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     if ( !((style & wxSL_HORIZONTAL) || (style & wxSL_VERTICAL)) )
  56          style |= wxSL_HORIZONTAL;
  57
  58     SetName(name);
  59     SetValidator(validator);
  60     m_backgroundColour = parent->GetBackgroundColour();
  61     m_foregroundColour = parent->GetForegroundColour();
  62
  63     if (parent) parent->AddChild(this);
  64
  65     m_lineSize = 1;
  66     m_windowStyle = style;
  67     m_tickFreq = 0;
  68
  69     if ( id == -1 )
  70         m_windowId = (int)NewControlId();
  71     else
  72         m_windowId = id;
  73
  74     m_rangeMax = maxValue;
  75     m_rangeMin = minValue;
  76
  77     // Not used in Motif, I think
  78     m_pageSize = (int)((maxValue-minValue)/10);
  79
  80     Widget parentWidget = (Widget) parent->GetClientWidget();
  81
  82     Widget sliderWidget = XtVaCreateManagedWidget ("sliderWidget",
  83         xmScaleWidgetClass, parentWidget,
  84         XmNorientation,
  85         (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmVERTICAL : XmHORIZONTAL),
  86         XmNprocessingDirection,
  87         (((m_windowStyle & wxSL_VERTICAL) == wxSL_VERTICAL) ? XmMAX_ON_TOP : XmMAX_ON_RIGHT),
  88         XmNmaximum, maxValue,
  89         XmNminimum, minValue,
  90         XmNvalue, value,
  91         XmNshowValue, True,
  92         NULL);
  93
  94     m_mainWidget = (WXWidget) sliderWidget;
  95
  96     if(style & wxSL_NOTIFY_DRAG)
  97         XtAddCallback (sliderWidget, XmNdragCallback,
  98         (XtCallbackProc) wxSliderCallback, (XtPointer) this);
  99     else
 100         XtAddCallback (sliderWidget, XmNvalueChangedCallback,
 101         (XtCallbackProc) wxSliderCallback, (XtPointer) this);
 102
 103     XtAddCallback (sliderWidget, XmNdragCallback, (XtCallbackProc) wxSliderCallback, (XtPointer) this);
 104
 105     m_font = parent->GetFont();
 106
 107     ChangeFont(FALSE);
 108     SetCanAddEventHandler(TRUE);
 109     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
 110
 111     ChangeBackgroundColour();
 112
 113     return TRUE;
 114 }
 115
 116 wxSlider::~wxSlider()
 117 {
 118 }
 119
 120 int wxSlider::GetValue() const
 121 {
 122     int val;
 123     XtVaGetValues ((Widget) m_mainWidget, XmNvalue, &val, NULL);
 124     return val;
 125 }
 126
 127 void wxSlider::SetValue(int value)
 128 {
 129     XtVaSetValues ((Widget) m_mainWidget, XmNvalue, value, NULL);
 130 }
 131
 132 void wxSlider::GetSize(int *width, int *height) const
 133 {
 134     wxControl::GetSize(width, height);
 135 }
 136
 137 void wxSlider::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 138 {
 139     Widget widget = (Widget) m_mainWidget;
 140
 141     bool managed = XtIsManaged(widget);
 142
 143     if (managed)
 144         XtUnmanageChild (widget);
 145
 146     if (((m_windowStyle & wxHORIZONTAL) == wxHORIZONTAL) && (width > -1))
 147     {
 148         XtVaSetValues (widget, XmNscaleWidth, wxMax (width, 10), NULL);
 149     }
 150
 151     if (((m_windowStyle & wxVERTICAL) == wxVERTICAL) && (height > -1))
 152     {
 153         XtVaSetValues (widget, XmNscaleHeight, wxMax (height, 10), NULL);
 154     }
 155
 156     int xx = x; int yy = y;
 157     AdjustForParentClientOrigin(xx, yy, sizeFlags);
 158
 159     if (x > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 160         XtVaSetValues (widget, XmNx, xx, NULL);
 161     if (y > -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 162         XtVaSetValues (widget, XmNy, yy, NULL);
