eric7.EricGraphics.EricGraphicsView

Module implementing a canvas view class.

Global Attributes

None

Classes

EricGraphicsView Class implementing a graphics view.

Functions

None


EricGraphicsView

Class implementing a graphics view.

Signals

zoomValueChanged(int)
emitted to signal a change of the zoom value

Derived from

QGraphicsView

Class Attributes

ZoomLevelDefault
ZoomLevels

Class Methods

None

Methods

EricGraphicsView Constructor
__getDiagram Private method to retrieve the diagram from the scene fitting it in the minimum rectangle.
__levelForZoom Private method determining the zoom level index given a zoom factor.
_getDiagramRect Protected method to calculate the minimum rectangle fitting the diagram.
_getDiagramSize Protected method to calculate the minimum size fitting the diagram.
autoAdjustSceneSize Public method to adjust the scene size to the diagram size.
filteredItems Public method to filter a list of items.
getBackgroundColor Public method to get the configured background color.
getDrawingColors Public method to get the configured drawing colors.
getForegroundColor Public method to get the configured foreground color.
printDiagram Public method to print the diagram.
resizeScene Public method to resize the scene.
saveImage Public method to save the scene to a file.
setSceneSize Public method to set the scene size.
setZoom Public method to set the zoom value in percent.
zoom Public method to get the current zoom factor in percent.
zoomIn Public method to zoom in.
zoomOut Public method to zoom out.
zoomReset Public method to handle the reset the zoom value.

Static Methods

None

EricGraphicsView (Constructor)

EricGraphicsView(scene, parent=None)

Constructor

scene (QGraphicsScene)
reference to the scene object
parent (QWidget)
parent widget

EricGraphicsView.__getDiagram

__getDiagram(rect, imageFormat="PNG", filename=None)

Private method to retrieve the diagram from the scene fitting it in the minimum rectangle.

rect (QRectF)
minimum rectangle fitting the diagram
imageFormat (str)
format for the image file
filename (str)
name of the file for non pixmaps
Return:
paint device containing the diagram
Return Type:
QPixmap or QSvgGenerator

EricGraphicsView.__levelForZoom

__levelForZoom(zoom)

Private method determining the zoom level index given a zoom factor.

zoom (int)
zoom factor
Return:
index of zoom factor
Return Type:
int

EricGraphicsView._getDiagramRect

_getDiagramRect(border=0)

Protected method to calculate the minimum rectangle fitting the diagram.

border (int)
border width to include in the calculation
Return:
the minimum rectangle
Return Type:
QRectF

EricGraphicsView._getDiagramSize

_getDiagramSize(border=0)

Protected method to calculate the minimum size fitting the diagram.

border (int)
border width to include in the calculation
Return:
the minimum size
Return Type:
QSizeF

EricGraphicsView.autoAdjustSceneSize

autoAdjustSceneSize(limit=False)

Public method to adjust the scene size to the diagram size.

limit (bool)
flag indicating to limit the scene to the initial size

EricGraphicsView.filteredItems

filteredItems(items)

Public method to filter a list of items.

items (QGraphicsItem)
list of items as returned by the scene object
Return:
list of interesting collision items
Return Type:
QGraphicsItem

EricGraphicsView.getBackgroundColor

getBackgroundColor()

Public method to get the configured background color.

Return:
background color
Return Type:
QColor

EricGraphicsView.getDrawingColors

getDrawingColors()

Public method to get the configured drawing colors.

Return:
tuple containing the foreground and background colors
Return Type:
tuple of (QColor, QColor)

EricGraphicsView.getForegroundColor

getForegroundColor()

Public method to get the configured foreground color.

Return:
foreground color
Return Type:
QColor

EricGraphicsView.printDiagram

printDiagram(printer, diagramName="")

Public method to print the diagram.

printer (QPrinter)
reference to a ready configured printer object
diagramName (float)
name of the diagram

EricGraphicsView.resizeScene

resizeScene(amount, isWidth=True)

Public method to resize the scene.

amount (int)
size increment
isWidth (bool)
flag indicating width is to be resized

EricGraphicsView.saveImage

saveImage(filename, imageFormat="PNG")

Public method to save the scene to a file.

filename (float)
name of the file to write the image to
imageFormat (float)
format for the image file
Return:
flag indicating success
Return Type:
bool

EricGraphicsView.setSceneSize

setSceneSize(width, height)

Public method to set the scene size.

width (float)
width for the scene
height (float)
height for the scene

EricGraphicsView.setZoom

setZoom(value)

Public method to set the zoom value in percent.

value (int)
zoom value in percent

EricGraphicsView.zoom

zoom()

Public method to get the current zoom factor in percent.

Return:
current zoom factor in percent
Return Type:
int

EricGraphicsView.zoomIn

zoomIn()

Public method to zoom in.

EricGraphicsView.zoomOut

zoomOut()

Public method to zoom out.

EricGraphicsView.zoomReset

zoomReset()

Public method to handle the reset the zoom value.

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