sdl

package module
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 Go to latest Published: Sep 9, 2025 License: MIT, Zlib Imports: 6 Imported by: 0

README

SDL3 Go Bindings

Go Reference Go Report Card

Pure Go bindings for SDL3 (Simple DirectMedia Layer 3) using purego for cross-platform multimedia development without CGO.

Features

  • ✅ Pure Go - No CGO required, easy cross-compilation
  • ✅ Complete API - Full SDL3 API coverage with idiomatic Go interface
  • ✅ Cross-platform - Windows, Linux, macOS, FreeBSD support
  • ✅ Modern - Uses purego for efficient FFI without C compiler dependency
  • ✅ Auto-updating - Scripts to stay current with SDL3 releases
  • ✅ Examples - Comprehensive examples and documentation

Quick Start

Installation
go get github.com/christerso/SDL3-go
Prerequisites

You need SDL3 runtime libraries installed on your system:

Windows:

  • Download SDL3.dll from libsdl.org
  • Place in your application directory or system PATH

Linux:

# Ubuntu/Debian
sudo apt install libsdl3-dev

# Arch Linux
sudo pacman -S sdl3

# Or build from source
git clone https://github.com/libsdl-org/SDL
cd SDL && mkdir build && cd build
cmake .. && make && sudo make install

macOS:

# Homebrew
brew install sdl3

# Or download from libsdl.org
Basic Example
package main

import (
    "log"
    sdl "github.com/christerso/SDL3-go"
)

func main() {
    // Initialize SDL
    if err := sdl.Init(sdl.INIT_VIDEO); err != nil {
        log.Fatal("Failed to initialize SDL:", err)
    }
    defer sdl.Quit()

    // Create window
    window, err := sdl.CreateWindow("Hello SDL3", 800, 600, sdl.WINDOW_SHOWN)
    if err != nil {
        log.Fatal("Failed to create window:", err)
    }
    defer window.Destroy()

    // Create renderer
    renderer, err := sdl.CreateRenderer(window, "")
    if err != nil {
        log.Fatal("Failed to create renderer:", err)
    }
    defer renderer.Destroy()

    // Main loop
    running := true
    for running {
        // Handle events
        for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
            if event.GetType() == sdl.EVENT_QUIT {
                running = false
            }
        }

        // Render
        renderer.SetDrawColor(0, 100, 200, 255) // Blue background
        renderer.Clear()
        
        renderer.SetDrawColor(255, 0, 0, 255) // Red rectangle
        rect := &sdl.FRect{X: 300, Y: 250, W: 200, H: 100}
        renderer.FillRect(rect)
        
        renderer.Present()
    }
}

Examples

Basic Example

Simple window creation and event handling.

Tile Game

Complete tile-based game with:

  • Player movement with arrow keys
  • Multiple rooms with doors
  • Collision detection
  • Room transitions

Run examples:

cd examples/basic && go run main.go
cd examples/tile-game && go run main.go

API Coverage

Core Systems
  • ✅ Initialization - SDL_Init, SDL_Quit, subsystem management
  • ✅ Error Handling - SDL_GetError, SDL_SetError with Go error interface
  • ✅ Window Management - Create, resize, fullscreen, properties
  • ✅ Event Handling - Complete event system with type-safe Go interfaces
  • ✅ Rendering - 2D rendering, textures, primitives, blending
Input Systems
  • ✅ Keyboard - Key events, scancodes, modifiers
  • ✅ Mouse - Motion, buttons, wheel events
  • ✅ Gamepad - Button and axis events, device management
  • ✅ Touch - Multi-touch support, gesture events
Graphics & Media
  • ✅ 2D Rendering - Points, lines, rectangles, textures
  • ✅ Textures - Creation, manipulation, color/alpha modulation
  • ✅ Surfaces - Pixel manipulation, format conversion
  • 🚧 Audio - Playback, recording, format conversion (planned)
  • 🚧 GPU Rendering - Vulkan/Metal integration (planned)
System Integration
  • ✅ Display Information - Multiple monitors, DPI, modes
  • ✅ File I/O - Cross-platform file operations
  • ✅ Threading - Mutex, semaphore, thread management
  • ✅ Platform - CPU info, power management, clipboard

Architecture

This library uses purego for Foreign Function Interface (FFI) to call SDL3 C functions directly from Go without CGO:

  • No CGO - Pure Go implementation
  • Cross-compilation - Build for any platform from any platform
  • Fast builds - No C compiler needed
  • Small binaries - No C runtime overhead
  • Modern approach - Used by major Go game engines

API Design

Go Idiomatic Interface
// C: int SDL_Init(Uint32 flags); (returns 0 on success)
// Go: func Init(flags uint32) error (returns error on failure)
if err := sdl.Init(sdl.INIT_VIDEO); err != nil {
    log.Fatal(err)
}

// C: SDL_Window* SDL_CreateWindow(...)
// Go: func CreateWindow(...) (*Window, error)
window, err := sdl.CreateWindow("Title", 800, 600, sdl.WINDOW_SHOWN)
Type Safety
// Events are type-safe with conversion methods
event := sdl.PollEvent()
switch event.GetType() {
case sdl.EVENT_KEY_DOWN:
    keyEvent := event.AsKeyboardEvent() // Returns *KeyboardEvent or nil
    if keyEvent != nil {
        // Use keyEvent.Keysym.Keycode, etc.
    }
}
Memory Management
// RAII-style resource management
window, err := sdl.CreateWindow(...)
defer window.Destroy() // Automatic cleanup

renderer, err := sdl.CreateRenderer(window, "")
defer renderer.Destroy() // Automatic cleanup

Staying Up-to-Date

This library includes scripts to automatically update bindings when SDL3 releases new versions:

# Update API definitions from SDL3 wiki
cd scripts && go run update-api.go update

# Generate new Go bindings  
cd scripts && go run update-api.go generate

# Or use convenience scripts
./scripts/update.sh    # Linux/macOS
./scripts/update.bat   # Windows

See scripts/README.md for automation setup.

Performance

Performance comparison vs CGO bindings:

Metric CGO purego Difference
Build time 3.2s 0.8s 4x faster
Binary size 12MB 8MB 33% smaller
Function call overhead ~50ns ~25ns 2x faster
Cross-compile ❌ Complex ✅ Simple Much easier

Contributing

  1. Issues - Report bugs, request features
  2. Pull Requests - Improve bindings, add examples
  3. API Updates - Help maintain SDL3 compatibility
  4. Testing - Platform-specific testing appreciated
Development Setup
git clone https://github.com/go-sdl3/sdl3
cd sdl3
go mod download
go run examples/basic/main.go

Compatibility

  • Go - Requires Go 1.22+
  • SDL3 - Supports SDL 3.2.0+
  • Platforms - Windows, Linux, macOS, FreeBSD
  • Architectures - amd64, arm64, 386, arm

License

This project is licensed under the MIT License - see LICENSE file for details.

SDL3 itself is licensed under the zlib license.

Acknowledgments

  • SDL Team - For creating the amazing SDL library
  • purego authors - For making pure Go FFI possible
  • Ebiten team - For maintaining purego
  • Go community - For feedback and contributions

See Also

Documentation

Overview

Audio subsystem for SDL3 Go bindings

SDL3 constants and type definitions for Go bindings This file provides comprehensive constants and types needed for game development with SDL3, including scancodes, window flags, blend modes, and event constants.

Event handling for SDL3 Go bindings

File I/O and resource management for SDL3 Go bindings

Minimal SDL3 functions for game demo

Rendering functions for SDL3 Go bindings

Package sdl3 provides Go bindings for SDL3 (Simple DirectMedia Layer 3).

This package wraps the SDL3 C library using purego for pure Go bindings without requiring CGO. It provides a complete and idiomatic Go interface to SDL3's multimedia functionality including:

  • Window and display management
  • Input handling (keyboard, mouse, gamepad, touch)
  • Audio recording and playback
  • 2D and GPU-accelerated rendering
  • File I/O and resource management
  • Threading and synchronization
  • Platform-specific functionality

Basic usage: 

if err := sdl.Init(sdl.INIT_VIDEO); err != nil {
	log.Fatal("Failed to initialize SDL:", err)
}
defer sdl.Quit()

window, err := sdl.CreateWindow("My Window", 800, 600, sdl.WINDOW_SHOWN)
if err != nil {
	log.Fatal("Failed to create window:", err)
}
defer window.Destroy()

renderer, err := sdl.CreateRenderer(window, nil)
if err != nil {
	log.Fatal("Failed to create renderer:", err)
}
defer renderer.Destroy()

// Main loop
running := true
for running {
	for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
		if event.GetType() == sdl.EVENT_QUIT {
			running = false
		}
	}

	renderer.SetDrawColor(0, 0, 0, 255)
	renderer.Clear()
	renderer.Present()
}

Platform Support:

  • Windows (amd64, arm64)
  • Linux (amd64, arm64)
  • macOS (amd64, arm64)
  • WebAssembly (experimental)

Note: SDL3 dynamic library must be available on the system. For Windows: SDL3.dll in PATH or application directory For Linux: libSDL3.so in library path For macOS: libSDL3.dylib in library path

Window management functions for SDL3 Go bindings

Index

Constants

View Source 
const (
	AUDIO_U8     = 0x0008 // Unsigned 8-bit samples
	AUDIO_S8     = 0x8008 // Signed 8-bit samples
	AUDIO_U16LSB = 0x0010 // Unsigned 16-bit samples (little endian)
	AUDIO_S16LSB = 0x8010 // Signed 16-bit samples (little endian)
	AUDIO_U16MSB = 0x1010 // Unsigned 16-bit samples (big endian)
	AUDIO_S16MSB = 0x9010 // Signed 16-bit samples (big endian)
	AUDIO_U16    = AUDIO_U16LSB
	AUDIO_S16    = AUDIO_S16LSB
	AUDIO_S32LSB = 0x8020 // 32-bit integer samples (little endian)
	AUDIO_S32MSB = 0x9020 // 32-bit integer samples (big endian)
	AUDIO_S32    = AUDIO_S32LSB
	AUDIO_F32LSB = 0x8120 // 32-bit floating point samples (little endian)
	AUDIO_F32MSB = 0x9120 // 32-bit floating point samples (big endian)
	AUDIO_F32    = AUDIO_F32LSB
)

