The open source OpenXR runtime
t/gui: Add imgui code
authored by
Jakob Bornecrantz
and committed by
Jakob Bornecrantz
74bdb0cb
71b3de9c
+165
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src/xrt/targets/gui/CMakeLists.txt
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src/xrt/targets/gui/CMakeLists.txt
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set(SOURCE_FILES
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gui_common.h
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gui_imgui.c
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gui_imgui.h
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gui_main.c
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gui_ogl.c
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gui_prober.c
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gui_sdl2.c
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../../../external/glad/gl.h
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../../../external/glad/gl.c
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../../../external/imgui/cimgui.cpp
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../../../external/imgui/cimgui.h
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../../../external/imgui/imconfig.h
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../../../external/imgui/imgui.cpp
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../../../external/imgui/imgui.h
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../../../external/imgui/imgui_demo.cpp
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../../../external/imgui/imgui_draw.cpp
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../../../external/imgui/imgui_impl_opengl3.cpp
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../../../external/imgui/imgui_impl_opengl3.h
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../../../external/imgui/imgui_impl_sdl.cpp
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../../../external/imgui/imgui_impl_sdl.h
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../../../external/imgui/imgui_internal.h
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../../../external/imgui/imgui_widgets.cpp
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../../../external/imgui/imstb_rectpack.h
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../../../external/imgui/imstb_textedit.h
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../../../external/imgui/imstb_truetype.h
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)
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add_executable(gui
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src/xrt/targets/gui/gui_common.h
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src/xrt/targets/gui/gui_common.h
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gui_sdl2_init(struct program *p);
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/*!
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* Loop until user request quit and show Imgui interface.
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*
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* @ingroup gui
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*/
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void
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gui_imgui_loop(struct program *p);
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/*!
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* Loop until quit signal has been received.
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*
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* @ingroup gui
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src/xrt/targets/gui/gui_imgui.c
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src/xrt/targets/gui/gui_imgui.c
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// Copyright 2019, Collabora, Ltd.
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// SPDX-License-Identifier: BSL-1.0
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/*!
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* @file
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* @brief Main entrypoint for the Monado GUI program.
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* @author Jakob Bornecrantz <jakob@collabora.com>
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* @ingroup gui
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*/
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#include "util/u_var.h"
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#include "util/u_time.h"
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#include "util/u_misc.h"
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#include "util/u_sink.h"
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#include "util/u_format.h"
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#include "xrt/xrt_prober.h"
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#include "gui_common.h"
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#include "gui_imgui.h"
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/*
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*
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* Structs and defines.
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*
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*/
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/*!
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* Internal gui state.
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*
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* @ingroup gui
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*/
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struct gui_imgui
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{
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bool show_demo_window;
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struct xrt_colour_rgb_f32 clear;
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};
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/*
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*
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* 'Exported' functions.
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*
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*/
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void
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gui_imgui_loop(struct program *p)
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{
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// Need to call this before any other Imgui call.
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igCreateContext(NULL);
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// Local state
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ImGuiIO *io = igGetIO();
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// Setup Platform/Renderer bindings
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igImGui_ImplSDL2_InitForOpenGL(p->win, p->ctx);
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igImGui_ImplOpenGL3_Init(NULL);
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// Setup Dear ImGui style
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igStyleColorsDark(NULL);
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// Main loop
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struct gui_imgui gui = {0};
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gui.clear.r = 0.45f;
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gui.clear.g = 0.55f;
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gui.clear.b = 0.60f;
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u_var_add_root(&gui, "GUI Control", false);
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u_var_add_rgb_f32(&gui, &gui.clear, "Clear Colour");
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u_var_add_bool(&gui, &gui.show_demo_window, "Demo Window");
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u_var_add_bool(&gui, &p->stopped, "Exit");
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while (!p->stopped) {
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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igImGui_ImplSDL2_ProcessEvent(&event);
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if (event.type == SDL_QUIT) {
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p->stopped = true;
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}
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if (event.type == SDL_WINDOWEVENT &&
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event.window.event == SDL_WINDOWEVENT_CLOSE &&
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event.window.windowID == SDL_GetWindowID(p->win)) {
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p->stopped = true;
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}
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}
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// Start the Dear ImGui frame
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igImGui_ImplOpenGL3_NewFrame();
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igImGui_ImplSDL2_NewFrame(p->win);
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// Start new frame.
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igNewFrame();
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// Render the scene into it.
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gui_scene_manager_render(p);
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// Handle this here.
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if (gui.show_demo_window) {
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igShowDemoWindow(&gui.show_demo_window);
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}
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// Build the DrawData (EndFrame).
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igRender();
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// Clear the background.
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glViewport(0, 0, (int)io->DisplaySize.x,
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(int)io->DisplaySize.y);
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glClearColor(gui.clear.r, gui.clear.g, gui.clear.b, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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igImGui_ImplOpenGL3_RenderDrawData(igGetDrawData());
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SDL_GL_SwapWindow(p->win);
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gui_prober_update(p);
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}
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// Cleanup
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u_var_remove_root(&gui);
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igImGui_ImplOpenGL3_Shutdown();
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igImGui_ImplSDL2_Shutdown();
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igDestroyContext(NULL);
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}
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src/xrt/targets/gui/gui_imgui.h
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src/xrt/targets/gui/gui_imgui.h
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// Copyright 2019, Collabora, Ltd.
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// SPDX-License-Identifier: BSL-1.0
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/*!
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* @file
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* @brief Imgui integration for gui.
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* @author Jakob Bornecrantz <jakob@collabora.com>
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* @ingroup gui
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*/
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#pragma once
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#define CIMGUI_DEFINE_ENUMS_AND_STRUCTS
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#include "imgui/cimgui.h"
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#include "glad/gl.h"