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966ca7a95b
1) Directly render characters to canvas DC w/ clipping. 2) Fix background colour toolbar icon bitmaps. 3) Line tool: correctly set brush colours whenever updated. 4) Line tool: fix artifacts bug. 5) Render tool cursor transparently at opacity 200 (out of 255.) assets/text/TODO: updated.
83 lines
3.8 KiB
Python
83 lines
3.8 KiB
Python
#!/usr/bin/env python3
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#
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# ToolLine.py
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# Copyright (c) 2018, 2019 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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name = "Line"
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TS_NONE = 0
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TS_ORIGIN = 1
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def _getLine(self, brushColours, brushSize, dispatchFn, eventDc, isCursor, originPoint, targetPoint):
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dirty = False
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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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pointsDone = []
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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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if not ([originPoint[0] + lineX * lineXX + lineY * lineYX + brushStep, originPoint[1] + lineX * lineXY + lineY * lineYY] in pointsDone):
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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 not isCursor:
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if not dirty:
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dirty = True
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dispatchFn(eventDc, False, patch)
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else:
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dispatchFn(eventDc, True, patch)
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pointsDone += [[originPoint[0] + lineX * lineXX + lineY * lineYX + brushStep, originPoint[1] + lineX * lineXY + lineY * lineYY]]
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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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return dirty
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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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def _pointSwap(self, a, b):
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return [b, a]
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#
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# onMouseEvent(self, atPoint, brushColours, brushPos, brushSize, canvas, dispatchFn, eventDc, keyModifiers, mapPoint, mouseDragging, mouseLeftDown, mouseRightDown)
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def onMouseEvent(self, atPoint, brushColours, brushPos, brushSize, canvas, dispatchFn, eventDc, keyModifiers, mapPoint, mouseDragging, mouseLeftDown, mouseRightDown):
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brushColours, dirty = brushColours.copy(), False
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if mouseLeftDown:
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brushColours[1] = brushColours[0]
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elif mouseRightDown:
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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 mouseLeftDown or mouseRightDown:
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self.toolOriginPoint, self.toolState = list(mapPoint), self.TS_ORIGIN
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dispatchFn(eventDc, True, [*mapPoint, *brushColours, 0, " "])
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elif self.toolState == self.TS_ORIGIN:
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originPoint, targetPoint = self.toolOriginPoint, list(mapPoint)
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if mouseLeftDown or mouseRightDown:
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dirty = self._getLine(brushColours, brushSize, dispatchFn, eventDc, False, originPoint, targetPoint)
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self.toolOriginPoint, self.toolState = None, self.TS_NONE
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else:
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dirty = self._getLine(brushColours, brushSize, dispatchFn, eventDc, True, originPoint, targetPoint)
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else:
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return False, dirty
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return True, dirty
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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.toolOriginPoint, self.toolState = None, self.TS_NONE
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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