in Motif
 222     return 0;
 223 }
 224
 225 void wxSlider::SetSelection(int WXUNUSED(minPos), int WXUNUSED(maxPos))
 226 {
 227     // Not implemented in Motif
 228 }
 229
 230 void wxSlider::SetThumbLength(int WXUNUSED(len))
 231 {
 232     // Not implemented in Motif (?)
 233 }
 234
 235 int wxSlider::GetThumbLength() const
 236 {
 237     // Not implemented in Motif (?)
 238     return 0;
 239 }
 240
 241 void wxSlider::SetTick(int WXUNUSED(tickPos))
 242 {
 243     // Not implemented in Motif
 244 }
 245
 246 void wxSlider::Command (wxCommandEvent & event)
 247 {
 248     SetValue (event.GetInt());
 249     ProcessCommand (event);
 250 }
 251
 252 void wxSlider::ChangeFont(bool keepOriginalSize)
 253 {
 254     wxWindow::ChangeFont(keepOriginalSize);
 255 }
 256
 257 void wxSlider::ChangeBackgroundColour()
 258 {
 259     wxWindow::ChangeBackgroundColour();
 260 }
 261
 262 void wxSlider::ChangeForegroundColour()
 263 {
 264     wxWindow::ChangeForegroundColour();
 265 }
 266
 267 void wxSliderCallback (Widget widget, XtPointer clientData, XmScaleCallbackStruct * cbs)
 268 {
 269     wxSlider *slider = (wxSlider *) clientData;
 270     switch (cbs->reason)
 271     {
 272     case XmCR_VALUE_CHANGED:
 273     case XmCR_DRAG:
 274     default:
 275         {
 276             // TODO: the XmCR_VALUE_CHANGED case should be handled
 277             // differently (it's not sent continually as the slider moves).
 278             // In which case we need a similar behaviour for other platforms.
 279
 280             wxScrollEvent event(wxEVT_SCROLL_THUMBTRACK, slider->GetId());
 281             XtVaGetValues (widget, XmNvalue, &event.m_commandInt, NULL);
 282             event.SetEventObject(slider);
 283             slider->ProcessCommand(event);
 284
 285             // Also send a wxCommandEvent for compatibility.
 286             wxCommandEvent event2(wxEVT_COMMAND_SLIDER_UPDATED, slider->GetId());
 287             event2.SetEventObject(slider);
 288             slider->ProcessCommand(event2);
 289             break;
 290         }
 291     }
 292 }
 293