Move rescaled images load function from resourcemanager into separate file.

1 files changed, 77 insertions, 0 deletions

diff --git a/src/resources/loaders/rescaledloader.cpp b/src/resources/loaders/rescaledloader.cpp
new file mode 100644
index 000000000..95ef6dff7
--- /dev/null
+++ b/src/resources/loaders/rescaledloader.cpp
@@ -0,0 +1,77 @@
+/*
+ *  The ManaPlus Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *  Copyright (C) 2011-2016  The ManaPlus Developers
+ *
+ *  This file is part of The ManaPlus Client.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "logger.h"
+
+#include "resources/image.h"
+
+#include "resources/loaders/rescaledloader.h"
+
+#include "resources/resourcemanager/resourcemanager.h"
+
+#include "utils/checkutils.h"
+#include "utils/stringutils.h"
+
+#include "debug.h"
+
+namespace
+{
+    struct RescaledLoader final
+    {
+        const Image *image;
+        int width;
+        int height;
+        static Resource *load(const void *const v)
+        {
+            if (!v)
+                return nullptr;
+            const RescaledLoader *const rl
+                = static_cast<const RescaledLoader *const>(v);
+            if (!rl->image)
+                return nullptr;
+            Image *const rescaled = rl->image->SDLgetScaledImage(
+                rl->width, rl->height);
+            if (!rescaled)
+            {
+                reportAlways("Rescale image failed: %s",
+                    rl->image->getIdPath().c_str());
+                return nullptr;
+            }
+            return rescaled;
+        }
+    };
+}  // namespace
+
+Image *Loader::getRescaled(const Image *const image,
+                           const int width,
+                           const int height)
+{
+    if (!image)
+        return nullptr;
+
+    const std::string idPath = image->getIdPath() + strprintf(
+        "_rescaled%dx%d", width, height);
+    const RescaledLoader rl = { image, width, height };
+    Image *const img = static_cast<Image *const>(
+        resourceManager->get(idPath, RescaledLoader::load, &rl));
+    return img;
+}