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 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 NewFont(name string, size int) (font *ttf.Font) {
font = ttf.OpenFont("/usr/share/fonts/TTF/"+name, size)
if font == nil {
panic(sdl.GetError())
}
return font
}
func main() {
if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
panic(sdl.GetError())
}
if ttf.Init() != 0 {
panic(sdl.GetError())
}
var screen = sdl.SetVideoMode(1400, 300, 32, 0)
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)
font := ttf.OpenFont("euler.otf", 24)
if font == nil {
panic(sdl.GetError())
}
black := sdl.Color{0, 0, 0, 0}
text := ttf.RenderUTF8_Blended(font, "!!", black)
fmt.Println(text.Bounds())
sdl.WM_SetCaption("Go-SDL SDL Test", "")
running := true
num := NewNumberShower("b+c", "", "euler.otf", 24, 0)
denom := NewNumberShower("a", "", "euler.otf", 24, 0)
testy := NewFractionShower(num, denom, "euler.otf", 24, 0)
testy.CursorPosition = 3
testy.RenderEmptyIndextxt = true
str := ""
for running {
switch e := sdl.PollEvent().(type) {
case *sdl.QuitEvent:
running = false
break
case *sdl.KeyboardEvent:
if e.State == 1 {
str = handlekeypress2(e.Keysym, str)
fmt.Println("rendering string", str)
text = ttf.RenderUTF8_Blended(font, str, black)
}
}
screen.FillRect(nil, 0xFFFFFF)
screen.Blit(&sdl.Rect{23, 0, 0, 0}, testy.Render(), nil)
screen.Flip()
sdl.Delay(5)
}
}
func NewScreen(w, h int) *Screen {
if sdl.Init(sdl.INIT_EVERYTHING) != 0 {
log.Fatal("failed to init sdl", sdl.GetError())
return nil
}
if ttf.Init() != 0 {
log.Fatal("failed to init ttf", sdl.GetError())
return nil
}
var ctx Screen
if err := ctx.setSurface(w, h); err != nil {
log.Fatal(err)
}
var vInfo = sdl.GetVideoInfo()
log.Println("HW_available = ", vInfo.HW_available)
log.Println("WM_available = ", vInfo.WM_available)
log.Println("Video_mem = ", vInfo.Video_mem, "kb")
/* title := "Subtitle Player" */
title := os.Args[0]
icon := "" // path/to/icon
sdl.WM_SetCaption(title, icon)
sdl.EnableUNICODE(1)
ctx.fps = opt.fps
err := ctx.setFont(opt.fontPath, opt.fontSize)
if err != nil {
log.Fatal("failed to set default font")
return nil
}
ctx.debugFont = ttf.OpenFont(DFLT_FONT_PATH, 20)
if ctx.debugFont == nil {
errMsg := fmt.Sprintf("failed to open debug font: %s",
sdl.GetError())
/* return errors.New(errMsg) */
log.Fatal(errMsg)
}
ctx.debugLineHeight = uint16(ctx.debugFont.LineSkip())
ctx.updateC = make(chan int)
return &ctx
}
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 (c *Screen) setFont(path string, size int) error {
if c.font != nil {
c.font.Close()
}
if size < 10 {
size = 10
}
c.font = ttf.OpenFont(path, size)
if c.font == nil {
errMsg := fmt.Sprintf("failed to open font from %s: %s",
path, sdl.GetError())
return errors.New(errMsg)
}
/* c.font.SetStyle(ttf.STYLE_UNDERLINE) */
c.fontSize = size
c.fontPath = path
c.lineHeight = uint16(c.font.LineSkip())
log.Printf("fontsize=%d lineheight=%d\n", c.fontSize, c.lineHeight)
return nil
}
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 (self MathShower) Render() *sdl.Surface {
switch self.Subtype {
case "Number":
font1 := ttf.OpenFont(self.Fontname, self.Fontsize())
defer font1.Close()
txt := ttf.RenderUTF8_Blended(font1, self.Txt, self.Color)
if self.Indextxt == "" && !self.RenderEmptyIndextxt {
mainsurface := sdl.CreateRGBSurface(0, txt.Bounds().Max.X,
txt.Bounds().Max.Y, 32, 0, 0, 0, 0)
mainsurface.FillRect(nil, 0xFFFFFF)
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, txt, nil)
if self.CursorPosition != -1 && self.CursorPosition < len(self.Txt) {
curssurf := RenderCursorSurface(font1)
if self.CursorPosition == 0 {
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, curssurf, nil)
} else if self.CursorPosition == len(self.Txt) {
mainsurface.Blit(&sdl.Rect{int16(mainsurface.Bounds().Max.X - curssurf.Bounds().Max.X), 0, 0, 0},
curssurf, nil)
} else {
inputwhere, _, _ := font1.SizeUTF8(self.Txt[:self.CursorPosition])
mainsurface.Blit(&sdl.Rect{int16(inputwhere), 0, 0, 0}, curssurf, nil)
}
}
return mainsurface
} else if self.RenderEmptyIndextxt {
font2 := ttf.OpenFont(self.Fontname, self.Fontsize()-int(float64(self.Fontsize())*0.5))
defer font2.Close()
if font2 == nil {
panic(sdl.GetError())
}
subtext := ttf.RenderUTF8_Blended(font2, self.Indextxt, self.Color)
mainsurface := sdl.CreateRGBSurface(0, txt.Bounds().Max.X+subtext.Bounds().Max.X,
txt.Bounds().Max.Y+subtext.Bounds().Max.Y, 32, 0, 0, 0, 0)
