LibGfx: Rename from LibDraw :^)

Libraries/LibGfx/Emoji.cpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@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.
+ */
+
+#include <AK/HashMap.h>
+#include <AK/String.h>
+#include <LibGfx/Emoji.h>
+#include <LibGfx/GraphicsBitmap.h>
+
+namespace Gfx {
+
+static HashMap<u32, RefPtr<Gfx::Bitmap>> s_emojis;
+
+const Bitmap* Emoji::emoji_for_codepoint(u32 codepoint)
+{
+    auto it = s_emojis.find(codepoint);
+    if (it != s_emojis.end())
+        return (*it).value.ptr();
+
+    String path = String::format("/res/emoji/U+%X.png", codepoint);
+
+    auto bitmap = Bitmap::load_from_file(path);
+    if (!bitmap) {
+        s_emojis.set(codepoint, nullptr);
+        return nullptr;
+    }
+
+    s_emojis.set(codepoint, bitmap);
+    return bitmap.ptr();
+}
+
+}