roar/libtools/ToolErase.py

#!/usr/bin/env python3
#
# ToolErase.py
# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
#

from Tool import Tool

class ToolErase(Tool):
    name = "Erase"

    def onMouseEvent(self, atPoint, brushColours, brushPos, brushSize, canvas, keyModifiers, mapPoint, mouseDragging, mouseLeftDown, mouseRightDown):
        brushColours, brushSize, isCursor, patches, patchesCursor = list(brushColours), list(brushSize), not (mouseLeftDown or mouseRightDown), [], []
        if brushSize[0] > 1:
            brushSize[0] *= 2
        for brushRow in range(brushSize[1]):
            for brushCol in range(brushSize[0]):
                if mouseLeftDown:
                    patches += [[mapPoint[0] + brushCol, mapPoint[1] + brushRow, brushColours[1], brushColours[1], 0, " "]]
                elif mouseRightDown                                 \
                and  ((mapPoint[0] + brushCol) < canvas.size[0])    \
                and  ((mapPoint[1] + brushRow) < canvas.size[1])    \
                and  (canvas.map[mapPoint[1] + brushRow][mapPoint[0] + brushCol][1] == brushColours[1]):
                    if canvas.map[mapPoint[1] + brushRow][mapPoint[0] + brushCol][3] == " ":
                        patches += [[mapPoint[0] + brushCol, mapPoint[1] + brushRow, brushColours[0], brushColours[0], *canvas.map[mapPoint[1] + brushRow][mapPoint[0] + brushCol][2:]]]
                    else:
                        patches += [[mapPoint[0] + brushCol, mapPoint[1] + brushRow, canvas.map[mapPoint[1] + brushRow][mapPoint[0] + brushCol][0], brushColours[0], *canvas.map[mapPoint[1] + brushRow][mapPoint[0] + brushCol][2:]]]
                else:
                    patchesCursor += [[mapPoint[0] + brushCol, mapPoint[1] + brushRow, brushColours[1], brushColours[1], 0, " "]]
        return True, patches if not isCursor else None, patchesCursor

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