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296 lines
18 KiB
296 lines
18 KiB
package cview
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import "github.com/gdamore/tcell/v2"
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// Semigraphics provides an easy way to access unicode characters for drawing.
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//
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// Named like the unicode characters, 'Semigraphics'-prefix used if unicode block
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// isn't prefixed itself.
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const (
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// Block: General Punctation U+2000-U+206F (http://unicode.org/charts/PDF/U2000.pdf)
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SemigraphicsHorizontalEllipsis rune = '\u2026' // …
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// Block: Box Drawing U+2500-U+257F (http://unicode.org/charts/PDF/U2500.pdf)
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BoxDrawingsLightHorizontal rune = '\u2500' // ─
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BoxDrawingsHeavyHorizontal rune = '\u2501' // ━
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BoxDrawingsLightVertical rune = '\u2502' // │
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BoxDrawingsHeavyVertical rune = '\u2503' // ┃
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BoxDrawingsLightTripleDashHorizontal rune = '\u2504' // ┄
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BoxDrawingsHeavyTripleDashHorizontal rune = '\u2505' // ┅
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BoxDrawingsLightTripleDashVertical rune = '\u2506' // ┆
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BoxDrawingsHeavyTripleDashVertical rune = '\u2507' // ┇
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BoxDrawingsLightQuadrupleDashHorizontal rune = '\u2508' // ┈
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BoxDrawingsHeavyQuadrupleDashHorizontal rune = '\u2509' // ┉
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BoxDrawingsLightQuadrupleDashVertical rune = '\u250a' // ┊
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BoxDrawingsHeavyQuadrupleDashVertical rune = '\u250b' // ┋
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BoxDrawingsLightDownAndRight rune = '\u250c' // ┌
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BoxDrawingsDownLighAndRightHeavy rune = '\u250d' // ┍
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BoxDrawingsDownHeavyAndRightLight rune = '\u250e' // ┎
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BoxDrawingsHeavyDownAndRight rune = '\u250f' // ┏
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BoxDrawingsLightDownAndLeft rune = '\u2510' // ┐
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BoxDrawingsDownLighAndLeftHeavy rune = '\u2511' // ┑
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BoxDrawingsDownHeavyAndLeftLight rune = '\u2512' // ┒
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BoxDrawingsHeavyDownAndLeft rune = '\u2513' // ┓
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BoxDrawingsLightUpAndRight rune = '\u2514' // └
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BoxDrawingsUpLightAndRightHeavy rune = '\u2515' // ┕
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BoxDrawingsUpHeavyAndRightLight rune = '\u2516' // ┖
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BoxDrawingsHeavyUpAndRight rune = '\u2517' // ┗
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BoxDrawingsLightUpAndLeft rune = '\u2518' // ┘
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BoxDrawingsUpLightAndLeftHeavy rune = '\u2519' // ┙
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BoxDrawingsUpHeavyAndLeftLight rune = '\u251a' // ┚
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BoxDrawingsHeavyUpAndLeft rune = '\u251b' // ┛
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BoxDrawingsLightVerticalAndRight rune = '\u251c' // ├
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BoxDrawingsVerticalLightAndRightHeavy rune = '\u251d' // ┝
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BoxDrawingsUpHeavyAndRightDownLight rune = '\u251e' // ┞
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BoxDrawingsDownHeacyAndRightUpLight rune = '\u251f' // ┟
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BoxDrawingsVerticalHeavyAndRightLight rune = '\u2520' // ┠
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BoxDrawingsDownLightAnbdRightUpHeavy rune = '\u2521' // ┡
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BoxDrawingsUpLightAndRightDownHeavy rune = '\u2522' // ┢
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BoxDrawingsHeavyVerticalAndRight rune = '\u2523' // ┣
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BoxDrawingsLightVerticalAndLeft rune = '\u2524' // ┤
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BoxDrawingsVerticalLightAndLeftHeavy rune = '\u2525' // ┥
