Merge branch 'new_design_main_page' into dev_dylan

src/View/MainWindow.py

@@ -61,6 +61,7 @@ from View.WaitingDialog import WaitingDialog
 
 from View.MainWindowTabInfo import WidgetInfo
 from View.MainWindowTabChecker import WidgetChecker
+from View.MainWindowTabGraph import WidgetGraph
 
 from View.Configure.Window import ConfigureWindow
 from View.Study.Window import NewStudyWindow
@@ -235,6 +236,7 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
 
     def setup_tab(self):
         self.setup_tab_info()
+        self.setup_tab_graph()
         self.setup_tab_checker()
 
     def setup_tab_info(self):
@@ -261,6 +263,19 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
             self._trad["tab_checker_name"]
         )
 
+    def setup_tab_graph(self):
+        tab_widget = self.findChild(QTabWidget, "tabWidget")
+
+        self._tab_widget_graph = WidgetGraph(
+            study=self._study, trad=self._trad, parent=self
+        )
+
+        tab_widget.insertTab(
+            0, self._tab_widget_graph,
+            self._trad["tab_graph_name"]
+        )
+        tab_widget.setCurrentWidget(self._tab_widget_graph)
+
     def enable_actions(self, action: str, enable: bool):
         """Enable of disable an action componant
 
@@ -545,6 +560,7 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
             self._do_propagate_update_rec(window, keys)
 
         self._tab_widget_checker.update(modules=keys)
+        self._tab_widget_graph.update()
 
     def _do_propagate_update_info_tab(self, keys):
         modules = Modules.modelling_list()
@@ -570,6 +586,10 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
             self._tab_widget_info.study = self._study
             self._tab_widget_info.update()
 
+        if self._tab_widget_graph.study != self._study:
+            self._tab_widget_graph.study = self._study
+            self._tab_widget_graph.update()
+
         if self._tab_widget_checker.study != self._study:
             self._tab_widget_checker.study = self._study
             self._tab_widget_checker.update(modules=Modules.STUDY)
@@ -1287,6 +1307,9 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
                 return
 
             self.network = NetworkWindow(study=self._study, parent=self)
+            self.network.networkChanged.connect(
+                self._tab_widget_graph.update, Qt.QueuedConnection
+            )
             self.network.show()
 
     def open_scenarios(self):

