diff --git a/gui/sky_tab.py b/gui/sky_tab.py
index 9ac4115..ec5da5f 100644
--- a/gui/sky_tab.py
+++ b/gui/sky_tab.py
@@ -1,4 +1,5 @@
-import sys, os
+import sys, os, time
+from collections import deque
_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
_gui = os.path.dirname(os.path.abspath(__file__))
@@ -17,18 +18,22 @@ from PyQt5.QtGui import QColor, QBrush
from data_model import ReceiverManager, GNSS_NAMES, GNSS_COLORS
from sky_widget import SkyPlotWidget
-_COL_HEADERS = ['GNSS', 'SV', 'Elev °', 'Az °', 'C/N₀', 'Fix', 'Receiver']
+_COL_HEADERS = ['GNSS', 'SV', 'Elev °', 'Az °', 'C/N₀', 'Fix', 'Receiver', 'Trail']
+_COL_TRAIL = len(_COL_HEADERS) - 1
+_TRAIL_MAXLEN = 3600 # 1 hour at 1 Hz
class SkyTab(QWidget):
def __init__(self, model: ReceiverManager):
super().__init__()
self._model = model
- self._store: dict = {} # (rid, gnss_id, sv_id) -> SatelliteData
- self._table_keys: list = [] # current row order as (rid, gnss_id, sv_id)
- self._pdop: dict = {} # rid -> float
- self._info_cards: dict = {} # rid -> QFrame
- self._info_labels: dict = {} # rid -> (lbl_pdop, lbl_visible, lbl_used)
+ self._store: dict = {} # (rid, gnss_id, sv_id) -> SatelliteData
+ self._table_keys: list = [] # current row order as (rid, gnss_id, sv_id)
+ self._pdop: dict = {} # rid -> float
+ self._info_cards: dict = {} # rid -> QFrame
+ self._info_labels: dict = {} # rid -> (lbl_pdop, lbl_visible, lbl_used)
+ self._trail: dict = {} # (rid, gnss_id, sv_id) -> deque[(elev, azim)]
+ self._trail_enabled: dict = {} # (rid, gnss_id, sv_id) -> bool
outer = QVBoxLayout(self)
outer.setContentsMargins(4, 4, 4, 4)
@@ -66,11 +71,18 @@ class SkyTab(QWidget):
self._table = QTableWidget()
self._table.setColumnCount(len(_COL_HEADERS))
self._table.setHorizontalHeaderLabels(_COL_HEADERS)
- self._table.horizontalHeader().setSectionResizeMode(QHeaderView.ResizeToContents)
- self._table.horizontalHeader().setStretchLastSection(True)
+ hdr = self._table.horizontalHeader()
+ hdr.setSectionResizeMode(QHeaderView.ResizeToContents)
+ hdr.setSectionResizeMode(_COL_TRAIL, QHeaderView.Fixed)
+ hdr.setStretchLastSection(False)
+ hdr.sectionClicked.connect(self._on_header_clicked)
+ self._table.setColumnWidth(_COL_TRAIL, 42)
+ self._table.horizontalHeader().setToolTip(
+ "Click 'Trail' header to select / deselect all")
self._table.setEditTriggers(QTableWidget.NoEditTriggers)
self._table.setSelectionBehavior(QTableWidget.SelectRows)
self._table.setAlternatingRowColors(False)
+ self._table.itemChanged.connect(self._on_table_item_changed)
splitter.addWidget(self._table)
splitter.setStretchFactor(0, 2)
@@ -89,7 +101,7 @@ class SkyTab(QWidget):
model.satellite_update.connect(self._on_sat_update)
model.pdop_update.connect(self._on_pdop_update)
- # ── Source list management ────────────────────────────────────────────────
+ # ── Source list management ───────────────────────────────────────────���────
def _on_receiver_added(self, rid: str):
item = QListWidgetItem(f" {rid} ")
@@ -98,13 +110,12 @@ class SkyTab(QWidget):
item.setData(Qt.UserRole, rid)
self._src_list.addItem(item)
- # Info card for this receiver
card = QFrame()
card.setFrameShape(QFrame.Box)
cl = QHBoxLayout(card)
cl.setContentsMargins(8, 1, 8, 1)
cl.setSpacing(10)
- name_lbl = QLabel(f"{rid}")
+ name_lbl = QLabel(f"{rid}")
lbl_pdop = QLabel("pDOP: —")
lbl_visible = QLabel("Visible: —")
lbl_used = QLabel("Used: —")
@@ -119,9 +130,9 @@ class SkyTab(QWidget):
if self._src_list.item(i).data(Qt.UserRole) == rid:
self._src_list.takeItem(i)
break
- keys = [k for k in self._store if k[0] == rid]
- for k in keys:
- del self._store[k]
+ for k in [k for k in self._store if k[0] == rid]: del self._store[k]
+ for k in [k for k in self._trail if k[0] == rid]: del self._trail[k]
+ for k in [k for k in self._trail_enabled if k[0] == rid]: del self._trail_enabled[k]
self._pdop.pop(rid, None)
card = self._info_cards.pop(rid, None)
if card:
