feat: add texture pack parsing

Signed-off-by: Sefa Eyeoglu <contact@scrumplex.net>

launcher/minecraft/mod/TexturePack.cpp

@@ -0,0 +1,45 @@
+#include "TexturePack.h"
+
+#include <QDebug>
+#include <QMap>
+#include <QRegularExpression>
+
+#include "minecraft/mod/tasks/LocalTexturePackParseTask.h"
+
+void TexturePack::setDescription(QString new_description)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    m_description = new_description;
+}
+
+void TexturePack::setImage(QImage new_image)
+{
+    QMutexLocker locker(&m_data_lock);
+
+    Q_ASSERT(!new_image.isNull());
+
+    if (m_pack_image_cache_key.key.isValid())
+        QPixmapCache::remove(m_pack_image_cache_key.key);
+
+    m_pack_image_cache_key.key = QPixmapCache::insert(QPixmap::fromImage(new_image));
+    m_pack_image_cache_key.was_ever_used = true;
+}
+
+QPixmap TexturePack::image(QSize size)
+{
+    QPixmap cached_image;
+    if (QPixmapCache::find(m_pack_image_cache_key.key, &cached_image)) {
+        if (size.isNull())
+            return cached_image;
+        return cached_image.scaled(size);
+    }
+
+    // No valid image we can get
+    if (!m_pack_image_cache_key.was_ever_used)
+        return {};
+
+    // Imaged got evicted from the cache. Re-process it and retry.
+    TexturePackUtils::process(*this);
+    return image(size);
+}