src/View/MainWindowTabGraph.py

@@ -0,0 +1,139 @@
+# MainWindowTabGraph.py -- Pamhyr
+# Copyright (C) 2026  INRAE
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# -*- coding: utf-8 -*-
+
+from View.Tools.Plot.PamhyrCanvas import MplCanvas
+from View.Tools.Plot.PamhyrToolbar import PamhyrPlotToolbar
+from View.PlotXY import PlotXY
+from View.Network.GraphWidget import GraphWidget
+
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (
+    QWidget, QGroupBox, QLabel, QHBoxLayout, QVBoxLayout, QSplitter,
+)
+
+
+class WidgetGraph(QWidget):
+    """Read-only network graph displayed in the main window."""
+
+    def __init__(self, study=None, trad=None, parent=None):
+        super(WidgetGraph, self).__init__(parent)
+
+        self._study = study
+        self._trad = trad
+        self._plot_river = None
+
+        layout = QHBoxLayout(self)
+        self._splitter = QSplitter(Qt.Horizontal, self)
+        self._splitter.setChildrenCollapsible(False)
+        layout.addWidget(self._splitter)
+        self._graph_widget = None
+
+        self._graph_group = QGroupBox(
+            self._trad["graph_network_title"], self
+        )
+        self._graph_layout = QVBoxLayout(self._graph_group)
+
+        self._graph_title = QLabel(self._graph_group)
+        self._graph_title.setTextFormat(Qt.PlainText)
+        self._graph_title.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
+        self._graph_title.setWordWrap(True)
+        self._graph_layout.addWidget(self._graph_title)
+        self._update_graph_title()
+        self._splitter.addWidget(self._graph_group)
+
+        self.canvas = MplCanvas(width=5, height=4, dpi=100)
+        self.canvas.setObjectName("canvas_graph")
+        self.toolbar = PamhyrPlotToolbar(
+            self.canvas, self,
+            items=["home", "zoom", "save", "iso", "back/forward", "move"]
+        )
+        self._plot_group = QGroupBox(
+            self._trad["graph_geographic_title"], self
+        )
+        self._plot_layout = QVBoxLayout(self._plot_group)
+        self._plot_layout.addWidget(self.toolbar)
+        self._plot_layout.addWidget(self.canvas, 1)
+        self._splitter.addWidget(self._plot_group)
+        self._splitter.setStretchFactor(0, 1)
+        self._splitter.setStretchFactor(1, 1)
+        self._splitter.setSizes([1000, 1000])
+
+        self.plot = PlotXY(
+            canvas=self.canvas,
+            data=None,
+            trad=self._trad,
+            toolbar=self.toolbar,
+            parent=self
+        )
+
+    @property
+    def study(self):
+        return self._study
+
+    @study.setter
+    def study(self, study):
+        self._study = study
+        self._update_graph_title()
+
+    def _update_graph_title(self):
+        self._graph_title.setText(
+            self._study.name if self._study is not None else ""
+        )
+
+    def update(self):
+        river = self._study.river if self._study is not None else None
+        view = None
+        if river is not None and river is self._plot_river:
+            axes = self.canvas.axes
+            if axes.has_data():
+                view = (axes.get_xlim(), axes.get_ylim(),
+                        axes.get_aspect(), axes.get_adjustable())
+
+        self._update_graph_title()
+        if (self._graph_widget is not None
+            and (self._study is None
+                 or self._graph_widget.graph is not self._study.river)):
+            self._graph_layout.removeWidget(self._graph_widget)
+            self._graph_widget.deleteLater()
+            self._graph_widget = None
+
+        if self._study is not None and self._graph_widget is None:
+            self._graph_widget = GraphWidget(
+                self._study.river,
+                parent=self,
+                only_display=True,
+                trad=self._trad,
+            )
+            self._graph_layout.addWidget(self._graph_widget, 1)
+        elif self._graph_widget is not None:
+            self._graph_widget.display_update()
+
+        data = None
+        geotiff = None
+        if self._study is not None:
+            data = self._study.river.enable_edges()
+            geotiff = self._study.river.geotiff
+
+        self.plot = PlotXY(
+            canvas=self.canvas,
+            data=data,
+            geotiff=geotiff,
+            trad=self._trad,
+            toolbar=self.toolbar,
+            parent=self
+        )
+        self.plot.update()
+        self._plot_river = river
+        if view is not None:
+            x_limits, y_limits, aspect, adjustable = view
+            self.canvas.axes.set_aspect(aspect, adjustable=adjustable)
+            self.canvas.axes.set_xlim(x_limits)
+            self.canvas.axes.set_ylim(y_limits)
+            self.canvas.draw_idle()

src/View/Network/GraphWidget.py

@@ -448,6 +448,7 @@ class NewEdgeLine(QGraphicsItem):
 class GraphWidget(QGraphicsView):
     changeEdge = pyqtSignal(object)
     changeNode = pyqtSignal(object)
+    currentEdgeChanged = pyqtSignal()
 
     def __init__(self, graph, parent=None,
                  min_size=(400, 400), max_size=None,
@@ -476,6 +477,7 @@ class GraphWidget(QGraphicsView):
         self.m_origin_x = 0.0
         self.m_origin_y = 0.0
         self.clicked = False
+        self._panning = False
 
         self.setup_scene(min_size, max_size, size)
 
@@ -491,8 +493,8 @@ class GraphWidget(QGraphicsView):
         self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
         self.setResizeAnchor(QGraphicsView.AnchorViewCenter)
 
-        self.scale(1, 1)
+        self.scale(0.7, 0.7)
-        self.previousScale = 1
+        self.previousScale = 0.7
         self.centerOn(1000.0, 1000.0)
 
         if min_size:
@@ -667,6 +669,13 @@ class GraphWidget(QGraphicsView):
         Returns:
             Nothing
         """
+        # Scene items are destroyed by clear(); do not retain hover/selection
+        # references to them when refreshing another view of the same graph.
+        self._selected_item = None
+        self._selected_new_edge_src_node = None
+        self._current_edge = None
+        self._current_moved_node = None
+        self.tmp_line = None
         self.scene().clear()
         self.create_items()
 
@@ -875,6 +884,9 @@ class GraphWidget(QGraphicsView):
 
             if previous_edge:
                 previous_edge.update()
+            edge.update()
+            if previous_edge is not edge:
+                self.currentEdgeChanged.emit()
         except Exception as e:
             logger.warning(str(e))
 
