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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/gtk/control.cpp | |
3 | // Purpose: wxControl implementation for wxGTK | |
4 | // Author: Robert Roebling | |
5 | // Id: $Id$ | |
6 | // Copyright: (c) 1998 Robert Roebling, Julian Smart and Vadim Zeitlin | |
7 | // Licence: wxWindows licence | |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | // For compilers that support precompilation, includes "wx.h". | |
11 | #include "wx/wxprec.h" | |
12 | ||
13 | #if wxUSE_CONTROLS | |
14 | ||
15 | #include "wx/control.h" | |
16 | ||
17 | #ifndef WX_PRECOMP | |
18 | #include "wx/log.h" | |
19 | #include "wx/settings.h" | |
20 | #endif | |
21 | ||
22 | #include "wx/fontutil.h" | |
23 | #include "wx/gtk/private.h" | |
24 | ||
25 | // ============================================================================ | |
26 | // wxControl implementation | |
27 | // ============================================================================ | |
28 | ||
29 | // ---------------------------------------------------------------------------- | |
30 | // wxControl creation | |
31 | // ---------------------------------------------------------------------------- | |
32 | ||
33 | IMPLEMENT_DYNAMIC_CLASS(wxControl, wxWindow) | |
34 | ||
35 | wxControl::wxControl() | |
36 | { | |
37 | m_needParent = true; | |
38 | } | |
39 | ||
40 | bool wxControl::Create( wxWindow *parent, | |
41 | wxWindowID id, | |
42 | const wxPoint &pos, | |
43 | const wxSize &size, | |
44 | long style, | |
45 | const wxValidator& validator, | |
46 | const wxString &name ) | |
47 | { | |
48 | bool ret = wxWindow::Create(parent, id, pos, size, style, name); | |
49 | ||
50 | #if wxUSE_VALIDATORS | |
51 | SetValidator(validator); | |
52 | #endif | |
53 | ||
54 | return ret; | |
55 | } | |
56 | ||
57 | wxSize wxControl::DoGetBestSize() const | |
58 | { | |
59 | // Do not return any arbitrary default value... | |
60 | wxASSERT_MSG( m_widget, wxT("DoGetBestSize called before creation") ); | |
61 | ||
62 | GtkRequisition req; | |
63 | req.width = 2; | |
64 | req.height = 2; | |
65 | (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request ) | |
66 | (m_widget, &req ); | |
67 | ||
68 | wxSize best(req.width, req.height); | |
69 | CacheBestSize(best); | |
70 | return best; | |
71 | } | |
72 | ||
73 | void wxControl::PostCreation(const wxSize& size) | |
74 | { | |
75 | wxWindow::PostCreation(); | |
76 | ||
77 | // NB: GetBestSize needs to know the style, otherwise it will assume | |
78 | // default font and if the user uses a different font, determined | |
79 | // best size will be different (typically, smaller) than the desired | |
80 | // size. This call ensure that a style is available at the time | |
81 | // GetBestSize is called. | |
82 | gtk_widget_ensure_style(m_widget); | |
83 | ||
84 | ApplyWidgetStyle(); | |
85 | SetInitialBestSize(size); | |
86 | } | |
87 | ||
88 | // ---------------------------------------------------------------------------- | |
89 | // wxControl dealing with labels | |
90 | // ---------------------------------------------------------------------------- | |
91 | ||
92 | void wxControl::SetLabel( const wxString &label ) | |
93 | { | |
94 | // keep the original string internally to be able to return it later (for | |
95 | // consistency with the other ports) | |
96 | m_label = label; | |
97 | ||
98 | InvalidateBestSize(); | |
99 | } | |
100 | ||
101 | wxString wxControl::GetLabel() const | |
102 | { | |
103 | return m_label; | |
104 | } | |
105 | ||
106 | void wxControl::GTKSetLabelForLabel(GtkLabel *w, const wxString& label) | |
107 | { | |
108 | // don't call the virtual function which might call this one back again | |
109 | wxControl::SetLabel(label); | |
110 | ||
111 | const wxString labelGTK = GTKConvertMnemonics(label); | |
112 | ||
113 | gtk_label_set_text_with_mnemonic(w, wxGTK_CONV(labelGTK)); | |
114 | } | |
115 | ||
116 | // ---------------------------------------------------------------------------- | |
117 | // GtkFrame helpers | |
118 | // | |
119 | // GtkFrames do in fact support mnemonics in GTK2+ but not through | |
120 | // gtk_frame_set_label, rather you need to use a custom label widget | |
121 | // instead (idea gleaned from the native gtk font dialog code in GTK) | |
