// parts.DrawPaint overrides
func (b *SplitterBar) Paint(c gxui.Canvas) {
r := b.outer.Size().Rect()
c.DrawRect(r, gxui.CreateBrush(b.backgroundColor))
if b.foregroundColor != b.backgroundColor {
c.DrawRect(r.ContractI(1), gxui.CreateBrush(b.foregroundColor))
}
}
func (d *treeButton) Paint(canvas gxui.Canvas) {
style := d.Style()
rect := d.Size().Rect()
poly := gxui.Polygon{
{Position: math.Point{
X: rect.Min.X,
Y: rect.Max.Y,
}},
{Position: math.Point{
X: rect.Min.X,
Y: rect.Min.Y,
}},
{Position: math.Point{
X: rect.Max.X,
Y: rect.Min.Y,
}},
{Position: math.Point{
X: rect.Max.X,
Y: rect.Max.Y,
}},
}
canvas.DrawPolygon(poly, gxui.TransparentPen, style.Brush)
d.PaintChildren.Paint(canvas)
}
func drawMoon(canvas gxui.Canvas, center math.Point, radius float32) {
c := 40
p := make(gxui.Polygon, c*2)
for i := 0; i < c; i++ {
frac := float32(i) / float32(c)
α := math.Lerpf(math.Pi*1.2, math.Pi*-0.2, frac)
p[i] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(radius*math.Sinf(α)),
Y: center.Y + int(radius*math.Cosf(α)),
},
RoundedRadius: 0,
}
}
for i := 0; i < c; i++ {
frac := float32(i) / float32(c)
α := math.Lerpf(math.Pi*-0.2, math.Pi*1.2, frac)
r := math.Lerpf(radius, radius*0.5, math.Sinf(frac*math.Pi))
p[i+c] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(r*math.Sinf(α)),
Y: center.Y + int(r*math.Cosf(α)),
},
RoundedRadius: 0,
}
}
canvas.DrawPolygon(p, gxui.CreatePen(3, gxui.Gray80), gxui.CreateBrush(gxui.Gray40))
}
// mixin.List overrides
func (l *DropDownList) Paint(c gxui.Canvas) {
l.DropDownList.Paint(c)
if l.HasFocus() || l.ListShowing() {
r := l.Size().Rect().ContractI(1)
c.DrawRoundedRect(r, 3.0, 3.0, 3.0, 3.0, l.theme.FocusedStyle.Pen, l.theme.FocusedStyle.Brush)
}
}
func (b *menuButton) Paint(canvas gxui.Canvas) {
style := b.Style()
if l := b.Label(); l != nil {
l.SetColor(style.FontColor)
}
rect := b.Size().Rect()
poly := gxui.Polygon{
{Position: math.Point{
X: rect.Min.X,
Y: rect.Max.Y,
}},
{Position: math.Point{
X: rect.Min.X,
Y: rect.Min.Y,
}},
{Position: math.Point{
X: rect.Max.X,
Y: rect.Min.Y,
}},
{Position: math.Point{
X: rect.Max.X,
Y: rect.Max.Y,
}},
}
canvas.DrawPolygon(poly, gxui.TransparentPen, style.Brush)
b.PaintChildren.Paint(canvas)
canvas.DrawLines(poly, style.Pen)
}
// mixins.CodeEditor overrides
func (t *CodeEditor) Paint(c gxui.Canvas) {
t.CodeEditor.Paint(c)
if t.HasFocus() {
r := t.Size().Rect()
c.DrawRoundedRect(r, 3, 3, 3, 3, t.theme.FocusedStyle.Pen, t.theme.FocusedStyle.Brush)
}
}
// mixins.CodeEditor overrides
func (e *editor) Paint(c gxui.Canvas) {
e.CodeEditor.Paint(c)
if e.HasFocus() {
r := e.Size().Rect()
c.DrawRoundedRect(r, 3, 3, 3, 3, e.theme.FocusedStyle.Pen, e.theme.FocusedStyle.Brush)
}
}
func (b *ProgressBar) PaintProgress(c gxui.Canvas, r math.Rect, frac float32) {
r.Max.X = math.Lerp(r.Min.X, r.Max.X, frac)
c.DrawRect(r, gxui.CreateBrush(gxui.Gray50))
c.Push()
c.AddClip(r)
c.DrawCanvas(b.chevrons, math.Point{X: b.scroll})
c.Pop()
}
func (p *PanelHolder) Paint(c gxui.Canvas) {
panel := p.SelectedPanel()
if panel != nil {
