QGIS API Documentation  3.20.0-Odense (decaadbb31)
qgslayoutimageexportoptionsdialog.cpp
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1 /***************************************************************************
2  qgslayoutimageexportoptionsdialog.cpp
3  -------------------------------------
4  begin : December 2017
5  copyright : (C) 2017 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
19 #include "qgis.h"
20 #include "qgssettings.h"
21 #include "qgsgui.h"
22 #include "qgshelp.h"
23 
24 #include <QCheckBox>
25 #include <QPushButton>
26 
28  : QDialog( parent, flags )
29 {
30  setupUi( this );
31  connect( mWidthSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsLayoutImageExportOptionsDialog::mWidthSpinBox_valueChanged );
32  connect( mHeightSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsLayoutImageExportOptionsDialog::mHeightSpinBox_valueChanged );
33  connect( mResolutionSpinBox, static_cast < void ( QSpinBox::* )( int ) > ( &QSpinBox::valueChanged ), this, &QgsLayoutImageExportOptionsDialog::mResolutionSpinBox_valueChanged );
34 
35  connect( mClipToContentGroupBox, &QGroupBox::toggled, this, &QgsLayoutImageExportOptionsDialog::clipToContentsToggled );
36  connect( buttonBox, &QDialogButtonBox::helpRequested, this, &QgsLayoutImageExportOptionsDialog::showHelp );
38 }
39 
41 {
42  mResolutionSpinBox->setValue( resolution );
43 
44  if ( mImageSize.isValid() )
45  {
46  mWidthSpinBox->blockSignals( true );
47  mHeightSpinBox->blockSignals( true );
48  if ( mClipToContentGroupBox->isChecked() )
49  {
50  mWidthSpinBox->setValue( 0 );
51  mHeightSpinBox->setValue( 0 );
52  }
53  else
54  {
55  mWidthSpinBox->setValue( mImageSize.width() * resolution / 25.4 );
56  mHeightSpinBox->setValue( mImageSize.height() * resolution / 25.4 );
57  }
58  mWidthSpinBox->blockSignals( false );
59  mHeightSpinBox->blockSignals( false );
60  }
61 }
62 
64 {
65  return mResolutionSpinBox->value();
66 }
67 
69 {
70  mImageSize = size;
71  mWidthSpinBox->blockSignals( true );
72  mHeightSpinBox->blockSignals( true );
73  mWidthSpinBox->setValue( size.width() * mResolutionSpinBox->value() / 25.4 );
74  mHeightSpinBox->setValue( size.height() * mResolutionSpinBox->value() / 25.4 );
75  mWidthSpinBox->blockSignals( false );
76  mHeightSpinBox->blockSignals( false );
77 }
78 
80 {
81  return mWidthSpinBox->value();
82 }
83 
85 {
86  return mHeightSpinBox->value();
87 }
88 
90 {
91  mClipToContentGroupBox->setChecked( crop );
92 }
93 
95 {
96  return mClipToContentGroupBox->isChecked();
97 }
98 
100 {
101  mGenerateWorldFile->setChecked( generate );
102 }
103 
105 {
106  return mGenerateWorldFile->isChecked();
107 }
108 
110 {
111  mAntialiasingCheckBox->setChecked( antialias );
112 }
113 
115 {
116  return mAntialiasingCheckBox->isChecked();
117 }
118 
119 void QgsLayoutImageExportOptionsDialog::getCropMargins( int &topMargin, int &rightMargin, int &bottomMargin, int &leftMargin ) const
120 {
121  topMargin = mTopMarginSpinBox->value();
122  rightMargin = mRightMarginSpinBox->value();
123  bottomMargin = mBottomMarginSpinBox->value();
124  leftMargin = mLeftMarginSpinBox->value();
125 }
126 
127 void QgsLayoutImageExportOptionsDialog::setCropMargins( int topMargin, int rightMargin, int bottomMargin, int leftMargin )
128 {
129  mTopMarginSpinBox->setValue( topMargin );
130  mRightMarginSpinBox->setValue( rightMargin );
131  mBottomMarginSpinBox->setValue( bottomMargin );
132  mLeftMarginSpinBox->setValue( leftMargin );
133 }
134 
135 void QgsLayoutImageExportOptionsDialog::mWidthSpinBox_valueChanged( int value )
136 {
137  mHeightSpinBox->blockSignals( true );
138  mResolutionSpinBox->blockSignals( true );
139  mHeightSpinBox->setValue( mImageSize.height() * value / mImageSize.width() );
