Smash Border into Block
This commit is contained in:
gizak
parent
7aed750f64
commit
b65224cdc9
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@ -22,3 +22,4 @@ _testmain.go
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*.exe
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*.test
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*.prof
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.DS_Store
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228
block.go
228
block.go
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@ -6,17 +6,116 @@ package termui
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import "image"
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// Copyright 2015 Zack Guo <gizak@icloud.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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// Hline is a horizontal line.
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type Hline struct {
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X int
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Y int
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Len int
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Fg Attribute
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Bg Attribute
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}
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// Vline is a vertical line.
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type Vline struct {
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X int
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Y int
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Len int
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Fg Attribute
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Bg Attribute
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}
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// Buffer draws a horizontal line.
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func (l Hline) Buffer() Buffer {
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if l.Len <= 0 {
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return NewBuffer()
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}
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return NewFilledBuffer(l.X, l.Y, l.X+l.Len, l.Y, HORIZONTAL_LINE, l.Fg, l.Bg)
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}
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// Buffer draws a vertical line.
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func (l Vline) Buffer() Buffer {
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if l.Len <= 0 {
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return NewBuffer()
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}
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return NewFilledBuffer(l.X, l.Y, l.X, l.Y+l.Len, VERTICAL_LINE, l.Fg, l.Bg)
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}
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// Buffer draws a box border.
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func (b Block) drawBorder(buf Buffer) {
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if !b.Border {
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return
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}
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min := b.area.Min
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max := b.area.Max
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x0 := min.X
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y0 := min.Y
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x1 := max.X
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y1 := max.Y
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// draw lines
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if b.BorderTop {
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buf.Merge(Hline{x0, y0, x1 - x0, b.BorderFg, b.BorderBg}.Buffer())
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}
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if b.BorderBottom {
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buf.Merge(Hline{x0, y1, x1 - x0, b.BorderFg, b.BorderBg}.Buffer())
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}
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if b.BorderLeft {
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buf.Merge(Vline{x0, y0, y1 - y0, b.BorderFg, b.BorderBg}.Buffer())
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}
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if b.BorderRight {
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buf.Merge(Vline{x1, y0, y1 - y0, b.BorderFg, b.BorderBg}.Buffer())
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}
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// draw corners
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if b.BorderTop && b.BorderLeft && b.area.Dx() > 0 && b.area.Dy() > 0 {
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buf.Set(x0, y0, Cell{TOP_LEFT, b.BorderFg, b.BorderBg})
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}
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if b.BorderTop && b.BorderRight && b.area.Dx() > 1 && b.area.Dy() > 0 {
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buf.Set(x1, y0, Cell{TOP_RIGHT, b.BorderFg, b.BorderBg})
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}
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if b.BorderBottom && b.BorderLeft && b.area.Dx() > 0 && b.area.Dy() > 1 {
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buf.Set(x0, y1, Cell{BOTTOM_LEFT, b.BorderFg, b.BorderBg})
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}
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if b.BorderBottom && b.BorderRight && b.area.Dx() > 1 && b.area.Dy() > 1 {
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buf.Set(x1, y1, Cell{BOTTOM_RIGHT, b.BorderFg, b.BorderBg})
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}
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}
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func (b Block) drawBorderLabel(buf Buffer) {
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maxTxtW := b.area.Dx() - 2
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tx := DTrimTxCls(TextCells(b.BorderLabel, b.BorderLabelFg, b.BorderLabelBg), maxTxtW)
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for i, w := 0, 0; i < len(tx); i++ {
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buf.Set(b.area.Min.X+1+w, b.area.Min.Y, tx[i])
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w += tx[i].Width()
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}
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}
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// Block is a base struct for all other upper level widgets,
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// consider it as css: display:block.
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// Normally you do not need to create it manually.
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type Block struct {
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Area image.Rectangle
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area image.Rectangle
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innerArea image.Rectangle
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X int
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Y int
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Border LabeledBorder
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IsDisplay bool
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HasBorder bool
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Border bool
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BorderFg Attribute
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BorderBg Attribute
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BorderLeft bool
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BorderRight bool
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BorderTop bool
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BorderBottom bool
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BorderLabel string
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BorderLabelFg Attribute
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BorderLabelBg Attribute
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Display bool
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Bg Attribute
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Width int
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Height int
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@ -28,103 +127,90 @@ type Block struct {
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// NewBlock returns a *Block which inherits styles from current theme.
