From a5b737314d931ab0a06535d799fd452939c2e270 Mon Sep 17 00:00:00 2001
From: Ryan Huffman <ryanhuffman@gmail.com>
Date: Wed, 18 Feb 2015 11:44:15 -0800
Subject: [PATCH] Add auto-scale to preferences dialog

---
 interface/src/ui/PreferencesDialog.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/interface/src/ui/PreferencesDialog.cpp b/interface/src/ui/PreferencesDialog.cpp
index e27875ce67..caab326f90 100644
--- a/interface/src/ui/PreferencesDialog.cpp
+++ b/interface/src/ui/PreferencesDialog.cpp
@@ -10,6 +10,7 @@
 //
 
 #include <QFileDialog>
+#include <QFont>
 
 #include <AudioClient.h>
 #include <avatar/AvatarManager.h>
@@ -26,6 +27,18 @@
 
 const int PREFERENCES_HEIGHT_PADDING = 20;
 
+void scaleWidgetFontSizes(QWidget* widget, float scale) {
+    for (auto child : widget->findChildren<QWidget*>()) {
+        if (child->parent() == widget) {
+            scaleWidgetFontSizes(child, scale);
+        }
+    }
+    QFont font = widget->font();
+    qDebug() << "Pref: " << widget->objectName() << ": " << font.pointSizeF();
+    font.setPointSizeF(font.pointSizeF() * scale);
+    widget->setFont(font);
+}
+
 PreferencesDialog::PreferencesDialog(QWidget* parent) :
     QDialog(parent) {
         
@@ -46,8 +59,14 @@ PreferencesDialog::PreferencesDialog(QWidget* parent) :
     // move dialog to left side
     move(parentWidget()->geometry().topLeft());
     setFixedHeight(parentWidget()->size().height() - PREFERENCES_HEIGHT_PADDING);
+
+    auto glCanvas = DependencyManager::get<GLCanvas>();
+    float dpiScale = 72.0f / glCanvas->logicalDpiX();
+
+    scaleWidgetFontSizes(ui.scrollArea, dpiScale);
 }
 
+
 void PreferencesDialog::accept() {
     savePreferences();
     close();