本文整理匯總了Golang中github.com/shibukawa/nanovgo.Context.TextBounds方法的典型用法代碼示例。如果您正苦於以下問題:Golang Context.TextBounds方法的具體用法?Golang Context.TextBounds怎麽用?Golang Context.TextBounds使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/shibukawa/nanovgo.Context
的用法示例。
在下文中一共展示了Context.TextBounds方法的11個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: PreferredSize
func (c *CheckBox) PreferredSize(self Widget, ctx *nanovgo.Context) (int, int) {
fw, fh := c.FixedSize()
if fw > 0 || fh > 0 {
return fw, fh
}
fontSize := float32(c.FontSize())
ctx.SetFontSize(fontSize)
ctx.SetFontFace(c.theme.FontNormal)
w, _ := ctx.TextBounds(0, 0, c.caption)
return int(w + 1.7*fontSize), int(fontSize * 1.3)
}
示例2: PreferredSize
func (w *Window) PreferredSize(self Widget, ctx *nanovgo.Context) (int, int) {
if w.buttonPanel != nil {
w.buttonPanel.SetVisible(false)
}
width, height := w.WidgetImplement.PreferredSize(self, ctx)
if w.buttonPanel != nil {
w.buttonPanel.SetVisible(true)
}
ctx.SetFontSize(18.0)
ctx.SetFontFace(w.theme.FontBold)
_, bounds := ctx.TextBounds(0, 0, w.title)
return maxI(width, int(bounds[2]-bounds[0])+20), maxI(height, int(bounds[3]-bounds[1]))
}
示例3: drawButton
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)
}
示例4: drawEditBoxNum
func drawEditBoxNum(ctx *nanovgo.Context, text, units string, x, y, w, h float32) {
drawEditBoxBase(ctx, x, y, w, h)
uw, _ := ctx.TextBounds(0, 0, units)
ctx.SetFontSize(18.0)
ctx.SetFontFace("sans")
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 64))
ctx.SetTextAlign(nanovgo.AlignRight | nanovgo.AlignMiddle)
ctx.Text(x+w-h*0.3, y+h*0.5, units)
ctx.SetFontSize(20.0)
ctx.SetFontFace("sans")
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 128))
ctx.SetTextAlign(nanovgo.AlignRight | nanovgo.AlignMiddle)
ctx.Text(x+w-uw-h*0.5, y+h*0.5, text)
}
示例5: PreferredSize
func (t *TextBox) PreferredSize(self Widget, ctx *nanovgo.Context) (int, int) {
sizeH := float32(t.FontSize()) * 1.4
var unitWidth, textWidth float32
ctx.SetFontSize(float32(t.FontSize()))
if t.unitImage > 0 {
w, h, _ := ctx.ImageSize(t.unitImage)
unitHeight := sizeH * 0.4
unitWidth = float32(w) * unitHeight / float32(h)
} else if t.units != "" {
unitWidth, _ = ctx.TextBounds(0, 0, t.units)
}
textWidth, _ = ctx.TextBounds(0, 0, string(t.editingText()))
sizeW := sizeH + textWidth + unitWidth
return int(sizeW), int(sizeH)
}
示例6: Draw
func (p *PopupButton) Draw(self Widget, ctx *nanovgo.Context) {
if !p.enabled && p.pushed {
p.pushed = false
}
p.popup.SetVisible(p.pushed)
p.Button.Draw(self, ctx)
if p.chevronIcon != 0 {
ctx.SetFillColor(p.TextColor())
ctx.SetFontSize(float32(p.FontSize()))
ctx.SetFontFace(p.theme.FontIcons)
ctx.SetTextAlign(nanovgo.AlignMiddle | nanovgo.AlignLeft)
fontString := string([]rune{rune(p.chevronIcon)})
iw, _ := ctx.TextBounds(0, 0, fontString)
px, py := p.Position()
w, h := p.Size()
ix := px + w - int(iw) - 8
iy := py + h/2 - 1
ctx.Text(float32(ix), float32(iy), fontString)
}
}
示例7: PreferredSize
func (b *Button) PreferredSize(self Widget, ctx *nanovgo.Context) (int, int) {
fontSize := float32(b.FontSize())
ctx.SetFontSize(fontSize)
ctx.SetFontFace(b.theme.FontBold)
tw, _ := ctx.TextBounds(0, 0, b.caption)
var iw float32
ih := fontSize
if b.icon > 0 {
ih *= 1.5 / 2
ctx.SetFontFace(b.theme.FontIcons)