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func NewBlock() *Block {
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d := Block{}
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d.IsDisplay = true
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d.HasBorder = theme.HasBorder
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d.Border.Left = true
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d.Border.Right = true
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d.Border.Top = true
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d.Border.Bottom = true
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d.Border.Bg = theme.BorderBg
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d.Border.Fg = theme.BorderFg
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d.Border.LabelBgClr = theme.BorderLabelTextBg
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d.Border.LabelFgClr = theme.BorderLabelTextFg
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d.Bg = theme.BlockBg
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d.Width = 2
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d.Height = 2
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return &d
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b := Block{}
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b.Display = true
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b.Border = theme.HasBorder
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b.BorderLeft = true
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b.BorderRight = true
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b.BorderTop = true
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b.BorderBottom = true
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b.BorderBg = theme.BorderBg
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b.BorderFg = theme.BorderFg
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b.BorderLabelBg = theme.BorderLabelTextBg
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b.BorderLabelFg = theme.BorderLabelTextFg
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b.Bg = theme.BlockBg
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b.Width = 2
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b.Height = 2
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return &b
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}
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// Align computes box model
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func (d *Block) Align() {
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d.Area.Min.X = d.X
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d.Area.Min.Y = d.Y
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d.Area.Max.X = d.X + d.Width - 1
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d.Area.Max.Y = d.Y + d.Height - 1
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// Align computes box mob.l
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func (b *Block) Align() {
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b.area.Min.X = b.X
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b.area.Min.Y = b.Y
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b.area.Max.X = b.X + b.Width - 1
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b.area.Max.Y = b.Y + b.Height - 1
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d.innerArea.Min.X = d.X + d.PaddingLeft
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d.innerArea.Min.Y = d.Y + d.PaddingTop
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d.innerArea.Max.X = d.Area.Max.X - d.PaddingRight
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d.innerArea.Max.Y = d.Area.Max.Y - d.PaddingBottom
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b.innerArea.Min.X = b.X + b.PaddingLeft
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b.innerArea.Min.Y = b.Y + b.PaddingTop
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b.innerArea.Max.X = b.area.Max.X - b.PaddingRight
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b.innerArea.Max.Y = b.area.Max.Y - b.PaddingBottom
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d.Border.Area = d.Area
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if d.HasBorder {
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switch {
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case d.Border.Left:
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d.innerArea.Min.X++
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fallthrough
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case d.Border.Right:
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d.innerArea.Max.X--
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fallthrough
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case d.Border.Top:
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d.innerArea.Min.Y++
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fallthrough
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case d.Border.Bottom:
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d.innerArea.Max.Y--
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if b.Border {
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if b.BorderLeft {
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b.innerArea.Min.X++
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}
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if b.BorderRight {
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b.innerArea.Max.X--
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}
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if b.BorderTop {
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b.innerArea.Min.Y++
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}
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if b.BorderBottom {
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b.innerArea.Max.Y--
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}
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}
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}
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// InnerBounds returns the internal bounds of the block after aligning and
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// calculating the padding and border, if any.
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func (d *Block) InnerBounds() image.Rectangle {
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d.Align()
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return d.innerArea
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func (b *Block) InnerBounds() image.Rectangle {
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b.Align()
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return b.innerArea
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}
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// Buffer implements Bufferer interface.
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// Draw background and border (if any).
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func (d *Block) Buffer() Buffer {
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d.Align()
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func (b *Block) Buffer() Buffer {
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b.Align()
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buf := NewBuffer()
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buf.Area = d.Area
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if !d.IsDisplay {
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return buf
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}
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buf.SetArea(b.area)
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buf.Fill(' ', ColorDefault, b.Bg)
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// render border
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if d.HasBorder {
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buf.Union(d.Border.Buffer())
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}
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b.drawBorder(buf)
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b.drawBorderLabel(buf)
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// render background
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for p := range buf.CellMap {
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if p.In(d.innerArea) {
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buf.CellMap[p] = Cell{' ', ColorDefault, d.Bg}
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}
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}
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return buf
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}
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// GetHeight implements GridBufferer.
