mirror of
https://github.com/Drezil/imgui.git
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fbaf65b8f6
This reverts commit f2c7f3b200
.
269 lines
11 KiB
C++
269 lines
11 KiB
C++
// dear imgui: standalone example application for DirectX 9
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// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
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#include "imgui.h"
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#include "imgui_impl_dx9.h"
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#include "imgui_impl_win32.h"
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#include <d3d9.h>
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#define DIRECTINPUT_VERSION 0x0800
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#include <dinput.h>
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#include <tchar.h>
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// Data
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static LPDIRECT3D9 g_pD3D = NULL;
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static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
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static D3DPRESENT_PARAMETERS g_d3dpp = {};
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// Forward declarations of helper functions
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bool CreateDeviceD3D(HWND hWnd);
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void CleanupDeviceD3D();
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void ResetDevice();
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LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
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// Main code
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int main(int, char**)
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{
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ImGui_ImplWin32_EnableDpiAwareness();
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// Create application window
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WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
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::RegisterClassEx(&wc);
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HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX9 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
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// Initialize Direct3D
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if (!CreateDeviceD3D(hwnd))
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{
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CleanupDeviceD3D();
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::UnregisterClass(wc.lpszClassName, wc.hInstance);
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return 1;
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}
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// Show the window
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::ShowWindow(hwnd, SW_SHOWDEFAULT);
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::UpdateWindow(hwnd);
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// Setup Dear ImGui context
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO(); (void)io;
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io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
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//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
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io.ConfigFlags |= ImGuiConfigFlags_DockingEnable; // Enable Docking
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io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport / Platform Windows
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//io.ConfigViewportsNoAutoMerge = true;
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//io.ConfigViewportsNoTaskBarIcon = true;
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// Setup Dear ImGui style
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ImGui::StyleColorsDark();
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//ImGui::StyleColorsClassic();
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// When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
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ImGuiStyle& style = ImGui::GetStyle();
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if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
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{
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style.WindowRounding = 0.0f;
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style.Colors[ImGuiCol_WindowBg].w = 1.0f;
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}
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// Setup Platform/Renderer bindings
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ImGui_ImplWin32_Init(hwnd);
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ImGui_ImplDX9_Init(g_pd3dDevice);
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// Load Fonts
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// - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
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// - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
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// - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
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// - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
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// - Read 'docs/FONTS.txt' for more instructions and details.
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// - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
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//io.Fonts->AddFontDefault();
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//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
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//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
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//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
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//io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
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//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
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//IM_ASSERT(font != NULL);
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// Our state
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bool show_demo_window = true;
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bool show_another_window = false;
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ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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// Main loop
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MSG msg;
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ZeroMemory(&msg, sizeof(msg));
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while (msg.message != WM_QUIT)
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{
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// Poll and handle messages (inputs, window resize, etc.)
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// You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
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// - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
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// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
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// Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
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if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
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{
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::TranslateMessage(&msg);
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::DispatchMessage(&msg);
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continue;
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}
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// Start the Dear ImGui frame
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ImGui_ImplDX9_NewFrame();
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ImGui_ImplWin32_NewFrame();
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ImGui::NewFrame();
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// 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
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if (show_demo_window)
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ImGui::ShowDemoWindow(&show_demo_window);
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// 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
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{
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static float f = 0.0f;
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static int counter = 0;
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ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
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ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
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ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
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ImGui::Checkbox("Another Window", &show_another_window);
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
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ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
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if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
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counter++;
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ImGui::SameLine();
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ImGui::Text("counter = %d", counter);
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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ImGui::End();
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}
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// 3. Show another simple window.
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if (show_another_window)
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{
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ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
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ImGui::Text("Hello from another window!");
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if (ImGui::Button("Close Me"))
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show_another_window = false;
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ImGui::End();
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}
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// Rendering
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ImGui::EndFrame();
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g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, FALSE);
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g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, FALSE);
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g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, FALSE);
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D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_color.x*255.0f), (int)(clear_color.y*255.0f), (int)(clear_color.z*255.0f), (int)(clear_color.w*255.0f));
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g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
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if (g_pd3dDevice->BeginScene() >= 0)
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{
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ImGui::Render();
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ImGui_ImplDX9_RenderDrawData(ImGui::GetDrawData());
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g_pd3dDevice->EndScene();
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}
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// Update and Render additional Platform Windows
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if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
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{
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ImGui::UpdatePlatformWindows();
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ImGui::RenderPlatformWindowsDefault();
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}
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HRESULT result = g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
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// Handle loss of D3D9 device
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if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
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ResetDevice();
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}
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ImGui_ImplDX9_Shutdown();
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ImGui_ImplWin32_Shutdown();
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ImGui::DestroyContext();
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CleanupDeviceD3D();
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::DestroyWindow(hwnd);
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::UnregisterClass(wc.lpszClassName, wc.hInstance);
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return 0;
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}
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// Helper functions
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bool CreateDeviceD3D(HWND hWnd)
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{
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if ((g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
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return false;
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// Create the D3DDevice
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ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
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g_d3dpp.Windowed = TRUE;
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g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
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g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
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g_d3dpp.EnableAutoDepthStencil = TRUE;
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g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
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g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE; // Present with vsync
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//g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Present without vsync, maximum unthrottled framerate
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if (g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
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return false;
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return true;
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}
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void CleanupDeviceD3D()
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{
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if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
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if (g_pD3D) { g_pD3D->Release(); g_pD3D = NULL; }
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}
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void ResetDevice()
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{
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ImGui_ImplDX9_InvalidateDeviceObjects();
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HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
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if (hr == D3DERR_INVALIDCALL)
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IM_ASSERT(0);
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ImGui_ImplDX9_CreateDeviceObjects();
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}
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#ifndef WM_DPICHANGED
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#define WM_DPICHANGED 0x02E0 // From Windows SDK 8.1+ headers
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#endif
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// Forward declare message handler from imgui_impl_win32.cpp
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extern IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
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// Win32 message handler
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LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
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return true;
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switch (msg)
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{
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case WM_SIZE:
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if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
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{
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g_d3dpp.BackBufferWidth = LOWORD(lParam);
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g_d3dpp.BackBufferHeight = HIWORD(lParam);
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ResetDevice();
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}
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return 0;
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case WM_SYSCOMMAND:
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if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
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return 0;
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break;
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case WM_DESTROY:
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::PostQuitMessage(0);
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return 0;
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case WM_DPICHANGED:
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if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_DpiEnableScaleViewports)
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{
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//const int dpi = HIWORD(wParam);
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//printf("WM_DPICHANGED to %d (%.0f%%)\n", dpi, (float)dpi / 96.0f * 100.0f);
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const RECT* suggested_rect = (RECT*)lParam;
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::SetWindowPos(hWnd, NULL, suggested_rect->left, suggested_rect->top, suggested_rect->right - suggested_rect->left, suggested_rect->bottom - suggested_rect->top, SWP_NOZORDER | SWP_NOACTIVATE);
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}
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break;
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}
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return ::DefWindowProc(hWnd, msg, wParam, lParam);
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}
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