summaryrefslogtreecommitdiffstats
path: root/tdemdi/tdemdichildview.h
blob: 66bd913cef5212e27ccd0aad73a58e3b5539828f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
//----------------------------------------------------------------------------
//    filename             : tdemdichildview.h
//----------------------------------------------------------------------------
//    Project              : KDE MDI extension
//
//    begin                : 07/1999       by Szymon Stefanek as part of kvirc
//                                         (an IRC application)
//    changes              : 09/1999       by Falk Brettschneider to create an
//                           - 06/2000     stand-alone Qt extension set of
//                                         classes and a Qt-based library
//                           2000-2003     maintained by the KDevelop project
//    patches              : 02/2000       by Massimo Morin (mmorin@schedsys.com)
//                           */2000        by Lars Beikirch (Lars.Beikirch@gmx.net)
//                           02/2001       by Eva Brucherseifer (eva@rt.e-technik.tu-darmstadt.de)
//                           01/2003       by Jens Zurheide (jens.zurheide@gmx.de)
//
//    copyright            : (C) 1999-2003 by Falk Brettschneider
//                                         and
//                                         Szymon Stefanek (stefanek@tin.it)
//    email                :  falkbr@kdevelop.org (Falk Brettschneider)
//----------------------------------------------------------------------------
//
//----------------------------------------------------------------------------
//
//    This program is free software; you can redistribute it and/or modify
//    it under the terms of the GNU Library General Public License as
//    published by the Free Software Foundation; either version 2 of the
//    License, or (at your option) any later version.
//
//----------------------------------------------------------------------------
#ifndef _TDEMDI_CHILD_VIEW_H_
#define _TDEMDI_CHILD_VIEW_H_

#include <tqwidget.h>
#include <tqpixmap.h>
#include <tqrect.h>
#include <tqapplication.h>
#include <tqdatetime.h>

#include "tdemdichildfrm.h"

class KMdiChildViewPrivate;

/**
  * @short Base class for all your special view windows.
  *
  * Base class for all MDI view widgets. KMdi stores additional information in this class
  * to handle the attach/detach mechanism and such things.
  *
  * All such windows 'lives' attached to a KMdiChildFrm widget
  * managed by KMdiChildArea, or detached (managed by the window manager.)
  * So remember that the KMdiChildView::parent pointer may change, and may be 0L, too.
  *
  * There are 2 possibilities for you to put your widgets under MDI control:
  *
  * Either you inherit all the views from KMdiChildView:
  *   \code
  *   class MyMdiWidget : public KMdiChildView
  *   { .... };
  *   ...
  *   MyMdiWidget w;
  *   mainframe->addWindow(w, flags);
  *   \endcode
  *
  * or you wrap them by a KMdiChildView somehow like this:
  *
  * \code
  * void DocViewMan::addKMdiFrame(TQWidget* pNewView, bool bShow, const TQPixmap& icon)
  * {
  *   // cover it by a KMdi childview and add that MDI system
  *   KMdiChildView* pMDICover = new KMdiChildView( pNewView->caption());
  *   pMDICover->setIcon(icon);
  *   m_MDICoverList.append( pMDICover);
  *   TQBoxLayout* pLayout = new TQHBoxLayout( pMDICover, 0, -1, "layout");
  *   pNewView->reparent( pMDICover, TQPoint(0,0));
  *   pLayout->addWidget( pNewView);
  *   pMDICover->setName( pNewView->name());
  *   // captions
  *   TQString shortName = pNewView->caption();
  *   int length = shortName.length();
  *   shortName = shortName.right(length - (shortName.findRev('/') +1));
  *   pMDICover->setTabCaption( shortName);
  *   pMDICover->setCaption(pNewView->caption());
  *
  *   // fake a viewActivated to update the currentEditView/currentBrowserView pointers _before_ adding to MDI control
  *   slot_viewActivated( pMDICover);
  *
  *   // take it under MDI mainframe control (note: this triggers also a setFocus())
  *   int flags;
  *   if (bShow) {
  *     flags = KMdi::StandardAdd;
  *   }
  *   else {
  *     flags = KMdi::Hide;
  *   }
  *   // set the accelerators for Toplevel MDI mode (each toplevel window needs its own accels
  *   connect( m_pParent, TQT_SIGNAL(childViewIsDetachedNow(TQWidget*)), this, TQT_SLOT(initKeyAccel(TQWidget*)) );
  *
  *   m_pParent->addWindow( pMDICover, flags);
  *   // correct the default settings of KMdi ('cause we haven't a tab order for subwidget focuses)
  *   pMDICover->setFirstFocusableChildWidget(0L);
  *   pMDICover->setLastFocusableChildWidget(0L);
  * }
  * \endcode
  *
  */

