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97 lines
3.3 KiB
97 lines
3.3 KiB
# MIT License |
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# |
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# Copyright (c) 2024 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com> |
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# |
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# Permission is hereby granted, free of charge, to any person obtaining a copy |
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# of this software and associated documentation files (the "Software"), to deal |
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# in the Software without restriction, including without limitation the rights |
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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# copies of the Software, and to permit persons to whom the Software is |
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# furnished to do so, subject to the following conditions: |
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# |
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# The above copyright notice and this permission notice shall be included in all |
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# copies or substantial portions of the Software. |
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# |
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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# SOFTWARE. |
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__all__ = ['glbls'] |
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from dataclasses import dataclass |
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import TermTk as ttk |
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from .state.brush import Brush |
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from .state.layers import Layers |
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# from .canvaslayer import CanvasLayer |
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class Snapshot(): |
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__slots__ = ('_layer','_canvasLayers') |
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def __init__(self) -> None: |
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self._layer = glbls.layers.clone() |
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self._canvasLayers = [cl.saveSnapshot() for cl in glbls.layers.layers()] |
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def restore(self) -> None: |
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if self._layer: |
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glbls.layers.restore(self._layer) |
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for cl,snapId in zip(glbls.layers.layers(),self._canvasLayers): |
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cl.restoreSnapshot(snapId) |
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def __eq__(self, value: object) -> bool: |
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return ( |
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self._layer == value._layer and |
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self._canvasLayers == value._canvasLayers ) |
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class Glbls: |
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def __init__(self) -> None: |
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self.brush:Brush = Brush() |
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self.layers:Layers = Layers() |
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self.documentSize = (80,25) |
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self.fileNameChanged = ttk.pyTTkSignal(str) |
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self._filename = "untitled.DPT.json" |
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self._snaphots = [] |
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self._snapId:int = 0 |
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def setFilename(self, fileName): |
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self._filename = fileName |
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self.fileNameChanged.emit(fileName) |
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def fileName(self): |
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return self._filename |
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def clearSnapshot(self): |
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self._snaphots = [] |
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self._snapId:int = 0 |
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def saveSnapshot(self): |
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# TODO: Dispose properly of the unused clones |
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snapshot = Snapshot() |
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# if not snapshot.valid(): |
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# return |
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if 0 <= self._snapId < len(self._snaphots): |
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if self._snaphots[self._snapId] == snapshot: |
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return |
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self._snaphots = self._snaphots[:self._snapId+1] + [snapshot] |
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self._snapId = len(self._snaphots)-1 |
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@ttk.pyTTkSlot() |
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def undo(self): |
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# ttk.TTkLog.debug(f"{self._snapId=} - {len(self._snaphots)=}") |
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if self._snapId: |
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self._snapId -= 1 |
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self._snaphots[self._snapId].restore() |
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@ttk.pyTTkSlot() |
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def redo(self): |
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if 0 <= self._snapId < len(self._snaphots)-1: |
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self._snapId += 1 |
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self._snaphots[self._snapId].restore() |
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glbls = Glbls()
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