8236651: Simplify and update glass gtk backend

buildSrc/linux.gradle

@@ -84,6 +84,7 @@ if (hasProperty('toolchainDir')) {
 
 def gtk2CCFlags = [ "-Wno-deprecated-declarations" ];
 def gtk3CCFlags = [ "-Wno-deprecated-declarations" ];
+def gtk3expCCFlags = [ "-Wno-deprecated-declarations" ];
 def gtk2LinkFlags = [ ];
 def gtk3LinkFlags = [ ];
 
@@ -138,6 +139,7 @@ setupTools("linux_gtk3",
         def libsGTK3 = properties.getProperty("libsGTK3")
         if (cflagsGTK3 && libsGTK3) {
             gtk3CCFlags.addAll(cflagsGTK3.split(" "))
+            gtk3expCCFlags.addAll(cflagsGTK3.split(" "))
             gtk3LinkFlags.addAll(libsGTK3.split(" "))
         } else {
             throw new IllegalStateException("GTK3 development packages not found. If GTK3 packages are installed, please remove the build directory and try again.")
@@ -212,7 +214,7 @@ def compiler = IS_COMPILE_PARFAIT ? "parfait-gcc" : "${toolchainDir}gcc";
 def linker = IS_STATIC_BUILD ? "ar" : IS_COMPILE_PARFAIT ? "parfait-g++" : "${toolchainDir}g++";
 
 LINUX.glass = [:]
-LINUX.glass.variants = ["glass", "glassgtk2", "glassgtk3"]
+LINUX.glass.variants = ["glass", "glassgtk2", "glassgtk3", "glassgtk2_exp", "glassgtk3_exp"]
 
 FileTree ft_gtk_launcher = fileTree("${project(":graphics").projectDir}/src/main/native-glass/gtk/") {
     include("**/launcher.c")
@@ -222,6 +224,11 @@ FileTree ft_gtk = fileTree("${project(":graphics").projectDir}/src/main/native-g
     exclude("**/launcher.c")
 }
 
+FileTree ft_gtkexp = fileTree("${project(":graphics").projectDir}/src/main/native-glass/gtk_experimental/") {
+    exclude("**/launcher.c")
+}
+
+
 LINUX.glass.glass = [:]
 LINUX.glass.glass.nativeSource = ft_gtk_launcher.getFiles()
 LINUX.glass.glass.compiler = compiler
@@ -250,6 +257,26 @@ LINUX.glass.glassgtk3.linker = linker
 LINUX.glass.glassgtk3.linkFlags = IS_STATIC_BUILD ? linkFlags : [linkFlags, gtk3LinkFlags].flatten()
 LINUX.glass.glassgtk3.lib = "glassgtk3"
 
+LINUX.glass.glassgtk2_exp = [:]
+LINUX.glass.glassgtk2_exp.nativeSource =  ft_gtkexp.getFiles()
+LINUX.glass.glassgtk2_exp.compiler = compiler
+LINUX.glass.glassgtk2_exp.ccFlags = IS_STATIC_BUILD ?
+        ["-fno-threadsafe-statics", ccFlags, gtk2CCFlags].flatten() :
+        [cppFlags, gtk2CCFlags, "-Werror"].flatten()
+LINUX.glass.glassgtk2_exp.linker = linker
+LINUX.glass.glassgtk2_exp.linkFlags = IS_STATIC_BUILD ? linkFlags : [linkFlags, gtk2LinkFlags].flatten()
+LINUX.glass.glassgtk2_exp.lib = "glassgtk2_exp"
+
+LINUX.glass.glassgtk3_exp = [:]
+LINUX.glass.glassgtk3_exp.nativeSource =  ft_gtkexp.getFiles()
+LINUX.glass.glassgtk3_exp.compiler = compiler
+LINUX.glass.glassgtk3_exp.ccFlags = IS_STATIC_BUILD ?
+        ["-fno-threadsafe-statics", ccFlags, gtk3expCCFlags].flatten() :
+        [cppFlags, gtk3expCCFlags, "-Werror"].flatten()
+LINUX.glass.glassgtk3_exp.linker = linker
+LINUX.glass.glassgtk3_exp.linkFlags = IS_STATIC_BUILD ? linkFlags : [linkFlags, gtk3LinkFlags].flatten()
+LINUX.glass.glassgtk3_exp.lib = "glassgtk3_exp"
+
 LINUX.decora = [:]
 LINUX.decora.compiler = compiler
 LINUX.decora.ccFlags = [cppFlags, "-ffast-math"].flatten()