@@ -143,6 +154,14 @@ class SkyTab(QWidget):
return [(k[0], self._store[k])
for k in self._store if k[0] in selected]
+ def _active_trails(self) -> dict:
+ selected = self._selected_rids()
+ result = {}
+ for key, dq in self._trail.items():
+ if key[0] in selected and self._trail_enabled.get(key, False):
+ result[key] = list(dq)
+ return result
+
# ── Info bar ──────────────────────────────────────────────────────────────
def _update_info(self):
@@ -159,8 +178,13 @@ class SkyTab(QWidget):
def _on_sat_update(self, rid: str, sats: list):
for sat in sats:
- self._store[(rid, sat.gnss_id, sat.sv_id)] = sat
- self._sky.update_data(self._visible_sats())
+ key = (rid, sat.gnss_id, sat.sv_id)
+ self._store[key] = sat
+ if key not in self._trail:
+ self._trail[key] = deque(maxlen=_TRAIL_MAXLEN)
+ self._trail[key].append((sat.elevation, sat.azimuth))
+
+ self._sky.update_data(self._visible_sats(), self._active_trails())
self._update_info()
if not self._table_timer.isActive():
self._table_timer.start()
@@ -170,41 +194,77 @@ class SkyTab(QWidget):
self._update_info()
def _refresh_immediate(self):
- """Called on source-checkbox toggle or receiver removal — rebuild now."""
self._table_timer.stop()
visible = self._visible_sats()
- self._sky.update_data(visible)
+ self._sky.update_data(visible, self._active_trails())
self._update_info()
self._rebuild_table(visible)
def _rebuild_table_from_store(self):
self._rebuild_table(self._visible_sats())
+ # ── Trail toggle ──────────────────────────────────────────────────────────
+
+ def _on_table_item_changed(self, item):
+ if item.column() != _COL_TRAIL:
+ return
+ key = item.data(Qt.UserRole)
+ if key is None:
+ return
+ self._trail_enabled[key] = (item.checkState() == Qt.Checked)
+ self._sky.update_data(self._visible_sats(), self._active_trails())
+
+ def _on_header_clicked(self, col: int):
+ if col != _COL_TRAIL:
+ return
+ # Enable all if any are off, otherwise disable all
+ rows = self._table.rowCount()
+ any_off = any(
+ self._table.item(r, _COL_TRAIL).checkState() != Qt.Checked
+ for r in range(rows)
+ if self._table.item(r, _COL_TRAIL)
+ )
+ new_state = Qt.Checked if any_off else Qt.Unchecked
+ self._table.blockSignals(True)
+ for r in range(rows):
+ item = self._table.item(r, _COL_TRAIL)
+ if item:
+ key = item.data(Qt.UserRole)
+ if key:
+ self._trail_enabled[key] = (new_state == Qt.Checked)
+ item.setCheckState(new_state)
+ self._table.blockSignals(False)
+ self._sky.update_data(self._visible_sats(), self._active_trails())
+
# ── Table ─────────────────────────────────────────────────────────────────
def _rebuild_table(self, sats: list):
sorted_sats = sorted(sats, key=lambda x: (x[1].gnss_id, x[1].sv_id))
- new_keys = [(rid, sat.gnss_id, sat.sv_id) for rid, sat in sorted_sats]
+ new_keys = [(rid, sat.gnss_id, sat.sv_id) for rid, sat in sorted_sats]
if new_keys == self._table_keys:
# Only values changed — update in place, scroll position untouched
+ self._table.blockSignals(True)
for row, (_, sat) in enumerate(sorted_sats):
self._table.item(row, 2).setText(f"{sat.elevation:.0f}")
self._table.item(row, 3).setText(f"{sat.azimuth:.0f}")
self._table.item(row, 4).setText(f"{sat.cno:.1f}")
self._table.item(row, 5).setText("✓" if sat.used_in_fix else "")
+ self._table.blockSignals(False)
return
# Satellite set changed — full rebuild
self._table_keys = new_keys
+ self._table.blockSignals(True)
vp = self._table.viewport()
vp.setUpdatesEnabled(False)
self._table.setSortingEnabled(False)
self._table.setRowCount(len(sorted_sats))
for row, (rid, sat) in enumerate(sorted_sats):
+ key = (rid, sat.gnss_id, sat.sv_id)
gnss_name = GNSS_NAMES.get(sat.gnss_id, f'SYS{sat.gnss_id}')
- bg = QColor(GNSS_COLORS.get(sat.gnss_id, '#9E9E9E'))
+ bg = QColor(GNSS_COLORS.get(sat.gnss_id, '#9E9E9E'))
bg.setAlpha(55)
brush = QBrush(bg)
@@ -222,5 +282,14 @@ class SkyTab(QWidget):
self._table.setItem(row, 5, cell("✓" if sat.used_in_fix else ""))
