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include/image.hpp

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+// Display images inside a terminal
+// Copyright (C) 2023  JustKidding
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#ifndef IMAGE_H
+#define IMAGE_H
+
+#include <filesystem>
+#include <memory>
+#include <nlohmann/json.hpp>
+#include <string>
+
+#include "dimensions.hpp"
+#include "terminal.hpp"
+
+class Image
+{
+  public:
+    static auto load(const nlohmann::json &command, const Terminal *terminal) -> std::unique_ptr<Image>;
+    static auto check_cache(const Dimensions &dimensions, const std::filesystem::path &orig_path) -> std::string;
+    static auto get_dimensions(const nlohmann::json &json, const Terminal *terminal) -> std::shared_ptr<Dimensions>;
+
+    virtual ~Image() = default;
+
+    [[nodiscard]] virtual auto dimensions() const -> const Dimensions & = 0;
+    [[nodiscard]] virtual auto width() const -> int = 0;
+    [[nodiscard]] virtual auto height() const -> int = 0;
+    [[nodiscard]] virtual auto size() const -> size_t = 0;
+    [[nodiscard]] virtual auto data() const -> const unsigned char * = 0;
+    [[nodiscard]] virtual auto channels() const -> int = 0;
+
+    [[nodiscard]] virtual auto frame_delay() const -> int { return -1; }
+    [[nodiscard]] virtual auto is_animated() const -> bool { return false; }
+    [[nodiscard]] virtual auto filename() const -> std::string = 0;
+    virtual auto next_frame() -> void {}
+
+  protected:
+    [[nodiscard]] auto get_new_sizes(double max_width, double max_height, std::string_view scaler,
+                                     int scale_factor = 0) const -> std::pair<int, int>;
+};
+
+#endif