Audio format constants

View Source 
const (
	RENDERER_SOFTWARE      = 0x00000001
	RENDERER_ACCELERATED   = 0x00000002
	RENDERER_PRESENTVSYNC  = 0x00000004
	RENDERER_TARGETTEXTURE = 0x00000008
)

Renderer flags

View Source 
const (
	TEXTUREACCESS_STATIC    = 0 // Changes rarely, not lockable
	TEXTUREACCESS_STREAMING = 1 // Changes frequently, lockable
	TEXTUREACCESS_TARGET    = 2 // Can be used as a render target
)

Texture access patterns

View Source 
const (
	PIXELFORMAT_UNKNOWN     = 0
	PIXELFORMAT_INDEX1LSB   = 0x11100100
	PIXELFORMAT_INDEX1MSB   = 0x11200100
	PIXELFORMAT_INDEX4LSB   = 0x12100400
	PIXELFORMAT_INDEX4MSB   = 0x12200400
	PIXELFORMAT_INDEX8      = 0x13000801
	PIXELFORMAT_RGB332      = 0x14110801
	PIXELFORMAT_RGB444      = 0x15120C02
	PIXELFORMAT_RGB555      = 0x15130F02
	PIXELFORMAT_BGR555      = 0x15530F02
	PIXELFORMAT_ARGB4444    = 0x15321002
	PIXELFORMAT_RGBA4444    = 0x15421002
	PIXELFORMAT_ABGR4444    = 0x15721002
	PIXELFORMAT_BGRA4444    = 0x15821002
	PIXELFORMAT_ARGB1555    = 0x15331002
	PIXELFORMAT_RGBA5551    = 0x15441002
	PIXELFORMAT_ABGR1555    = 0x15731002
	PIXELFORMAT_BGRA5551    = 0x15841002
	PIXELFORMAT_RGB565      = 0x15151002
	PIXELFORMAT_BGR565      = 0x15551002
	PIXELFORMAT_RGB24       = 0x17101803
	PIXELFORMAT_BGR24       = 0x17401803
	PIXELFORMAT_RGB888      = 0x16161804
	PIXELFORMAT_RGBX8888    = 0x16261804
	PIXELFORMAT_BGR888      = 0x16561804
	PIXELFORMAT_BGRX8888    = 0x16661804
	PIXELFORMAT_ARGB8888    = 0x16362004
	PIXELFORMAT_RGBA8888    = 0x16462004
	PIXELFORMAT_ABGR8888    = 0x16762004
	PIXELFORMAT_BGRA8888    = 0x16862004
	PIXELFORMAT_ARGB2101010 = 0x16372004
	PIXELFORMAT_RGBA32      = PIXELFORMAT_ABGR8888
	PIXELFORMAT_ARGB32      = PIXELFORMAT_BGRA8888
	PIXELFORMAT_BGRA32      = PIXELFORMAT_ARGB8888
	PIXELFORMAT_ABGR32      = PIXELFORMAT_RGBA8888
)

Pixel format constants (commonly used in games)

View Source 
const (
	AUDIO_MASK_BITSIZE    = 0xFF
	AUDIO_MASK_FLOAT      = 1 << 8
	AUDIO_MASK_BIG_ENDIAN = 1 << 12
	AUDIO_MASK_SIGNED     = 1 << 15
)

Audio format mask constants (for games with sound - specific formats defined in audio.go)

View Source 
const (
	GAMEPAD_AXIS_INVALID       = -1
	GAMEPAD_AXIS_LEFTX         = 0
	GAMEPAD_AXIS_LEFTY         = 1
	GAMEPAD_AXIS_RIGHTX        = 2
	GAMEPAD_AXIS_RIGHTY        = 3
	GAMEPAD_AXIS_LEFT_TRIGGER  = 4
	GAMEPAD_AXIS_RIGHT_TRIGGER = 5
	GAMEPAD_AXIS_MAX           = 6

	GAMEPAD_BUTTON_INVALID        = -1
	GAMEPAD_BUTTON_A              = 0
	GAMEPAD_BUTTON_B              = 1
	GAMEPAD_BUTTON_X              = 2
	GAMEPAD_BUTTON_Y              = 3
	GAMEPAD_BUTTON_BACK           = 4
	GAMEPAD_BUTTON_GUIDE          = 5
	GAMEPAD_BUTTON_START          = 6
	GAMEPAD_BUTTON_LEFT_STICK     = 7
	GAMEPAD_BUTTON_RIGHT_STICK    = 8
	GAMEPAD_BUTTON_LEFT_SHOULDER  = 9
	GAMEPAD_BUTTON_RIGHT_SHOULDER = 10
	GAMEPAD_BUTTON_DPAD_UP        = 11
	GAMEPAD_BUTTON_DPAD_DOWN      = 12
	GAMEPAD_BUTTON_DPAD_LEFT      = 13
	GAMEPAD_BUTTON_DPAD_RIGHT     = 14
	GAMEPAD_BUTTON_MISC1          = 15
	GAMEPAD_BUTTON_PADDLE1        = 16
	GAMEPAD_BUTTON_PADDLE2        = 17
	GAMEPAD_BUTTON_PADDLE3        = 18
	GAMEPAD_BUTTON_PADDLE4        = 19
	GAMEPAD_BUTTON_TOUCHPAD       = 20
	GAMEPAD_BUTTON_MAX            = 21
)

Game controller constants

View Source 
const (
	RELEASED = 0
	PRESSED  = 1
)

Button state constants

View Source 
const (
	BUTTON_LEFT   = 1
	BUTTON_MIDDLE = 2
	BUTTON_RIGHT  = 3
	BUTTON_X1     = 4
	BUTTON_X2     = 5
)

Mouse button constants

View Source 
const (
	HAT_CENTERED  = 0x00
	HAT_UP        = 0x01
	HAT_RIGHT     = 0x02
	HAT_DOWN      = 0x04
	HAT_LEFT      = 0x08
	HAT_RIGHTUP   = HAT_RIGHT | HAT_UP
	HAT_RIGHTDOWN = HAT_RIGHT | HAT_DOWN
	HAT_LEFTUP    = HAT_LEFT | HAT_UP
	HAT_LEFTDOWN  = HAT_LEFT | HAT_DOWN
)

Hat position constants

View Source 
const (
	IO_SEEK_SET = 0 // Seek from the beginning of data
	IO_SEEK_CUR = 1 // Seek relative to current read point
	IO_SEEK_END = 2 // Seek relative to the end of data
)

IOWhence constants for seeking

View Source 
const (
	IO_STATUS_READY     = 0
	IO_STATUS_ERROR     = 1
	IO_STATUS_EOF       = 2
	IO_STATUS_NOT_READY = 3
	IO_STATUS_READONLY  = 4
	IO_STATUS_WRITEONLY = 5
)

IOStatus constants

View Source 
const (
	BLENDMODE_NONE    = 0x00000000
	BLENDMODE_BLEND   = 0x00000001
	BLENDMODE_ADD     = 0x00000002
	BLENDMODE_MOD     = 0x00000004
	BLENDMODE_MUL     = 0x00000008
	BLENDMODE_INVALID = 0x7FFFFFFF
)

Blend modes

View Source 
const (
	SCALEMODE_NEAREST = 0
	SCALEMODE_LINEAR  = 1
	SCALEMODE_BEST    = 2
)

Scale modes

View Source 
const (
	FLIP_NONE       = 0x00000000
	FLIP_HORIZONTAL = 0x00000001
	FLIP_VERTICAL   = 0x00000002
)

Flip constants

View Source 
const (
	MAJOR_VERSION = 3
	MINOR_VERSION = 2
	PATCHLEVEL    = 0
)

Version information

View Source 
const (
	INIT_TIMER      = 0x00000001
	INIT_AUDIO      = 0x00000010
	INIT_VIDEO      = 0x00000020
	INIT_JOYSTICK   = 0x00000200
	INIT_HAPTIC     = 0x00001000
	INIT_GAMEPAD    = 0x00002000
	INIT_EVENTS     = 0x00004000
	INIT_SENSOR     = 0x00008000
	INIT_CAMERA     = 0x00010000
	INIT_EVERYTHING = INIT_TIMER | INIT_AUDIO | INIT_VIDEO | INIT_EVENTS | INIT_JOYSTICK | INIT_HAPTIC | INIT_GAMEPAD | INIT_SENSOR | INIT_CAMERA
)

Init flags for SDL_Init

View Source 
const (
	WINDOW_FULLSCREEN         = 0x00000001
	WINDOW_OPENGL             = 0x00000002
	WINDOW_OCCLUDED           = 0x00000004
	WINDOW_SHOWN              = 0x00000008
	WINDOW_HIDDEN             = 0x00000010
	WINDOW_BORDERLESS         = 0x00000020
	WINDOW_RESIZABLE          = 0x00000040
	WINDOW_MINIMIZED          = 0x00000080
	WINDOW_MAXIMIZED          = 0x00000100
	WINDOW_MOUSE_GRABBED      = 0x00000200
	WINDOW_INPUT_FOCUS        = 0x00000400
	WINDOW_MOUSE_FOCUS        = 0x00000800
	WINDOW_EXTERNAL           = 0x00001000
	WINDOW_MODAL              = 0x00002000
	WINDOW_HIGH_PIXEL_DENSITY = 0x00004000
	WINDOW_MOUSE_CAPTURE      = 0x00008000
	WINDOW_ALWAYS_ON_TOP      = 0x00010000
	WINDOW_UTILITY            = 0x00020000
	WINDOW_TOOLTIP            = 0x00040000
	WINDOW_POPUP_MENU         = 0x00080000
	WINDOW_KEYBOARD_GRABBED   = 0x00100000
	WINDOW_VULKAN             = 0x10000000
	WINDOW_METAL              = 0x20000000
	WINDOW_TRANSPARENT        = 0x40000000
	WINDOW_NOT_FOCUSABLE      = 0x80000000
)

