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88 lines
3.6 KiB
Python
88 lines
3.6 KiB
Python
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#!/usr/bin/env python3
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#
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# MiRCARTToolLine.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 MiRCARTTool import MiRCARTTool
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class MiRCARTToolLine(MiRCARTTool):
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"""XXX"""
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name = "Line"
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toolColours = toolOriginPoint = toolState = None
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TS_NONE = 0
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TS_ORIGIN = 1
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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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# {{{ _getLine(self, brushColours, brushSize, eventDc, isCursor, originPoint, targetPoint, dispatchFn): XXX
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def _getLine(self, brushColours, brushSize, eventDc, isCursor, originPoint, targetPoint, dispatchFn):
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originPoint = originPoint.copy(); targetPoint = targetPoint.copy();
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pointDelta = self._pointDelta(originPoint, targetPoint)
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lineXSign = 1 if pointDelta[0] > 0 else -1;
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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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pointDelta = [pointDelta[1], pointDelta[0]]
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lineXX, lineXY, lineYX, lineYY = 0, lineYSign, lineXSign, 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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#
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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 = brushColours
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self.toolOriginPoint = list(atPoint)
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self.toolState = 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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targetPoint = list(atPoint)
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originPoint = self.toolOriginPoint
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self._getLine(self.toolColours, brushSize, \
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eventDc, isLeftDown or isRightDown, \
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originPoint, targetPoint, dispatchFn)
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if isLeftDown or isRightDown:
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self.toolColours = None
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self.toolOriginPoint = None
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self.toolState = 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 = None
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self.toolOriginPoint = None
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self.toolState = self.TS_NONE
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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