reugenio
59c597fc18
Immediate Mode GUI library for Zig with software rendering. Core features: - SDL2 backend for cross-platform window/events - Software rasterizer (works everywhere, including SSH) - Macro recording system (cornerstone feature, like Vim) - Command-list rendering (DrawRect, DrawText, etc.) - Layout system with constraints - Color/Style system with themes Project structure: - src/core/: context, command, input, layout, style - src/macro/: MacroRecorder, MacroPlayer, MacroStorage - src/render/: Framebuffer, SoftwareRenderer, Font - src/backend/: Backend interface, SDL2 implementation - examples/: hello.zig, macro_demo.zig - docs/: Architecture, research (Gio, immediate-mode libs, Simifactu) Build: zig build (requires SDL2-devel) Tests: 16 tests passing 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
81 lines
2.3 KiB
Zig
81 lines
2.3 KiB
Zig
//! Hello World - Basic zCatGui example
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//!
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//! Demonstrates:
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//! - Initializing the backend
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//! - Creating a framebuffer
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//! - Basic rendering
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//! - Event loop
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const std = @import("std");
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const zcatgui = @import("zcatgui");
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const Framebuffer = zcatgui.render.Framebuffer;
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const SoftwareRenderer = zcatgui.render.SoftwareRenderer;
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const Sdl2Backend = zcatgui.backend.Sdl2Backend;
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const Color = zcatgui.Color;
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const Command = zcatgui.Command;
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer _ = gpa.deinit();
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const allocator = gpa.allocator();
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// Initialize backend
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var backend = try Sdl2Backend.init("zCatGui - Hello World", 800, 600);
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defer backend.deinit();
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// Create framebuffer
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var fb = try Framebuffer.init(allocator, 800, 600);
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defer fb.deinit();
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// Create renderer
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var renderer = SoftwareRenderer.init(&fb);
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var running = true;
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var frame: u32 = 0;
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while (running) {
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// Poll events
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while (backend.pollEvent()) |event| {
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switch (event) {
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.quit => running = false,
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.key => |key| {
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if (key.key == .escape and key.pressed) {
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running = false;
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}
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},
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.resize => |size| {
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try fb.resize(size.width, size.height);
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},
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else => {},
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}
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}
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// Clear
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renderer.clear(Color.background);
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// Draw some rectangles
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renderer.execute(Command.rect(50, 50, 200, 100, Color.primary));
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renderer.execute(Command.rect(300, 50, 200, 100, Color.success));
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renderer.execute(Command.rect(550, 50, 200, 100, Color.danger));
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// Draw rectangle outline
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renderer.execute(Command.rectOutline(50, 200, 700, 100, Color.border));
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// Animate a rectangle
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const x = @as(i32, @intCast(50 + (frame % 600)));
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renderer.execute(Command.rect(x, 350, 100, 100, Color.warning));
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// Draw some lines
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renderer.execute(Command.line(50, 500, 750, 500, Color.foreground));
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renderer.execute(Command.line(400, 450, 400, 550, Color.foreground));
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// Present
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backend.present(&fb);
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frame += 1;
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// Cap at ~60 FPS
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std.Thread.sleep(16 * std.time.ns_per_ms);
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}
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}
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