2 files changed, 74 insertions, 29 deletions

@@ -53,6 +53,7 @@ SubwayMap::SubwayMap(wxWindow *parent) : wxPanel(parent, wxID_ANY) {
   Bind(wxEVT_MOTION, &SubwayMap::OnMouseMove, this);
   Bind(wxEVT_MOUSEWHEEL, &SubwayMap::OnMouseScroll, this);
   Bind(wxEVT_LEAVE_WINDOW, &SubwayMap::OnMouseLeave, this);
+  Bind(wxEVT_LEFT_DOWN, &SubwayMap::OnMouseClick, this);
   Bind(wxEVT_TIMER, &SubwayMap::OnTimer, this);
 
   zoom_slider_ = new wxSlider(this, wxID_ANY, 0, 0, 8, {15, 15});
@@ -216,6 +217,8 @@ void SubwayMap::OnPaint(wxPaintEvent &event) {
   }
 
   if (hovered_item_) {
+    // Note that these requirements are duplicated on OnMouseClick so that it
+    // knows when an item has a hover effect.
     const SubwayItem &subway_item = GD_GetSubwayItem(*hovered_item_);
     if (subway_item.door && !GetDoorRequirements(*subway_item.door).empty()) {
       const std::map<std::string, bool> &report =
@@ -354,44 +357,22 @@ void SubwayMap::OnMouseMove(wxMouseEvent &event) {
 
   std::vector<int> hovered = tree_->query(
       {static_cast<float>(mouse_pos.x), static_cast<float>(mouse_pos.y), 2, 2});
-  std::optional<int> new_hovered_item;
   if (!hovered.empty()) {
-    new_hovered_item = hovered[0];
+    actual_hover_= hovered[0];
+  } else {
+    actual_hover_ = std::nullopt;
   }
 
-  if (new_hovered_item != hovered_item_) {
-    hovered_item_ = new_hovered_item;
+  if (!sticky_hover_ && actual_hover_ != hovered_item_) {
+    hovered_item_ = actual_hover_;
 
     Refresh();
   }
 
-  int scroll_x;
-  int scroll_y;
-  if (event.GetPosition().x < GetSize().GetWidth() / 9) {
-    scroll_x = 20;
-  } else if (event.GetPosition().x < GetSize().GetWidth() / 6) {
-    scroll_x = 5;
-  } else if (event.GetPosition().x > 8 * GetSize().GetWidth() / 9) {
-    scroll_x = -20;
-  } else if (event.GetPosition().x > 5 * GetSize().GetWidth() / 6) {
-    scroll_x = -5;
-  } else {
-    scroll_x = 0;
-  }
-  if (event.GetPosition().y < GetSize().GetHeight() / 9) {
-    scroll_y = 20;
-  } else if (event.GetPosition().y < GetSize().GetHeight() / 6) {
-    scroll_y = 5;
-  } else if (event.GetPosition().y > 8 * GetSize().GetHeight() / 9) {
-    scroll_y = -20;
-  } else if (event.GetPosition().y > 5 * GetSize().GetHeight() / 6) {
-    scroll_y = -5;
-  } else {
-    scroll_y = 0;
+  if (scroll_mode_) {
+    EvaluateScroll(event.GetPosition());
   }
 
-  SetScrollSpeed(scroll_x, scroll_y);
-
   mouse_position_ = event.GetPosition();
 
   event.Skip();
@@ -417,6 +398,35 @@ void SubwayMap::OnMouseLeave(wxMouseEvent &event) {
   mouse_position_ = std::nullopt;
 }
 
