interface/wx/fontpicker.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fontpicker.h
   3 // Purpose:     interface of wxFontPickerCtrl
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxFontPickerCtrl
  11
  12     This control allows the user to select a font. The generic implementation is
  13     a button which brings up a wxFontDialog when clicked. Native implementation
  14     may differ but this is usually a (small) widget which give access to the
  15     font-chooser dialog.
  16     It is only available if @c wxUSE_FONTPICKERCTRL is set to 1 (the default).
  17
  18     @beginStyleTable
  19     @style{wxFNTP_DEFAULT_STYLE}
  20            The default style: wxFNTP_FONTDESC_AS_LABEL | wxFNTP_USEFONT_FOR_LABEL.
  21     @style{wxFNTP_USE_TEXTCTRL}
  22            Creates a text control to the left of the picker button which is
  23            completely managed by the wxFontPickerCtrl and which can be used by
  24            the user to specify a font (see SetSelectedFont). The text control
  25            is automatically synchronized with button's value. Use functions
  26            defined in wxPickerBase to modify the text control.
  27     @style{wxFNTP_FONTDESC_AS_LABEL}
  28            Keeps the label of the button updated with the fontface name and
  29            the font size. E.g. choosing "Times New Roman bold, italic with
  30            size 10" from the fontdialog, will update the label (overwriting
  31            any previous label) with the "Times New Roman, 10" text.
  32     @style{wxFNTP_USEFONT_FOR_LABEL}
  33            Uses the currently selected font to draw the label of the button.
  34     @endStyleTable
  35
  36     @beginEventTable{wxFontPickerEvent}
  37     @event{EVT_FONTPICKER_CHANGED(id, func)}
  38         The user changed the font selected in the control either using the button
  39         or using text control (see wxFNTP_USE_TEXTCTRL; note that in this case the
  40         event is fired only if the user's input is valid, i.e. recognizable).
  41     @endEventTable
  42
  43     @library{wxcore}
  44     @category{pickers}
  45     <!-- @appearance{fontpickerctrl.png} -->
  46
  47     @see wxFontDialog, wxFontPickerEvent
  48 */
  49 class wxFontPickerCtrl : public wxPickerBase
  50 {
  51 public:
  52     /**
  53         Initializes the object and calls Create() with
  54         all the parameters.
  55     */
  56     wxFontPickerCtrl(wxWindow* parent, wxWindowID id,
  57                      const wxFont& font = wxNullFont,
  58                      const wxPoint& pos = wxDefaultPosition,
  59                      const wxSize& size = wxDefaultSize,
  60                      long style = wxFNTP_DEFAULT_STYLE,
  61                      const wxValidator& validator = wxDefaultValidator,
  62                      const wxString& name = "fontpickerctrl");
  63
  64     /**
  65         Creates this widget with given parameters.
  66
  67         @param parent
  68             Parent window, must not be non-@NULL.
  69         @param id
  70             The identifier for the control.
  71         @param font
  72             The initial font shown in the control.
  73             If ::wxNullFont is given, the default font is used.
  74         @param pos
  75             Initial position.
  76         @param size
  77             Initial size.
  78         @param style
  79             The window style, see wxFNTP_* flags.
  80         @param validator
  81             Validator which can be used for additional date checks.
  82         @param name
  83             Control name.
  84
  85         @return @true if the control was successfully created or @false if
  86                  creation failed.
  87     */
  88     bool Create(wxWindow* parent, wxWindowID id,
  89                 const wxFont& font = wxNullFont,
  90                 const wxPoint& pos = wxDefaultPosition,
  91                 const wxSize& size = wxDefaultSize,
  92                 long style = wxFNTP_DEFAULT_STYLE,
  93                 const wxValidator& validator = wxDefaultValidator,
  94                 const wxString& name = "fontpickerctrl");
  95
  96     /**
  97         Returns the maximum point size value allowed for the user-chosen font.
  98     */
  99     unsigned int GetMaxPointSize() const;
 100
 101     /**
 102         Returns the currently selected font.
 103         Note that this function is completely different from wxWindow::GetFont.
 104     */
 105     wxFont GetSelectedFont() const;
 106
 107     /**
 108         Sets the maximum point size value allowed for the user-chosen font.
 109
 110         The default value is 100. Note that big fonts can require a lot of memory and
 111         CPU time both for creation and for rendering; thus, specially because the user
 112         has the option to specify the fontsize through a text control
 113         (see wxFNTP_USE_TEXTCTRL), it's a good idea to put a limit to the maximum
 114         font size when huge fonts do not make much sense.
 115     */
 116     void GetMaxPointSize(unsigned int max);
 117
 118     /**
 119         Sets the currently selected font.
 120         Note that this function is completely different from wxWindow::SetFont.
 121     */
 122     void SetSelectedFont(const wxFont& font);
 123 };
 124
 125
 126
 127 /**
 128     @class wxFontPickerEvent
 129
 130     This event class is used for the events generated by
 131     wxFontPickerCtrl.
 132
 133     @beginEventTable{wxFontPickerEvent}
 134     @event{EVT_FONTPICKER_CHANGED(id, func)}
 135         Generated whenever the selected font changes.
 136     @endEventTable
 137
 138     @library{wxcore}
 139     @category{events}
 140
 141     @see wxFontPickerCtrl
 142 */
 143 class wxFontPickerEvent : public wxCommandEvent
 144 {
 145 public:
 146     /**
 147         The constructor is not normally used by the user code.
 148     */
 149     wxFontPickerEvent(wxObject* generator, int id,
 150                       const wxFont& font);
 151
 152     /**
 153         Retrieve the font the user has just selected.
 154     */
 155     wxFont GetFont() const;
 156
 157     /**
 158         Set the font associated with the event.
 159     */
 160     void SetFont(const wxFont& f);
 161 };
 162