sharpetronics/QGIS
1
0
Fork 0
mirror of https://github.com/qgis/QGIS.git synced 2025-03-04 00:30:59 -05:00
Code Issues Packages Projects Releases Wiki Activity
QGIS/python/core/annotations/qgshtmlannotation.sip

29 lines
692 B
Plaintext
Raw Normal View History

Refactor annotations Splits the rendering component of annotations out from map canvas item component. A new core abstract base class QgsAnnotation handles the management of the common properties associated with an annotation, and handles rendering the annotation onto a QgsRenderContext destination. Existing annotation classes have been ported to this, and with the exception of the form annotation moved into core. Form annotations are dependant on editor widgets and must remain in GUI. A new QgsMapCanvasAnnotationItem item class implements a QgsMapCanvasItem which draws an annotation inside the canvas, and handles synchronising the position and size of the canvas item with the QgsAnnotation position/size. This allows annotations to be safely used in a multi-canvas environment, with a single QgsAnnotation being displayed in multiple canvases (even if the canvases have different extent/crs/etc). Additionally it allows annotations to be directly rendered to a map (eg in composer) without going through the gui based Qt graphics scene framework. Also removes lots of duplicate code, and adds some basic unit tests for annotations.
2017-01-26 18:02:52 +10:00
class QgsHtmlAnnotation : QgsAnnotation
{
%TypeHeaderCode
#include <qgshtmlannotation.h>
%End
public:
Move map layer association for annotations to QgsAnnotation Previously only some annotations had (incomplete) support for attaching to a particular vector layer and synchronising their visibility with the layer's visibility. This handling has all been moved up to QgsAnnotation, so that all annotation types can be attached to layers. This will allow selective annotation visibility based on the visible layers of a particular canvas, eg in multi-canvas environments. Additionally: - show the attached layer in the annotation properties dialog, and allow it to be cleared to always show the annotation - allow attaching annotations to non-vector layers - add unit tests for visibility
2017-01-29 21:26:33 +10:00
QgsHtmlAnnotation( QObject* parent /TransferThis/ = nullptr );
Refactor annotations Splits the rendering component of annotations out from map canvas item component. A new core abstract base class QgsAnnotation handles the management of the common properties associated with an annotation, and handles rendering the annotation onto a QgsRenderContext destination. Existing annotation classes have been ported to this, and with the exception of the form annotation moved into core. Form annotations are dependant on editor widgets and must remain in GUI. A new QgsMapCanvasAnnotationItem item class implements a QgsMapCanvasItem which draws an annotation inside the canvas, and handles synchronising the position and size of the canvas item with the QgsAnnotation position/size. This allows annotations to be safely used in a multi-canvas environment, with a single QgsAnnotation being displayed in multiple canvases (even if the canvases have different extent/crs/etc). Additionally it allows annotations to be directly rendered to a map (eg in composer) without going through the gui based Qt graphics scene framework. Also removes lots of duplicate code, and adds some basic unit tests for annotations.
2017-01-26 18:02:52 +10:00
~QgsHtmlAnnotation();
QSizeF minimumFrameSize() const;
void setSourceFile( const QString& htmlFile );
QString sourceFile() const;
virtual void writeXml( QDomElement& elem, QDomDocument & doc ) const;
virtual void readXml( const QDomElement& itemElem, const QDomDocument& doc );
Port annotation feature handling to QgsAnnotation Not an ideal implementation (too much logic resides in the gui QgsMapCanvasAnnotationItem class), but any approach using current api will be dependant on some hacks. Ideally we need a QgsVectorDataProvider method for finding the closest feature(s) to a point(/line/polygon) within a certain tolerance, with provider specific implementations which offload this to the data store's spatial indices. Then this handling could be bumped up to reside in QgsAnnotation.
2017-01-29 23:14:58 +10:00
virtual void setAssociatedFeature( const QgsFeature& feature );
Annotations are now handled at a project level This commit implements a new QgsAnnotationManager class, which handles storage, writing and retrieval of annotations. QgsProject has an annotationManager() attached to it. Map canvases sync their visible QgsMapCanvasAnnotationItems to the annotations contained within the project's annotation manager. This moves all management, storage and retrieval of annotations up to core and out of app/canvas.
2017-01-30 14:57:16 +10:00
static QgsHtmlAnnotation* create() /Factory/;
Refactor annotations Splits the rendering component of annotations out from map canvas item component. A new core abstract base class QgsAnnotation handles the management of the common properties associated with an annotation, and handles rendering the annotation onto a QgsRenderContext destination. Existing annotation classes have been ported to this, and with the exception of the form annotation moved into core. Form annotations are dependant on editor widgets and must remain in GUI. A new QgsMapCanvasAnnotationItem item class implements a QgsMapCanvasItem which draws an annotation inside the canvas, and handles synchronising the position and size of the canvas item with the QgsAnnotation position/size. This allows annotations to be safely used in a multi-canvas environment, with a single QgsAnnotation being displayed in multiple canvases (even if the canvases have different extent/crs/etc). Additionally it allows annotations to be directly rendered to a map (eg in composer) without going through the gui based Qt graphics scene framework. Also removes lots of duplicate code, and adds some basic unit tests for annotations.
2017-01-26 18:02:52 +10:00
protected:
void renderAnnotation( QgsRenderContext& context, QSizeF size ) const;
};
Reference in New Issue Copy Permalink