func drawDropDown(ctx *nanovgo.Context, text string, x, y, w, h float32) {
var cornerRadius float32 = 4.0
bg := nanovgo.LinearGradient(x, y, x, y+h, nanovgo.RGBA(255, 255, 255, 16), nanovgo.RGBA(0, 0, 0, 16))
ctx.BeginPath()
ctx.RoundedRect(x+1, y+1, w-2, h-2, cornerRadius-1)
ctx.SetFillPaint(bg)
ctx.Fill()
ctx.BeginPath()
ctx.RoundedRect(x+0.5, y+0.5, w-1, h-1, cornerRadius-0.5)
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 48))
ctx.Stroke()
ctx.SetFontSize(20.0)
ctx.SetFontFace("sans")
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 160))
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
ctx.Text(x+h*0.3, y+h*0.5, text)
ctx.SetFontSize(h * 1.3)
ctx.SetFontFace("icons")
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 64))
ctx.SetTextAlign(nanovgo.AlignCenter | nanovgo.AlignMiddle)
ctx.Text(x+w-h*0.5, y+h*0.5, cpToUTF8(IconCHEVRONRIGHT))
}
func drawButton(ctx *nanovgo.Context, preicon int, text string, x, y, w, h float32, col nanovgo.Color) {
var cornerRadius float32 = 4.0
var iw float32
var alpha uint8
if isBlack(col) {
alpha = 16
} else {
alpha = 32
}
bg := nanovgo.LinearGradient(x, y, x, y+h, nanovgo.RGBA(255, 255, 255, alpha), nanovgo.RGBA(0, 0, 0, alpha))
ctx.BeginPath()
ctx.RoundedRect(x+1, y+1, w-2, h-2, cornerRadius-1)
if !isBlack(col) {
ctx.SetFillColor(col)
ctx.Fill()
}
ctx.SetFillPaint(bg)
ctx.Fill()
ctx.BeginPath()
ctx.RoundedRect(x+0.5, y+0.5, w-1, h-1, cornerRadius-0.5)
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 48))
ctx.Stroke()
ctx.SetFontSize(20.0)
ctx.SetFontFace("sans-bold")
tw, _ := ctx.TextBounds(0, 0, text)
if preicon != 0 {
ctx.SetFontSize(h * 1.3)
ctx.SetFontFace("icons")
iw, _ = ctx.TextBounds(0, 0, cpToUTF8(preicon))
iw += h * 0.15
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 96))
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
ctx.Text(x+w*0.5-tw*0.5-iw*0.75, y+h*0.5, cpToUTF8(preicon))
}
ctx.SetFontSize(20.0)
ctx.SetFontFace("sans-bold")
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
ctx.SetFillColor(nanovgo.RGBA(0, 0, 0, 160))
ctx.Text(x+w*0.5-tw*0.5+iw*0.25, y+h*0.5-1, text)
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 160))
ctx.Text(x+w*0.5-tw*0.5+iw*0.25, y+h*0.5, text)
}
func drawWindow(ctx *nanovgo.Context, title string, x, y, w, h float32) {
var cornerRadius float32 = 3.0
ctx.Save()
defer ctx.Restore()
// ctx.Reset();
// Window
ctx.BeginPath()
ctx.RoundedRect(x, y, w, h, cornerRadius)
ctx.SetFillColor(nanovgo.RGBA(28, 30, 34, 192))
// ctx.FillColor(nanovgo.RGBA(0,0,0,128));
ctx.Fill()
// Drop shadow
shadowPaint := nanovgo.BoxGradient(x, y+2, w, h, cornerRadius*2, 10, nanovgo.RGBA(0, 0, 0, 128), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(x-10, y-10, w+20, h+30)
