Merge pull request #5772 from Web-eWorks/editor-frontend

Editor Welcome Screen

src/editor/EditorApp.cpp

@@ -4,6 +4,8 @@
 #include "EditorApp.h"
 
 #include "EditorDraw.h"
+#include "EditorIcons.h"
+#include "MathUtil.h"
 #include "Modal.h"
 
 #include "FileSystem.h"
@@ -17,6 +19,7 @@
 #include "core/IniConfig.h"
 #include "core/OS.h"
 #include "graphics/Graphics.h"
+#include "imgui/imgui.h"
 #include "lua/Lua.h"
 #include "graphics/opengl/RendererGL.h"
 
@@ -71,6 +74,8 @@ void EditorApp::Initialize(argh::parser &cmdline)
  SetAppName("SystemEditor");
  return;
  }
+
+ QueueLifecycle(RefCountedPtr<Application::Lifecycle>(new EditorWelcomeScreen(this)));
 }
 
 void EditorApp::AddLoadingTask(TaskSet::Handle handle)
@@ -232,3 +237,81 @@ void LoadingPhase::Update(float dt)
  RequestEndLifecycle();
  }
 }
+
+// ============================================================================
+// Welcome Screen
+// ============================================================================
+
+static inline ImVec4 operator*(const ImVec4& lhs, const float& rhs) { return ImVec4(lhs.x * rhs, lhs.y * rhs, lhs.z * rhs, lhs.w * rhs); }
+
+ImVec2 CalcEditorModeButtonSize(const char *label, float iconSize)
+{
+ ImVec2 textSize = ImGui::CalcTextSize(label, nullptr, false, iconSize);
+ return ImVec2(iconSize, iconSize + ImGui::GetStyle().ItemSpacing.y + textSize.y) + ImGui::GetStyle().FramePadding * 2.f;
+}
+
+bool DrawEditorModeButton(const char *label, const char *icon, float iconSize, PiGui::Instance *pigui)
+{
+ ImGuiStyle &style = ImGui::GetStyle();
+
+ ImVec2 size = CalcEditorModeButtonSize(label, iconSize);
+ ImVec2 pos = ImGui::GetCursorScreenPos();
+ ImVec2 padding = style.FramePadding;
+
+ bool clicked = ImGui::InvisibleButton(label, size);
+ bool hovered = ImGui::IsItemHovered();
+ float timer = ImGui::GetCurrentContext()->HoveredIdTimer;
+
+ ImColor regular = style.Colors[ImGuiCol_Text];
+ ImColor active = style.Colors[ImGuiCol_ButtonHovered];
+ ImColor col = hovered ? ImColor(ImLerp<ImVec4>(regular, active, std::min(1.f, timer * 8.f))) : regular;
+
+ ImDrawList *dl = ImGui::GetWindowDrawList();
+
+ dl->AddRect(pos, pos + size, ImColor(style.Colors[ImGuiCol_FrameBg]), style.FrameRounding, 0, 2.f);
+
+ ImGui::PushFont(pigui->GetFont("icons", iconSize));
+ dl->AddText(pos + padding, col, icon);
+ ImGui::PopFont();
+
+ ImVec2 textSize = ImGui::CalcTextSize(label, nullptr, false, iconSize);
+ ImVec2 textOffset = ImVec2(
+ (iconSize - textSize.x) / 2.f,
+ iconSize + style.ItemSpacing.y);
+
+ dl->AddText(nullptr, 0, pos + padding + textOffset, regular, label, nullptr, textSize.x);
+
+ return clicked;
+}
+
+void EditorWelcomeScreen::Update(float dt)
+{
+ Draw::BeginHostWindow("##fullscreen");
+
+ PiGui::Instance *pigui = m_app->GetPiGui();
+
+ float iconSize = 128;
+ int numButtons = 2;
+ ImVec2 size = CalcEditorModeButtonSize("Model Viewer", iconSize);
+
+ ImGui::SetCursorPos((ImGui::GetWindowSize() - ImVec2(size.x * numButtons + ImGui::GetStyle().ItemSpacing.x, size.y)) / 2.f);
+ ImGui::BeginGroup();
+
+ if (DrawEditorModeButton("Model Viewer", EICON_SURFACE_STATION, iconSize, pigui)) {
+ m_app->QueueLifecycle(RefCountedPtr<ModelViewer>(new ModelViewer(m_app, Lua::manager)));
+ m_app->SetAppName("Model Viewer");
+ RequestEndLifecycle();
+ }
+
+ ImGui::SameLine();
+
+ if (DrawEditorModeButton("System Editor", EICON_SYSTEM_EDITOR, iconSize, pigui)) {
+ m_app->QueueLifecycle(RefCountedPtr<SystemEditor>(new SystemEditor(m_app)));
+ m_app->SetAppName("System Editor");
+ RequestEndLifecycle();
+ }
+
+ ImGui::EndGroup();
+
+ ImGui::End();
+}

src/editor/EditorApp.h

@@ -75,4 +75,18 @@ namespace Editor {
  float minRuntime = 1.f;
  };
 
+ class EditorWelcomeScreen : public Application::Lifecycle {
+ public:
+ EditorWelcomeScreen(EditorApp *app) :
+ Application::Lifecycle(),
+ m_app(app)
+ {}
+
+ protected:
+ void Update(float dt) override;
+
+ private:
+ EditorApp *m_app;
+ };
+
 } // namespace Editor

src/editor/EditorIcons.h

@@ -12,6 +12,8 @@
 #define EICON_SPACE_STATION u8"\uF063"
 #define EICON_SURFACE_STATION u8"\uF073"
 
+#define EICON_SYSTEM_EDITOR u8"\uF08E"
+
 #define EICON_STOP u8"\uF054"
 #define EICON_PAUSE u8"\uF055"
 #define EICON_PLAY u8"\uF056"

src/editor/system/SystemEditor.cpp

@@ -422,6 +422,8 @@ void SystemEditor::RegisterMenuActions()
  if (HasUnsavedChanges()) {
  m_unsavedFileModal = m_app->PushModal<UnsavedFileModal>();
  m_pendingFileReq = FileRequest_Quit;
+ } else {
+ RequestEndLifecycle();
  }
  }
  });