[Add] Add toggle labels button.

src/player.cpp

@@ -177,7 +177,7 @@ void Player::DrawHUD(const Frame* cam_frame) {
   Gui::Screen::EnterOrtho();
   glColor3f(.7, .7, .7);
 
-  {
+  if(L3D::world_view->GetShowLabels()) {
     for(std::list<Body*>::iterator i = Space::bodies.begin(); i != Space::bodies.end(); ++i) {
       if((L3D::GetCamType() != L3D::CAM_EXTERNAL) && (*i == this)) continue;
       Body* b = *i;

src/world_view.cpp

@@ -15,6 +15,7 @@ WorldView::WorldView(void): View() {
   float size[2];
   GetSize(size);
 
+  labelsOn = true;
   SetTransparency(true);
 
   commsOptions = new Fixed(size[0], size[1]/2);
@@ -28,6 +29,13 @@ WorldView::WorldView(void): View() {
   wheels_button->onClick.connect(sigc::mem_fun(this, &WorldView::OnChangeWheelsState));
   m_rightButtonBar->Add(wheels_button, 34, 2);
 
+  Gui::MultiStateImageButton* labels_button = new Gui::MultiStateImageButton();
+  labels_button->SetShortcut(SDLK_9, KMOD_NONE);
+  labels_button->AddState(1, "icons/labels_on.png");
+  labels_button->AddState(0, "icons/labels_off.png");
+  labels_button->onClick.connect(sigc::mem_fun(this, &WorldView::OnChangeLabelsState));
+  m_rightButtonBar->Add(labels_button, 98, 2);
+
   m_hyperspaceButton = new Gui::ImageButton("icons/hyperspace_f8.png");
   m_hyperspaceButton->SetShortcut(SDLK_F8, KMOD_NONE);
   m_hyperspaceButton->onClick.connect(sigc::mem_fun(this, &WorldView::OnClickHyperspace));
@@ -59,6 +67,10 @@ void WorldView::OnChangeWheelsState(Gui::MultiStateImageButton* b) {
   L3D::player->SetWheelState(b->GetState());
 }
 
+void WorldView::OnChangeLabelsState(Gui::MultiStateImageButton* b) {
+  labelsOn = b->GetState();
+}
+
 void WorldView::OnClickHyperspace(void) {
   StarSystem* s = L3D::GetSelectedSystem();
   if(s /* && isn's current system. */) {

src/world_view.h

@@ -13,14 +13,17 @@ public:
   matrix4x4d viewingRotation;
   static const float PICK_OBJECT_RECT_SIZE;
   void UpdateCommsOptions(void);
+  bool GetShowLabels(void) { return labelsOn; }
 private:
   Gui::Button* AddCommsOption(const std::string msg, int ypos);
   void OnClickHyperspace(void);
   void OnChangeWheelsState(Gui::MultiStateImageButton* b);
+  void OnChangeLabelsState(Gui::MultiStateImageButton* b);
   virtual bool OnMouseDown(Gui::MouseButtonEvent* e);
   Body* PickBody(const float screenX, const float screenY) const;
   Gui::ImageButton* m_hyperspaceButton;
   GLuint m_bgstarsDlist;
   Gui::Fixed* commsOptions;
+  bool labelsOn;
 };