ctx.RoundedRect(x, y, w, h, cornerRadius)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(shadowPaint)
ctx.Fill()
// Header
headerPaint := nanovgo.LinearGradient(x, y, x, y+15, nanovgo.RGBA(255, 255, 255, 8), nanovgo.RGBA(0, 0, 0, 16))
ctx.BeginPath()
ctx.RoundedRect(x+1, y+1, w-2, 30, cornerRadius-1)
ctx.SetFillPaint(headerPaint)
ctx.Fill()
ctx.BeginPath()
ctx.MoveTo(x+0.5, y+0.5+30)
ctx.LineTo(x+0.5+w-1, y+0.5+30)
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 32))
ctx.Stroke()
ctx.SetFontSize(18.0)
ctx.SetFontFace("sans-bold")
ctx.SetTextAlign(nanovgo.AlignCenter | nanovgo.AlignMiddle)
ctx.SetFontBlur(2)
ctx.SetFillColor(nanovgo.RGBA(0, 0, 0, 128))
ctx.Text(x+w/2, y+16+1, title)
ctx.SetFontBlur(0)
ctx.SetFillColor(nanovgo.RGBA(220, 220, 220, 160))
ctx.Text(x+w/2, y+16, title)
}
func drawSpinner(ctx *nanovgo.Context, cx, cy, r, t float32) {
a0 := 0.0 + t*6
a1 := nanovgo.PI + t*6
r0 := r
r1 := r * 0.75
ctx.Save()
defer ctx.Restore()
ctx.BeginPath()
ctx.Arc(cx, cy, r0, a0, a1, nanovgo.Clockwise)
ctx.Arc(cx, cy, r1, a1, a0, nanovgo.CounterClockwise)
ctx.ClosePath()
ax := cx + cosF(a0)*(r0+r1)*0.5
ay := cy + sinF(a0)*(r0+r1)*0.5
bx := cx + cosF(a1)*(r0+r1)*0.5
by := cy + sinF(a1)*(r0+r1)*0.5
paint := nanovgo.LinearGradient(ax, ay, bx, by, nanovgo.RGBA(0, 0, 0, 0), nanovgo.RGBA(0, 0, 0, 128))
ctx.SetFillPaint(paint)
ctx.Fill()
}
func drawSlider(ctx *nanovgo.Context, pos, x, y, w, h float32) {
cy := y + float32(int(h*0.5))
kr := float32(int(h * 0.25))
ctx.Save()
defer ctx.Restore()
// ctx.ClearState(vg);
// Slot
bg := nanovgo.BoxGradient(x, cy-2+1, w, 4, 2, 2, nanovgo.RGBA(0, 0, 0, 32), nanovgo.RGBA(0, 0, 0, 128))
ctx.BeginPath()
ctx.RoundedRect(x, cy-2, w, 4, 2)
ctx.SetFillPaint(bg)
ctx.Fill()
// Knob Shadow
bg = nanovgo.RadialGradient(x+float32(int(pos*w)), cy+1, kr-3, kr+3, nanovgo.RGBA(0, 0, 0, 64), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(x+float32(int(pos*w))-kr-5, cy-kr-5, kr*2+5+5, kr*2+5+5+3)
ctx.Circle(x+float32(int(pos*w)), cy, kr)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(bg)
ctx.Fill()
// Knob
knob := nanovgo.LinearGradient(x, cy-kr, x, cy+kr, nanovgo.RGBA(255, 255, 255, 16), nanovgo.RGBA(0, 0, 0, 16))
ctx.BeginPath()
ctx.Circle(x+float32(int(pos*w)), cy, kr-1)
ctx.SetFillColor(nanovgo.RGBA(40, 43, 48, 255))
ctx.Fill()
ctx.SetFillPaint(knob)
ctx.Fill()
ctx.BeginPath()
ctx.Circle(x+float32(int(pos*w)), cy, kr-0.5)
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 92))
ctx.Stroke()
}
func (w *Window) Draw(self Widget, ctx *nanovgo.Context) {
ds := float32(w.theme.WindowDropShadowSize)
cr := float32(w.theme.WindowCornerRadius)
hh := float32(w.theme.WindowHeaderHeight)
// Draw window
wx := float32(w.x)
wy := float32(w.y)
ww := float32(w.w)
wh := float32(w.h)
ctx.Save()
ctx.BeginPath()
ctx.RoundedRect(wx, wy, ww, wh, cr)
