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diff --git a/src/imgui/examples/example_allegro5/README.md b/src/imgui/examples/example_allegro5/README.md new file mode 100644 index 0000000..4af31f6 --- /dev/null +++ b/src/imgui/examples/example_allegro5/README.md @@ -0,0 +1,36 @@ + +# Configuration + +Dear ImGui outputs 16-bit vertex indices by default. +Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile dear imgui with 32-bit indices. +You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename. +We are providing `imconfig_allegro5.h` that enables 32-bit indices. +Note that the backend supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion. + +# How to Build + +### On Ubuntu 14.04+ and macOS + +```bash +g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. -I ../../backends main.cpp ../../backends/imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_main -lallegro_primitives -o allegro5_example +``` + +On macOS, install Allegro with homebrew: `brew install allegro`. + +### On Windows with Visual Studio's CLI + +You may install Allegro using vcpkg: +``` +git clone https://github.com/Microsoft/vcpkg +cd vcpkg +bootstrap-vcpkg.bat +vcpkg install allegro5 --triplet=x86-windows ; for win32 +vcpkg install allegro5 --triplet=x64-windows ; for win64 +vcpkg integrate install ; register include / libs in Visual Studio +``` + +Build: +``` +set ALLEGRODIR=path_to_your_allegro5_folder +cl /Zi /MD /utf-8 /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" /I .. /I ..\.. /I ..\..\backends main.cpp ..\..\backends\imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib +``` diff --git a/src/imgui/examples/example_allegro5/example_allegro5.vcxproj 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\ No newline at end of file diff --git a/src/imgui/examples/example_allegro5/imconfig_allegro5.h b/src/imgui/examples/example_allegro5/imconfig_allegro5.h new file mode 100644 index 0000000..35afa67 --- /dev/null +++ b/src/imgui/examples/example_allegro5/imconfig_allegro5.h @@ -0,0 +1,11 @@ +//----------------------------------------------------------------------------- +// COMPILE-TIME OPTIONS FOR DEAR IMGUI ALLEGRO 5 EXAMPLE +// See imconfig.h for the full template +// Because Allegro doesn't support 16-bit vertex indices, we enable the compile-time option of imgui to use 32-bit indices +//----------------------------------------------------------------------------- + +#pragma once + +// Use 32-bit vertex indices because Allegro doesn't support 16-bit ones +// This allows us to avoid converting vertices format at runtime +#define ImDrawIdx int diff --git a/src/imgui/examples/example_allegro5/main.cpp b/src/imgui/examples/example_allegro5/main.cpp new file mode 100644 index 0000000..3ca061c --- /dev/null +++ b/src/imgui/examples/example_allegro5/main.cpp @@ -0,0 +1,149 @@ +// Dear ImGui: standalone example application for Allegro 5 + +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +// On Windows, you can install Allegro5 using vcpkg: +// git clone https://github.com/Microsoft/vcpkg +// cd vcpkg +// bootstrap - vcpkg.bat +// vcpkg install allegro5 --triplet=x86-windows ; for win32 +// vcpkg install allegro5 --triplet=x64-windows ; for win64 +// vcpkg integrate install ; register include and libs in Visual Studio + +#include <stdint.h> +#include <allegro5/allegro.h> +#include <allegro5/allegro_primitives.h> +#include "imgui.h" +#include "imgui_impl_allegro5.h" + +int main(int, char**) +{ + // Setup Allegro + al_init(); + al_install_keyboard(); + al_install_mouse(); + al_init_primitives_addon(); + al_set_new_display_flags(ALLEGRO_RESIZABLE); + ALLEGRO_DISPLAY* display = al_create_display(1280, 720); + al_set_window_title(display, "Dear ImGui Allegro 5 example"); + ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue(); + al_register_event_source(queue, al_get_display_event_source(display)); + al_register_event_source(queue, al_get_keyboard_event_source()); + al_register_event_source(queue, al_get_mouse_event_source()); + + // Setup Dear ImGui context + IMGUI_CHECKVERSION(); + ImGui::CreateContext(); + ImGuiIO& io = ImGui::GetIO(); (void)io; + io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls + + // Setup Dear ImGui style + ImGui::StyleColorsDark(); + //ImGui::StyleColorsLight(); + + // Setup Platform/Renderer backends + ImGui_ImplAllegro5_Init(display); + + // Load Fonts + // - 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. + // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. + // - If the file cannot be loaded, the function will return a nullptr. Please handle those errors in your application (e.g. use an assertion, or display an error and quit). + // - 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. + // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype for higher quality font rendering. + // - Read 'docs/FONTS.md' for more instructions and details. + // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ ! + //io.Fonts->AddFontDefault(); + //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f); + //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f); + //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese()); + //IM_ASSERT(font != nullptr); + + bool show_demo_window = true; + bool show_another_window = false; + ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); + + // Main loop + bool running = true; + while (running) + { + // Poll and handle events (inputs, window resize, etc.) + // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs. + // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data. + // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data. + // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags. + ALLEGRO_EVENT ev; + while (al_get_next_event(queue, &ev)) + { + ImGui_ImplAllegro5_ProcessEvent(&ev); + if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) + running = false; + if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE) + { + ImGui_ImplAllegro5_InvalidateDeviceObjects(); + al_acknowledge_resize(display); + ImGui_ImplAllegro5_CreateDeviceObjects(); + } + } + + // Start the Dear ImGui frame + ImGui_ImplAllegro5_NewFrame(); + ImGui::NewFrame(); + + // 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!). + if (show_demo_window) + ImGui::ShowDemoWindow(&show_demo_window); + + // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window. + { + static float f = 0.0f; + static int counter = 0; + + ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it. + + ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too) + ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state + ImGui::Checkbox("Another Window", &show_another_window); + + ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f + ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color + + if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated) + counter++; + ImGui::SameLine(); + ImGui::Text("counter = %d", counter); + + ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate); + ImGui::End(); + } + + // 3. Show another simple window. + if (show_another_window) + { + 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) + ImGui::Text("Hello from another window!"); + if (ImGui::Button("Close Me")) + show_another_window = false; + ImGui::End(); + } + + // Rendering + ImGui::Render(); + al_clear_to_color(al_map_rgba_f(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w)); + ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData()); + al_flip_display(); + } + + // Cleanup + ImGui_ImplAllegro5_Shutdown(); + ImGui::DestroyContext(); + al_destroy_event_queue(queue); + al_destroy_display(display); + + return 0; +} |