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 "KChartDatasetSelector.h"
21
22 #include "ui_KChartDatasetSelector.h"
23
24 #include "KChartMath_p.h"
25
26 using namespace KChart;
27
DatasetSelectorWidget(QWidget * parent)28 DatasetSelectorWidget::DatasetSelectorWidget( QWidget* parent )
29 : QFrame( parent )
30 , mUi( new Ui::DatasetSelector() )
31 , mSourceRowCount( 0 )
32 , mSourceColumnCount( 0 )
33 {
34 qWarning( "For DatasetSelectorWidget to become useful, it has to be connected to the proxy model it configures!" );
35
36 mUi->setupUi( this );
37 setMinimumSize( minimumSizeHint() );
38
39 connect( mUi->sbStartColumn, SIGNAL(valueChanged(int)), this, SLOT(calculateMapping()) );
40 connect( mUi->sbStartRow, SIGNAL(valueChanged(int)), this, SLOT(calculateMapping()) );
41 connect( mUi->sbColumnCount, SIGNAL(valueChanged(int)), this, SLOT(calculateMapping()) );
42 connect( mUi->sbRowCount, SIGNAL(valueChanged(int)), this, SLOT(calculateMapping()) );
43 connect( mUi->cbReverseRows, SIGNAL(stateChanged(int)), this, SLOT(calculateMapping()) );
44 connect( mUi->cbReverseColumns, SIGNAL(stateChanged(int)), this, SLOT(calculateMapping()) );
45 connect( mUi->groupBox, SIGNAL(toggled(bool)), this, SLOT(updateState(bool)) );
46 }
47
~DatasetSelectorWidget()48 DatasetSelectorWidget::~DatasetSelectorWidget()
49 {
50 delete mUi;
51 }
52
updateState(bool state)53 void DatasetSelectorWidget::updateState( bool state )
54 {
55 if ( state )
56 {
57 calculateMapping();
58 } else {
59 Q_EMIT mappingDisabled();
60 }
61 }
62
63
setSourceRowCount(const int & rowCount)64 void DatasetSelectorWidget::setSourceRowCount( const int& rowCount )
65 {
66 if ( rowCount != mSourceRowCount )
67 {
68 mSourceRowCount = rowCount;
69 resetDisplayValues();
70 }
71 }
72
setSourceColumnCount(const int & columnCount)73 void DatasetSelectorWidget::setSourceColumnCount( const int& columnCount )
74 {
75 if ( columnCount != mSourceColumnCount )
76 {
77 mSourceColumnCount = columnCount;
78 resetDisplayValues();
79 }
80 }
81
resetDisplayValues()82 void DatasetSelectorWidget::resetDisplayValues()
83 {
84 mUi->sbStartRow->setValue( 0 );
85 mUi->sbStartRow->setMinimum( 0 );
86 mUi->sbStartRow->setMaximum( qMax( mSourceRowCount - 1, 0 ) );
87 mUi->sbStartColumn->setValue( 0 );
88 mUi->sbStartColumn->setMinimum( 0 );
89 mUi->sbStartColumn->setMaximum( qMax( mSourceColumnCount - 1, 0 ) );
90 mUi->sbRowCount->setMinimum( 1 );
91 mUi->sbRowCount->setMaximum( mSourceRowCount );
92 mUi->sbRowCount->setValue( mSourceRowCount );
93 mUi->sbColumnCount->setMinimum( 1 );
94 mUi->sbColumnCount->setMaximum( mSourceColumnCount );
95 mUi->sbColumnCount->setValue( mSourceColumnCount );
96 mUi->groupBox->setChecked( false );
97 Q_EMIT mappingDisabled();
98 }
99
calculateMapping()100 void DatasetSelectorWidget::calculateMapping()
101 {
102 if ( mSourceColumnCount < 2 && mSourceRowCount < 2 )
103 {
104 mUi->groupBox->setEnabled( false );
105 Q_EMIT mappingDisabled();
106 } else {
107 mUi->groupBox->setEnabled( true );
108
109 if ( ! mUi->groupBox->isChecked() )
110 {
111 Q_EMIT mappingDisabled();
112 return;
113 }
114
115 // retrieve values:
116 int startRow = mUi->sbStartRow->value();
117 int startColumn = mUi->sbStartColumn->value();
118 int rowCount = mUi->sbRowCount->value();
119 int columnCount = mUi->sbColumnCount->value();
120 bool reverseColumns = mUi->cbReverseColumns->checkState() == Qt::Checked;
121 bool reverseRows = mUi->cbReverseRows->checkState() == Qt::Checked;
122
123 // verify values:
124 startRow = qMin( startRow, mSourceRowCount - 2 );
125 startRow = qMax( 0, startRow );
126 startColumn = qMin( startColumn, mSourceColumnCount - 2 );
127 startColumn = qMax( 0, startColumn );
128
129 rowCount = qMin( rowCount, mSourceRowCount - startRow );
130 rowCount = qMax( 1, rowCount );
131 columnCount = qMin( columnCount, mSourceColumnCount - startColumn );
132 columnCount = qMax( 1, columnCount );
133
134 DatasetDescriptionVector rowConfig( rowCount );
135 Q_ASSERT( rowConfig.size() > 0 );
136 DatasetDescriptionVector columnConfig( columnCount );
137 Q_ASSERT( columnConfig.size() > 0 );
138
139 // fill the dataset description vectors:
140 for ( int row = 0; row < rowCount; ++row )
141 {
142 if ( reverseRows )
143 {
144 rowConfig[row] = startRow + rowCount - row - 1;
145 } else {
146 rowConfig[row] = startRow + row;
147 }
148 }
149
150 for ( int column = 0; column < columnCount; ++ column )
151 {
152 if ( reverseColumns )
153 {
154 columnConfig[column] = startColumn + columnCount - column -1;
155 } else {
156 columnConfig[column] = startColumn + column;
157 }
158 }
159
160 // and tell the world:
161 Q_EMIT configureDatasetProxyModel( rowConfig, columnConfig );
162 }
163 }
164
165