mirror of
https://github.com/Drezil/imgui.git
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Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
This commit is contained in:
omar
parent
bdb3d72d37
commit
a1b6766d43
@ -79,6 +79,7 @@ Other Changes:
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- Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
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- Examples: Win32: Fixed handling of mouse wheel messages to support finer position messages (typically sent by track-pads). (#1874) [zx64]
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- Examples: Allegro5: Added support for ImGuiConfigFlags_NoMouseCursorChange flag.
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- Examples: FreeGLUT: Added FreeGLUT bindings. Added FreeGLUT+OpenGL2 example. (#801)
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- Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
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- Internals: PushItemFlag() flags are inherited by BeginChild().
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@ -106,23 +106,24 @@ Most the example bindings are split in 2 parts:
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improvements and fixes related to viewports and platform windows without extra work on your side.
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See 'ImGuiPlatformIO' for details.
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List of officially maintained Platforms Bindings:
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List of Platforms Bindings in this repository:
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imgui_impl_glfw.cpp
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imgui_impl_sdl.cpp
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imgui_impl_win32.cpp
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imgui_impl_glfw.cpp ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
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imgui_impl_sdl.cpp ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
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imgui_impl_win32.cpp ; Windows native API (Windows)
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imgui_impl_freeglut.cpp ; FreeGLUT (if you really miss the 90's)
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List of officially maintained Renderer Bindings:
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List of Renderer Bindings in this repository:
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imgui_impl_dx9.cpp
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imgui_impl_dx10.cpp
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imgui_impl_dx11.cpp
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imgui_impl_dx12.cpp
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imgui_impl_opengl2.cpp
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imgui_impl_opengl3.cpp
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imgui_impl_vulkan.cpp
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imgui_impl_dx9.cpp ; DirectX9
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imgui_impl_dx10.cpp ; DirectX10
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imgui_impl_dx11.cpp ; DirectX11
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imgui_impl_dx12.cpp ; DirectX12
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imgui_impl_opengl2.cpp ; OpenGL2 (legacy, fixed pipeline)
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imgui_impl_opengl3.cpp ; OpenGL3 (modern programmable pipeline)
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imgui_impl_vulkan.cpp ; Vulkan
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List of officially maintained high-level Frameworks Bindings (combine Platform + Renderer)
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List of high-level Frameworks Bindings in this repository: (combine Platform + Renderer)
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imgui_impl_allegro5.cpp
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imgui_impl_marmalade.cpp
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@ -132,7 +133,7 @@ Third-party framework, graphics API and languages bindings:
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https://github.com/ocornut/imgui/wiki/Links
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Languages: C, C#, ChaiScript, D, Go, Haxe, Java, Lua, Odin, Pascal, PureBasic, Python, Rust, Swift...
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Frameworks: FreeGlut, Cinder, Cocos2d-x, Emscripten, SFML, GML/GameMaker Studio, Irrlicht, Ogre,
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Frameworks: Cinder, Cocos2d-x, Emscripten, SFML, GML/GameMaker Studio, Irrlicht, Ogre,
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OpenSceneGraph, openFrameworks, LOVE, NanoRT, Nim Game Lib, Qt3d, SFML, Unreal Engine 4...
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Miscellaneous: Software Renderer, RemoteImgui, etc.
