From 91f72a1ada74edd289070ac41beaa447b7062978 Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Sat, 9 Feb 2019 19:59:06 -0500
Subject: [PATCH] Add Reposition and Resize events.

---
 include/event.hpp         | 12 ++++++++++++
 include/widget/Widget.hpp |  5 +++++
 src/app/ModuleBrowser.cpp |  4 +++-
 src/widget/Widget.cpp     | 12 ++++++++++++
 4 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/event.hpp b/include/event.hpp
index c126073e..e518f4e6 100644
--- a/include/event.hpp
+++ b/include/event.hpp
@@ -241,6 +241,18 @@ struct Zoom : Event {
 };
 
 
+/** Occurs when Widget::setPos() is called.
+*/
+struct Reposition : Event {
+};
+
+
+/** Occurs when Widget::setSize() is called.
+*/
+struct Resize : Event {
+};
+
+
 struct State {
 	widget::Widget *rootWidget = NULL;
 	/** State widgets
diff --git a/include/widget/Widget.hpp b/include/widget/Widget.hpp
index 91bac5de..33fa10e5 100644
--- a/include/widget/Widget.hpp
+++ b/include/widget/Widget.hpp
@@ -32,6 +32,9 @@ struct Widget {
 
 	virtual ~Widget();
 
+	void setPos(math::Vec pos);
+	void setSize(math::Vec size);
+
 	virtual math::Rect getChildrenBoundingBox();
 	/**  Returns `v` transformed into the coordinate system of `relative` */
 	virtual math::Vec getRelativeOffset(math::Vec v, Widget *relative);
@@ -143,6 +146,8 @@ struct Widget {
 	virtual void onAction(const event::Action &e) {}
 	virtual void onChange(const event::Change &e) {}
 	virtual void onZoom(const event::Zoom &e) {recurseEvent(&Widget::onZoom, e);}
+	virtual void onReposition(const event::Reposition &e) {}
+	virtual void onResize(const event::Resize &e) {}
 };
 
 
diff --git a/src/app/ModuleBrowser.cpp b/src/app/ModuleBrowser.cpp
index ccc782b8..d8122f6f 100644
--- a/src/app/ModuleBrowser.cpp
+++ b/src/app/ModuleBrowser.cpp
@@ -27,7 +27,9 @@ static std::set<plugin::Model*> sFavoriteModels;
 struct BrowserOverlay : widget::OpaqueWidget {
 	void step() override {
 		box = parent->box.zeroPos();
-		widget::OpaqueWidget::step();
+		// Only step if visible, since there are potentially thousands of descendants that don't need to be stepped.
+		if (visible)
+			widget::OpaqueWidget::step();
 	}
 
 	void onButton(const event::Button &e) override {
diff --git a/src/widget/Widget.cpp b/src/widget/Widget.cpp
index da565ca3..1a75df8b 100644
--- a/src/widget/Widget.cpp
+++ b/src/widget/Widget.cpp
@@ -14,6 +14,18 @@ Widget::~Widget() {
 	clearChildren();
 }
 
+void Widget::setPos(math::Vec pos) {
+	box.pos = pos;
+	event::Reposition eReposition;
+	onReposition(eReposition);
+}
+
+void Widget::setSize(math::Vec size) {
+	box.size = size;
+	event::Resize eResize;
+	onResize(eResize);
+}
+
 math::Rect Widget::getChildrenBoundingBox() {
 	math::Vec min = math::Vec(INFINITY, INFINITY);
 	math::Vec max = math::Vec(-INFINITY, -INFINITY);