QGIS API Documentation 3.41.0-Master (fda2aa46e9a)
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qgslayoutpolygonwidget.cpp
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1/***************************************************************************
2 qgslayoutpolygonwidget.cpp
3 begin : March 2016
4 copyright : (C) 2016 Paul Blottiere, Oslandia
5 email : paul dot blottiere at oslandia dot com
6 ***************************************************************************/
7
8/***************************************************************************
9 * *
10 * This program is free software; you can redistribute it and/or modify *
11 * it under the terms of the GNU General Public License as published by *
12 * the Free Software Foundation; either version 2 of the License, or *
13 * (at your option) any later version. *
14 * *
15 ***************************************************************************/
16
18#include "moc_qgslayoutpolygonwidget.cpp"
19#include "qgslayout.h"
21#include "qgslayoutundostack.h"
22#include "qgsvectorlayer.h"
23#include "qgsfillsymbol.h"
25
27 : QgsLayoutItemBaseWidget( nullptr, polygon )
28 , mPolygon( polygon )
29{
30 setupUi( this );
31 setPanelTitle( tr( "Polygon Properties" ) );
32
33 //add widget for general composer item properties
34 mItemPropertiesWidget = new QgsLayoutItemPropertiesWidget( this, polygon );
35 //shapes don't use background or frame, since the symbol style is set through a QgsSymbolSelectorWidget
36 mItemPropertiesWidget->showBackgroundGroup( false );
37 mItemPropertiesWidget->showFrameGroup( false );
38 mainLayout->addWidget( mItemPropertiesWidget );
39
40 mPolygonStyleButton->setSymbolType( Qgis::SymbolType::Fill );
41 connect( mPolygonStyleButton, &QgsSymbolButton::changed, this, &QgsLayoutPolygonWidget::symbolChanged );
42
43 if ( mPolygon )
44 {
45 connect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
46 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
47 }
48
49 setGuiElementValues();
50
51 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
52 mPolygonStyleButton->setLayer( coverageLayer() );
53 if ( mPolygon->layout() )
54 {
55 connect( &mPolygon->layout()->reportContext(), &QgsLayoutReportContext::layerChanged, mPolygonStyleButton, &QgsSymbolButton::setLayer );
56 }
57}
58
60{
61 if ( mItemPropertiesWidget )
62 mItemPropertiesWidget->setMasterLayout( masterLayout );
63}
64
66{
68 return false;
69
70 if ( mPolygon )
71 {
72 disconnect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
73 }
74
75 mPolygon = qobject_cast< QgsLayoutItemPolygon * >( item );
76 mItemPropertiesWidget->setItem( mPolygon );
77
78 if ( mPolygon )
79 {
80 connect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
81 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
82 }
83 setGuiElementValues();
84
85 return true;
86}
87
88void QgsLayoutPolygonWidget::setGuiElementValues()
89{
90 if ( !mPolygon )
91 {
92 return;
93 }
94
95 whileBlocking( mPolygonStyleButton )->setSymbol( mPolygon->symbol()->clone() );
96}
97
98void QgsLayoutPolygonWidget::symbolChanged()
99{
100 if ( !mPolygon )
101 return;
102
103 mPolygon->layout()->undoStack()->beginCommand( mPolygon, tr( "Change Shape Style" ), QgsLayoutItem::UndoShapeStyle );
104 mPolygon->setSymbol( mPolygonStyleButton->clonedSymbol<QgsFillSymbol>() );
105 mPolygon->layout()->undoStack()->endCommand();
106}
@ Fill
Fill symbol.
A fill symbol type, for rendering Polygon and MultiPolygon geometries.
A base class for property widgets for layout items.
QgsVectorLayer * coverageLayer() const
Returns the current layout context coverage layer (if set).
Layout item for node based polygon shapes.
A widget for controlling the common properties of layout items (e.g.
void setMasterLayout(QgsMasterLayoutInterface *masterLayout)
Sets the master layout associated with the item.
void showFrameGroup(bool showGroup)
Determines if the frame of the group box shall be shown.
void setItem(QgsLayoutItem *item)
Sets the layout item.
void showBackgroundGroup(bool showGroup)
Determines if the background of the group box shall be shown.
@ LayoutPolygon
Polygon shape item.
Base class for graphical items within a QgsLayout.
@ UndoShapeStyle
Shape symbol style.
int type() const override
Returns a unique graphics item type identifier.
void changed()
Emitted when the object's properties change.
bool setNewItem(QgsLayoutItem *item) override
Attempts to update the widget to show the properties for the specified item.
void setMasterLayout(QgsMasterLayoutInterface *masterLayout) override
Sets the master layout associated with the item.
QgsLayoutPolygonWidget(QgsLayoutItemPolygon *polygon)
constructor
void layerChanged(QgsVectorLayer *layer)
Emitted when the context's layer is changed.
Interface for master layout type objects, such as print layouts and reports.
void setPanelTitle(const QString &panelTitle)
Set the title of the panel when shown in the interface.
void setLayer(QgsVectorLayer *layer)
Sets a layer to associate with the widget.
void changed()
Emitted when the symbol's settings are changed.
QgsSignalBlocker< Object > whileBlocking(Object *object)
Temporarily blocks signals from a QObject while calling a single method from the object.
Definition qgis.h:5821