feat(winetricks): added preloader to tabble

Signed-off-by: Boris Yumankulov <boria138@altlinux.org>

portprotonqt/preloader.py

@@ -0,0 +1,49 @@
+import time
+
+from PySide6.QtCore import QRect
+from PySide6.QtGui import QPainter, QPen, QBrush, Qt, QColor, QConicalGradient
+from PySide6.QtWidgets import QWidget
+
+class Preloader(QWidget):
+    def __init__(self, speed=180.0, line_line_width=20, color=QColor(0, 120, 215), parent=None):
+        super().__init__(parent)
+        self.setFixedSize(150, 150)
+        self._speed = speed
+        self._line_width = line_line_width
+        self._color1 = color
+        self._color2 = QColor(color.red(), color.green(), color.blue(), 0)
+        self._start_time = time.time()
+
+    def showEvent(self, event):
+        self._start_time = time.time()
+
+    def paintEvent(self, event):
+        rect = self._get_preloader_rect()
+        center = rect.center()
+        painter = QPainter(self)
+        painter.setRenderHint(QPainter.RenderHint.Antialiasing)
+        painter.setPen(self._get_pen())
+        painter.translate(center)
+        painter.rotate(self._get_angle())
+        painter.translate(-center)
+        painter.drawArc(rect, 0, 270 * 16)
+        self.update()
+
+    def _get_pen(self) -> QPen:
+        gradient = QConicalGradient()
+        gradient.setCenter(self.rect().center())
+        gradient.setColorAt(0, self._color1)
+        gradient.setColorAt(1, self._color2)
+        pen = QPen(QBrush(gradient), self._line_width)
+        pen.setCapStyle(Qt.PenCapStyle.RoundCap)
+        return pen
+
+    def _get_angle(self) -> float:
+        duration = time.time() - self._start_time
+        return (self._speed * duration) % 360.0
+
+    def _get_preloader_rect(self) -> QRect:
+        size = self._line_width // 2
+        rect = self.rect()
+        rect.adjust(size, size, -size, -size)
+        return rect