bounds := p.Children().Find(panel).Bounds()
c.DrawRoundedRect(bounds, 0.0, 0.0, 3.0, 3.0, p.theme.PanelBackgroundStyle.Pen, p.theme.PanelBackgroundStyle.Brush)
}
p.PanelHolder.Paint(c)
}
// mixins.TextBox overrides
func (t *TextBox) Paint(c gxui.Canvas) {
t.TextBox.Paint(c)
if t.HasFocus() {
r := t.Size().Rect()
s := t.theme.FocusedStyle
c.DrawRoundedRect(r, 3, 3, 3, 3, s.Pen, s.Brush)
}
}
func (f *FSLocator) Paint(c gxui.Canvas) {
f.LinearLayout.Paint(c)
if f.HasFocus() {
r := f.Size().Rect()
s := f.theme.FocusedStyle
c.DrawRoundedRect(r, 3, 3, 3, 3, s.Pen, s.Brush)
}
}
func (i *Image) Paint(c gxui.Canvas) {
r := i.outer.Size().Rect()
i.PaintBackground(c, r)
switch {
case i.texture != nil:
c.DrawTexture(i.texture, i.calculateDrawRect())
case i.canvas != nil:
c.DrawCanvas(i.canvas, math.ZeroPoint)
}
i.PaintBorder(c, r)
}
func (i *Image) SetCanvas(canvas gxui.Canvas) {
if !canvas.IsComplete() {
panic("SetCanvas() called with an incomplete canvas")
}
if i.canvas != canvas {
i.canvas = canvas
i.texture = nil
i.outer.Relayout()
}
}
func (t *DefaultTextBoxLine) PaintText(c gxui.Canvas) {
runes := []rune(t.textbox.controller.Line(t.lineIndex))
f := t.textbox.font
offsets := f.Layout(&gxui.TextBlock{
Runes: runes,
AlignRect: t.Size().Rect().OffsetX(t.caretWidth),
H: gxui.AlignLeft,
V: gxui.AlignBottom,
})
for i, offset := range offsets {
offsets[i] = offset.AddX(-t.offset)
}
c.DrawRunes(f, runes, offsets, t.textbox.textColor)
}
func (l *CodeEditorLine) PaintBorders(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
offsets := info.GlyphOffsets
for _, layer := range l.ce.layers {
if layer != nil && layer.BorderColor() != nil {
color := *layer.BorderColor()
interval.Visit(layer.Spans(), info.LineSpan, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
r := math.CreateRect(offsets[s].X, 0, offsets[e-1].X+info.GlyphWidth, info.LineHeight)
c.DrawRoundedRect(r, 3, 3, 3, 3, gxui.CreatePen(0.5, color), gxui.TransparentBrush)
})
}
}
}
// parts.DrawPaint overrides
func (l *Label) Paint(c gxui.Canvas) {
r := l.outer.Size().Rect()
t := l.text
if !l.multiline {
t = strings.Replace(t, "\n", " ", -1)
}
runes := []rune(t)
offsets := l.font.Layout(&gxui.TextBlock{
Runes: runes,
AlignRect: r,
H: l.horizontalAlignment,
V: l.verticalAlignment,
})
c.DrawRunes(l.font, runes, offsets, l.color)
}
func drawStar(canvas gxui.Canvas, center math.Point, radius, rotation float32, points int) {
p := make(gxui.Polygon, points*2)
for i := 0; i < points*2; i++ {
frac := float32(i) / float32(points*2)
α := frac*math.TwoPi + rotation
r := []float32{radius, radius / 2}[i&1]
p[i] = gxui.PolygonVertex{
Position: math.Point{
X: center.X + int(r*math.Cosf(α)),
Y: center.Y + int(r*math.Sinf(α)),
},
RoundedRadius: []float32{0, 50}[i&1],
}
}
canvas.DrawPolygon(p, gxui.CreatePen(3, gxui.Red), gxui.CreateBrush(gxui.Yellow))
}
func (l *CodeEditorLine) PaintBackgroundSpans(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
offsets := info.GlyphOffsets
remaining := interval.IntDataList{info.LineSpan}
for _, layer := range l.ce.layers {
