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 (i *ImagePanel) Draw(self Widget, ctx *nanovgo.Context) { cols, _ := i.gridSize() x := float32(i.x) y := float32(i.y) thumbSize := float32(i.thumbSize) for j, image := range i.images { pX := x + float32(i.margin+(j%cols)*(i.thumbSize+i.spacing)) pY := y + float32(i.margin+(j/cols)*(i.thumbSize+i.spacing)) imgW, imgH, _ := ctx.ImageSize(image.ImageID) var iw, ih, ix, iy float32 if imgW < imgH { iw = thumbSize ih = iw * float32(imgH) / float32(imgW) ix = 0 iy = -(ih - thumbSize) * 0.5 } else { ih = thumbSize iw = ih * float32(imgH) / float32(imgW) iy = 0 ix = -(iw - thumbSize) * 0.5 } imgPaint := nanovgo.ImagePattern(pX+ix, pY+iy, iw, ih, 0, image.ImageID, toF(i.mouseIndex == j, 1.0, 0.7)) ctx.BeginPath() ctx.RoundedRect(pX, pY, thumbSize, thumbSize, 5) ctx.SetFillPaint(imgPaint) ctx.Fill() shadowPaint := nanovgo.BoxGradient(pX-1, pY, thumbSize+2, thumbSize+2, 5, 3, nanovgo.MONO(0, 128), nanovgo.MONO(0, 0)) ctx.BeginPath() ctx.Rect(pX-5, pY-5, thumbSize+10, thumbSize+10) ctx.RoundedRect(pX, pY, thumbSize, thumbSize, 6) ctx.PathWinding(nanovgo.Hole) ctx.SetFillPaint(shadowPaint) ctx.Fill() ctx.BeginPath() ctx.RoundedRect(pX+0.5, pY+0.5, thumbSize-1, thumbSize-1, 4-0.5) ctx.SetStrokeWidth(1.0) ctx.SetStrokeColor(nanovgo.MONO(255, 80)) ctx.Stroke() } }
func (p *Popup) Draw(self Widget, ctx *nanovgo.Context) { p.RefreshRelativePlacement() if !p.visible { return } ds := float32(p.theme.WindowDropShadowSize) cr := float32(p.theme.WindowCornerRadius) px := float32(p.x) py := float32(p.y) pw := float32(p.w) ph := float32(p.h) ah := float32(p.anchorHeight) /* Draw a drop shadow */ shadowPaint := nanovgo.BoxGradient(px, py, pw, ph, cr*2, ds*2, p.theme.DropShadow, p.theme.Transparent) ctx.BeginPath() ctx.Rect(px-ds, py-ds, pw+ds*2, ph+ds*2) ctx.RoundedRect(px, py, pw, ph, cr) ctx.PathWinding(nanovgo.Hole) ctx.SetFillPaint(shadowPaint) ctx.Fill() /* Draw window */ ctx.BeginPath() ctx.RoundedRect(px, py, pw, ph, cr) ctx.MoveTo(px-15, py+ah) ctx.LineTo(px+1, py+ah-15) ctx.LineTo(px+1, py+ah+15) ctx.SetFillColor(p.theme.WindowPopup) ctx.Fill() p.WidgetImplement.Draw(self, ctx) }
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() }