if w.mouseFocus {
ctx.SetFillColor(w.theme.WindowFillFocused)
} else {
ctx.SetFillColor(w.theme.WindowFillUnfocused)
}
ctx.Fill()
// Draw a drop shadow
shadowPaint := nanovgo.BoxGradient(wx, wy, ww, wh, cr*2, ds*2, w.theme.DropShadow, w.theme.Transparent)
ctx.BeginPath()
ctx.Rect(wx-ds, wy-ds, ww+ds*2, wh+ds*2)
ctx.RoundedRect(wx, wy, ww, wh, cr)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(shadowPaint)
ctx.Fill()
if w.title != "" {
headerPaint := nanovgo.LinearGradient(wx, wy, ww, wh+hh, w.theme.WindowHeaderGradientTop, w.theme.WindowHeaderGradientBot)
ctx.BeginPath()
ctx.RoundedRect(wx, wy, ww, hh, cr)
ctx.SetFillPaint(headerPaint)
ctx.Fill()
ctx.BeginPath()
ctx.RoundedRect(wx, wy, ww, wh, cr)
ctx.SetStrokeColor(w.theme.WindowHeaderSepTop)
ctx.Scissor(wx, wy, ww, 0.5)
ctx.Stroke()
ctx.ResetScissor()
ctx.BeginPath()
ctx.MoveTo(wx+0.5, wy+hh-1.5)
ctx.LineTo(wx+ww-0.5, wy+hh-1.5)
ctx.SetStrokeColor(w.theme.WindowHeaderSepTop)
ctx.Stroke()
ctx.SetFontSize(18.0)
ctx.SetFontFace(w.theme.FontBold)
ctx.SetTextAlign(nanovgo.AlignCenter | nanovgo.AlignMiddle)
ctx.SetFontBlur(2.0)
ctx.SetFillColor(w.theme.DropShadow)
ctx.Text(wx+ww*0.5, wy+hh*0.5, w.title)
ctx.SetFontBlur(0.0)
if w.focused {
ctx.SetFillColor(w.theme.WindowTitleFocused)
} else {
ctx.SetFillColor(w.theme.WindowTitleUnfocused)
}
ctx.Text(wx+ww*0.5, wy+hh*0.5-1, w.title)
}
ctx.Restore()
w.WidgetImplement.Draw(self, ctx)
}
func (c *ColorWheel) Draw(self Widget, ctx *nanovgo.Context) {
c.WidgetImplement.Draw(self, ctx)
if !c.visible {
return
}
x := float32(c.x)
y := float32(c.y)
w := float32(c.w)
h := float32(c.h)
ctx.Save()
defer ctx.Restore()
cx := x + w*0.5
cy := y + h*0.5
r1 := toF(w < h, w, h)*0.5 - 5.0
r0 := r1 * 0.75
aeps := 0.7 / r1 // half a pixel arc length in radians (2pi cancels out).
for i := 0; i < 6; i++ {
a0 := float32(i)/6.0*nanovgo.PI*2.0 - aeps
a1 := float32(i+1)/6.0*nanovgo.PI*2.0 + aeps
ctx.BeginPath()
ctx.Arc(cx, cy, r0, a0, a1, nanovgo.Clockwise)
ctx.Arc(cx, cy, r1, a1, a0, nanovgo.CounterClockwise)
ctx.ClosePath()
sin1, cos1 := sinCosF(a0)
sin2, cos2 := sinCosF(a1)
ax := cx + cos1*(r0+r1)*0.5
ay := cy + sin1*(r0+r1)*0.5
bx := cx + cos2*(r0+r1)*0.5
by := cy + sin2*(r0+r1)*0.5
color1 := nanovgo.HSLA(a0/(nanovgo.PI*2), 1.0, 0.55, 255)
color2 := nanovgo.HSLA(a1/(nanovgo.PI*2), 1.0, 0.55, 255)
paint := nanovgo.LinearGradient(ax, ay, bx, by, color1, color2)
ctx.SetFillPaint(paint)
ctx.Fill()
}
ctx.BeginPath()
ctx.Circle(cx, cy, r0-0.5)
ctx.Circle(cx, cy, r1+0.5)
ctx.SetStrokeColor(nanovgo.MONO(0, 64))
ctx.Stroke()
// Selector
ctx.Save()
defer ctx.Restore()
ctx.Translate(cx, cy)
ctx.Rotate(c.hue * nanovgo.PI * 2)
// Marker on
u := clampF(r1/50, 1.5, 4.0)
ctx.SetStrokeWidth(u)
ctx.BeginPath()
ctx.Rect(r0-1, -2*u, r1-r0+2, 4*u)
