KoContainerHandler.cpp
1/* This file is part of the KDE project
2 Copyright (C) 1998, 1999, 2000 Torben Weis <weis@kde.org>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18*/
19
20#include "KoContainerHandler.h"
21#include <KoView.h>
22#include <math.h>
23#include <kcursor.h>
24#include <kdebug.h>
25
26KoEventHandler::KoEventHandler( TQObject* target )
27{
28 m_target = target;
29
30 m_target->installEventFilter( this );
31}
32
33KoEventHandler::~KoEventHandler()
34{
35}
36
37TQObject* KoEventHandler::target()
38{
39 return m_target;
40}
41
42// ------------------------------------------------------
43
44class KoPartResizeHandlerPrivate {
45public:
46 KoPartResizeHandlerPrivate( const TQWMatrix& matrix, KoView *view, KoChild* child,
47 KoChild::Gadget gadget, const TQPoint& point ) :
48 m_gadget(gadget), m_view(view), m_child(child), m_parentMatrix(matrix) {
49
50 m_geometryStart = child->geometry();
51 m_matrix = child->matrix() * matrix;
52 m_invertParentMatrix = matrix.invert();
53
54 bool ok = true;
55 m_invert = m_matrix.invert( &ok );
56 Q_ASSERT( ok );
57 m_mouseStart = m_invert.map( m_invertParentMatrix.map( point ) );
58 }
59 ~KoPartResizeHandlerPrivate() {}
60
61 KoChild::Gadget m_gadget;
62 TQPoint m_mouseStart;
63 TQRect m_geometryStart;
64 KoView* m_view;
65 KoChild* m_child;
66 TQWMatrix m_invert;
67 TQWMatrix m_matrix;
68 TQWMatrix m_parentMatrix;
69 TQWMatrix m_invertParentMatrix;
70};
71
72KoPartResizeHandler::KoPartResizeHandler( TQWidget* widget, const TQWMatrix& matrix, KoView* view, KoChild* child,
73 KoChild::Gadget gadget, const TQPoint& point )
74 : KoEventHandler( widget )
75{
76 child->lock();
77 d=new KoPartResizeHandlerPrivate(matrix, view, child, gadget, point);
78}
79
80KoPartResizeHandler::~KoPartResizeHandler()
81{
82 d->m_child->unlock();
83 delete d;
84 d=0L;
85}
86
87void KoPartResizeHandler::repaint(TQRegion &rgn)
88{
89 rgn = rgn.unite( d->m_child->frameRegion( d->m_parentMatrix, true ) );
90 // rgn.translate(- d->m_view->canvasXOffset(), - d->m_view->canvasYOffset());
91 ((TQWidget*)target())->repaint( rgn );
92}
93
94bool KoPartResizeHandler::eventFilter( TQObject*, TQEvent* ev )
95{
96 if ( ev->type() == TQEvent::MouseButtonRelease )
97 {
98 delete this;
99 return true;
100 }
101 else if ( ev->type() == TQEvent::MouseMove )
102 {
103 TQMouseEvent* e = (TQMouseEvent*)ev;
104 TQPoint p = d->m_invert.map( d->m_invertParentMatrix.map( e->pos() /*+ TQPoint(d->m_view->canvasXOffset(), d->m_view->canvasYOffset()) */ ) );
105 TQRegion rgn( d->m_child->frameRegion( d->m_parentMatrix, true ) );
106
107 double x1_x, x1_y, x2_x, x2_y;
108 d->m_matrix.map( double( p.x() ), 0.0, &x1_x, &x1_y );
109 d->m_matrix.map( double( d->m_mouseStart.x() ), 0.0, &x2_x, &x2_y );
110 double y1_x, y1_y, y2_x, y2_y;
111 d->m_matrix.map( 0.0, double( p.y() ), &y1_x, &y1_y );
112 d->m_matrix.map( 0.0, double( d->m_mouseStart.y() ), &y2_x, &y2_y );
113
114 double dx = x2_x - x1_x;
115 double dy = x2_y - x1_y;
116 int x = int( sqrt( dx * dx + dy * dy ) * ( d->m_mouseStart.x() < p.x() ? 1.0 : -1.0 ) );
117
118 dx = y2_x - y1_x;
119 dy = y2_y - y1_y;
120 int y = int( sqrt( dx * dx + dy * dy ) * ( d->m_mouseStart.y() < p.y() ? 1.0 : -1.0 ) );
121
122 switch( d->m_gadget )
123 {
124 case KoChild::TopLeft:
125 {
126 x = TQMIN( d->m_geometryStart.width() - 1, x );
127 y = TQMIN( d->m_geometryStart.height() - 1, y );
128
129 d->m_child->setGeometry( TQRect( d->m_geometryStart.x() + x, d->m_geometryStart.y() + y,