class KMDI_EXPORT KMdiChildView : public TQWidget
{
	friend class KMdiMainFrm;
	friend class KMdiChildFrm;
	TQ_OBJECT

	// attributes
protected:
	/**
	 * See KMdiChildView::caption
	 */
	TQString m_szCaption;
	
	/**
	 * See KMdiChildView::tabCaption
	 */
	TQString m_sTabCaption;
	
	/**
	 * See KMdiChildView::focusedChildWidget
	 */
	TQWidget* m_focusedChildWidget;
	
	/**
	 * See KMdiChildView::setFirstFocusableChildWidget
	 */
	TQWidget* m_firstFocusableChildWidget;
	
	/**
	 * See KMdiChildView::setLastFocusableChildWidget
	 */
	TQWidget* m_lastFocusableChildWidget;
	
	/**
	 * Every child view window has an temporary ID in the Window menu of the main frame.
	 */
	int m_windowMenuID;
	
	/**
	 * Holds a temporary information about if the MDI view state has changed but is not processed yet (pending state).
	 * For example it could be that a 'maximize' is pending, if this variable is true.
	 */
	bool m_stateChanged;

	/**
	 * Holds the time when this view was activated (not only displayed) for the last time.
	 */
	TQDateTime m_time;

private:
	/**
	 * Internally used as indicator whether this KMdiChildView is treated as document view or as tool view.
	 */
	bool m_bToolView;
	
	/**
	 * Internally used by KMdiMainFrm to store a temporary information that the method
	 * activate() is unnecessary and that it can by escaped.
	 * This saves from unnecessary calls when activate is called directly.
	 */
	bool m_bInterruptActivation;
	
	/**
	 * Internally used to prevent cycles between KMdiMainFrm::activateView() and KMdiChildView::activate().
	 */
	bool m_bMainframesActivateViewIsPending;
	
	/**
	 * Internally used to check if there is a focus in event pending
	 */
	bool m_bFocusInEventIsPending;

	// methods
public:
	/**
	 * Constructor
	 */
	KMdiChildView( const TQString& caption, TQWidget* parentWidget = 0L, const char* name = 0L, WFlags f = 0 );
	
	/**
	 * Constructor 
	 * sets "Unnamed" as default caption
	 */
	KMdiChildView( TQWidget* parentWidget = 0L, const char* name = 0L, WFlags f = 0 );
	
	/**
	 * Destructor
	 */
	~KMdiChildView();
	
	/**
	 * This method does the same as focusInEvent(). That's why it is a replacement for the setFocus() call. It makes
	 * sense if you for instance want to focus (I mean raise and activate) this view although the real focus is
	 * in another toplevel widget. focusInEvent() will never get called in that case and your setFocus() call for this
	 * widget would fail without any effect.
	 * Use this method with caution, it always raises the view and pushes the taskbar button. Also when the focus is
	 * still on another MDI view in the same toplevel window where this is located!
	 */
	void activate();
	
	/**
	 * Memorizes the first focusable child widget of this widget
	 */
	void setFirstFocusableChildWidget( TQWidget* );
	
	/**
	 * Memorizes the last focusable child widget of this widget
	 */
	void setLastFocusableChildWidget( TQWidget* );
	
	/**
	 * Returns the current focused child widget of this widget
	 */
	TQWidget* focusedChildWidget();
	
