include/wx/univ/slider.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/univ/slider.h
   3 // Purpose:     wxSlider control for wxUniversal
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     09.02.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13     #pragma interface "univslider.h"
  14 #endif
  15
  16 #ifndef _WX_UNIV_SLIDER_H_
  17 #define _WX_UNIV_SLIDER_H_
  18
  19 #include "wx/univ/scrthumb.h"
  20
  21 // ----------------------------------------------------------------------------
  22 // the actions supported by this control
  23 // ----------------------------------------------------------------------------
  24
  25 // our actions are the same as scrollbars
  26
  27 #define wxACTION_SLIDER_START       _T("start")     // to the beginning
  28 #define wxACTION_SLIDER_END         _T("end")       // to the end
  29 #define wxACTION_SLIDER_LINE_UP     _T("lineup")    // one line up/left
  30 #define wxACTION_SLIDER_PAGE_UP     _T("pageup")    // one page up/left
  31 #define wxACTION_SLIDER_LINE_DOWN   _T("linedown")  // one line down/right
  32 #define wxACTION_SLIDER_PAGE_DOWN   _T("pagedown")  // one page down/right
  33 #define wxACTION_SLIDER_PAGE_CHANGE _T("pagechange")// change page by numArg
  34
  35 #define wxACTION_SLIDER_THUMB_DRAG      _T("thumbdrag")
  36 #define wxACTION_SLIDER_THUMB_MOVE      _T("thumbmove")
  37 #define wxACTION_SLIDER_THUMB_RELEASE   _T("thumbrelease")
  38
  39 // ----------------------------------------------------------------------------
  40 // wxSlider
  41 // ----------------------------------------------------------------------------
  42
  43 class WXDLLEXPORT wxSlider : public wxSliderBase,
  44                              public wxControlWithThumb
  45 {
  46 public:
  47     // ctors and such
  48     wxSlider();
  49
  50     wxSlider(wxWindow *parent,
  51              wxWindowID id,
  52              int value, int minValue, int maxValue,
  53              const wxPoint& pos = wxDefaultPosition,
  54              const wxSize& size = wxDefaultSize,
  55              long style = wxSL_HORIZONTAL,
  56              const wxValidator& validator = wxDefaultValidator,
  57              const wxString& name = wxSliderNameStr);
  58
  59     bool Create(wxWindow *parent,
  60                 wxWindowID id,
  61                 int value, int minValue, int maxValue,
  62                 const wxPoint& pos = wxDefaultPosition,
  63                 const wxSize& size = wxDefaultSize,
  64                 long style = wxSL_HORIZONTAL,
  65                 const wxValidator& validator = wxDefaultValidator,
  66                 const wxString& name = wxSliderNameStr);
  67
  68     // implement base class pure virtuals
  69     virtual int GetValue() const;
  70     virtual void SetValue(int value);
  71
  72     virtual void SetRange(int minValue, int maxValue);
  73     virtual int GetMin() const;
  74     virtual int GetMax() const;
  75
  76     virtual void SetLineSize(int lineSize);
  77     virtual void SetPageSize(int pageSize);
  78     virtual int GetLineSize() const;
  79     virtual int GetPageSize() const;
  80
  81     virtual void SetThumbLength(int lenPixels);
  82     virtual int GetThumbLength() const;
  83
  84     virtual void SetTickFreq(int n, int WXUNUSED(dummy) = 0);
  85     virtual int GetTickFreq() const { return m_tickFreq; }
  86
  87     // wxUniv-specific methods
  88     // -----------------------
  89
  90     // is this a vertical slider?
  91     bool IsVert() const { return (GetWindowStyle() & wxSL_VERTICAL) != 0; }
  92
  93     // get the slider orientation
  94     wxOrientation GetOrientation() const
  95         { return IsVert() ? wxVERTICAL : wxHORIZONTAL; }
  96
  97     // do we have labels?
  98     bool HasLabels() const { return (GetWindowStyle() & wxSL_LABELS) != 0; }
  99
 100     // do we have ticks?
