atdunbg
fd2d8f9b34
The file list was hardwired to the root directory, so it was always empty (all assets live in subdirectories). Directories are now selectable from both the tree (click row) and the list (click [D] row), with a breadcrumb + Root button. Prefix check done manually (path::starts_with is missing in this libstdc++).
294 lines
9.2 KiB
C++
294 lines
9.2 KiB
C++
//
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// AssetBrowserPanel.cpp：项目资产浏览器实现。
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//
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#include "AssetBrowserPanel.h"
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#include <Engine/Core/Log.h>
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#include <imgui.h>
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#include <algorithm>
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#include <cctype>
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#include <filesystem>
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#include <vector>
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namespace {
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// 固定根：下标与 Editor 无耦合，仅面板内部使用
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constexpr const char* kRootNames[] = {"Assets", "Scenes"};
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constexpr const char* kRootPaths[] = {"assets", "scenes"};
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// 类型过滤（下标即身份）：0 = All
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constexpr const char* kTypeNames[] = {"All", "Models", "Textures",
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"Scenes"};
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// 资产类别：按扩展名分派（过滤用）
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enum class Kind { Model, Texture, Scene, Other };
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Kind KindOf(const std::filesystem::path& p)
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{
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std::string ext = p.extension().string();
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std::transform(ext.begin(), ext.end(), ext.begin(),
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[](unsigned char c) { return std::tolower(c); });
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if (ext == ".gltf" || ext == ".glb" || ext == ".fbx" ||
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ext == ".obj")
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{
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return Kind::Model;
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}
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if (ext == ".hdr" || ext == ".png" || ext == ".jpg" ||
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ext == ".jpeg")
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{
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return Kind::Texture;
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}
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if (ext == ".scene")
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{
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return Kind::Scene;
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}
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return Kind::Other;
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}
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bool PassFilter(int typeFilter, Kind kind)
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{
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switch (typeFilter)
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{
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case 1: return kind == Kind::Model;
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case 2: return kind == Kind::Texture;
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case 3: return kind == Kind::Scene;
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default: return true;
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}
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}
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// 列表条目前缀符号（ImGui 默认字体无图标字形，用 ASCII 标签）
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const char* KindTag(Kind kind)
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{
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switch (kind)
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{
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case Kind::Model: return "[M]";
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case Kind::Texture: return "[T]";
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case Kind::Scene: return "[S]";
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default: return "[ ]";
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}
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}
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// 相对路径规范化为正斜杠（AssetManager 键与场景文件统一 POSIX 风格）
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std::string ToAssetPath(const std::filesystem::path& p)
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{
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std::string s = p.generic_string();
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std::replace(s.begin(), s.end(), '\\', '/');
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return s;
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}
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} // namespace
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void AssetBrowserPanel::Draw(const EditorContext& ctx)
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{
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if (!ImGui::Begin("Asset Browser"))
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{
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ImGui::End();
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return;
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}
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// ---- 顶栏：根切换 + 类型过滤 + 名字过滤 ----
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if (ImGui::BeginTabBar("##roots"))
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{
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for (int i = 0; i < 2; ++i)
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{
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if (ImGui::BeginTabItem(kRootNames[i]))
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{
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m_Root = i;
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ImGui::EndTabItem();
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}
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}
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ImGui::EndTabBar();
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}
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ImGui::SameLine();
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ImGui::SetNextItemWidth(110.0f);
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ImGui::Combo("##type", &m_TypeFilter, kTypeNames, 4);
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ImGui::SameLine();
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ImGui::SetNextItemWidth(140.0f);
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ImGui::InputTextWithHint("##name", "filter", m_NameFilter,
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sizeof(m_NameFilter));
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ImGui::Separator();
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const std::filesystem::path root(kRootPaths[m_Root]);
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// 根切换 / 首帧：当前目录回根。前缀比较手写（path::starts_with
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// 是 libstdc++ 11 才补齐的成员，本机 GCC 没有）；补 '/' 分隔校验
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// 防 "assets_x" 之类误匹配
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const std::string rootStr = root.generic_string();
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const std::string curStr = m_CurrentDir.generic_string();
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const bool under = curStr == rootStr ||
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(curStr.size() > rootStr.size() &&
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curStr.compare(0, rootStr.size(), rootStr) == 0 &&
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curStr[rootStr.size()] == '/');
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if (m_CurrentDir.empty() || !under)
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{
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m_CurrentDir = root;
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}
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// ---- 顶栏下：面包屑（当前目录相对根路径 + 回根按钮）----
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if (ImGui::Button("Root"))
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{
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m_CurrentDir = root;
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}
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ImGui::SameLine();
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std::string rel = std::filesystem::relative(m_CurrentDir, root)
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.generic_string();
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ImGui::TextDisabled("%s/%s", kRootNames[m_Root],
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rel.empty() ? "" : rel.c_str());
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ImGui::Separator();
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// ---- 左：目录树 | 右：当前目录文件列表 ----
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const float treeWidth = 180.0f;
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ImGui::BeginChild("##tree", ImVec2(treeWidth, 0.0f),
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ImGuiChildFlags_ResizeX | ImGuiChildFlags_Borders);
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if (std::filesystem::exists(root))
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{
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// 根节点也画进树（可点击选中）
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ImGui::SetNextItemOpen(true, ImGuiCond_Once);
