package cocoa // #cgo CFLAGS: -x objective-c // #cgo LDFLAGS: -framework Cocoa -framework OpenGL // // #include "input.h" // // void StartApplication(void); // void PollEvents(void); // import "C" import ( "github.com/hajimehoshi/go-ebiten/graphics" "github.com/hajimehoshi/go-ebiten/graphics/opengl" "github.com/hajimehoshi/go-ebiten/ui" "image" ) type UI struct { screenWidth int screenHeight int screenScale int window *window initialEventSent bool textureFactory *textureFactory graphicsDevice *opengl.Device uiEvents } var currentUI *UI func New(screenWidth, screenHeight, screenScale int, title string) *UI { if currentUI != nil { panic("UI can't be duplicated.") } u := &UI{ screenWidth: screenWidth, screenHeight: screenHeight, screenScale: screenScale, initialEventSent: false, } C.StartApplication() u.textureFactory = runTextureFactory() u.textureFactory.UseContext(func() { u.graphicsDevice = opengl.NewDevice( u.screenWidth, u.screenHeight, u.screenScale) }) u.window = u.textureFactory.CreateWindow( u.screenWidth*u.screenScale, u.screenHeight*u.screenScale, title) currentUI = u return u } func (u *UI) PollEvents() { C.PollEvents() if !u.initialEventSent { e := ui.ScreenSizeUpdatedEvent{u.screenWidth, u.screenHeight} u.uiEvents.notifyScreenSizeUpdated(e) u.initialEventSent = true } } func (u *UI) CreateTexture(tag interface{}, img image.Image) { go func() { var id graphics.TextureId var err error u.textureFactory.UseContext(func() { id, err = u.graphicsDevice.CreateTextureFromImage("", img) }) e := graphics.TextureCreatedEvent{ Tag: tag, Id: id, Error: err, } u.textureFactory.notifyTextureCreated(e) }() } func (u *UI) CreateRenderTarget(tag interface{}, width, height int) { go func() { var id graphics.RenderTargetId var err error u.textureFactory.UseContext(func() { id, err = u.graphicsDevice.CreateRenderTarget("", width, height) }) e := graphics.RenderTargetCreatedEvent{ Tag: tag, Id: id, Error: err, } u.textureFactory.notifyRenderTargetCreated(e) }() } func (u *UI) TextureCreated() <-chan graphics.TextureCreatedEvent { return u.textureFactory.TextureCreated() } func (u *UI) RenderTargetCreated() <-chan graphics.RenderTargetCreatedEvent { return u.textureFactory.RenderTargetCreated() } func (u *UI) Draw(f func(graphics.Canvas)) { u.window.UseContext(func() { u.graphicsDevice.Update(f) }) } //export ebiten_ScreenSizeUpdated func ebiten_ScreenSizeUpdated(width, height int) { u := currentUI e := ui.ScreenSizeUpdatedEvent{width, height} u.uiEvents.notifyScreenSizeUpdated(e) } //export ebiten_InputUpdated func ebiten_InputUpdated(inputType C.InputType, cx, cy C.int) { u := currentUI if inputType == C.InputTypeMouseUp { e := ui.InputStateUpdatedEvent{-1, -1} u.uiEvents.notifyInputStateUpdated(e) return } x, y := int(cx), int(cy) x /= u.screenScale y /= u.screenScale if x < 0 { x = 0 } else if u.screenWidth <= x { x = u.screenWidth - 1 } if y < 0 { y = 0 } else if u.screenHeight <= y { y = u.screenHeight - 1 } e := ui.InputStateUpdatedEvent{x, y} u.uiEvents.notifyInputStateUpdated(e) }