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Replacing imgui to c homemade wrapper by cimgui #65

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2b35f3d
Replacing homemade imgui to c wrapper by cimgui
Aug 24, 2025
ceec00d
include header cimgui to module
Aug 26, 2025
ddb764d
backend impl api to extern c
Aug 27, 2025
1e9b501
cimgui passtrough + text function
Aug 27, 2025
a96c137
backends path to have just files
Aug 27, 2025
18eb01c
Doing 14% of gui.zig file with cimgui function
Aug 27, 2025
cf86157
Adding a bunch of functions
tonitch Aug 29, 2025
68684cf
List Clipper
tonitch Aug 29, 2025
441f4ab
Merge branch 'main' into cimgui
Sep 1, 2025
9bba464
0.15.1
Sep 1, 2025
f43a4d5
24% of the file
Sep 1, 2025
6232450
Query replace a bunch
Sep 1, 2025
7200e4a
Most function done
Sep 2, 2025
5d6b0bf
Is it finished ?
Sep 2, 2025
eb75b9a
removing zgui.cpp
Sep 3, 2025
9d5446b
Fixing references not working and test
Sep 5, 2025
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161 changes: 93 additions & 68 deletions build.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,7 @@ pub fn build(b: *std.Build) void {

const options_module = options_step.createModule();

_ = b.addModule("root", .{
const root = b.addModule("root", .{
.root_source_file = b.path("src/gui.zig"),
.imports = &.{
.{ .name = "zgui_options", .module = options_module },
Expand All @@ -85,6 +85,7 @@ pub fn build(b: *std.Build) void {
"-Wno-elaborated-enum-base",
"-Wno-error=date-time",
if (options.use_32bit_draw_idx) "-DIMGUI_USE_32BIT_DRAW_INDEX" else "",
"-DIMGUI_IMPL_API=extern \"C\" ",
};

const objcflags = &.{
Expand All @@ -93,62 +94,68 @@ pub fn build(b: *std.Build) void {
"-Wno-availability",
};

const imgui = b.addLibrary(.{
.name = "imgui",
.linkage = if (options.shared) .dynamic else .static,
.root_module = b.createModule(.{
.target = target,
.optimize = optimize,
}),
const imgui_dep = b.dependency("imgui", .{
.target = target,
.optimize = optimize,
});

imgui.root_module.addCMacro("IMGUI_DISABLE_OBSOLETE_FUNCTIONS", "");

if (options.shared) {
if (target.result.os.tag == .windows) {
imgui.root_module.addCMacro("IMGUI_API", "__declspec(dllexport)");
imgui.root_module.addCMacro("IMPLOT_API", "__declspec(dllexport)");
imgui.root_module.addCMacro("ZGUI_API", "__declspec(dllexport)");
}

if (target.result.os.tag == .macos) {
imgui.linker_allow_shlib_undefined = true;
}
}

b.installArtifact(imgui);

const emscripten = target.result.os.tag == .emscripten;

imgui.addIncludePath(b.path("libs"));
imgui.addIncludePath(b.path("libs/imgui"));

imgui.linkLibC();
if (target.result.abi != .msvc)
imgui.linkLibCpp();
const imgui_mod = b.addModule("imgui", .{
.target = target,
.optimize = optimize,
.link_libcpp = true,
});

imgui.addCSourceFile(.{
.file = b.path("src/zgui.cpp"),
.flags = cflags,
const imgui = b.addLibrary(.{
.name = "imgui",
.root_module = imgui_mod,
});

imgui.addCSourceFiles(.{
.root = imgui_dep.path(""),
.files = &.{
"libs/imgui/imgui.cpp",
"libs/imgui/imgui_widgets.cpp",
"libs/imgui/imgui_tables.cpp",
"libs/imgui/imgui_draw.cpp",
"libs/imgui/imgui_demo.cpp",
"imgui.cpp",
"imgui_widgets.cpp",
"imgui_tables.cpp",
"imgui_draw.cpp",
"imgui_demo.cpp",
},
.flags = cflags,
});
imgui.installHeadersDirectory(imgui_dep.path(""), "imgui", .{});

