Reformat and (slightly) decruft all the things.

gui/Platform_X11.cpp

@@ -0,0 +1,62 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Authors: Orochimarufan <orochimarufan.x3@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *	 http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gui/Platform.h>
+#include <QtX11Extras/QX11Info>
+#include <xcb/xcb.h>
+
+static QByteArray WM_CLASS = "MultiMC5\0MultiMC5";
+
+template <typename... ArgTypes, typename... ArgTypes2>
+static inline unsigned int XcbCallVoid(xcb_void_cookie_t (*func)(xcb_connection_t *, ArgTypes...), ArgTypes2... args...)
+{
+    return func(QX11Info::connection(), args...).sequence;
+}
+
+static void getAtoms(size_t n, xcb_atom_t *atoms, const char *const names[], bool create)
+{
+    xcb_connection_t *conn = QX11Info::connection();
+    xcb_intern_atom_cookie_t *cookies = (xcb_intern_atom_cookie_t *)malloc(sizeof(xcb_intern_atom_cookie_t) * 2);
+    for (size_t i = 0; i < n; ++i)
+        cookies[i] = xcb_intern_atom(conn, create, strlen(names[i]), names[i]);
+    memset(atoms, 0, sizeof(xcb_atom_t) * n);
+    for (size_t i = 0; i < n; ++i)
+    {
+        xcb_intern_atom_reply_t *r = xcb_intern_atom_reply(conn, cookies[i], 0);
+        if (r)
+        {
+            atoms[i] = r->atom;
+            free(r);
+        }
+    }
+    free(cookies);
+}
+
+static inline xcb_atom_t getAtom(const char *name, bool create=false)
+{
+    xcb_atom_t atom;
+    getAtoms(1, &atom, &name, create);
+    return atom;
+}
+
+void MultiMCPlatform::fixWM_CLASS(QWidget *widget)
+{
+    static const xcb_atom_t atom = getAtom("WM_CLASS");
+    XcbCallVoid(xcb_change_property, XCB_PROP_MODE_REPLACE,
+                widget->winId(), atom, XCB_ATOM_STRING, 8, WM_CLASS.count(),
+                WM_CLASS.constData());
+}