mainsurface.FillRect(nil, 0xFFFFFF)
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, txt, nil)
overmainsurface := sdl.CreateRGBSurface(0, txt.Bounds().Max.X, txt.Bounds().Max.Y, 32,
0, 0, 0, 0)
overmainsurface.FillRect(nil, 0xFFFFFF)
overmainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, txt, nil)
if self.CursorPosition != -1 && self.CursorPosition < len(self.Txt) {
curssurf := RenderCursorSurface(font1)
if self.CursorPosition == 0 {
overmainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, curssurf, nil)
} else if self.CursorPosition == len(self.Txt) {
overmainsurface.Blit(&sdl.Rect{int16(overmainsurface.Bounds().Max.X - curssurf.Bounds().Max.X), 0, 0, 0},
curssurf, nil)
} else {
inputwhere, _, _ := font1.SizeUTF8(self.Txt[:self.CursorPosition])
overmainsurface.Blit(&sdl.Rect{int16(inputwhere), 0, 0, 0}, curssurf, nil)
}
}
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, overmainsurface, nil)
submainsurface := sdl.CreateRGBSurface(0, font2.Height()+2+2, font2.Height()+2+2,
32, 0, 0, 0, 0)
subsubmainsurface := sdl.CreateRGBSurface(0, font2.Height()+2, font2.Height()+2,
32, 0, 0, 0, 0)
submainsurface.FillRect(nil, 0x0)
subsubmainsurface.FillRect(nil, 0xFFFFFF)
if self.CursorPosition == len(self.Txt) {
curssurf := RenderCursorSurface(font2)
subsubmainsurface.Blit(&sdl.Rect{2, 1, 0, 0}, curssurf, nil)
}
submainsurface.Blit(&sdl.Rect{1, 1, 0, 0}, subsubmainsurface, nil)
mainsurface.Blit(&sdl.Rect{int16(txt.Bounds().Max.X), int16(font1.Ascent()), 0, 0},
submainsurface, nil)
return mainsurface
}
font2 := ttf.OpenFont(self.Fontname, self.Fontsize()-int(float64(self.Fontsize())*0.5))
defer font2.Close()
if font2 == nil {
panic(sdl.GetError())
}
subtext := ttf.RenderUTF8_Blended(font2, self.Indextxt, self.Color)
mainsurface := sdl.CreateRGBSurface(0, txt.Bounds().Max.X+subtext.Bounds().Max.X,
txt.Bounds().Max.Y+subtext.Bounds().Max.Y, 32, 0, 0, 0, 0)
mainsurface.FillRect(nil, 0xFFFFFF)
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, txt, nil)
overmainsurface := sdl.CreateRGBSurface(0, txt.Bounds().Max.X, txt.Bounds().Max.Y, 32,
0, 0, 0, 0)
overmainsurface.FillRect(nil, 0xFFFFFF)
overmainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, txt, nil)
if self.CursorPosition != -1 && self.CursorPosition < len(self.Txt) {
curssurf := RenderCursorSurface(font1)
if self.CursorPosition == 0 {
overmainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, curssurf, nil)
} else if self.CursorPosition == len(self.Txt) {
overmainsurface.Blit(&sdl.Rect{int16(overmainsurface.Bounds().Max.X - curssurf.Bounds().Max.X), 0, 0, 0},
curssurf, nil)
} else {
inputwhere, _, _ := font1.SizeUTF8(self.Txt[:self.CursorPosition])
overmainsurface.Blit(&sdl.Rect{int16(inputwhere), 0, 0, 0}, curssurf, nil)
}
}
mainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, overmainsurface, nil)
submainsurface := sdl.CreateRGBSurface(0, subtext.Bounds().Max.X, subtext.Bounds().Max.Y,
32, 0, 0, 0, 0)
submainsurface.FillRect(nil, 0xFFFFFF)
submainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, subtext, nil)
if self.CursorPosition >= len(self.Txt) {
Subcurspos := self.CursorPosition - len(self.Txt)
curssurf := RenderCursorSurface(font2)
if Subcurspos == 0 {
submainsurface.Blit(&sdl.Rect{0, 0, 0, 0}, curssurf, nil)
} else {
inputwhere, _, _ := font2.SizeUTF8(self.Indextxt[:Subcurspos])
submainsurface.Blit(&sdl.Rect{int16(inputwhere), 0, 0, 0}, curssurf, nil)
}
}
mainsurface.Blit(&sdl.Rect{int16(txt.Bounds().Max.X), int16(font1.Ascent()), 0, 0},
submainsurface, nil)
return mainsurface
case "Fraction":
numeratorsurf := (*self.Parts)[0].Render()
Denominatorsurf := (*self.Parts)[1].Render()
ysum := numeratorsurf.Bounds().Max.Y + Denominatorsurf.Bounds().Max.Y
maxx := numeratorsurf.Bounds().Max.X
if Denominatorsurf.Bounds().Max.X > maxx {
maxx = Denominatorsurf.Bounds().Max.X
}
mainsurface := sdl.CreateRGBSurface(0, maxx+6, ysum, 32,
0, 0, 0, 0)
mainsurface.FillRect(nil, 0xFFFFFF)
line := sdl.CreateRGBSurface(0, maxx+6, 1, 32, 0, 0, 0, 0)
line.FillRect(nil, 0x000000)
mainsurface.Blit(&sdl.Rect{int16(float64(maxx-numeratorsurf.Bounds().Max.X) / 2),
0, 0, 0}, numeratorsurf, nil)
mainsurface.Blit(&sdl.Rect{int16(float64(maxx-Denominatorsurf.Bounds().Max.X) / 2),
int16(numeratorsurf.Bounds().Max.Y), 0, 0}, Denominatorsurf, nil)
mainsurface.Blit(&sdl.Rect{0, int16(numeratorsurf.Bounds().Max.Y), 0, 0}, line, nil)
return mainsurface
}
var k *sdl.Surface
return k
}
