interface/bmpbuttn.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bmpbuttn.h
   3 // Purpose:     interface of wxBitmapButton
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxBitmapButton
  11     @wxheader{bmpbuttn.h}
  12
  13     A bitmap button is a control that contains a bitmap.
  14     It may be placed on a wxDialog or a wxPanel, or indeed almost any other window.
  15
  16     @remarks
  17     A bitmap button can be supplied with a single bitmap, and wxWidgets will draw
  18     all button states using this bitmap. If the application needs more control,
  19     additional bitmaps for the selected state, unpressed focused state, and greyed-out
  20     state may be supplied.
  21
  22     @section wxbitmapbutton_states Button states
  23     This class supports bitmaps for several different states:
  24
  25     @li @b normal: this is the bitmap shown in the default state, it must be always
  26         valid while all the other bitmaps are optional and don't have to be set.
  27     @li @b disabled: bitmap shown when the button is disabled.
  28     @li @b selected: bitmap shown when the button is pushed (e.g. while the user
  29         keeps the mouse button pressed on it)
  30     @li @b focus: bitmap shown when the button has keyboard focus but is not pressed.
  31     @li @b hover: bitmap shown when the mouse is over the button (but it is not pressed).
  32         Notice that if hover bitmap is not specified but the current platform UI uses
  33         hover images for the buttons (such as Windows XP or GTK+), then the focus bitmap
  34         is used for hover state as well. This makes it possible to set focus bitmap only
  35         to get reasonably good behaviour on all platforms.
  36
  37     @beginStyleTable
  38     @style{wxBU_AUTODRAW}
  39            If this is specified, the button will be drawn automatically using
  40            the label bitmap only, providing a 3D-look border. If this style is
  41            not specified, the button will be drawn without borders and using
  42            all provided bitmaps. Has effect only under MS Windows.
  43     @style{wxBU_LEFT}
  44            Left-justifies the bitmap label. Has effect only under MS Windows.
  45     @style{wxBU_TOP}
  46            Aligns the bitmap label to the top of the button.
  47            Has effect only under MS Windows.
  48     @style{wxBU_RIGHT}
  49            Right-justifies the bitmap label. Has effect only under MS Windows.
  50     @style{wxBU_BOTTOM}
  51            Aligns the bitmap label to the bottom of the button.
  52            Has effect only under MS Windows.
  53     @endStyleTable
  54
  55     Note that the wxBU_EXACTFIT style supported by wxButton is not used by this
  56     class as bitmap buttons don't have any minimal standard size by default.
  57
  58     @beginEventTable{wxCommandEvent}
  59     @event{EVT_BUTTON(id, func)}
  60            Process a wxEVT_COMMAND_BUTTON_CLICKED event, when the button is clicked.
  61     @endEventTable
  62
  63     @library{wxcore}
  64     @category{ctrl}
  65     <!-- @appearance{bitmapbutton.png} -->
  66
  67     @see wxButton
  68 */
  69 class wxBitmapButton : public wxButton
  70 {
  71 public:
  72     /**
  73         Default ctor.
  74     */
  75     wxBitmapButton();
  76
  77     /**
  78         Constructor, creating and showing a button.
  79
  80         @param parent
  81             Parent window. Must not be @NULL.
  82         @param id
  83             Button identifier. The value wxID_ANY indicates a default value.
  84         @param bitmap
  85             Bitmap to be displayed.
  86         @param pos
  87             Button position.
  88         @param size
  89             Button size. If wxDefaultSize is specified then the button is sized
  90             appropriately for the bitmap.
  91         @param style
  92             Window style. See wxBitmapButton.
  93         @param validator
  94             Window validator.
  95         @param name
  96             Window name.
  97
  98         @remarks The bitmap parameter is normally the only bitmap you need to provide,
  99                  and wxWidgets will draw the button correctly in its different states.
