agroeyepy.View.viewarea.ViewArea Class Reference

Inheritance diagram for agroeyepy.View.viewarea.ViewArea:

Collaboration diagram for agroeyepy.View.viewarea.ViewArea:

Public Member Functions
def	__init__ (self, parent=None)
def	addFilesModel (self, model)
def	convertLayersToData (self, fileListVisible, fileListAll)
	Set parameters of views, run thread for all loaded files. More...
def	rescale (self, scale)
def	addLayers (self, params)
	Add loaded files to view as QGraphicsPixmapItem. More...
def	getFileName (self, path)
def	getVisibleLayers (self)
def	setupViewAreaParameters (self, file=None, fullExtent=False)
	Setup ViewArea parameters such as: projection EPSG, size of ViewScene, coordinates of center. More...
def	newSceneParameters (self, event)
	Calculates new width and height of View Scene. More...
def	clearScene (self)
	Clears the scene in order to create space for new elements after for example resizing, zooming, adding new layer or removing it. More...
def	buildUpBoundary (self)
	Builds new boundary in the currently displayed window. More...
def	setZoomWheelScrollFactor (self, valueIn)
	Changes the strength of the zoom. More...
def	wheelEvent (self, event)
	Examines what type of mouse wheel event has just occured. More...
def	contextMenuEvent (self, event)
	Creates context menu if right mouse button clicked inside the view area. More...
def	mouseMoveEvent (self, event)
	Changes the coordinates in the main window if the mouse moves over the view area or moves layers if the middle button was pressed or proper tool was selected. More...
def	mouseReleaseEvent (self, event)
	Finishes moving layers triggering shift. More...
def	getMouseCoordinates (self, qPoint)
	Converts pixel coordinates into physical coordinates in the terrain. More...
def	revertCoordinates (self, xReal, yReal)
def	mousePressEvent (self, event)
def	mouseDoubleClickEvent (self, event)
def	panActionToggled (self, isToogled)
def	resizeEvent (self, event)
def	properties (self)
def	zoomIn (self, event=None, delta=120)
def	zoomOut (self, event=None, delta=-120)
def	updateUI (self)
def	fromPixelsToCoordinates (self, qPoint)
	Re-Calculates point coordinates from pixel into Geo-Coordinates. More...
def	setUpEPSG (self, combobox, code)
def	chooseEPSG (self, newIndex, combobox, isTemp=False)
	Choose EPSG code. More...
def	epsgChanged (self, newIndex, combobox=False, setupMain=False)
	Set EPSG code to Raster. More...
def	checkComboBoxValues (self, args, kwargs)
	Simply styling line with editing EPSG code. More...
def	zoomTyped (self, textTyped, combobox)
def	changeZoom (self, lineEdit=None, expression=None)
	Does everything connected with change zoom. More...
def	setZoomComboBoxValue (self, scaleNominator)
def	setNoStyleZoomComboBox (self, index)
def	projectionFromFirst (self)
def	transformCoordinates (self, oldProj4, xCoord, yCooord)

Public Attributes
	scene
	Clears the scene in order to create space for new elements after for example resizing, zooming, adding new layer or removing it. More...
	parent
	wheelScrollZoomFactor
	Changes the strength of the zoom. More...
	panActionActive
	stretchClass
	vectorPixSize
	vectorSymbolStyle
	vectorLineStyle
	vectorFillStyle
	vectorOpacity
	vectorColorIn
	projectionFirst
	Set EPSG code to Raster. More...
	centralPaintPoint
	paintSize
	Size of the displaying widget. More...
	projectionEPSG
	EPGS of showed files. More...
	viewAreaSpatialReference
	viewAreaProj4
	mem_drv
	viewAreaAsRaster
	Builds new boundary in the currently displayed window. More...
	viewAreaGeoMatrix
	pixSize
	Does everything connected with change zoom. More...
	scaleNominator
	ratio
	Coefficient to convert file pix size into graphics scene size. More...
	ratioHeight
	ratioWidth
	movePressed
	Finishes moving layers triggering shift. More...
	startPosition
	Changes the coordinates in the main window if the mouse moves over the view area or moves layers if the middle button was pressed or proper tool was selected. More...
	offset
	Pixel coordinates indicate upper left corner whereas geographic coordinates indicates center position of center of pix. More...
	viewBoundary
	sceneHeight
	sceneWidth
	Setup ViewArea parameters such as: projection EPSG, size of ViewScene, coordinates of center. More...
	factor
	pressed
	comboIndexEpsg
	Dictionary with current used EPSG code, show in viewerApplication.coordinateSystemComboBox. More...
	EPSG2Name
	Dictionary with all EPSG (by name) More...
	EPSG2Proj4
	Dictionary with all EPSG (by Proj4) More...
	getImageList
	thread
	zoomObject
	zoomThread
	files
	Set parameters of views, run thread for all loaded files. More...
	filesAll
	getDataThread
	svgWidget
	Add loaded files to view as QGraphicsPixmapItem. More...
	transformation

