eric6.E5Graphics.E5GraphicsView
Module implementing a canvas view class.
Global Attributes
Classes
Functions
E5GraphicsView
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
Methods
| E5GraphicsView |
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
E5GraphicsView (Constructor)
E5GraphicsView(scene, parent=None)
Constructor
- scene
-
reference to the scene object (QGraphicsScene)
- parent
-
parent widget (QWidget)
E5GraphicsView.__getDiagram
__getDiagram(rect, imageFormat="PNG", filename=None)
Private method to retrieve the diagram from the scene fitting it
in the minimum rectangle.
- rect
-
minimum rectangle fitting the diagram (QRectF)
- imageFormat
-
format for the image file (string)
- filename
-
name of the file for non pixmaps (string)
- Returns:
-
diagram pixmap to receive the diagram (QPixmap)
E5GraphicsView.__levelForZoom
__levelForZoom(zoom)
Private method determining the zoom level index given a zoom factor.
- zoom
-
zoom factor (integer)
- Returns:
-
index of zoom factor (integer)
E5GraphicsView._getDiagramRect
_getDiagramRect(border=0)
Protected method to calculate the minimum rectangle fitting the
diagram.
- border
-
border width to include in the calculation (integer)
- Returns:
-
the minimum rectangle (QRectF)
E5GraphicsView._getDiagramSize
_getDiagramSize(border=0)
Protected method to calculate the minimum size fitting the diagram.
- border
-
border width to include in the calculation (integer)
- Returns:
-
the minimum size (QSizeF)
E5GraphicsView.autoAdjustSceneSize
autoAdjustSceneSize(limit=False)
Public method to adjust the scene size to the diagram size.
- limit
-
flag indicating to limit the scene to the
initial size (boolean)
E5GraphicsView.filteredItems
filteredItems(items)
Public method to filter a list of items.
- items
-
list of items as returned by the scene object
(QGraphicsItem)
- Returns:
-
list of interesting collision items (QGraphicsItem)
E5GraphicsView.getBackgroundColor
getBackgroundColor()
Public method to get the configured background color.
- Returns:
-
background color
- Return Type:
-
QColor
E5GraphicsView.getDrawingColors
getDrawingColors()
Public method to get the configured drawing colors.
- Returns:
-
tuple containing the foreground and background colors
- Return Type:
-
tuple of (QColor, QColor)
E5GraphicsView.getForegroundColor
getForegroundColor()
Public method to get the configured foreground color.
- Returns:
-
foreground color
- Return Type:
-
QColor
E5GraphicsView.printDiagram
printDiagram(printer, diagramName="")
Public method to print the diagram.
- printer
-
reference to a ready configured printer object
(QPrinter)
- diagramName
-
name of the diagram (string)
E5GraphicsView.resizeScene
resizeScene(amount, isWidth=True)
Public method to resize the scene.
- amount
-
size increment (integer)
- isWidth
-
flag indicating width is to be resized (boolean)
E5GraphicsView.saveImage
saveImage(filename, imageFormat="PNG")
Public method to save the scene to a file.
- filename
-
name of the file to write the image to (string)
- imageFormat
-
format for the image file (string)
- Returns:
-
flag indicating success (boolean)
E5GraphicsView.setSceneSize
setSceneSize(width, height)
Public method to set the scene size.
- width
-
width for the scene (real)
- height
-
height for the scene (real)
E5GraphicsView.setZoom
setZoom(value)
Public method to set the zoom value in percent.
- value
-
zoom value in percent (integer)
E5GraphicsView.zoom
zoom()
Public method to get the current zoom factor in percent.
- Returns:
-
current zoom factor in percent (integer)
E5GraphicsView.zoomIn
zoomIn()
Public method to zoom in.
E5GraphicsView.zoomOut
zoomOut()
Public method to zoom out.
E5GraphicsView.zoomReset
zoomReset()
Public method to handle the reset the zoom value.