LibGfx: Rename from LibDraw :^)

Libraries/LibGfx/ImageDecoder.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER OR 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.
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtr.h>
+#include <AK/OwnPtr.h>
+#include <AK/RefCounted.h>
+#include <LibGfx/Size.h>
+
+namespace Gfx {
+
+class Bitmap;
+
+class ImageDecoderPlugin {
+public:
+    virtual ~ImageDecoderPlugin() {}
+
+    virtual Size size() = 0;
+    virtual RefPtr<Gfx::Bitmap> bitmap() = 0;
+
+    virtual void set_volatile() = 0;
+    [[nodiscard]] virtual bool set_nonvolatile() = 0;
+
+protected:
+    ImageDecoderPlugin() {}
+};
+
+class ImageDecoder : public RefCounted<ImageDecoder> {
+public:
+    static NonnullRefPtr<ImageDecoder> create(const u8* data, size_t size) { return adopt(*new ImageDecoder(data, size)); }
+    ~ImageDecoder();
+
+    Size size() const { return m_plugin->size(); }
+    int width() const { return size().width(); }
+    int height() const { return size().height(); }
+    RefPtr<Gfx::Bitmap> bitmap() const { return m_plugin->bitmap(); }
+    void set_volatile() { m_plugin->set_volatile(); }
+    [[nodiscard]] bool set_nonvolatile() { return m_plugin->set_nonvolatile(); }
+
+private:
+    ImageDecoder(const u8*, size_t);
+
+    mutable OwnPtr<ImageDecoderPlugin> m_plugin;
+};
+
+}