wx.lib.ogl.diagram.Diagram

The Diagram encapsulates an entire diagram, with methods for drawing. A diagram has an associated ShapeCanvas.

Class Hierarchy

Inheritance diagram for class Diagram:

Methods Summary

__init__	Default class constructor.
AddShape	Add a shape to the diagram. If addAfter is not None, the shape
Clear	Clear the specified device context.
DeleteAllShapes	Remove and delete all shapes in the diagram.
DrawOutline	Draw an outline rectangle on the current device context.
FindShape	Return the shape for the given identifier.
GetCanvas	Return the shape canvas associated with this diagram.
GetCount	Return the number of shapes in the diagram.
GetGridSpacing	Return the grid spacing.
GetMouseTolerance	Return the tolerance within which a mouse move is ignored.
GetQuickEditMode	Return quick edit mode.
GetShapeList	Return the internal shape list.
GetSnapToGrid	Return snap-to-grid mode.
InsertShape	Insert a shape at the front of the shape list.
RecentreAll	Recentre all the text that should be centred.
Redraw	Redraw the shapes in the diagram on the specified device context.
RemoveAllShapes	Remove all shapes from the diagram but do not delete the shapes.
RemoveShape	Remove the shape from the diagram (non-recursively) but do not
SetCanvas	Set the canvas associated with this diagram.
SetGridSpacing	Sets grid spacing.
SetMouseTolerance	Set the tolerance within which a mouse move is ignored.
SetQuickEditMode	Set quick-edit-mode on of off.
SetSnapToGrid	Sets snap-to-grid mode.
ShowAll	Call Show for each shape in the diagram.
Snap	‘Snaps’ the coordinate to the nearest grid position, if

Class API

class Diagram(object)

The Diagram encapsulates an entire diagram, with methods for drawing. A diagram has an associated ShapeCanvas.

Methods

__init__(self)

Default class constructor.

---

AddShape(self, object, addAfter = None)

Add a shape to the diagram. If addAfter is not None, the shape will be added after addAfter.

Parameters

• object – an instance of Shape

• addAfter – an instance of Shape

---

Clear(self, dc)

Clear the specified device context.

---

DeleteAllShapes(self)

Remove and delete all shapes in the diagram.

---

DrawOutline(self, dc, x1, y1, x2, y2)

Draw an outline rectangle on the current device context.

Parameters

• dc – the wx.MemoryDC device context

• x1 – the x1 position

• y2 – the y2 position

• x1 – the x1 position

• y2 – the y2 position

---

FindShape(self, id)

Return the shape for the given identifier.

Parameters

id – the shape id to find

---

GetCanvas(self)

Return the shape canvas associated with this diagram.

---

GetCount(self)

Return the number of shapes in the diagram.

---

GetGridSpacing(self)

Return the grid spacing.

---

GetMouseTolerance(self)

Return the tolerance within which a mouse move is ignored.

---

GetQuickEditMode(self)

Return quick edit mode.

---

GetShapeList(self)

Return the internal shape list.

---

GetSnapToGrid(self)

Return snap-to-grid mode.

---

InsertShape(self, object)

Insert a shape at the front of the shape list.

Parameters

object – an instance of Shape

---

RecentreAll(self, dc)

Recentre all the text that should be centred.

Parameters

dc – the wx.MemoryDC device context

---

Redraw(self, dc)

Redraw the shapes in the diagram on the specified device context.

---

RemoveAllShapes(self)

Remove all shapes from the diagram but do not delete the shapes.

---

RemoveShape(self, object)

Remove the shape from the diagram (non-recursively) but do not delete it.

Parameters

object – an instance of Shape

---

SetCanvas(self, canvas)

Set the canvas associated with this diagram.

Parameters

canvas – an instance of Canvas

---

SetGridSpacing(self, spacing)

Sets grid spacing.

Parameters

spacing – the spacing

---

SetMouseTolerance(self, tolerance)

Set the tolerance within which a mouse move is ignored.

The default is 3 pixels.

Parameters

tolerance – the tolerance level

---

SetQuickEditMode(self, mode)

Set quick-edit-mode on of off.

In this mode, refreshes are minimized, but the diagram may need manual refreshing occasionally.

Parameters

mode – True to quick edit or False for normal edit

---

SetSnapToGrid(self, snap)

Sets snap-to-grid mode.

Parameters

snap – True to snap to grid or False not to snap

---

ShowAll(self, show)

Call Show for each shape in the diagram.

Parameters

show – True or False

---

Snap(self, x, y)

‘Snaps’ the coordinate to the nearest grid position, if snap-to-grid is on.

Parameters

• x – the x position

• y – the y position