Initial commit

arm9/source/themes/ThemeInfoFactory.thumb.cpp

@@ -0,0 +1,104 @@
+#include "common.h"
+#include "common.h"
+#include <memory>
+#include "fat/File.h"
+#include "json/ArduinoJson.h"
+#include "core/mini-printf.h"
+#include "core/math/Rgb.h"
+#include "ThemeInfoFactory.h"
+
+#pragma GCC optimize("Os")
+
+#define JSON_RESERVED_SIZE  2048
+
+#define KEY_TYPE            "type"
+#define KEY_NAME            "name"
+#define KEY_DESCRIPTION     "description"
+#define KEY_AUTHOR          "author"
+#define KEY_PRIMARY_COLOR   "primaryColor"
+#define KEY_COLOR_R         "r"
+#define KEY_COLOR_G         "g"
+#define KEY_COLOR_B         "b"
+#define KEY_DARK_THEME      "darkTheme"
+
+static bool tryParseThemeType(const char* themeTypeString, ThemeType& themeType)
+{
+    if (!themeTypeString)
+        return false;
+
+    if (!strcasecmp(themeTypeString, "Material"))
+        themeType = ThemeType::Material;
+    else if (!strcasecmp(themeTypeString, "Custom"))
+        themeType = ThemeType::Custom;
+    else
+        return false;
+
+    return true;
+}
+
+static Rgb<8, 8, 8> parseColor(const JsonObjectConst& json, const Rgb<8, 8, 8>& defaultColor)
+{
+    if (json.isNull())
+    {
+        return defaultColor;
+    }
+
+    return Rgb<8, 8, 8>(
+        json[KEY_COLOR_R] | 0,
+        json[KEY_COLOR_G] | 0,
+        json[KEY_COLOR_B] | 0
+    );
+}
+
+static std::unique_ptr<ThemeInfo> fromJson(const TCHAR* folderName, const JsonDocument& json)
+{
+    ThemeType themeType;
+    if (!tryParseThemeType(json[KEY_TYPE].as<const char*>(), themeType))
+    {
+        themeType = ThemeType::Custom;
+    }
+    return std::make_unique<ThemeInfo>(
+        folderName,
+        themeType,
+        json[KEY_NAME] | "",
+        json[KEY_DESCRIPTION] | "",
+        json[KEY_AUTHOR] | "",
+        parseColor(json[KEY_PRIMARY_COLOR], Rgb<8, 8, 8>(0xFF, 0xFF, 0xFF)),
+        json[KEY_DARK_THEME] | false
+    );
+}
+
+std::unique_ptr<ThemeInfo> ThemeInfoFactory::CreateFromThemeFolder(const TCHAR* folderName) const
+{
+    TCHAR pathBuffer[128];
+    mini_snprintf(pathBuffer, sizeof(pathBuffer), "/_pico/themes/%s/theme.json", folderName);
+
+    const auto file = std::make_unique<File>();
+    if (file->Open(pathBuffer, FA_READ | FA_OPEN_EXISTING) != FR_OK)
+    {
+        return nullptr;
+    }
+
+    u32 fileSize = file->GetSize();
+    if (fileSize == 0)
+    {
+        return nullptr;
+    }
+
+    std::unique_ptr<u8[]> fileData(new(cache_align) u8[fileSize]);
+    u8* fileDataPtr = fileData.get();
+
+    u32 bytesRead = 0;
+    if (file->Read(fileDataPtr, fileSize, bytesRead) != FR_OK)
+    {
+        return nullptr;
+    }
+
+    DynamicJsonDocument json(JSON_RESERVED_SIZE);
+    if (deserializeJson(json, fileDataPtr, fileSize) != DeserializationError::Ok)
+    {
+        return nullptr;
+    }
+
+    return fromJson(folderName, json);
+}