122 | // ---------------------------------------------------------------------------- | |
123 | ||
124 | GtkWidget* wxControl::GTKCreateFrame(const wxString& label) | |
125 | { | |
126 | const wxString labelGTK = GTKConvertMnemonics(label); | |
127 | GtkWidget* labelwidget = gtk_label_new_with_mnemonic(wxGTK_CONV(labelGTK)); | |
128 | gtk_widget_show(labelwidget); // without this it won't show... | |
129 | ||
130 | GtkWidget* framewidget = gtk_frame_new(NULL); | |
131 | gtk_frame_set_label_widget(GTK_FRAME(framewidget), labelwidget); | |
132 | ||
133 | return framewidget; //note that the label is already set so you'll | |
134 | //only need to call wxControl::SetLabel afterwards | |
135 | } | |
136 | ||
137 | void wxControl::GTKSetLabelForFrame(GtkFrame *w, const wxString& label) | |
138 | { | |
139 | GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w)); | |
140 | GTKSetLabelForLabel(labelwidget, label); | |
141 | } | |
142 | ||
143 | void wxControl::GTKFrameApplyWidgetStyle(GtkFrame* w, GtkRcStyle* style) | |
144 | { | |
145 | gtk_widget_modify_style(GTK_WIDGET(w), style); | |
146 | gtk_widget_modify_style(gtk_frame_get_label_widget (w), style); | |
147 | } | |
148 | ||
149 | void wxControl::GTKFrameSetMnemonicWidget(GtkFrame* w, GtkWidget* widget) | |
150 | { | |
151 | GtkLabel* labelwidget = GTK_LABEL(gtk_frame_get_label_widget(w)); | |
152 | ||
153 | gtk_label_set_mnemonic_widget(labelwidget, widget); | |
154 | } | |
155 | ||
156 | // ---------------------------------------------------------------------------- | |
157 | // worker function implementing both GTKConvert/RemoveMnemonics() | |
158 | // | |
159 | // notice that under GTK+ 1 we only really need to support MNEMONICS_REMOVE as | |
160 | // it doesn't support mnemonics anyhow but this would make the code so ugly | |
161 | // that we do the same thing for GKT+ 1 and 2 | |
162 | // ---------------------------------------------------------------------------- | |
163 | ||
164 | enum MnemonicsFlag | |
165 | { | |
166 | MNEMONICS_REMOVE, | |
167 | MNEMONICS_CONVERT | |
168 | }; | |
169 | ||
170 | static wxString GTKProcessMnemonics(const wxString& label, MnemonicsFlag flag) | |
171 | { | |
172 | const size_t len = label.length(); | |
173 | wxString labelGTK; | |
174 | labelGTK.reserve(len); | |
175 | for ( size_t i = 0; i < len; i++ ) | |
176 | { | |
177 | wxChar ch = label[i]; | |
178 | ||
179 | switch ( ch ) | |
180 | { | |
181 | case wxT('&'): | |
182 | if ( i == len - 1 ) | |
183 | { | |
184 | // "&" at the end of string is an error | |
185 | wxLogDebug(wxT("Invalid label \"%s\"."), label.c_str()); | |
186 | break; | |
187 | } | |
188 | ||
189 | ch = label[++i]; // skip '&' itself | |
190 | switch ( ch ) | |
191 | { | |
192 | case wxT('&'): | |
193 | // special case: "&&" is not a mnemonic at all but just | |
194 | // an escaped "&" | |
195 | labelGTK += wxT('&'); | |
196 | break; | |
197 | ||
198 | case wxT('_'): | |
199 | if ( flag == MNEMONICS_CONVERT ) | |
200 | { | |
201 | // '_' can't be a GTK mnemonic apparently so | |
202 | // replace it with something similar | |
203 | labelGTK += wxT("_-"); | |
204 | break; | |
205 | } | |
206 | //else: fall through | |
207 | ||
208 | default: | |
209 | if ( flag == MNEMONICS_CONVERT ) | |
210 | labelGTK += wxT('_'); | |
211 | labelGTK += ch; | |
212 | } | |
213 | break; | |
214 | ||
215 | case wxT('_'): | |
216 | if ( flag == MNEMONICS_CONVERT ) | |
217 | { | |
218 | // escape any existing underlines in the string so that | |
219 | // they don't become mnemonics accidentally | |
220 | labelGTK += wxT("__"); | |
221 | break; | |
222 | } | |
223 | //else: fall through | |
224 | ||
225 | default: | |
226 | labelGTK += ch; | |
227 | } | |
228 | } | |
229 | ||
230 | return labelGTK; | |
231 | } | |
232 | ||
233 | /* static */ | |
234 | wxString wxControl::GTKRemoveMnemonics(const wxString& label) | |
235 | { | |
236 | return GTKProcessMnemonics(label, MNEMONICS_REMOVE); | |
237 | } | |
238 | ||
239 | /* static */ | |
240 | wxString wxControl::GTKConvertMnemonics(const wxString& label) | |
241 | { | |
242 | return GTKProcessMnemonics(label, MNEMONICS_CONVERT); | |
243 | } | |
244 | ||
245 | // ---------------------------------------------------------------------------- | |
246 | // wxControl styles (a.k.a. attributes) | |