Constructor & Destructor Documentation

__init__()

def agroeyepy.View.viewarea.ViewArea.__init__	(		self,
			parent = None
	)

Member Function Documentation

addFilesModel()

def agroeyepy.View.viewarea.ViewArea.addFilesModel	(		self,
			model
	)

addLayers()

def agroeyepy.View.viewarea.ViewArea.addLayers	(		self,
			params
	)

Add loaded files to view as QGraphicsPixmapItem.

Parameters

params

0 - list of raster data; 1 - list of vector data;

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buildUpBoundary()

def agroeyepy.View.viewarea.ViewArea.buildUpBoundary

(

self

)

Builds new boundary in the currently displayed window.

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changeZoom()

def agroeyepy.View.viewarea.ViewArea.changeZoom	(		self,
			lineEdit = None,
			expression = None
	)

Does everything connected with change zoom.

Parameters

lineEdit	Parameter send if rescale was caused by typing value on keyboard
expression	Parameter send if rescale was caused by selecting value from QComboBox

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checkComboBoxValues()

def agroeyepy.View.viewarea.ViewArea.checkComboBoxValues	(		self,
			args,
			kwargs
	)

Simply styling line with editing EPSG code.

When background is yellow it means that more digits are required, When background is green the number of digits is satisfactory Red background never appears because right format of characters is imposed by Regular Expression Validator

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chooseEPSG()

def agroeyepy.View.viewarea.ViewArea.chooseEPSG	(		self,
			newIndex,
			combobox,
			isTemp = False
	)

Choose EPSG code.

User can choose EPSG code from list or enter new EPSG Code. If user EPSG Code is valid, new code is add to list.

Parameters

newIndex	Index of EPSG code list
combobox	Given QComboBox widget as a instance of a QComboBox class from PyQt

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clearScene()

def agroeyepy.View.viewarea.ViewArea.clearScene

(

self

)

Clears the scene in order to create space for new elements after for example resizing, zooming, adding new layer or removing it.

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contextMenuEvent()

def agroeyepy.View.viewarea.ViewArea.contextMenuEvent	(		self,
			event
	)

Creates context menu if right mouse button clicked inside the view area.

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convertLayersToData()

def agroeyepy.View.viewarea.ViewArea.convertLayersToData	(		self,
			fileListVisible,
			fileListAll
	)

Set parameters of views, run thread for all loaded files.

Returns nothing.

Parameters

fileList

List of all loaded files

epsgChanged()

def agroeyepy.View.viewarea.ViewArea.epsgChanged	(		self,
			newIndex,
			combobox = False,
			setupMain = False
	)

Set EPSG code to Raster.

Parameters

newIndex	Index of chosen EPSG code
combobox	Given QComboBox widget as a instance of a QComboBox class from PyQt

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fromPixelsToCoordinates()

def agroeyepy.View.viewarea.ViewArea.fromPixelsToCoordinates	(		self,
			qPoint
	)

Re-Calculates point coordinates from pixel into Geo-Coordinates.

Parameters

qPoint

Given point as a instance of a QPoint class from PyQt

Returns

Returns a point with geo-coordinates, instance of ogr.Point Class

getFileName()

def agroeyepy.View.viewarea.ViewArea.getFileName	(		self,
			path
	)

getMouseCoordinates()

def agroeyepy.View.viewarea.ViewArea.getMouseCoordinates	(		self,
			qPoint
	)

Converts pixel coordinates into physical coordinates in the terrain.

Parameters

qPoint

Pair of coordinates of pixel under current position of mouse

Returns

Emits signal with terrain coordinates of mouse

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getVisibleLayers()

def agroeyepy.View.viewarea.ViewArea.getVisibleLayers

(

self

)

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mouseDoubleClickEvent()

def agroeyepy.View.viewarea.ViewArea.mouseDoubleClickEvent	(		self,
			event
	)

mouseMoveEvent()

def agroeyepy.View.viewarea.ViewArea.mouseMoveEvent	(		self,
			event
	)

Changes the coordinates in the main window if the mouse moves over the view area or moves layers if the middle button was pressed or proper tool was selected.

Parameters

event

Mouse event

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mousePressEvent()

def agroeyepy.View.viewarea.ViewArea.mousePressEvent	(		self,
			event
	)

mouseReleaseEvent()

def agroeyepy.View.viewarea.ViewArea.mouseReleaseEvent	(		self,
			event
	)

Finishes moving layers triggering shift.

