1 files changed, 119 insertions, 0 deletions
diff --git a/wx+/image_resources.cpp b/wx+/image_resources.cpp
new file mode 100644
index 00000000..6da12c17
--- /dev/null
+++ b/wx+/image_resources.cpp
@@ -0,0 +1,119 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved        *
+// **************************************************************************
+
+#include "image_resources.h"
+#include <memory>
+#include <map>
+#include <wx/wfstream.h>
+#include <wx/zipstrm.h>
+#include <wx/image.h>
+#include <wx/mstream.h>
+#include <zen/utf.h>
+
+using namespace zen;
+
+
+namespace
+{
+void loadAnimFromZip(wxZipInputStream& zipInput, wxAnimation& anim)
+{
+    //work around wxWidgets bug:
+    //construct seekable input stream (zip-input stream is non-seekable) for wxAnimation::Load()
+    //luckily this method call is very fast: below measurement precision!
+    std::vector<char> data;
+    data.reserve(10000);
+
+    int newValue = 0;
+    while ((newValue = zipInput.GetC()) != wxEOF)
+        data.push_back(newValue);
+
+    wxMemoryInputStream seekAbleStream(&data.front(), data.size()); //stream does not take ownership of data
+
+    anim.Load(seekAbleStream, wxANIMATION_TYPE_GIF);
+}
+
+
+class GlobalResources
+{
+public:
+    static GlobalResources& instance()
+    {
+        static GlobalResources inst;
+        return inst;
+    }
+
+    void init(const Zstring& filename);
+
+    const wxBitmap& getImage(const wxString& name) const;
+    const wxAnimation& getAnimation(const wxString& name) const;
+
+private:
+    GlobalResources() {}
+    GlobalResources(const GlobalResources&);
+    GlobalResources& operator=(const GlobalResources&);
+
+    std::map<wxString, wxBitmap> bitmaps;
+    std::map<wxString, wxAnimation> anims;
+};
+
+
+void GlobalResources::init(const Zstring& filename)
+{
+    wxFFileInputStream input(utfCvrtTo<wxString>(filename));
+    if (input.IsOk()) //if not... we don't want to react too harsh here
+    {
+        //activate support for .png files
+        wxImage::AddHandler(new wxPNGHandler); //ownership passed
+
+        wxZipInputStream resourceFile(input, wxConvUTF8);
+        //do NOT rely on wxConvLocal! On failure shows unhelpful popup "Cannot convert from the charset 'Unknown encoding (-1)'!"
+
+        while (true)
+        {
+            std::unique_ptr<wxZipEntry> entry(resourceFile.GetNextEntry()); //take ownership!
+            if (!entry)
+                break;
+
+            const wxString name = entry->GetName();
+
+            //generic image loading
+            if (endsWith(name, L".png"))
+                bitmaps.insert(std::make_pair(name, wxImage(resourceFile, wxBITMAP_TYPE_PNG)));
+            else if (endsWith(name, L".gif"))
+                loadAnimFromZip(resourceFile, anims[name]);
+        }
+    }
+}
+
+
+const wxBitmap& GlobalResources::getImage(const wxString& name) const
+{
+    auto it = bitmaps.find(contains(name, L'.') ? name : name + L".png"); //assume .png ending if nothing else specified
+    if (it != bitmaps.end())
+        return it->second;
+
+    assert(false);
+    return wxNullBitmap;
+}
+
+
+const wxAnimation& GlobalResources::getAnimation(const wxString& name) const
+{
+    auto it = anims.find(contains(name, L'.') ? name : name + L".gif");
+    if (it != anims.end())
+        return it->second;
+
+    assert(false);
+    return wxNullAnimation;
+}
+}
+
+
+void zen::initResourceImages(const Zstring& filename) { GlobalResources::instance().init(filename); }
+
+const wxBitmap& zen::getResourceImage(const wxString& name) { return GlobalResources::instance().getImage(name); }
+
+const wxAnimation& zen::getResourceAnimation(const wxString& name) { return GlobalResources::instance().getAnimation(name); }