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@ -0,0 +1,174 @@
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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup Label="ProjectConfigurations">
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<ProjectConfiguration Include="Debug|Win32">
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<Configuration>Debug</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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||||
<ProjectConfiguration Include="Debug|x64">
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<Configuration>Debug</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|x64">
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<Configuration>Release</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<ProjectGuid>{F90D0333-5FB1-440D-918D-DD39A1B5187E}</ProjectGuid>
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<RootNamespace>example_freeglut_opengl2</RootNamespace>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<CharacterSet>MultiByte</CharacterSet>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<PropertyGroup Label="UserMacros" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<IncludePath>$(IncludePath)</IncludePath>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
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<IncludePath>$(IncludePath)</IncludePath>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
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<IncludePath>$(IncludePath)</IncludePath>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<OutDir>$(ProjectDir)$(Configuration)\</OutDir>
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<IntDir>$(ProjectDir)$(Configuration)\</IntDir>
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<IncludePath>$(IncludePath)</IncludePath>
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</PropertyGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<WarningLevel>Level4</WarningLevel>
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<Optimization>Disabled</Optimization>
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<AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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</ClCompile>
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<Link>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
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<AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<SubSystem>Console</SubSystem>
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<IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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<ClCompile>
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<WarningLevel>Level4</WarningLevel>
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<Optimization>Disabled</Optimization>
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<AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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</ClCompile>
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<Link>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
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<AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<SubSystem>Console</SubSystem>
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<IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level4</WarningLevel>
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<Optimization>MaxSpeed</Optimization>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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||||
<IntrinsicFunctions>true</IntrinsicFunctions>
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<AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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<BufferSecurityCheck>false</BufferSecurityCheck>
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</ClCompile>
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<Link>
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||||
<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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<AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
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<AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<SubSystem>Console</SubSystem>
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<IgnoreSpecificDefaultLibraries>
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</IgnoreSpecificDefaultLibraries>
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</Link>
|
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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<ClCompile>
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||||
<WarningLevel>Level4</WarningLevel>
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<Optimization>MaxSpeed</Optimization>
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||||
<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
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<BufferSecurityCheck>false</BufferSecurityCheck>
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</ClCompile>
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||||
<Link>
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||||
<GenerateDebugInformation>true</GenerateDebugInformation>
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||||
<EnableCOMDATFolding>true</EnableCOMDATFolding>
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||||
<OptimizeReferences>true</OptimizeReferences>
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||||
<AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
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<AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
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<SubSystem>Console</SubSystem>
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||||
<IgnoreSpecificDefaultLibraries>
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||||
</IgnoreSpecificDefaultLibraries>
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</Link>
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||||
</ItemDefinitionGroup>
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<ItemGroup>
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<ClCompile Include="..\..\imgui.cpp" />
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<ClCompile Include="..\..\imgui_demo.cpp" />
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<ClCompile Include="..\..\imgui_draw.cpp" />
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<ClCompile Include="..\imgui_impl_freeglut.cpp" />
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<ClCompile Include="..\imgui_impl_opengl2.cpp" />
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<ClCompile Include="main.cpp" />
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</ItemGroup>
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<ItemGroup>
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<ClInclude Include="..\..\imconfig.h" />
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<ClInclude Include="..\..\imgui.h" />
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<ClInclude Include="..\..\imgui_internal.h" />
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<ClInclude Include="..\imgui_impl_freeglut.h" />
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<ClInclude Include="..\imgui_impl_opengl2.h" />
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</ItemGroup>
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<ItemGroup>
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<None Include="..\..\misc\natvis\imgui.natvis" />
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<None Include="..\README.txt" />
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||||
</ItemGroup>
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||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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||||
</ImportGroup>
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</Project>
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@ -0,0 +1,55 @@
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup>
|
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<Filter Include="imgui">
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||||
<UniqueIdentifier>{c336cfe3-f0c4-464c-9ef0-a9e17a7ff222}</UniqueIdentifier>
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<Filter Include="sources">
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<UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
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<Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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<ItemGroup>
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<ClCompile Include="main.cpp">
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||||
<Filter>sources</Filter>
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||||
</ClCompile>
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||||
<ClCompile Include="..\..\imgui.cpp">
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<Filter>imgui</Filter>
