99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
# Copyright (C) 2014 Andrey Golovizin
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from PyQt4.QtCore import (
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signal,
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slot,
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)
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from PyQt4.QtGui import (
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QBrush,
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QColor,
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QFrame,
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QGraphicsDropShadowEffect,
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QGraphicsItem,
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QGraphicsScene,
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QGraphicsView,
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QImage,
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QPalette,
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QPen,
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QPixmap,
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)
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import numpy as np
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from scipy.ndimage import imread
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class PageScene(QGraphicsScene):
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page = None
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pageItem = None
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glyphPen = QColor(0, 0, 0, 80)
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glyphBrush = QColor(255, 255, 0, 80)
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spacePen = QColor(0, 0, 0, 80)
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spaceBrush = QColor(0, 0, 255, 20)
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linePen = QColor(255, 50, 50, 100)
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pageItemChanged = signal([QGraphicsItem])
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.highlightedGlyphs = {}
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self.setBackgroundBrush(self.palette().window())
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def setPage(self, page):
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self.highlightedGlyphs.clear()
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for item in self.items():
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self.removeItem(item)
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self.page = page
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self.pageItem = self.addPage(page)
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shadow = QGraphicsDropShadowEffect()
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shadow.setBlurRadius(20)
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shadow.setOffset(2, 2)
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self.pageItem.setGraphicsEffect(shadow)
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self.sceneRectChanged.emit(self.sceneRect())
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self.pageItemChanged.emit(self.pageItem)
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def highlightAll(self):
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for line in page:
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for glyph in line:
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if not glyph.image.isspace:
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self.addRect(glyph.x - 1, glyph.y - 1, glyph.width + 1, glyph.height + 1, self.glyphPen, self.glyphBrush)
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else:
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self.addRect(glyph.x - 1, glyph.y - 1, glyph.width + 1, glyph.height + 1, self.spacePen, self.spaceBrush)
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self.addLine(line.left, line.baseline, line.right, line.baseline, self.linePen)
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def addPage(self, page):
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qimage = page.image.toqimage()
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graphicsitem = self.addPixmap(QPixmap.fromImage(qimage))
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return graphicsitem
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def highlightGlyph(self, glyph):
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rect = self.addRect(glyph.x - 1, glyph.y - 1, glyph.width + 1, glyph.height + 1, self.glyphPen, self.glyphBrush)
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rect.ensureVisible()
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self.highlightedGlyphs[glyph] = rect
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def clearHighlight(self):
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for item in self.highlightedGlyphs.values():
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self.removeItem(item)
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self.highlightedGlyphs.clear()
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class PageView(QGraphicsView):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.setFrameShape(self.NoFrame)
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