Parameters

event

Mouse event

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newSceneParameters()

def agroeyepy.View.viewarea.ViewArea.newSceneParameters	(		self,
			event
	)

Calculates new width and height of View Scene.

Parameters

event

Event causes changes

panActionToggled()

def agroeyepy.View.viewarea.ViewArea.panActionToggled	(		self,
			isToogled
	)

projectionFromFirst()

def agroeyepy.View.viewarea.ViewArea.projectionFromFirst

(

self

)

properties()

def agroeyepy.View.viewarea.ViewArea.properties

(

self

)

rescale()

def agroeyepy.View.viewarea.ViewArea.rescale	(		self,
			scale
	)

resizeEvent()

def agroeyepy.View.viewarea.ViewArea.resizeEvent	(		self,
			event
	)

Parameters

event

Sets new value of view area after every resizing

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revertCoordinates()

def agroeyepy.View.viewarea.ViewArea.revertCoordinates	(		self,
			xReal,
			yReal
	)

setNoStyleZoomComboBox()

def agroeyepy.View.viewarea.ViewArea.setNoStyleZoomComboBox	(		self,
			index
	)

setUpEPSG()

def agroeyepy.View.viewarea.ViewArea.setUpEPSG	(		self,
			combobox,
			code
	)

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setupViewAreaParameters()

def agroeyepy.View.viewarea.ViewArea.setupViewAreaParameters	(		self,
			file = None,
			fullExtent = False
	)

Setup ViewArea parameters such as: projection EPSG, size of ViewScene, coordinates of center.

Parameters

file	Required parameters are set up from provided file, raster and vector are possible.

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setZoomComboBoxValue()

def agroeyepy.View.viewarea.ViewArea.setZoomComboBoxValue	(		self,
			scaleNominator
	)

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setZoomWheelScrollFactor()

def agroeyepy.View.viewarea.ViewArea.setZoomWheelScrollFactor	(		self,
			valueIn
	)

Changes the strength of the zoom.

Parameters

valueIn

Parameter for changes

transformCoordinates()

def agroeyepy.View.viewarea.ViewArea.transformCoordinates	(		self,
			oldProj4,
			xCoord,
			yCooord
	)

updateUI()

def agroeyepy.View.viewarea.ViewArea.updateUI

(

self

)

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wheelEvent()

def agroeyepy.View.viewarea.ViewArea.wheelEvent	(		self,
			event
	)

Examines what type of mouse wheel event has just occured.

Overrides the default method.

Parameters

event

Scrolling the mouse wheel triggers this event

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zoomIn()

def agroeyepy.View.viewarea.ViewArea.zoomIn	(		self,
			event = None,
			delta = 120
	)

if event is not None:
    mousePos = self.mapFromGlobal(event.globalPos())
    self.centralPaintPoint = self.fromPixelsToCoordinates(mousePos)

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zoomOut()

def agroeyepy.View.viewarea.ViewArea.zoomOut	(		self,
			event = None,
			delta = -120
	)

if event is not None:
    mousePos = self.mapFromGlobal(event.globalPos())
    self.centralPaintPoint = self.fromPixelsToCoordinates(mousePos)

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zoomTyped()

def agroeyepy.View.viewarea.ViewArea.zoomTyped	(		self,
			textTyped,
			combobox
	)

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Member Data Documentation

centralPaintPoint

agroeyepy.View.viewarea.ViewArea.centralPaintPoint

comboIndexEpsg

def agroeyepy.View.viewarea.ViewArea.comboIndexEpsg

Dictionary with current used EPSG code, show in viewerApplication.coordinateSystemComboBox.

EPSG2Name

def agroeyepy.View.viewarea.ViewArea.EPSG2Name

Dictionary with all EPSG (by name)

EPSG2Proj4

def agroeyepy.View.viewarea.ViewArea.EPSG2Proj4

Dictionary with all EPSG (by Proj4)

factor

agroeyepy.View.viewarea.ViewArea.factor

if event is not None:
    mousePos = self.mapFromGlobal(event.globalPos())
    self.centralPaintPoint = self.fromPixelsToCoordinates(mousePos)

files

agroeyepy.View.viewarea.ViewArea.files

Set parameters of views, run thread for all loaded files.

Returns nothing.