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</ClCompile>
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<ClCompile Include="..\..\imgui_demo.cpp">
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<Filter>imgui</Filter>
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||||
</ClCompile>
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||||
<ClCompile Include="..\..\imgui_draw.cpp">
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||||
<Filter>imgui</Filter>
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||||
</ClCompile>
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||||
<ClCompile Include="..\imgui_impl_freeglut.cpp">
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||||
<Filter>sources</Filter>
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||||
</ClCompile>
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||||
<ClCompile Include="..\imgui_impl_opengl2.cpp">
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||||
<Filter>sources</Filter>
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||||
</ClCompile>
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||||
</ItemGroup>
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||||
<ItemGroup>
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<ClInclude Include="..\..\imconfig.h">
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<Filter>imgui</Filter>
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</ClInclude>
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||||
<ClInclude Include="..\..\imgui.h">
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<Filter>imgui</Filter>
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</ClInclude>
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<ClInclude Include="..\..\imgui_internal.h">
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<Filter>imgui</Filter>
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</ClInclude>
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||||
<ClInclude Include="..\imgui_impl_freeglut.h">
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||||
<Filter>sources</Filter>
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||||
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||||
<ClInclude Include="..\imgui_impl_opengl2.h">
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<Filter>sources</Filter>
|
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|
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<ItemGroup>
|
||||
<None Include="..\README.txt" />
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||||
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|
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|
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||||
133
examples/example_freeglut_opengl2/main.cpp
Normal file
133
examples/example_freeglut_opengl2/main.cpp
Normal file
@ -0,0 +1,133 @@
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// ImGui - standalone example application for FreeGLUT + OpenGL2, using legacy fixed pipeline
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// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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// (Using GLUT or FreeGLUT is not recommended unless you really miss the 90's)
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#include "imgui.h"
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#include "../imgui_impl_freeglut.h"
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#include "../imgui_impl_opengl2.h"
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#include <GL/freeglut.h>
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#ifdef _MSC_VER
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#pragma warning (disable: 4505) // unreferenced local function has been removed
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#endif
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static bool show_demo_window = true;
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static bool show_another_window = false;
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static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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void my_display_code()
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{
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// 1. Show a simple window.
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// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
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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::Text("Hello, world!"); // Display some text (you can use a format string too)
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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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ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our windows open/close state
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ImGui::Checkbox("Another Window", &show_another_window);
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if (ImGui::Button("Button")) // Buttons return true when clicked (NB: 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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}
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// 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
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if (show_another_window)
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{
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||||
ImGui::Begin("Another Window", &show_another_window);
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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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||||
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||||
// 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
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||||
if (show_demo_window)
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||||
{
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||||
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
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||||
ImGui::ShowDemoWindow(&show_demo_window);
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||||
}
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||||
}
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||||
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||||
void glut_display_func()
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{
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||||
ImGui_ImplOpenGL2_NewFrame();
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ImGui_ImplFreeGLUT_NewFrame();
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my_display_code();
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ImGui::Render();
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ImGuiIO& io = ImGui::GetIO();
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glViewport(0, 0, (GLsizei)io.DisplaySize.x, (GLsizei)io.DisplaySize.y);
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glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
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glClear(GL_COLOR_BUFFER_BIT);
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//glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound, but prefer using the GL3+ code.
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ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
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glutSwapBuffers();
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glutPostRedisplay();
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}
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||||
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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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||||
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||||
int main(int argc, char** argv)
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||||
{
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||||
// Create GLUT window
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||||
glutInit(&argc, argv);
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||||
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
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glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
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||||
glutInitWindowSize(1280, 720);
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glutCreateWindow("ImGui FreeGLUT+OpenGL2 Example");
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||||
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||||
// Setup GLUT display function
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||||
// We will also call ImGui_ImplFreeGLUT_InstallFuncs() to get all the other functions installed for us,
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||||
// otherwise it is possible to install our own functions and call the imgui_impl_freeglut.h functions ourselves.
