feat: add vector icons for transport controls, implement marker hover effects, and update dialog positioning

src/pygui/backend/visualization/wafer_map_item.py

@@ -52,6 +52,8 @@ class WaferMapItem(QQuickPaintedItem):
     sizeChanged     = Signal()
     thicknessChanged = Signal()
     showThicknessChanged = Signal()
+    hoveredIndexChanged = Signal()
+    hoverScaleChanged = Signal()
 
 
     def __init__(self, parent=None):
@@ -68,6 +70,10 @@ class WaferMapItem(QQuickPaintedItem):
         self._thickness_data: list[float] = []
         self._show_thickness: bool = False
         self._thickness_heatmap:QImage | None = None
+        # Hover highlight: index of the marker under the pointer (-1 = none)
+        # and a 1.0->~1.5 grow factor driven by a QML Behavior for a smooth animation.
+        self._hovered_index: int = -1
+        self._hover_scale: float = 1.0
 
         # Dark-theme color defaults (match Theme.qml tokens)
         self._ring_color     = QColor("#2A3441")   # waferRingColor  (toneBorder)
@@ -81,6 +87,12 @@ class WaferMapItem(QQuickPaintedItem):
         self._markers: dict[int, tuple[int, int]] = {}  # sensor index → (px, py)
         self._marker_r: int = 4
         self._heatmap:  QImage | None = None
+        # Size the markers/heatmap were last computed against. On first activation
+        # (e.g. a freshly-created Loader item) width()/height() can still be 0/stale
+        # when `sensors` is first set, computing degenerate marker positions that
+        # never get retried. paint() re-checks this every frame so geometry that
+        # settles after property assignment still gets picked up.
+        self._last_draw_size: int = -1
 
         self.widthChanged.connect(self._on_resize)
         self.heightChanged.connect(self._on_resize)
@@ -213,6 +225,29 @@ class WaferMapItem(QQuickPaintedItem):
         self.showThicknessChanged.emit()
         self.update()
 
+    @Property(int, notify=hoveredIndexChanged)
+    def hoveredIndex(self) -> int:
+        return self._hovered_index
+
+    @hoveredIndex.setter
+    def hoveredIndex(self, val: int) -> None:
+        val = int(val)
+        if val == self._hovered_index:
+            return
+        self._hovered_index = val
+        self.hoveredIndexChanged.emit()
+        self.update()
+
+    @Property(float, notify=hoverScaleChanged)
+    def hoverScale(self) -> float:
+        return self._hover_scale
+
+    @hoverScale.setter
+    def hoverScale(self, val: float) -> None:
+        self._hover_scale = float(val)
+        self.hoverScaleChanged.emit()
+        self.update()
+
     # Colour properties — QML can bind these to Theme tokens
     @Property(QColor, notify=colorsChanged)
     def ringColor(self) -> QColor: return self._ring_color
@@ -440,7 +475,15 @@ class WaferMapItem(QQuickPaintedItem):
     # ── paint ─────────────────────────────────────────────────────────────
 
     def paint(self, painter: QPainter) -> None:
-        ds   = self._draw_size()
+        ds = self._draw_size()
+        if ds != self._last_draw_size:
+            # Geometry settled (or changed) since markers/heatmap were last built
+            # against a stale size — recompute now, at actual paint time.
+            self._last_draw_size = ds
+            self._compute_markers()
+            self._rebuild_heatmap()
+            self._rebuild_thickness()
+
         r_px = int(ds / 2 - 4)
         cx, cy = self._center()
 
@@ -544,10 +587,22 @@ class WaferMapItem(QQuickPaintedItem):
                 self._bands[i] if i < len(self._bands) else "in_range",
                 self._in_range_color,
             )
+            is_hovered = i == self._hovered_index
+            marker_r = int(round(r * self._hover_scale)) if is_hovered else r
+
+            if is_hovered:
+                # Soft glow ring behind the marker, growing with hoverScale.
+                glow_r = int(round(marker_r * 1.9))
+                glow_color = QColor(color)
+                glow_color.setAlpha(70)
+                painter.setPen(Qt.PenStyle.NoPen)
+                painter.setBrush(QBrush(glow_color))
+                painter.drawEllipse(px - glow_r, py - glow_r, 2 * glow_r, 2 * glow_r)
+
             # Filled circle with thin dark outline for contrast over heatmap
             painter.setPen(QPen(QColor(0, 0, 0, 100), 1))
             painter.setBrush(QBrush(color))
-            painter.drawEllipse(px - r, py - r, 2 * r, 2 * r)
+            painter.drawEllipse(px - marker_r, py - marker_r, 2 * marker_r, 2 * marker_r)
 
             if self._show_labels:
                 has_temp = i < len(self._values)