ctx.SetStrokeColor(nanovgo.MONO(255, 192))
ctx.Stroke()
paint := nanovgo.BoxGradient(r0-3, -5, r1-r0+6, 10, 2, 4, nanovgo.MONO(0, 128), nanovgo.MONO(0, 0))
ctx.BeginPath()
ctx.Rect(r0-2-10, -4-10, r1-r0+4+20, 8+20)
ctx.Rect(r0-2, -4, r1-r0+4, 8)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(paint)
ctx.Fill()
// Center triangle
r := r0 - 6
sin1, cos1 := sinCosF(120.0 / 180.0 * nanovgo.PI)
sin2, cos2 := sinCosF(-120.0 / 180.0 * nanovgo.PI)
ax := cos1 * r
ay := sin1 * r
bx := cos2 * r
by := sin2 * r
ctx.BeginPath()
ctx.MoveTo(r, 0)
ctx.LineTo(ax, ay)
ctx.LineTo(bx, by)
ctx.ClosePath()
triPaint1 := nanovgo.LinearGradient(r, 0, ax, ay, nanovgo.HSL(c.hue, 1.0, 0.5), nanovgo.MONO(255, 255))
ctx.SetFillPaint(triPaint1)
ctx.Fill()
triPaint2 := nanovgo.LinearGradient((r+ax)*0.5, ay*0.5, bx, by, nanovgo.MONO(0, 0), nanovgo.MONO(0, 255))
ctx.SetFillPaint(triPaint2)
ctx.Fill()
// selector circle on triangle
px, py := c.calculatePosition()
ctx.SetStrokeWidth(u)
ctx.BeginPath()
ctx.Circle(px, py, 2*u)
ctx.SetStrokeColor(nanovgo.MONO(255, 192))
ctx.Stroke()
}
func drawColorWheel(ctx *nanovgo.Context, x, y, w, h, t float32) {
var r0, r1, ax, ay, bx, by, aeps, r float32
hue := sinF(t * 0.12)
ctx.Save()
defer ctx.Restore()
/* ctx.BeginPath()
ctx.Rect(x,y,w,h)
ctx.FillColor(nanovgo.RGBA(255,0,0,128))
ctx.Fill()*/
cx := x + w*0.5
cy := y + h*0.5
if w < h {
r1 = w*0.5 - 5.0
} else {
r1 = h*0.5 - 5.0
}
r0 = r1 - 20.0
aeps = 0.5 / r1 // half a pixel arc length in radians (2pi cancels out).
for i := 0; i < 6; i++ {
a0 := float32(i)/6.0*nanovgo.PI*2.0 - aeps
a1 := float32(i+1.0)/6.0*nanovgo.PI*2.0 + aeps
ctx.BeginPath()
ctx.Arc(cx, cy, r0, a0, a1, nanovgo.Clockwise)
ctx.Arc(cx, cy, r1, a1, a0, nanovgo.CounterClockwise)
ctx.ClosePath()
ax = cx + cosF(a0)*(r0+r1)*0.5
ay = cy + sinF(a0)*(r0+r1)*0.5
bx = cx + cosF(a1)*(r0+r1)*0.5
by = cy + sinF(a1)*(r0+r1)*0.5
paint := nanovgo.LinearGradient(ax, ay, bx, by, nanovgo.HSLA(a0/(nanovgo.PI*2), 1.0, 0.55, 255), nanovgo.HSLA(a1/(nanovgo.PI*2), 1.0, 0.55, 255))
ctx.SetFillPaint(paint)
ctx.Fill()
}
ctx.BeginPath()
ctx.Circle(cx, cy, r0-0.5)
ctx.Circle(cx, cy, r1+0.5)
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 64))
ctx.SetStrokeWidth(1.0)
ctx.Stroke()
// Selector
ctx.Translate(cx, cy)
ctx.Rotate(hue * nanovgo.PI * 2)
// Marker on
ctx.SetStrokeWidth(2.0)
ctx.BeginPath()
ctx.Rect(r0-1, -3, r1-r0+2, 6)
ctx.SetStrokeColor(nanovgo.RGBA(255, 255, 255, 192))
ctx.Stroke()
paint := nanovgo.BoxGradient(r0-3, -5, r1-r0+6, 10, 2, 4, nanovgo.RGBA(0, 0, 0, 128), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(r0-2-10, -4-10, r1-r0+4+20, 8+20)
ctx.Rect(r0-2, -4, r1-r0+4, 8)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(paint)
ctx.Fill()
// Center triangle
r = r0 - 6
ax = cosF(120.0/180.0*nanovgo.PI) * r
