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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/notebook.cpp
3 // Purpose:
4 // Author: Robert Roebling
5 // Id: $Id$
6 // Copyright: (c) 1998 Robert Roebling, 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_NOTEBOOK
14
15 #include "wx/notebook.h"
16
17 #ifndef WX_PRECOMP
18 #include "wx/intl.h"
19 #include "wx/log.h"
20 #include "wx/utils.h"
21 #include "wx/msgdlg.h"
22 #include "wx/bitmap.h"
23 #endif
24
25 #include "wx/imaglist.h"
26 #include "wx/fontutil.h"
27
28 #include "wx/gtk/private.h"
29
30 #include <gdk/gdkkeysyms.h>
31
32 // ----------------------------------------------------------------------------
33 // events
34 // ----------------------------------------------------------------------------
35
36 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
37 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
38
39 //-----------------------------------------------------------------------------
40 // data
41 //-----------------------------------------------------------------------------
42
43 extern bool g_blockEventsOnDrag;
44
45 //-----------------------------------------------------------------------------
46 // wxGtkNotebookPage
47 //-----------------------------------------------------------------------------
48
49 // VZ: this is rather ugly as we keep the pages themselves in an array (it
50 // allows us to have quite a few functions implemented in the base class)
51 // but the page data is kept in a separate list, so we must maintain them
52 // in sync manually... of course, the list had been there before the base
53 // class which explains it but it still would be nice to do something
54 // about this one day
55
56 class wxGtkNotebookPage: public wxObject
57 {
58 public:
59 wxGtkNotebookPage()
60 {
61 m_image = -1;
62 m_box = NULL;
63 }
64
65 wxString m_text;
66 int m_image;
67 GtkLabel *m_label;
68 GtkWidget *m_box; // in which the label and image are packed
69 };
70
71
72 #include "wx/listimpl.cpp"
73 WX_DEFINE_LIST(wxGtkNotebookPagesList)
74
75
76 //-----------------------------------------------------------------------------
77 // "switch_page"
78 //-----------------------------------------------------------------------------
79
80 extern "C" {
81 static void gtk_notebook_page_changing_callback( GtkNotebook *widget,
82 GtkNotebookPage *WXUNUSED(gpage),
83 guint page,
84 wxNotebook *notebook )
85 {
86 int old = gtk_notebook_get_current_page( widget );
87
88 if ( !notebook->SendPageChangingEvent(page) )
89 {
90 // program doesn't allow the page change
91 g_signal_stop_emission_by_name( widget, "switch_page" );
92 }
93 else
94 {
95 // the page change event also reports the old page
96 notebook->m_oldSelection = old;
97 }
98 }
99 }
100
101 extern "C" {
102 static void gtk_notebook_page_changed_callback( GtkNotebook * WXUNUSED(widget),
103 GtkNotebookPage *WXUNUSED(gpage),
104 guint WXUNUSED(page),
105 wxNotebook *notebook )
106 {
107 int old = notebook->m_oldSelection;
108 notebook->SendPageChangedEvent( old );
109 }
110 }
111
112 //-----------------------------------------------------------------------------
113 // InsertChild callback for wxNotebook
114 //-----------------------------------------------------------------------------
115
116 static void wxInsertChildInNotebook(wxWindow* parent, wxWindow* child)
117 {
118 // Hack Alert! (Part I): This sets the notebook as the parent of the child
119 // widget, and takes care of some details such as updating the state and
120 // style of the child to reflect its new location. We do this early
121 // because without it GetBestSize (which is used to set the initial size
122 // of controls if an explicit size is not given) will often report
123 // incorrect sizes since the widget's style context is not fully known.
124 // See bug #901694 for details
125 // (http://sourceforge.net/tracker/?func=detail&aid=901694&group_id=9863&atid=109863)
126 gtk_widget_set_parent(child->m_widget, parent->m_widget);
127
128 // NOTE: This should be considered a temporary workaround until we can
129 // work out the details and implement delaying the setting of the initial
130 // size of widgets until the size is really needed.