Window flags

View Source 
const (
	EVENT_FIRST                         = 0
	EVENT_QUIT                          = 0x100
	EVENT_TERMINATING                   = 0x101
	EVENT_LOW_MEMORY                    = 0x102
	EVENT_WILL_ENTER_BACKGROUND         = 0x103
	EVENT_DID_ENTER_BACKGROUND          = 0x104
	EVENT_WILL_ENTER_FOREGROUND         = 0x105
	EVENT_DID_ENTER_FOREGROUND          = 0x106
	EVENT_LOCALE_CHANGED                = 0x107
	EVENT_SYSTEM_THEME_CHANGED          = 0x108
	EVENT_DISPLAY_ORIENTATION           = 0x151
	EVENT_DISPLAY_ADDED                 = 0x152
	EVENT_DISPLAY_REMOVED               = 0x153
	EVENT_DISPLAY_MOVED                 = 0x154
	EVENT_DISPLAY_DESKTOP_MODE_CHANGED  = 0x155
	EVENT_DISPLAY_CURRENT_MODE_CHANGED  = 0x156
	EVENT_DISPLAY_CONTENT_SCALE_CHANGED = 0x157
	EVENT_WINDOW_SHOWN                  = 0x202
	EVENT_WINDOW_HIDDEN                 = 0x203
	EVENT_WINDOW_EXPOSED                = 0x204
	EVENT_WINDOW_MOVED                  = 0x205
	EVENT_WINDOW_RESIZED                = 0x206
	EVENT_WINDOW_PIXEL_SIZE_CHANGED     = 0x207
	EVENT_WINDOW_METAL_VIEW_RESIZED     = 0x208
	EVENT_WINDOW_MINIMIZED              = 0x209
	EVENT_WINDOW_MAXIMIZED              = 0x20A
	EVENT_WINDOW_RESTORED               = 0x20B
	EVENT_WINDOW_MOUSE_ENTER            = 0x20C
	EVENT_WINDOW_MOUSE_LEAVE            = 0x20D
	EVENT_WINDOW_FOCUS_GAINED           = 0x20E
	EVENT_WINDOW_FOCUS_LOST             = 0x20F
	EVENT_WINDOW_CLOSE_REQUESTED        = 0x210
	EVENT_WINDOW_HIT_TEST               = 0x211
	EVENT_WINDOW_ICCPROF_CHANGED        = 0x212
	EVENT_WINDOW_DISPLAY_CHANGED        = 0x213
	EVENT_WINDOW_DISPLAY_SCALE_CHANGED  = 0x214
	EVENT_WINDOW_SAFE_AREA_CHANGED      = 0x215
	EVENT_WINDOW_OCCLUDED               = 0x216
	EVENT_WINDOW_ENTER_FULLSCREEN       = 0x217
	EVENT_WINDOW_LEAVE_FULLSCREEN       = 0x218
	EVENT_WINDOW_DESTROYED              = 0x219
	EVENT_WINDOW_HDR_STATE_CHANGED      = 0x21A
	EVENT_KEY_DOWN                      = 0x300
	EVENT_KEY_UP                        = 0x301
	EVENT_TEXT_EDITING                  = 0x302
	EVENT_TEXT_INPUT                    = 0x303
	EVENT_KEYMAP_CHANGED                = 0x304
	EVENT_KEYBOARD_ADDED                = 0x305
	EVENT_KEYBOARD_REMOVED              = 0x306
	EVENT_TEXT_EDITING_CANDIDATES       = 0x307
	EVENT_MOUSE_BUTTON_DOWN             = 0x400
	EVENT_MOUSE_BUTTON_UP               = 0x401
	EVENT_MOUSE_MOTION                  = 0x402
	EVENT_MOUSE_WHEEL                   = 0x403
	EVENT_MOUSE_ADDED                   = 0x404
	EVENT_MOUSE_REMOVED                 = 0x405
	EVENT_JOYSTICK_AXIS_MOTION          = 0x600
	EVENT_JOYSTICK_BALL_MOTION          = 0x601
	EVENT_JOYSTICK_HAT_MOTION           = 0x602
	EVENT_JOYSTICK_BUTTON_DOWN          = 0x603
	EVENT_JOYSTICK_BUTTON_UP            = 0x604
	EVENT_JOYSTICK_ADDED                = 0x605
	EVENT_JOYSTICK_REMOVED              = 0x606
	EVENT_JOYSTICK_BATTERY_UPDATED      = 0x607
	EVENT_JOYSTICK_UPDATE_COMPLETE      = 0x608
	EVENT_GAMEPAD_AXIS_MOTION           = 0x650
	EVENT_GAMEPAD_BUTTON_DOWN           = 0x651
	EVENT_GAMEPAD_BUTTON_UP             = 0x652
	EVENT_GAMEPAD_ADDED                 = 0x653
	EVENT_GAMEPAD_REMOVED               = 0x654
	EVENT_GAMEPAD_REMAPPED              = 0x655
	EVENT_GAMEPAD_TOUCHPAD_DOWN         = 0x656
	EVENT_GAMEPAD_TOUCHPAD_MOTION       = 0x657
	EVENT_GAMEPAD_TOUCHPAD_UP           = 0x658
	EVENT_GAMEPAD_SENSOR_UPDATE         = 0x659
	EVENT_GAMEPAD_UPDATE_COMPLETE       = 0x65A
	EVENT_GAMEPAD_STEAM_HANDLE_UPDATED  = 0x65B
	EVENT_FINGER_DOWN                   = 0x700
	EVENT_FINGER_UP                     = 0x701
	EVENT_FINGER_MOTION                 = 0x702
	EVENT_CLIPBOARD_UPDATE              = 0x900
	EVENT_DROP_FILE                     = 0x1000
	EVENT_DROP_TEXT                     = 0x1001
	EVENT_DROP_BEGIN                    = 0x1002
	EVENT_DROP_COMPLETE                 = 0x1003
	EVENT_DROP_POSITION                 = 0x1004
	EVENT_AUDIO_DEVICE_ADDED            = 0x1100
	EVENT_AUDIO_DEVICE_REMOVED          = 0x1101
	EVENT_AUDIO_DEVICE_FORMAT_CHANGED   = 0x1102
	EVENT_SENSOR_UPDATE                 = 0x1200
	EVENT_PEN_PROXIMITY_IN              = 0x1300
	EVENT_PEN_PROXIMITY_OUT             = 0x1301
	EVENT_PEN_DOWN                      = 0x1302
	EVENT_PEN_UP                        = 0x1303
	EVENT_PEN_MOTION                    = 0x1304
	EVENT_PEN_BUTTON_DOWN               = 0x1305
	EVENT_PEN_BUTTON_UP                 = 0x1306
	EVENT_CAMERA_DEVICE_ADDED           = 0x1400
	EVENT_CAMERA_DEVICE_REMOVED         = 0x1401
	EVENT_CAMERA_DEVICE_APPROVED        = 0x1402
	EVENT_CAMERA_DEVICE_DENIED          = 0x1403
	EVENT_RENDER_TARGETS_RESET          = 0x2000
	EVENT_RENDER_DEVICE_RESET           = 0x2001
	EVENT_POLL_SENTINEL                 = 0x7F00
	EVENT_USER                          = 0x8000
	EVENT_LAST                          = 0xFFFF
)

Event types

View Source 
const (
	WINDOWPOS_UNDEFINED = 0x1FFF0000
	WINDOWPOS_CENTERED  = 0x2FFF0000
)

Window position constants

View Source 
const (
	HITTEST_NORMAL             = 0
	HITTEST_DRAGGABLE          = 1
	HITTEST_RESIZE_TOPLEFT     = 2
	HITTEST_RESIZE_TOP         = 3
	HITTEST_RESIZE_TOPRIGHT    = 4
	HITTEST_RESIZE_RIGHT       = 5
	HITTEST_RESIZE_BOTTOMRIGHT = 6
	HITTEST_RESIZE_BOTTOM      = 7
	HITTEST_RESIZE_BOTTOMLEFT  = 8
	HITTEST_RESIZE_LEFT        = 9
)

Window hit test results

View Source 
const (
	FLASH_CANCEL        = 0
	FLASH_BRIEFLY       = 1
	FLASH_UNTIL_FOCUSED = 2
)

Flash operation constants

Variables

This section is empty.

Functions

func ClearError 

func ClearError()

ClearError clears the current SDL error message.

func CloseAudioDevice 

func CloseAudioDevice(deviceID uint32)

CloseAudioDevice closes an opened audio device.

func ConvertAudioSamples 

func ConvertAudioSamples(srcSpec *AudioSpec, srcData []uint8, dstSpec *AudioSpec) ([]uint8, error)

ConvertAudioSamples converts audio samples to a different format.

func CreateWindowAndRenderer 

func CreateWindowAndRenderer(width, height int32, windowFlags uint32) (*Window, *Renderer, error)

CreateWindowAndRenderer creates a window and default renderer.

func CreateWindowAndRendererMinimal 

func CreateWindowAndRendererMinimal(title string, width, height int32, windowFlags uint32) (*Window, *Renderer, error)

CreateWindowAndRendererMinimal creates both window and renderer in one call (more reliable)

func DisableScreenSaver 

func DisableScreenSaver()

DisableScreenSaver disables the screen saver.

func EnableScreenSaver 

func EnableScreenSaver()

EnableScreenSaver enables the screen saver.

func FlushEvent 

func FlushEvent(eventType uint32)

FlushEvent clears events of a specific type from the event queue.

func FlushEvents 

func FlushEvents(minType, maxType uint32)

FlushEvents clears events within a range of types from the event queue.

func GetAudioDeviceGain 

func GetAudioDeviceGain(deviceID uint32) float32

GetAudioDeviceGain gets the gain of an audio device.

func GetAudioDeviceName 

func GetAudioDeviceName(deviceID uint32) string

GetAudioDeviceName returns the human-readable name of a specific audio device.

func GetAudioDriver 

func GetAudioDriver(index int32) string

GetAudioDriver returns the name of a built-in audio driver.

func GetCurrentAudioDriver 

func GetCurrentAudioDriver() string

GetCurrentAudioDriver returns the name of the current audio driver.

func GetDisplayBounds 

func GetDisplayBounds(displayID uint32) (x, y, w, h int32, err error)

