package wallpaper // The methods that deal in cached Textures for Doodle. import ( "errors" "image" "git.kirsle.net/go/render" "git.kirsle.net/apps/doodle/pkg/shmem" "git.kirsle.net/apps/doodle/pkg/userdir" ) // CornerTexture returns the Texture. func (wp *Wallpaper) CornerTexture(e render.Engine) (render.Texturer, error) { if !wp.ready { return nil, errors.New("wallpaper not ready") } if wp.tex.corner == nil { tex, err := texture(e, wp.corner, wp.Name+"c") wp.tex.corner = tex return tex, err } return wp.tex.corner, nil } // TopTexture returns the Texture. func (wp *Wallpaper) TopTexture(e render.Engine) (render.Texturer, error) { if wp.tex.top == nil { tex, err := texture(e, wp.top, wp.Name+"t") wp.tex.top = tex return tex, err } return wp.tex.top, nil } // LeftTexture returns the Texture. func (wp *Wallpaper) LeftTexture(e render.Engine) (render.Texturer, error) { if wp.tex.left == nil { tex, err := texture(e, wp.left, wp.Name+"l") wp.tex.left = tex return tex, err } return wp.tex.left, nil } // RepeatTexture returns the Texture. func (wp *Wallpaper) RepeatTexture(e render.Engine) (render.Texturer, error) { if wp.tex.repeat == nil { tex, err := texture(e, wp.repeat, wp.Name+"x") wp.tex.repeat = tex return tex, err } return wp.tex.repeat, nil } // texture creates or returns a cached texture for a wallpaper. func texture(e render.Engine, img *image.RGBA, name string) (render.Texturer, error) { filename := userdir.CacheFilename("wallpaper", name+".bmp") texture, err := shmem.CurrentRenderEngine.StoreTexture(filename, img) return texture, err }