update exe GUI build

examples/gui/transport_icons.py

@@ -2,10 +2,11 @@
 
 from __future__ import annotations
 
+import math
 from typing import Literal
 
 from PyQt5.QtCore import QPointF, QRectF, Qt
-from PyQt5.QtGui import QColor, QIcon, QPainter, QPixmap, QPolygonF
+from PyQt5.QtGui import QColor, QIcon, QPainter, QPen, QPixmap, QPolygonF
 
 TransportKind = Literal["play", "pause"]
 
@@ -48,3 +49,46 @@ def transport_icon(kind: TransportKind, color: str, *, size: int = _DEFAULT_ICON
 
     painter.end()
     return QIcon(pixmap)
+
+
+def reset_icon(color: str, *, size: int = 16) -> QIcon:
+    """Build a circular reset / refresh arrow in ``color`` (#rrggbb)."""
+    pixmap = QPixmap(size, size)
+    pixmap.fill(Qt.transparent)
+
+    painter = QPainter(pixmap)
+    painter.setRenderHint(QPainter.Antialiasing, True)
+    stroke = max(1.4, size * 0.11)
+    pen = QPen(QColor(color), stroke, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin)
+    painter.setPen(pen)
+    painter.setBrush(Qt.NoBrush)
+
+    margin = size * 0.2
+    rect = QRectF(margin, margin, size - 2.0 * margin, size - 2.0 * margin)
+    start_deg = 55.0
+    painter.drawArc(rect, int(start_deg * 16), int(-280 * 16))
+
+    cx, cy = rect.center().x(), rect.center().y()
+    radius = rect.width() / 2.0
+    angle_rad = math.radians(start_deg)
+    tip_x = cx + radius * math.cos(angle_rad)
+    tip_y = cy - radius * math.sin(angle_rad)
+    tangent = angle_rad + math.pi / 2.0
+    head = max(2.0, size * 0.18)
+    wing = max(2.0, size * 0.14)
+    painter.setBrush(QColor(color))
+    painter.setPen(Qt.NoPen)
+    painter.drawPolygon(
+        QPolygonF(
+            [
+                QPointF(tip_x, tip_y),
+                QPointF(tip_x - head * math.cos(tangent) + wing * math.sin(tangent),
+                        tip_y + head * math.sin(tangent) + wing * math.cos(tangent)),
+                QPointF(tip_x - head * math.cos(tangent) - wing * math.sin(tangent),
+                        tip_y + head * math.sin(tangent) - wing * math.cos(tangent)),
+            ]
+        )
+    )
+
+    painter.end()
+    return QIcon(pixmap)