const cimgui_dep = b.dependency("cimgui", .{
.target = target,
.optimize = optimize,
});

const cimgui_mod = b.addModule("cimgui", .{
.target = target,
.optimize = optimize,
.link_libcpp = true,
});

const cimgui = b.addLibrary(.{
.name = "cimgui",
.root_module = cimgui_mod,
});

cimgui.linkLibrary(imgui);
cimgui.addCSourceFile(.{
.file = cimgui_dep.path("cimgui.cpp"),
});
cimgui.addIncludePath(cimgui_dep.path(""));
root.addIncludePath(cimgui_dep.path(""));

b.installArtifact(cimgui);
b.installArtifact(imgui);


if (options.with_freetype) {
if (b.lazyDependency("freetype", .{})) |freetype| {
imgui.linkLibrary(freetype.artifact("freetype"));
}
imgui.addCSourceFile(.{
.file = b.path("libs/imgui/misc/freetype/imgui_freetype.cpp"),
.file = imgui_dep.path("misc/freetype/imgui_freetype.cpp"),
.flags = cflags,
});
imgui.root_module.addCMacro("IMGUI_ENABLE_FREETYPE", "1");
Expand Down Expand Up @@ -225,6 +232,9 @@ pub fn build(b: *std.Build) void {
imgui.addCSourceFile(.{ .file = b.path("libs/imgui_test_engine/imgui_te_utils.cpp"), .flags = cflags });
}

const emscripten = target.result.os.tag == .emscripten;

imgui.addIncludePath(imgui_dep.path("")); //For backend to find imgui.h
switch (options.backend) {
.glfw_wgpu => {
if (emscripten) {
Expand All @@ -240,9 +250,10 @@ pub fn build(b: *std.Build) void {
}
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_glfw.cpp",
"libs/imgui/backends/imgui_impl_wgpu.cpp",
"imgui_impl_glfw.cpp",
"imgui_impl_wgpu.cpp",
},
.flags = cflags,
});
Expand All @@ -252,9 +263,10 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zglfw.path("libs/glfw/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_glfw.cpp",
"libs/imgui/backends/imgui_impl_opengl3.cpp",
"imgui_impl_glfw.cpp",
"imgui_impl_opengl3.cpp",
},
.flags = &(cflags.* ++ .{"-DIMGUI_IMPL_OPENGL_LOADER_CUSTOM"}),
});
Expand All @@ -264,19 +276,21 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zglfw.path("libs/glfw/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_glfw.cpp",
"libs/imgui/backends/imgui_impl_dx12.cpp",
"imgui_impl_glfw.cpp",
"imgui_impl_dx12.cpp",
},
.flags = cflags,
});
imgui.linkSystemLibrary("d3dcompiler_47");
},
.win32_dx12 => {
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_win32.cpp",
"libs/imgui/backends/imgui_impl_dx12.cpp",
"imgui_impl_win32.cpp",
"imgui_impl_dx12.cpp",
},
.flags = cflags,
});
Expand All @@ -294,9 +308,10 @@ pub fn build(b: *std.Build) void {
}

imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_glfw.cpp",
"libs/imgui/backends/imgui_impl_vulkan.cpp",
"imgui_impl_glfw.cpp",
"imgui_impl_vulkan.cpp",
},
.flags = &(cflags.* ++ .{ "-DVK_NO_PROTOTYPES", "-DZGUI_DEGAMMA" }),
});
Expand All @@ -306,8 +321,9 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zglfw.path("libs/glfw/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_glfw.cpp",
"imgui_impl_glfw.cpp",
},
.flags = cflags,
});
Expand All @@ -317,10 +333,11 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl2/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_opengl3_loader.h",
"libs/imgui/backends/imgui_impl_sdl2.cpp",
"libs/imgui/backends/imgui_impl_opengl3.cpp",
"imgui_impl_opengl3_loader.h",
"imgui_impl_sdl2.cpp",
"imgui_impl_opengl3.cpp",
},
.flags = &(cflags.* ++ .{"-DIMGUI_IMPL_OPENGL_LOADER_IMGL3W"}),
});
Expand All @@ -331,9 +348,10 @@ pub fn build(b: *std.Build) void {
imgui.linkFramework("Cocoa");
imgui.linkFramework("QuartzCore");
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_osx.mm",
"libs/imgui/backends/imgui_impl_metal.mm",
"imgui_impl_osx.mm",
"imgui_impl_metal.mm",
},
.flags = objcflags,
});
Expand All @@ -343,8 +361,9 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl2/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl2.cpp",
"imgui_impl_sdl2.cpp",
},
.flags = cflags,
});
Expand All @@ -354,9 +373,10 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl2/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl2.cpp",
"libs/imgui/backends/imgui_impl_sdlrenderer2.cpp",
"imgui_impl_sdl2.cpp",
"imgui_impl_sdlrenderer2.cpp",
},
.flags = cflags,
});
Expand All @@ -366,9 +386,10 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl3/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl3.cpp",
"libs/imgui/backends/imgui_impl_sdlgpu3.cpp",
"imgui_impl_sdl3.cpp",
"imgui_impl_sdlgpu3.cpp",
},
.flags = cflags,
});
Expand All @@ -378,9 +399,10 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl3/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl3.cpp",
"libs/imgui/backends/imgui_impl_sdlrenderer3.cpp",
"imgui_impl_sdl3.cpp",
"imgui_impl_sdlrenderer3.cpp",
},
.flags = cflags,
});
Expand All @@ -390,9 +412,10 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl3/include/SDL3"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl3.cpp",
"libs/imgui/backends/imgui_impl_opengl3.cpp",
"imgui_impl_sdl3.cpp",
"imgui_impl_opengl3.cpp",
},
.flags = &(cflags.* ++ .{"-DIMGUI_IMPL_OPENGL_LOADER_IMGL3W"}),
});
Expand All @@ -402,8 +425,9 @@ pub fn build(b: *std.Build) void {
imgui.addIncludePath(zsdl.path("libs/sdl3/include"));
}
imgui.addCSourceFiles(.{
.root = imgui_dep.path("backends"),
.files = &.{
"libs/imgui/backends/imgui_impl_sdl3.cpp",
"imgui_impl_sdl3.cpp",
},
.flags = cflags,
});
Expand Down Expand Up @@ -431,7 +455,8 @@ pub fn build(b: *std.Build) void {
b.installArtifact(tests);

tests.root_module.addImport("zgui_options", options_module);
tests.linkLibrary(imgui);
tests.linkLibrary(cimgui);
tests.addIncludePath(cimgui_dep.path(""));

test_step.dependOn(&b.addRunArtifact(tests).step);
}
8 changes: 8 additions & 0 deletions build.zig.zon
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,14 @@
.hash = "freetype-0.0.0-AAAAAA5JcwBMujojfNLEq5g_WijZtU56mRLYx8bjjiMU",
.lazy = true,
},
.cimgui = .{
.url = "git+https://github.com/cimgui/cimgui#d61baefa0ce2a9db938ffdeb29e64f90f44cc037",
.hash = "N-V-__8AAINUOABzgSfPV2gKxglHbB9tzG2ss89qbLl6GXPm",
},
.imgui = .{
.url = "git+https://github.com/ocornut/imgui#44aa9a4b3a6f27d09a4eb5770d095cbd376dfc4b",
.hash = "N-V-__8AAMSpeAAjIlPRk36GN81oqHOrwAtfmTZdOcDg42BM",
},
.zopengl = .{
.url = "https://github.com/zig-gamedev/zopengl/archive/33ae578d91692c814e7d6b4b42573142475f68d0.tar.gz",
.hash = "zopengl-0.6.0-dev-5-tnz7Y8CQCW_JRgxPCM4ETsKGOGHddqw5y1XaXhrsb4",
Expand Down
21 changes: 0 additions & 21 deletions libs/imgui/LICENSE.txt
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