130 d->m_geometryStart.width() - x, d->m_geometryStart.height() - y ) );
131 repaint(rgn);
132 }
133 break;
134 case KoChild::TopMid:
135 {
136 y = TQMIN( d->m_geometryStart.height() - 1, y );
137
138 d->m_child->setGeometry( TQRect( d->m_geometryStart.x(), d->m_geometryStart.y() + y,
139 d->m_geometryStart.width(), d->m_geometryStart.height() - y ) );
140 repaint(rgn);
141 }
142 break;
143 case KoChild::TopRight:
144 {
145 x = TQMAX( -d->m_geometryStart.width() + 1, x );
146 y = TQMIN( d->m_geometryStart.height() - 1, y );
147
148 d->m_child->setGeometry( TQRect( d->m_geometryStart.x(), d->m_geometryStart.y() + y,
149 d->m_geometryStart.width() + x, d->m_geometryStart.height() - y ) );
150 repaint(rgn);
151 }
152 break;
153 case KoChild::MidLeft:
154 {
155 x = TQMIN( d->m_geometryStart.width() - 1, x );
156
157 d->m_child->setGeometry( TQRect( d->m_geometryStart.x() + x, d->m_geometryStart.y(),
158 d->m_geometryStart.width() - x, d->m_geometryStart.height() ) );
159 repaint(rgn);
160 }
161 break;
162 case KoChild::MidRight:
163 {
164 x = TQMAX( -d->m_geometryStart.width() + 1, x );
165
166 d->m_child->setGeometry( TQRect( d->m_geometryStart.x(), d->m_geometryStart.y(),
167 d->m_geometryStart.width() + x, d->m_geometryStart.height() ) );
168 repaint(rgn);
169 }
170 break;
171 case KoChild::BottomLeft:
172 {
173 x = TQMIN( d->m_geometryStart.width() - 1, x );
174 y = TQMAX( -d->m_geometryStart.height() + 1, y );
175
176 d->m_child->setGeometry( TQRect( d->m_geometryStart.x() + x, d->m_geometryStart.y(),
177 d->m_geometryStart.width() - x, d->m_geometryStart.height() + y ) );
178 repaint(rgn);
179 }
180 break;
181 case KoChild::BottomMid:
182 {
183 y = TQMAX( -d->m_geometryStart.height() + 1, y );
184
185 d->m_child->setGeometry( TQRect( d->m_geometryStart.x(), d->m_geometryStart.y(),
186 d->m_geometryStart.width(), d->m_geometryStart.height() + y ) );
187 repaint(rgn);
188 }
189 break;
190 case KoChild::BottomRight:
191 {
192 x = TQMAX( -d->m_geometryStart.width() + 1, x );
193 y = TQMAX( -d->m_geometryStart.height() + 1, y );
194
195 d->m_child->setGeometry( TQRect( d->m_geometryStart.x(), d->m_geometryStart.y(),
196 d->m_geometryStart.width() + x, d->m_geometryStart.height() + y ) );
197 repaint(rgn);
198 }
199 break;
200 default:
201 Q_ASSERT( 0 );
202 }
203 return true;
204 }
205 return false;
206}
207
208// --------------------------------------------------------------
209
210class KoPartMoveHandlerPrivate {
211public:
212 KoPartMoveHandlerPrivate( const TQWMatrix& matrix, KoView* view, KoChild* child,
213 const TQPoint& point) : m_view(view), m_dragChild(child),
214 m_parentMatrix(matrix) {
215 m_invertParentMatrix = matrix.invert();
216 m_mouseDragStart = m_invertParentMatrix.map( point );
217 m_geometryDragStart = m_dragChild->geometry();
218 m_rotationDragStart = m_dragChild->rotationPoint();
219 }
220 ~KoPartMoveHandlerPrivate() {}
221
222 KoView* m_view;
223 KoChild* m_dragChild;
224 TQPoint m_mouseDragStart;
225 TQRect m_geometryDragStart;
226 TQPoint m_rotationDragStart;
227 TQWMatrix m_invertParentMatrix;
228 TQWMatrix m_parentMatrix;
229};
230
231KoPartMoveHandler::KoPartMoveHandler( TQWidget* widget, const TQWMatrix& matrix, KoView* view, KoChild* child,
232 const TQPoint& point )
233 : KoEventHandler( widget )
234{
235 child->lock();
236 d=new KoPartMoveHandlerPrivate(matrix, view, child, point);
237}
238
239KoPartMoveHandler::~KoPartMoveHandler()
240{
241 d->m_dragChild->unlock();
