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from PyQt5.QtCore import Qt, QRect | ||
from PyQt5.QtGui import QPainter, QBrush, QPixmap, QImage, QColor | ||
from PyQt5.QtWidgets import QWidget | ||
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class PixmapDrawer: | ||
"""Draw pixmap on a widget with radius. | ||
The pixmap will be scaled to the width of the widget. | ||
""" | ||
def __init__(self, img, widget: QWidget, radius: int = 0): | ||
""" | ||
:param widget: a object which has width() and height() method. | ||
""" | ||
self._img = img | ||
self._widget_last_width = widget.width() | ||
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new_img = img.scaledToWidth(self._widget_last_width, Qt.SmoothTransformation) | ||
self._pixmap = QPixmap(new_img) | ||
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self._widget = widget | ||
self._radius = radius | ||
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@classmethod | ||
def from_img_data(cls, img_data, *args, **kwargs): | ||
img = QImage() | ||
img.loadFromData(img_data) | ||
return cls(img, *args, **kwargs) | ||
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def get_img(self) -> QImage: | ||
return self._img | ||
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def get_pixmap(self) -> QPixmap: | ||
return self._pixmap | ||
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def maybe_update_pixmap(self): | ||
if self._widget.width() != self._widget_last_width: | ||
self._widget_last_width = self._widget.width() | ||
new_img = self._img.scaledToWidth(self._widget_last_width, | ||
Qt.SmoothTransformation) | ||
self._pixmap = QPixmap(new_img) | ||
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def draw(self, painter): | ||
if self._pixmap is None: | ||
return | ||
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self.maybe_update_pixmap() | ||
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painter.save() | ||
painter.setRenderHint(QPainter.Antialiasing) | ||
painter.setRenderHint(QPainter.SmoothPixmapTransform) | ||
brush = QBrush(self._pixmap) | ||
painter.setBrush(brush) | ||
painter.setPen(Qt.NoPen) | ||
radius = self._radius | ||
size = self._pixmap.size() | ||
y = (size.height() - self._widget.height()) // 2 | ||
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painter.save() | ||
painter.translate(0, -y) | ||
rect = QRect(0, y, self._widget.width(), self._widget.height()) | ||
if radius == 0: | ||
painter.drawRect(rect) | ||
else: | ||
radius = radius if self._radius >= 1 else self._widget.width() * self._radius | ||
painter.drawRoundedRect(rect, radius, radius) | ||
painter.restore() | ||
painter.restore() | ||
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class AvatarIconDrawer: | ||
def __init__(self, length, padding, fg_color=None): | ||
self._length = length | ||
self._padding = padding | ||
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self.fg_color = fg_color | ||
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def draw(self, painter): | ||
pen = painter.pen() | ||
pen.setWidthF(1.5) | ||
painter.setPen(pen) | ||
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if self.fg_color: | ||
painter.setPen(QColor(self.fg_color)) | ||
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diameter = self._length // 3 | ||
# Draw circle. | ||
painter.drawEllipse(diameter, self._padding, diameter, diameter) | ||
# Draw body. | ||
x, y = self._padding, self._length // 2 | ||
width, height = self._length // 2, self._length // 2 | ||
painter.drawArc(x, y, width, height, 0, 60*16) | ||
painter.drawArc(x, y, width, height, 120*16, 60*16) |
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