ay = sinF(120.0/180.0*nanovgo.PI) * r
bx = cosF(-120.0/180.0*nanovgo.PI) * r
by = sinF(-120.0/180.0*nanovgo.PI) * r
ctx.BeginPath()
ctx.MoveTo(r, 0)
ctx.LineTo(ax, ay)
ctx.LineTo(bx, by)
ctx.ClosePath()
paint = nanovgo.LinearGradient(r, 0, ax, ay, nanovgo.HSLA(hue, 1.0, 0.5, 255), nanovgo.RGBA(255, 255, 255, 255))
ctx.SetFillPaint(paint)
ctx.Fill()
paint = nanovgo.LinearGradient((r+ax)*0.5, (0+ay)*0.5, bx, by, nanovgo.RGBA(0, 0, 0, 0), nanovgo.RGBA(0, 0, 0, 255))
ctx.SetFillPaint(paint)
ctx.Fill()
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 64))
ctx.Stroke()
// Select circle on triangle
ax = cosF(120.0/180.0*nanovgo.PI) * r * 0.3
ay = sinF(120.0/180.0*nanovgo.PI) * r * 0.4
ctx.SetStrokeWidth(2.0)
ctx.BeginPath()
ctx.Circle(ax, ay, 5)
ctx.SetStrokeColor(nanovgo.RGBA(255, 255, 255, 192))
ctx.Stroke()
paint = nanovgo.RadialGradient(ax, ay, 7, 9, nanovgo.RGBA(0, 0, 0, 64), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(ax-20, ay-20, 40, 40)
ctx.Circle(ax, ay, 7)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(paint)
ctx.Fill()
}
func drawThumbnails(ctx *nanovgo.Context, x, y, w, h float32, images []int, t float32) {
var cornerRadius float32 = 3.0
var thumb float32 = 60.0
var arry float32 = 30.5
stackh := float32(len(images)/2)*(thumb+10) + 10
u := (1 + cosF(t*0.5)) * 0.5
u2 := (1 - cosF(t*0.2)) * 0.5
ctx.Save()
defer ctx.Restore()
// Drop shadow
shadowPaint := nanovgo.BoxGradient(x, y+4, w, h, cornerRadius*2, 20, nanovgo.RGBA(0, 0, 0, 128), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(x-10, y-10, w+20, h+30)
ctx.RoundedRect(x, y, w, h, cornerRadius)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(shadowPaint)
ctx.Fill()
// Window
ctx.BeginPath()
ctx.RoundedRect(x, y, w, h, cornerRadius)
ctx.MoveTo(x-10, y+arry)
ctx.LineTo(x+1, y+arry-11)
ctx.LineTo(x+1, y+arry+11)
ctx.SetFillColor(nanovgo.RGBA(200, 200, 200, 255))
ctx.Fill()
ctx.Block(func() {
ctx.Scissor(x, y, w, h)
ctx.Translate(0, -(stackh-h)*u)
dv := 1.0 / float32(len(images)-1)
for i, imageID := range images {
tx := x + 10.0
ty := y + 10.0
tx += float32(i%2) * (thumb + 10.0)
ty += float32(i/2) * (thumb + 10.0)
imgW, imgH, _ := ctx.ImageSize(imageID)
var iw, ih, ix, iy float32
if imgW < imgH {
iw = thumb
ih = iw * float32(imgH) / float32(imgW)
ix = 0
iy = -(ih - thumb) * 0.5
} else {
ih = thumb
iw = ih * float32(imgW) / float32(imgH)
ix = -(iw - thumb) * 0.5
iy = 0
}
v := float32(i) * dv
a := clampF((u2-v)/dv, 0, 1)
if a < 1.0 {
drawSpinner(ctx, tx+thumb/2, ty+thumb/2, thumb*0.25, t)
}
imgPaint := nanovgo.ImagePattern(tx+ix, ty+iy, iw, ih, 0.0/180.0*nanovgo.PI, imageID, a)
ctx.BeginPath()
ctx.RoundedRect(tx, ty, thumb, thumb, 5)
ctx.SetFillPaint(imgPaint)
ctx.Fill()