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BoxDrawingsUpHeavyAndLeftDownLight rune = '\u2526' // ┦
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BoxDrawingsDownHeavyAndLeftUpLight rune = '\u2527' // ┧
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BoxDrawingsVerticalheavyAndLeftLight rune = '\u2528' // ┨
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BoxDrawingsDownLightAndLeftUpHeavy rune = '\u2529' // ┨
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BoxDrawingsUpLightAndLeftDownHeavy rune = '\u252a' // ┪
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BoxDrawingsHeavyVerticalAndLeft rune = '\u252b' // ┫
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BoxDrawingsLightDownAndHorizontal rune = '\u252c' // ┬
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BoxDrawingsLeftHeavyAndRightDownLight rune = '\u252d' // ┭
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BoxDrawingsRightHeavyAndLeftDownLight rune = '\u252e' // ┮
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BoxDrawingsDownLightAndHorizontalHeavy rune = '\u252f' // ┯
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BoxDrawingsDownHeavyAndHorizontalLight rune = '\u2530' // ┰
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BoxDrawingsRightLightAndLeftDownHeavy rune = '\u2531' // ┱
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BoxDrawingsLeftLightAndRightDownHeavy rune = '\u2532' // ┲
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BoxDrawingsHeavyDownAndHorizontal rune = '\u2533' // ┳
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BoxDrawingsLightUpAndHorizontal rune = '\u2534' // ┴
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BoxDrawingsLeftHeavyAndRightUpLight rune = '\u2535' // ┵
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BoxDrawingsRightHeavyAndLeftUpLight rune = '\u2536' // ┶
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BoxDrawingsUpLightAndHorizontalHeavy rune = '\u2537' // ┷
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BoxDrawingsUpHeavyAndHorizontalLight rune = '\u2538' // ┸
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BoxDrawingsRightLightAndLeftUpHeavy rune = '\u2539' // ┹
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BoxDrawingsLeftLightAndRightUpHeavy rune = '\u253a' // ┺
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BoxDrawingsHeavyUpAndHorizontal rune = '\u253b' // ┻
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BoxDrawingsLightVerticalAndHorizontal rune = '\u253c' // ┼
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BoxDrawingsLeftHeavyAndRightVerticalLight rune = '\u253d' // ┽
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BoxDrawingsRightHeavyAndLeftVerticalLight rune = '\u253e' // ┾
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BoxDrawingsVerticalLightAndHorizontalHeavy rune = '\u253f' // ┿
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BoxDrawingsUpHeavyAndDownHorizontalLight rune = '\u2540' // ╀
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BoxDrawingsDownHeavyAndUpHorizontalLight rune = '\u2541' // ╁
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BoxDrawingsVerticalHeavyAndHorizontalLight rune = '\u2542' // ╂
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BoxDrawingsLeftUpHeavyAndRightDownLight rune = '\u2543' // ╃
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BoxDrawingsRightUpHeavyAndLeftDownLight rune = '\u2544' // ╄
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BoxDrawingsLeftDownHeavyAndRightUpLight rune = '\u2545' // ╅
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BoxDrawingsRightDownHeavyAndLeftUpLight rune = '\u2546' // ╆
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BoxDrawingsDownLightAndUpHorizontalHeavy rune = '\u2547' // ╇
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BoxDrawingsUpLightAndDownHorizontalHeavy rune = '\u2548' // ╈
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BoxDrawingsRightLightAndLeftVerticalHeavy rune = '\u2549' // ╉
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BoxDrawingsLeftLightAndRightVerticalHeavy rune = '\u254a' // ╊
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BoxDrawingsHeavyVerticalAndHorizontal rune = '\u254b' // ╋
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BoxDrawingsLightDoubleDashHorizontal rune = '\u254c' // ╌
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BoxDrawingsHeavyDoubleDashHorizontal rune = '\u254d' // ╍
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BoxDrawingsLightDoubleDashVertical rune = '\u254e' // ╎
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BoxDrawingsHeavyDoubleDashVertical rune = '\u254f' // ╏
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BoxDrawingsDoubleHorizontal rune = '\u2550' // ═
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BoxDrawingsDoubleVertical rune = '\u2551' // ║
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BoxDrawingsDownSingleAndRightDouble rune = '\u2552' // ╒
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BoxDrawingsDownDoubleAndRightSingle rune = '\u2553' // ╓