131 }
132
133 //-----------------------------------------------------------------------------
134 // wxNotebook
135 //-----------------------------------------------------------------------------
136
137 IMPLEMENT_DYNAMIC_CLASS(wxNotebook,wxBookCtrlBase)
138
139 BEGIN_EVENT_TABLE(wxNotebook, wxBookCtrlBase)
140 EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
141 END_EVENT_TABLE()
142
143 void wxNotebook::Init()
144 {
145 m_padding = 0;
146
147 m_imageList = (wxImageList *) NULL;
148 m_oldSelection = -1;
149 m_themeEnabled = true;
150 }
151
152 wxNotebook::wxNotebook()
153 {
154 Init();
155 }
156
157 wxNotebook::wxNotebook( wxWindow *parent, wxWindowID id,
158 const wxPoint& pos, const wxSize& size,
159 long style, const wxString& name )
160 {
161 Init();
162 Create( parent, id, pos, size, style, name );
163 }
164
165 wxNotebook::~wxNotebook()
166 {
167 DeleteAllPages();
168 }
169
170 bool wxNotebook::Create(wxWindow *parent, wxWindowID id,
171 const wxPoint& pos, const wxSize& size,
172 long style, const wxString& name )
173 {
174 m_insertCallback = wxInsertChildInNotebook;
175
176 if ( (style & wxBK_ALIGN_MASK) == wxBK_DEFAULT )
177 style |= wxBK_TOP;
178
179 if (!PreCreation( parent, pos, size ) ||
180 !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
181 {
182 wxFAIL_MSG( wxT("wxNoteBook creation failed") );
183 return false;
184 }
185
186
187 m_widget = gtk_notebook_new();
188
189 gtk_notebook_set_scrollable( GTK_NOTEBOOK(m_widget), 1 );
190
191 g_signal_connect (m_widget, "switch_page",
192 G_CALLBACK (gtk_notebook_page_changing_callback), this);
193
194 g_signal_connect_after (m_widget, "switch_page",
195 G_CALLBACK (gtk_notebook_page_changed_callback), this);
196
197 m_parent->DoAddChild( this );
198
199 if (m_windowStyle & wxBK_RIGHT)
200 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_RIGHT );
201 if (m_windowStyle & wxBK_LEFT)
202 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_LEFT );
203 if (m_windowStyle & wxBK_BOTTOM)
204 gtk_notebook_set_tab_pos( GTK_NOTEBOOK(m_widget), GTK_POS_BOTTOM );
205
206 PostCreation(size);
207
208 return true;
209 }
210
211 int wxNotebook::GetSelection() const
212 {
213 wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
214
215 return gtk_notebook_get_current_page( GTK_NOTEBOOK(m_widget) );
216 }
217
218 wxString wxNotebook::GetPageText( size_t page ) const
219 {
220 wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid notebook") );
221
222 wxGtkNotebookPage* nb_page = GetNotebookPage(page);
223 if (nb_page)
224 return nb_page->m_text;
225 else
226 return wxEmptyString;
227 }
228
229 int wxNotebook::GetPageImage( size_t page ) const
230 {
231 wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
232
233 wxGtkNotebookPage* nb_page = GetNotebookPage(page);
234 if (nb_page)
235 return nb_page->m_image;
236 else
237 return -1;
238 }
239
240 wxGtkNotebookPage* wxNotebook::GetNotebookPage( int page ) const
241 {
242 wxCHECK_MSG( m_widget != NULL, (wxGtkNotebookPage*) NULL, wxT("invalid notebook") );
243
244 wxCHECK_MSG( page < (int)m_pagesData.GetCount(), (wxGtkNotebookPage*) NULL, wxT("invalid notebook index") );
245
246 return m_pagesData.Item(page)->GetData();
247 }
248
249 int wxNotebook::DoSetSelection( size_t page, int flags )
250 {
251 wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid notebook") );
252
253 wxCHECK_MSG( page < m_pagesData.GetCount(), -1, wxT("invalid notebook index") );
254
255 int selOld = GetSelection();
256
257 if ( !(flags & SetSelection_SendEvent) )
258 {
259 g_signal_handlers_block_by_func(m_widget,
260 (gpointer)gtk_notebook_page_changing_callback, this);
261
262 g_signal_handlers_block_by_func(m_widget,
263 (gpointer)gtk_notebook_page_changed_callback, this);
264 }
265
266 gtk_notebook_set_current_page( GTK_NOTEBOOK(m_widget), page );
267
268 if ( !(flags & SetSelection_SendEvent) )
269 {
270 g_signal_handlers_unblock_by_func(m_widget,
271 (gpointer)gtk_notebook_page_changing_callback, this);
272
273 g_signal_handlers_unblock_by_func(m_widget,
274 (gpointer)gtk_notebook_page_changed_callback, this);
275 }
276
277 wxNotebookPage *client = GetPage(page);
278 if ( client )
279 client->SetFocus();
280
281 return selOld;
282 }
283
284 bool wxNotebook::SetPageText( size_t page, const wxString &text )
285 {
286 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid notebook") );
287
288 wxGtkNotebookPage* nb_page = GetNotebookPage(page);
289
290 wxCHECK_MSG( nb_page, false, wxT("SetPageText: invalid page index") );
291
292 nb_page->m_text = text;
293
294 gtk_label_set_text( nb_page->m_label, wxGTK_CONV( nb_page->m_text ) );
295
296 return true;
297 }
298
299 bool wxNotebook::SetPageImage( size_t page, int image )
300 {
301 /* HvdH 28-12-98: now it works, but it's a bit of a kludge */
302
303 wxGtkNotebookPage* nb_page = GetNotebookPage(page);
304
305 if (!nb_page) return false;
306
307 /* Optimization posibility: return immediately if image unchanged.
