roar/libcanvas/Canvas.py
Lucio Andrés Illanes Albornoz e3d23200b3 Implements {un,re}doing resizing.
libcanvas/Canvas.py:_dispatchDeltaPatches(): handle `resize' delta patches.
libcanvas/Canvas.py:_dispatchPatch(): only commit to journal given commitUndo.
libcanvas/Canvas.py:resize(): commit `resize' & {deleted,added} cell deltas to journal.
libcanvas/Canvas.py: minor cleanup.
libcanvas/Canvas{Backend,{Export,Import}Store,Journal}.py: minor cleanup.
assets/text/arab-puke.txt: added from mircart/pack2/.
assets/text/TODO: updated.
2019-09-04 15:52:54 +02:00

200 lines
10 KiB
Python

#!/usr/bin/env python3
#
# Canvas.py -- XXX
# Copyright (c) 2018 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
#
from CanvasBackend import CanvasBackend
from CanvasJournal import CanvasJournal
from CanvasExportStore import CanvasExportStore, haveToPngFile, haveUrllib
from CanvasImportStore import CanvasImportStore
from ImgurApiKey import ImgurApiKey
import wx
class Canvas(wx.Panel):
"""XXX"""
# {{{ _commitPatch(self, patch): XXX
def _commitPatch(self, patch):
self.canvasMap[patch[1]][patch[0]] = patch[2:]
# }}}
# {{{ _dispatchDeltaPatches(self, deltaPatches): XXX
def _dispatchDeltaPatches(self, deltaPatches):
eventDc = self.canvasBackend.getDeviceContext(self)
for patch in deltaPatches:
if patch[0] == "resize":
del eventDc
self.resize(patch[1:], False)
eventDc = self.canvasBackend.getDeviceContext(self)
elif self.canvasBackend.drawPatch(eventDc, patch):
self._commitPatch(patch)
self.parentFrame.onCanvasUpdate(undoLevel=self.canvasJournal.patchesUndoLevel)
# }}}
# {{{ _dispatchPatch(self, eventDc, isCursor, patch, commitUndo=True): XXX
def _dispatchPatch(self, eventDc, isCursor, patch, commitUndo=True):
if not self._canvasDirtyCursor:
self.canvasBackend.drawCursorMaskWithJournal(self.canvasJournal, eventDc)
self._canvasDirtyCursor = True
if self.canvasBackend.drawPatch(eventDc, patch):
patchDeltaCell = self.canvasMap[patch[1]][patch[0]]
patchDelta = [*patch[0:2], *patchDeltaCell]
if isCursor and commitUndo:
self.canvasJournal.pushCursor(patchDelta)
else:
if commitUndo:
if not self._canvasDirty:
self.canvasJournal.pushDeltas([], []); self._canvasDirty = True;
self.canvasJournal.updateCurrentDeltas(patchDelta, patch)
self._commitPatch(patch)
# }}}
# {{{ onPanelClose(self, event): XXX
def onPanelClose(self, event):
self.Destroy()
# }}}
# {{{ onPanelEnterWindow(self, event): XXX
def onPanelEnterWindow(self, event):
self.parentFrame.SetFocus()
# }}}
# {{{ onPanelInput(self, event): XXX
def onPanelInput(self, event):
eventDc = self.canvasBackend.getDeviceContext(self)
eventType = event.GetEventType()
self._canvasDirty = self._canvasDirtyCursor = False
tool = self.canvasInterface.canvasTool
if eventType == wx.wxEVT_CHAR:
mapPoint = self.brushPos
doSkip = tool.onKeyboardEvent( \
event, mapPoint, self.brushColours, self.brushSize, \
chr(event.GetUnicodeKey()), self._dispatchPatch, eventDc)
if doSkip:
event.Skip(); return;
else:
mapPoint = self.canvasBackend.xlateEventPoint(event, eventDc)
if mapPoint[0] >= self.canvasSize[0] \
or mapPoint[1] >= self.canvasSize[1]:
return
self.brushPos = mapPoint
tool.onMouseEvent( \
event, mapPoint, self.brushColours, self.brushSize, \
event.Dragging(), event.LeftIsDown(), event.RightIsDown(), \
self._dispatchPatch, eventDc)
if self._canvasDirty:
self.parentFrame.onCanvasUpdate(cellPos=self.brushPos, undoLevel=self.canvasJournal.patchesUndoLevel)
if eventType == wx.wxEVT_MOTION:
self.parentFrame.onCanvasUpdate(cellPos=mapPoint)
# }}}
# {{{ onPanelLeaveWindow(self, event): XXX
def onPanelLeaveWindow(self, event):
eventDc = self.canvasBackend.getDeviceContext(self)
self.canvasBackend.drawCursorMaskWithJournal(self.canvasJournal, eventDc)
# }}}
# {{{ onPanelPaint(self, event): XXX
def onPanelPaint(self, event):
self.canvasBackend.onPanelPaintEvent(self, event)
# }}}
# {{{ onStoreUpdate(self, newCanvasSize, newCanvas=None): XXX
def onStoreUpdate(self, newCanvasSize, newCanvas=None):
self.resize(newCanvasSize=newCanvasSize, commitUndo=False)
eventDc = self.canvasBackend.getDeviceContext(self)
for numRow in range(self.canvasSize[1]):
for numCol in range(self.canvasSize[0]):
if newCanvas != None \
and numRow < len(newCanvas) \
and numCol < len(newCanvas[numRow]):
self._commitPatch([numCol, numRow, *newCanvas[numRow][numCol]])
self.canvasBackend.drawPatch(eventDc, [numCol, numRow, *self.canvasMap[numRow][numCol]])