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||||
glutDisplayFunc(glut_display_func);
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||||
// Setup ImGui binding
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||||
ImGui::CreateContext();
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ImGuiIO& io = ImGui::GetIO(); (void)io;
|
||||
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
|
||||
|
||||
ImGui_ImplFreeGLUT_Init();
|
||||
ImGui_ImplFreeGLUT_InstallFuncs();
|
||||
ImGui_ImplOpenGL2_Init();
|
||||
|
||||
// Setup style
|
||||
ImGui::StyleColorsDark();
|
||||
//ImGui::StyleColorsClassic();
|
||||
|
||||
// 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 NULL. 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.
|
||||
// - Read 'misc/fonts/README.txt' 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("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
|
||||
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
|
||||
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
|
||||
//IM_ASSERT(font != NULL);
|
||||
|
||||
glutMainLoop();
|
||||
|
||||
// Cleanup
|
||||
ImGui_ImplOpenGL2_Shutdown();
|
||||
ImGui_ImplFreeGLUT_Shutdown();
|
||||
ImGui::DestroyContext();
|
||||
|
||||
return 0;
|
||||
}
|
||||
187
examples/imgui_impl_freeglut.cpp
Normal file
187
examples/imgui_impl_freeglut.cpp
Normal file
@ -0,0 +1,187 @@
|
||||
// ImGui Platform Binding for: FreeGLUT
|
||||
// This needs to be used along with a Renderer (e.g. OpenGL2)
|
||||
|
||||
// Issues:
|
||||
// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
|
||||
|
||||
// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
|
||||
// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
|
||||
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
|
||||
// https://github.com/ocornut/imgui
|
||||
|
||||
// CHANGELOG
|
||||
// (minor and older changes stripped away, please see git history for details)
|
||||
// 2018-03-22: Added FreeGLUT Platform binding.
|
||||
|
||||
#include "imgui.h"
|
||||
#include "imgui_impl_freeglut.h"
|
||||
#include <GL/freeglut.h>
|
||||
|
||||
#ifdef _MSC_VER
|
||||
#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
|
||||
#endif
|
||||
|
||||
static int g_Time = 0; // Current time, in milliseconds
|
||||
|
||||
bool ImGui_ImplFreeGLUT_Init()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
g_Time = 0;
|
||||
|
||||
// Glut has 1 function for characters and one for "special keys". We map the characters in the 0..255 range and the keys above.
|
||||
io.KeyMap[ImGuiKey_Tab] = '\t'; // == 9 == CTRL+I
|
||||
io.KeyMap[ImGuiKey_LeftArrow] = 256 + GLUT_KEY_LEFT;
|
||||
io.KeyMap[ImGuiKey_RightArrow] = 256 + GLUT_KEY_RIGHT;
|
||||
io.KeyMap[ImGuiKey_UpArrow] = 256 + GLUT_KEY_UP;
|
||||
io.KeyMap[ImGuiKey_DownArrow] = 256 + GLUT_KEY_DOWN;
|
||||
io.KeyMap[ImGuiKey_PageUp] = 256 + GLUT_KEY_PAGE_UP;
|
||||
io.KeyMap[ImGuiKey_PageDown] = 256 + GLUT_KEY_PAGE_DOWN;
|
||||
io.KeyMap[ImGuiKey_Home] = 256 + GLUT_KEY_HOME;
|
||||
io.KeyMap[ImGuiKey_End] = 256 + GLUT_KEY_END;
|
||||
io.KeyMap[ImGuiKey_Delete] = 127;
|
||||
io.KeyMap[ImGuiKey_Backspace] = 8; // == CTRL+H
|
||||
io.KeyMap[ImGuiKey_Enter] = 13; // == CTRL+M
|
||||
io.KeyMap[ImGuiKey_Escape] = 27;
|
||||
io.KeyMap[ImGuiKey_Insert] = 256 + GLUT_KEY_INSERT;
|
||||
io.KeyMap[ImGuiKey_A] = 'A';
|
||||
io.KeyMap[ImGuiKey_C] = 'C';
|
||||
io.KeyMap[ImGuiKey_V] = 'V';
|
||||
io.KeyMap[ImGuiKey_X] = 'X';
|
||||
