From e867d1dbb4a083a9bba0199b951dc88931eb83f3 Mon Sep 17 00:00:00 2001
From: attila <attila@juce.com>
Date: Fri, 2 Jul 2021 20:11:22 +0200
Subject: [PATCH] Linux:  Fix maximise when not using native titlebar

X11 cannot maximise windows that have their maximum size set. When not
using the native titlebar we now revert to setting the window bounds
without involving the X11 maximise function.
---
 modules/juce_gui_basics/native/juce_linux_Windowing.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/modules/juce_gui_basics/native/juce_linux_Windowing.cpp b/modules/juce_gui_basics/native/juce_linux_Windowing.cpp
index ff742641b8..726c38eff8 100644
--- a/modules/juce_gui_basics/native/juce_linux_Windowing.cpp
+++ b/modules/juce_gui_basics/native/juce_linux_Windowing.cpp
@@ -185,10 +185,14 @@ public:
 
         if (fullScreen != shouldBeFullScreen)
         {
-            XWindowSystem::getInstance()->setMaximised (windowH, shouldBeFullScreen);
+            const auto usingNativeTitleBar = ((styleFlags & windowHasTitleBar) != 0);
+
+            if (usingNativeTitleBar)
+                XWindowSystem::getInstance()->setMaximised (windowH, shouldBeFullScreen);
 
             if (shouldBeFullScreen)
-                r = XWindowSystem::getInstance()->getWindowBounds (windowH, parentWindow);
+                r = usingNativeTitleBar ? XWindowSystem::getInstance()->getWindowBounds (windowH, parentWindow)
+                                        : Desktop::getInstance().getDisplays().getDisplayForRect (bounds)->userArea;
 
             if (! r.isEmpty())
                 setBounds (ScalingHelpers::scaledScreenPosToUnscaled (component, r), shouldBeFullScreen);