29 lines
961 B
ReStructuredText
29 lines
961 B
ReStructuredText
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Gaphas vs jHotDraw
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Gaphas || jHotDraw
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Item | Figure
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Canvas | Drawing
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Tool | Tool
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Painter | Painter
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View | DrawingView
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jHotDraw let's you enable one tool at a time. In Gaphas everything should be
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handled from within one tool chain. Tool chains can be switched, e.g. for
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specific actions such as item placement. Everything else (item, handle
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manupilation, zooming, selection) is handled without the need to select
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specific tools.
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Items (Figures in jHotDraw) keep track of their own child items. In Gaphas, the
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Canvas object maintains the hierarchical order of items. Advantage is that
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addition of items is never unnoticed. Also iterating the nodes in the tree
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structure is a bit faster.
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In jHotDraw, connections of items (figures) are maintained within the special
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connection figure. Gaphas maintains connections between items as constraints
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and uses a constraint solver (one per canvas) to ensure the constraints remain
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true.
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