Add new debug / editor colorscheme

Pretty much copied from the Limit Theory editor's colorscheme.
Some support is added to PiGui::Instance to allow swapping style objects on the fly.

src/ModelViewer.cpp

@@ -45,7 +45,8 @@ ModelViewer::Options::Options() :
 	mouselookEnabled(false),
 	gridInterval(10.f),
 	lightPreset(0),
-	orthoView(false)
+	orthoView(false),
+	metricsWindow(false)
 {
 }
 
@@ -100,6 +101,10 @@ void ModelViewerApp::Startup()
 	StartupInput(config.get());
 	StartupPiGui();
 
+	GetPiGui()->SetDebugStyle();
+	// precache the editor font
+	GetPiGui()->GetFont("pionillium", 13);
+
 	NavLights::Init(renderer);
 	Shields::Init(renderer);
 
@@ -366,7 +371,7 @@ void ModelViewer::DrawBackground()
 
 	if (!m_bgBuffer.Valid()) {
 		const Color top = Color::BLACK;
-		const Color bottom = Color(77, 77, 77);
+		const Color bottom = Color(28, 31, 36);
 		Graphics::VertexArray bgArr(Graphics::ATTRIB_POSITION | Graphics::ATTRIB_DIFFUSE, 6);
 		// triangle 1
 		bgArr.Add(vector3f(0.f, 0.f, 0.f), bottom);
@@ -660,6 +665,10 @@ void ModelViewer::HandleInput()
 		AddLog(stringf("Scale/landing pad test %0", m_options.showLandingPad ? "on" : "off"));
 	}
 
+	if (m_input->IsKeyPressed(SDLK_i)) {
+		m_options.metricsWindow = !m_options.metricsWindow;
+	}
+
 	// random colors, eastereggish
 	if (m_input->IsKeyPressed(SDLK_r))
 		SetRandomColor();
@@ -961,7 +970,11 @@ void ModelViewer::DrawModelOptions()
 {
 	float itmWidth = ImGui::CalcItemWidth();
 
+	ImGui::PushFont(m_pigui->GetFont("pionillium", 14));
+	ImGui::AlignTextToFramePadding();
 	ImGui::TextUnformatted(m_modelName.c_str());
+	ImGui::PopFont();
+
 	ImGui::SameLine();
 	if (ImGui::Button("Reload Model"))
 		ReloadModel();
@@ -1099,6 +1112,8 @@ void ModelViewer::DrawPiGui()
 		return;
 	}
 
+	ImGui::PushFont(m_pigui->GetFont("pionillium", 13));
+
 	ImGui::SetNextWindowPos({ 0, 0 });
 	ImGui::SetNextWindowSize({ m_windowSize.x, m_windowSize.y });
 	ImGui::Begin("##background-display", nullptr, fullscreenFlags);
@@ -1134,6 +1149,11 @@ void ModelViewer::DrawPiGui()
 	}
 	ImGui::End();
 	ImGui::PopStyleVar(1);
+
+	if (m_options.metricsWindow)
+		ImGui::ShowDemoWindow();
+
+	ImGui::PopFont();
 }
 
 void ModelViewer::UpdateCamera(float deltaTime)

src/ModelViewer.h

@@ -122,6 +122,7 @@ private:
 		float gridInterval;
 		uint32_t lightPreset;
 		bool orthoView;
+		bool metricsWindow;
 
 		Options();
 	};

src/Pi.cpp

@@ -655,7 +655,9 @@ void MainMenu::Update(float deltaTime)
 
 	perfInfoDisplay->Update(deltaTime * 1e3, 0.0);
 	if (Pi::showDebugInfo) {
+		Pi::pigui->SetDebugStyle();
 		perfInfoDisplay->Draw();
+		Pi::pigui->SetNormalStyle();
 	}
 
 	Pi::pigui->Render();
@@ -1038,7 +1040,9 @@ void GameLoop::Update(float deltaTime)
 
 	// Render this even when we're dead.
 	if (Pi::showDebugInfo) {
+		Pi::pigui->SetDebugStyle();
 		perfInfoDisplay->Draw();
+		Pi::pigui->SetNormalStyle();
 	}
 
 	Pi::pigui->Render();

src/pigui/PiGui.cpp

@@ -112,12 +112,58 @@ ImTextureID PiGui::RenderSVG(Graphics::Renderer *renderer, std::string svgFilena
 	return makeTexture(renderer, img, W, H);
 }
 