shadowPaint := nanovgo.BoxGradient(tx-1, ty, thumb+2, thumb+2, 5, 3, nanovgo.RGBA(0, 0, 0, 128), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(tx-5, ty-5, thumb+10, thumb+10)
ctx.RoundedRect(tx, ty, thumb, thumb, 6)
ctx.PathWinding(nanovgo.Hole)
ctx.SetFillPaint(shadowPaint)
ctx.Fill()
ctx.BeginPath()
ctx.RoundedRect(tx+0.5, ty+0.5, thumb-1, thumb-1, 4-0.5)
ctx.SetStrokeWidth(1.0)
ctx.SetStrokeColor(nanovgo.RGBA(255, 255, 255, 192))
ctx.Stroke()
}
})
// Hide fades
fadePaint := nanovgo.LinearGradient(x, y, x, y+6, nanovgo.RGBA(200, 200, 200, 255), nanovgo.RGBA(200, 200, 200, 0))
ctx.BeginPath()
ctx.Rect(x+4, y, w-8, 6)
ctx.SetFillPaint(fadePaint)
ctx.Fill()
fadePaint = nanovgo.LinearGradient(x, y+h, x, y+h-6, nanovgo.RGBA(200, 200, 200, 255), nanovgo.RGBA(200, 200, 200, 0))
ctx.BeginPath()
ctx.Rect(x+4, y+h-6, w-8, 6)
ctx.SetFillPaint(fadePaint)
ctx.Fill()
// Scroll bar
shadowPaint = nanovgo.BoxGradient(x+w-12+1, y+4+1, 8, h-8, 3, 4, nanovgo.RGBA(0, 0, 0, 32), nanovgo.RGBA(0, 0, 0, 92))
ctx.BeginPath()
ctx.RoundedRect(x+w-12, y+4, 8, h-8, 3)
ctx.SetFillPaint(shadowPaint)
// ctx.FillColor(ctx.RGBA(255,0,0,128));
ctx.Fill()
scrollH := (h / stackh) * (h - 8)
shadowPaint = nanovgo.BoxGradient(x+w-12-1, y+4+(h-8-scrollH)*u-1, 8, scrollH, 3, 4, nanovgo.RGBA(220, 220, 220, 255), nanovgo.RGBA(128, 128, 128, 255))
ctx.BeginPath()
ctx.RoundedRect(x+w-12+1, y+4+1+(h-8-scrollH)*u, 8-2, scrollH-2, 2)
ctx.SetFillPaint(shadowPaint)
// ctx.FillColor(ctx.RGBA(0,0,0,128));
ctx.Fill()
}
func drawGraph(ctx *nanovgo.Context, x, y, w, h, t float32) {
var sx, sy [6]float32
dx := w / 5.0
samples := []float32{
(1 + sinF(t*1.2345+cosF(t*0.33457)*0.44)) * 0.5,
(1 + sinF(t*0.68363+cosF(t*1.3)*1.55)) * 0.5,
(1 + sinF(t*1.1642+cosF(t*0.33457)*1.24)) * 0.5,
(1 + sinF(t*0.56345+cosF(t*1.63)*0.14)) * 0.5,
(1 + sinF(t*1.6245+cosF(t*0.254)*0.3)) * 0.5,
(1 + sinF(t*0.345+cosF(t*0.03)*0.6)) * 0.5,
}
for i := 0; i < 6; i++ {
sx[i] = x + float32(i)*dx
sy[i] = y + h*samples[i]*0.8
}
// Graph background
bg := nanovgo.LinearGradient(x, y, x, y+h, nanovgo.RGBA(0, 160, 192, 0), nanovgo.RGBA(0, 160, 192, 64))
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0])
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1], sx[i]-dx*0.5, sy[i], sx[i], sy[i])
}
ctx.LineTo(x+w, y+h)
ctx.LineTo(x, y+h)
ctx.SetFillPaint(bg)
ctx.Fill()
// Graph line
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0]+2)
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1]+2, sx[i]-dx*0.5, sy[i]+2, sx[i], sy[i]+2)
}
ctx.SetStrokeColor(nanovgo.RGBA(0, 0, 0, 32))
ctx.SetStrokeWidth(3.0)
ctx.Stroke()
ctx.BeginPath()
ctx.MoveTo(sx[0], sy[0])
for i := 1; i < 6; i++ {
ctx.BezierTo(sx[i-1]+dx*0.5, sy[i-1], sx[i]-dx*0.5, sy[i], sx[i], sy[i])
}
ctx.SetStrokeColor(nanovgo.RGBA(0, 160, 192, 255))
ctx.SetStrokeWidth(3.0)
