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76 lines
3.4 KiB
Python
76 lines
3.4 KiB
Python
#!/usr/bin/env python3
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#
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# ToolLine.py -- XXX
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# Copyright (c) 2018 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
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#
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from Tool import Tool
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class ToolLine(Tool):
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"""XXX"""
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name = "Line"
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TS_NONE = 0
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TS_ORIGIN = 1
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# {{{ _getLine(self, brushColours, brushSize, dispatchFn, eventDc, isCursor, originPoint, targetPoint): XXX
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def _getLine(self, brushColours, brushSize, dispatchFn, eventDc, isCursor, originPoint, targetPoint):
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originPoint, targetPoint = originPoint.copy(), targetPoint.copy()
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pointDelta = self._pointDelta(originPoint, targetPoint)
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lineXSign = 1 if pointDelta[0] > 0 else -1; lineYSign = 1 if pointDelta[1] > 0 else -1;
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pointDelta = [abs(a) for a in pointDelta]
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if pointDelta[0] > pointDelta[1]:
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lineXX, lineXY, lineYX, lineYY = lineXSign, 0, 0, lineYSign
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else:
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lineXX, lineXY, lineYX, lineYY = 0, lineYSign, lineXSign, 0
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pointDelta = [pointDelta[1], pointDelta[0]]
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lineD = 2 * pointDelta[1] - pointDelta[0]; lineY = 0;
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for lineX in range(pointDelta[0] + 1):
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for brushStep in range(brushSize[0]):
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patch = [ \
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originPoint[0] + lineX * lineXX + lineY * lineYX + brushStep, \
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originPoint[1] + lineX * lineXY + lineY * lineYY, \
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*brushColours, 0, " "]
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if isCursor:
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dispatchFn(eventDc, False, patch); dispatchFn(eventDc, True, patch);
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else:
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dispatchFn(eventDc, True, patch)
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if lineD > 0:
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lineD -= pointDelta[0]; lineY += 1;
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lineD += pointDelta[1]
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# }}}
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# {{{ _pointDelta(self, a, b): XXX
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def _pointDelta(self, a, b):
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return [a2 - a1 for a1, a2 in zip(a, b)]
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# }}}
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# {{{ _pointSwap(self, a, b): XXX
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def _pointSwap(self, a, b):
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return [b, a]
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# }}}
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#
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# onMouseEvent(self, event, atPoint, brushColours, brushSize, isDragging, isLeftDown, isRightDown, dispatchFn, eventDc): XXX
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def onMouseEvent(self, event, atPoint, brushColours, brushSize, isDragging, isLeftDown, isRightDown, dispatchFn, eventDc):
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brushColours = brushColours.copy()
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if isLeftDown:
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brushColours[1] = brushColours[0]
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elif isRightDown:
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brushColours[0] = brushColours[1]
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else:
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brushColours[1] = brushColours[0]
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if self.toolState == self.TS_NONE:
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if isLeftDown or isRightDown:
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self.toolColours, self.toolOriginPoint, self.toolState = brushColours, list(atPoint), self.TS_ORIGIN
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dispatchFn(eventDc, True, [*atPoint, *brushColours, 0, " "])
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elif self.toolState == self.TS_ORIGIN:
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originPoint, targetPoint = self.toolOriginPoint, list(atPoint)
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self._getLine(self.toolColours, brushSize, dispatchFn, eventDc, isLeftDown or isRightDown, originPoint, targetPoint)
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if isLeftDown or isRightDown:
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self.toolColours, self.toolOriginPoint, self.toolState = None, None, self.TS_NONE
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# __init__(self, *args): initialisation method
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def __init__(self, *args):
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super().__init__(*args)
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self.toolColours, self.toolOriginPoint, self.toolState = None, None, self.TS_NONE
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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