308 * Not enabled because it may break existing (stupid) code that
309 * manipulates the imagelist to cycle images */
310
311 /* if (image == nb_page->m_image) return true; */
312
313 /* For different cases:
314 1) no image -> no image
315 2) image -> no image
316 3) no image -> image
317 4) image -> image */
318
319 if (image == -1 && nb_page->m_image == -1)
320 return true; /* Case 1): Nothing to do. */
321
322 GtkWidget *pixmapwid = (GtkWidget*) NULL;
323
324 if (nb_page->m_image != -1)
325 {
326 /* Case 2) or 4). There is already an image in the gtkhbox. Let's find it */
327
328 GList *child = gtk_container_get_children(GTK_CONTAINER(nb_page->m_box));
329 while (child)
330 {
331 if (GTK_IS_IMAGE(child->data))
332 {
333 pixmapwid = GTK_WIDGET(child->data);
334 break;
335 }
336 child = child->next;
337 }
338
339 /* We should have the pixmap widget now */
340 wxASSERT(pixmapwid != NULL);
341
342 if (image == -1)
343 {
344 /* If there's no new widget, just remove the old from the box */
345 gtk_container_remove(GTK_CONTAINER(nb_page->m_box), pixmapwid);
346 nb_page->m_image = -1;
347
348 return true; /* Case 2) */
349 }
350 }
351
352 /* Only cases 3) and 4) left */
353 wxASSERT( m_imageList != NULL ); /* Just in case */
354
355 /* Construct the new pixmap */
356 const wxBitmap *bmp = m_imageList->GetBitmapPtr(image);
357
358 if (pixmapwid == NULL)
359 {
360 /* Case 3) No old pixmap. Create a new one and prepend it to the hbox */
361 pixmapwid = gtk_image_new_from_pixbuf(bmp->GetPixbuf());
362
363 /* CHECKME: Are these pack flags okay? */
364 gtk_box_pack_start(GTK_BOX(nb_page->m_box), pixmapwid, FALSE, FALSE, m_padding);
365 gtk_widget_show(pixmapwid);
366 }
367 else
368 {
369 /* Case 4) Simply replace the pixmap */
370 gtk_image_set_from_pixbuf((GtkImage*)pixmapwid, bmp->GetPixbuf());
371 }
372
373 nb_page->m_image = image;
374
375 return true;
376 }
377
378 void wxNotebook::SetPageSize( const wxSize &WXUNUSED(size) )
379 {
380 wxFAIL_MSG( wxT("wxNotebook::SetPageSize not implemented") );
381 }
382
383 void wxNotebook::SetPadding( const wxSize &padding )
384 {
385 wxCHECK_RET( m_widget != NULL, wxT("invalid notebook") );
386
387 m_padding = padding.GetWidth();
388
389 int i;
390 for (i=0; i<int(GetPageCount()); i++)
391 {
392 wxGtkNotebookPage* nb_page = GetNotebookPage(i);
393 wxASSERT(nb_page != NULL);
394
395 if (nb_page->m_image != -1)
396 {
397 // gtk_box_set_child_packing sets padding on BOTH sides
398 // icon provides left padding, label provides center and right
399 int image = nb_page->m_image;
400 SetPageImage(i,-1);
401 SetPageImage(i,image);
402 }
403 wxASSERT(nb_page->m_label);
404 gtk_box_set_child_packing(GTK_BOX(nb_page->m_box),
405 GTK_WIDGET(nb_page->m_label),
406 FALSE, FALSE, m_padding, GTK_PACK_END);
407 }
408 }
409
410 void wxNotebook::SetTabSize(const wxSize& WXUNUSED(sz))
411 {
412 wxFAIL_MSG( wxT("wxNotebook::SetTabSize not implemented") );
413 }
414
415 bool wxNotebook::DeleteAllPages()
416 {
417 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid notebook") );
418
419 while (m_pagesData.GetCount() > 0)
420 DeletePage( m_pagesData.GetCount()-1 );
421
422 wxASSERT_MSG( GetPageCount() == 0, _T("all pages must have been deleted") );
423
424 InvalidateBestSize();
425 return wxNotebookBase::DeleteAllPages();
426 }
427
428 wxNotebookPage *wxNotebook::DoRemovePage( size_t page )
429 {
430 // We cannot remove the page yet, as GTK sends the "switch_page"
431 // signal before it has removed the notebook-page from its
432 // corresponding list. Thus, if we were to remove the page from
433 // m_pages at this point, the two lists of pages would be out
434 // of sync during the PAGE_CHANGING/PAGE_CHANGED events.