ctx.Stroke()
// Graph sample pos
for i := 0; i < 6; i++ {
bg = nanovgo.RadialGradient(sx[i], sy[i]+2, 3.0, 8.0, nanovgo.RGBA(0, 0, 0, 32), nanovgo.RGBA(0, 0, 0, 0))
ctx.BeginPath()
ctx.Rect(sx[i]-10, sy[i]-10+2, 20, 20)
ctx.SetFillPaint(bg)
ctx.Fill()
}
ctx.BeginPath()
for i := 0; i < 6; i++ {
ctx.Circle(sx[i], sy[i], 4.0)
}
ctx.SetFillColor(nanovgo.RGBA(0, 160, 192, 255))
ctx.Fill()
ctx.BeginPath()
for i := 0; i < 6; i++ {
ctx.Circle(sx[i], sy[i], 2.0)
}
ctx.SetFillColor(nanovgo.RGBA(220, 220, 220, 255))
ctx.Fill()
ctx.SetStrokeWidth(1.0)
}
func drawEyes(ctx *nanovgo.Context, x, y, w, h, mx, my, t float32) {
ex := w * 0.23
ey := h * 0.5
lx := x + ex
ly := y + ey
rx := x + w - ex
ry := y + ey
var dx, dy, d, br float32
if ex < ey {
br = ex * 0.5
} else {
br = ey * 0.5
}
blink := float32(1.0 - math.Pow(float64(sinF(t*0.5)), 200)*0.8)
bg1 := nanovgo.LinearGradient(x, y+h*0.5, x+w*0.1, y+h, nanovgo.RGBA(0, 0, 0, 32), nanovgo.RGBA(0, 0, 0, 16))
ctx.BeginPath()
ctx.Ellipse(lx+3.0, ly+16.0, ex, ey)
ctx.Ellipse(rx+3.0, ry+16.0, ex, ey)
ctx.SetFillPaint(bg1)
ctx.Fill()
bg2 := nanovgo.LinearGradient(x, y+h*0.25, x+w*0.1, y+h, nanovgo.RGBA(220, 220, 220, 255), nanovgo.RGBA(128, 128, 128, 255))
ctx.BeginPath()
ctx.Ellipse(lx, ly, ex, ey)
ctx.Ellipse(rx, ry, ex, ey)
ctx.SetFillPaint(bg2)
ctx.Fill()
dx = (mx - rx) / (ex * 10)
dy = (my - ry) / (ey * 10)
d = sqrtF(dx*dx + dy*dy)
if d > 1.0 {
dx /= d
dy /= d
}
dx *= ex * 0.4
dy *= ey * 0.5
ctx.BeginPath()
ctx.Ellipse(lx+dx, ly+dy+ey*0.25*(1.0-blink), br, br*blink)
ctx.SetFillColor(nanovgo.RGBA(32, 32, 32, 255))
ctx.Fill()
dx = (mx - rx) / (ex * 10)
dy = (my - ry) / (ey * 10)
d = sqrtF(dx*dx + dy*dy)
if d > 1.0 {
dx /= d
dy /= d
}
dx *= ex * 0.4
dy *= ey * 0.5
ctx.BeginPath()
ctx.Ellipse(rx+dx, ry+dy+ey*0.25*(1.0-blink), br, br*blink)
ctx.SetFillColor(nanovgo.RGBA(32, 32, 32, 255))
ctx.Fill()
dx = (mx - rx) / (ex * 10)
dy = (my - ry) / (ey * 10)
d = sqrtF(dx*dx + dy*dy)
if d > 1.0 {
dx /= d
dy /= d
}
dx *= ex * 0.4
dy *= ey * 0.5
ctx.BeginPath()
ctx.Ellipse(rx+dx, ry+dy+ey*0.25*(1.0-blink), br, br*blink)
ctx.SetFillColor(nanovgo.RGBA(32, 32, 32, 255))
ctx.Fill()
gloss1 := nanovgo.RadialGradient(lx-ex*0.25, ly-ey*0.5, ex*0.1, ex*0.75, nanovgo.RGBA(255, 255, 255, 128), nanovgo.RGBA(255, 255, 255, 0))
ctx.BeginPath()
ctx.Ellipse(lx, ly, ex, ey)
ctx.SetFillPaint(gloss1)
ctx.Fill()
gloss2 := nanovgo.RadialGradient(rx-ex*0.25, ry-ey*0.5, ex*0.1, ex*0.75, nanovgo.RGBA(255, 255, 255, 128), nanovgo.RGBA(255, 255, 255, 0))
ctx.BeginPath()
ctx.Ellipse(rx, ry, ex, ey)
ctx.SetFillPaint(gloss2)
ctx.Fill()
}
func (b *Button) Draw(self Widget, ctx *nanovgo.Context) {
b.WidgetImplement.Draw(self, ctx)
bx := float32(b.x)
by := float32(b.y)
bw := float32(b.w)
bh := float32(b.h)
var gradTop nanovgo.Color
