44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
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# Relational
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# Copyright (C) 2016 Salvo "LtWorf" Tomaselli
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#
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# Relational 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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#
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# author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
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#
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# This module provides a classes to represent relations and to perform
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# relational operations on them.
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from PyQt5.QtWidgets import QPlainTextEdit
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from PyQt5.QtCore import Qt
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class Editor(QPlainTextEdit):
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def __init__(self, *args, **kwargs):
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super(Editor, self).__init__(*args, **kwargs)
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def wheelEvent(self, event):
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if event.modifiers() & Qt.ControlModifier:
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event.accept()
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self.zoom(1 if event.angleDelta().y()>0 else -1)
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else:
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super(Editor, self).wheelEvent(event)
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def zoom(self, incr):
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font = self.font()
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point_size = font.pointSize()
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point_size += incr
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font.setPointSize(point_size)
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self.setFont(font)
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