Export netimgui files in MuJoCo Copybara configuration for use with the upcoming Web Viewer
PiperOrigin-RevId: 954769526 Change-Id: I4cdee083082f7d55c2babd5e664ec0283a2aaf63
This commit is contained in:
Matija Kecman
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Copybara-Service
Copybara-Service
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c7b6e0b8dd
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ca5337161d
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// Adapted for Google: removed NETIMGUI_IMPLEMENTATION (sources compiled
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// separately), updated include paths for third_party layout.
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//=================================================================================================
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// SAMPLE NO BACKEND
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//-------------------------------------------------------------------------------------------------
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// Demonstration of using Dear ImGui without any Backend support.
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// This way, user can use DearImgui without any code needed for drawing / input
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// management, since it is all handled by the NetImgui remote server instead.
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// Useful when this code is running on hardward without any display and/or
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// convenient input.
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//
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// Because we are not using any Backend code, this Sample is a little bit
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// different from the others. All of its code is included in this file (except
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// for Dear ImGui sources) and does not rely on some shared sample source file.
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//
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// This sample compile both 'Dear Imgui' and 'NetImgui' sources directly
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// (not using their project version in the solution)
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//
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// NOTE: This sample is also use in backward compatibility test with
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// older Dear ImGui versions,
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// making it easier to compile Dear Imgui without any OS
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//specific code (Backends)
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//
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// NOTE: This is also an excellent example of own little is needed to add
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// NetImgui support
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// to a project. It doesn't handle Font DPI regeneration,
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//keeping things simple.
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//=================================================================================================
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#include <stdio.h>
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#include <chrono>
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#include <thread>
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#include "NetImgui_Api.h"
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#include "Source/Fonts/Roboto_Medium.cpp"
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namespace SampleNoBackend {
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enum eSampleState : uint8_t {
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Start,
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Disconnected,
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Connected,
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};
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//=================================================================================================
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// Initialize the Dear Imgui Context and the NetImgui library
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//=================================================================================================
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bool Client_Startup() {
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO();
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io.BackendFlags |=
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ImGuiBackendFlags_HasGamepad; // Enable NetImgui Gamepad support
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io.DisplaySize = ImVec2(8, 8);
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ImFontConfig FontConfig = {};
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const char FontName[] = "Roboto Medium";
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memcpy(FontConfig.Name, FontName, sizeof(FontName));
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io.Fonts->AddFontFromMemoryCompressedTTF(Roboto_Medium_compressed_data,
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Roboto_Medium_compressed_size, 16.f,
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&FontConfig);
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#if !NETIMGUI_IMGUI_TEXTURES_ENABLED
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io.Fonts->Build();
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io.Fonts->SetTexID(0);
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#endif
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ImGui::StyleColorsDark();
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if (!NetImgui::Startup()) return false;
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return true;
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}
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//=================================================================================================
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// Release resources
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//=================================================================================================
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void Client_Shutdown() {
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NetImgui::Shutdown();
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ImGui::DestroyContext(ImGui::GetCurrentContext());
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}
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//=================================================================================================
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// Manage connection to NetImguiServer
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//=================================================================================================
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void Client_Connect(eSampleState& sampleState) {
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constexpr char zClientName[] = "SampleNoBackend (ImGui " IMGUI_VERSION ")";
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if (sampleState == eSampleState::Start) {
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printf("- Connecting to NetImguiServer to (127.0.0.1:%i)... ",
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NetImgui::kDefaultServerPort);
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NetImgui::ConnectToApp(zClientName, "localhost");
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while (NetImgui::IsConnectionPending());
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bool bSuccess = NetImgui::IsConnected();
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sampleState =
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bSuccess ? eSampleState::Connected : eSampleState::Disconnected;