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BoxDrawingsDoubleDownAndRight rune = '\u2554' // ╔
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BoxDrawingsDownSingleAndLeftDouble rune = '\u2555' // ╕
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BoxDrawingsDownDoubleAndLeftSingle rune = '\u2556' // ╖
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BoxDrawingsDoubleDownAndLeft rune = '\u2557' // ╗
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BoxDrawingsUpSingleAndRightDouble rune = '\u2558' // ╘
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BoxDrawingsUpDoubleAndRightSingle rune = '\u2559' // ╙
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BoxDrawingsDoubleUpAndRight rune = '\u255a' // ╚
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BoxDrawingsUpSingleAndLeftDouble rune = '\u255b' // ╛
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BoxDrawingsUpDobuleAndLeftSingle rune = '\u255c' // ╜
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BoxDrawingsDoubleUpAndLeft rune = '\u255d' // ╝
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BoxDrawingsVerticalSingleAndRightDouble rune = '\u255e' // ╞
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BoxDrawingsVerticalDoubleAndRightSingle rune = '\u255f' // ╟
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BoxDrawingsDoubleVerticalAndRight rune = '\u2560' // ╠
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BoxDrawingsVerticalSingleAndLeftDouble rune = '\u2561' // ╡
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BoxDrawingsVerticalDoubleAndLeftSingle rune = '\u2562' // ╢
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BoxDrawingsDoubleVerticalAndLeft rune = '\u2563' // ╣
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BoxDrawingsDownSingleAndHorizontalDouble rune = '\u2564' // ╤
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BoxDrawingsDownDoubleAndHorizontalSingle rune = '\u2565' // ╥
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BoxDrawingsDoubleDownAndHorizontal rune = '\u2566' // ╦
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BoxDrawingsUpSingleAndHorizontalDouble rune = '\u2567' // ╧
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BoxDrawingsUpDoubleAndHorizontalSingle rune = '\u2568' // ╨
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BoxDrawingsDoubleUpAndHorizontal rune = '\u2569' // ╩
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BoxDrawingsVerticalSingleAndHorizontalDouble rune = '\u256a' // ╪
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BoxDrawingsVerticalDoubleAndHorizontalSingle rune = '\u256b' // ╫
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BoxDrawingsDoubleVerticalAndHorizontal rune = '\u256c' // ╬
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BoxDrawingsLightArcDownAndRight rune = '\u256d' // ╭
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BoxDrawingsLightArcDownAndLeft rune = '\u256e' // ╮
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BoxDrawingsLightArcUpAndLeft rune = '\u256f' // ╯
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BoxDrawingsLightArcUpAndRight rune = '\u2570' // ╰
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BoxDrawingsLightDiagonalUpperRightToLowerLeft rune = '\u2571' // ╱
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BoxDrawingsLightDiagonalUpperLeftToLowerRight rune = '\u2572' // ╲
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BoxDrawingsLightDiagonalCross rune = '\u2573' // ╳
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BoxDrawingsLightLeft rune = '\u2574' // ╴
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BoxDrawingsLightUp rune = '\u2575' // ╵
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BoxDrawingsLightRight rune = '\u2576' // ╶
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BoxDrawingsLightDown rune = '\u2577' // ╷
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BoxDrawingsHeavyLeft rune = '\u2578' // ╸
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BoxDrawingsHeavyUp rune = '\u2579' // ╹
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BoxDrawingsHeavyRight rune = '\u257a' // ╺
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BoxDrawingsHeavyDown rune = '\u257b' // ╻
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BoxDrawingsLightLeftAndHeavyRight rune = '\u257c' // ╼
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BoxDrawingsLightUpAndHeavyDown rune = '\u257d' // ╽
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BoxDrawingsHeavyLeftAndLightRight rune = '\u257e' // ╾
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BoxDrawingsHeavyUpAndLightDown rune = '\u257f' // ╿
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)
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// SemigraphicJoints is a map for joining semigraphic (or otherwise) runes.
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// So far only light lines are supported but if you want to change the border
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// styling you need to provide the joints, too.