242 delete d;
243 d=0L;
244}
245
246bool KoPartMoveHandler::eventFilter( TQObject*, TQEvent* ev )
247{
248 if ( ev->type() == TQEvent::MouseButtonRelease )
249 {
250 delete this;
251 return true;
252 }
253 else if ( ev->type() == TQEvent::MouseMove )
254 {
255 TQMouseEvent* e = (TQMouseEvent*)ev;
256
257 TQRegion bound = d->m_dragChild->frameRegion( d->m_parentMatrix, true );
258 TQPoint pos = d->m_invertParentMatrix.map( e->pos() /* + TQPoint(d->m_view->canvasXOffset(), d->m_view->canvasYOffset()) */ );
259 d->m_dragChild->setGeometry( TQRect( d->m_geometryDragStart.x() + pos.x() - d->m_mouseDragStart.x(),
260 d->m_geometryDragStart.y() + pos.y() - d->m_mouseDragStart.y(),
261 d->m_geometryDragStart.width(), d->m_geometryDragStart.height() ) );
262 d->m_dragChild->setRotationPoint( TQPoint( d->m_rotationDragStart.x() + pos.x() - d->m_mouseDragStart.x(),
263 d->m_rotationDragStart.y() + pos.y() - d->m_mouseDragStart.y() ) );
264 bound = bound.unite( d->m_dragChild->frameRegion( d->m_parentMatrix, false ) );
265 // bound.translate(- d->m_view->canvasXOffset(), - d->m_view->canvasYOffset());
266 ((TQWidget*)target())->repaint( bound );
267
268 return true;
269 }
270
271 return false;
272}
273
274// -------------------------------------------------------
275
276KoContainerHandler::KoContainerHandler( KoView* view, TQWidget* widget )
277 : KoEventHandler( widget )
278{
279 m_view = view;
280}
281
282KoContainerHandler::~KoContainerHandler()
283{
284}
285
286bool KoContainerHandler::eventFilter( TQObject*, TQEvent* ev )
287{
288 if ( ev->type() == TQEvent::KeyPress )
289 {
290 TQKeyEvent* keyEvent=(TQKeyEvent*)ev;
291
292 KoChild* child=m_view->selectedChild();
293
294 if (child != 0)
295 {
296 if (keyEvent->key()==TQt::Key_Delete)
297 emit deleteChild(child);
298 }
299 }
300
301 if ( ev->type() == TQEvent::MouseButtonPress )
302 {
303 KoChild::Gadget gadget;
304 TQPoint pos;
305 TQMouseEvent *e=static_cast<TQMouseEvent*>(ev);
306 KoChild *ch=child(gadget, pos, e);
307
308 if ( e->button() == TQt::RightButton && gadget != KoChild::NoGadget )
309 {
310 emit popupMenu( ch, e->globalPos() );
311 return true;
312 }
313 else if ( e->button() == TQt::LeftButton && gadget == KoChild::Move )
314 {
315 (void)new KoPartMoveHandler( static_cast<TQWidget*>(target()), m_view->matrix(), m_view, ch, pos );
316 return true;
317 }
318 else if ( e->button() == TQt::LeftButton && gadget != KoChild::NoGadget )
319 {
320 (void)new KoPartResizeHandler( static_cast<TQWidget*>(target()), m_view->matrix(), m_view, ch, gadget, pos );
321 return true;
322 }
323 return false;
324 }
325 else if ( ev->type() == TQEvent::MouseMove )
326 {
327 TQWidget *targetWidget = static_cast<TQWidget*>( target() );
328 KoChild::Gadget gadget;
329 TQPoint pos;
330 TQMouseEvent *e=static_cast<TQMouseEvent*>(ev);
331 child(gadget, pos, e);
332
333 bool retval = true;
334 if ( gadget == KoChild::NoGadget )
335 retval = false;
336
337 if ( gadget == KoChild::TopLeft || gadget == KoChild::BottomRight )
338 targetWidget->setCursor( sizeFDiagCursor );
339 else if ( gadget == KoChild::TopRight || gadget == KoChild::BottomLeft )
340 targetWidget->setCursor( sizeBDiagCursor );
341 else if ( gadget == KoChild::TopMid || gadget == KoChild::BottomMid )
342 targetWidget->setCursor( sizeVerCursor );
343 else if ( gadget == KoChild::MidLeft || gadget == KoChild::MidRight )
344 targetWidget->setCursor( sizeHorCursor );
345 else if ( gadget == KoChild::Move )
