1 /*
2 * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
3 *
4 * This file is part of the KD Chart library.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <https://www.gnu.org/licenses/>.
18 */
19
20 #include "KChartAbstractAreaWidget.h"
21 #include "KChartAbstractAreaWidget_p.h"
22
23 #include "KChartMath_p.h"
24
25
26 using namespace KChart;
27
28
Private()29 AbstractAreaWidget::Private::Private()
30 {
31 // this block left empty intentionally
32 }
33
~Private()34 AbstractAreaWidget::Private::~Private()
35 {
36 // this block left empty intentionally
37 }
38
39
resizeLayout(AbstractAreaWidget * widget,const QSize & size)40 void AbstractAreaWidget::Private::resizeLayout(
41 AbstractAreaWidget* widget, const QSize& size )
42 {
43 if ( size == currentLayoutSize ) return;
44
45 currentLayoutSize = size;
46
47 // Now we call adjust the size, for the inner parts of the widget.
48 int left;
49 int top;
50 int right;
51 int bottom;
52 widget->getFrameLeadings( left, top, right, bottom );
53 const QSize innerSize( size.width() - left - right,
54 size.height() - top - bottom );
55 // With this adjusted size we call the real resizeLayout method,
56 // which normally will call resizeLayout( size ) in the derived class
57 // - which in turn is the place to resize the layout of that class.
58 widget->resizeLayout( innerSize );
59 }
60
61
AbstractAreaWidget(QWidget * parent)62 AbstractAreaWidget::AbstractAreaWidget( QWidget* parent )
63 : QWidget( parent )
64 , AbstractAreaBase( new Private() )
65 {
66 init();
67 }
68
~AbstractAreaWidget()69 AbstractAreaWidget::~AbstractAreaWidget()
70 {
71 // this block left empty intentionally
72 }
73
init()74 void AbstractAreaWidget::init()
75 {
76 // this block left empty intentionally
77 }
78
needSizeHint()79 void AbstractAreaWidget::needSizeHint()
80 {
81 // this block left empty intentionally
82 }
83
84 #define d d_func()
85
resizeLayout(const QSize & size)86 void AbstractAreaWidget::resizeLayout( const QSize& size )
87 {
88 Q_UNUSED( size );
89 // this block left empty intentionally
90 }
91
paintEvent(QPaintEvent * event)92 void AbstractAreaWidget::paintEvent( QPaintEvent* event )
93 {
94 Q_UNUSED( event );
95 QPainter painter( this );
96 if ( size() != d->currentLayoutSize ) {
97 d->resizeLayout( this, size() );
98 }
99 paintAll( painter );
100 }
101
paintIntoRect(QPainter & painter,const QRect & rect)102 void AbstractAreaWidget::paintIntoRect( QPainter& painter, const QRect& rect )
103 {
104 if ( rect.isEmpty() ) return;
105
106 d->resizeLayout( this, rect.size() );
107
108 const QPoint translation( rect.topLeft() );
109 painter.translate( translation );
110 paintAll( painter );
111 painter.translate( -translation.x(), -translation.y() );
112
113 /*
114 // guide for subclassing
115
116 // set up the contents of the widget so we get a useful geometry
117 needSizeHint();
118
119 const QRect oldGeometry( layout()->geometry() );
120 const QRect newGeo( QPoint(0,0), rect.size() );
121 const bool mustChangeGeo = layout() && oldGeometry != newGeo;
122 if ( mustChangeGeo )
123 layout()->setGeometry( newGeo );
124 painter.translate( rect.left(), rect.top() );
125 paintAll( painter );
126 painter.translate( -rect.left(), -rect.top() );
127 if ( mustChangeGeo )
128 layout()->setGeometry( oldGeometry );
129 */
130 }
131
forceRebuild()132 void AbstractAreaWidget::forceRebuild()
133 {
134 //bloc left empty intentionally
135 }
136
paintAll(QPainter & painter)137 void AbstractAreaWidget::paintAll( QPainter& painter )
138 {
139 paintBackground( painter, QRect(QPoint(0, 0), size() ) );
140 paintFrame( painter, QRect(QPoint(0, 0), size() ) );
141
142 /*
143 // guide for subclassing
144
145 // we do not call setContentsMargins() now,
146 // but we call resizeLayout() whenever the size or the frame has changed
147
148 // adjust the widget's content margins,
149 // to be sure all content gets calculated
150 // to fit into the inner rectangle
151 const QRect oldGeometry( areaGeometry() );
152 const QRect inner( innerRect() );
153 //qDebug() << "areaGeometry():" << oldGeometry
154 // << " contentsRect():" << contentsRect() << " inner:" << inner;
155 if ( contentsRect() != inner ) {
156 //qDebug() << "old contentsRect():" << contentsRect() << " new innerRect:" << inner;
157 setContentsMargins(
158 inner.left(),
159 inner.top(),
160 oldGeometry.width() - inner.width() - 1,
161 oldGeometry.height() - inner.height() - 1 );
162 //forceRebuild();
163 }
164 */
165 int left;
166 int top;
167 int right;
168 int bottom;
169 getFrameLeadings( left, top, right, bottom );
170 const QPoint translation( left, top );
171 painter.translate( translation );
172 paint( &painter );
173 painter.translate( -translation.x(), -translation.y() );
174 }
175
areaGeometry() const176 QRect AbstractAreaWidget::areaGeometry() const
177 {
178 return geometry();
179 }
180
positionHasChanged()181 void AbstractAreaWidget::positionHasChanged()
182 {
183 Q_EMIT positionChanged( this );
184 }
185