435 wxNotebookPage *client = GetPage(page);
436 if ( !client )
437 return NULL;
438
439 gtk_widget_ref( client->m_widget );
440 gtk_widget_unrealize( client->m_widget );
441
442 // we don't need to unparent the client->m_widget; GTK+ will do
443 // that for us (and will throw a warning if we do it!)
444 gtk_notebook_remove_page( GTK_NOTEBOOK(m_widget), page );
445
446 // It's safe to remove the page now.
447 wxASSERT_MSG(GetPage(page) == client, wxT("pages changed during delete"));
448 wxNotebookBase::DoRemovePage(page);
449
450 wxGtkNotebookPage* p = GetNotebookPage(page);
451 m_pagesData.DeleteObject(p);
452 delete p;
453
454 return client;
455 }
456
457 bool wxNotebook::InsertPage( size_t position,
458 wxNotebookPage* win,
459 const wxString& text,
460 bool select,
461 int imageId )
462 {
463 wxCHECK_MSG( m_widget != NULL, false, wxT("invalid notebook") );
464
465 wxCHECK_MSG( win->GetParent() == this, false,
466 wxT("Can't add a page whose parent is not the notebook!") );
467
468 wxCHECK_MSG( position <= GetPageCount(), false,
469 _T("invalid page index in wxNotebookPage::InsertPage()") );
470
471 // Hack Alert! (Part II): See above in wxInsertChildInNotebook callback
472 // why this has to be done. NOTE: using gtk_widget_unparent here does not
473 // work as it seems to undo too much and will cause errors in the
474 // gtk_notebook_insert_page below, so instead just clear the parent by
475 // hand here.
476 win->m_widget->parent = NULL;
477
478 if (m_themeEnabled)
479 win->SetThemeEnabled(true);
480
481 GtkNotebook *notebook = GTK_NOTEBOOK(m_widget);
482
483 wxGtkNotebookPage *nb_page = new wxGtkNotebookPage();
484
485 if ( position == GetPageCount() )
486 m_pagesData.Append( nb_page );
487 else
488 m_pagesData.Insert( position, nb_page );
489
490 m_pages.Insert(win, position);
491
492 // set the label image and text
493 // this must be done before adding the page, as GetPageText
494 // and GetPageImage will otherwise return wrong values in
495 // the page-changed event that results from inserting the
496 // first page.
497 nb_page->m_image = imageId;
498 nb_page->m_text = wxStripMenuCodes(text);
499
500 nb_page->m_box = gtk_hbox_new( FALSE, 1 );
501 gtk_container_set_border_width((GtkContainer*)nb_page->m_box, 2);
502
503 gtk_notebook_insert_page(notebook, win->m_widget, nb_page->m_box, position);
504
505 if (imageId != -1)
506 {
507 wxASSERT( m_imageList != NULL );
508
509 const wxBitmap *bmp = m_imageList->GetBitmapPtr(imageId);
510 GtkWidget* pixmapwid = gtk_image_new_from_pixbuf(bmp->GetPixbuf());
511 gtk_box_pack_start(GTK_BOX(nb_page->m_box), pixmapwid, FALSE, FALSE, m_padding);
512 gtk_widget_show(pixmapwid);
513 }
514
515 /* set the label text */
516 nb_page->m_label = GTK_LABEL( gtk_label_new(wxGTK_CONV(nb_page->m_text)) );
517 gtk_box_pack_end( GTK_BOX(nb_page->m_box), GTK_WIDGET(nb_page->m_label), FALSE, FALSE, m_padding );
518
519 /* apply current style */
520 GtkRcStyle *style = CreateWidgetStyle();
521 if ( style )
522 {
523 gtk_widget_modify_style(GTK_WIDGET(nb_page->m_label), style);
524 gtk_rc_style_unref(style);
525 }
526
527 /* show the label */
528 gtk_widget_show( GTK_WIDGET(nb_page->m_label) );
529
530 if (select && (m_pagesData.GetCount() > 1))
531 {
532 SetSelection( position );
533 }
534
535 InvalidateBestSize();
536 return true;
537 }
538
539 // helper for HitTest(): check if the point lies inside the given widget which
540 // is the child of the notebook whose position and border size are passed as
541 // parameters
542 static bool
543 IsPointInsideWidget(const wxPoint& pt, GtkWidget *w,
544 gint x, gint y, gint border = 0)
545 {
546 return
