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bc969295dd
1) Backend: initial optimised cell rendering Python C module implementation skeleton.
2) Backend: raise alpha blending {fore,back}ground colour coefficient to {0.8,1.0 - 0.8}, resp.
3) Backend: reimplement cell rendering using Draw{Rectangle,Text}List().
4) Canvas window: eliminate {canvas,{scroll,tool}bar} flickering during resize.
5) Canvas window: fix cursor artifacts during resizing by masking cursor.
6) Canvas window: restore cursor after executing operations that remove it.
7) Import store: correctly parse non-conforming \u0003,<bg colour> sequences.
8) GUI: correctly save list of recently used files post-update.
80 lines
3.6 KiB
Python
80 lines
3.6 KiB
Python
#!/usr/bin/env python3
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#
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# Canvas.py
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# Copyright (c) 2018, 2019 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
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#
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from CanvasExportStore import CanvasExportStore
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from CanvasImportStore import CanvasImportStore
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from CanvasJournal import CanvasJournal
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class Canvas():
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def _commitPatch(self, patch):
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self.map[patch[1]][patch[0]] = patch[2:]
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def applyPatch(self, patch, commitUndo=True):
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if (patch[0] >= self.size[0]) or (patch[1] >= self.size[1]):
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return False
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else:
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patchDeltaCell = self.map[patch[1]][patch[0]]; patchDelta = [*patch[0:2], *patchDeltaCell];
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if commitUndo:
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self.journal.updateCurrentDeltas(patch, patchDelta)
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self._commitPatch(patch)
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return True
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def resize(self, newSize, commitUndo=True):
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if newSize != self.size:
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if self.map == None:
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self.map, oldSize = [], [0, 0]
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else:
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oldSize = self.size
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deltaSize = [b - a for a, b in zip(oldSize, newSize)]
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if commitUndo:
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self.journal.begin()
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undoPatches, redoPatches = ["resize", *oldSize], ["resize", *newSize]
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self.journal.updateCurrentDeltas(redoPatches, undoPatches)
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if deltaSize[0] < 0:
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for numRow in range(oldSize[1]):
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if commitUndo:
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for numCol in range((oldSize[0] + deltaSize[0]), oldSize[0]):
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self.journal.updateCurrentDeltas(None, [numCol, numRow, *self.map[numRow][numCol]])
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del self.map[numRow][-1:(deltaSize[0]-1):-1]
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else:
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for numRow in range(oldSize[1]):
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self.map[numRow].extend([[1, 1, 0, " "]] * deltaSize[0])
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for numNewCol in range(oldSize[0], newSize[0]):
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if commitUndo:
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self.journal.updateCurrentDeltas([numNewCol, numRow, 1, 1, 0, " "], None)
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self.applyPatch([numNewCol, numRow, 1, 1, 0, " "], False)
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if deltaSize[1] < 0:
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if commitUndo:
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for numRow in range((oldSize[1] + deltaSize[1]), oldSize[1]):
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for numCol in range(oldSize[0] + deltaSize[0]):
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self.journal.updateCurrentDeltas(None, [numCol, numRow, *self.map[numRow][numCol]])
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del self.map[-1:(deltaSize[1]-1):-1]
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else:
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for numNewRow in range(oldSize[1], newSize[1]):
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self.map.extend([[[1, 1, 0, " "]] * newSize[0]])
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for numNewCol in range(newSize[0]):
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if commitUndo:
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self.journal.updateCurrentDeltas([numNewCol, numNewRow, 1, 1, 0, " "], None)
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self.applyPatch([numNewCol, numNewRow, 1, 1, 0, " "], False)
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self.size = newSize
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if commitUndo:
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self.journal.end()
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return True
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else:
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return False
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def update(self, newSize, newCanvas=None):
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for numRow in range(self.size[1]):
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for numCol in range(self.size[0]):
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if (newCanvas != None) \
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and (numRow < len(newCanvas)) and (numCol < len(newCanvas[numRow])):
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self._commitPatch([numCol, numRow, *newCanvas[numRow][numCol]])
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def __init__(self, size):
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self.exportStore, self.importStore, self.journal, self.map, self.size = CanvasExportStore(), CanvasImportStore(), CanvasJournal(), None, size
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# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120
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