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23324ae1 FM |
1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: control.h | |
e54c96f1 | 3 | // Purpose: interface of wxControl |
23324ae1 FM |
4 | // Author: wxWidgets team |
5 | // RCS-ID: $Id$ | |
526954c5 | 6 | // Licence: wxWindows licence |
23324ae1 FM |
7 | ///////////////////////////////////////////////////////////////////////////// |
8 | ||
a78618b0 FM |
9 | /** |
10 | Flags used by wxControl::Ellipsize function. | |
11 | */ | |
12 | enum wxEllipsizeFlags | |
13 | { | |
355ce7ad VZ |
14 | /// No special flags. |
15 | wxELLIPSIZE_FLAGS_NONE = 0, | |
16 | ||
17 | /** | |
18 | Take mnemonics into account when calculating the text width. | |
19 | ||
20 | With this flag when calculating the size of the passed string, | |
21 | mnemonics characters (see wxControl::SetLabel) will be automatically | |
22 | reduced to a single character. This leads to correct calculations only | |
23 | if the string passed to Ellipsize() will be used with | |
24 | wxControl::SetLabel. If you don't want ampersand to be interpreted as | |
25 | mnemonics (e.g. because you use wxControl::SetLabelText) then don't use | |
26 | this flag. | |
27 | */ | |
28 | wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS = 1, | |
29 | ||
30 | /** | |
31 | Expand tabs in spaces when calculating the text width. | |
32 | ||
33 | This flag tells wxControl::Ellipsize() to calculate the width of tab | |
34 | characters @c '\\t' as 6 spaces. | |
35 | */ | |
36 | wxELLIPSIZE_FLAGS_EXPAND_TABS = 2, | |
a78618b0 FM |
37 | |
38 | /// The default flags for wxControl::Ellipsize. | |
355ce7ad VZ |
39 | wxELLIPSIZE_FLAGS_DEFAULT = wxELLIPSIZE_FLAGS_PROCESS_MNEMONICS| |
40 | wxELLIPSIZE_FLAGS_EXPAND_TABS | |
a78618b0 FM |
41 | }; |
42 | ||
43 | ||
5c87527c FM |
44 | /** |
45 | The different ellipsization modes supported by the | |
46 | wxControl::Ellipsize function. | |
47 | */ | |
48 | enum wxEllipsizeMode | |
49 | { | |
c937bcac VZ |
50 | /// Don't ellipsize the text at all. @since 2.9.1 |
51 | wxELLIPSIZE_NONE, | |
52 | ||
a78618b0 | 53 | /// Put the ellipsis at the start of the string, if the string needs ellipsization. |
5c87527c | 54 | wxELLIPSIZE_START, |
a78618b0 FM |
55 | |
56 | /// Put the ellipsis in the middle of the string, if the string needs ellipsization. | |
5c87527c | 57 | wxELLIPSIZE_MIDDLE, |
a78618b0 FM |
58 | |
59 | /// Put the ellipsis at the end of the string, if the string needs ellipsization. | |
5c87527c FM |
60 | wxELLIPSIZE_END |
61 | }; | |
62 | ||
23324ae1 FM |
63 | /** |
64 | @class wxControl | |
7c913512 | 65 | |
cdbcf4c2 | 66 | This is the base class for a control or "widget". |
7c913512 | 67 | |
23324ae1 FM |
68 | A control is generally a small window which processes user input and/or |
69 | displays one or more item of data. | |
7c913512 | 70 | |
3051a44a FM |
71 | @beginEventEmissionTable{wxClipboardTextEvent} |
72 | @event{EVT_TEXT_COPY(id, func)} | |
73 | Some or all of the controls content was copied to the clipboard. | |
74 | @event{EVT_TEXT_CUT(id, func)} | |
75 | Some or all of the controls content was cut (i.e. copied and | |
76 | deleted). | |
77 | @event{EVT_TEXT_PASTE(id, func)} | |
78 | Clipboard content was pasted into the control. | |
79 | @endEventTable | |
80 | ||
23324ae1 FM |
81 | @library{wxcore} |
82 | @category{ctrl} | |
7c913512 | 83 | |
e54c96f1 | 84 | @see wxValidator |
23324ae1 FM |
85 | */ |
86 | class wxControl : public wxWindow | |
87 | { | |
88 | public: | |
86381d42 RD |
89 | |
90 | /** | |
91 | Constructs a control. | |
92 | ||
93 | @param parent | |
94 | Pointer to a parent window. | |
95 | @param id | |
96 | Control identifier. If wxID_ANY, will automatically create an identifier. | |
