Drag&Drop: auto-hide windows that can't be drop targets on mouseover

apps/openmw/mwgui/mapwindow.cpp

@@ -373,8 +373,9 @@ namespace MWGui
 
     // ------------------------------------------------------------------------------------------
 
-    MapWindow::MapWindow(const std::string& cacheDir)
-        : MWGui::WindowPinnableBase("openmw_map_window.layout")
+    MapWindow::MapWindow(DragAndDrop* drag, const std::string& cacheDir)
+        : WindowPinnableBase("openmw_map_window.layout")
+        , NoDrop(drag, mMainWidget)
         , mGlobal(false)
         , mGlobalMap(0)
         , mGlobalMapRender(0)

apps/openmw/mwgui/mapwindow.hpp

@@ -75,10 +75,10 @@ namespace MWGui
         float mLastDirectionY;
     };
 
-    class MapWindow : public MWGui::WindowPinnableBase, public LocalMapBase
+    class MapWindow : public MWGui::WindowPinnableBase, public LocalMapBase, public NoDrop
     {
     public:
-        MapWindow(const std::string& cacheDir);
+        MapWindow(DragAndDrop* drag, const std::string& cacheDir);
         virtual ~MapWindow();
 
         void setCellName(const std::string& cellName);
@@ -92,6 +92,8 @@ namespace MWGui
 
         virtual void open();
 
+        void onFrame(float dt) { NoDrop::onFrame(dt); }
+
     private:
         void onDragStart(MyGUI::Widget* _sender, int _left, int _top, MyGUI::MouseButton _id);
         void onMouseDrag(MyGUI::Widget* _sender, int _left, int _top, MyGUI::MouseButton _id);

apps/openmw/mwgui/spellwindow.cpp

@@ -42,8 +42,9 @@ namespace
 
 namespace MWGui
 {
-    SpellWindow::SpellWindow()
+    SpellWindow::SpellWindow(DragAndDrop* drag)
         : WindowPinnableBase("openmw_spell_window.layout")
+        , NoDrop(drag, mMainWidget)
         , mHeight(0)
         , mWidth(0)
     {

apps/openmw/mwgui/spellwindow.hpp

@@ -7,14 +7,16 @@ namespace MWGui
 {
     class SpellIcons;
 
-    class SpellWindow : public WindowPinnableBase
+    class SpellWindow : public WindowPinnableBase, public NoDrop
     {
     public:
-        SpellWindow();
+        SpellWindow(DragAndDrop* drag);
         virtual ~SpellWindow();
 
         void updateSpells();
 
+        void onFrame(float dt) { NoDrop::onFrame(dt); }
+
     protected:
         MyGUI::ScrollView* mSpellView;
         MyGUI::Widget* mEffectBox;

apps/openmw/mwgui/statswindow.cpp

@@ -18,8 +18,9 @@ namespace MWGui
 
     const int StatsWindow::sLineHeight = 18;
 
-    StatsWindow::StatsWindow ()
+    StatsWindow::StatsWindow (DragAndDrop* drag)
       : WindowPinnableBase("openmw_stats_window.layout")
+      , NoDrop(drag, mMainWidget)
       , mSkillView(NULL)
       , mMajorSkills()
       , mMinorSkills()
@@ -219,11 +220,13 @@ namespace MWGui
         updateSkillArea();
     }
 
-    void StatsWindow::onFrame ()
+    void StatsWindow::onFrame (float dt)
     {
         if (!mMainWidget->getVisible())
             return;
 
+        NoDrop::onFrame(dt);
+
         MWWorld::Ptr player = MWBase::Environment::get().getWorld()->getPlayerPtr();
         const MWMechanics::NpcStats &PCstats = MWWorld::Class::get(player).getNpcStats(player);
 

apps/openmw/mwgui/statswindow.hpp

@@ -10,17 +10,17 @@ namespace MWGui
 {
     class WindowManager;
 
-    class StatsWindow : public WindowPinnableBase
+    class StatsWindow : public WindowPinnableBase, public NoDrop
     {
         public:
             typedef std::map<std::string, int> FactionList;
 
             typedef std::vector<int> SkillList;
 
-            StatsWindow();
+            StatsWindow(DragAndDrop* drag);
 