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// It returns current height of the block.
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func (d Block) GetHeight() int {
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return d.Height
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func (b Block) GetHeight() int {
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return b.Height
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}
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// SetX implements GridBufferer interface, which sets block's x position.
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func (d *Block) SetX(x int) {
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d.X = x
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func (b *Block) SetX(x int) {
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b.X = x
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}
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// SetY implements GridBufferer interface, it sets y position for block.
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func (d *Block) SetY(y int) {
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d.Y = y
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func (b *Block) SetY(y int) {
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b.Y = y
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}
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// SetWidth implements GridBuffer interface, it sets block's width.
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func (d *Block) SetWidth(w int) {
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d.Width = w
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func (b *Block) SetWidth(w int) {
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b.Width = w
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}
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123
box.go
123
box.go
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@ -1,123 +0,0 @@
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// Copyright 2015 Zack Guo <gizak@icloud.com>. All rights reserved.
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// Use of this source code is governed by a MIT license that can
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// be found in the LICENSE file.
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package termui
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import "image"
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type Border struct {
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Area image.Rectangle
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Left bool
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Top bool
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Right bool
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Bottom bool
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Fg Attribute
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Bg Attribute
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}
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type Hline struct {
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X int
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Y int
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Len int
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Fg Attribute
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Bg Attribute
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}
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type Vline struct {
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X int
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Y int
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Len int
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Fg Attribute
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Bg Attribute
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}
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// Buffer draws a horizontal line.
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func (l Hline) Buffer() Buffer {
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buf := NewBuffer()
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for i := 0; i < l.Len; i++ {
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buf.Set(l.X+i, l.Y, Cell{HORIZONTAL_LINE, l.Fg, l.Bg})
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}
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buf.Align()
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return buf
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}
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// Buffer draws a vertical line.
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func (l Vline) Buffer() Buffer {
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buf := NewBuffer()
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for i := 0; i < l.Len; i++ {
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buf.Set(l.X, l.Y+i, Cell{VERTICAL_LINE, l.Fg, l.Bg})
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}
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buf.Align()
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return buf
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}
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// Buffer draws a box border.
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func (b Border) Buffer() Buffer {
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buf := NewBuffer()
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if b.Area.Size().X < 2 || b.Area.Size().Y < 2 {
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return buf
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}
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min := b.Area.Min
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max := b.Area.Max
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x0 := min.X
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y0 := min.Y
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x1 := max.X
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y1 := max.Y
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// draw lines
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switch {
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case b.Top:
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buf.Union(Hline{x0, y0, x1 - x0, b.Fg, b.Bg}.Buffer())
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fallthrough
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case b.Bottom:
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buf.Union(Hline{x0, y1, x1 - x0, b.Fg, b.Bg}.Buffer())
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fallthrough
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case b.Left:
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buf.Union(Vline{x0, y0, y1 - y0, b.Fg, b.Bg}.Buffer())
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fallthrough
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case b.Right:
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buf.Union(Vline{x1, y0, y1 - y0, b.Fg, b.Bg}.Buffer())
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}
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// draw corners
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switch {
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case b.Top && b.Left:
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buf.Set(x0, y0, Cell{TOP_LEFT, b.Fg, b.Bg})
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fallthrough
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case b.Top && b.Right:
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buf.Set(x1, y0, Cell{TOP_RIGHT, b.Fg, b.Bg})
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fallthrough
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case b.Bottom && b.Left:
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buf.Set(x0, y1, Cell{BOTTOM_LEFT, b.Fg, b.Bg})
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fallthrough
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case b.Bottom && b.Right:
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buf.Set(x1, y1, Cell{BOTTOM_RIGHT, b.Fg, b.Bg})
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}
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return buf
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}
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// LabeledBorder defined label upon Border
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type LabeledBorder struct {
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Border
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Label string
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LabelFgClr Attribute
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LabelBgClr Attribute
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}
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// Buffer draw a box border with label.