if layer != nil && layer.BackgroundColor() != nil {
color := *layer.BackgroundColor()
for _, span := range layer.Spans().Overlaps(info.LineSpan) {
interval.Visit(&remaining, span, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
r := math.CreateRect(offsets[s].X, 0, offsets[e-1].X+info.GlyphWidth, info.LineHeight)
c.DrawRoundedRect(r, 3, 3, 3, 3, gxui.TransparentPen, gxui.Brush{Color: color})
})
interval.Remove(&remaining, span)
}
}
}
}
func (t *PanelTab) Paint(c gxui.Canvas) {
s := t.Size()
var style Style
switch {
case t.IsMouseDown(gxui.MouseButtonLeft) && t.IsMouseOver():
style = t.theme.TabPressedStyle
case t.IsMouseOver():
style = t.theme.TabOverStyle
default:
style = t.theme.TabDefaultStyle
}
if l := t.Label(); l != nil {
l.SetColor(style.FontColor)
}
c.DrawRoundedRect(s.Rect(), 5.0, 5.0, 0.0, 0.0, style.Pen, style.Brush)
if t.HasFocus() {
style = t.theme.FocusedStyle
r := math.CreateRect(1, 1, s.W-1, s.H-1)
c.DrawRoundedRect(r, 4.0, 4.0, 0.0, 0.0, style.Pen, style.Brush)
}
if t.active {
style = t.theme.TabActiveHighlightStyle
r := math.CreateRect(1, s.H-1, s.W-1, s.H)
c.DrawRect(r, style.Brush)
}
t.Button.Paint(c)
}
func (l *CodeEditorLine) PaintGlyphs(c gxui.Canvas, info CodeEditorLinePaintInfo) {
start, _ := info.LineSpan.Span()
runes, offsets, font := info.Runes, info.GlyphOffsets, info.Font
remaining := interval.IntDataList{info.LineSpan}
for _, layer := range l.ce.layers {
if layer != nil && layer.Color() != nil {
color := *layer.Color()
for _, span := range layer.Spans().Overlaps(info.LineSpan) {
interval.Visit(&remaining, span, func(vs, ve uint64, _ int) {
s, e := vs-start, ve-start
c.DrawRunes(font, runes[s:e], offsets[s:e], color)
})
interval.Remove(&remaining, span)
}
}
}
for _, span := range remaining {
s, e := span.Span()
s, e = s-start, e-start
c.DrawRunes(font, runes[s:e], offsets[s:e], l.ce.textColor)
}
}
func (p *PaintChildren) Paint(c gxui.Canvas) {
for i, v := range p.outer.Children() {
if v.Control.IsVisible() {
c.Push()
c.AddClip(v.Control.Size().Rect().Offset(v.Offset))
p.outer.PaintChild(c, v, i)
c.Pop()
}
}
}
func (o *BubbleOverlay) Paint(c gxui.Canvas) {
if !o.IsVisible() {
return
}
for _, child := range o.outer.Children() {
b := child.Bounds().Expand(o.outer.Padding())
t := o.targetPoint
a := o.arrowWidth / 2
var p gxui.Polygon
switch {
case t.X < b.Min.X:
/*
A-----------------B
G |
F |
E |
D-----------------C
*/
p = gxui.Polygon{
/*A*/ {Position: b.TL(), RoundedRadius: 5},
/*B*/ {Position: b.TR(), RoundedRadius: 5},
/*C*/ {Position: b.BR(), RoundedRadius: 5},
/*D*/ {Position: b.BL(), RoundedRadius: 5},
/*E*/ {Position: math.Point{X: b.Min.X, Y: math.Clamp(t.Y+a, b.Min.Y+a, b.Max.Y)}, RoundedRadius: 0},
/*F*/ {Position: t, RoundedRadius: 0},
/*G*/ {Position: math.Point{X: b.Min.X, Y: math.Clamp(t.Y-a, b.Min.Y, b.Max.Y-a)}, RoundedRadius: 0},
}
// fmt.Printf("A: %+v\n", p)
case t.X > b.Max.X:
/*
A-----------------B
| C
| D
| E
G-----------------F
*/
p = gxui.Polygon{
/*A*/ {Position: b.TL(), RoundedRadius: 5},
/*B*/ {Position: b.TR(), RoundedRadius: 5},