wx.SafeYield()
# }}}
# {{{ resize(self, newCanvasSize, commitUndo=True): XXX
def resize(self, newCanvasSize, commitUndo=True):
if newCanvasSize != self.canvasSize:
self._canvasDirty, self._canvasDirtyCursor = False, False
if self.canvasMap == None:
self.canvasMap, oldCanvasSize = [], [0, 0]
else:
oldCanvasSize = self.canvasSize
deltaCanvasSize = [b - a for a, b in zip(oldCanvasSize, newCanvasSize)]
newWinSize = [a * b for a, b in zip(newCanvasSize, self.canvasBackend.cellSize)]
self.SetMinSize(newWinSize); self.SetSize(wx.DefaultCoord, wx.DefaultCoord, *newWinSize);
curWindow = self
while curWindow != None:
curWindow.Layout(); curWindow = curWindow.GetParent();
self.canvasBackend.resize(newCanvasSize, self.canvasBackend.cellSize)
eventDc = self.canvasBackend.getDeviceContext(self)
self.canvasJournal.resetCursor()
if commitUndo:
undoPatches, redoPatches = ["resize", *oldCanvasSize], ["resize", *newCanvasSize]
if not self._canvasDirty:
self.canvasJournal.pushDeltas([], []); self._canvasDirty = True;
self.canvasJournal.updateCurrentDeltas(undoPatches, redoPatches)
if deltaCanvasSize[0] < 0:
for numRow in range(oldCanvasSize[1]):
if commitUndo:
for numCol in range((oldCanvasSize[0] + deltaCanvasSize[0]), oldCanvasSize[0]):
if not self._canvasDirty:
self.canvasJournal.pushDeltas([], []); self._canvasDirty = True;
self.canvasJournal.updateCurrentDeltas([numCol, numRow, *self.canvasMap[numRow][numCol]], [numCol, numRow, 1, 1, 0, " "])
del self.canvasMap[numRow][-1:(deltaCanvasSize[0]-1):-1]
else:
for numRow in range(oldCanvasSize[1]):
self.canvasMap[numRow].extend([[1, 1, 0, " "]] * deltaCanvasSize[0])
for numNewCol in range(oldCanvasSize[0], newCanvasSize[0]):
self._dispatchPatch(eventDc, False, [numNewCol, numRow, 1, 1, 0, " "], commitUndo)
if deltaCanvasSize[1] < 0:
if commitUndo:
for numRow in range((oldCanvasSize[1] + deltaCanvasSize[1]), oldCanvasSize[1]):
for numCol in range(oldCanvasSize[0] + deltaCanvasSize[0]):
if not self._canvasDirty:
self.canvasJournal.pushDeltas([], []); self._canvasDirty = True;
self.canvasJournal.updateCurrentDeltas([numCol, numRow, *self.canvasMap[numRow][numCol]], [numCol, numRow, 1, 1, 0, " "])
del self.canvasMap[-1:(deltaCanvasSize[1]-1):-1]
else:
for numNewRow in range(oldCanvasSize[1], newCanvasSize[1]):
self.canvasMap.extend([[[1, 1, 0, " "]] * newCanvasSize[0]])
for numNewCol in range(newCanvasSize[0]):
self._dispatchPatch(eventDc, False, [numNewCol, numNewRow, 1, 1, 0, " "], commitUndo)
self.canvasSize = newCanvasSize; wx.SafeYield(); self.parentFrame.onCanvasUpdate(size=newCanvasSize, undoLevel=self.canvasJournal.patchesUndoLevel)
# }}}
# {{{ __del__(self): destructor method
def __del__(self):
if self.canvasMap != None:
self.canvasMap.clear(); self.canvasMap = None;
# }}}
#
# __init__(self, parent, parentFrame, canvasInterface, defaultCanvasPos, defaultCanvasSize, defaultCellSize): initialisation method
def __init__(self, parent, parentFrame, canvasInterface, defaultCanvasPos, defaultCanvasSize, defaultCellSize):
super().__init__(parent, pos=defaultCanvasPos, size=[w * h for w, h in zip(defaultCanvasSize, defaultCellSize)])
self.brushColours, self.brushPos, self.brushSize = [4, 1], [0, 0], [1, 1]
self._canvasDirty, self._canvasDirtyCursor = False, False
self.canvasMap, self.canvasPos, self.canvasSize, = None, defaultCanvasPos, defaultCanvasSize
self.defaultCanvasPos, self.defaultCanvasSize, self.defaultCellSize = defaultCanvasPos, defaultCanvasSize, defaultCellSize
self.imgurApiKey = ImgurApiKey.imgurApiKey
self.parentFrame = parentFrame
self.parentFrame.onCanvasUpdate(brushSize=self.brushSize, colours=self.brushColours)
self.canvasBackend = CanvasBackend(defaultCanvasSize, defaultCellSize)
self.canvasJournal = CanvasJournal()
self.canvasExportStore = CanvasExportStore(parentCanvas=self)
self.canvasImportStore = CanvasImportStore(parentCanvas=self)
self.canvasInterface = canvasInterface(self, parentFrame)
# Bind event handlers
self.Bind(wx.EVT_CLOSE, self.onPanelClose)
self.Bind(wx.EVT_ENTER_WINDOW, self.onPanelEnterWindow)
self.Bind(wx.EVT_LEAVE_WINDOW, self.onPanelLeaveWindow)
self.parentFrame.Bind(wx.EVT_CHAR, self.onPanelInput)
for eventType in (wx.EVT_LEFT_DOWN, wx.EVT_MOTION, wx.EVT_RIGHT_DOWN):
self.Bind(eventType, self.onPanelInput)
self.Bind(wx.EVT_PAINT, self.onPanelPaint)
# vim:expandtab foldmethod=marker sw=4 ts=4 tw=0