interface/wx/stattext.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        stattext.h
   3 // Purpose:     interface of wxStaticText
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxStaticText
  11
  12     A static text control displays one or more lines of read-only text.
  13     wxStaticText supports the three classic text alignments, label ellipsization
  14     and formatting markup.
  15
  16     @beginStyleTable
  17     @style{wxALIGN_LEFT}
  18            Align the text to the left.
  19     @style{wxALIGN_RIGHT}
  20            Align the text to the right.
  21     @style{wxALIGN_CENTRE}
  22            Center the text (horizontally).
  23     @style{wxST_NO_AUTORESIZE}
  24            By default, the control will adjust its size to exactly fit to the
  25            size of the text when SetLabel() is called. If this style flag is
  26            given, the control will not change its size (this style is
  27            especially useful with controls which also have the @c wxALIGN_RIGHT or
  28            the @c wxALIGN_CENTRE style because otherwise they won't make sense any
  29            longer after a call to SetLabel()).
  30     @style{wxST_ELLIPSIZE_START}
  31            If the labeltext width exceeds the control width, replace the beginning
  32            of the label with an ellipsis; uses wxControl::Ellipsize.
  33     @style{wxST_ELLIPSIZE_MIDDLE}
  34            If the label text width exceeds the control width, replace the middle
  35            of the label with an ellipsis; uses wxControl::Ellipsize.
  36     @style{wxST_ELLIPSIZE_END}
  37            If the label text width exceeds the control width, replace the end
  38            of the label with an ellipsis; uses wxControl::Ellipsize.
  39     @style{wxST_MARKUP}
  40            Support markup in the label; see SetLabel() for more information.
  41     @endStyleTable
  42
  43     @library{wxcore}
  44     @category{ctrl}
  45     @appearance{statictext.png}
  46
  47     @see wxStaticBitmap, wxStaticBox
  48 */
  49 class wxStaticText : public wxControl
  50 {
  51 public:
  52     /**
  53         Default constructor.
  54     */
  55     wxStaticText();
  56
  57     /**
  58         Constructor, creating and showing a text control.
  59
  60         @param parent
  61             Parent window. Should not be @NULL.
  62         @param id
  63             Control identifier. A value of -1 denotes a default value.
  64         @param label
  65             Text label.
  66         @param pos
  67             Window position.
  68         @param size
  69             Window size.
  70         @param style
  71             Window style. See wxStaticText.
  72         @param name
  73             Window name.
  74
  75         @see Create()
  76     */
  77     wxStaticText(wxWindow* parent, wxWindowID id,
  78                  const wxString& label,
  79                  const wxPoint& pos = wxDefaultPosition,
  80                  const wxSize& size = wxDefaultSize,
  81                  long style = 0,
  82                  const wxString& name = wxStaticTextNameStr);
  83
  84     /**
  85         Creation function, for two-step construction. For details see wxStaticText().
  86     */
  87     bool Create(wxWindow* parent, wxWindowID id, const wxString& label,
  88                 const wxPoint& pos = wxDefaultPosition,
  89                 const wxSize& size = wxDefaultSize, long style = 0,
  90                 const wxString& name = wxStaticTextNameStr);
  91
  92     /**
  93         Returns the contents of the control.
  94
  95         Note that the returned string may contain both mnemonics (@& characters),
  96         and markup tags, if they were passed to the SetLabel() function.
  97
  98         Use GetLabelText() if only the label text, without mnemonics and without
  99         markup if the @c wxST_MARKUP style is set, is needed.
 100
 101         Also note that the returned string is always the string which was passed to
 102         SetLabel() but may be different from the string passed to SetLabelText()
 103         (since this last one escapes mnemonic characters and eventually markup).
 104     */
 105     wxString GetLabel() const;
 106
 107     /**
 108         This method returns the control's label without the mnemonics characters
 109         (if any) and without the markup (if the control has the @c wxST_MARKUP style).
 110
 111         Note that because of the stripping of the mnemonics and markup the returned
 112         string may differ from the string which was passed to SetLabel() but should
 113         always be the same which was passed to SetLabelText().
 114     */
 115     wxString GetLabelText() const;
 116
 117     /**
 118         Returns @true if the window styles for this control contains one of the
 119         @c wxST_ELLIPSIZE_START, @c wxST_ELLIPSIZE_MIDDLE or @c wxST_ELLIPSIZE_END styles.
 120     */
 121     bool IsEllipsized() const;
 122
 123     // NB: when writing docs for the following function remember that Doxygen
 124     //     will always expand HTML entities (e.g. &quot;) and thus we need to
 125     //     write e.g. "&amp;lt;" to have in the output the "&lt;" string.
 126
 127     /**
 128         Sets the static text label and updates the controls size to exactly fit the
 129         label unless the control has @c wxST_NO_AUTORESIZE flag.
 130
 131         This function allows to set decorated static label text, when the @c wxST_MARKUP
 132         style is used, on those platforms which support it (currently only GTK+ 2).