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if (ImGui::TreeNodeEx(kRootNames[m_Root],
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ImGuiTreeNodeFlags_OpenOnArrow))
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{
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if (ImGui::IsItemClicked(ImGuiMouseButton_Left))
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{
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m_CurrentDir = root;
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}
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DrawDirTree(ctx, root);
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ImGui::TreePop();
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}
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}
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else
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{
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ImGui::TextDisabled("(no '%s' dir)", kRootPaths[m_Root]);
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}
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ImGui::EndChild();
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ImGui::SameLine();
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ImGui::BeginChild("##files", ImVec2(0.0f, 0.0f),
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ImGuiChildFlags_Borders);
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if (std::filesystem::exists(m_CurrentDir))
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{
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DrawFileList(ctx, m_CurrentDir);
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}
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ImGui::EndChild();
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ImGui::End();
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}
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void AssetBrowserPanel::DrawDirTree(const EditorContext& ctx,
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const std::filesystem::path& dir)
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{
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for (const auto& entry : std::filesystem::directory_iterator(dir))
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{
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if (!entry.is_directory())
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{
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continue;
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}
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const std::string name = entry.path().filename().string();
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// OpenOnArrow：单击行 = 选中（列表切换），箭头 = 折叠
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const bool open = ImGui::TreeNodeEx(
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name.c_str(), ImGuiTreeNodeFlags_OpenOnArrow |
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ImGuiTreeNodeFlags_SpanFullWidth);
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if (ImGui::IsItemClicked(ImGuiMouseButton_Left))
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{
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m_CurrentDir = entry.path();
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}
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if (open)
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{
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DrawDirTree(ctx, entry.path());
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ImGui::TreePop();
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}
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}
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}
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void AssetBrowserPanel::DrawFileList(const EditorContext& ctx,
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const std::filesystem::path& dir)
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{
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// 收集 + 过滤 + 排序（名字序；目录迭代序不稳定）
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struct Item
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{
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std::filesystem::path path;
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Kind kind;
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};
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std::vector<Item> items;
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const std::string filter = m_NameFilter;
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for (const auto& entry : std::filesystem::directory_iterator(dir))
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{
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if (entry.is_directory())
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{
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// 子目录也进列表：单行点击进入（树/列表双向导航）
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const std::string dname = entry.path().filename().string();
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ImGui::PushID(dname.c_str());
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ImGui::TextUnformatted("[D]");
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ImGui::SameLine();
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if (ImGui::Selectable(dname.c_str()))
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{
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m_CurrentDir = entry.path();
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}
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ImGui::PopID();
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continue;
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}
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const Kind kind = KindOf(entry.path());
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if (!PassFilter(m_TypeFilter, kind))
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{
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continue;
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}
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if (!filter.empty())
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{
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const std::string name = entry.path().filename().string();
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if (name.find(filter) == std::string::npos)
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{
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continue;
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}
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}
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items.push_back({entry.path(), kind});
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}
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std::sort(items.begin(), items.end(),
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[](const Item& a, const Item& b)
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{
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return a.path.filename().string() <
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b.path.filename().string();
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});
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for (const auto& item : items)
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{
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const std::string name = item.path.filename().string();
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const std::string assetPath = ToAssetPath(item.path);
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ImGui::PushID(name.c_str());
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ImGui::TextUnformatted(KindTag(item.kind));
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ImGui::SameLine();
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ImGui::Selectable(name.c_str());
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// 双击预热：model/HDR 进缓存（路径去重，重复双击零成本）；
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// 场景加载含环境恢复/选中清理流程，提示走 File 菜单
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if (ImGui::IsItemHovered() &&
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ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left))
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{
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if (item.kind == Kind::Model && ctx.assets)
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{
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const auto ref = ctx.assets->LoadModel(assetPath);
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ENGINE_INFO("AssetBrowser: model '{}' loaded (valid={})",
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assetPath, ref.Valid());
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}
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else if (item.kind == Kind::Texture && ctx.assets)
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{
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const auto ref = ctx.assets->LoadEnvironment(assetPath);
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ENGINE_INFO("AssetBrowser: env '{}' loaded (valid={})",
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assetPath, ref.Valid());
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}
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else if (item.kind == Kind::Scene)
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{
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ENGINE_INFO("AssetBrowser: load scenes via File menu ({})",
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assetPath);
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}
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}
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// tooltip：完整相对路径（面板窄时文件名截断仍可辨识）
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if (ImGui::IsItemHovered())
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{
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ImGui::SetTooltip("%s", assetPath.c_str());
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}
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ImGui::PopID();
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}
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}
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