97 | @param pos | |
98 | Control position. wxDefaultPosition indicates that wxWidgets | |
99 | should generate a default position for the control. | |
100 | @param size | |
101 | Control size. wxDefaultSize indicates that wxWidgets should generate | |
102 | a default size for the window. If no suitable size can be found, the | |
103 | window will be sized to 20x20 pixels so that the window is visible but | |
104 | obviously not correctly sized. | |
105 | @param style | |
106 | Control style. For generic window styles, please see wxWindow. | |
107 | @param name | |
108 | Control name. | |
109 | */ | |
110 | wxControl(wxWindow *parent, wxWindowID id, | |
111 | const wxPoint& pos = wxDefaultPosition, | |
112 | const wxSize& size = wxDefaultSize, long style = 0, | |
113 | const wxValidator& validator = wxDefaultValidator, | |
114 | const wxString& name = wxControlNameStr); | |
ba4f890e RD |
115 | |
116 | /** | |
117 | Default constructor to allow 2-phase creation. | |
118 | */ | |
119 | wxControl(); | |
120 | ||
86381d42 RD |
121 | bool Create(wxWindow *parent, wxWindowID id, |
122 | const wxPoint& pos = wxDefaultPosition, | |
123 | const wxSize& size = wxDefaultSize, long style = 0, | |
124 | const wxValidator& validator = wxDefaultValidator, | |
125 | const wxString& name = wxControlNameStr); | |
126 | ||
23324ae1 | 127 | /** |
bd0812fe BP |
128 | Simulates the effect of the user issuing a command to the item. |
129 | ||
130 | @see wxCommandEvent | |
23324ae1 | 131 | */ |
b7e94bd7 | 132 | virtual void Command(wxCommandEvent& event); |
23324ae1 | 133 | |
5c87527c | 134 | /** |
32ee98eb | 135 | Returns the control's label, as it was passed to SetLabel(). |
5c87527c | 136 | |
32ee98eb FM |
137 | Note that the returned string may contains mnemonics ("&" characters) if they were |
138 | passed to the SetLabel() function; use GetLabelText() if they are undesired. | |
bd0812fe | 139 | |
32ee98eb FM |
140 | Also note that the returned string is always the string which was passed to |
141 | SetLabel() but may be different from the string passed to SetLabelText() | |
142 | (since this last one escapes mnemonic characters). | |
23324ae1 | 143 | */ |
328f5751 | 144 | wxString GetLabel() const; |
23324ae1 | 145 | |
23324ae1 | 146 | /** |
bd0812fe | 147 | Returns the control's label without mnemonics. |
32ee98eb FM |
148 | |
149 | Note that because of the stripping of the mnemonics the returned string may differ | |
a7d354c6 FM |
150 | from the string which was passed to SetLabel() but should always be the same which |
151 | was passed to SetLabelText(). | |
23324ae1 | 152 | */ |
4707b84c | 153 | wxString GetLabelText() const; |
bd0812fe | 154 | |
7a78a937 VZ |
155 | /** |
156 | Determine the size needed by the control to leave the given area for | |
157 | its text. | |
158 | ||
159 | This function is mostly useful with control displaying short amounts of | |
160 | text that can be edited by the user, e.g. wxTextCtrl, wxComboBox, | |
161 | wxSearchCtrl etc. Typically it is used to size these controls for the | |
162 | maximal amount of input they are supposed to contain, for example: | |
163 | @code | |
164 | // Create a control for post code entry. | |
165 | wxTextCtrl* postcode = new wxTextCtrl(this, ...); | |
166 | ||
167 | // And set its initial and minimal size to be big enough for | |
168 | // entering 5 digits. | |
169 | postcode->SetInitialSize( | |
170 | postcode->GetSizeFromTextSize( | |
171 | postcode->GetTextExtent("99999"))); | |
172 | @endcode | |
173 | ||
174 | Currently this method is only implemented for wxTextCtrl, wxComboBox | |
aa24f946 | 175 | and wxChoice in wxMSW and wxGTK. |