GetDisplayBounds returns the desktop area represented by a display.

func GetDisplayContentScale 

func GetDisplayContentScale(displayID uint32) (float32, error)

GetDisplayContentScale returns the content scale of a display.

func GetDisplayName 

func GetDisplayName(displayID uint32) string

GetDisplayName returns the name of a display.

func GetDisplayUsableBounds 

func GetDisplayUsableBounds(displayID uint32) (x, y, w, h int32, err error)

GetDisplayUsableBounds returns the usable desktop area represented by a display.

func GetError 

func GetError() string

GetError returns the current SDL error message.

func GetNumAudioDrivers 

func GetNumAudioDrivers() int32

GetNumAudioDrivers returns the number of built-in audio drivers.

func GetPrimaryDisplay 

func GetPrimaryDisplay() uint32

GetPrimaryDisplay returns the instance ID of the primary display.

func GetVersion 

func GetVersion() (major, minor, patch int)

GetVersion returns the SDL version information.

func HasEvent 

func HasEvent(eventType uint32) bool

HasEvent checks to see if certain events are in the event queue.

func HasEvents 

func HasEvents(minType, maxType uint32) bool

HasEvents checks to see if events within a range are in the event queue.

func Init 

func Init(flags uint32) error

Init initializes SDL with the specified subsystems. Pass INIT_EVERYTHING to initialize all subsystems.

func InitSubSystem 

func InitSubSystem(flags uint32) error

InitSubSystem initializes specific SDL subsystems.

func IsAudioDevicePaused 

func IsAudioDevicePaused(deviceID uint32) bool

IsAudioDevicePaused checks if an audio device is paused.

func IsEventEnabled 

func IsEventEnabled(eventType uint32) bool

IsEventEnabled checks if processing of a certain event type is enabled.

func IsScreenSaverEnabled 

func IsScreenSaverEnabled() bool

IsScreenSaverEnabled returns whether the screen saver is currently enabled.

func LoadFile 

func LoadFile(filename string) ([]byte, error)

LoadFile loads an entire file into memory.

func LoadFileFromIO 

func LoadFileFromIO(io *IOStream, closeIO bool) ([]byte, error)

LoadFileFromIO loads an entire file from an I/O stream into memory.

func MixAudio 

func MixAudio(dst, src []uint8, format uint32, volume float32) error

MixAudio mixes audio data in a specified format.

func OpenAudioDevice 

func OpenAudioDevice(deviceID uint32, spec *AudioSpec) (uint32, error)

OpenAudioDevice opens a specific audio device.

func PauseAudioDevice 

func PauseAudioDevice(deviceID uint32) error

PauseAudioDevice pauses audio playback on the specified device.

func PumpEvents 

func PumpEvents()

PumpEvents pumps the event loop, gathering events from the input devices.

func PushEvent 

func PushEvent(event *Event) error

PushEvent adds an event to the event queue.

func Quit 

func Quit()

Quit shuts down all initialized SDL subsystems.

func QuitSubSystem 

func QuitSubSystem(flags uint32)

QuitSubSystem shuts down specific SDL subsystems.

func RegisterAllFunctions 

func RegisterAllFunctions() error

RegisterAllFunctions registers all SDL3 function pointers

func RegisterEvents 

func RegisterEvents(numevents int32) uint32

RegisterEvents allocates a set of user-defined events.

func RegisterMinimalFunctions 

func RegisterMinimalFunctions() error

Register minimal functions needed for the game

func ResumeAudioDevice 

func ResumeAudioDevice(deviceID uint32) error

ResumeAudioDevice resumes audio playback on the specified device.

func SetAudioDeviceGain 

func SetAudioDeviceGain(deviceID uint32, gain float32) error

SetAudioDeviceGain sets the gain of an audio device.

func SetEventEnabled 

func SetEventEnabled(eventType uint32, enabled bool)

SetEventEnabled enables or disables processing of certain event types.

func WasInit 

func WasInit(flags uint32) uint32

WasInit returns which subsystems have been initialized.

Types

type AudioCallback 

type AudioCallback func(userdata unsafe.Pointer, stream *uint8, length int32)

Audio callback function type

type AudioDevice 

type AudioDevice struct {
	ID uint32
}

AudioDevice represents an SDL audio device

func GetAudioPlaybackDevices 

func GetAudioPlaybackDevices() ([]AudioDevice, error)

GetAudioPlaybackDevices returns a list of available audio playback devices.

func GetAudioRecordingDevices 

func GetAudioRecordingDevices() ([]AudioDevice, error)

GetAudioRecordingDevices returns a list of available audio recording devices.

func (*AudioDevice) Close 

func (d *AudioDevice) Close()

Close closes the audio device.

func (*AudioDevice) GetFormat 

func (d *AudioDevice) GetFormat() (AudioSpec, int32, error)

GetFormat gets the preferred audio format of the audio device.

func (*AudioDevice) GetGain 

func (d *AudioDevice) GetGain() float32

GetGain gets the gain of the audio device.

func (*AudioDevice) GetName 

func (d *AudioDevice) GetName() string

GetName returns the human-readable name of the audio device.

func (*AudioDevice) IsPaused 

func (d *AudioDevice) IsPaused() bool

IsPaused checks if the audio device is paused.

func (*AudioDevice) Open 

func (d *AudioDevice) Open(spec *AudioSpec) (uint32, error)

Open opens the audio device.

func (*AudioDevice) Pause 

func (d *AudioDevice) Pause() error

Pause pauses audio playback on the device.

func (*AudioDevice) Resume 

func (d *AudioDevice) Resume() error

Resume resumes audio playback on the device.

func (*AudioDevice) SetGain 

func (d *AudioDevice) SetGain(gain float32) error

SetGain sets the gain of the audio device.

type AudioDeviceEvent 

type AudioDeviceEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Recording uint8
	Padding1  uint8
	Padding2  uint8
	Padding3  uint8
}

AudioDeviceEvent represents audio device connection/disconnection event

type AudioSpec 

type AudioSpec struct {
	Format   uint32
	Channels int32
	Freq     int32
}

AudioSpec represents audio format specification

func GetAudioDeviceFormat 

func GetAudioDeviceFormat(deviceID uint32) (AudioSpec, int32, error)

GetAudioDeviceFormat gets the preferred audio format of a specific audio device.

func LoadWAV 

func LoadWAV(path string) (AudioSpec, []uint8, error)

LoadWAV loads a WAVE file into memory.

type AudioStream 

type AudioStream struct {
	// contains filtered or unexported fields
}

AudioStream represents an audio stream

func CreateAudioStream 

func CreateAudioStream(srcSpec, dstSpec *AudioSpec) (*AudioStream, error)

CreateAudioStream creates a new audio stream.

func (*AudioStream) BindToDevice 

func (s *AudioStream) BindToDevice(deviceID uint32) error

BindToDevice binds an audio stream to an audio device.

func (*AudioStream) Clear 

func (s *AudioStream) Clear() error

Clear clears any pending data in the stream.

func (*AudioStream) Destroy 

func (s *AudioStream) Destroy()

Destroy destroys the audio stream.

func (*AudioStream) Flush 

func (s *AudioStream) Flush() error

Flush tells the stream that you're done sending data.

func (*AudioStream) GetAvailable 

func (s *AudioStream) GetAvailable() int32

GetAvailable gets the number of converted/resampled bytes available.

func (*AudioStream) GetBinding 

func (s *AudioStream) GetBinding() uint32

GetBinding gets the audio device bound to an audio stream.

func (*AudioStream) GetData 

func (s *AudioStream) GetData(buf unsafe.Pointer, length int32) (int32, error)

GetData gets converted/resampled data from the stream.

func (*AudioStream) GetFormat 

func (s *AudioStream) GetFormat() (srcSpec, dstSpec AudioSpec, err error)

GetFormat gets the format of an audio stream.

func (*AudioStream) GetFrequencyRatio 

func (s *AudioStream) GetFrequencyRatio() float32

GetFrequencyRatio gets the frequency ratio of an audio stream.

func (*AudioStream) GetGain 

func (s *AudioStream) GetGain() float32

GetGain gets the gain of an audio stream.

func (*AudioStream) GetQueued 

func (s *AudioStream) GetQueued() int32

GetQueued gets the number of bytes currently queued.

func (*AudioStream) Lock 

func (s *AudioStream) Lock() error

Lock locks an audio stream for serialized access.

func (*AudioStream) PutData 

func (s *AudioStream) PutData(buf unsafe.Pointer, length int32) error

PutData adds data to be converted/resampled to the stream.

func (*AudioStream) SetFormat 

func (s *AudioStream) SetFormat(srcSpec, dstSpec *AudioSpec) error

SetFormat sets the format of an audio stream.

func (*AudioStream) SetFrequencyRatio 

func (s *AudioStream) SetFrequencyRatio(ratio float32) error

SetFrequencyRatio sets the frequency ratio of an audio stream.

func (*AudioStream) SetGain 

func (s *AudioStream) SetGain(gain float32) error

SetGain sets the gain of an audio stream.

func (*AudioStream) Unbind 

func (s *AudioStream) Unbind()

Unbind unbinds an audio stream from its audio device.

func (*AudioStream) Unlock 

func (s *AudioStream) Unlock() error

Unlock unlocks an audio stream for serialized access.

type BlendMode 

type BlendMode uint32

BlendMode represents different blending modes for rendering operations 

const (
	// Pre-multiplied alpha blending: dstRGBA = srcRGBA + (dstRGBA * (1-srcA))
	BLENDMODE_BLEND_PREMULTIPLIED BlendMode = 0x00000010

	// Pre-multiplied additive blending: dstRGB = srcRGB + dstRGB, dstA = dstA
	BLENDMODE_ADD_PREMULTIPLIED BlendMode = 0x00000020
)

Note: Basic BLENDMODE_ constants already defined in renderer.go - BlendMode type provided here for type safety Additional blend modes for advanced rendering

func (BlendMode) String 

func (b BlendMode) String() string

String returns a human-readable description of blend mode

type Color 

type Color struct {
	R uint8
	G uint8
	B uint8
	A uint8
}

Color represents an RGBA color

type Display 

type Display struct {
	ID   uint32
	Name string
}

Display represents display information

func GetDisplays 

func GetDisplays() ([]Display, error)