	/**
	 * Returns true if the MDI view is a child window within the MDI mainframe widget
	 * or false if the MDI view is in toplevel mode
	 */
	bool isAttached() const { return ( mdiParent() != 0L ); }
	
	/**
	 * Returns the caption of the child window (different from the caption on the button in the taskbar)
	 */
	const TQString& caption() const { return m_szCaption; }
	
	/**
	 * Returns the caption of the button on the taskbar
	 */
	const TQString& tabCaption() const { return m_sTabCaption; }
	
	/**
	 * Sets the window caption string...
	 * Calls updateButton on the taskbar button if it has been set.
	 */
	virtual void setCaption( const TQString& szCaption );
	
	/**
	 * Sets the caption of the button referring to this window
	 */
	virtual void setTabCaption( const TQString& caption );
	
	/**
	 * Sets the caption of both the window and the button on the taskbar
	 */
	virtual void setMDICaption( const TQString &caption );
	
	/**
	 * Returns the KMdiChildFrm parent widget (or 0 if the window is not attached)
	 */
	KMdiChildFrm *mdiParent() const;
	
	/**
	 * Tells if the window is minimized when attached to the Mdi manager,
	 * or if it is VISIBLE when 'floating'.
	 */
	bool isMinimized() const;
	
	/**
	 * Tells if the window is minimized when attached to the Mdi manager,
	 * otherwise returns false.
	 */
	bool isMaximized() const;
	
	/**
	 * Returns the geometry of this MDI child window as TQWidget::geometry() does.
	 */
	TQRect internalGeometry() const;
	
	/**
	 * Sets the geometry of the client area of this MDI child window. The
	 * top left position of the argument is the position of the top left point
	 * of the client area in its parent coordinates and the arguments width
	 * and height is the width and height of the client area. Please note: This
	 * differs from the behavior of TQWidget::setGeometry()!
	 */
	void setInternalGeometry( const TQRect& newGeomety );
	
	/**
	 * Returns the frame geometry of this window or of the parent if there is any...
	 */
	TQRect externalGeometry() const;
	
	/**
	 * Sets the geometry of the frame of this MDI child window. The top left
	 * position of the argument is the position of the top left point of the
	 * frame in its parent coordinates and the arguments width and height is
	 * the width and height of the widget frame. Please note: This differs
	 * from the behavior of TQWidget::setGeometry()!
	 */
	void setExternalGeometry( const TQRect& newGeomety );
	
	/**
	 * You should override this function in the derived class.
	 */
	virtual TQPixmap* myIconPtr();
	
	/**
	 * Minimizes this window when it is attached to the Mdi manager.
	 * Otherwise has no effect
	 */
	virtual void minimize( bool bAnimate );
	
	/**
	 * Maximizes this window when it is attached to the Mdi manager.
	 * Otherwise has no effect
	 */
	virtual void maximize( bool bAnimate );
	
	/**
	 * Returns the geometry that will be restored by calling restore().
	 */
	TQRect restoreGeometry();
	
	/**
	 * Sets the geometry that will be restored by calling restore().
	 */
	void setRestoreGeometry( const TQRect& newRestGeo );
	
	/**
	 * Switches interposing in event loop of all current child widgets off.
	 */
	void removeEventFilterForAllChildren();
	
	/**
	 * Internally used for setting an ID for the 'Window' menu entry
	 */
	void setWindowMenuID( int id );
	
	/**
	 * Sets the minimum size of the widget to w by h pixels.
	 * It extends it base clase method in a way that the minimum size of
	 * its childframe (if there is one) will be set, additionally.
	 */
	virtual void setMinimumSize ( int minw, int minh );
	
	/**
	 * Sets the maximum size of the widget to w by h pixels.
	 * It extends it base clase method in a way that the maximum size of
	 * its childframe (if there is one) will be set, additionally.
	 */
	virtual void setMaximumSize ( int maxw, int maxh );
	
	/**
	 * Returns if this is added as MDI tool-view
	 */
	inline bool isToolView() const { return m_bToolView; }
	
