webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 110 insertions, 0 deletions

diff --git a/Source/WebCore/platform/graphics/x11/XUniqueResource.h b/Source/WebCore/platform/graphics/x11/XUniqueResource.h
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+++ b/Source/WebCore/platform/graphics/x11/XUniqueResource.h
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+/*
+ * Copyright (C) 2015 Igalia S.L
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef XUniqueResource_h
+#define XUniqueResource_h
+
+#if PLATFORM(X11)
+
+#if USE(GLX)
+typedef unsigned long GLXPbuffer;
+typedef unsigned long GLXPixmap;
+#endif
+
+namespace WebCore {
+
+enum class XResource {
+    Colormap,
+#if PLATFORM(GTK)
+    Damage,
+#endif
+    Pixmap,
+    Window,
+#if USE(GLX)
+    GLXPbuffer,
+    GLXPixmap,
+#endif
+};
+
+template <XResource T> class XUniqueResource {
+public:
+    XUniqueResource()
+    {
+    }
+
+    XUniqueResource(unsigned long resource)
+        : m_resource(resource)
+    {
+    }
+
+    XUniqueResource(XUniqueResource&& uniqueResource)
+        : m_resource(uniqueResource.release())
+    {
+    }
+
+    XUniqueResource& operator=(XUniqueResource&& uniqueResource)
+    {
+        reset(uniqueResource.release());
+        return *this;
+    }
+
+    ~XUniqueResource()
+    {
+        reset();
+    }
+
+    unsigned long get() const { return m_resource; }
+    unsigned long release() { return std::exchange(m_resource, 0); }
+
+    void reset(unsigned long resource = 0)
+    {
+        std::swap(m_resource, resource);
+        deleteXResource(resource);
+    }
+
+    explicit operator bool() const { return m_resource; }
+
+private:
+    static void deleteXResource(unsigned long resource);
+
+    unsigned long m_resource { 0 };
+};
+
+using XUniqueColormap = XUniqueResource<XResource::Colormap>;
+#if PLATFORM(GTK)
+using XUniqueDamage = XUniqueResource<XResource::Damage>;
+#endif
+using XUniquePixmap = XUniqueResource<XResource::Pixmap>;
+using XUniqueWindow = XUniqueResource<XResource::Window>;
+#if USE(GLX)
+using XUniqueGLXPbuffer = XUniqueResource<XResource::GLXPbuffer>;
+using XUniqueGLXPixmap = XUniqueResource<XResource::GLXPixmap>;
+#endif
+
+} // namespace WebCore
+
+#endif // PLATFORM(X11)
+
+#endif // XUniqueResource_h