1#!/usr/local/bin/python3.8
2#
3# Electron Cash - lightweight Bitcoin client
4# Copyright (C) 2019 Axel Gembe <derago@gmail.com>
5#
6# Permission is hereby granted, free of charge, to any person
7# obtaining a copy of this software and associated documentation files
8# (the "Software"), to deal in the Software without restriction,
9# including without limitation the rights to use, copy, modify, merge,
10# publish, distribute, sublicense, and/or sell copies of the Software,
11# and to permit persons to whom the Software is furnished to do so,
12# subject to the following conditions:
13#
14# The above copyright notice and this permission notice shall be
15# included in all copies or substantial portions of the Software.
16#
17# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
21# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24# SOFTWARE.
25
26from PyQt5.QtWidgets import QWidget
27from PyQt5.QtGui import QPixmap, QPainter, QPaintEvent
28
29
30class QrReaderVideoWidget(QWidget):
31    """
32    Simple widget for drawing a pixmap
33    """
34
35    USE_BILINEAR_FILTER = True
36
37    def __init__(self, parent: QWidget = None):
38        super().__init__(parent)
39
40        self.pixmap = None
41
42    def paintEvent(self, _event: QPaintEvent):
43        if not self.pixmap:
44            return
45        painter = QPainter(self)
46        if self.USE_BILINEAR_FILTER:
47            painter.setRenderHint(QPainter.SmoothPixmapTransform)
48        painter.drawPixmap(self.rect(), self.pixmap, self.pixmap.rect())
49
50    def setPixmap(self, pixmap: QPixmap):
51        self.pixmap = pixmap
52        self.update()
53