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