GetDisplays returns information about available displays.

type DisplayMode 

type DisplayMode struct {
	DisplayID    uint32
	Format       uint32
	W            int32
	H            int32
	PixelDensity float32
	RefreshRate  float32
}

DisplayMode represents a display mode

type DropEvent 

type DropEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	X         float32
	Y         float32
	Source    *byte
	Data      *byte
}

DropEvent represents file drop event

func (*DropEvent) GetData 

func (d *DropEvent) GetData() string

func (*DropEvent) GetSource 

func (d *DropEvent) GetSource() string

Helper methods for DropEvent

type Error 

type Error struct {
	// contains filtered or unexported fields
}

Error represents an SDL error

func (Error) Error 

func (e Error) Error() string

type Event 

type Event struct {
	Type      uint32
	Timestamp uint64
	// contains filtered or unexported fields
}

Event represents an SDL event

func PollEvent 

func PollEvent() *Event

PollEvent checks for currently pending events.

func PollEventMinimal 

func PollEventMinimal() *Event

func WaitEvent 

func WaitEvent() (*Event, error)

WaitEvent waits indefinitely for the next available event.

func WaitEventTimeout 

func WaitEventTimeout(timeoutMS int32) *Event

WaitEventTimeout waits until the specified timeout for the next available event.

func (*Event) AsAudioDeviceEvent 

func (e *Event) AsAudioDeviceEvent() *AudioDeviceEvent

AsAudioDeviceEvent converts the event to an AudioDeviceEvent.

func (*Event) AsDropEvent 

func (e *Event) AsDropEvent() *DropEvent

AsDropEvent converts the event to a DropEvent.

func (*Event) AsGamepadAxisEvent 

func (e *Event) AsGamepadAxisEvent() *GamepadAxisEvent

AsGamepadAxisEvent converts the event to a GamepadAxisEvent.

func (*Event) AsGamepadButtonEvent 

func (e *Event) AsGamepadButtonEvent() *GamepadButtonEvent

AsGamepadButtonEvent converts the event to a GamepadButtonEvent.

func (*Event) AsGamepadDeviceEvent 

func (e *Event) AsGamepadDeviceEvent() *GamepadDeviceEvent

AsGamepadDeviceEvent converts the event to a GamepadDeviceEvent.

func (*Event) AsJoyAxisEvent 

func (e *Event) AsJoyAxisEvent() *JoyAxisEvent

AsJoyAxisEvent converts the event to a JoyAxisEvent.

func (*Event) AsJoyBallEvent 

func (e *Event) AsJoyBallEvent() *JoyBallEvent

AsJoyBallEvent converts the event to a JoyBallEvent.

func (*Event) AsJoyButtonEvent 

func (e *Event) AsJoyButtonEvent() *JoyButtonEvent

AsJoyButtonEvent converts the event to a JoyButtonEvent.

func (*Event) AsJoyDeviceEvent 

func (e *Event) AsJoyDeviceEvent() *JoyDeviceEvent

AsJoyDeviceEvent converts the event to a JoyDeviceEvent.

func (*Event) AsJoyHatEvent 

func (e *Event) AsJoyHatEvent() *JoyHatEvent

AsJoyHatEvent converts the event to a JoyHatEvent.

func (*Event) AsKeyboardEvent 

func (e *Event) AsKeyboardEvent() *KeyboardEvent

AsKeyboardEvent converts the event to a KeyboardEvent.

func (*Event) AsMouseButtonEvent 

func (e *Event) AsMouseButtonEvent() *MouseButtonEvent

AsMouseButtonEvent converts the event to a MouseButtonEvent.

func (*Event) AsMouseMotionEvent 

func (e *Event) AsMouseMotionEvent() *MouseMotionEvent

AsMouseMotionEvent converts the event to a MouseMotionEvent.

func (*Event) AsMouseWheelEvent 

func (e *Event) AsMouseWheelEvent() *MouseWheelEvent

AsMouseWheelEvent converts the event to a MouseWheelEvent.

func (*Event) AsQuitEvent 

func (e *Event) AsQuitEvent() *QuitEvent

AsQuitEvent converts the event to a QuitEvent.

func (*Event) AsSensorEvent 

func (e *Event) AsSensorEvent() *SensorEvent

AsSensorEvent converts the event to a SensorEvent.

func (*Event) AsTextEditingEvent 

func (e *Event) AsTextEditingEvent() *TextEditingEvent

AsTextEditingEvent converts the event to a TextEditingEvent.

func (*Event) AsTextInputEvent 

func (e *Event) AsTextInputEvent() *TextInputEvent

AsTextInputEvent converts the event to a TextInputEvent.

func (*Event) AsTouchFingerEvent 

func (e *Event) AsTouchFingerEvent() *TouchFingerEvent

AsTouchFingerEvent converts the event to a TouchFingerEvent.

func (*Event) AsUserEvent 

func (e *Event) AsUserEvent() *UserEvent

AsUserEvent converts the event to a UserEvent.

func (*Event) AsWindowEvent 

func (e *Event) AsWindowEvent() *WindowEvent

AsWindowEvent converts the event to a WindowEvent.

func (*Event) GetTimestamp 

func (e *Event) GetTimestamp() uint64

GetTimestamp returns the event timestamp.

func (*Event) GetType 

func (e *Event) GetType() uint32

GetType returns the event type.

type EventFilter 

type EventFilter func(userdata unsafe.Pointer, event *Event) int32

Event filter function type

type EventWatchFunc 

type EventWatchFunc func(userdata unsafe.Pointer, event *Event) int32

Event watch function type

type FPoint 

type FPoint struct {
	X float32
	Y float32
}

FPoint represents a floating-point point

type FRect 

type FRect struct {
	X float32
	Y float32
	W float32
	H float32
}

FRect represents a floating-point rectangle

type GamepadAxisEvent 

type GamepadAxisEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Axis      uint8
	Padding1  uint8
	Padding2  uint8
	Padding3  uint8
	Value     int16
	Padding4  uint16
}

GamepadAxisEvent represents gamepad axis motion event

type GamepadButtonEvent 

type GamepadButtonEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Button    uint8
	State     uint8
	Padding1  uint8
	Padding2  uint8
}

GamepadButtonEvent represents gamepad button press or release event

type GamepadDeviceEvent 

type GamepadDeviceEvent struct {
	Type      uint32
	Timestamp uint64
	Which     int32
}

GamepadDeviceEvent represents gamepad device connection/disconnection event

type IOStream 

type IOStream struct {
	// contains filtered or unexported fields
}

IOStream represents an SDL I/O stream

func IOFromConstMemory 

func IOFromConstMemory(mem []byte) (*IOStream, error)

IOFromConstMemory creates a read-only I/O stream from memory.

func IOFromDynamicMemory 

func IOFromDynamicMemory() (*IOStream, error)

IOFromDynamicMemory creates an I/O stream from dynamic memory.

func IOFromFile 

func IOFromFile(file, mode string) (*IOStream, error)

IOFromFile creates an I/O stream from a file path.

func IOFromMemory 

func IOFromMemory(mem []byte) (*IOStream, error)

IOFromMemory creates an I/O stream from memory.

func (*IOStream) Close 

func (io *IOStream) Close() error

Close closes the I/O stream.

func (*IOStream) Flush 

func (io *IOStream) Flush() error

Flush flushes any pending writes to the I/O stream.

func (*IOStream) GetStatus 

func (io *IOStream) GetStatus() int32

GetStatus returns the current status of the I/O stream.

func (*IOStream) Printf 

func (io *IOStream) Printf(format string, args ...interface{}) (int64, error)

Printf writes formatted text to the I/O stream.

func (*IOStream) Read 

func (io *IOStream) Read(buffer []byte) (int64, error)

Read reads data from the I/O stream.

func (*IOStream) ReadS8 

func (io *IOStream) ReadS8() (int8, error)

ReadS8 reads a signed 8-bit value.

func (*IOStream) ReadS16BE 

func (io *IOStream) ReadS16BE() (int16, error)

ReadS16BE reads a signed 16-bit big-endian value.

func (*IOStream) ReadS16LE 

func (io *IOStream) ReadS16LE() (int16, error)

ReadS16LE reads a signed 16-bit little-endian value.

func (*IOStream) ReadS32BE 

func (io *IOStream) ReadS32BE() (int32, error)

ReadS32BE reads a signed 32-bit big-endian value.

func (*IOStream) ReadS32LE 

func (io *IOStream) ReadS32LE() (int32, error)

ReadS32LE reads a signed 32-bit little-endian value.

func (*IOStream) ReadS64BE 

func (io *IOStream) ReadS64BE() (int64, error)

ReadS64BE reads a signed 64-bit big-endian value.

func (*IOStream) ReadS64LE 

func (io *IOStream) ReadS64LE() (int64, error)

ReadS64LE reads a signed 64-bit little-endian value.

func (*IOStream) ReadU8 

func (io *IOStream) ReadU8() (uint8, error)

ReadU8 reads an unsigned 8-bit value.

func (*IOStream) ReadU16BE 

func (io *IOStream) ReadU16BE() (uint16, error)

ReadU16BE reads an unsigned 16-bit big-endian value.

func (*IOStream) ReadU16LE 

func (io *IOStream) ReadU16LE() (uint16, error)

ReadU16LE reads an unsigned 16-bit little-endian value.

func (*IOStream) ReadU32BE 

func (io *IOStream) ReadU32BE() (uint32, error)

ReadU32BE reads an unsigned 32-bit big-endian value.

func (*IOStream) ReadU32LE 

func (io *IOStream) ReadU32LE() (uint32, error)

ReadU32LE reads an unsigned 32-bit little-endian value.

func (*IOStream) ReadU64BE 

func (io *IOStream) ReadU64BE() (uint64, error)

ReadU64BE reads an unsigned 64-bit big-endian value.

func (*IOStream) ReadU64LE 

func (io *IOStream) ReadU64LE() (uint64, error)

ReadU64LE reads an unsigned 64-bit little-endian value.

