From b1f20b6f54f4d803d1c9161867ee36cd6081c901 Mon Sep 17 00:00:00 2001
From: chatlanin <zimin@chatlanin.com.ru>
Date: Sat, 15 Apr 2023 15:00:03 +0300
Subject: [PATCH] add media img preview

---
 .../gui/browser/navigation/navigation.cpp     | 10 ++++++++
 .../gui/browser/navigation/navigation.hpp     |  1 +
 .../layers/gui/browser/preview/preview.cpp    | 24 ++++++++++++++++++-
 .../layers/gui/browser/preview/preview.hpp    |  7 ++++++
 src/rrr/utils/types.hpp                       |  3 ++-
 5 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/src/rrr/layers/gui/browser/navigation/navigation.cpp b/src/rrr/layers/gui/browser/navigation/navigation.cpp
index 4809622..c890287 100644
--- a/src/rrr/layers/gui/browser/navigation/navigation.cpp
+++ b/src/rrr/layers/gui/browser/navigation/navigation.cpp
@@ -333,6 +333,8 @@ namespace rrr::layers::gui
       em->execute(types::event_type::SHOW_HELP_DIALOG, nullptr);
       freeze = true;
     }
+
+    detect_img();
   }
   
   void navigation::released(system_event& e)
@@ -433,4 +435,12 @@ namespace rrr::layers::gui
     buffers::get_instance().single_cut_buffer.clear();
     selected_file = cnt->get_selected_file(TYPE_WIN::NAVIGATION);
   }
+
+  void navigation::detect_img()
+  {
+    if (selected_file.path.extension() == ".jpg" ||
+        selected_file.path.extension() == ".jpeg" ||
+        selected_file.path.extension() == ".png")
+      em->execute(types::event_type::SHOW_IMG, selected_file.path);
+  }
 }
diff --git a/src/rrr/layers/gui/browser/navigation/navigation.hpp b/src/rrr/layers/gui/browser/navigation/navigation.hpp
index 8c84332..f095600 100644
--- a/src/rrr/layers/gui/browser/navigation/navigation.hpp
+++ b/src/rrr/layers/gui/browser/navigation/navigation.hpp
@@ -70,6 +70,7 @@ namespace rrr::layers::gui
       void set_scroll();
       void paste_from_copy(); // вставка после копирования
       void paste_from_cut();  // вставки после вырезания
+      void detect_img();
   };
 }
 
diff --git a/src/rrr/layers/gui/browser/preview/preview.cpp b/src/rrr/layers/gui/browser/preview/preview.cpp
index 4a60849..202b8f8 100644
--- a/src/rrr/layers/gui/browser/preview/preview.cpp
+++ b/src/rrr/layers/gui/browser/preview/preview.cpp
@@ -29,7 +29,7 @@ namespace rrr::layers::gui
 
     BEGIN_IMGUI_WIN();
 
-    auto pos = ImGui::GetCursorPos();
+    ImVec2 pos = ImGui::GetCursorPos();
     pos.x += 17.f;
     pos.y += 9.f; // небольшой отступ сверху
     ImGui::SetCursorPosY(pos.y);
@@ -37,6 +37,22 @@ namespace rrr::layers::gui
     auto begin = data->begin() + delta;
     auto end = data->end();
 
+    // потоки разные у on_event и этот
+    // по этому создание незя делать в switch
+    if (make_media)
+    {
+      make_media = false;
+      tx.make();
+      frame = cv::imread(media_path);
+      cv::cvtColor(frame, frame, cv::COLOR_BGR2RGBA);
+      tx.bind(frame);
+      media_show = true;
+      hack::log()(width, height);
+    }
+
+    if (media_show)
+      tx.draw(ImVec2(pos.x + 830.f, pos.y), ImVec2(width + 850.f, frame.rows / 1.6f));
+
     for (files::iterator it = begin; it != end; ++it)
     {
       auto item = *it;
@@ -98,12 +114,18 @@ namespace rrr::layers::gui
       case types::event_type::NAVIGATION_DOWN:
       case types::event_type::NAVIGATION_LEFT:
       case types::event_type::NAVIGATION_RIGHT:
+        media_path.clear();
+        media_show = false;
         selected_file = cnt->get_selected_file(TYPE_WIN::PREVIEW);
         cursor_position = 0;
         current_position = 0;
         delta = 0;
         set_scroll();
         break;
+      case types::event_type::SHOW_IMG:
+        media_path = std::any_cast<std::filesystem::path>(value);
+        make_media = true;
+        break;
       default:
         break;
     }
diff --git a/src/rrr/layers/gui/browser/preview/preview.hpp b/src/rrr/layers/gui/browser/preview/preview.hpp
index c15a9f8..16661c7 100644
--- a/src/rrr/layers/gui/browser/preview/preview.hpp
+++ b/src/rrr/layers/gui/browser/preview/preview.hpp
@@ -41,6 +41,13 @@ namespace rrr::layers::gui
       int cursor_position = 0; // позиция курсора относительно высоты экрана
       int delta = 0;
       enum class MOVE_DIRECTION { UP, DOWN };
+
+      std::filesystem::path media_path;
+      try_engine::texture tx;
+      cv::Mat frame;
+      cv::VideoCapture cap;
+      bool media_show = false;
+      bool make_media = false;
       
     private:
       const ImVec4 dir_color = func::get_IMGUI_color<ImVec4>(91.f, 128.f, 191.f);
diff --git a/src/rrr/utils/types.hpp b/src/rrr/utils/types.hpp
index a1f61d2..999f6f1 100644
--- a/src/rrr/utils/types.hpp
+++ b/src/rrr/utils/types.hpp
@@ -17,7 +17,8 @@ namespace rrr::types
     CREATE_FILE,
     SHOW_RENAME_FILE_DIALOG,
     RENAME_FILE,
-    SHOW_HELP_DIALOG
+    SHOW_HELP_DIALOG,
+    SHOW_IMG
   };
 }