 101     bool HasTicks() const { return (GetWindowStyle() & wxSL_TICKS) != 0; }
 102
 103     // implement wxControlWithThumb interface
 104     virtual wxWindow *GetWindow() { return this; }
 105     virtual bool IsVertical() const { return IsVert(); }
 106
 107     virtual wxScrollThumb::Shaft HitTest(const wxPoint& pt) const;
 108     virtual wxCoord ThumbPosToPixel() const;
 109     virtual int PixelToThumbPos(wxCoord x) const;
 110
 111     virtual void SetShaftPartState(wxScrollThumb::Shaft shaftPart,
 112                                    int flag,
 113                                    bool set = TRUE);
 114
 115     virtual void OnThumbDragStart(int pos);
 116     virtual void OnThumbDrag(int pos);
 117     virtual void OnThumbDragEnd(int pos);
 118     virtual void OnPageScrollStart();
 119     virtual bool OnPageScroll(int pageInc);
 120
 121     // for wxStdSliderButtonInputHandler
 122     wxScrollThumb& GetThumb() { return m_thumb; }
 123
 124 protected:
 125     enum
 126     {
 127         INVALID_THUMB_VALUE = -0xffff
 128     };
 129
 130     // overridden base class virtuals
 131     virtual wxSize DoGetBestClientSize() const;
 132     virtual void DoDraw(wxControlRenderer *renderer);
 133     virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
 134
 135     virtual bool PerformAction(const wxControlAction& action,
 136                                long numArg = 0,
 137                                const wxString& strArg = wxEmptyString);
 138
 139     // event handlers
 140     void OnSize(wxSizeEvent& event);
 141
 142     // common part of all ctors
 143     void Init();
 144
 145     // normalize the value to fit in the range
 146     int NormalizeValue(int value) const;
 147
 148     // change the value by the given increment, return TRUE if really changed
 149     bool ChangeValueBy(int inc);
 150
 151     // change the value to the given one
 152     bool ChangeValueTo(int value);
 153
 154     // is the value inside the range?
 155     bool IsInRange(int value) { return (value >= m_min) && (value <= m_max); }
 156
 157     // format the value for printing as label
 158     virtual wxString FormatValue(int value) const;
 159
 160     // calculate max label size
 161     wxSize CalcLabelSize() const;
 162
 163     // calculate m_rectLabel/Slider
 164     void CalcGeometry();
 165
 166     // get the thumb size
 167     wxSize GetThumbSize() const;
 168
 169     // get the shaft rect (uses m_rectSlider which is supposed to be calculated)
 170     wxRect GetShaftRect() const;
 171
 172     // calc the current thumb position using the shaft rect (if the pointer is
 173     // NULL, we calculate it here too)
 174     void CalcThumbRect(const wxRect *rectShaft,
 175                        wxRect *rectThumbOut,
 176                        wxRect *rectLabelOut,
 177                        int value = INVALID_THUMB_VALUE) const;
 178
 179     // return the slider rect calculating it if needed
 180     const wxRect& GetSliderRect() const;
 181
 182     // refresh the current thumb position
 183     void RefreshThumb();
 184
 185 private:
 186     // get the default thumb size (without using m_thumbSize)
 187     wxSize GetDefaultThumbSize() const;
 188
 189     // the object which manages our thumb
 190     wxScrollThumb m_thumb;
 191
 192     // the slider range and value
 193     int m_min,
 194         m_max,
 195         m_value;
 196
 197     // the tick frequence (default is 1)
 198     int m_tickFreq;
 199
 200     // the line and page increments (logical units)
 201     int m_lineSize,
 202         m_pageSize;
 203
 204     // the size of the thumb (in pixels)
 205     int m_thumbSize;
 206
 207     // the part of the client area reserved for the label, the ticks and the
 208     // part for the slider itself
 209     wxRect m_rectLabel,
 210            m_rectTicks,
 211            m_rectSlider;
 212
 213     // the state of the thumb (wxCONTROL_XXX constants sum)
 214     int m_thumbFlags;
 215
 216     DECLARE_EVENT_TABLE()
 217     DECLARE_DYNAMIC_CLASS(wxSlider)
 218 };
 219
 220 // ----------------------------------------------------------------------------
 221 // wxStdSliderButtonInputHandler: default slider input handling
 222 // ----------------------------------------------------------------------------
 223
 224 class WXDLLEXPORT wxStdSliderButtonInputHandler : public wxStdInputHandler
 225 {
 226 public:
 227     // default ctor
 228     wxStdSliderButtonInputHandler(wxInputHandler *inphand)
 229         : wxStdInputHandler(inphand)
 230     {
 231     }
 232
 233     // base class methods
 234     virtual bool HandleKey(wxControl *control,
 235                            const wxKeyEvent& event,
 236                            bool pressed);
 237     virtual bool HandleMouse(wxControl *control,
 238                              const wxMouseEvent& event);
 239     virtual bool HandleMouseMove(wxControl *control,
 240                                  const wxMouseEvent& event);
 241
 242     virtual bool HandleFocus(wxControl *control, const wxFocusEvent& event);
 243 };
 244
 245 #endif // _WX_UNIV_SLIDER_H_