7a78a937 VZ |
176 | |
177 | @param xlen The horizontal extent of the area to leave for text, in | |
178 | pixels. | |
179 | @param ylen The vertical extent of the area to leave for text, in | |
180 | pixels. By default -1 meaning that the vertical component of the | |
181 | returned size should be the default height of this control. | |
182 | @return The size that the control should have to leave the area of the | |
183 | specified size for its text. May return wxDefaultSize if this | |
184 | method is not implemented for this particular control under the | |
185 | current platform. | |
186 | ||
187 | @since 2.9.5 | |
188 | */ | |
189 | wxSize GetSizeFromTextSize(int xlen, int ylen = -1) const; | |
190 | ||
191 | /** | |
192 | @overload | |
193 | */ | |
194 | wxSize GetSizeFromTextSize(const wxSize& tsize) const; | |
195 | ||
32ee98eb FM |
196 | /** |
197 | Sets the control's label. | |
198 | ||
199 | All "&" characters in the @a label are special and indicate that the | |
200 | following character is a @e mnemonic for this control and can be used to | |
201 | activate it from the keyboard (typically by using @e Alt key in | |
202 | combination with it). To insert a literal ampersand character, you need | |
57ab6f23 | 203 | to double it, i.e. use "&&". If this behaviour is undesirable, use |
32ee98eb FM |
204 | SetLabelText() instead. |
205 | */ | |
206 | void SetLabel(const wxString& label); | |
207 | ||
208 | /** | |
209 | Sets the control's label to exactly the given string. | |
210 | ||
211 | Unlike SetLabel(), this function shows exactly the @a text passed to it | |
212 | in the control, without interpreting ampersands in it in any way. | |
213 | Notice that it means that the control can't have any mnemonic defined | |
214 | for it using this function. | |
215 | ||
216 | @see EscapeMnemonics() | |
217 | */ | |
218 | void SetLabelText(const wxString& text); | |
219 | ||
3da9cffc VZ |
220 | // NB: when writing docs for the following function remember that Doxygen |
221 | // will always expand HTML entities (e.g. ") and thus we need to | |
222 | // write e.g. "&lt;" to have in the output the "<" string. | |
223 | ||
224 | /** | |
225 | Sets the controls label to a string using markup. | |
226 | ||
227 | Simple markup supported by this function can be used to apply different | |
7d5051cb VZ |
228 | fonts or colours to different parts of the control label when supported. |
229 | If markup is not supported by the control or platform, it is simply | |
230 | stripped and SetLabel() is used with the resulting string. | |
3da9cffc VZ |
231 | |
232 | For example, | |
233 | @code | |
234 | wxStaticText *text; | |
235 | ... | |
236 | text->SetLabelMarkup("<b>&Bed</b> &mp; " | |
237 | "<span foreground='red'>breakfast</span> " | |
238 | "available <big>HERE</big>"); | |
239 | @endcode | |
240 | would show the string using bold, red and big for the corresponding | |
241 | words under wxGTK but will simply show the string "Bed & breakfast | |
242 | available HERE" on the other platforms. In any case, the "B" of "Bed" | |
243 | will be underlined to indicate that it can be used as a mnemonic for | |
244 | this control. | |
245 | ||
246 | The supported tags are: | |
247 | <TABLE> | |
248 | <TR> | |
249 | <TD><b>Tag</b></TD> | |
250 | <TD><b>Description</b></TD> | |
251 | </TR> | |
252 | <TR> | |
253 | <TD><b></TD> | |
254 | <TD>bold text</TD> | |
255 | </TR> | |
256 | <TR> | |
257 | <TD><big></TD> | |
258 | <TD>bigger text</TD> | |
259 | </TR> | |
260 | <TR> | |
261 | <TD><i></TD> | |
262 | <TD>italic text</TD> | |
263 | </TR> | |
264 | <TR> | |
265 | <TD><s></TD> | |
266 | <TD>strike-through text</TD> | |
267 | </TR> | |
268 | <TR> | |