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// The matching will be sorted ascending by rune value, so you don't need to
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// provide all rune combinations,
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// e.g. (─) + (│) = (┼) will also match (│) + (─) = (┼)
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var SemigraphicJoints = map[string]rune{
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// (─) + (│) = (┼)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightVertical}): BoxDrawingsLightVerticalAndHorizontal,
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// (─) + (┌) = (┬)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightDownAndRight}): BoxDrawingsLightDownAndHorizontal,
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// (─) + (┐) = (┬)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightDownAndLeft}): BoxDrawingsLightDownAndHorizontal,
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// (─) + (└) = (┴)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightUpAndRight}): BoxDrawingsLightUpAndHorizontal,
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// (─) + (┘) = (┴)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightUpAndLeft}): BoxDrawingsLightUpAndHorizontal,
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// (─) + (├) = (┼)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndHorizontal,
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// (─) + (┤) = (┼)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndHorizontal,
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// (─) + (┬) = (┬)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightDownAndHorizontal,
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// (─) + (┴) = (┴)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightUpAndHorizontal,
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// (─) + (┼) = (┼)
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string([]rune{BoxDrawingsLightHorizontal, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (│) + (┌) = (├)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightDownAndRight}): BoxDrawingsLightVerticalAndRight,
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// (│) + (┐) = (┤)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightDownAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (│) + (└) = (├)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightUpAndRight}): BoxDrawingsLightVerticalAndRight,
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// (│) + (┘) = (┤)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightUpAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (│) + (├) = (├)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndRight,
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// (│) + (┤) = (┤)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (│) + (┬) = (┼)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (│) + (┴) = (┼)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (│) + (┼) = (┼)
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string([]rune{BoxDrawingsLightVertical, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┌) + (┐) = (┬)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightDownAndLeft}): BoxDrawingsLightDownAndHorizontal,
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// (┌) + (└) = (├)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightUpAndRight}): BoxDrawingsLightVerticalAndRight,
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// (┌) + (┘) = (┼)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightUpAndLeft}): BoxDrawingsLightVerticalAndHorizontal,
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// (┌) + (├) = (├)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndRight,
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// (┌) + (┤) = (┼)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndHorizontal,
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// (┌) + (┬) = (┬)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightDownAndHorizontal,
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// (┌) + (┴) = (┼)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┌) + (┴) = (┼)
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string([]rune{BoxDrawingsLightDownAndRight, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┐) + (└) = (┼)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightUpAndRight}): BoxDrawingsLightVerticalAndHorizontal,
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// (┐) + (┘) = (┤)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightUpAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (┐) + (├) = (┼)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndHorizontal,
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// (┐) + (┤) = (┤)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (┐) + (┬) = (┬)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightDownAndHorizontal,
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// (┐) + (┴) = (┼)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┐) + (┼) = (┼)
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string([]rune{BoxDrawingsLightDownAndLeft, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (└) + (┘) = (┴)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightUpAndLeft}): BoxDrawingsLightUpAndHorizontal,
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// (└) + (├) = (├)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndRight,
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// (└) + (┤) = (┼)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndHorizontal,
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// (└) + (┬) = (┼)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (└) + (┴) = (┴)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightUpAndHorizontal,
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// (└) + (┼) = (┼)
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string([]rune{BoxDrawingsLightUpAndRight, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┘) + (├) = (┼)
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string([]rune{BoxDrawingsLightUpAndLeft, BoxDrawingsLightVerticalAndRight}): BoxDrawingsLightVerticalAndHorizontal,
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// (┘) + (┤) = (┤)
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string([]rune{BoxDrawingsLightUpAndLeft, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndLeft,
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// (┘) + (┬) = (┼)
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string([]rune{BoxDrawingsLightUpAndLeft, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┘) + (┴) = (┴)
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string([]rune{BoxDrawingsLightUpAndLeft, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightUpAndHorizontal,
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// (┘) + (┼) = (┼)
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string([]rune{BoxDrawingsLightUpAndLeft, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (├) + (┤) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndRight, BoxDrawingsLightVerticalAndLeft}): BoxDrawingsLightVerticalAndHorizontal,
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// (├) + (┬) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndRight, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (├) + (┴) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndRight, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (├) + (┼) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndRight, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┤) + (┬) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndLeft, BoxDrawingsLightDownAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┤) + (┴) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndLeft, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┤) + (┼) = (┼)
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string([]rune{BoxDrawingsLightVerticalAndLeft, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┬) + (┴) = (┼)
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string([]rune{BoxDrawingsLightDownAndHorizontal, BoxDrawingsLightUpAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┬) + (┼) = (┼)
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string([]rune{BoxDrawingsLightDownAndHorizontal, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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// (┴) + (┼) = (┼)
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string([]rune{BoxDrawingsLightUpAndHorizontal, BoxDrawingsLightVerticalAndHorizontal}): BoxDrawingsLightVerticalAndHorizontal,
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}
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// PrintJoinedSemigraphics prints a semigraphics rune into the screen at the given
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// position with the given color, joining it with any existing semigraphics
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// rune. Background colors are preserved. At this point, only regular single
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// line borders are supported.
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func PrintJoinedSemigraphics(screen tcell.Screen, x, y int, ch rune, color tcell.Color) {
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previous, _, style, _ := screen.GetContent(x, y)
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style = style.Foreground(color)
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// What's the resulting rune?
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var result rune
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if ch == previous {
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result = ch
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} else {
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if ch < previous {
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previous, ch = ch, previous
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}
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result = SemigraphicJoints[string([]rune{previous, ch})]
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}
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if result == 0 {
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result = ch
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}
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// We only print something if we have something.
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screen.SetContent(x, y, result, nil, style)
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}
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