Windows: Update titlebar icons used on Windows 11

To maximize and restore icons look differently on Windows 11.
We update our versions accordingly when Windows 11 is detected.

windows/src/main/java/com/github/weisj/darklaf/platform/windows/WindowsDecorationsProvider.java

@@ -23,6 +23,7 @@ package com.github.weisj.darklaf.platform.windows;
 
 import java.awt.*;
 import java.util.Properties;
+import java.util.function.Consumer;
 
 import javax.swing.*;
 import javax.swing.border.Border;
@@ -101,11 +102,13 @@ public class WindowsDecorationsProvider implements DecorationsProvider {
     @Override
     public void loadDecorationProperties(final Properties properties, final UIDefaults currentDefaults) {
         IconLoader iconLoader = IconLoader.get(WindowsDecorationsProvider.class);
-        PropertyLoader.putProperties(
-                PropertyLoader.loadProperties(WindowsDecorationsProvider.class, "windows_decorations", ""), properties,
-                currentDefaults, iconLoader);
-        PropertyLoader.putProperties(
-                PropertyLoader.loadProperties(WindowsDecorationsProvider.class, "windows_icons", ""), properties,
-                currentDefaults, iconLoader);
+        Consumer<String> loadProps = fileName -> PropertyLoader.putProperties(
+                PropertyLoader.loadProperties(WindowsDecorationsProvider.class, fileName, ""),
+                properties, currentDefaults, iconLoader);
+        loadProps.accept("windows_icons");
+        loadProps.accept("windows_decorations");
+        if (SystemInfo.isWindows11OrGreater) {
+            loadProps.accept("windows_11_decorations");
+        }
     }
 }

windows/src/main/resources/com/github/weisj/darklaf/platform/windows/icons/window/maximize11.svg

@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+    <defs id="colors">
+        <linearGradient id="Windows.Icons.windowMaximizeInactive.color">
+            <stop offset="0" stop-color="#8C8C8C"/>
+            <stop offset="1" stop-color="#8C8C8C"/>
+        </linearGradient>
+    </defs>
+    <path fill="url(#Windows.Icons.windowMaximizeInactive.color)" fill-rule="evenodd"
+          d="M3,5 q0,-2 2,-2 L11,3 q2,0 2,2 L13,11 q0,2 -2,2 L5,13 q-2,0 -2,-2 L3,3 Z
+             M5,4 q-1,0 -1,1 L4,11 q0,1 1,1 L11,12 q1,0 1,-1 L12,5 q0,-1 -1,-1 L4,4 Z"/>
+</svg>

windows/src/main/resources/com/github/weisj/darklaf/platform/windows/icons/window/maximize11Inactive.svg

@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
+    <defs id="colors">
+        <linearGradient id="Windows.Icons.windowMaximize.color">
+            <stop offset="0" stop-color="#A9A9A9"/>
+            <stop offset="1" stop-color="#A9A9A9"/>
+        </linearGradient>
+    </defs>
+    <path fill="url(#Windows.Icons.windowMaximize.color)" fill-rule="evenodd"
+          d="M3,5 q0,-2 2,-2 L11,3 q2,0 2,2 L13,11 q0,2 -2,2 L5,13 q-2,0 -2,-2 L3,3 Z
+             M5,4 q-1,0 -1,1 L4,11 q0,1 1,1 L11,12 q1,0 1,-1 L12,5 q0,-1 -1,-1 L4,4 Z"/>
+</svg>

windows/src/main/resources/com/github/weisj/darklaf/platform/windows/icons/window/restore11.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16px" height="16px" viewBox="0 0 16 16">
+    <defs id="colors">
+        <linearGradient id="Windows.Icons.windowRestore.color">
+            <stop offset="0" stop-color="#A9A9A9"/>
+            <stop offset="1" stop-color="#A9A9A9"/>
+        </linearGradient>
+    </defs>
+    <path fill="url(#Windows.Icons.windowRestore.color)"
+          transform="translate(0.5,-0.5)"
+          d="M3,7c0-1.3,0.7-2,2-2h4c1.3,0,2,0.7,2,2v4c0,1.3-0.7,2-2,2H5c-1.3,0-2-0.7-2-2V5V7z
+             M5,6C4.3,6,4,6.3,4,7v4 c0,0.7,0.3,1,1,1h4c0.7,0,1-0.3,1-1V7c0-0.7-0.3-1-1-1H4H5z"/>
+    <path fill="url(#Windows.Icons.windowRestore.color)"
+          d="M11,3H7C6.1,3,5.5,3.3,5.2,4H7h4c0.7,0,1,0.3,1,1v2.5V9v1.8c0.7-0.3,1-0.9,1-1.8V5C13,3.7,12.3,3,11,3z"/>
+</svg>

windows/src/main/resources/com/github/weisj/darklaf/platform/windows/icons/window/restore11Inactive.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="16px" height="16px" viewBox="0 0 16 16">
+    <defs id="colors">
+        <linearGradient id="Windows.Icons.windowRestoreInactive.color">
+            <stop offset="0" stop-color="#8C8C8C"/>
+            <stop offset="1" stop-color="#8C8C8C"/>
+        </linearGradient>
+    </defs>
+    <path fill="url(#Windows.Icons.windowRestoreInactive.color)"
+          transform="translate(0.5,-0.5)"
+          d="M3,7c0-1.3,0.7-2,2-2h4c1.3,0,2,0.7,2,2v4c0,1.3-0.7,2-2,2H5c-1.3,0-2-0.7-2-2V5V7z
+             M5,6C4.3,6,4,6.3,4,7v4 c0,0.7,0.3,1,1,1h4c0.7,0,1-0.3,1-1V7c0-0.7-0.3-1-1-1H4H5z"/>
+    <path fill="url(#Windows.Icons.windowRestoreInactive.color)"
+          d="M11,3H7C6.1,3,5.5,3.3,5.2,4H7h4c0.7,0,1,0.3,1,1v2.5V9v1.8c0.7-0.3,1-0.9,1-1.8V5C13,3.7,12.3,3,11,3z"/>
+</svg>

windows/src/main/resources/com/github/weisj/darklaf/platform/windows/windows_11_decorations.properties

@@ -0,0 +1,30 @@
+#
+# MIT License
+#
+# Copyright (c) 2021 Jannis Weis
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+#
+# suppress inspection "UnusedProperty" for whole file
+#
+Windows.TitlePane.maximize.icon                        = icons/window/maximize11.svg[themed]
+Windows.TitlePane.maximizeInactive.icon                = icons/window/maximize11Inactive.svg[themed]
+Windows.TitlePane.restore.icon                         = icons/window/restore11.svg[themed]
+Windows.TitlePane.restoreInactive.icon                 = icons/window/restore11Inactive.svg[themed]