269 | <TD><small></TD> | |
270 | <TD>smaller text</TD> | |
271 | </TR> | |
272 | <TR> | |
273 | <TD><tt></TD> | |
274 | <TD>monospaced text</TD> | |
275 | </TR> | |
276 | <TR> | |
277 | <TD><u></TD> | |
278 | <TD>underlined text</TD> | |
279 | </TR> | |
280 | <TR> | |
281 | <TD><span></TD> | |
282 | <TD>generic formatter tag, see the table below for supported | |
283 | attributes. | |
284 | </TD> | |
285 | </TR> | |
286 | </TABLE> | |
287 | ||
288 | Supported @c <span> attributes: | |
289 | <TABLE> | |
290 | <TR> | |
291 | <TD><b>Name</b></TD> | |
292 | <TD><b>Description</b></TD> | |
293 | </TR> | |
294 | <TR> | |
295 | <TD>foreground, fgcolor, color</TD> | |
296 | <TD>Foreground text colour, can be a name or RGB value.</TD> | |
297 | </TR> | |
298 | <TR> | |
299 | <TD>background, bgcolor</TD> | |
300 | <TD>Background text colour, can be a name or RGB value.</TD> | |
301 | </TR> | |
302 | <TR> | |
303 | <TD>font_family, face</TD> | |
304 | <TD>Font face name.</TD> | |
305 | </TR> | |
306 | <TR> | |
307 | <TD>font_weight, weight</TD> | |
308 | <TD>Numeric value in 0..900 range or one of "ultralight", | |
309 | "light", "normal" (all meaning non-bold), "bold", "ultrabold" | |
310 | and "heavy" (all meaning bold).</TD> | |
311 | </TR> | |
312 | <TR> | |
313 | <TD>font_style, style</TD> | |
314 | <TD>Either "oblique" or "italic" (both with the same meaning) | |
315 | or "normal".</TD> | |
316 | </TR> | |
317 | <TR> | |
318 | <TD>size</TD> | |
319 | <TD>The font size can be specified either as "smaller" or | |
320 | "larger" relatively to the current font, as a CSS font size | |
321 | name ("xx-small", "x-small", "small", "medium", "large", | |
322 | "x-large" or "xx-large") or as a number giving font size in | |
323 | 1024th parts of a point, i.e. 10240 for a 10pt font.</TD> | |
324 | </TR> | |
325 | </TABLE> | |
326 | ||
327 | This markup language is a strict subset of Pango markup (described at | |
328 | http://library.gnome.org/devel/pango/unstable/PangoMarkupFormat.html) | |
329 | and any tags and span attributes not documented above can't be used | |
330 | under non-GTK platforms. | |
331 | ||
332 | Also note that you need to escape the following special characters: | |
333 | <TABLE> | |
334 | <TR> | |
335 | <TD><b>Special character</b></TD> | |
336 | <TD><b>Escape as</b></TD> | |
337 | </TR> | |
338 | <TR> | |
339 | <TD>@c &</TD> | |
340 | <TD>@c &amp; or as @c &&</TD> | |
341 | </TR> | |
342 | <TR> | |
343 | <TD>@c '</TD> | |
344 | <TD>@c &apos;</TD> | |
345 | </TR> | |
346 | <TR> | |
347 | <TD>@c "</TD> | |
348 | <TD>@c &quot;</TD> | |
349 | </TR> | |
350 | <TR> | |
351 | <TD>@c <</TD> | |
352 | <TD>@c &lt;</TD> | |
353 | </TR> | |
354 | <TR> | |
355 | <TD>@c ></TD> | |
356 | <TD>@c &gt;</TD> | |
357 | </TR> | |
358 | </TABLE> | |
359 | ||
360 | The non-escaped ampersand @c & characters are interpreted as | |
361 | mnemonics as with wxControl::SetLabel. | |
362 | ||
363 | ||
364 | @param markup | |
7d5051cb VZ |
365 | String containing markup for the label. It may contain markup tags |
366 | described above and newline characters but currently only wxGTK and | |
367 | wxOSX support multiline labels with markup, the generic | |
368 | implementation (also used in wxMSW) only handles single line markup | |
369 | labels. Notice that the string must be well-formed (e.g. all tags | |
370 | must be correctly closed) and won't be shown at all otherwise. | |
3da9cffc VZ |
371 | @return |
372 | @true if the new label was set (even if markup in it was ignored) | |
373 | or @false if we failed to parse the markup. In this case the label | |
374 | remains unchanged. | |
375 | ||
7d5051cb VZ |
376 | |
