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package x // import "hhvn.uk/hbspbar/x"
import (
"os"
"image"
"hhvn.uk/hbspbar/config"
"hhvn.uk/hbspbar/common"
"github.com/jezek/xgb"
"github.com/jezek/xgb/xproto"
"github.com/jezek/xgbutil"
"github.com/jezek/xgbutil/xgraphics"
"github.com/BurntSushi/freetype-go/freetype/truetype"
)
var InitErr error
var X *xgb.Conn
var XU *xgbutil.XUtil
var Screen *xproto.ScreenInfo
var font *truetype.Font
var tw, th int
var tbpad int
func init() {
var err error
X, err = xgb.NewConn()
if err != nil {
InitErr = err
return
}
XU, err = xgbutil.NewConnXgb(X)
if err != nil {
InitErr = err
return
}
setup := xproto.Setup(X)
Screen = setup.DefaultScreen(X)
read, err := os.Open(config.Font)
if err != nil {
InitErr = common.Perror("os.Open", err)
return
}
font, err = xgraphics.ParseFont(read)
if err != nil {
InitErr = common.Perror("xgraphics.ParseFont", err)
return
}
test := xgraphics.New(XU, image.Rect(0, 0, int(config.FontSize * 10), int(config.FontSize * 10)))
tw, th, _ = test.Text(0, 0, int2BGRA(config.Fg), config.FontSize, font, "X")
tbpad = (int(config.H) - th) / 2
}
func int2BGRA(argb uint32) (xgraphics.BGRA) {
return xgraphics.BGRA{
B: uint8( argb & 0x000000ff),
G: uint8((argb & 0x0000ff00) >> 8),
R: uint8((argb & 0x00ff0000) >> 16),
A: uint8((argb & 0xff000000) >> 24) }
}
func GraphicReInit(i **xgraphics.Image, r image.Rectangle) {
if *i != nil {
(*i).Destroy()
}
*i = xgraphics.New(XU, r)
}
func DrawText(i *xgraphics.Image, x int, col uint32, text string) (int, error) {
nx, _, err := i.Text(x, config.FontYPad,
int2BGRA(col), config.FontSize, font, text)
return nx - x, err
}
func TextWidth(text string) (int) {
return tw * len(text)
}
func DrawRect(i *xgraphics.Image, x, y, w, h int, c uint32, fill bool) {
col := int2BGRA(c)
var ix, iy int
for ix = x; ix < x + w; ix++ {
for iy = y; iy < y + h; iy++ {
if fill || ix == x || ix == x + w - 1 ||
iy == y || iy == y + h - 1 {
i.Set(ix, iy, col)
}
}
}
}
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