io.KeyMap[ImGuiKey_Y] = 'Y';
|
||||
io.KeyMap[ImGuiKey_Z] = 'Z';
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_InstallFuncs()
|
||||
{
|
||||
glutReshapeFunc(ImGui_ImplFreeGLUT_ReshapeFunc);
|
||||
glutMotionFunc(ImGui_ImplFreeGLUT_MotionFunc);
|
||||
glutPassiveMotionFunc(ImGui_ImplFreeGLUT_MotionFunc);
|
||||
glutMouseFunc(ImGui_ImplFreeGLUT_MouseFunc);
|
||||
glutMouseWheelFunc(ImGui_ImplFreeGLUT_MouseWheelFunc);
|
||||
glutKeyboardFunc(ImGui_ImplFreeGLUT_KeyboardFunc);
|
||||
glutKeyboardUpFunc(ImGui_ImplFreeGLUT_KeyboardUpFunc);
|
||||
glutSpecialFunc(ImGui_ImplFreeGLUT_SpecialFunc);
|
||||
glutSpecialUpFunc(ImGui_ImplFreeGLUT_SpecialUpFunc);
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_Shutdown()
|
||||
{
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_NewFrame()
|
||||
{
|
||||
// Setup time step
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
int current_time = glutGet(GLUT_ELAPSED_TIME);
|
||||
io.DeltaTime = (current_time - g_Time) / 1000.0f;
|
||||
g_Time = current_time;
|
||||
|
||||
// Start the frame
|
||||
ImGui::NewFrame();
|
||||
}
|
||||
|
||||
static void ImGui_ImplFreeGLUT_UpdateKeyboardMods()
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
int mods = glutGetModifiers();
|
||||
io.KeyCtrl = (mods & GLUT_ACTIVE_CTRL) != 0;
|
||||
io.KeyShift = (mods & GLUT_ACTIVE_SHIFT) != 0;
|
||||
io.KeyAlt = (mods & GLUT_ACTIVE_ALT) != 0;
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_KeyboardFunc(unsigned char c, int x, int y)
|
||||
{
|
||||
// Send character to imgui
|
||||
//printf("char_down_func %d '%c'\n", c, c);
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (c >= 32)
|
||||
io.AddInputCharacter(c);
|
||||
|
||||
// Store letters in KeysDown[] array as both uppercase and lowercase + Handle GLUT translating CTRL+A..CTRL+Z as 1..26.
|
||||
// This is a hacky mess but GLUT is unable to distinguish e.g. a TAB key from CTRL+I so this is probably the best we can do here.
|
||||
if (c >= 1 && c <= 26)
|
||||
io.KeysDown[c] = io.KeysDown[c - 1 + 'a'] = io.KeysDown[c - 1 + 'A'] = true;
|
||||
else if (c >= 'a' && c <= 'z')
|
||||
io.KeysDown[c] = io.KeysDown[c - 'a' + 'A'] = true;
|
||||
else if (c >= 'A' && c <= 'Z')
|
||||
io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = true;
|
||||
else
|
||||
io.KeysDown[c] = true;
|
||||
ImGui_ImplFreeGLUT_UpdateKeyboardMods();
|
||||
(void)x; (void)y; // Unused
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
|
||||
{
|
||||
//printf("char_up_func %d '%c'\n", c, c);
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (c >= 1 && c <= 26)
|
||||
io.KeysDown[c] = io.KeysDown[c - 1 + 'a'] = io.KeysDown[c - 1 + 'A'] = false;
|
||||
else if (c >= 'a' && c <= 'z')
|
||||
io.KeysDown[c] = io.KeysDown[c - 'a' + 'A'] = false;
|
||||
else if (c >= 'A' && c <= 'Z')
|
||||
io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = false;
|
||||
else
|
||||
io.KeysDown[c] = false;
|
||||
ImGui_ImplFreeGLUT_UpdateKeyboardMods();
|
||||
(void)x; (void)y; // Unused
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_SpecialFunc(int key, int x, int y)
|
||||
{
|
||||
//printf("key_down_func %d\n", key);
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
|
||||
io.KeysDown[key + 256] = true;
|
||||
ImGui_ImplFreeGLUT_UpdateKeyboardMods();
|
||||
(void)x; (void)y; // Unused
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_SpecialUpFunc(int key, int x, int y)
|
||||
{
|
||||
//printf("key_up_func %d\n", key);
