Fixes

Src/Editor/imp/cpp/UI/View/FilePreview.cpp

@@ -0,0 +1,170 @@
+// IAEngine: 2D Game Engine by IA
+// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
+//
+// 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/>.
+
+#include <UI/View/FilePreview.hpp>
+
+#include <IAEngine/Asset/AssetManager.hpp>
+#include <RenderCore/RenderCore.hpp>
+
+#include <Editor.hpp>
+
+#include <fstream>
+
+namespace ia::iae
+{
+    BOOL is_extension_one_of(IN PCCHAR ext, IN std::initializer_list<PCCHAR> values)
+    {
+        for (const auto &t : values)
+        {
+            if (!strcmp(ext, t))
+                return true;
+        }
+        return false;
+    }
+
+    Vector<String> get_lines_of_file(IN CONST Path &path)
+    {
+        Vector<String> result;
+        std::string line;
+        std::ifstream file(path);
+        while (std::getline(file, line))
+            result.pushBack(line.c_str());
+        return result;
+    }
+
+    VOID View_FilePreview::Initialize()
+    {
+        SetName("File Preview");
+        SetIcon(ICON_FA_MAGNIFYING_GLASS);
+    }
+
+    VOID View_FilePreview::Terminate()
+    {
+    }
+
+    VOID View_FilePreview::Render()
+    {
+        PreRender();
+
+        if (m_filePath.empty())
+        {
+            PostRender();
+            return;
+        }
+
+        switch (m_fileType)
+        {
+        case EFileType::UNKNOWN:
+            RenderUnknownFile();
+            break;
+
+        case EFileType::TEXT:
+            RenderTextFile();
+            break;
+
+        case EFileType::IMAGE:
+            RenderImageFile();
+            break;
+        }
+
+        PostRender();
+    }
+
+    VOID View_FilePreview::Update()
+    {
+    }
+
+    VOID View_FilePreview::OnEvent(IN SDL_Event *event)
+    {
+    }
+
+    VOID View_FilePreview::Open(IN Path path)
+    {
+        Close();
+        m_filePath = path;
+        m_fileType = EFileType::UNKNOWN;
+
+        const auto ext = path.extension().string();
+        if (is_extension_one_of(&ext[1], {"txt", "xml", "md", "cpp", "c", "hpp", "h"}))
+        {
+            m_fileType = EFileType::TEXT;
+            const auto lines = get_lines_of_file(path);
+            m_fileDataSize = lines.size();
+            const auto fileData = new String[m_fileDataSize];
+            for (SIZE_T i = 0; i < m_fileDataSize; i++)
+                fileData[i] = lines[i];
+            m_fileData = fileData;
+        }
+        else if (is_extension_one_of(&ext[1], {"png", "jpg", "webp"}))
+        {
+            m_fileType = EFileType::IMAGE;
+            m_fileDataSize = SIZE_MAX;
+            const auto image = AssetManager::LoadTexture(path.string().c_str())->GetHandle()->ImagePtr;
+            m_fileDataExtent = IVec2{image->Width, image->Height};
+            m_fileData = (PVOID)RDC::BakeTexture(image);
+        }
+    }
+
+    VOID View_FilePreview::Close()
+    {
+        switch (m_fileType)
+        {
+        case EFileType::UNKNOWN:
+            break;
+
+        case EFileType::TEXT:
+            delete[] ((String *) m_fileData);
+            m_fileDataSize = 0;
+            m_fileData = nullptr;
+            break;
+
+        case EFileType::IMAGE:
+            m_fileDataSize = 0;
+            m_fileData = nullptr;
+            m_fileDataExtent = {};
+            break;
+        }
+
+        m_filePath = Path();
+        m_fileType = EFileType::UNKNOWN;
+    }
+
+    VOID View_FilePreview::RenderTextFile()
+    {
+        const auto lines = (String*)m_fileData;
+        for(SIZE_T i = 0; i < m_fileDataSize; i++)
+            ImGui::Text("%s", lines[i].c_str());
+    }
+
+    VOID View_FilePreview::RenderImageFile()
+    {
+        UI::PadX();
+        UI::PadY();
+        if(ImGui::Button("Mark as Asset"))
+            Editor::Instance().MarkAsAsset(m_filePath);
+        UI::PadY();
+
+        const auto ImageWidth = m_extent.x * 0.75f;
+        UI::AlignCursorHCenter(ImRect{{}, m_extent}, ImageWidth);
+        const auto aspectRatio = static_cast<FLOAT32>(m_fileDataExtent.y)/static_cast<FLOAT32>(m_fileDataExtent.x);
+        ImGui::Image((ImTextureRef)m_fileData, {ImageWidth, aspectRatio * ImageWidth});
+    }
+
+    VOID View_FilePreview::RenderUnknownFile()
+    {
+        UI::DrawTextCentered(m_extent, "Unsupported File Format");
+    }
+} // namespace ia::iae