Add support for custom BMP icons and custom NDS banners for games and folders. Closes #53 and Closes #62

arm9/source/romBrowser/IconRepository.cpp

@@ -0,0 +1,65 @@
+#include "common.h"
+#include <string.h>
+#include "core/mini-printf.h"
+#include "fat/Directory.h"
+#include "FileType/NullFileTypeProvider.h"
+#include "FileType/BmpFileIconData.h"
+#include "SdFolderFactory.h"
+#include "IconRepository.h"
+
+void IconRepository::Initialize()
+{
+    InitializeFolders("/_pico/icons/");
+}
+
+SharedPtr<BmpFileIconData> IconRepository::GetIconForFile(const FileInfo& fileInfo, const char* gameCode) const
+{
+    char nameBuffer[256];
+    const auto& fileType = fileInfo.GetFileType();
+
+    if (fileType->GetClassification() == FileTypeClassification::Folder)
+    {
+        // Look for icon.bmp inside the folder (path relative to FatFs CWD = current browse dir).
+        // Scan with the already-open directory handle so the match can be turned directly into a
+        // FastFileRef, instead of stat'ing then re-opening the same path by name.
+        Directory folderDir;
+        if (folderDir.Open(fileInfo.GetFileName()) == FR_OK)
+        {
+            FILINFO folderFileInfo;
+            while (folderDir.Read(&folderFileInfo) == FR_OK && folderFileInfo.fname[0] != 0)
+            {
+                if (!(folderFileInfo.fattrib & AM_DIR) && !strcasecmp(folderFileInfo.fname, "icon.bmp"))
+                {
+                    return SharedPtr<BmpFileIconData>::MakeShared(
+                        FastFileRef(folderDir.GetFatFsDirectory(), &folderFileInfo));
+                }
+            }
+        }
+
+        return nullptr;
+    }
+
+    const FileInfo* iconFile = nullptr;
+
+    // Try to get an icon based on the filename in the user folder
+    if (_userFolder)
+    {
+        mini_snprintf(nameBuffer, sizeof(nameBuffer), "%s.bmp", fileInfo.GetFileName());
+        iconFile = _userFolder->BinarySearch(nameBuffer);
+    }
+
+    // Try to get an icon based on an internal game code
+    if (!iconFile && gameCode)
+    {
+        const auto* iconFolder = GetFileTypeFolder(fileType->GetShortName());
+        if (iconFolder)
+        {
+            mini_snprintf(nameBuffer, sizeof(nameBuffer), "%s.bmp", gameCode);
+            iconFile = iconFolder->BinarySearch(nameBuffer);
+        }
+    }
+
+    return iconFile
+        ? SharedPtr<BmpFileIconData>::MakeShared(iconFile->GetFastFileRef())
+        : nullptr;
+}