An interface for a a rendering backend for a
Canvas, that can be implemented in
order to create UI representations of a puzzle.
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Methods
draw(canvas)
Draws the canvas figures in the rendering backend
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
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fill(canvas, piece, figure)
Fills a piece using the canvas image information
assigned for it
Parameters:
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initialize(canvas, id)
Creates the rendering backend, initializig all its contents.
After this call, painter is ready to receive any other messages
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
id |
string
|
|
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label(canvas, piece, figure)
Adds piece's label to the given figure in the rendering backend
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
piece |
Piece
|
|
figure |
Figure
|
the rendering backend information for this piece. This method may mutate it if necessary |
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logicalTranslate(canvas, piece, group)
Parameters:
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onDrag(canvas, piece, group, f)
Registers a drag-start callback
Parameters:
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onDragEnd(canvas, piece, group, f)
Registers a drag-end callback
Parameters:
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physicalTranslate(canvas, group, piece)
Translates th given piece
Parameters:
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registerKeyboardGestures(canvas, gestures)
Register keyboard gestures
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
gestures |
object
|
a map of key strokes and puzzle actions |
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reinitialize(canvas)
Recreates the rendering backend, clearing all its contents
After this call, painter is ready to receive any other messages
as it had been just initialized.
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
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resize(canvas, width, height)
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
width |
number
|
|
height |
number
|
|
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scale(canvas, factor)
Scales the canvas contents
Parameters:
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sketch(canvas, piece, figure, outline)
Adds a piece to the rendering backend, so that it is ready to be drawn
Parameters:
| Name |
Type |
Description |
canvas |
Canvas
|
|
piece |
Piece
|
|
figure |
Figure
|
the rendering backend information for this piece. This method may mutate it if necessary |
outline |
Outline
|
|
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