QGIS API Documentation 3.27.0-Master (0a97e3138f)
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
19#include "qgsstyle.h"
20#include "qgslayout.h"
21#include "qgssymbollayerutils.h"
23#include "qgslayoutundostack.h"
24#include "qgsvectorlayer.h"
25#include "qgsfillsymbol.h"
26
28 : QgsLayoutItemBaseWidget( nullptr, polygon )
29 , mPolygon( polygon )
30{
31 setupUi( this );
32 setPanelTitle( tr( "Polygon Properties" ) );
33
34 //add widget for general composer item properties
35 mItemPropertiesWidget = new QgsLayoutItemPropertiesWidget( this, polygon );
36 //shapes don't use background or frame, since the symbol style is set through a QgsSymbolSelectorWidget
37 mItemPropertiesWidget->showBackgroundGroup( false );
38 mItemPropertiesWidget->showFrameGroup( false );
39 mainLayout->addWidget( mItemPropertiesWidget );
40
41 mPolygonStyleButton->setSymbolType( Qgis::SymbolType::Fill );
42 connect( mPolygonStyleButton, &QgsSymbolButton::changed, this, &QgsLayoutPolygonWidget::symbolChanged );
43
44 if ( mPolygon )
45 {
46 connect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
47 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
48 }
49
50 setGuiElementValues();
51
52 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
53 mPolygonStyleButton->setLayer( coverageLayer() );
54 if ( mPolygon->layout() )
55 {
56 connect( &mPolygon->layout()->reportContext(), &QgsLayoutReportContext::layerChanged, mPolygonStyleButton, &QgsSymbolButton::setLayer );
57 }
58}
59
61{
62 if ( mItemPropertiesWidget )
63 mItemPropertiesWidget->setMasterLayout( masterLayout );
64}
65
67{
69 return false;
70
71 if ( mPolygon )
72 {
73 disconnect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
74 }
75
76 mPolygon = qobject_cast< QgsLayoutItemPolygon * >( item );
77 mItemPropertiesWidget->setItem( mPolygon );
78
79 if ( mPolygon )
80 {
81 connect( mPolygon, &QgsLayoutObject::changed, this, &QgsLayoutPolygonWidget::setGuiElementValues );
82 mPolygonStyleButton->registerExpressionContextGenerator( mPolygon );
83 }
84 setGuiElementValues();
85
86 return true;
87}
88
89void QgsLayoutPolygonWidget::setGuiElementValues()
90{
91 if ( !mPolygon )
92 {
93 return;
94 }
95
96 whileBlocking( mPolygonStyleButton )->setSymbol( mPolygon->symbol()->clone() );
97}
98
99void QgsLayoutPolygonWidget::symbolChanged()
100{
101 if ( !mPolygon )
102 return;
103
104 mPolygon->layout()->undoStack()->beginCommand( mPolygon, tr( "Change Shape Style" ), QgsLayoutItem::UndoShapeStyle );
105 mPolygon->setSymbol( mPolygonStyleButton->clonedSymbol<QgsFillSymbol>() );
106 mPolygon->layout()->undoStack()->endCommand();
107}
@ Fill
Fill symbol.
A fill symbol type, for rendering Polygon and MultiPolygon geometries.
Definition: qgsfillsymbol.h:30
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:2330