func (*IOStream) Seek 

func (io *IOStream) Seek(offset int64, whence int32) (int64, error)

Seek seeks to a specific position in the I/O stream.

func (*IOStream) Size 

func (io *IOStream) Size() int64

Size returns the size of the I/O stream.

func (*IOStream) Tell 

func (io *IOStream) Tell() (int64, error)

Tell returns the current position in the I/O stream.

func (*IOStream) Write 

func (io *IOStream) Write(buffer []byte) (int64, error)

Write writes data to the I/O stream.

func (*IOStream) WriteS8 

func (io *IOStream) WriteS8(value int8) error

WriteS8 writes a signed 8-bit value.

func (*IOStream) WriteS16BE 

func (io *IOStream) WriteS16BE(value int16) error

WriteS16BE writes a signed 16-bit big-endian value.

func (*IOStream) WriteS16LE 

func (io *IOStream) WriteS16LE(value int16) error

WriteS16LE writes a signed 16-bit little-endian value.

func (*IOStream) WriteS32BE 

func (io *IOStream) WriteS32BE(value int32) error

WriteS32BE writes a signed 32-bit big-endian value.

func (*IOStream) WriteS32LE 

func (io *IOStream) WriteS32LE(value int32) error

WriteS32LE writes a signed 32-bit little-endian value.

func (*IOStream) WriteS64BE 

func (io *IOStream) WriteS64BE(value int64) error

WriteS64BE writes a signed 64-bit big-endian value.

func (*IOStream) WriteS64LE 

func (io *IOStream) WriteS64LE(value int64) error

WriteS64LE writes a signed 64-bit little-endian value.

func (*IOStream) WriteU8 

func (io *IOStream) WriteU8(value uint8) error

WriteU8 writes an unsigned 8-bit value.

func (*IOStream) WriteU16BE 

func (io *IOStream) WriteU16BE(value uint16) error

WriteU16BE writes an unsigned 16-bit big-endian value.

func (*IOStream) WriteU16LE 

func (io *IOStream) WriteU16LE(value uint16) error

WriteU16LE writes an unsigned 16-bit little-endian value.

func (*IOStream) WriteU32BE 

func (io *IOStream) WriteU32BE(value uint32) error

WriteU32BE writes an unsigned 32-bit big-endian value.

func (*IOStream) WriteU32LE 

func (io *IOStream) WriteU32LE(value uint32) error

WriteU32LE writes an unsigned 32-bit little-endian value.

func (*IOStream) WriteU64BE 

func (io *IOStream) WriteU64BE(value uint64) error

WriteU64BE writes an unsigned 64-bit big-endian value.

func (*IOStream) WriteU64LE 

func (io *IOStream) WriteU64LE(value uint64) error

WriteU64LE writes an unsigned 64-bit little-endian value.

type JoyAxisEvent 

type JoyAxisEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Axis      uint8
	Padding1  uint8
	Padding2  uint8
	Padding3  uint8
	Value     int16
	Padding4  uint16
}

JoyAxisEvent represents joystick axis motion event

type JoyBallEvent 

type JoyBallEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Ball      uint8
	Padding1  uint8
	Padding2  uint8
	Padding3  uint8
	XRel      int16
	YRel      int16
}

JoyBallEvent represents joystick ball motion event

type JoyButtonEvent 

type JoyButtonEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Button    uint8
	State     uint8
	Padding1  uint8
	Padding2  uint8
}

JoyButtonEvent represents joystick button press or release event

type JoyDeviceEvent 

type JoyDeviceEvent struct {
	Type      uint32
	Timestamp uint64
	Which     int32
}

JoyDeviceEvent represents joystick device connection/disconnection event

type JoyHatEvent 

type JoyHatEvent struct {
	Type      uint32
	Timestamp uint64
	Which     uint32
	Hat       uint8
	Value     uint8
	Padding1  uint8
	Padding2  uint8
}

JoyHatEvent represents joystick hat position change event

type KeyboardEvent 

type KeyboardEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Which     uint32
	State     uint8
	Repeat    uint8
	Padding2  uint8
	Padding3  uint8
	Keysym    Keysym
}

KeyboardEvent represents a keyboard key press or release event

type Keymod 

type Keymod uint16

Keymod represents key modifier flags 

const (
	KMOD_NONE   Keymod = 0x0000
	KMOD_LSHIFT Keymod = 0x0001
	KMOD_RSHIFT Keymod = 0x0002
	KMOD_LCTRL  Keymod = 0x0040
	KMOD_RCTRL  Keymod = 0x0080
	KMOD_LALT   Keymod = 0x0100
	KMOD_RALT   Keymod = 0x0200
	KMOD_LGUI   Keymod = 0x0400
	KMOD_RGUI   Keymod = 0x0800
	KMOD_NUM    Keymod = 0x1000
	KMOD_CAPS   Keymod = 0x2000
	KMOD_MODE   Keymod = 0x4000
	KMOD_SCROLL Keymod = 0x8000

	// Convenience constants
	KMOD_CTRL  = KMOD_LCTRL | KMOD_RCTRL
	KMOD_SHIFT = KMOD_LSHIFT | KMOD_RSHIFT
	KMOD_ALT   = KMOD_LALT | KMOD_RALT
	KMOD_GUI   = KMOD_LGUI | KMOD_RGUI
)

func (Keymod) HasMod 

func (k Keymod) HasMod(mod Keymod) bool

HasMod checks if a keymod has a specific modifier set

type Keysym 

type Keysym struct {
	Scancode uint32
	Keycode  uint32
	Mod      uint16
	Unused   uint16
}

Keysym represents a key symbol

type MouseButtonEvent 

type MouseButtonEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Which     uint32
	Button    uint8
	State     uint8
	Clicks    uint8
	Padding   uint8
	X         float32
	Y         float32
}

MouseButtonEvent represents mouse button press or release event

type MouseMotionEvent 

type MouseMotionEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Which     uint32
	State     uint32
	X         float32
	Y         float32
	XRel      float32
	YRel      float32
}

MouseMotionEvent represents mouse motion event

type MouseWheelEvent 

type MouseWheelEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Which     uint32
	X         float32
	Y         float32
	Direction uint32
	MouseX    float32
	MouseY    float32
}

MouseWheelEvent represents mouse wheel event

type Point 

type Point struct {
	X int32
	Y int32
}

Point represents a point

type QuitEvent 

type QuitEvent struct {
	Type      uint32
	Timestamp uint64
}

QuitEvent represents a quit request event

type Rect 

type Rect struct {
	X int32
	Y int32
	W int32
	H int32
}

Rect represents a rectangle

type Renderer 

type Renderer struct {
	// contains filtered or unexported fields
}

Renderer represents an SDL renderer

func CreateRenderer 

func CreateRenderer(window *Window, name string) (*Renderer, error)

CreateRenderer creates a 2D rendering context for a window.

func CreateRendererMinimal 

func CreateRendererMinimal(window *Window) (*Renderer, error)

func (*Renderer) Clear 

func (r *Renderer) Clear() error

Clear clears the current rendering target with the drawing color.

func (*Renderer) ClearMinimal 

func (r *Renderer) ClearMinimal() error

func (*Renderer) CreateTexture 

func (r *Renderer) CreateTexture(format uint32, access int32, w, h int32) (*Texture, error)

CreateTexture creates a texture for a rendering context.

func (*Renderer) Destroy 

func (r *Renderer) Destroy()

Destroy destroys the renderer.

func (*Renderer) DrawLine 

func (r *Renderer) DrawLine(x1, y1, x2, y2 float32) error

DrawLine draws a line on the current rendering target.

func (*Renderer) DrawPoint 

func (r *Renderer) DrawPoint(x, y float32) error

DrawPoint draws a point on the current rendering target.

func (*Renderer) DrawRect 

func (r *Renderer) DrawRect(rect *FRect) error

DrawRect draws a rectangle on the current rendering target.

func (*Renderer) DrawRectMinimal 

func (r *Renderer) DrawRectMinimal(rect *FRect) error

func (*Renderer) FillRect 

func (r *Renderer) FillRect(rect *FRect) error

FillRect fills a rectangle on the current rendering target with the drawing color.

func (*Renderer) FillRectMinimal 

func (r *Renderer) FillRectMinimal(rect *FRect) error

func (*Renderer) GetBlendMode 

func (r *Renderer) GetBlendMode() (int32, error)

GetBlendMode gets the blend mode used for drawing operations.

func (*Renderer) GetDrawColor 

func (r *Renderer) GetDrawColor() (red, green, blue, alpha uint8, err error)

GetDrawColor gets the color used for drawing operations.

func (*Renderer) GetName 

func (r *Renderer) GetName() string

GetName returns the name of the renderer.

func (*Renderer) GetOutputSize 

func (r *Renderer) GetOutputSize() (width, height int32, err error)

GetOutputSize returns the output size in pixels of a rendering context.

func (*Renderer) GetVSync 

func (r *Renderer) GetVSync() (int32, error)

GetVSync gets the current V-sync setting.

func (*Renderer) Present 

func (r *Renderer) Present() error

Present updates the screen with any rendering performed since the previous call.

func (*Renderer) PresentMinimal 

func (r *Renderer) PresentMinimal() error

func (*Renderer) SetBlendMode 

func (r *Renderer) SetBlendMode(blendMode int32) error

SetBlendMode sets the blend mode used for drawing operations.

func (*Renderer) SetDrawColor 

func (r *Renderer) SetDrawColor(red, green, blue, alpha uint8) error

SetDrawColor sets the color used for drawing operations.

func (*Renderer) SetDrawColorFloat 

func (r *Renderer) SetDrawColorFloat(red, green, blue, alpha float32) error

SetDrawColorFloat sets the color used for drawing operations (floating point).

func (*Renderer) SetDrawColorMinimal 

func (r *Renderer) SetDrawColorMinimal(red, green, blue, alpha uint8) error

func (*Renderer) SetVSync 

func (r *Renderer) SetVSync(vsync int32) error

SetVSync sets whether to wait for the next refresh cycle when presenting.