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func (lb LabeledBorder) Buffer() Buffer {
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border := lb.Border.Buffer()
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maxTxtW := lb.Area.Dx() + 1 - 2
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tx := DTrimTxCls(TextCells(lb.Label, lb.LabelFgClr, lb.LabelBgClr), maxTxtW)
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for i, w := 0, 0; i < len(tx); i++ {
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border.Set(border.Area.Min.X+1+w, border.Area.Min.Y, tx[i])
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w += tx[i].Width()
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}
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return border
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}
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74
buffer.go
74
buffer.go
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@ -15,7 +15,7 @@ type Cell struct {
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// Buffer is a renderable rectangle cell data container.
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type Buffer struct {
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Area image.Rectangle // selected drawing area
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Area *image.Rectangle // selected drawing area
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CellMap map[image.Point]Cell
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}
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@ -33,23 +33,31 @@ func (b Buffer) Set(x, y int, c Cell) {
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func (b Buffer) Bounds() image.Rectangle {
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x0, y0, x1, y1 := 0, 0, 0, 0
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for p := range b.CellMap {
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switch {
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case p.X > x1:
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if p.X > x1 {
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x1 = p.X
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case p.X < x0:
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}
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if p.X < x0 {
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x0 = p.X
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case p.Y > y1:
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}
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if p.Y > y1 {
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y1 = p.Y
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case p.Y < y0:
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}
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if p.Y < y0 {
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y0 = p.Y
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}
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}
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return image.Rect(x0, y0, x1, y1)
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}
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// Align sets drawing area to the buffer's bound
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func (b *Buffer) Align() {
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b.Area = b.Bounds()
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// SetArea assigns a new rect area to Buffer b.
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func (b Buffer) SetArea(r image.Rectangle) {
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b.Area.Max = r.Max
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b.Area.Min = r.Min
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}
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// Sync sets drawing area to the buffer's bound
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func (b Buffer) Sync() {
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b.SetArea(b.Bounds())
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}
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// NewCell returns a new cell
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@ -57,23 +65,16 @@ func NewCell(ch rune, fg, bg Attribute) Cell {
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return Cell{ch, fg, bg}
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}
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// Union squeezes buf into b
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func (b Buffer) Union(buf Buffer) {
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for p, c := range buf.CellMap {
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b.Set(p.X, p.Y, c)
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// Merge merges bs Buffers onto b
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func (b Buffer) Merge(bs ...Buffer) {
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for _, buf := range bs {
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for p, v := range buf.CellMap {
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b.Set(p.X, p.Y, v)
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}
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b.SetArea(b.Area.Union(*buf.Area))
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}
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}
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// Union returns a new Buffer formed by squeezing bufs into one Buffer
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func Union(bufs ...Buffer) Buffer {
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buf := NewBuffer()
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for _, b := range bufs {
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buf.Union(b)
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}
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buf.Align()
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return buf
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}
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// Point for adapting use, will be removed after resolving bridging.
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type Point struct {
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X int
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@ -85,5 +86,30 @@ type Point struct {
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// NewBuffer returns a new Buffer
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func NewBuffer() Buffer {
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return Buffer{CellMap: make(map[image.Point]Cell)}
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return Buffer{
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CellMap: make(map[image.Point]Cell),
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Area: &image.Rectangle{}}
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}
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// Fill fills the Buffer b with ch,fg and bg.
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||||
func (b Buffer) Fill(ch rune, fg, bg Attribute) {
|
||||
for x := b.Area.Min.X; x < b.Area.Max.X; x++ {
|
||||
for y := b.Area.Min.Y; y < b.Area.Max.Y; y++ {
|
||||
b.Set(x, y, Cell{ch, fg, bg})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// NewFilledBuffer returns a new Buffer filled with ch, fb and bg.
|
||||
func NewFilledBuffer(x0, y0, x1, y1 int, ch rune, fg, bg Attribute) Buffer {
|
||||
buf := NewBuffer()
|
||||
buf.Area.Min = image.Pt(x0, y0)
|
||||
buf.Area.Max = image.Pt(x1, y1)
|
||||
|
||||
for x := buf.Area.Min.X; x < buf.Area.Max.X; x++ {
|
||||
for y := buf.Area.Min.Y; y < buf.Area.Max.Y; y++ {
|
||||
buf.Set(x, y, Cell{ch, fg, bg})
|
||||
}
|
||||
}
|
||||
return buf
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue