From 0f9f9d62832c273e876c1d7c7dfc2c4e084a2d73 Mon Sep 17 00:00:00 2001
From: Martin Felis <martin@fysx.org>
Date: Tue, 11 Mar 2025 23:02:11 +0100
Subject: [PATCH] Added file dialog to graph editor.

---
 CMakeLists.txt                         | 13 ++++-
 README.md                              |  7 +++
 src/AnimGraphEditor/AnimGraphEditor.cc | 71 +++++++++++++++++++++-----
 src/main.cc                            |  6 +++
 4 files changed, 82 insertions(+), 15 deletions(-)
 create mode 100644 README.md

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 66eb1a0..c34a946 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,8 @@ set(ozz_build_simd_ref OFF CACHE BOOL "")
 set(ozz_build_msvc_rt_dll OFF CACHE BOOL "")
 add_subdirectory(3rdparty/ozz-animation)
 
+add_subdirectory(3rdparty/nativefiledialog-extended)
+
 set(ThirdPartyIncludeDeps
         PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
         PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/3rdparty/glfw/deps>
@@ -121,7 +123,16 @@ target_sources(AnimTestbed PRIVATE
         3rdparty/imgui/imgui_stacklayout_internal.h
 )
 
-target_link_libraries(AnimTestbed AnimTestbedCode glfw ozz_base ozz_geometry ozz_animation ${OPENGL_LIBRARIES})
+target_link_libraries(AnimTestbed
+        PUBLIC
+        AnimTestbedCode
+        glfw
+        ozz_base
+        ozz_geometry
+        ozz_animation
+        ${OPENGL_LIBRARIES}
+        PRIVATE
+        nfd)
 
 # Tests
 add_executable(runtests)
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..af0f677
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# AnimTestbed
+
+A yet to be named project that implements an animation engine based on hierarchical blend trees.
+
+# Dependencies
+
+apt-get install libgtk-3-dev libxapp-gtk3-module  
diff --git a/src/AnimGraphEditor/AnimGraphEditor.cc b/src/AnimGraphEditor/AnimGraphEditor.cc
index 3305482..1ce6c82 100644
--- a/src/AnimGraphEditor/AnimGraphEditor.cc
+++ b/src/AnimGraphEditor/AnimGraphEditor.cc
@@ -14,9 +14,11 @@
 #include "imgui.h"
 #include "imnodes.h"
 #include "misc/cpp/imgui_stdlib.h"
+#include "nfd.h"
 #include "src/AnimGraph/AnimGraphResource.h"
 
 struct EditorState {
+  std::string filename;
   AnimGraphResource* rootGraphResource = nullptr;
 
   std::vector<AnimGraphResource*> hierarchyStack;
@@ -381,6 +383,7 @@ void AnimGraphEditorClear() {
     delete sEditorState.rootGraphResource;
   }
 
+  sEditorState.filename = "";
   sEditorState.rootGraphResource =
       dynamic_cast<AnimGraphResource*>(AnimNodeResourceFactory("BlendTree"));
   sEditorState.rootGraphResource->m_name = "Root";
@@ -452,22 +455,60 @@ void BlendTreeEditorNodePopup() {
 
 void AnimGraphEditorMenuBar() {
   ImGui::BeginMenuBar();
-  if (ImGui::Button("Save")) {
-    sEditorState.rootGraphResource->SaveToFile("editor_graph.json");
-  }
-  if (ImGui::Button("Load")) {
-    AnimGraphEditorClear();
+  if (ImGui::BeginMenu("File")) {
+    if (ImGui::MenuItem("New")) {
+      AnimGraphEditorClear();
+    }
+    if (ImGui::MenuItem("Load ...", "Ctrl+L")) {
+      nfdu8char_t* outPath;
+      nfdu8filteritem_t filters[1] = {{"Json files", "json"}};
+      nfdopendialogu8args_t args = {0};
+      args.filterList = filters;
+      args.filterCount = 1;
+      args.defaultPath = ".";
+      nfdresult_t result = NFD_OpenDialogU8_With(&outPath, &args);
 
-    delete sEditorState.rootGraphResource;
+      if (result == NFD_OKAY) {
+        AnimGraphEditorClear();
+        delete sEditorState.rootGraphResource;
 
-    sEditorState.rootGraphResource =
-        AnimGraphResource::CreateFromFile("editor_graph.json");
+        sEditorState.filename = outPath;
+        sEditorState.rootGraphResource =
+            AnimGraphResource::CreateFromFile(sEditorState.filename.c_str());
 
-    AnimGraphEditorResetHierarchyStack();
-  }
-  if (ImGui::Button("Clear")) {
-    AnimGraphEditorClear();
+        AnimGraphEditorResetHierarchyStack();
+        NFD_FreePathU8(outPath);
+      }
+    }
+
+    if (ImGui::MenuItem(
+            "Save",
+            "Ctrl+S",
+            nullptr,
+            !sEditorState.filename.empty())) {
+      sEditorState.rootGraphResource->SaveToFile(sEditorState.filename.c_str());
+    }
+    if (ImGui::MenuItem("Save as ...")) {
+      nfdu8char_t* outPath;
+      nfdu8filteritem_t filters[1] = {{"Json files", "json"}};
+      nfdsavedialogu8args_t args = {0};
+      args.filterList = filters;
+      args.filterCount = 1;
+      args.defaultPath = ".";
+      nfdresult_t result =
+          NFD_SaveDialogU8(&outPath, args.filterList, 1, ".", "BlendTree.json");
+
+      if (result == NFD_OKAY) {
+        sEditorState.filename = outPath;
+        sEditorState.rootGraphResource->SaveToFile(
+            sEditorState.filename.c_str());
+        NFD_FreePathU8(outPath);
+      }
+    }
+
+    ImGui::EndMenu();
   }
+
   if (ImGui::Button("Content")) {
     ax::NodeEditor::NavigateToContent();
   }
@@ -487,9 +528,11 @@ void AnimGraphEditorMenuBar() {
 }
 
 void AnimGraphEditorBreadcrumbNavigation() {
+  ImGui::Text("Navigation:");
+  ImGui::SameLine();
+
   for (size_t i = 0, n = sEditorState.hierarchyStack.size(); i < n; i++) {
-    AnimGraphResource* graph_resource =
-        dynamic_cast<AnimGraphResource*>(sEditorState.hierarchyStack[i]);
+    AnimGraphResource* graph_resource = sEditorState.hierarchyStack[i];
     ImGui::PushID(graph_resource);
 
     bool highlight_button = i == sEditorState.hierarchyStackIndex;
diff --git a/src/main.cc b/src/main.cc
index b868b91..419174e 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -20,6 +20,7 @@
 
 #include "3rdparty/imgui-node-editor/imgui_node_editor.h"
 #include "3rdparty/json/json.hpp"
+#include "3rdparty/nativefiledialog-extended/src/include/nfd.h"
 #include "AnimGraph/AnimGraphBlendTree.h"
 #include "AnimGraph/AnimGraphData.h"
 #include "AnimGraphEditor/AnimGraphEditor.h"
@@ -462,6 +463,8 @@ int main() {
         gApplicationConfig.window_size[1]);
   }
 
+  NFD_Init();
+
   // setup sokol_gfx and sokol_time
   stm_setup();
   sg_desc desc = {
@@ -1065,6 +1068,9 @@ int main() {
 
   sgl_shutdown();
   sg_shutdown();
+
+  NFD_Quit();
+
   glfwTerminate();
   return 0;
 }