A QgsTask shell which proxies progress reports. More...
#include <qgsproxyprogresstask.h>
Public Member Functions | |
| QgsProxyProgressTask (const QString &description) | |
| Constructor for QgsProxyProgressTask, with the specified description. More... | |
| void | finalize (bool result) |
| Finalizes the task, with the specified result. More... | |
| bool | run () override |
| Performs the task's operation. More... | |
| void | setProxyProgress (double progress) |
| Sets the progress (from 0 to 100) for the proxied operation. More... | |
 Public Member Functions inherited from QgsTask | |
| QgsTask (const QString &description=QString(), QgsTask::Flags flags=AllFlags) | |
| Constructor for QgsTask. More... | |
| ~QgsTask () override | |
| void | addSubTask (QgsTask *subTask, const QgsTaskList &dependencies=QgsTaskList(), SubTaskDependency subTaskDependency=SubTaskIndependent) |
| Adds a subtask to this task. More... | |
| bool | canCancel () const |
Returns true if the task can be canceled. More... | |
| virtual void | cancel () |
| Notifies the task that it should terminate. More... | |
| QList< QgsMapLayer * > | dependentLayers () const |
| Returns the list of layers on which the task depends. More... | |
| QString | description () const |
| Returns the task's description. More... | |
| qint64 | elapsedTime () const |
| Returns the elapsed time since the task commenced, in milliseconds. More... | |
| Flags | flags () const |
| Returns the flags associated with the task. More... | |
| void | hold () |
| Places the task on hold. More... | |
| bool | isActive () const |
Returns true if the task is active, ie it is not complete and has not been canceled. More... | |
| double | progress () const |
| Returns the task's progress (between 0.0 and 100.0) More... | |
| void | setDependentLayers (const QList< QgsMapLayer * > &dependentLayers) |
| Sets a list of layers on which the task depends. More... | |
| void | setDescription (const QString &description) |
| Sets the task's description. More... | |
| TaskStatus | status () const |
| Returns the current task status. More... | |
| void | unhold () |
| Releases the task from being held. More... | |
| bool | waitForFinished (int timeout=30000) |
| Blocks the current thread until the task finishes or a maximum of timeout milliseconds. More... | |
Additional Inherited Members | |
| Public Types inherited from QgsTask | |
| enum | Flag { CanCancel = 1 << 1 , CancelWithoutPrompt = 1 << 2 , AllFlags = CanCancel } |
| Task flags. More... | |
| enum | SubTaskDependency { SubTaskIndependent = 0 , ParentDependsOnSubTask } |
| Controls how subtasks relate to their parent task. More... | |
| enum | TaskStatus { Queued , OnHold , Running , Complete , Terminated } |
| Status of tasks. More... | |
| Signals inherited from QgsTask | |
| void | begun () |
| Will be emitted by task to indicate its commencement. More... | |
| void | progressChanged (double progress) |
| Will be emitted by task when its progress changes. More... | |
| void | statusChanged (int status) |
| Will be emitted by task when its status changes. More... | |
| void | taskCompleted () |
| Will be emitted by task to indicate its successful completion. More... | |
| void | taskTerminated () |
| Will be emitted by task if it has terminated for any reason other then completion (e.g., when a task has been canceled or encountered an internal error). More... | |
| Protected Slots inherited from QgsTask | |
| void | setProgress (double progress) |
| Sets the task's current progress. More... | |
| Protected Member Functions inherited from QgsTask | |
| virtual void | finished (bool result) |
| If the task is managed by a QgsTaskManager, this will be called after the task has finished (whether through successful completion or via early termination). More... | |
| bool | isCanceled () const |
Will return true if task should terminate ASAP. More... | |
Detailed Description
A QgsTask shell which proxies progress reports.
Simple task shell which runs until finalized and reports progress only. This is usually used to expose a blocking operation's progress via task manager.
- Since
- QGIS 3.4
Definition at line 37 of file qgsproxyprogresstask.h.
Constructor & Destructor Documentation
◆ QgsProxyProgressTask()
| QgsProxyProgressTask::QgsProxyProgressTask | ( | const QString & | description | ) |
Constructor for QgsProxyProgressTask, with the specified description.
Definition at line 21 of file qgsproxyprogresstask.cpp.
Member Function Documentation
◆ finalize()
| void QgsProxyProgressTask::finalize | ( | bool | result | ) |
Finalizes the task, with the specified result.
This should be called when the operation being proxied has completed, to remove this proxy task from the task manager.
Definition at line 26 of file qgsproxyprogresstask.cpp.
◆ run()
|
overridevirtual |
Performs the task's operation.
This method will be called when the task commences (ie via calling start() ), and subclasses should implement the operation they wish to perform in the background within this method.
A task must return a boolean value to indicate whether the task was completed successfully or terminated before completion.
Implements QgsTask.
Definition at line 35 of file qgsproxyprogresstask.cpp.
◆ setProxyProgress()
| void QgsProxyProgressTask::setProxyProgress | ( | double | progress | ) |
Sets the progress (from 0 to 100) for the proxied operation.
This method is safe to call from the main thread.
Definition at line 47 of file qgsproxyprogresstask.cpp.
The documentation for this class was generated from the following files:
- /build/qgis-3.20.0+99unstable/src/core/qgsproxyprogresstask.h
- /build/qgis-3.20.0+99unstable/src/core/qgsproxyprogresstask.cpp