ctx.SetFontSize(ih)
iw, _ = ctx.TextBounds(0, 0, string([]rune{rune(b.icon)}))
iw += float32(b.y) * 0.15
} else if b.imageIcon > 0 {
ih *= 0.9
w, h, _ := ctx.ImageSize(b.imageIcon)
iw = float32(w) * ih / float32(h)
}
return int(tw + iw + 20), int(fontSize) + 10
}
示例8: PreferredSize
func (l *Label) PreferredSize(self Widget, ctx *nanovgo.Context) (int, int) {
if l.caption == "" {
return 0, 0
}
ctx.SetFontSize(float32(l.FontSize()))
ctx.SetFontFace(l.Font())
width := 0
if l.FixedWidth() > 0 {
width = l.FixedWidth()
} else if l.columnWidth > 0 && l.wrap {
width = l.columnWidth
}
if width > 0 {
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignTop)
bounds := ctx.TextBoxBounds(0, 0, float32(width), l.caption)
return width, int(bounds[3] - bounds[1])
} else {
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignTop)
w, _ := ctx.TextBounds(0, 0, l.caption)
return int(w), l.Theme().StandardFontSize
}
}
示例9: drawParagraph
func drawParagraph(ctx *nanovgo.Context, x, y, width, height, mx, my float32) {
text := "This is longer chunk of text.\n \n Would have used lorem ipsum but she was busy jumping over the lazy dog with the fox and all the men who came to the aid of the party."
ctx.Save()
defer ctx.Restore()
ctx.SetFontSize(18.0)
ctx.SetFontFace("sans")
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignTop)
_, _, lineh := ctx.TextMetrics()
// The text break API can be used to fill a large buffer of rows,
// or to iterate over the text just few lines (or just one) at a time.
// The "next" variable of the last returned item tells where to continue.
runes := []rune(text)
var gx, gy float32
var gutter int
lnum := 0
for _, row := range ctx.TextBreakLinesRune(runes, width) {
hit := mx > x && mx < (x+width) && my >= y && my < (y+lineh)
ctx.BeginPath()
var alpha uint8
if hit {
alpha = 64
} else {
alpha = 16
}
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, alpha))
ctx.Rect(x, y, row.Width, lineh)
ctx.Fill()
ctx.SetFillColor(nanovgo.RGBA(255, 255, 255, 255))
ctx.TextRune(x, y, runes[row.StartIndex:row.EndIndex])
if hit {
var caretX float32
if mx < x+row.Width/2 {
caretX = x
} else {
caretX = x + row.Width
}
px := x
lineRune := runes[row.StartIndex:row.EndIndex]
glyphs := ctx.TextGlyphPositionsRune(x, y, lineRune)
for j, glyph := range glyphs {
x0 := glyph.X
var x1 float32
if j+1 < len(glyphs) {
x1 = glyphs[j+1].X
} else {
x1 = x + row.Width
}
gx = x0*0.3 + x1*0.7
if mx >= px && mx < gx {
caretX = glyph.X
}
px = gx
}
ctx.BeginPath()
ctx.SetFillColor(nanovgo.RGBA(255, 192, 0, 255))
ctx.Rect(caretX, y, 1, lineh)
ctx.Fill()
gutter = lnum + 1
gx = x - 10
gy = y + lineh/2
}
lnum++
y += lineh
}
if gutter > 0 {
txt := strconv.Itoa(gutter)
ctx.SetFontSize(13.0)
ctx.SetTextAlign(nanovgo.AlignRight | nanovgo.AlignMiddle)
_, bounds := ctx.TextBounds(gx, gy, txt)
ctx.BeginPath()
ctx.SetFillColor(nanovgo.RGBA(255, 192, 0, 255))
ctx.RoundedRect(
float32(int(bounds[0]-4)),
float32(int(bounds[1]-2)),
float32(int(bounds[2]-bounds[0])+8),
float32(int(bounds[3]-bounds[1])+4),
float32(int(bounds[3]-bounds[1])+4)/2.0-1.0)
ctx.Fill()
ctx.SetFillColor(nanovgo.RGBA(32, 32, 32, 255))
ctx.Text(gx, gy, txt)
}
y += 20.0
ctx.SetFontSize(13.0)
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignTop)
ctx.SetTextLineHeight(1.2)
//.........這裏部分代碼省略.........