             /// automatically updates all the data in the stats window, but only if it has changed.
-            void onFrame();
+            void onFrame(float dt);
 
             void setBar(const std::string& name, const std::string& tname, int val, int max);
             void setPlayerName(const std::string& playerName);

apps/openmw/mwgui/windowbase.cpp

@@ -1,6 +1,7 @@
 #include "windowbase.hpp"
 
 #include "../mwbase/windowmanager.hpp"
+#include "container.hpp"
 
 using namespace MWGui;
 
@@ -50,3 +51,36 @@ void WindowModal::close()
 {
     MyGUI::InputManager::getInstance ().removeWidgetModal (mMainWidget);
 }
+
+NoDrop::NoDrop(DragAndDrop *drag, MyGUI::Widget *widget)
+    : mDrag(drag), mWidget(widget), mTransparent(false)
+{
+}
+
+void NoDrop::onFrame(float dt)
+{
+    MyGUI::IntPoint mousePos = MyGUI::InputManager::getInstance().getMousePosition();
+
+    if (mDrag->mIsOnDragAndDrop)
+    {
+        MyGUI::Widget* focus = MyGUI::InputManager::getInstance().getMouseFocusWidget();
+        while (focus && focus != mWidget)
+            focus = focus->getParent();
+
+        if (focus == mWidget)
+            mTransparent = true;
+    }
+    if (!mWidget->getAbsoluteCoord().inside(mousePos))
+        mTransparent = false;
+
+    if (mTransparent)
+    {
+        mWidget->setNeedMouseFocus(false); // Allow click-through
+        mWidget->setAlpha(std::max(0.13f, mWidget->getAlpha() - dt*5));
+    }
+    else
+    {
+        mWidget->setNeedMouseFocus(true);
+        mWidget->setAlpha(std::min(1.0f, mWidget->getAlpha() + dt*5));
+    }
+}

apps/openmw/mwgui/windowbase.hpp

@@ -11,6 +11,7 @@ namespace MWBase
 namespace MWGui
 {
     class WindowManager;
+    class DragAndDrop;
 
     class WindowBase: public OEngine::GUI::Layout
     {
@@ -42,6 +43,21 @@ namespace MWGui
         virtual void open();
         virtual void close();
     };
+
+    /// A window that cannot be the target of a drag&drop action.
+    /// When hovered with a drag item, the window will become transparent and allow click-through.
+    class NoDrop
+    {
+    public:
+        NoDrop(DragAndDrop* drag, MyGUI::Widget* widget);
+
+        void onFrame(float dt);
+
+    private:
+        MyGUI::Widget* mWidget;
+        DragAndDrop* mDrag;
+        bool mTransparent;
+    };
 }
 
 #endif

apps/openmw/mwgui/windowmanagerimp.cpp

@@ -200,9 +200,9 @@ namespace MWGui
 
         mRecharge = new Recharge();
         mMenu = new MainMenu(w,h);
-        mMap = new MapWindow("");
+        mMap = new MapWindow(mDragAndDrop, "");
         trackWindow(mMap, "map");
-        mStatsWindow = new StatsWindow();
+        mStatsWindow = new StatsWindow(mDragAndDrop);
         trackWindow(mStatsWindow, "stats");
         mConsole = new Console(w,h, mConsoleOnlyScripts);
         trackWindow(mConsole, "console");
@@ -227,7 +227,7 @@ namespace MWGui
         mConfirmationDialog = new ConfirmationDialog();
         mAlchemyWindow = new AlchemyWindow();
         trackWindow(mAlchemyWindow, "alchemy");
-        mSpellWindow = new SpellWindow();
+        mSpellWindow = new SpellWindow(mDragAndDrop);
         trackWindow(mSpellWindow, "spells");
         mQuickKeysMenu = new QuickKeysMenu();
         mLevelupDialog = new LevelupDialog();
@@ -709,7 +709,9 @@ namespace MWGui
 
         mInventoryWindow->onFrame();
 
-        mStatsWindow->onFrame();
+        mStatsWindow->onFrame(frameDuration);
+        mMap->onFrame(frameDuration);
+        mSpellWindow->onFrame(frameDuration);
 
         mWaitDialog->onFrame(frameDuration);