self._table.setItem(row, 6, cell(rid))
+ trail_item = QTableWidgetItem()
+ trail_item.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)
+ trail_item.setCheckState(
+ Qt.Checked if self._trail_enabled.get(key, False) else Qt.Unchecked)
+ trail_item.setData(Qt.UserRole, key)
+ trail_item.setTextAlignment(Qt.AlignCenter)
+ self._table.setItem(row, _COL_TRAIL, trail_item)
+
self._table.setSortingEnabled(True)
vp.setUpdatesEnabled(True)
+ self._table.blockSignals(False)
diff --git a/gui/sky_widget.py b/gui/sky_widget.py
index 4faee05..801ddd6 100644
--- a/gui/sky_widget.py
+++ b/gui/sky_widget.py
@@ -45,13 +45,13 @@ class SkyRenderThread(QThread):
self._queue: Queue = Queue(maxsize=1)
self._running = True
- def submit(self, sats: list, width: int, height: int):
+ def submit(self, sats: list, trails: dict, width: int, height: int):
# Discard any pending (not yet rendered) frame so we always render latest
try:
self._queue.get_nowait()
except Empty:
pass
- self._queue.put((list(sats), width, height))
+ self._queue.put((list(sats), trails, width, height))
def stop(self):
self._running = False
@@ -71,14 +71,14 @@ class SkyRenderThread(QThread):
continue
if item is None:
break
- sats, w, h = item
+ sats, trails, w, h = item
if w > 0 and h > 0:
- img = self._render(sats, w, h)
+ img = self._render(sats, trails, w, h)
self.frame_ready.emit(img)
# ── Drawing (runs in render thread — QPainter on QImage is thread-safe) ──
- def _render(self, sats: list, w: int, h: int) -> QImage:
+ def _render(self, sats: list, trails: dict, w: int, h: int) -> QImage:
img = QImage(w, h, QImage.Format_RGB32)
p = QPainter(img)
@@ -89,6 +89,8 @@ class SkyRenderThread(QThread):
self._draw_bg(p, w, h)
self._draw_grid(p, cx, cy, max_r)
+ if trails:
+ self._draw_trails(p, cx, cy, max_r, trails)
self._draw_satellites(p, cx, cy, max_r, sats)
self._draw_legend(p, sats)
@@ -138,6 +140,27 @@ class SkyRenderThread(QThread):
p.setPen(Qt.NoPen)
p.drawEllipse(QPointF(cx, cy), 3, 3)
+ def _draw_trails(self, p: QPainter, cx, cy, max_r, trails: dict):
+ for (_, gnss_id, _), points in trails.items():
+ n = len(points)
+ if n < 2:
+ continue
+ base_color = _GNSS_QCOLORS.get(gnss_id, _C_LABEL)
+ r, g, b = base_color.red(), base_color.green(), base_color.blue()
+
+ # Subsample to at most 120 points so rendering stays fast
+ step = max(1, n // 120)
+ pts = points[::step]
+ m = len(pts)
+
+ for i in range(1, m):
+ # Alpha fades from 15 (oldest) to 200 (newest)
+ alpha = int(15 + 185 * i / m)
+ p.setPen(QPen(QColor(r, g, b, alpha), 1.5))
+ x1, y1 = _polar_xy(cx, cy, max_r, pts[i - 1][0], pts[i - 1][1])
+ x2, y2 = _polar_xy(cx, cy, max_r, pts[i][0], pts[i][1])
+ p.drawLine(QPointF(x1, y1), QPointF(x2, y2))
+
def _draw_satellites(self, p: QPainter, cx, cy, max_r, sats):
f = QFont(); f.setPointSize(7)
p.setFont(f)
@@ -188,8 +211,9 @@ class SkyPlotWidget(QWidget):
def __init__(self):
super().__init__()
- self._sats: list = []
- self._image: QImage = None
+ self._sats: list = []
+ self._trails: dict = {}
+ self._image: QImage = None
self.setMinimumSize(400, 400)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
@@ -206,16 +230,17 @@ class SkyPlotWidget(QWidget):
# ── Public API ────────────────────────────────────────────────────────────
- def update_data(self, sats: list):
- self._sats = sats
- self._thread.submit(sats, self.width(), self.height())
+ def update_data(self, sats: list, trails: dict = None):
+ self._sats = sats
+ self._trails = trails or {}
+ self._thread.submit(sats, self._trails, self.width(), self.height())
# ── Qt events ─────────────────────────────────────────────────────────────
def resizeEvent(self, event):
super().resizeEvent(event)
if self._sats:
- self._thread.submit(self._sats, self.width(), self.height())
+ self._thread.submit(self._sats, self._trails, self.width(), self.height())
def paintEvent(self, _event):
p = QPainter(self)