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