Package arcmap :: Module graphics

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Module graphics

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Code for graphical operations such as tile and shape drawing.

Classes

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RGBA

Functions

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RGBA

getBackgroundColor()
Returns: a color representation of the background color from the gtk theme

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RGBA

getForegroundColor()
Returns: the foreground color from the gtk theme

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getHighlightColor()

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gtk.FileFilter

getFileFilter()
Returns: A file filter for open dialogs allowing only image formats

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cairo.ImageSurface

loadImage(fileName)
This function is used so that images in any format supported by gdk can be loaded.

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cairo.SurfacePattern

getCheckerPattern(ts)
Returns: the new pattern

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drawGrid(context, tileSize, width, height)
Draw a grid with cells the same size as tiles on a cairo context

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drawShape(shape, context, handles=False)

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drawPolygon(context, shape, outlineColor, fillColor, handles=False)

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drawCircle(context, shape, outlineColor, fillColor, handles=False)

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drawPointHandle(context, p, lineWidth=1.0)

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drawMoveHandle(context, p)
Draws a movement handle (A four-pointed arrow)

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cairo.SurfacePattern

getDeleteCirclePattern(size)
Returns: a red circle with a line through it.

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cairo.SurfacePattern

getDeletePattern(size)
Returns: a red x

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Variables

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log = logging.getLogger("graphics")

__package__ = 'arcmap'

Function Details

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getBackgroundColor()

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Returns: RGBA: a color representation of the background color from the gtk theme

getForegroundColor()

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Returns: RGBA: the foreground color from the gtk theme

getFileFilter()

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Returns: gtk.FileFilter: A file filter for open dialogs allowing only image formats

loadImage(fileName)

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This function is used so that images in any format supported by gdk can be loaded.

Parameters:

fileName (string) - name of file to load

Returns: cairo.ImageSurface

An image surface containing the contents of the file

getCheckerPattern(ts)

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Parameters:

ts (int) - size of the checker pattern in pixels

Returns: cairo.SurfacePattern

the new pattern

drawGrid(context, tileSize, width, height)

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Draw a grid with cells the same size as tiles on a cairo context

Parameters:

context (cairo.Context) - the destination context
tileSize (int) - the size of the grid cells

drawPolygon(context, shape, outlineColor, fillColor, handles=False)

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Parameters:

context (cairo.Context) - context to draw on
shape (shapes.Shape) - the shape to draw
outlineColor (RGBA) - color for the outline
fillColor (RGBA) - color for the filled shape
handles (bool) - True if handles should be drawn on the points

drawCircle(context, shape, outlineColor, fillColor, handles=False)

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Parameters:

context (cairo.Context) - context to draw to
shape (shapes.Shape) - the shape to draw
outlineColor (RGBA) - color for the outline
fillColor (RGBA) - color for the filled shape
handles (bool) - True if the handles should be drawn, false otherwise

drawPointHandle(context, p, lineWidth=1.0)

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Parameters:

context (cairo.Context) - destination context
p (shapes.Point) - the point to draw

drawMoveHandle(context, p)

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Draws a movement handle (A four-pointed arrow)

Parameters:

context (cairo.Context) - the context to draw on
p (shapes.Point) - the point to draw the handle around

getDeleteCirclePattern(size)

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Parameters:

size (int) - Size of the circle

Returns: cairo.SurfacePattern

a red circle with a line through it.

getDeletePattern(size)

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Parameters:

size (int) - the size of the x

Returns: cairo.SurfacePattern

a red x