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107 lines
3.6 KiB
Plaintext
107 lines
3.6 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsfeedback.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsFeedback : QObject
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{
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%Docstring
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Base class for feedback objects to be used for cancellation of something running in a worker thread.
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The class may be used as is or it may be subclassed for extended functionality
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for a particular operation (e.g. report progress or pass some data for preview).
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When cancel() is called, the internal code has two options to check for cancellation state:
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- if the worker thread uses an event loop (e.g. for network communication), the code can make a queued connection to canceled() signal and handle the cancellation in its slot.
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- if the worker thread does not use an event loop, it can poll isCanceled() method regularly to see if the operation should be canceled.
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The class is meant to be created and destroyed in the main thread.
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For map rendering, the object may be created in constructor of a QgsMapLayerRenderer
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subclass and available with QgsMapLayerRenderer.feedback() method. When a map rendering job
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gets canceled, the cancel() method is called on the feedback object of all layers.
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.. versionadded:: 3.0
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%End
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%TypeHeaderCode
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#include "qgsfeedback.h"
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%End
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public:
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QgsFeedback( QObject *parent /TransferThis/ = 0 );
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%Docstring
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Construct a feedback object
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%End
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bool isCanceled() const;
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%Docstring
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Tells whether the operation has been canceled already
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%End
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void setProgress( double progress );
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%Docstring
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Sets the current progress for the feedback object. The ``progress``
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argument is in percentage and valid values range from 0-100.
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.. seealso:: :py:func:`progress`
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.. seealso:: :py:func:`progressChanged`
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.. versionadded:: 3.0
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%End
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double progress() const;
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%Docstring
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Returns the current progress reported by the feedback object. Depending on how the
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feedback object is used progress reporting may not be supported. The returned value
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is in percentage and ranges from 0-100.
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.. seealso:: :py:func:`setProgress`
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.. seealso:: :py:func:`progressChanged`
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.. versionadded:: 3.0
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%End
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public slots:
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void cancel();
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%Docstring
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Tells the internal routines that the current operation should be canceled. This should be run by the main thread
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%End
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signals:
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void canceled();
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%Docstring
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Internal routines can connect to this signal if they use event loop
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%End
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void progressChanged( double progress );
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%Docstring
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Emitted when the feedback object reports a progress change. Depending on how the
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feedback object is used progress reporting may not be supported. The ``progress``
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argument is in percentage and ranges from 0-100.
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.. seealso:: :py:func:`setProgress`
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.. seealso:: :py:func:`progress`
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.. versionadded:: 3.0
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%End
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/core/qgsfeedback.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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