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
|
||||
io.KeysDown[key + 256] = false;
|
||||
ImGui_ImplFreeGLUT_UpdateKeyboardMods();
|
||||
(void)x; (void)y; // Unused
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_MouseFunc(int glut_button, int state, int x, int y)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.MousePos = ImVec2((float)x, (float)y);
|
||||
int button = -1;
|
||||
if (glut_button == GLUT_LEFT_BUTTON) button = 0;
|
||||
if (glut_button == GLUT_RIGHT_BUTTON) button = 1;
|
||||
if (glut_button == GLUT_MIDDLE_BUTTON) button = 2;
|
||||
if (button != -1 && state == GLUT_DOWN)
|
||||
io.MouseDown[button] = true;
|
||||
if (button != -1 && state == GLUT_UP)
|
||||
io.MouseDown[button] = false;
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_MouseWheelFunc(int button, int dir, int x, int y)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.MousePos = ImVec2((float)x, (float)y);
|
||||
if (dir > 0)
|
||||
io.MouseWheel += 1.0;
|
||||
else if (dir < 0)
|
||||
io.MouseWheel -= 1.0;
|
||||
(void)button; // Unused
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_ReshapeFunc(int w, int h)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.DisplaySize = ImVec2((float)w, (float)h);
|
||||
}
|
||||
|
||||
void ImGui_ImplFreeGLUT_MotionFunc(int x, int y)
|
||||
{
|
||||
ImGuiIO& io = ImGui::GetIO();
|
||||
io.MousePos = ImVec2((float)x, (float)y);
|
||||
}
|
||||
27
examples/imgui_impl_freeglut.h
Normal file
27
examples/imgui_impl_freeglut.h
Normal file
@ -0,0 +1,27 @@
|
||||
// ImGui Platform Binding for: FreeGLUT
|
||||
// This needs to be used along with a Renderer (e.g. OpenGL2)
|
||||
|
||||
// Issues:
|
||||
// [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
|
||||
|
||||
// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
|
||||
// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
|
||||
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
|
||||
// https://github.com/ocornut/imgui
|
||||
|
||||
IMGUI_API bool ImGui_ImplFreeGLUT_Init();
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_InstallFuncs();
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_Shutdown();
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_NewFrame();
|
||||
|
||||
// You can call ImGui_ImplFreeGLUT_InstallFuncs() to get all those functions installed automatically,
|
||||
// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency..
|
||||
//------------------------------------ GLUT name --------------------------------------------- Decent Name --------------
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_ReshapeFunc(int w, int h); // ~ ResizeFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_MotionFunc(int x, int y); // ~ MouseMoveFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_MouseFunc(int button, int state, int x, int y); // ~ MouseButtonFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_MouseWheelFunc(int button, int dir, int x, int y); // ~ MouseWheelFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_KeyboardFunc(unsigned char c, int x, int y); // ~ CharPressedFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_KeyboardUpFunc(unsigned char c, int x, int y); // ~ CharReleasedFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_SpecialFunc(int key, int x, int y); // ~ KeyPressedFunc
|
||||
IMGUI_API void ImGui_ImplFreeGLUT_SpecialUpFunc(int key, int x, int y); // ~ KeyReleasedFunc
|
||||
Loading…
Reference in New Issue
Block a user