@@ -937,6 +949,8 @@ class GraphWidget(QGraphicsView):
 
     def mousePressEvent(self, event):
         if self._only_display:
+            if event.button() == Qt.LeftButton:
+                self._start_pan(event)
             return
 
         if event.button() == Qt.RightButton \
@@ -959,6 +973,12 @@ class GraphWidget(QGraphicsView):
             self._selected_new_edge_src_node = None
 
             items = self.items(event.pos())
+            if event.button() == Qt.LeftButton and not any(
+                isinstance(item, (NodeItem, EdgeItem, NodeText))
+                for item in items
+            ):
+                self._start_pan(event)
+                return
             if items and type(items[0]) is EdgeItem:
                 edge = items[0]
                 if edge:
@@ -1007,7 +1027,10 @@ class GraphWidget(QGraphicsView):
     def mouseReleaseEvent(self, event):
         self.clicked = False
 
-        if self._only_display:
+        if self._panning or self._only_display:
+            self._panning = False
+            self.viewport().unsetCursor()
+            event.accept()
             return
 
         locked = self.graph._status.is_read_only()
@@ -1029,7 +1052,28 @@ class GraphWidget(QGraphicsView):
         self.update()
         super(GraphWidget, self).mouseReleaseEvent(event)
 
+    def _start_pan(self, event):
+        self.clicked = True
+        self._panning = True
+        self.m_origin_x = event.x()
+        self.m_origin_y = event.y()
+        self.viewport().setCursor(Qt.ClosedHandCursor)
+        event.accept()
+
     def mouseMoveEvent(self, event):
+        if self._panning or self._only_display:
+            if self._panning and event.buttons() & Qt.LeftButton:
+                dx = event.x() - self.m_origin_x
+                dy = event.y() - self.m_origin_y
+                horizontal = self.horizontalScrollBar()
+                vertical = self.verticalScrollBar()
+                horizontal.setValue(horizontal.value() - dx)
+                vertical.setValue(vertical.value() - dy)
+                self.m_origin_x = event.x()
+                self.m_origin_y = event.y()
+                event.accept()
+            return
+
         pos = self.mapToScene(event.pos())
         locked = self.graph._status.is_read_only()
 
@@ -1061,20 +1105,6 @@ class GraphWidget(QGraphicsView):
 
         # If state is "move"
         if self._state == "move":
-            # Move on scene
-            if not self.selected_item():
-                if event.buttons() & Qt.LeftButton:
-                    old_p = self.mapToScene(
-                        int(self.m_origin_x), int(self.m_origin_y)
-                    )
-                    new_p = self.mapToScene(event.pos())
-                    translation = new_p - old_p
-
-                    self.translate(translation.x(), translation.y())
-
-                    self.m_origin_x = event.x()
-                    self.m_origin_y = event.y()
-
             # Propagate event
             self.update()
             super(GraphWidget, self).mouseMoveEvent(event)

src/View/Network/Window.py

@@ -58,6 +58,8 @@ _translate = QCoreApplication.translate
 
 
 class NetworkWindow(PamhyrWindow):
+    networkChanged = pyqtSignal()
+
     _pamhyr_ui = "Network"
     _pamhyr_name = "River network"
 
@@ -140,6 +142,8 @@ class NetworkWindow(PamhyrWindow):
         self._graph_layout.addWidget(self._graph_widget)
 
     def setup_connections(self):
+        self._undo_stack.indexChanged.connect(self.networkChanged)
+        self._graph_widget.currentEdgeChanged.connect(self.networkChanged)
         self._nodes_model.dataChanged.connect(self.update)
         self._reachs_model.dataChanged.connect(
             self._graph_widget.display_update)

src/View/Translate.py

@@ -175,6 +175,15 @@ class MainTranslate(UnitTranslate):
         self._dict["tab_checker_name"] = _translate(
             "MainWindow", "Checks"
         )
+        self._dict["tab_graph_name"] = _translate(
+            "MainWindow", "Graph"
+        )
+        self._dict["graph_network_title"] = _translate(
+            "MainWindow", "Hydrographic network"
+        )
+        self._dict["graph_geographic_title"] = _translate(
+            "MainWindow", "Geographic view"
+        )
 
         self._dict["open_debug"] = _translate(
             "MainWindow", "Open debug window"