 163
 164     if (managed)
 165         XtManageChild (widget);
 166 }
 167
 168 void wxSlider::SetRange(int minValue, int maxValue)
 169 {
 170     m_rangeMin = minValue;
 171     m_rangeMax = maxValue;
 172
 173     XtVaSetValues ((Widget) m_mainWidget, XmNminimum, minValue, XmNmaximum, maxValue, NULL);
 174 }
 175
 176 // For trackbars only
 177 void wxSlider::SetTickFreq(int n, int WXUNUSED(pos))
 178 {
 179     // Not implemented in Motif
 180     m_tickFreq = n;
 181 }
 182
 183 void wxSlider::SetPageSize(int pageSize)
 184 {
 185     // Not implemented in Motif
 186     m_pageSize = pageSize;
 187 }
 188
 189 int wxSlider::GetPageSize() const
 190 {
 191     return m_pageSize;
 192 }
 193
 194 void wxSlider::ClearSel()
 195 {
 196     // Not implemented in Motif
 197 }
 198
 199 void wxSlider::ClearTicks()
 200 {
 201     // Not implemented in Motif
 202 }
 203
 204 void wxSlider::SetLineSize(int lineSize)
 205 {
 206     // Not implemented in Motif
 207     m_lineSize = lineSize;
 208 }
 209
 210 int wxSlider::GetLineSize() const
 211 {
 212     // Not implemented in Motif
 213     return m_lineSize;
 214 }
 215
 216 int wxSlider::GetSelEnd() const
 217 {
 218     // Not implemented in Motif
 219     return 0;
 220 }
 221
 222 int wxSlider::GetSelStart() const
 223 {
 224     // Not implemented in Motif
 225     return 0;
 226 }
 227
 228 void wxSlider::SetSelection(int WXUNUSED(minPos), int WXUNUSED(maxPos))
 229 {
 230     // Not implemented in Motif
 231 }
 232
 233 void wxSlider::SetThumbLength(int WXUNUSED(len))
 234 {
 235     // Not implemented in Motif (?)
 236 }
 237
 238 int wxSlider::GetThumbLength() const
 239 {
 240     // Not implemented in Motif (?)
 241     return 0;
 242 }
 243
 244 void wxSlider::SetTick(int WXUNUSED(tickPos))
 245 {
 246     // Not implemented in Motif
 247 }
 248
 249 void wxSlider::Command (wxCommandEvent & event)
 250 {
 251     SetValue (event.GetInt());
 252     ProcessCommand (event);
 253 }
 254
 255 void wxSlider::ChangeFont(bool keepOriginalSize)
 256 {
 257     wxWindow::ChangeFont(keepOriginalSize);
 258 }
 259
 260 void wxSlider::ChangeBackgroundColour()
 261 {
 262     wxWindow::ChangeBackgroundColour();
 263 }
 264
 265 void wxSlider::ChangeForegroundColour()
 266 {
 267     wxWindow::ChangeForegroundColour();
 268 }
 269
 270 void wxSliderCallback (Widget widget, XtPointer clientData, XmScaleCallbackStruct * cbs)
 271 {
 272     wxSlider *slider = (wxSlider *) clientData;
 273     switch (cbs->reason)
 274     {
 275     case XmCR_VALUE_CHANGED:
 276     case XmCR_DRAG:
 277     default:
 278         {
 279             // TODO: the XmCR_VALUE_CHANGED case should be handled
 280             // differently (it's not sent continually as the slider moves).
 281             // In which case we need a similar behaviour for other platforms.
 282
 283             wxScrollEvent event(wxEVT_SCROLL_THUMBTRACK, slider->GetId());
 284             XtVaGetValues (widget, XmNvalue, &event.m_commandInt, NULL);
 285             event.SetEventObject(slider);
 286             slider->ProcessCommand(event);
 287
 288             // Also send a wxCommandEvent for compatibility.
 289             wxCommandEvent event2(wxEVT_COMMAND_SLIDER_UPDATED, slider->GetId());
 290             event2.SetEventObject(slider);
 291             slider->ProcessCommand(event2);
 292             break;
 293         }
 294     }
 295 }
 296