/*C*/ {Position: math.Point{X: b.Max.X, Y: math.Clamp(t.Y-a, b.Min.Y, b.Max.Y-a)}, RoundedRadius: 0},
/*D*/ {Position: t, RoundedRadius: 0},
/*E*/ {Position: math.Point{X: b.Max.X, Y: math.Clamp(t.Y+a, b.Min.Y+a, b.Max.Y)}, RoundedRadius: 0},
/*F*/ {Position: b.BR(), RoundedRadius: 5},
/*G*/ {Position: b.BL(), RoundedRadius: 5},
}
// fmt.Printf("B: %+v\n", p)
case t.Y < b.Min.Y:
/*
C
/ \
A-----------B D-E
| |
| |
G-----------------F
*/
p = gxui.Polygon{
/*A*/ {Position: b.TL(), RoundedRadius: 5},
/*B*/ {Position: math.Point{X: math.Clamp(t.X-a, b.Min.X, b.Max.X-a), Y: b.Min.Y}, RoundedRadius: 0},
/*C*/ {Position: t, RoundedRadius: 0},
/*D*/ {Position: math.Point{X: math.Clamp(t.X+a, b.Min.X+a, b.Max.X), Y: b.Min.Y}, RoundedRadius: 0},
/*E*/ {Position: b.TR(), RoundedRadius: 5},
/*F*/ {Position: b.BR(), RoundedRadius: 5},
/*G*/ {Position: b.BL(), RoundedRadius: 5},
}
// fmt.Printf("C: %+v\n", p)
default:
/*
A-----------------B
| |
| |
G-----------F D-C
\ /
E
*/
p = gxui.Polygon{
/*A*/ {Position: b.TL(), RoundedRadius: 5},
/*B*/ {Position: b.TR(), RoundedRadius: 5},
/*C*/ {Position: b.BR(), RoundedRadius: 5},
/*D*/ {Position: math.Point{X: math.Clamp(t.X+a, b.Min.X+a, b.Max.X), Y: b.Max.Y}, RoundedRadius: 0},
/*E*/ {Position: t, RoundedRadius: 0},
/*F*/ {Position: math.Point{X: math.Clamp(t.X-a, b.Min.X, b.Max.X-a), Y: b.Max.Y}, RoundedRadius: 0},
/*G*/ {Position: b.BL(), RoundedRadius: 5},
}
// fmt.Printf("D: %+v\n", p)
}
c.DrawPolygon(p, o.pen, o.brush)
}
o.PaintChildren.Paint(c)
}
func (t *Tree) PaintUnexpandedSelection(c gxui.Canvas, r math.Rect) {
c.DrawRoundedRect(r, 2.0, 2.0, 2.0, 2.0, gxui.CreatePen(1, gxui.Gray50), gxui.TransparentBrush)
}
func (l *DropDownList) DrawSelection(c gxui.Canvas, r math.Rect) {
c.DrawRoundedRect(r, 2.0, 2.0, 2.0, 2.0, l.theme.HighlightStyle.Pen, l.theme.HighlightStyle.Brush)
}
// mixins.List overrides
func (l *Tree) PaintSelection(c gxui.Canvas, r math.Rect) {
s := l.theme.HighlightStyle
c.DrawRoundedRect(r, 2.0, 2.0, 2.0, 2.0, s.Pen, s.Brush)
}
func (b *ProgressBar) PaintProgress(c gxui.Canvas, r math.Rect, frac float32) {
r.Max.X = math.Lerp(r.Min.X, r.Max.X, frac)
c.DrawRect(r, gxui.CreateBrush(gxui.Gray50))
}
func (t *DefaultTextBoxLine) PaintSelection(c gxui.Canvas, top, bottom math.Point) {
r := math.Rect{Min: top, Max: bottom}.ExpandI(t.caretWidth / 2)
c.DrawRoundedRect(r, 1, 1, 1, 1, gxui.TransparentPen, gxui.Brush{Color: gxui.Gray40})
}
func (t *DefaultTextBoxLine) PaintCaret(c gxui.Canvas, top, bottom math.Point) {
r := math.Rect{Min: top, Max: bottom}.ExpandI(t.caretWidth / 2)
c.DrawRoundedRect(r, 1, 1, 1, 1, gxui.CreatePen(0.5, gxui.Gray70), gxui.WhiteBrush)
}
func (t *Tree) PaintMouseOverBackground(c gxui.Canvas, r math.Rect) {
c.DrawRoundedRect(r, 2.0, 2.0, 2.0, 2.0, gxui.TransparentPen, gxui.CreateBrush(gxui.Gray15))
}
func (b *BackgroundBorderPainter) PaintBorder(c gxui.Canvas, r math.Rect) {
if b.pen.Color.A != 0 && b.pen.Width != 0 {
w := b.pen.Width
c.DrawRoundedRect(r, w, w, w, w, b.pen, gxui.TransparentBrush)
}
}