	/**
	 * Remember the current time
	 */
	inline void updateTimeStamp()
	{
		m_time.setDate( TQDate::currentDate() );
		m_time.setTime( TQTime::currentTime() );
	}
	
	/**
	 * Recall a previously remembered time, i.e. the value of m_time
	 */
	inline const TQDateTime& getTimeStamp() const { return m_time; }

public slots:
	/**
	* Attaches this window to the Mdi manager.
	* It calls the KMdiMainFrm attachWindow function , so if you have a pointer
	* to this KMdiMainFrm you'll be faster calling that function.
	*/
	virtual void attach();
	
	/**
	 * Detaches this window from the Mdi manager.
	 * It calls the KMdiMainFrm detachWindow function , so if you have a pointer
	 * to this KMdiMainFrm you'll be faster calling that function.
	 */
	virtual void detach();
	
	/**
	 * Mimimizes the MDI view. If attached, the covering childframe widget is minimized (only a mini widget
	 * showing the caption bar and the system buttons will remain visible). If detached, it will use the
	 * minimize of the underlying system ( TQWidget::showMinimized ).
	 */
	virtual void minimize();
	
	/**
	 * Maximizes the MDI view. If attached, this widget will fill the whole MDI view area widget. The system buttons
	 * move to the main menubar (if set by KMdiMainFrm::setMenuForSDIModeSysButtons ).
	 * If detached, it will use the minimize of the underlying system ( TQWidget::showMaximized ).
	 */
	virtual void maximize();
	
	/**
	 * Restores this window to its normal size. Also known as 'normalize'.
	 */
	virtual void restore();
	
	/**
	 * Internally called, if KMdiMainFrm::attach is called.
	 * Actually, only the caption of the covering childframe is set.
	 */
	virtual void youAreAttached( KMdiChildFrm *lpC );
	
	/**
	 * Internally called, if KMdiMainFrm::detach is called.
	 * Some things for going toplevel will be done here.
	 */
	virtual void youAreDetached();
	
	/**
	 * Called if someone click on the "Window" menu item for this child frame window
	 */
	virtual void slot_clickedInWindowMenu();
	
	/**
	 * Called if someone click on the "Dock/Undock..." menu item for this child frame window
	 */
	virtual void slot_clickedInDockMenu();
	
	/**
	 * Calls TQWidget::show but also for it's parent widget if attached
	 */
	virtual void show();
	
	/**
	 * Calls TQWidget::hide() or it's parent widget hide() if attached
	 */
	virtual void hide();
	
	/**
	 * Calls TQWidget::raise() or it's parent widget raise() if attached
	 */
	virtual void raise();
	
	/**
	 * Overridden from its base class method. Emits a signal KMdiChildView::isMinimizedNow , additionally.
	 * Note that this method is not used by an external windows manager call on system minimizing.
	 */
	virtual void showMinimized();
	
	/**
	 * Overridden from its base class method. Emits a signal KMdiChildView::isMaximizedNow , additionally.
	 * Note that this method is not used by an external windows manager call on system maximizing.
	 */
	virtual void showMaximized();
	
	/**
	 * Overridden from its base class method. Emits a signal KMdiChildView::isRestoredNow , additionally.
	 * Note that this method is not used by an external windows manager call on system normalizing.
	 */
	virtual void showNormal();
	

protected:
	/**
	 * Ignores the event and calls KMdiMainFrm::childWindowCloseRequest instead. This is because the
	 * mainframe has control over the views. Therefore the MDI view has to request the mainframe for a close.
	 */
	virtual void closeEvent( TQCloseEvent *e );
	
	/**
	 * It only catches TQEvent::KeyPress events there. If a Qt::Key_Tab is pressed, the internal MDI focus
	 * handling is called. That means if the last focusable child widget of this is called, it will jump to the
	 * first focusable child widget of this.
	 * See KMdiChildView::setFirstFocusableChildWidget and KMdiChildView::lastFirstFocusableChildWidget
	 */
	virtual bool eventFilter( TQObject *obj, TQEvent *e );
	