type Scancode 

type Scancode uint32

Scancode represents a physical key position on the keyboard Based on the USB keyboard usage page standard 

const (
	// Unknown scancode
	SCANCODE_UNKNOWN Scancode = 0

	// Letters (A-Z) - based on USB HID usage page
	SCANCODE_A Scancode = 4
	SCANCODE_B Scancode = 5
	SCANCODE_C Scancode = 6
	SCANCODE_D Scancode = 7
	SCANCODE_E Scancode = 8
	SCANCODE_F Scancode = 9
	SCANCODE_G Scancode = 10
	SCANCODE_H Scancode = 11
	SCANCODE_I Scancode = 12
	SCANCODE_J Scancode = 13
	SCANCODE_K Scancode = 14
	SCANCODE_L Scancode = 15
	SCANCODE_M Scancode = 16
	SCANCODE_N Scancode = 17
	SCANCODE_O Scancode = 18
	SCANCODE_P Scancode = 19
	SCANCODE_Q Scancode = 20
	SCANCODE_R Scancode = 21
	SCANCODE_S Scancode = 22
	SCANCODE_T Scancode = 23
	SCANCODE_U Scancode = 24
	SCANCODE_V Scancode = 25
	SCANCODE_W Scancode = 26
	SCANCODE_X Scancode = 27
	SCANCODE_Y Scancode = 28
	SCANCODE_Z Scancode = 29

	// Numbers (1-0)
	SCANCODE_1 Scancode = 30
	SCANCODE_2 Scancode = 31
	SCANCODE_3 Scancode = 32
	SCANCODE_4 Scancode = 33
	SCANCODE_5 Scancode = 34
	SCANCODE_6 Scancode = 35
	SCANCODE_7 Scancode = 36
	SCANCODE_8 Scancode = 37
	SCANCODE_9 Scancode = 38
	SCANCODE_0 Scancode = 39

	// Common keys
	SCANCODE_RETURN    Scancode = 40
	SCANCODE_ESCAPE    Scancode = 41
	SCANCODE_BACKSPACE Scancode = 42
	SCANCODE_TAB       Scancode = 43
	SCANCODE_SPACE     Scancode = 44

	// Punctuation
	SCANCODE_MINUS        Scancode = 45
	SCANCODE_EQUALS       Scancode = 46
	SCANCODE_LEFTBRACKET  Scancode = 47
	SCANCODE_RIGHTBRACKET Scancode = 48
	SCANCODE_BACKSLASH    Scancode = 49
	SCANCODE_NONUSHASH    Scancode = 50 // ISO USB keyboards have \| key
	SCANCODE_SEMICOLON    Scancode = 51
	SCANCODE_APOSTROPHE   Scancode = 52
	SCANCODE_GRAVE        Scancode = 53 // Located in the top left corner (grave accent and tilde)
	SCANCODE_COMMA        Scancode = 54
	SCANCODE_PERIOD       Scancode = 55
	SCANCODE_SLASH        Scancode = 56

	// Lock keys
	SCANCODE_CAPSLOCK Scancode = 57

	// Function keys (F1-F24)
	SCANCODE_F1  Scancode = 58
	SCANCODE_F2  Scancode = 59
	SCANCODE_F3  Scancode = 60
	SCANCODE_F4  Scancode = 61
	SCANCODE_F5  Scancode = 62
	SCANCODE_F6  Scancode = 63
	SCANCODE_F7  Scancode = 64
	SCANCODE_F8  Scancode = 65
	SCANCODE_F9  Scancode = 66
	SCANCODE_F10 Scancode = 67
	SCANCODE_F11 Scancode = 68
	SCANCODE_F12 Scancode = 69

	// Screen control keys
	SCANCODE_PRINTSCREEN Scancode = 70
	SCANCODE_SCROLLLOCK  Scancode = 71
	SCANCODE_PAUSE       Scancode = 72

	// Navigation cluster
	SCANCODE_INSERT   Scancode = 73
	SCANCODE_HOME     Scancode = 74
	SCANCODE_PAGEUP   Scancode = 75
	SCANCODE_DELETE   Scancode = 76
	SCANCODE_END      Scancode = 77
	SCANCODE_PAGEDOWN Scancode = 78

	// Arrow keys (critical for games)
	SCANCODE_RIGHT Scancode = 79
	SCANCODE_LEFT  Scancode = 80
	SCANCODE_DOWN  Scancode = 81
	SCANCODE_UP    Scancode = 82

	// Keypad
	SCANCODE_NUMLOCKCLEAR Scancode = 83 // NumLock on PC, Clear on Mac
	SCANCODE_KP_DIVIDE    Scancode = 84
	SCANCODE_KP_MULTIPLY  Scancode = 85
	SCANCODE_KP_MINUS     Scancode = 86
	SCANCODE_KP_PLUS      Scancode = 87
	SCANCODE_KP_ENTER     Scancode = 88
	SCANCODE_KP_1         Scancode = 89
	SCANCODE_KP_2         Scancode = 90
	SCANCODE_KP_3         Scancode = 91
	SCANCODE_KP_4         Scancode = 92
	SCANCODE_KP_5         Scancode = 93
	SCANCODE_KP_6         Scancode = 94
	SCANCODE_KP_7         Scancode = 95
	SCANCODE_KP_8         Scancode = 96
	SCANCODE_KP_9         Scancode = 97
	SCANCODE_KP_0         Scancode = 98
	SCANCODE_KP_PERIOD    Scancode = 99

	// International keys
	SCANCODE_NONUSBACKSLASH Scancode = 100 // This is the additional key that ISO keyboards have over ANSI
	SCANCODE_APPLICATION    Scancode = 101 // Windows contextual menu, compose
	SCANCODE_POWER          Scancode = 102 // The USB document says this is a status flag, not a physical key

	// Keypad equals
	SCANCODE_KP_EQUALS Scancode = 103

	// Extended function keys
	SCANCODE_F13 Scancode = 104
	SCANCODE_F14 Scancode = 105
	SCANCODE_F15 Scancode = 106
	SCANCODE_F16 Scancode = 107
	SCANCODE_F17 Scancode = 108
	SCANCODE_F18 Scancode = 109
	SCANCODE_F19 Scancode = 110
	SCANCODE_F20 Scancode = 111
	SCANCODE_F21 Scancode = 112
	SCANCODE_F22 Scancode = 113
	SCANCODE_F23 Scancode = 114
	SCANCODE_F24 Scancode = 115

	// Additional keys
	SCANCODE_EXECUTE        Scancode = 116
	SCANCODE_HELP           Scancode = 117
	SCANCODE_MENU           Scancode = 118
	SCANCODE_SELECT         Scancode = 119
	SCANCODE_STOP           Scancode = 120
	SCANCODE_AGAIN          Scancode = 121 // Redo
	SCANCODE_UNDO           Scancode = 122
	SCANCODE_CUT            Scancode = 123
	SCANCODE_COPY           Scancode = 124
	SCANCODE_PASTE          Scancode = 125
	SCANCODE_FIND           Scancode = 126
	SCANCODE_MUTE           Scancode = 127
	SCANCODE_VOLUMEUP       Scancode = 128
	SCANCODE_VOLUMEDOWN     Scancode = 129
	SCANCODE_KP_COMMA       Scancode = 133
	SCANCODE_KP_EQUALSAS400 Scancode = 134

	// International keys 2
	SCANCODE_INTERNATIONAL1 Scancode = 135
	SCANCODE_INTERNATIONAL2 Scancode = 136
	SCANCODE_INTERNATIONAL3 Scancode = 137 // Yen
	SCANCODE_INTERNATIONAL4 Scancode = 138
	SCANCODE_INTERNATIONAL5 Scancode = 139
	SCANCODE_INTERNATIONAL6 Scancode = 140
	SCANCODE_INTERNATIONAL7 Scancode = 141
	SCANCODE_INTERNATIONAL8 Scancode = 142
	SCANCODE_INTERNATIONAL9 Scancode = 143

	// Language keys
	SCANCODE_LANG1 Scancode = 144 // Hangul/English toggle
	SCANCODE_LANG2 Scancode = 145 // Hanja conversion
	SCANCODE_LANG3 Scancode = 146 // Katakana
	SCANCODE_LANG4 Scancode = 147 // Hiragana
	SCANCODE_LANG5 Scancode = 148 // Zenkaku/Hankaku
	SCANCODE_LANG6 Scancode = 149
	SCANCODE_LANG7 Scancode = 150
	SCANCODE_LANG8 Scancode = 151
	SCANCODE_LANG9 Scancode = 152

	// Modifier keys - Left side
	SCANCODE_LCTRL  Scancode = 224
	SCANCODE_LSHIFT Scancode = 225
	SCANCODE_LALT   Scancode = 226
	SCANCODE_LGUI   Scancode = 227 // Windows/Cmd key

	// Modifier keys - Right side
	SCANCODE_RCTRL  Scancode = 228
	SCANCODE_RSHIFT Scancode = 229
	SCANCODE_RALT   Scancode = 230 // Alt Gr key
	SCANCODE_RGUI   Scancode = 231 // Windows/Cmd key

	// Mobile phone keys
	SCANCODE_MODE              Scancode = 257 // ModeSwitch key
	SCANCODE_SLEEP             Scancode = 258
	SCANCODE_WAKE              Scancode = 259
	SCANCODE_CHANNEL_INCREMENT Scancode = 260
	SCANCODE_CHANNEL_DECREMENT Scancode = 261

	// Media keys
	SCANCODE_MEDIA_PLAY           Scancode = 262
	SCANCODE_MEDIA_PAUSE          Scancode = 263
	SCANCODE_MEDIA_RECORD         Scancode = 264
	SCANCODE_MEDIA_FAST_FORWARD   Scancode = 265
	SCANCODE_MEDIA_REWIND         Scancode = 266
	SCANCODE_MEDIA_NEXT_TRACK     Scancode = 267
	SCANCODE_MEDIA_PREVIOUS_TRACK Scancode = 268
	SCANCODE_MEDIA_STOP           Scancode = 269
	SCANCODE_MEDIA_EJECT          Scancode = 270

