git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_gui_basics/mouse/juce_ComponentDragger.cpp

@@ -0,0 +1,67 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
+   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
+
+   End User License Agreement: www.juce.com/juce-6-licence
+   Privacy Policy: www.juce.com/juce-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+ComponentDragger::ComponentDragger() {}
+ComponentDragger::~ComponentDragger() {}
+
+//==============================================================================
+void ComponentDragger::startDraggingComponent (Component* const componentToDrag, const MouseEvent& e)
+{
+    jassert (componentToDrag != nullptr);
+    jassert (e.mods.isAnyMouseButtonDown()); // The event has to be a drag event!
+
+    if (componentToDrag != nullptr)
+        mouseDownWithinTarget = e.getEventRelativeTo (componentToDrag).getMouseDownPosition();
+}
+
+void ComponentDragger::dragComponent (Component* const componentToDrag, const MouseEvent& e,
+                                      ComponentBoundsConstrainer* const constrainer)
+{
+    jassert (componentToDrag != nullptr);
+    jassert (e.mods.isAnyMouseButtonDown()); // The event has to be a drag event!
+
+    if (componentToDrag != nullptr)
+    {
+        auto bounds = componentToDrag->getBounds();
+
+        // If the component is a window, multiple mouse events can get queued while it's in the same position,
+        // so their coordinates become wrong after the first one moves the window, so in that case, we'll use
+        // the current mouse position instead of the one that the event contains...
+        if (componentToDrag->isOnDesktop())
+            bounds += componentToDrag->getLocalPoint (nullptr, e.source.getScreenPosition()).roundToInt() - mouseDownWithinTarget;
+        else
+            bounds += e.getEventRelativeTo (componentToDrag).getPosition() - mouseDownWithinTarget;
+
+        if (constrainer != nullptr)
+            constrainer->setBoundsForComponent (componentToDrag, bounds, false, false, false, false);
+        else
+            componentToDrag->setBounds (bounds);
+    }
+}
+
+} // namespace juce