247 | // ---------------------------------------------------------------------------- | |
248 | ||
249 | wxVisualAttributes wxControl::GetDefaultAttributes() const | |
250 | { | |
251 | return GetDefaultAttributesFromGTKWidget(m_widget, | |
252 | UseGTKStyleBase()); | |
253 | } | |
254 | ||
255 | ||
256 | #define SHIFT (8*(sizeof(short int)-sizeof(char))) | |
257 | ||
258 | // static | |
259 | wxVisualAttributes | |
260 | wxControl::GetDefaultAttributesFromGTKWidget(GtkWidget* widget, | |
261 | bool useBase, | |
262 | int state) | |
263 | { | |
264 | GtkStyle* style; | |
265 | wxVisualAttributes attr; | |
266 | ||
267 | style = gtk_rc_get_style(widget); | |
268 | if (!style) | |
269 | style = gtk_widget_get_default_style(); | |
270 | ||
271 | if (!style) | |
272 | { | |
273 | return wxWindow::GetClassDefaultAttributes(wxWINDOW_VARIANT_NORMAL); | |
274 | } | |
275 | ||
276 | if (state == -1) | |
277 | state = GTK_STATE_NORMAL; | |
278 | ||
279 | // get the style's colours | |
280 | attr.colFg = wxColour(style->fg[state].red >> SHIFT, | |
281 | style->fg[state].green >> SHIFT, | |
282 | style->fg[state].blue >> SHIFT); | |
283 | if (useBase) | |
284 | attr.colBg = wxColour(style->base[state].red >> SHIFT, | |
285 | style->base[state].green >> SHIFT, | |
286 | style->base[state].blue >> SHIFT); | |
287 | else | |
288 | attr.colBg = wxColour(style->bg[state].red >> SHIFT, | |
289 | style->bg[state].green >> SHIFT, | |
290 | style->bg[state].blue >> SHIFT); | |
291 | ||
292 | // get the style's font | |
293 | if ( !style->font_desc ) | |
294 | style = gtk_widget_get_default_style(); | |
295 | if ( style && style->font_desc ) | |
296 | { | |
297 | wxNativeFontInfo info; | |
298 | info.description = pango_font_description_copy(style->font_desc); | |
299 | attr.font = wxFont(info); | |
300 | } | |
301 | else | |
302 | { | |
303 | GtkSettings *settings = gtk_settings_get_default(); | |
304 | gchar *font_name = NULL; | |
305 | g_object_get ( settings, | |
306 | "gtk-font-name", | |
307 | &font_name, | |
308 | NULL); | |
309 | if (!font_name) | |
310 | attr.font = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT ); | |
311 | else | |
312 | attr.font = wxFont(wxString::FromAscii(font_name)); | |
313 | g_free (font_name); | |
314 | } | |
315 | ||
316 | return attr; | |
317 | } | |
318 | ||
319 | ||
320 | //static | |
321 | wxVisualAttributes | |
322 | wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNew_t widget_new, | |
323 | bool useBase, | |
324 | int state) | |
325 | { | |
326 | wxVisualAttributes attr; | |
327 | // NB: we need toplevel window so that GTK+ can find the right style | |
328 | GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL); | |
329 | GtkWidget* widget = widget_new(); | |
330 | gtk_container_add(GTK_CONTAINER(wnd), widget); | |
331 | attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state); | |
332 | gtk_widget_destroy(wnd); | |
333 | return attr; | |
334 | } | |
335 | ||
336 | //static | |
337 | wxVisualAttributes | |
338 | wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromStr_t widget_new, | |
339 | bool useBase, | |
340 | int state) | |
341 | { | |
342 | wxVisualAttributes attr; | |
343 | // NB: we need toplevel window so that GTK+ can find the right style | |
344 | GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL); | |
345 | GtkWidget* widget = widget_new(""); | |
346 | gtk_container_add(GTK_CONTAINER(wnd), widget); | |
347 | attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state); | |
348 | gtk_widget_destroy(wnd); | |
349 | return attr; | |
350 | } | |
351 | ||
352 | ||
353 | //static | |
354 | wxVisualAttributes | |
355 | wxControl::GetDefaultAttributesFromGTKWidget(wxGtkWidgetNewFromAdj_t widget_new, | |
356 | bool useBase, | |
357 | int state) | |
358 | { | |
359 | wxVisualAttributes attr; | |
360 | // NB: we need toplevel window so that GTK+ can find the right style | |
361 | GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL); | |
362 | GtkWidget* widget = widget_new(NULL); | |
363 | gtk_container_add(GTK_CONTAINER(wnd), widget); | |
364 | attr = GetDefaultAttributesFromGTKWidget(widget, useBase, state); | |
365 | gtk_widget_destroy(wnd); | |
366 | return attr; | |
367 | } | |
368 | ||
369 | #endif // wxUSE_CONTROLS |