 133         For the other platforms or when @c wxST_MARKUP is not used, the markup is ignored.
 134
 135         The supported tags are:
 136         <TABLE>
 137             <TR>
 138                 <TD><b>Tag</b></TD>
 139                 <TD><b>Description</b></TD>
 140             </TR>
 141             <TR>
 142                 <TD>&lt;b&gt;</TD>
 143                 <TD>bold text</TD>
 144             </TR>
 145             <TR>
 146                 <TD>&lt;big&gt;</TD>
 147                 <TD>bigger text</TD>
 148             </TR>
 149             <TR>
 150                 <TD>&lt;i&gt;</TD>
 151                 <TD>italic text</TD>
 152             </TR>
 153             <TR>
 154                 <TD>&lt;s&gt;</TD>
 155                 <TD>strike-through text</TD>
 156             </TR>
 157             <TR>
 158                 <TD>&lt;sub&gt;</TD>
 159                 <TD>subscript text</TD>
 160             </TR>
 161             <TR>
 162                 <TD>&lt;sup&gt;</TD>
 163                 <TD>superscript text</TD>
 164             </TR>
 165             <TR>
 166                 <TD>&lt;small&gt;</TD>
 167                 <TD>smaller text</TD>
 168             </TR>
 169             <TR>
 170                 <TD>&lt;tt&gt;</TD>
 171                 <TD>monospaced text</TD>
 172             </TR>
 173             <TR>
 174                 <TD>&lt;u&gt;</TD>
 175                 <TD>underlined text</TD>
 176             </TR>
 177             <TR>
 178                 <TD>&lt;span&gt;</TD>
 179                 <TD>generic formatter tag; see Pango Markup
 180                     (http://library.gnome.org/devel/pango/unstable/PangoMarkupFormat.html)
 181                     for more information.</TD>
 182             </TR>
 183         </TABLE>
 184
 185         Note that the string must be well-formed (e.g. all tags must be correctly
 186         closed) otherwise it can be not shown correctly or at all.
 187         Also note that you need to escape the following special characters:
 188
 189         <TABLE>
 190             <TR>
 191                 <TD><b>Special character</b></TD>
 192                 <TD><b>Escape as</b></TD>
 193             </TR>
 194             <TR>
 195                 <TD>@c &amp;</TD>
 196                 <TD>@c &amp;amp; or as @c &amp;&amp;</TD>
 197             </TR>
 198             <TR>
 199                 <TD>@c &apos;</TD>
 200                 <TD>@c &amp;apos;</TD>
 201             </TR>
 202             <TR>
 203                 <TD>@c &quot;</TD>
 204                 <TD>@c &amp;quot;</TD>
 205             </TR>
 206             <TR>
 207                 <TD>@c &lt;</TD>
 208                 <TD>@c &amp;lt;</TD>
 209             </TR>
 210             <TR>
 211                 <TD>@c &gt;</TD>
 212                 <TD>@c &amp;gt;</TD>
 213             </TR>
 214         </TABLE>
 215
 216         The non-escaped ampersand @c &amp; characters are interpreted as
 217         mnemonics; see wxControl::SetLabel.
 218
 219         Example:
 220
 221         @param label
 222             The new label to set.
 223             It may contain newline characters and the markup tags described above.
 224     */
 225     virtual void SetLabel(const wxString& label);
 226
 227     /**
 228         Sets the control's label to exactly the given string.
 229
 230         Unlike SetLabel(), this function shows exactly the @a text passed to it
 231         in the control, without interpreting ampersands in it in any way and,
 232         if @c wxST_MARKUP is used, without interpreting markup tags.
 233         Notice that it means that the control can't have any mnemonic nor markup defined
 234         for it using this function.
 235
 236         @see EscapeMarkup()
 237     */
 238     virtual void SetLabelText(const wxString& text);
 239
 240     /**
 241         This functions wraps the controls label so that each of its lines becomes at
 242         most @a width pixels wide if possible (the lines are broken at words
 243         boundaries so it might not be the case if words are too long).
 244
 245         If @a width is negative, no wrapping is done. Note that this width is not
 246         necessarily the total width of the control, since a few pixels for the
 247         border (depending on the controls border style) may be added.
 248
 249         @since 2.6.2
 250     */
 251     void Wrap(int width);
 252
 253
 254 public:     // static functions
 255
 256     /**
 257         Returns the given @a label string without the mnemonics characters (if any)
 258         and without the markup.
 259
 260         Note that since this function is static it will always remove markup
 261         (since it cannot check @c wxST_MARKUP presence/absence!).
 262     */
 263     static wxString GetLabelText(const wxString& label);
 264
 265     /**
 266         Escapes all the symbols of @a str that have a special meaning (<tt><>&quot;'&</tt>) for
 267         wxStaticText objects with the @c wxST_MARKUP style.
 268
 269         Those symbols are replaced the corresponding entities
 270         (&amp;lt; &amp;gt; &amp;quot; &amp;apos; &amp;amp;).
 271     */
 272     static wxString EscapeMarkup(const wxString& str);
 273
 274     /**
 275         Removes the markup accepted by wxStaticText when the @c wxST_MARKUP style is used,
 276         and then returns the cleaned string.
 277
 278         See SetLabel() for more info about the markup.
 279     */
 280     static wxString RemoveMarkup(const wxString& str);
 281 };
 282