Parameters

fileList

List of all loaded files

filesAll

agroeyepy.View.viewarea.ViewArea.filesAll

getDataThread

agroeyepy.View.viewarea.ViewArea.getDataThread

getImageList

agroeyepy.View.viewarea.ViewArea.getImageList

mem_drv

agroeyepy.View.viewarea.ViewArea.mem_drv

movePressed

def agroeyepy.View.viewarea.ViewArea.movePressed

Finishes moving layers triggering shift.

flag checking whether shifting button is pressed or not

Parameters

event

Mouse event

offset

def agroeyepy.View.viewarea.ViewArea.offset

Pixel coordinates indicate upper left corner whereas geographic coordinates indicates center position of center of pix.

paintSize

def agroeyepy.View.viewarea.ViewArea.paintSize

Size of the displaying widget.

Parameters

event

Sets new value of view area after every resizing

panActionActive

agroeyepy.View.viewarea.ViewArea.panActionActive

parent

agroeyepy.View.viewarea.ViewArea.parent

pixSize

def agroeyepy.View.viewarea.ViewArea.pixSize

Does everything connected with change zoom.

Current size of the graphics pix in meters.

Parameters

lineEdit	Parameter send if rescale was caused by typing value on keyboard
expression	Parameter send if rescale was caused by selecting value from QComboBox

pressed

agroeyepy.View.viewarea.ViewArea.pressed

projectionEPSG

def agroeyepy.View.viewarea.ViewArea.projectionEPSG

EPGS of showed files.

projectionFirst

agroeyepy.View.viewarea.ViewArea.projectionFirst

Set EPSG code to Raster.

Parameters

newIndex	Index of chosen EPSG code
combobox	Given QComboBox widget as a instance of a QComboBox class from PyQt

ratio

def agroeyepy.View.viewarea.ViewArea.ratio

Coefficient to convert file pix size into graphics scene size.

ratioHeight

agroeyepy.View.viewarea.ViewArea.ratioHeight

ratioWidth

agroeyepy.View.viewarea.ViewArea.ratioWidth

scaleNominator

agroeyepy.View.viewarea.ViewArea.scaleNominator

scene

agroeyepy.View.viewarea.ViewArea.scene

Clears the scene in order to create space for new elements after for example resizing, zooming, adding new layer or removing it.

sceneHeight

agroeyepy.View.viewarea.ViewArea.sceneHeight

sceneWidth

agroeyepy.View.viewarea.ViewArea.sceneWidth

Setup ViewArea parameters such as: projection EPSG, size of ViewScene, coordinates of center.

Parameters

file	Required parameters are set up from provided file, raster and vector are possible.

startPosition

def agroeyepy.View.viewarea.ViewArea.startPosition

Changes the coordinates in the main window if the mouse moves over the view area or moves layers if the middle button was pressed or proper tool was selected.

Cooridnates of the position of the beginning of the movement.

Parameters

event

Mouse event

stretchClass

agroeyepy.View.viewarea.ViewArea.stretchClass

svgWidget

agroeyepy.View.viewarea.ViewArea.svgWidget

Add loaded files to view as QGraphicsPixmapItem.

Parameters

params

0 - list of raster data; 1 - list of vector data;

thread

agroeyepy.View.viewarea.ViewArea.thread

transformation

agroeyepy.View.viewarea.ViewArea.transformation

vectorColorIn

agroeyepy.View.viewarea.ViewArea.vectorColorIn

vectorFillStyle

agroeyepy.View.viewarea.ViewArea.vectorFillStyle

vectorLineStyle

agroeyepy.View.viewarea.ViewArea.vectorLineStyle

vectorOpacity

agroeyepy.View.viewarea.ViewArea.vectorOpacity

vectorPixSize

agroeyepy.View.viewarea.ViewArea.vectorPixSize

vectorSymbolStyle

agroeyepy.View.viewarea.ViewArea.vectorSymbolStyle

viewAreaAsRaster

agroeyepy.View.viewarea.ViewArea.viewAreaAsRaster

Builds new boundary in the currently displayed window.

viewAreaGeoMatrix

agroeyepy.View.viewarea.ViewArea.viewAreaGeoMatrix

viewAreaProj4

agroeyepy.View.viewarea.ViewArea.viewAreaProj4

viewAreaSpatialReference

agroeyepy.View.viewarea.ViewArea.viewAreaSpatialReference

viewBoundary

agroeyepy.View.viewarea.ViewArea.viewBoundary

wheelScrollZoomFactor

agroeyepy.View.viewarea.ViewArea.wheelScrollZoomFactor

Changes the strength of the zoom.

Parameters

valueIn

Parameter for changes

zoomObject

agroeyepy.View.viewarea.ViewArea.zoomObject

zoomThread

agroeyepy.View.viewarea.ViewArea.zoomThread

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The documentation for this class was generated from the following file:

• agroeyepy/View/viewarea.py