377 | Currently wxButton supports markup in all major ports (wxMSW, wxGTK and | |
378 | wxOSX/Cocoa) while wxStaticText supports it in wxGTK and wxOSX and its | |
379 | generic version (which can be used under MSW if markup support is | |
380 | required). Extending support to more controls is planned in the future. | |
3da9cffc VZ |
381 | |
382 | @since 2.9.2 | |
383 | */ | |
384 | bool SetLabelMarkup(const wxString& markup); | |
385 | ||
32ee98eb FM |
386 | |
387 | public: // static functions | |
388 | ||
bd0812fe | 389 | /** |
4520d583 | 390 | Returns the given @a label string without mnemonics ("&" characters). |
bd0812fe BP |
391 | */ |
392 | static wxString GetLabelText(const wxString& label); | |
23324ae1 | 393 | |
4520d583 | 394 | /** |
32ee98eb FM |
395 | Returns the given @a str string without mnemonics ("&" characters). |
396 | ||
3da9cffc VZ |
397 | @note This function is identical to GetLabelText() and is provided |
398 | mostly for symmetry with EscapeMnemonics(). | |
4520d583 FM |
399 | */ |
400 | static wxString RemoveMnemonics(const wxString& str); | |
401 | ||
5b8b2c84 | 402 | /** |
32ee98eb | 403 | Escapes the special mnemonics characters ("&") in the given string. |
5b8b2c84 VZ |
404 | |
405 | This function can be helpful if you need to set the controls label to a | |
406 | user-provided string. If the string contains ampersands, they wouldn't | |
407 | appear on the display but be used instead to indicate that the | |
408 | character following the first of them can be used as a control mnemonic. | |
409 | While this can sometimes be desirable (e.g. to allow the user to | |
410 | configure mnemonics of the controls), more often you will want to use | |
411 | this function before passing a user-defined string to SetLabel(). | |
412 | Alternatively, if the label is entirely user-defined, you can just call | |
413 | SetLabelText() directly -- but this function must be used if the label | |
414 | is a combination of a part defined by program containing the control | |
415 | mnemonics and a user-defined part. | |
416 | ||
417 | @param text | |
418 | The string such as it should appear on the display. | |
419 | @return | |
420 | The same string with the ampersands in it doubled. | |
421 | */ | |
422 | static wxString EscapeMnemonics(const wxString& text); | |
423 | ||
23324ae1 | 424 | /** |
32ee98eb | 425 | Replaces parts of the @a label string with ellipsis, if needed, so |
508fc76d VS |
426 | that it fits into @a maxWidth pixels if possible. |
427 | ||
428 | Note that this function does @em not guarantee that the returned string | |
429 | will always be shorter than @a maxWidth; if @a maxWidth is extremely | |
430 | small, ellipsized text may be larger. | |
bd0812fe | 431 | |
32ee98eb FM |
432 | @param label |
433 | The string to ellipsize | |
434 | @param dc | |
435 | The DC used to retrieve the character widths through the | |
436 | wxDC::GetPartialTextExtents() function. | |
437 | @param mode | |
438 | The ellipsization mode. This is the setting which determines | |
439 | which part of the string should be replaced by the ellipsis. | |
440 | See ::wxEllipsizeMode enumeration values for more info. | |
441 | @param maxWidth | |
442 | The maximum width of the returned string in pixels. | |
443 | This argument determines how much characters of the string need to | |
444 | be removed (and replaced by ellipsis). | |
445 | @param flags | |
446 | One or more of the ::wxEllipsizeFlags enumeration values combined. | |
23324ae1 | 447 | */ |
32ee98eb FM |
448 | static wxString Ellipsize(const wxString& label, const wxDC& dc, |
449 | wxEllipsizeMode mode, int maxWidth, | |
450 | int flags = wxELLIPSIZE_FLAGS_DEFAULT); | |
23324ae1 | 451 | }; |
e54c96f1 | 452 |