func writeSDLstr(newStr string) { if ttf.Init() != 0 { panic(sdl.GetError()) } var font = ttf.OpenFont("FontinSans.otf", int(fontsize)) blue := sdl.Color{185, 230, 255, 0} white := sdl.Color{255, 255, 255, 0} text0 := ttf.RenderText_Blended(font, previousStr, blue) font.SetStyle(ttf.STYLE_UNDERLINE) text1 := ttf.RenderText_Blended(font, newStr, white) introw = introw - fontsize - fontsize/2 screen.FillRect(&sdl.Rect{3, introw, uint16(winWidth - 3), uint16(fontsize + fontsize/2)}, bgcolor) screen.Blit(&sdl.Rect{3, introw, 0, 0}, text0, nil) introw = introw + fontsize + fontsize/2 screen.Blit(&sdl.Rect{3, introw, 0, 0}, text1, nil) introw = introw + fontsize + fontsize/2 if introw > (int16(winHeight) - fontsize) { introw = 0 } screen.FillRect(&sdl.Rect{3, introw, uint16(winWidth - 3), uint16(fontsize + fontsize/2)}, bgcolor) screen.Flip() previousStr = newStr }
func (d *LEM1802) LoadFontFromTTF(filename string) (font *Font, err error) { if filename == "" { filename = resourcemanager.NewResourceManager("github.com/kierdavis/go/dcpuem/lem1802").GetFilename("FreeMono.ttf") } f := ttf.OpenFont(filename, 8) if f == nil { return nil, ErrCouldNotLoadFont } defer f.Close() font = new(Font) for ch := uint16(0); ch < 128; ch++ { _, _, _, _, advance, e := f.GlyphMetrics(ch) if e != 0 { return nil, ErrCouldNotLoadFont } surf := sdl.CreateRGBSurface(sdl.SWSURFACE|sdl.SRCALPHA, advance, 8, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000) fontSurf := ttf.RenderText_Blended(f, string(ch), sdl.Color{255, 255, 255, 0}) fontSurf.Blit(nil, surf, nil) font[ch] = surf } return font, nil }
func NewFont(filename string, size int, c color.Color) *Font { var font Font font.textures = make(map[rune]gl.Texture) font.widths = make(map[rune]int) extfont := ttf.OpenFont(filename, size) if extfont == nil { panic("Could not load font") } defer extfont.Close() font.height = extfont.LineSkip() for _, ch := range "abcdefghijklmnopqrdstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 :;@'<>,.?/~#{}[]!£$%^&*()_-+=\"\\|" { _, _, _, _, advance, err := extfont.GlyphMetrics(uint16(ch)) if err != 0 { panic("Could not get glyph metrics") } // Create a bitmap with width=advance, height=font.height surface := sdl.CreateRGBSurface(sdl.SWSURFACE|sdl.SRCALPHA, advance, font.height, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000) //surface.FillRect(&sdl.Rect{0,0, uint16(advance), uint16(font.height)}, 0x0) // rect := sdl.Rect{0,0, uint16(advance), uint16(ascent)} // rect := sdl.Rect{int16(minx), int16(ascent)-int16(maxy), 0, 0} fontSurface := ttf.RenderText_Blended(extfont, string(ch), sdl.ColorFromGoColor(c)) fontSurface.Blit(nil, surface, nil) rgba := image.NewRGBA(image.Rect(0, 0, advance, font.height)) for x := 0; x < advance; x++ { for y := 0; y < font.height; y++ { rgba.Set(x, y, fontSurface.At(x, font.height-y)) } } font.widths[ch] = advance font.textures[ch] = gl.GenTexture() font.textures[ch].Bind(gl.TEXTURE_2D) gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST) gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST) gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, advance, font.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, &rgba.Pix[0]) font.textures[ch].Unbind(gl.TEXTURE_2D) } return &font }
func main() { if sdl.Init(sdl.INIT_EVERYTHING) != 0 { panic(sdl.GetError()) } if ttf.Init() != 0 { panic(sdl.GetError()) } if mixer.OpenAudio(mixer.DEFAULT_FREQUENCY, mixer.DEFAULT_FORMAT, mixer.DEFAULT_CHANNELS, 4096) != 0 { panic(sdl.GetError()) } var screen = sdl.SetVideoMode(640, 480, 32, sdl.RESIZABLE) if screen == nil { panic(sdl.GetError()) } var video_info = sdl.GetVideoInfo() println("HW_available = ", video_info.HW_available) println("WM_available = ", video_info.WM_available) println("Video_mem = ", video_info.Video_mem, "kb") sdl.EnableUNICODE(1) sdl.WM_SetCaption("Go-SDL SDL Test", "") image := sdl.Load("test.png") if image == nil { panic(sdl.GetError()) } sdl.WM_SetIcon(image, nil) running := true font := ttf.OpenFont("Fontin Sans.otf", 72) if font == nil { panic(sdl.GetError()) } font.SetStyle(ttf.STYLE_UNDERLINE) white := sdl.Color{255, 255, 255, 0} text := ttf.RenderText_Blended(font, "Test (with music)", white) music := mixer.LoadMUS("test.ogg") sound := mixer.LoadWAV("sound.ogg") if music == nil || sound == nil { panic(sdl.GetError()) } music.PlayMusic(-1) if sdl.GetKeyName(270) != "[+]" { panic("GetKeyName broken") } worm_in := make(chan Point) draw := make(chan Point, 64) var out chan Point var in chan Point out = worm_in in = out out = make(chan Point) go worm(in, out, draw) for running { for ev := sdl.PollEvent(); ev != nil; ev = sdl.PollEvent() { switch e := ev.(type) { case *sdl.QuitEvent: running = false break case *sdl.KeyboardEvent: println("") println(e.Keysym.Sym, ": ", sdl.GetKeyName(sdl.Key(e.Keysym.Sym))) if e.Keysym.Sym == 27 { running = false } fmt.Printf("%04x ", e.Type) for i := 0; i < len(e.Pad0); i++ { fmt.Printf("%02x ", e.Pad0[i]) } println() fmt.Printf("Type: %02x Which: %02x State: %02x Pad: %02x\n", e.Type, e.Which, e.State, e.Pad0[0]) fmt.Printf("Scancode: %02x Sym: %08x Mod: %04x Unicode: %04x\n", e.Keysym.Scancode, e.Keysym.Sym, e.Keysym.Mod, e.Keysym.Unicode) case *sdl.MouseButtonEvent: if e.Type == sdl.MOUSEBUTTONDOWN { println("Click:", e.X, e.Y) in = out out = make(chan Point) go worm(in, out, draw) sound.PlayChannel(-1, 0) } case *sdl.ResizeEvent: println("resize screen ", e.W, e.H) screen = sdl.SetVideoMode(int(e.W), int(e.H), 32, sdl.RESIZABLE) if screen == nil { panic(sdl.GetError()) } } } screen.FillRect(nil, 0x302019) screen.Blit(&sdl.Rect{0, 0, 0, 0}, text, nil) loop := true for loop { select { case p := <-draw: screen.Blit(&sdl.Rect{int16(p.x), int16(p.y), 0, 0}, image, nil) case <-out: default: loop = false } } var p Point sdl.GetMouseState(&p.x, &p.y) worm_in <- p screen.Flip() sdl.Delay(25) } image.Free() music.Free() font.Close() ttf.Quit() sdl.Quit() }
func RenderText(text string, color sdl.Color) *sdl.Surface { return ttf.RenderText_Blended(Font, text, color) }