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Implements invert colours operator.

Browse Source 
liboperators/OperatorInvert.py: initial implementation.
libroar/RoarCanvasCommandsOperators.py: adds OperatorInvert.
assets/text/TODO: updated.
This commit is contained in:
Lucio Andrés Illanes Albornoz 2019-09-15 20:43:49 +02:00
parent af5363cf04
commit aed3f7157c
3 changed files with 29 additions and 3 deletions
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2
assets/text/TODO
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@ -11,7 +11,7 @@
High-priority list:
1) unit tools: arrow, {cloud,speech bubble}, curve, measure, pick, polygon, triangle, unicode
2) text tool: a) honour RTL text flow b) navigating w/ cursor keys c) pasting text
3) operators: erase, invert, rotate, scale, shift, slice, tile
3) operators: erase, rotate, scale, shift, slice, tile
4) GUI:
a) switch to GTK
b) replace logo w/ canvas panel in About dialogue

24
liboperators/OperatorInvert.py Normal file
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@ -0,0 +1,24 @@
#!/usr/bin/env python3
#
# OperatorInvert.py
# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
#
from Operator import Operator
class OperatorInvert(Operator):
name = "Invert colours"
#
# apply(self, region)
def apply(self, region):
for numRow in range(len(region)):
for numCol in range(len(region[numRow])):
region[numRow][numCol][0:2] = [(~r & (16 - 1) if r > 0 else r) for r in region[numRow][numCol][0:2]]
return region
# __init__(self, *args): initialisation method
def __init__(self, *args):
pass
# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120

6
libroar/RoarCanvasCommandsOperators.py
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@ -6,6 +6,7 @@
from OperatorFlipHorizontal import OperatorFlipHorizontal
from OperatorFlipVertical import OperatorFlipVertical
from OperatorInvert import OperatorInvert
from GuiFrame import GuiCommandListDecorator
from ToolObject import ToolObject
import copy, wx
@ -14,9 +15,10 @@ class RoarCanvasCommandsOperators():
# {{{ canvasOperator(self, f, idx)
@GuiCommandListDecorator(0, "Flip", "&Flip", None, None, None)
@GuiCommandListDecorator(1, "Flip horizontally", "Flip &horizontally", None, None, None)
@GuiCommandListDecorator(2, "Invert", "&Invert", None, None, None)
def canvasOperator(self, f, idx):
def canvasOperator_(event):
applyOperator = [OperatorFlipVertical, OperatorFlipHorizontal][idx]()
applyOperator = [OperatorFlipVertical, OperatorFlipHorizontal, OperatorInvert][idx]()
if (self.currentTool.__class__ == ToolObject) \
and (self.currentTool.toolState >= self.currentTool.TS_SELECT):
region = self.currentTool.getRegion(self.parentCanvas.canvas)
@ -56,7 +58,7 @@ class RoarCanvasCommandsOperators():
def __init__(self):
self.menus = (
("&Operators",
self.canvasOperator(self.canvasOperator, 0), self.canvasOperator(self.canvasOperator, 1),
self.canvasOperator(self.canvasOperator, 0), self.canvasOperator(self.canvasOperator, 1), self.canvasOperator(self.canvasOperator, 2),
),
)
self.toolBars = ()