 100                  If you want more control, call any of the functions SetBitmapSelected(),
 101                  SetBitmapFocus(), SetBitmapDisabled().
 102
 103         @see Create(), wxValidator
 104     */
 105     wxBitmapButton(wxWindow* parent, wxWindowID id,
 106                    const wxBitmap& bitmap,
 107                    const wxPoint& pos = wxDefaultPosition,
 108                    const wxSize& size = wxDefaultSize,
 109                    long style = wxBU_AUTODRAW,
 110                    const wxValidator& validator = wxDefaultValidator,
 111                    const wxString& name = wxButtonNameStr);
 112
 113     /**
 114         Destructor, destroying the button.
 115     */
 116     virtual ~wxBitmapButton();
 117
 118     /**
 119         Button creation function for two-step creation.
 120         For more details, see wxBitmapButton().
 121     */
 122     bool Create(wxWindow* parent, wxWindowID id,
 123                 const wxBitmap& bitmap,
 124                 const wxPoint& pos = wxDefaultPosition,
 125                 const wxSize& size = wxDefaultSize,
 126                 long style = wxBU_AUTODRAW,
 127                 const wxValidator& validator = wxDefaultValidator,
 128                 const wxString& name = wxButtonNameStr);
 129
 130     //@{
 131     /**
 132         Returns the bitmap for the disabled state, which may be invalid.
 133
 134         @return A reference to the disabled state bitmap.
 135
 136         @see SetBitmapDisabled()
 137     */
 138     const wxBitmap& GetBitmapDisabled() const;
 139     wxBitmap& GetBitmapDisabled();
 140     //@}
 141
 142     //@{
 143     /**
 144         Returns the bitmap for the focused state, which may be invalid.
 145
 146         @return A reference to the focused state bitmap.
 147
 148         @see SetBitmapFocus()
 149     */
 150     const wxBitmap& GetBitmapFocus() const;
 151     wxBitmap&  GetBitmapFocus();
 152     //@}
 153
 154     //@{
 155     /**
 156         Returns the bitmap used when the mouse is over the button, which may be invalid.
 157
 158         @see SetBitmapHover()
 159     */
 160     const wxBitmap& GetBitmapHover();
 161     wxBitmap&  GetBitmapHover();
 162     //@}
 163
 164     //@{
 165     /**
 166         Returns the label bitmap (the one passed to the constructor), always valid.
 167
 168         @return A reference to the button's label bitmap.
 169
 170         @see SetBitmapLabel()
 171     */
 172     const wxBitmap& GetBitmapLabel();
 173     wxBitmap&  GetBitmapLabel();
 174     //@}
 175
 176     /**
 177         Returns the bitmap for the selected state.
 178
 179         @return A reference to the selected state bitmap.
 180
 181         @see SetBitmapSelected()
 182     */
 183     const wxBitmap& GetBitmapSelected() const;
 184
 185     /**
 186         Sets the bitmap for the disabled button appearance.
 187
 188         @param bitmap
 189             The bitmap to set.
 190
 191         @see GetBitmapDisabled(), SetBitmapLabel(),
 192              SetBitmapSelected(), SetBitmapFocus()
 193     */
 194     virtual void SetBitmapDisabled(const wxBitmap& bitmap);
 195
 196     /**
 197         Sets the bitmap for the button appearance when it has the keyboard focus.
 198
 199         @param bitmap
 200             The bitmap to set.
 201
 202         @see GetBitmapFocus(), SetBitmapLabel(),
 203              SetBitmapSelected(), SetBitmapDisabled()
 204     */
 205     virtual void SetBitmapFocus(const wxBitmap& bitmap);
 206
 207     /**
 208         Sets the bitmap to be shown when the mouse is over the button.
 209
 210         @since 2.7.0
 211
 212         The hover bitmap is currently only supported in wxMSW.
 213
 214         @see GetBitmapHover()
 215     */
 216     virtual void SetBitmapHover(const wxBitmap& bitmap);
 217
 218     /**
 219         Sets the bitmap label for the button.
 220
 221         @param bitmap
 222             The bitmap label to set.
 223
 224         @remarks This is the bitmap used for the unselected state, and for all
 225                  other states if no other bitmaps are provided.
 226
 227         @see GetBitmapLabel()
 228     */
 229     virtual void SetBitmapLabel(const wxBitmap& bitmap);
 230
 231     /**
 232         Sets the bitmap for the selected (depressed) button appearance.
 233
 234         @param bitmap
 235             The bitmap to set.
 236     */
 237     virtual void SetBitmapSelected(const wxBitmap& bitmap);
 238 };
 239