Add image upscaling with waifu2x-ncnn-vulkan, async load images in scroll image view mode

1 files changed, 14 insertions, 2 deletions

diff --git a/include/ImageViewer.hpp b/include/ImageViewer.hpp
index 7fe4921..93e7d7c 100644
--- a/include/ImageViewer.hpp
+++ b/include/ImageViewer.hpp
@@ -9,14 +9,22 @@
 #include <SFML/Graphics/Font.hpp>
 #include <SFML/Graphics/Text.hpp>
 #include <SFML/System/Clock.hpp>
+#include <thread>
 
 namespace QuickMedia {
     class Manga;
 
+    enum class ImageStatus {
+        WAITING,
+        LOADING,
+        FAILED_TO_LOAD,
+        LOADED
+    };
+
     struct ImageData {
         sf::Texture texture;
         sf::Sprite sprite;
-        bool failed_to_load_image;
+        ImageStatus image_status;
         bool visible_on_screen;
     };
 
@@ -39,6 +47,7 @@ namespace QuickMedia {
         int get_focused_page() const;
         int get_num_pages() const { return num_pages; }
     private:
+        void load_image_async(const Path &path, std::shared_ptr<ImageData> image_data, int page);
         bool render_page(sf::RenderWindow &window, int page, double offset_y);
         sf::Vector2<double> get_page_size(int page);
     private:
@@ -61,7 +70,7 @@ namespace QuickMedia {
         sf::Clock frame_timer;
         sf::Text page_text;
 
-        std::vector<std::unique_ptr<ImageData>> image_data;
+        std::vector<std::shared_ptr<ImageData>> image_data;
         std::vector<PageSize> page_size;
 
         sf::Vector2<double> window_size;
@@ -77,5 +86,8 @@ namespace QuickMedia {
 
         bool up_pressed = false;
         bool down_pressed = false;
+
+        std::thread image_loader_thread;
+        bool loading_image = false;
     };
 }
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