547 (pt.x >= w->allocation.x - x - border) &&
548 (pt.x <= w->allocation.x - x + border + w->allocation.width) &&
549 (pt.y >= w->allocation.y - y - border) &&
550 (pt.y <= w->allocation.y - y + border + w->allocation.height);
551 }
552
553 int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
554 {
555 const gint x = m_widget->allocation.x;
556 const gint y = m_widget->allocation.y;
557
558 const size_t count = GetPageCount();
559 size_t i = 0;
560
561 GtkNotebook * notebook = GTK_NOTEBOOK(m_widget);
562 if (gtk_notebook_get_scrollable(notebook))
563 i = g_list_position( notebook->children, notebook->first_tab );
564
565 for ( ; i < count; i++ )
566 {
567 wxGtkNotebookPage* nb_page = GetNotebookPage(i);
568 GtkWidget *box = nb_page->m_box;
569
570 const gint border = gtk_container_get_border_width(GTK_CONTAINER(box));
571
572 if ( IsPointInsideWidget(pt, box, x, y, border) )
573 {
574 // ok, we're inside this tab -- now find out where, if needed
575 if ( flags )
576 {
577 GtkWidget *pixmap = NULL;
578
579 GList *children = gtk_container_get_children(GTK_CONTAINER(box));
580 for ( GList *child = children; child; child = child->next )
581 {
582 if (GTK_IS_IMAGE(child->data))
583 {
584 pixmap = GTK_WIDGET(child->data);
585 break;
586 }
587 }
588
589 if ( children )
590 g_list_free(children);
591
592 if ( pixmap && IsPointInsideWidget(pt, pixmap, x, y) )
593 {
594 *flags = wxBK_HITTEST_ONICON;
595 }
596 else if ( IsPointInsideWidget(pt, GTK_WIDGET(nb_page->m_label), x, y) )
597 {
598 *flags = wxBK_HITTEST_ONLABEL;
599 }
600 else
601 {
602 *flags = wxBK_HITTEST_ONITEM;
603 }
604 }
605
606 return i;
607 }
608 }
609
610 if ( flags )
611 {
612 *flags = wxBK_HITTEST_NOWHERE;
613 wxWindowBase * page = GetCurrentPage();
614 if ( page )
615 {
616 // rect origin is in notebook's parent coordinates
617 wxRect rect = page->GetRect();
618
619 // adjust it to the notebook's coordinates
620 wxPoint pos = GetPosition();
621 rect.x -= pos.x;
622 rect.y -= pos.y;
623 if ( rect.Contains( pt ) )
624 *flags |= wxBK_HITTEST_ONPAGE;
625 }
626 }
627
628 return wxNOT_FOUND;
629 }
630
631 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
632 {
633 if (event.IsWindowChange())
634 AdvanceSelection( event.GetDirection() );
635 else
636 event.Skip();
637 }
638
639 #if wxUSE_CONSTRAINTS
640
641 // override these 2 functions to do nothing: everything is done in OnSize
642 void wxNotebook::SetConstraintSizes( bool WXUNUSED(recurse) )
643 {
644 // don't set the sizes of the pages - their correct size is not yet known
645 wxControl::SetConstraintSizes(false);
646 }
647
648 bool wxNotebook::DoPhase( int WXUNUSED(nPhase) )
649 {
650 return true;
651 }
652
653 #endif
654
655 void wxNotebook::DoApplyWidgetStyle(GtkRcStyle *style)
656 {
657 gtk_widget_modify_style(m_widget, style);
658 size_t cnt = m_pagesData.GetCount();
659 for (size_t i = 0; i < cnt; i++)
660 gtk_widget_modify_style(GTK_WIDGET(GetNotebookPage(i)->m_label), style);
661 }
662
663 GdkWindow *wxNotebook::GTKGetWindow(wxArrayGdkWindows& windows) const
664 {
665 windows.push_back(m_widget->window);
666 windows.push_back(GTK_NOTEBOOK(m_widget)->event_window);
667
668 return NULL;
669 }
670
671 // static
672 wxVisualAttributes
673 wxNotebook::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
674 {
675 return GetDefaultAttributesFromGTKWidget(gtk_notebook_new);
676 }
677
678 //-----------------------------------------------------------------------------
679 // wxNotebookEvent
680 //-----------------------------------------------------------------------------
681
682 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)
683
684 #endif