+void SubwayMap::OnMouseClick(wxMouseEvent &event) {
+  if (sticky_hover_) {
+    sticky_hover_ = false;
+
+    if (actual_hover_ != hovered_item_) {
+      hovered_item_ = actual_hover_;
+
+      Refresh();
+    }
+  } else if (hovered_item_) {
+    const SubwayItem &subway_item = GD_GetSubwayItem(*hovered_item_);
+    if ((subway_item.door && !GetDoorRequirements(*subway_item.door).empty()) ||
+        networks_.IsItemInNetwork(*hovered_item_)) {
+      sticky_hover_ = true;
+    }
+  } else if (scroll_mode_) {
+    scroll_mode_ = false;
+
+    SetScrollSpeed(0, 0);
+  } else if (event.GetPosition().x < GetSize().GetWidth() / 6 ||
+      event.GetPosition().x > 5 * GetSize().GetWidth() / 6 ||
+      event.GetPosition().y < GetSize().GetHeight() / 6 ||
+      event.GetPosition().y > 5 * GetSize().GetHeight() / 6) {
+    scroll_mode_ = true;
+
+    EvaluateScroll(event.GetPosition());
+  }
+}
+
 void SubwayMap::OnTimer(wxTimerEvent &event) {
   SetZoomPos({zoom_x_ + scroll_x_, zoom_y_ + scroll_y_});
   Refresh();
@@ -504,6 +514,35 @@ void SubwayMap::Redraw() {
   }
 }
 
+void SubwayMap::EvaluateScroll(wxPoint pos) {
+  int scroll_x;
+  int scroll_y;
+  if (pos.x < GetSize().GetWidth() / 9) {
+    scroll_x = 20;
+  } else if (pos.x < GetSize().GetWidth() / 6) {
+    scroll_x = 5;
+  } else if (pos.x > 8 * GetSize().GetWidth() / 9) {
+    scroll_x = -20;
+  } else if (pos.x > 5 * GetSize().GetWidth() / 6) {
+    scroll_x = -5;
+  } else {
+    scroll_x = 0;
+  }
+  if (pos.y < GetSize().GetHeight() / 9) {
+    scroll_y = 20;
+  } else if (pos.y < GetSize().GetHeight() / 6) {
+    scroll_y = 5;
+  } else if (pos.y > 8 * GetSize().GetHeight() / 9) {
+    scroll_y = -20;
+  } else if (pos.y > 5 * GetSize().GetHeight() / 6) {
+    scroll_y = -5;
+  } else {
+    scroll_y = 0;
+  }
+
+  SetScrollSpeed(scroll_x, scroll_y);
+}
+
 wxPoint SubwayMap::MapPosToRenderPos(wxPoint pos) const {
   return {static_cast<int>(pos.x * render_width_ * zoom_ /
                                map_image_.GetSize().GetWidth() +
@@ -32,6 +32,7 @@ class SubwayMap : public wxPanel {
   void OnMouseMove(wxMouseEvent &event);
   void OnMouseScroll(wxMouseEvent &event);
   void OnMouseLeave(wxMouseEvent &event);
+  void OnMouseClick(wxMouseEvent &event);
   void OnTimer(wxTimerEvent &event);
   void OnZoomSlide(wxCommandEvent &event);
 
@@ -41,6 +42,8 @@ class SubwayMap : public wxPanel {
   wxPoint MapPosToVirtualPos(wxPoint pos) const;
   wxPoint RenderPosToMapPos(wxPoint pos) const;
 
+  void EvaluateScroll(wxPoint pos);
+
   void SetZoomPos(wxPoint pos);
   void SetScrollSpeed(int scroll_x, int scroll_y);
   void SetZoom(double zoom, wxPoint static_point);
@@ -60,6 +63,7 @@ class SubwayMap : public wxPanel {
   int zoom_x_ = 0; // in render space
   int zoom_y_ = 0;
 
+  bool scroll_mode_ = false;
   wxTimer* scroll_timer_;
   int scroll_x_ = 0;
   int scroll_y_ = 0;
@@ -74,6 +78,8 @@ class SubwayMap : public wxPanel {
   
   std::unique_ptr<quadtree::Quadtree<int, GetItemBox>> tree_;
   std::optional<int> hovered_item_;
+  std::optional<int> actual_hover_;
+  bool sticky_hover_ = false;
 
   NetworkSet networks_;
   std::set<std::string> checked_paintings_;