+// Colors taken with love from the Limit Theory editor
+// http://forums.ltheory.com/viewtopic.php?f=30&t=6459
+void StyleColorsDarkPlus(ImGuiStyle &style)
+{
+	style.FramePadding = ImVec2(6, 5);
+
+	style.WindowRounding = 5.0;
+	style.ChildRounding = 2.0;
+	style.FrameRounding = 2.0;
+	style.GrabRounding = 2.0;
+	style.TabRounding = 2.0;
+
+	style.FrameBorderSize = 1.0;
+	style.TabBorderSize = 1.0;
+
+	style.Colors[ImGuiCol_WindowBg] = ImColor(24, 26, 31);
+	style.Colors[ImGuiCol_ChildBg] = ImColor(20, 22, 26);
+	style.Colors[ImGuiCol_PopupBg] = ImColor(20, 22, 26, 240);
+	style.Colors[ImGuiCol_Border] = ImColor(0, 0, 0);
+
+	style.Colors[ImGuiCol_FrameBg] = ImColor(33, 36, 43);
+	style.Colors[ImGuiCol_FrameBgHovered] = ImColor(45, 50, 59);
+	style.Colors[ImGuiCol_FrameBgActive] = ImColor(56, 126, 210);
+
+	style.Colors[ImGuiCol_TitleBg] = ImColor(20, 23, 26);
+	style.Colors[ImGuiCol_TitleBgActive] = ImColor(27, 31, 35);
+	style.Colors[ImGuiCol_TitleBgCollapsed] = ImColor(15, 17, 19);
+	style.Colors[ImGuiCol_MenuBarBg] = ImColor(20, 23, 26);
+
+	style.Colors[ImGuiCol_ScrollbarBg] = ImColor(19, 20, 24);
+	style.Colors[ImGuiCol_ScrollbarGrab] = ImColor(33, 36, 43);
+	style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImColor(81, 88, 105);
+	style.Colors[ImGuiCol_ScrollbarGrabActive] = ImColor(100, 109, 130);
+
+	style.Colors[ImGuiCol_Button] = ImColor(51, 56, 67);
+	style.Colors[ImGuiCol_Header] = ImColor(51, 56, 67);
+	style.Colors[ImGuiCol_HeaderHovered] = ImColor(56, 126, 210);
+	style.Colors[ImGuiCol_HeaderActive] = ImColor(66, 150, 250);
+
+	style.Colors[ImGuiCol_Tab] = ImColor(20, 23, 26);
+	style.Colors[ImGuiCol_TabActive] = ImColor(60, 133, 224);
+	style.Colors[ImGuiCol_TabHovered] = ImColor(66, 150, 250);
+}
+
 //
 //	PiGui::Instance
 //
 
 Instance::Instance() :
-	m_should_bake_fonts(true)
+	m_should_bake_fonts(true),
+	m_debugStyle(),
+	m_debugStyleActive(false)
 {
 	// TODO: clang-format doesn't like list initializers inside function calls
 	// clang-format off
@@ -158,6 +204,24 @@ Instance::Instance() :
 
 	// ensure the tooltip font exists
 	GetFont("pionillium", 14);
+
+	StyleColorsDarkPlus(m_debugStyle);
+}
+
+void Instance::SetDebugStyle()
+{
+	if (!m_debugStyleActive)
+		std::swap(m_debugStyle, ImGui::GetStyle());
+
+	m_debugStyleActive = true;
+}
+
+void Instance::SetNormalStyle()
+{
+	if (m_debugStyleActive)
+		std::swap(m_debugStyle, ImGui::GetStyle());
+
+	m_debugStyleActive = false;
 }
 
 ImFont *Instance::GetFont(const std::string &name, int size)

src/pigui/PiGui.h

@@ -97,6 +97,12 @@ namespace PiGui {
 		// Calls ImGui::EndFrame() internally and does book-keeping before rendering.
 		void Render();
 
+		// Sets the ImGui Style object to use the predefined development tooling style
+		void SetDebugStyle();
+
+		// Sets the ImGui Style object to use the game UI style object as modified by Lua
+		void SetNormalStyle();
+
 		ImFont *AddFont(const std::string &name, int size);
 		ImFont *GetFont(const std::string &name, int size);
 
@@ -116,6 +122,9 @@ namespace PiGui {
 
 		std::map<std::string, PiFont> m_font_definitions;
 
+		ImGuiStyle m_debugStyle;
+		bool m_debugStyleActive;
+
 		void BakeFonts();
 		void BakeFont(PiFont &font);
 		void AddFontDefinition(const PiFont &font) { m_font_definitions[font.name()] = font; }