140  mResolutionSpinBox->setValue( value * 25.4 / mImageSize.width() );
141  mHeightSpinBox->blockSignals( false );
142  mResolutionSpinBox->blockSignals( false );
143 }
144 
145 void QgsLayoutImageExportOptionsDialog::mHeightSpinBox_valueChanged( int value )
146 {
147  mWidthSpinBox->blockSignals( true );
148  mResolutionSpinBox->blockSignals( true );
149  mWidthSpinBox->setValue( mImageSize.width() * value / mImageSize.height() );
150  mResolutionSpinBox->setValue( value * 25.4 / mImageSize.height() );
151  mWidthSpinBox->blockSignals( false );
152  mResolutionSpinBox->blockSignals( false );
153 }
154 
155 void QgsLayoutImageExportOptionsDialog::mResolutionSpinBox_valueChanged( int value )
156 {
157  mWidthSpinBox->blockSignals( true );
158  mHeightSpinBox->blockSignals( true );
159  if ( mClipToContentGroupBox->isChecked() )
160  {
161  mWidthSpinBox->setValue( 0 );
162  mHeightSpinBox->setValue( 0 );
163  }
164  else
165  {
166  mWidthSpinBox->setValue( mImageSize.width() * value / 25.4 );
167  mHeightSpinBox->setValue( mImageSize.height() * value / 25.4 );
168  }
169  mWidthSpinBox->blockSignals( false );
170  mHeightSpinBox->blockSignals( false );
171 }
172 
173 void QgsLayoutImageExportOptionsDialog::clipToContentsToggled( bool state )
174 {
175  mWidthSpinBox->setEnabled( !state );
176  mHeightSpinBox->setEnabled( !state );
177 
178  if ( state )
179  {
180  whileBlocking( mWidthSpinBox )->setValue( 0 );
181  whileBlocking( mHeightSpinBox )->setValue( 0 );
182  }
183  else
184  {
185  whileBlocking( mWidthSpinBox )->setValue( mImageSize.width() * mResolutionSpinBox->value() / 25.4 );
186  whileBlocking( mHeightSpinBox )->setValue( mImageSize.height() * mResolutionSpinBox->value() / 25.4 );
187  }
188 }
189 
190 void QgsLayoutImageExportOptionsDialog::showHelp()
191 {
192  QgsHelp::openHelp( QStringLiteral( "print_composer/create_output.html" ) );
193 }
static void enableAutoGeometryRestore(QWidget *widget, const QString &key=QString())
Register the widget to allow its position to be automatically saved and restored when open and closed...
Definition: qgsgui.cpp:156
static void openHelp(const QString &key)
Opens help topic for the given help key using default system web browser.
Definition: qgshelp.cpp:36
bool antialiasing() const
Returns whether antialiasing should be used in the export.
QgsLayoutImageExportOptionsDialog(QWidget *parent=nullptr, Qt::WindowFlags flags=Qt::WindowFlags())
Constructor for QgsLayoutImageExportOptionsDialog.
void setCropToContents(bool crop)
Sets whether the crop to contents option should be checked in the dialog.
void setImageSize(QSizeF size)
Sets the target image size.
void setAntialiasing(bool antialias)
Sets whether antialiasing should be used in the export.
double resolution() const
Returns the selected resolution from the dialog.
int imageWidth() const
Returns the user-set image width in pixels.
bool cropToContents() const
Returns whether the crop to contents option is checked in the dialog.
bool generateWorldFile() const
Returns whether the generate world file option is checked in the dialog.
void setCropMargins(int topMargin, int rightMargin, int bottomMargin, int leftMargin)
Sets the current crop to contents margin values, in pixels.
void setResolution(double resolution)
Sets the initial resolution displayed in the dialog.
void getCropMargins(int &topMargin, int &rightMargin, int &bottomMargin, int &leftMargin) const
Fetches the current crop to contents margin values, in pixels.
int imageHeight() const
Returns the user-set image height in pixels.
void setGenerateWorldFile(bool generate)
Sets whether the generate world file option should be checked.
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.
Definition: qgis.h:537