modules/javafx.graphics/src/main/java/com/sun/glass/ui/gtk/GtkApplication.java

@@ -155,6 +155,10 @@ private static float getFloat(String propname, float defval, String description)
                 }
                 return ret;
             }) : forcedGtkVersion;
+
+        boolean gtkExperimental = AccessController.doPrivileged((PrivilegedAction<Boolean>) () ->
+                Boolean.getBoolean("javafx.gtk.experimental"));
+
         boolean gtkVersionVerbose =
                 AccessController.doPrivileged((PrivilegedAction<Boolean>) () -> {
             return Boolean.getBoolean("jdk.gtk.verbose");
@@ -176,15 +180,19 @@ private static float getFloat(String propname, float defval, String description)
                     System.out.println("Glass GTK library to load is already loaded");
                 }
             } else if (libraryToLoad == QUERY_LOAD_GTK2) {
+                String libName = (gtkExperimental) ? "glassgtk2_exp" : "glassgtk2";
                 if (gtkVersionVerbose) {
-                    System.out.println("Glass GTK library to load is glassgtk2");
+                    System.out.println(String.format("Glass GTK library to load is %s", libName));
                 }
-                NativeLibLoader.loadLibrary("glassgtk2");
+
+                NativeLibLoader.loadLibrary(libName);
             } else if (libraryToLoad == QUERY_LOAD_GTK3) {
+                String libName = (gtkExperimental) ? "glassgtk3_exp" : "glassgtk3";
                 if (gtkVersionVerbose) {
-                    System.out.println("Glass GTK library to load is glassgtk3");
+                    System.out.println(String.format("Glass GTK library to load is %s", libName));
                 }
-                NativeLibLoader.loadLibrary("glassgtk3");
+
+                NativeLibLoader.loadLibrary(libName);
             } else {
                 throw new UnsupportedOperationException("Internal Error");
             }

modules/javafx.graphics/src/main/java/com/sun/glass/ui/gtk/GtkWindow.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2020, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -32,6 +32,7 @@
 import com.sun.glass.ui.Window;
 
 class GtkWindow extends Window {
+    private static boolean USE_EXPERIMENTAL_GTK_IMPL = Boolean.getBoolean("javafx.gtk.experimental");
 
     public GtkWindow(Window owner, Screen screen, int styleMask) {
         super(owner, screen, styleMask);
@@ -201,16 +202,18 @@ protected void _setBounds(long ptr, int x, int y, boolean xSet, boolean ySet, in
         _setGravity(ptr, xGravity, yGravity);
         setBoundsImpl(ptr, x, y, xSet, ySet, w, h, cw, ch);
 
-        if ((w <= 0) && (cw > 0) || (h <= 0) && (ch > 0)) {
-            final int[] extarr = new int[4];
-            getFrameExtents(ptr, extarr);
-
-            // TODO: ((w <= 0) && (cw <= 0)) || ((h <= 0) && (ch <= 0))
-            notifyResize(WindowEvent.RESIZE,
-                         ((w <= 0) && (cw > 0)) ? cw + extarr[0] + extarr[1]
-                                                : w,
-                         ((h <= 0) && (ch > 0)) ? ch + extarr[2] + extarr[3]
-                                                : h);
+        if (!USE_EXPERIMENTAL_GTK_IMPL) {
+            if ((w <= 0) && (cw > 0) || (h <= 0) && (ch > 0)) {
+                final int[] extarr = new int[4];
+                getFrameExtents(ptr, extarr);
+
+                // TODO: ((w <= 0) && (cw <= 0)) || ((h <= 0) && (ch <= 0))
+                notifyResize(WindowEvent.RESIZE,
+                        ((w <= 0) && (cw > 0)) ? cw + extarr[0] + extarr[1]
+                                : w,
+                        ((h <= 0) && (ch > 0)) ? ch + extarr[2] + extarr[3]
+                                : h);
+            }
         }
     }