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printf(bSuccess ? "Success\n" : "Failed\n");
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if (!bSuccess) {
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printf("- Waiting for a connection from NetImguiServer on port %i... ",
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NetImgui::kDefaultClientPort);
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NetImgui::ConnectFromApp(zClientName);
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}
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} else if (sampleState == eSampleState::Disconnected &&
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NetImgui::IsConnected()) {
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sampleState = eSampleState::Connected;
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printf("CONNECTED\n");
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} else if (sampleState == eSampleState::Connected &&
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!NetImgui::IsConnected()) {
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sampleState = eSampleState::Disconnected;
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printf("DISCONNECTED\n");
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printf("- Waiting for a connection from NetImguiServer on port %i... ",
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NetImgui::kDefaultClientPort);
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NetImgui::ConnectFromApp(zClientName);
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}
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}
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//=================================================================================================
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// Render all of our Dear ImGui Content (when appropriate)
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//=================================================================================================
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void Client_Draw(bool& bQuit) {
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if (NetImgui::IsConnected() && NetImgui::NewFrame(true)) {
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ImGui::ShowDemoWindow();
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ImGui::SetNextWindowPos(ImVec2(32, 48), ImGuiCond_Once);
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ImGui::SetNextWindowSize(ImVec2(400, 400), ImGuiCond_Once);
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if (ImGui::Begin("Sample No Backend", nullptr)) {
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ImGui::TextColored(ImVec4(0.1, 1, 0.1, 1), "Client:");
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ImGui::TextUnformatted(" DearImgui Version: " IMGUI_VERSION);
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ImGui::TextUnformatted(" NetImgui Version: " NETIMGUI_VERSION);
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ImGui::TextUnformatted("");
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ImGui::SameLine();
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bQuit = ImGui::Button(" Quit ");
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if (ImGui::IsItemHovered()) ImGui::SetTooltip("Terminate this sample.");
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ImGui::NewLine();
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ImGui::TextColored(ImVec4(0.1, 1, 0.1, 1), "Description:");
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ImGui::TextWrapped(
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"This sample demonstate the ability to use Dear ImGui without any "
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"Backend. "
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"Rely instead on NetImgui to remotely handle drawing and inputs. "
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"This avoids the need for rendering/input/window management code on "
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"the client itself.");
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}
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ImGui::End();
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NetImgui::EndFrame();
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}
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}
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} // namespace SampleNoBackend
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int main(int, char**) {
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printf(
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"========================================================================"
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"========\n");
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printf(" NetImgui Sample: No Backend\n");
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printf(
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"========================================================================"
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"========\n");
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printf(
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" Demonstrate 'Dear ImGui' + 'NetImgui' for a UI displayed on a remote "
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"server.\n");
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printf(" Dear ImGui : " IMGUI_VERSION "\n");
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printf(" NetImgui : " NETIMGUI_VERSION "\n");
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printf(" ['Ctrl + C' to quit]\n");
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printf(
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"------------------------------------------------------------------------"
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"--------\n");
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if (!SampleNoBackend::Client_Startup()) {
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printf("Failed initializing NetImgui.");
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SampleNoBackend::Client_Shutdown();
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return -1;
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}
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// Main loop
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bool bQuit = false;
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SampleNoBackend::eSampleState sampleState =
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SampleNoBackend::eSampleState::Start;
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while (!bQuit) {
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// Avoids high CPU/GPU usage by releasing this thread until enough time has
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// passed
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static auto sLastTime = std::chrono::steady_clock::now();
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std::chrono::duration<float> elapsedSec =
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std::chrono::steady_clock::now() - sLastTime;
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if (elapsedSec.count() < 1.f / 120.f) {
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std::this_thread::sleep_for(std::chrono::microseconds(250));
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continue;
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}
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sLastTime = std::chrono::steady_clock::now();
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// Sample Update
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SampleNoBackend::Client_Connect(sampleState);
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SampleNoBackend::Client_Draw(bQuit);
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}
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// Cleanup
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SampleNoBackend::Client_Shutdown();
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return 0;
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}
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