	/**
	 * If attached, the childframe will be activated and the MDI taskbar button will be pressed. Additionally, the
	 * memorized old focused child widget of this is focused again.
	 * Sends the focusInEventOccurs signal before changing the focus and the
	 * gotFocus signal after changing the focus.
	 */
	virtual void focusInEvent( TQFocusEvent *e );
	
	/**
	 * Send the lostFocus signal
	 */
	virtual void focusOutEvent( TQFocusEvent *e );
	
	/**
	 * Internally used for the minimize/maximize/restore mechanism when in attach mode.
	 */
	virtual void resizeEvent( TQResizeEvent *e );

	void trackIconAndCaptionChanges( TQWidget *view );

protected slots:
	void slot_childDestroyed();

signals:
	/**
	 * Internally used by KMdiChildView::attach to send it as command to the mainframe.
	 */
	void attachWindow( KMdiChildView*, bool );
	
	/**
	 * Internally used by KMdiChildView::detach to send it as command to the mainframe.
	 */
	void detachWindow( KMdiChildView*, bool );
	
	/**
	 * Is sent when this MDI child view is going to receive focus (before actually changing the focus).
	 * Internally used to send information to the mainframe that this MDI child view is focused.
	 * See KMdiChildView::focusInEvent
	 */
	void focusInEventOccurs( KMdiChildView* );
	
	/**
	 * Is sent when this MDI child has received the focus (after actually changing the focus).
	 * See KMdiChildView::focusInEvent
	 */
	void gotFocus( KMdiChildView* );
	
	/**
	 * Is sent when this MDI child was set to the activate view of all MDI views (after actually changing the focus).
	 * See KMdiChildView::activate
	 */
	void activated( KMdiChildView* );
	
	/** Is sent when this MDI child view has lost the focus (after actually changing the focus).
	 *  See KMdiChildView::focusOutEvent
	 */
	void lostFocus( KMdiChildView* );
	
	/** Is sent when this MDI child view was deactivated (after actually changing the focus).
	 *  See KMdiChildView::focusOutEvent
	 */
	void deactivated( KMdiChildView* );
	
	/**
	 * Internally used to send information to the mainframe that this MDI child view wants to be closed.
	 * See KMdiChildView::closeEvent and KMdiMainFrm::closeWindow
	 */
	void childWindowCloseRequest( KMdiChildView* );
	
	/**
	 * Emitted when the window caption is changed via KMdiChildView::setCaption or KMdiChildView::setMDICaption
	 */
	void windowCaptionChanged( const TQString& );
	
	/**
	 * Emitted  when the window caption is changed via KMdiChildView::setTabCaption or KMdiChildView::setMDICaption
	 */
	void tabCaptionChanged( const TQString& );
	
	/**
	 * Internally used to send information to the mainframe that this MDI view is maximized now.
	 * Usually, the mainframe switches system buttons.
	 */
	void mdiParentNowMaximized( bool );
	
	/**
	 * Is automatically emitted when slot_clickedInWindowMenu is called
	 */
	void clickedInWindowMenu( int );
	
	/**
	 * Is automatically emitted when slot_clickedInDockMenu is called
	 */
	void clickedInDockMenu( int );
	
	/**
	 * Signals this has been maximized
	 */
	void isMaximizedNow();
	
	/**
	 * Signals this has been minimized
	 */
	void isMinimizedNow();
	
	/**
	 * Signals this has been restored (normalized)
	 */
	void isRestoredNow();
	
	/**
	 * Signals this has been attached
	 */
	void isAttachedNow();
	
	/**
	 * Signals this has been detached
	 */
	void isDetachedNow();

	void iconUpdated( TQWidget*, TQPixmap );
	void captionUpdated( TQWidget*, const TQString& );


private:
	KMdiChildViewPrivate *d;
	TQWidget *m_trackChanges;
};

inline KMdiChildFrm *KMdiChildView::mdiParent() const
{
	TQWidget * pw = parentWidget();
	if ( pw != 0L )
		if ( pw->inherits( "KMdiChildFrm" ) )
			return ( KMdiChildFrm * ) pw;
	return 0L;
}

#endif //_TDEMDI_CHILD_VIEW_H_