From 48f2996ccc789d740edc4b425a3e00f378a9095a Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 23 Sep 2012 03:33:47 +0300
Subject: Restore mouse cursor if window set visible and have mouse over.

---
 src/gui/gui.cpp            | 32 ++++++++++++++++++++++++++++++++
 src/gui/gui.h              |  6 ++++++
 src/gui/widgets/window.cpp | 28 +++++++++++++++++++++++++++-
 src/gui/widgets/window.h   |  4 ++++
 4 files changed, 69 insertions(+), 1 deletion(-)

diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index c502ce04a..ce2fcef98 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -27,6 +27,7 @@
 #include "gui/sdlfont.h"
 #include "gui/sdlinput.h"
 #include "gui/theme.h"
+#include "gui/viewport.h"
 
 #include "gui/widgets/mouseevent.h"
 #include "gui/widgets/window.h"
@@ -605,3 +606,34 @@ void Gui::resetClickCount()
     mClickCount = 1;
     mLastMousePressTimeStamp = 0;
 }
+
+MouseEvent *Gui::createMouseEvent(Window *widget)
+{
+    if (!viewport || !widget)
+        return nullptr;
+
+    int x = 0;
+    int y = 0;
+    int mouseX = 0;
+    int mouseY = 0;
+
+    getAbsolutePosition(widget, x, y);
+    SDL_GetMouseState(&mouseX, &mouseY);
+
+    MouseEvent *mouseEvent = new MouseEvent(widget, mShiftPressed,
+        mControlPressed, mAltPressed, mMetaPressed, 0, 0,
+        mouseX - x, mouseY - y, mClickCount);
+    return mouseEvent;
+}
+
+void Gui::getAbsolutePosition(gcn::Widget *widget, int &x, int &y)
+{
+    x = 0;
+    y = 0;
+    while (widget->getParent())
+    {
+        x += widget->getX();
+        y += widget->getY();
+        widget = widget->getParent();
+    }
+}
diff --git a/src/gui/gui.h b/src/gui/gui.h
index ee1cb9092..4766a4bf4 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -28,8 +28,10 @@
 class Graphics;
 class GuiConfigListener;
 class ImageSet;
+class MouseEvent;
 class SDLFont;
 class SDLInput;
+class Window;
 
 /**
  * \defgroup GUI Core GUI related classes (widgets)
@@ -129,6 +131,10 @@ class Gui final : public gcn::Gui
 
         void resetClickCount();
 
+        MouseEvent *createMouseEvent(Window *widget);
+
+        void getAbsolutePosition(gcn::Widget *widget, int &x, int &y);
+
         /**
          * Cursors are in graphic order from left to right.
          * CURSOR_POINTER should be left untouched.
diff --git a/src/gui/widgets/window.cpp b/src/gui/widgets/window.cpp
index 19d0b2fea..879190932 100644
--- a/src/gui/widgets/window.cpp
+++ b/src/gui/widgets/window.cpp
@@ -490,14 +490,31 @@ void Window::setVisible(bool visible, bool forceSticky)
 
     // Check if the window is off screen...
     if (visible)
+    {
         ensureOnScreen();
+    }
     else
+    {
         mResizeHandles = 0;
+    }
 
     if (isStickyButtonLock())
         gcn::Window::setVisible(visible);
     else
         gcn::Window::setVisible((!forceSticky && isSticky()) || visible);
+    if (visible)
+    {
+        if (gui)
+        {
+            gcn::MouseEvent *event = reinterpret_cast<gcn::MouseEvent*>(
+                gui->createMouseEvent(this));
+            if (event)
+            {
+                mouseMoved(*event);
+                delete event;
+            }
+        }
+    }
 }
 
 void Window::scheduleDelete()
@@ -560,13 +577,18 @@ void Window::mouseReleased(gcn::MouseEvent &event A_UNUSED)
     mMoved = false;
 }
 
+void Window::mouseEntered(gcn::MouseEvent &event)
+{
+    updateResizeHandler(event);
+}
+
 void Window::mouseExited(gcn::MouseEvent &event A_UNUSED)
 {
     if (mGrip && !mouseResize && gui)
         gui->setCursorType(Gui::CURSOR_POINTER);
 }
 
-void Window::mouseMoved(gcn::MouseEvent &event)
+void Window::updateResizeHandler(gcn::MouseEvent &event)
 {
     if (!gui)
         return;
@@ -595,7 +617,11 @@ void Window::mouseMoved(gcn::MouseEvent &event)
         default:
             gui->setCursorType(Gui::CURSOR_POINTER);
     }
+}
 
+void Window::mouseMoved(gcn::MouseEvent &event)
+{
+    updateResizeHandler(event);
     if (viewport)
         viewport->hideBeingPopup();
 }
diff --git a/src/gui/widgets/window.h b/src/gui/widgets/window.h
index 7ffa1eb2d..c8b8fb080 100644
--- a/src/gui/widgets/window.h
+++ b/src/gui/widgets/window.h
@@ -273,6 +273,10 @@ class Window : public gcn::Window, private gcn::WidgetListener
          */
         void mouseExited(gcn::MouseEvent &event) override;
 
+        void mouseEntered(gcn::MouseEvent &event) override;
+
+        void updateResizeHandler(gcn::MouseEvent &event);
+
         /**
          * Sets the name of the window. This is not the window title.
          */
-- 
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