Move sub images load function from resourcemanager into separate file.

1 files changed, 89 insertions, 0 deletions

diff --git a/src/resources/loaders/subimageloader.cpp b/src/resources/loaders/subimageloader.cpp
new file mode 100644
index 000000000..9d61a305d
--- /dev/null
+++ b/src/resources/loaders/subimageloader.cpp
@@ -0,0 +1,89 @@
+/*
+ *  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/subimageloader.h"
+
+#include "resources/resourcemanager/resourcemanager.h"
+
+#include "utils/checkutils.h"
+#include "utils/physfsrwops.h"
+#include "utils/stringutils.h"
+
+#include "debug.h"
+
+namespace
+{
+    struct SubImageLoader final
+    {
+        Image *parent;
+        int x, y;
+        int width, height;
+        static Resource *load(const void *const v)
+        {
+            if (!v)
+                return nullptr;
+
+            const SubImageLoader *const
+                rl = static_cast<const SubImageLoader *const>(v);
+            if (!rl->parent)
+                return nullptr;
+
+            Image *const res = rl->parent->getSubImage(rl->x, rl->y,
+                rl->width, rl->height);
+            if (!res)
+            {
+                reportAlways("SubImage loading error: %s",
+                    rl->parent->getSource().c_str());
+            }
+            return res;
+        }
+    };
+}  // namespace
+
+Image *Loader::getSubImage(Image *const parent,
+                           const int x,
+                           const int y,
+                           const int width,
+                           const int height)
+{
+    if (!parent)
+        return nullptr;
+
+    const SubImageLoader rl = { parent, x, y, width, height};
+
+    const std::string str = std::string(parent->getIdPath()).append(
+        ",[").append(
+        toString(x)).append(
+        ",").append(
+        toString(y)).append(
+        ",").append(
+        toString(width)).append(
+        "x").append(
+        toString(height)).append(
+        "]");
+    return static_cast<Image*>(resourceManager->get(str,
+        SubImageLoader::load, &rl));
+}