346 targetWidget->setCursor( KCursor::handCursor() );
347 else
348 {
349// targetWidget->setCursor( arrowCursor );
350 return false;
351 }
352 return retval;
353 }
354 return false;
355}
356
357KoChild *KoContainerHandler::child(KoChild::Gadget &gadget, TQPoint &pos, const TQMouseEvent *ev) {
358
359 pos = ev->pos(); //+ TQPoint(m_view->canvasXOffset(), m_view->canvasYOffset());
360
361 pos = m_view->reverseViewTransformations( pos );
362
363 KoChild *child = 0;
364 KoDocumentChild* docChild = m_view->selectedChild();
365 gadget = KoChild::NoGadget;
366 if ( docChild )
367 {
368 KoViewChild *viewChild = m_view->child( docChild->document() );
369
370 if ( viewChild )
371 child = viewChild;
372 else
373 child = docChild;
374
375 gadget = child->gadgetHitTest( pos );
376 }
377 if ( gadget == KoChild::NoGadget )
378 {
379 docChild = m_view->activeChild();
380 if ( docChild )
381 {
382 KoViewChild *viewChild = m_view->child( docChild->document() );
383
384 if ( viewChild )
385 child = viewChild;
386 else
387 child = docChild;
388
389 gadget = child->gadgetHitTest( pos );
390 }
391 }
392 return child;
393}
394
395#include "KoContainerHandler.moc"
KCursor::handCursor
static TQCursor handCursor()
KoChild
KoChild is an abstract base class that represents the geometry associated with an embedded document.
Definition KoChild.h:42
KoChild::gadgetHitTest
virtual Gadget gadgetHitTest(const TQPoint &p)
Different actions are taken depending on where a child frame is hit.
Definition KoChild.cpp:339
KoChild::lock
void lock()
Locks this child and stores the current transformation.
Definition KoChild.cpp:296
KoChild::matrix
virtual TQWMatrix matrix() const
Definition KoChild.cpp:291
KoChild::geometry
TQRect geometry() const
Definition KoChild.cpp:92
KoChild::Gadget
Gadget
The gadget generally identifies where a child has been hit (generally by the mouse pointer).
Definition KoChild.h:56
KoContainerHandler::popupMenu
void popupMenu(KoChild *, const TQPoint &global_pos)
Emitted if the user wants to open the popup menu for some child object.
KoContainerHandler::deleteChild
void deleteChild(KoChild *)
Emitted if the user pressed the delete key whilst a child was selected.
KoDocumentChild
Holds an embedded object.
Definition KoDocumentChild.h:44
KoDocumentChild::document
KoDocument * document() const
Definition KoDocumentChild.cpp:100
KoEventHandler
An abstract base class for event handlers.
Definition KoContainerHandler.h:44
KoPartMoveHandler
Used by KoContainerHandler internally to handle moving of embedded documents.
Definition KoContainerHandler.h:83
KoPartResizeHandler
Used by KoContainerHandler internally to handle resizing of embedded documents.
Definition KoContainerHandler.h:62
KoViewChild
This class represents an active embedded document.
Definition KoView.h:474
KoView
This class is used to display a KoDocument.
Definition KoView.h:58
KoView::reverseViewTransformations
virtual TQPoint reverseViewTransformations(const TQPoint &) const
Reverse the transformations that the view makes to its contents, i.e.
Definition KoView.cpp:833
KoView::child
KoViewChild * child(KoView *view)
Definition KoView.cpp:485
KoView::activeChild
virtual KoDocumentChild * activeChild()
Definition KoView.cpp:457
KoView::selectedChild
virtual KoDocumentChild * selectedChild()
Definition KoView.cpp:444
KoView::matrix
virtual TQWMatrix matrix() const TDE_DEPRECATED
Returns the matrix which is used by the view to transform the content.
Definition KoView.cpp:505