def paint_with_opacity(pixmap: QPixmap, opacity: float):
transparent_image = QImage(QSize(36, 36),
QImage.Format_ARGB32_Premultiplied)
transparent_image.fill(Qt.transparent)
painter = QPainter(transparent_image)
painter.setOpacity(opacity)
painter.drawPixmap(18 - pixmap.width() / 2, 18 - pixmap.height() / 2,
pixmap)
painter.end()
return QPixmap.fromImage(transparent_image)
class EntropyWidget(QWidget):
def __init__(self, parent, view, data):
super(EntropyWidget, self).__init__(parent)
self.view = view
self.data = data
self.raw_data = data.file.raw
self.block_size = (len(self.raw_data) / 4096) + 1
if self.block_size < 1024:
self.block_size = 1024
self.width = int(len(self.raw_data) / self.block_size)
self.image = QImage(self.width, 1, QImage.Format_ARGB32)
self.image.fill(QColor(0, 0, 0, 0))
self.thread = EntropyThread(self.raw_data, self.image, self.block_size)
self.started = False
self.timer = QTimer()
self.timer.timeout.connect(self.timerEvent)
self.timer.setInterval(100)
self.timer.setSingleShot(False)
self.timer.start()
self.setMinimumHeight(UIContext.getScaledWindowSize(32, 32).height())
def paintEvent(self, event):
p = QPainter(self)
p.drawImage(self.rect(), self.image)
p.drawRect(self.rect())
def sizeHint(self):
return QSize(640, 32)
def timerEvent(self):
if not self.started:
self.thread.start()
self.started = True
if self.thread.updated:
self.thread.updated = False
self.update()
def mousePressEvent(self, event):
if event.button() != Qt.LeftButton:
return
frac = float(event.x()) / self.rect().width()
offset = int(frac * self.width * self.block_size)
self.view.navigateToFileOffset(offset)
def __init__(self):
# Sidebar icons are 28x28 points. Should be at least 56x56 pixels for
# HiDPI display compatibility. They will be automatically made theme
# aware, so you need only provide a grayscale image, where white is
# the color of the shape.
icon = QImage(56, 56, QImage.Format_RGB32)
icon.fill(0)
# Render an "H" as the example icon
p = QPainter()
p.begin(icon)
p.setFont(QFont("Open Sans", 56))
p.setPen(QColor(255, 255, 255, 255))
p.drawText(QRectF(0, 0, 56, 56), Qt.AlignCenter, "H")
p.end()
SidebarWidgetType.__init__(self, icon, "Hello")
class Image(qrcode.image.base.BaseImage):
def __init__(self, border, width, box_size):
self.border = border
self.width = width
self.box_size = box_size
size = (width + border * 2) * box_size
self._image = QImage(size, size, QImage.Format_RGB16)
self._image.fill(Qt.white)
def pixmap(self):
return QPixmap.fromImage(self._image)
def drawrect(self, row, col):
painter = QPainter(self._image)
painter.fillRect((col + self.border) * self.box_size,
(row + self.border) * self.box_size, self.box_size,
self.box_size, Qt.black)
def save(self, stream, kind=None):
pass