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https://github.com/lalbornoz/roar.git
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1b31d34d25
lib{canvas/Canvas{,Journal},gui/GuiCanvasPanel}.py: replace dirtyJournal & pushDeltas() w/ explicit {begin,end}().
libgui/GuiCanvasPanel.py:applyTool(): updated.
libgui/GuiCanvasPanel.py:dispatchPatchSingle(): cloned from dispatchPatch().
libtools/Tool{,Circle,Fill,Line,Rect,Select{,Clone,Move},Text}.py:on{Mouse,Keyboard}Event(): return rc, dirty.
libtools/ToolSelect{Clone,Move}.py:onSelectEvent(): return rc, dirty.
76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
#!/usr/bin/env python3
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#
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# CanvasJournal.py
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# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
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#
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class CanvasJournal():
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# {{{ begin(self)
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def begin(self):
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if self.patchesUndoLevel > 0:
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del self.patchesUndo[0:self.patchesUndoLevel]; self.patchesUndoLevel = 0;
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deltaItem = [[], []]; self.patchesUndo.insert(0, deltaItem);
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# }}}
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# {{{ end(self)
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def end(self):
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if self.patchesUndo[0] == [[], []]:
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del self.patchesUndo[0]
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# }}}
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# {{{ popCursor(self)
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def popCursor(self):
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if len(self.patchesCursor):
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patchesCursor = self.patchesCursor; self.patchesCursor = [];
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return patchesCursor
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else:
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return []
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# }}}
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# {{{ popRedo(self)
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def popRedo(self):
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if self.patchesUndoLevel > 0:
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self.patchesUndoLevel -= 1; patches = self.patchesUndo[self.patchesUndoLevel];
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return patches[1]
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else:
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return []
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# }}}
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# {{{ popUndo(self)
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def popUndo(self):
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if self.patchesUndo[self.patchesUndoLevel] != None:
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patches = self.patchesUndo[self.patchesUndoLevel]; self.patchesUndoLevel += 1;
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return patches[0]
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else:
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return []
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# }}}
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# {{{ pushCursor(self, patches)
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def pushCursor(self, patches):
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self.patchesCursor.append(patches)
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# }}}
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# {{{ resetCursor(self)
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def resetCursor(self):
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if self.patchesCursor != None:
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self.patchesCursor.clear()
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self.patchesCursor = []
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# }}}
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# {{{ resetUndo(self)
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def resetUndo(self):
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if self.patchesUndo != None:
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self.patchesUndo.clear()
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self.patchesUndo = [None]; self.patchesUndoLevel = 0;
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# }}}
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# {{{ updateCurrentDeltas(self, redoPatches, undoPatches)
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def updateCurrentDeltas(self, redoPatches, undoPatches):
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self.patchesUndo[0][0].append(undoPatches); self.patchesUndo[0][1].append(redoPatches);
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# }}}
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# {{{ __del__(self): destructor method
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def __del__(self):
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self.resetCursor(); self.resetUndo();
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# }}}
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#
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# __init__(self): initialisation method
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def __init__(self):
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self.patchesCursor, self.patchesUndo, self. patchesUndoLevel = None, None, None
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self.resetCursor(); self.resetUndo();
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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