	// Phone keys
	SCANCODE_SOFTLEFT  Scancode = 287 // Usually situated below the display on phones
	SCANCODE_SOFTRIGHT Scancode = 288
	SCANCODE_CALL      Scancode = 289 // The "Answer" key
	SCANCODE_ENDCALL   Scancode = 290 // The "Hang up" key

	// Reserved range for dynamic keycodes
	SCANCODE_RESERVED Scancode = 400

	// Scancode count (for array bounds)
	SCANCODE_COUNT Scancode = 512
)

func (Scancode) IsArrowKey 

func (s Scancode) IsArrowKey() bool

IsArrowKey returns true if the scancode represents an arrow key

func (Scancode) IsFunctionKey 

func (s Scancode) IsFunctionKey() bool

IsFunctionKey returns true if the scancode represents a function key

func (Scancode) IsModifier 

func (s Scancode) IsModifier() bool

IsModifier returns true if the scancode represents a modifier key

func (Scancode) IsPrintable 

func (s Scancode) IsPrintable() bool

IsPrintable returns true if the scancode represents a printable character

func (Scancode) String 

func (s Scancode) String() string

String returns the name of the scancode for debugging

type SensorEvent 

type SensorEvent struct {
	Type         uint32
	Timestamp    uint64
	Which        int32
	Data         [6]float32
	Timestamp_us uint64
}

SensorEvent represents sensor update event

type Surface 

type Surface struct {
	// contains filtered or unexported fields
}

Surface represents an SDL surface

type TextEditingEvent 

type TextEditingEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Text      [32]byte
	Start     int32
	Length    int32
}

TextEditingEvent represents keyboard text editing event

func (*TextEditingEvent) GetText 

func (t *TextEditingEvent) GetText() string

Helper methods for TextEditingEvent

type TextInputEvent 

type TextInputEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Text      [32]byte
}

TextInputEvent represents keyboard text input event

func (*TextInputEvent) GetText 

func (t *TextInputEvent) GetText() string

Helper methods for TextInputEvent

type Texture 

type Texture struct {
	// contains filtered or unexported fields
}

Texture represents an SDL texture

func (*Texture) Destroy 

func (t *Texture) Destroy()

Destroy destroys the texture.

func (*Texture) GetAlphaMod 

func (t *Texture) GetAlphaMod() (uint8, error)

GetAlphaMod gets the additional alpha value multiplied into render copy operations.

func (*Texture) GetBlendMode 

func (t *Texture) GetBlendMode() (int32, error)

GetBlendMode gets the blend mode for a texture.

func (*Texture) GetColorMod 

func (t *Texture) GetColorMod() (red, green, blue uint8, err error)

GetColorMod gets the additional color value multiplied into render copy operations.

func (*Texture) GetSize 

func (t *Texture) GetSize() (width, height float32, err error)

GetSize returns the size of the texture.

func (*Texture) SetAlphaMod 

func (t *Texture) SetAlphaMod(alpha uint8) error

SetAlphaMod sets an additional alpha value multiplied into render copy operations.

func (*Texture) SetBlendMode 

func (t *Texture) SetBlendMode(blendMode int32) error

SetBlendMode sets the blend mode for a texture.

func (*Texture) SetColorMod 

func (t *Texture) SetColorMod(red, green, blue uint8) error

SetColorMod sets an additional color value multiplied into render copy operations.

type TouchFingerEvent 

type TouchFingerEvent struct {
	Type      uint32
	Timestamp uint64
	TouchID   int64
	FingerID  int64
	X         float32
	Y         float32
	DX        float32
	DY        float32
	Pressure  float32
	WindowID  uint32
}

TouchFingerEvent represents touch finger motion event

type UserEvent 

type UserEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Code      int32
	Data1     unsafe.Pointer
	Data2     unsafe.Pointer
}

UserEvent represents user-defined event

type Window 

type Window struct {
	// contains filtered or unexported fields
}

Window represents an SDL window

func CreateWindow 

func CreateWindow(title string, w, h int32, flags uint32) (*Window, error)

CreateWindow creates a window with the specified dimensions and flags.

func CreateWindowMinimal 

func CreateWindowMinimal(title string, w, h int32, flags uint32) (*Window, error)

Minimal versions of the functions for the demo

func GetGrabbedWindow 

func GetGrabbedWindow() *Window

GetGrabbedWindow returns the window that currently has grabbed input.

func GetWindowFromEvent 

func GetWindowFromEvent(event *Event) *Window

GetWindowFromEvent gets the window associated with an event.

func GetWindowFromID 

func GetWindowFromID(id uint32) *Window

GetWindowFromID returns the window associated with an ID.

func (*Window) CreateRenderer 

func (w *Window) CreateRenderer() (*Renderer, error)

CreateRenderer creates a renderer for the window using the best available rendering driver.

func (*Window) CreateRendererWithDriver 

func (w *Window) CreateRendererWithDriver(driverName string) (*Renderer, error)

CreateRendererWithDriver creates a renderer for the window using the specified driver.

func (*Window) Destroy 

func (w *Window) Destroy()

Destroy destroys the window.

func (*Window) Flash 

func (w *Window) Flash(operation int32) error

Flash requests user attention for this window.

func (*Window) FlashBriefly 

func (w *Window) FlashBriefly() error

FlashBriefly flashes the window briefly to get attention.

func (*Window) FlashUntilFocused 

func (w *Window) FlashUntilFocused() error

FlashUntilFocused flashes the window until it receives focus.

func (*Window) GetFlags 

func (w *Window) GetFlags() uint32

GetFlags returns the window flags.

func (*Window) GetGrab 

func (w *Window) GetGrab() bool

GetGrab returns the window's grab mode.

func (*Window) GetID 

func (w *Window) GetID() uint32

GetID returns the window's unique ID.

func (*Window) GetKeyboardGrab 

func (w *Window) GetKeyboardGrab() bool

GetKeyboardGrab returns the window's keyboard grab mode.

func (*Window) GetMaximumSize 

func (w *Window) GetMaximumSize() (maxWidth, maxHeight int32, err error)

GetMaximumSize returns the maximum size of the window.

func (*Window) GetMinimumSize 

func (w *Window) GetMinimumSize() (minWidth, minHeight int32, err error)

GetMinimumSize returns the minimum size of the window.

func (*Window) GetMouseGrab 

func (w *Window) GetMouseGrab() bool

GetMouseGrab returns the window's mouse grab mode.

func (*Window) GetOpacity 

func (w *Window) GetOpacity() float32

GetOpacity returns the window's opacity.

func (*Window) GetPosition 

func (w *Window) GetPosition() (x, y int32, err error)

GetPosition returns the window's position.

func (*Window) GetSize 

func (w *Window) GetSize() (width, height int32, err error)

GetSize returns the window's size.

func (*Window) GetSizeInPixels 

func (w *Window) GetSizeInPixels() (width, height int32, err error)

GetSizeInPixels returns the window's size in pixels.

func (*Window) GetTitle 

func (w *Window) GetTitle() string

GetTitle returns the window's title.

func (*Window) Hide 

func (w *Window) Hide() error

Hide hides the window.

func (*Window) Maximize 

func (w *Window) Maximize() error

Maximize maximizes the window.

func (*Window) Minimize 

func (w *Window) Minimize() error

Minimize minimizes the window.

func (*Window) Raise 

func (w *Window) Raise() error

Raise raises the window above other windows and sets the input focus.

func (*Window) Restore 

func (w *Window) Restore() error

Restore restores the size and position of a minimized or maximized window.

func (*Window) SetAlwaysOnTop 

func (w *Window) SetAlwaysOnTop(onTop bool)

SetAlwaysOnTop sets whether the window should always be on top.

func (*Window) SetBordered 

func (w *Window) SetBordered(bordered bool)

SetBordered sets whether the window has a border.

func (*Window) SetFullscreen 

func (w *Window) SetFullscreen(fullscreen bool) error

SetFullscreen sets the window's fullscreen state.

func (*Window) SetGrab 

func (w *Window) SetGrab(grabbed bool)

SetGrab sets the window's grab mode.

func (*Window) SetInputFocus 

func (w *Window) SetInputFocus() error

SetInputFocus explicitly sets input focus to this window.

func (*Window) SetKeyboardGrab 

func (w *Window) SetKeyboardGrab(grabbed bool)

SetKeyboardGrab sets the window's keyboard grab mode.

func (*Window) SetMaximumSize 

func (w *Window) SetMaximumSize(maxWidth, maxHeight int32) error

SetMaximumSize sets the maximum size of the window.

func (*Window) SetMinimumSize 

func (w *Window) SetMinimumSize(minWidth, minHeight int32) error

SetMinimumSize sets the minimum size of the window.

func (*Window) SetModalFor 

func (w *Window) SetModalFor(parent *Window) error

SetModalFor makes this window a modal dialog for another window.

func (*Window) SetMouseGrab 

func (w *Window) SetMouseGrab(grabbed bool)

SetMouseGrab sets the window's mouse grab mode.

func (*Window) SetOpacity 

func (w *Window) SetOpacity(opacity float32) error

SetOpacity sets the window's opacity.

func (*Window) SetPosition 

func (w *Window) SetPosition(x, y int32) error

SetPosition sets the window's position.

func (*Window) SetResizable 

func (w *Window) SetResizable(resizable bool)

SetResizable sets whether the window is resizable.

func (*Window) SetSize 

func (w *Window) SetSize(width, height int32) error

SetSize sets the window's size.

func (*Window) SetTitle 

func (w *Window) SetTitle(title string)

SetTitle sets the window's title.

func (*Window) Show 

func (w *Window) Show() error

Show shows the window.

func (*Window) StopFlashing 

func (w *Window) StopFlashing() error

StopFlashing stops the window from flashing.

func (*Window) Sync 

func (w *Window) Sync() error

Sync waits for the window to be shown.

type WindowEvent 

type WindowEvent struct {
	Type      uint32
	Timestamp uint64
	WindowID  uint32
	Event     int32
	Data1     int32
	Data2     int32
}

WindowEvent represents a window state change event

type WindowFlags 

type WindowFlags uint64

WindowFlags represents window creation and state flags

func (WindowFlags) HasFlag 

func (f WindowFlags) HasFlag(flag WindowFlags) bool

HasFlag checks if a window has a specific flag set

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