var gradBot nanovgo.Color
if b.pushed {
gradTop = b.theme.ButtonGradientTopPushed
gradBot = b.theme.ButtonGradientBotPushed
} else if b.mouseFocus && b.enabled {
gradTop = b.theme.ButtonGradientTopFocused
gradBot = b.theme.ButtonGradientBotFocused
} else {
gradTop = b.theme.ButtonGradientTopUnfocused
gradBot = b.theme.ButtonGradientBotUnfocused
}
ctx.BeginPath()
ctx.RoundedRect(bx+1.0, by+1.0, bw-2.0, bh-2.0, float32(b.theme.ButtonCornerRadius-1))
if b.backgroundColor.A != 0.0 {
bgColor := b.backgroundColor
bgColor.A = 1.0
ctx.SetFillColor(bgColor)
ctx.Fill()
if b.pushed {
gradTop.A = 0.8
gradBot.A = 0.8
} else {
a := 1 - b.backgroundColor.A
if !b.enabled {
a = a*0.5 + 0.5
}
gradTop.A = a
gradBot.A = a
}
}
bg := nanovgo.LinearGradient(bx, by, bx, by+bh, gradTop, gradBot)
ctx.SetFillPaint(bg)
ctx.Fill()
ctx.BeginPath()
var pOff float32 = 0.0
if b.pushed {
pOff = 1.0
}
ctx.RoundedRect(bx+0.5, by+1.5-pOff, bw-1.0, bh-2+pOff, float32(b.theme.ButtonCornerRadius))
ctx.SetStrokeColor(b.theme.BorderLight)
ctx.Stroke()
ctx.BeginPath()
ctx.RoundedRect(bx+0.5, by+0.5, bw-1.0, bh-2, float32(b.theme.ButtonCornerRadius))
ctx.SetStrokeColor(b.theme.BorderDark)
ctx.Stroke()
fontSize := float32(b.FontSize())
ctx.SetFontSize(fontSize)
ctx.SetFontFace(b.theme.FontBold)
caption := b.caption
tw, _ := ctx.TextBounds(0, 0, caption)
centerX := bx + bw*0.5
centerY := by + bh*0.5
textPosX := centerX - tw*0.5
textPosY := centerY - 1.0
textColor := b.TextColor()
if b.icon > 0 || b.imageIcon > 0 {
var iw, ih float32
if b.icon > 0 {
ih = fontSize * 1.5 / 2
ctx.SetFontSize(ih)
ctx.SetFontFace(b.theme.FontIcons)
iw, _ = ctx.TextBounds(0, 0, string([]rune{rune(b.icon)}))
} else if b.imageIcon > 0 {
ih = fontSize * 0.9
w, h, _ := ctx.ImageSize(b.imageIcon)
iw = float32(w) * ih / float32(h)
}
if b.caption != "" {
iw += float32(b.h) * 0.15
}
ctx.SetFillColor(textColor)
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
iconPosX := centerX
iconPosY := centerY - 1
switch b.iconPosition {
case ButtonIconLeftCentered:
iconPosX -= (tw + iw) * 0.5
textPosX += iw * 0.5
case ButtonIconRightCentered:
iconPosX -= iw * 0.5
textPosX += tw * 0.5
case ButtonIconLeft:
iconPosX = bx + 8.0
case ButtonIconRight:
iconPosX = bx + bw - iw - 8
}
if b.icon > 0 {
ctx.TextRune(iconPosX, iconPosY, []rune{rune(b.icon)})
} else {
var eOff float32 = 0.25
if b.enabled {
eOff = 0.5
}
imgPaint := nanovgo.ImagePattern(iconPosX, iconPosY-ih*0.5, iw, ih, 0, b.imageIcon, eOff)
ctx.SetFillPaint(imgPaint)
ctx.Fill()
}
}
ctx.SetFontSize(fontSize)
ctx.SetFontFace(b.theme.FontBold)
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
ctx.SetFillColor(b.theme.TextColorShadow)
ctx.Text(textPosX, textPosY, caption)
ctx.SetFillColor(textColor)
ctx.Text(textPosX, textPosY+1.0, caption)
}