示例10: Draw
func (t *TextBox) Draw(self Widget, ctx *nanovgo.Context) {
t.WidgetImplement.Draw(self, ctx)
x := float32(t.x)
y := float32(t.y)
w := float32(t.w)
h := float32(t.h)
bg := nanovgo.BoxGradient(x+1, y+2, w-2, h-2, 3, 4, nanovgo.MONO(255, 32), nanovgo.MONO(32, 32))
fg1 := nanovgo.BoxGradient(x+1, y+2, w-2, h-2, 3, 4, nanovgo.MONO(150, 32), nanovgo.MONO(32, 32))
fg2 := nanovgo.BoxGradient(x+1, y+2, w-2, h-2, 3, 4, nanovgo.RGBA(255, 0, 0, 100), nanovgo.RGBA(255, 0, 0, 50))
ctx.BeginPath()
ctx.RoundedRect(x+1, y+2, w-2, h-2, 3)
if t.editable && t.Focused() {
if t.validFormat {
ctx.SetFillPaint(fg1)
} else {
ctx.SetFillPaint(fg2)
}
} else {
ctx.SetFillPaint(bg)
}
ctx.Fill()
ctx.BeginPath()
ctx.RoundedRect(x+0.5, y+0.5, w-1, h-1, 2.5)
ctx.SetStrokeColor(nanovgo.MONO(0, 48))
ctx.Stroke()
ctx.SetFontSize(float32(t.FontSize()))
ctx.SetFontFace(t.Font())
drawPosX := x
drawPosY := y + h*0.5 + 1
xSpacing := h * 0.3
var unitWidth float32
if t.unitImage > 0 {
iw, ih, _ := ctx.ImageSize(t.unitImage)
unitHeight := float32(ih) * 0.4
unitWidth = float32(iw) * unitHeight / float32(h)
imgPaint := nanovgo.ImagePattern(x+w-xSpacing-unitWidth, drawPosY-unitHeight*0.5,
unitWidth, unitHeight, 0, t.unitImage, toF(t.enabled, 0.7, 0.35))
ctx.BeginPath()
ctx.Rect(x+w-xSpacing-unitWidth, drawPosY-unitHeight*0.5, unitWidth, unitHeight)
ctx.SetFillPaint(imgPaint)
ctx.Fill()
unitWidth += 2
} else if t.units != "" {
unitWidth, _ = ctx.TextBounds(0, 0, t.units)
ctx.SetFillColor(nanovgo.MONO(255, toB(t.enabled, 64, 32)))
ctx.SetTextAlign(nanovgo.AlignRight | nanovgo.AlignMiddle)
ctx.Text(x+w-xSpacing, drawPosY, t.units)
}
switch t.alignment {
case TextLeft:
ctx.SetTextAlign(nanovgo.AlignLeft | nanovgo.AlignMiddle)
drawPosX += xSpacing
case TextRight:
ctx.SetTextAlign(nanovgo.AlignRight | nanovgo.AlignMiddle)
drawPosX += w - unitWidth - xSpacing
case TextCenter:
ctx.SetTextAlign(nanovgo.AlignCenter | nanovgo.AlignMiddle)
drawPosX += w * 0.5
}
if t.enabled {
ctx.SetFillColor(t.theme.TextColor)
} else {
ctx.SetFillColor(t.theme.DisabledTextColor)
}
// clip visible text area
clipX := x + xSpacing - 1
clipY := y + 1.0
clipWidth := w - unitWidth - 2.0*xSpacing + 2.0
clipHeight := h - 3.0
ctx.Scissor(clipX, clipY, clipWidth, clipHeight)
oldDrawPosX := drawPosX
drawPosX += t.textOffset
if t.committed {
ctx.Text(drawPosX, drawPosY, t.value)
} else {
text := t.editingText()
textString := string(text)
_, bounds := ctx.TextBounds(drawPosX, drawPosY, textString)
lineH := bounds[3] - bounds[1]
// find cursor positions
glyphs := ctx.TextGlyphPositionsRune(drawPosX, drawPosY, text)
t.updateCursor(ctx, bounds[2], glyphs)
// compute text offset
prevCPos := toI(t.cursorPos > 0, t.cursorPos-1, 0)
nextCPos := toI(t.cursorPos < len(glyphs), t.cursorPos+1, len(glyphs))
prevCX := t.textIndex2Position(prevCPos, bounds[2], glyphs)
nextCX := t.textIndex2Position(nextCPos, bounds[2], glyphs)
if nextCX > clipX+clipWidth {
//.........這裏部分代碼省略.........
示例11: Draw
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:
//.........這裏部分代碼省略.........