--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DPF-Prymula-audioplugins/dpf/dgl/src/WidgetPrivateData.cpp	Mon Oct 16 21:53:34 2023 +0200
@@ -0,0 +1,232 @@
+/*
+ * DISTRHO Plugin Framework (DPF)
+ * Copyright (C) 2012-2022 Filipe Coelho <falktx@falktx.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any purpose with
+ * or without fee is hereby granted, provided that the above copyright notice and this
+ * permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
+ * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "WidgetPrivateData.hpp"
+#include "SubWidgetPrivateData.hpp"
+#include "../TopLevelWidget.hpp"
+
+START_NAMESPACE_DGL
+
+#define FOR_EACH_SUBWIDGET(it) \
+  for (std::list<SubWidget*>::iterator it = subWidgets.begin(); it != subWidgets.end(); ++it)
+
+#define FOR_EACH_SUBWIDGET_INV(rit) \
+  for (std::list<SubWidget*>::reverse_iterator rit = subWidgets.rbegin(); rit != subWidgets.rend(); ++rit)
+
+// -----------------------------------------------------------------------
+
+Widget::PrivateData::PrivateData(Widget* const s, TopLevelWidget* const tlw)
+    : self(s),
+      topLevelWidget(tlw),
+      parentWidget(nullptr),
+      id(0),
+      name(nullptr),
+      needsScaling(false),
+      visible(true),
+      size(0, 0),
+      subWidgets() {}
+
+Widget::PrivateData::PrivateData(Widget* const s, Widget* const pw)
+    : self(s),
+      topLevelWidget(findTopLevelWidget(pw)),
+      parentWidget(pw),
+      id(0),
+      name(nullptr),
+      needsScaling(false),
+      visible(true),
+      size(0, 0),
+      subWidgets() {}
+
+Widget::PrivateData::~PrivateData()
+{
+    subWidgets.clear();
+    std::free(name);
+}
+
+void Widget::PrivateData::displaySubWidgets(const uint width, const uint height, const double autoScaleFactor)
+{
+    if (subWidgets.size() == 0)
+        return;
+
+    for (std::list<SubWidget*>::iterator it = subWidgets.begin(); it != subWidgets.end(); ++it)
+    {
+        SubWidget* const subwidget(*it);
+
+        if (subwidget->isVisible())
+            subwidget->pData->display(width, height, autoScaleFactor);
+    }
+}
+
+// -----------------------------------------------------------------------
+
+bool Widget::PrivateData::giveKeyboardEventForSubWidgets(const KeyboardEvent& ev)
+{
+    if (! visible)
+        return false;
+    if (subWidgets.size() == 0)
+        return false;
+
+    FOR_EACH_SUBWIDGET_INV(rit)
+    {
+        SubWidget* const widget(*rit);
+
+        if (widget->isVisible() && widget->onKeyboard(ev))
+            return true;
+    }
+
+    return false;
+}
+
+bool Widget::PrivateData::giveCharacterInputEventForSubWidgets(const CharacterInputEvent& ev)
+{
+    if (! visible)
+        return false;
+    if (subWidgets.size() == 0)
+        return false;
+
+    FOR_EACH_SUBWIDGET_INV(rit)
+    {
+        SubWidget* const widget(*rit);
+
+        if (widget->isVisible() && widget->onCharacterInput(ev))
+            return true;
+    }
+
+    return false;
+}
+
+bool Widget::PrivateData::giveMouseEventForSubWidgets(MouseEvent& ev)
+{
+    if (! visible)
+        return false;
+    if (subWidgets.size() == 0)
+        return false;
+
+    const double x = ev.absolutePos.getX();
+    const double y = ev.absolutePos.getY();
+
+    if (SubWidget* const selfw = dynamic_cast<SubWidget*>(self))
+    {
+        if (selfw->pData->needsViewportScaling)
+        {
+            ev.absolutePos.setX(x - selfw->getAbsoluteX() + selfw->getMargin().getX());
+            ev.absolutePos.setY(y - selfw->getAbsoluteY() + selfw->getMargin().getY());
+        }
+    }
+
+    FOR_EACH_SUBWIDGET_INV(rit)
+    {
+        SubWidget* const widget(*rit);
+
+        if (! widget->isVisible())
+            continue;
+
+        ev.pos = Point<double>(x - widget->getAbsoluteX() + widget->getMargin().getX(),
+                               y - widget->getAbsoluteY() + widget->getMargin().getY());
+
+        if (widget->onMouse(ev))
+            return true;
+    }
+
+    return false;
+}
+
+bool Widget::PrivateData::giveMotionEventForSubWidgets(MotionEvent& ev)
+{
+    if (! visible)
+        return false;
+    if (subWidgets.size() == 0)
+        return false;
+
+    const double x = ev.absolutePos.getX();
+    const double y = ev.absolutePos.getY();
+
+    if (SubWidget* const selfw = dynamic_cast<SubWidget*>(self))
+    {
+        if (selfw->pData->needsViewportScaling)
+        {
+            ev.absolutePos.setX(x - selfw->getAbsoluteX() + selfw->getMargin().getX());
+            ev.absolutePos.setY(y - selfw->getAbsoluteY() + selfw->getMargin().getY());
+        }
+    }
+
+    FOR_EACH_SUBWIDGET_INV(rit)
+    {
+        SubWidget* const widget(*rit);
+
+        if (! widget->isVisible())
+            continue;
+
+        ev.pos = Point<double>(x - widget->getAbsoluteX() + widget->getMargin().getX(),
+                               y - widget->getAbsoluteY() + widget->getMargin().getY());
+
+        if (widget->onMotion(ev))
+            return true;
+    }
+
+    return false;
+}
+
+bool Widget::PrivateData::giveScrollEventForSubWidgets(ScrollEvent& ev)
+{
+    if (! visible)
+        return false;
+    if (subWidgets.size() == 0)
+        return false;
+
+    const double x = ev.absolutePos.getX();
+    const double y = ev.absolutePos.getY();
+
+    if (SubWidget* const selfw = dynamic_cast<SubWidget*>(self))
+    {
+        if (selfw->pData->needsViewportScaling)
+        {
+            ev.absolutePos.setX(x - selfw->getAbsoluteX() + selfw->getMargin().getX());
+            ev.absolutePos.setY(y - selfw->getAbsoluteY() + selfw->getMargin().getY());
+        }
+    }
+
+    FOR_EACH_SUBWIDGET_INV(rit)
+    {
+        SubWidget* const widget(*rit);
+
+        if (! widget->isVisible())
+            continue;
+
+        ev.pos = Point<double>(x - widget->getAbsoluteX() + widget->getMargin().getX(),
+                               y - widget->getAbsoluteY() + widget->getMargin().getY());
+
+        if (widget->onScroll(ev))
+            return true;
+    }
+
+    return false;
+}
+
+// -----------------------------------------------------------------------
+
+TopLevelWidget* Widget::PrivateData::findTopLevelWidget(Widget* const pw)
+{
+    if (pw->pData->topLevelWidget != nullptr)
+        return pw->pData->topLevelWidget;
+    if (pw->pData->parentWidget != nullptr)
+        return findTopLevelWidget(pw->pData->parentWidget);
+    return nullptr;
+}
+
+// -----------------------------------------------------------------------
+
+END_NAMESPACE_DGL