create a separate directory for different text builders
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@@ -1,320 +1,7 @@
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structure TextBuilder =
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struct
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structure TC = TextConstants
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type env_data =
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{ charR: Real32.real
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, charG: Real32.real
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, charB: Real32.real
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(* different colours for char when cursor is on char *)
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, cursorOnCharR: Real32.real
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, cursorOnCharG: Real32.real
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, cursorOnCharB: Real32.real
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, cursorR: Real32.real
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, cursorG: Real32.real
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, cursorB: Real32.real
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, highlightR: Real32.real
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, highlightG: Real32.real
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, highlightB: Real32.real
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, charZ: Real32.real
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, cursorZ: Real32.real
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, highlightZ: Real32.real
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, startX: int
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, startY: int
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, scrollColumnStart: int
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, scrollColumnEnd: int
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, lastLineNumber: int
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(* fw/fh = float window width and float window height *)
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, fw: Real32.real
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, fh: Real32.real
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, msgs: MailboxType.t list
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, searchList: int vector
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, searchLen: int
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}
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(* different functions to make vectors of different things we want to draw. *)
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fun makeCursor (posX, posY, env: env_data) =
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Rect.lerp
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( Real32.fromInt (posX - 1)
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, Real32.fromInt posY
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, #cursorZ env
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, TC.scale
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, #fw env
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, #fh env
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, #cursorR env
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, #cursorG env
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, #cursorB env
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)
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fun makeHighlight (posX, posY, env: env_data) =
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Rect.lerp
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( Real32.fromInt (posX - 1)
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, Real32.fromInt posY
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, #highlightZ env
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, TC.scale
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, #fw env
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, #fh env
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, #highlightR env
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, #highlightG env
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, #highlightB env
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)
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fun makeChr (chr, posX, posY, env: env_data) =
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CozetteAscii.make
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( chr
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, Real32.fromInt posX
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, Real32.fromInt posY
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, #charZ env
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, TC.scale
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, #fw env
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, #fh env
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, #charR env
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, #charG env
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, #charB env
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)
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fun makeCursorOnChr (chr, posX, posY, env: env_data) =
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CozetteAscii.make
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( chr
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, Real32.fromInt posX
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, Real32.fromInt posY
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, #charZ env
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, TC.scale
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, #fw env
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, #fh env
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, #cursorOnCharR env
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, #cursorOnCharG env
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, #cursorOnCharB env
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)
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structure TextWithCursor =
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struct
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fun goToFirstLineAfter
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(stl, ltl, posY, lineNumber, absIdx, cursorIdx, env, acc) =
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case (stl, ltl) of
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(shd :: stl, lhd :: ltl) =>
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if Vector.length lhd > 0 then
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let
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val lineOffset = Vector.sub (lhd, 0)
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val strPos = lineOffset + 1
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val absIdx = absIdx + strPos
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val posY = posY + TC.ySpace
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val lineNumber = lineNumber + 1
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in
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build
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( strPos
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, shd
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, stl
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, lhd
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, ltl
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, #startX env
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, posY
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, 0
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, lineNumber
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, absIdx
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, cursorIdx
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, env : env_data
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, acc
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)
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end
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else
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(* keep looping until we find a linebreak *)
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goToFirstLineAfter
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( stl
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, ltl
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, posY
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, lineNumber
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, absIdx + String.size shd
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, cursorIdx
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, env
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, acc
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)
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| (_, _) => acc
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and skipToColumnStart
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(pos, str, stl, line, ltl, posY, lineNumber, absIdx, cursorIdx, env, acc) =
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if Vector.length line = 0 then
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let
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(* get index of buffer after this string *)
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val absIdx = absIdx - pos
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val absIdx = absIdx + String.size str
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in
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goToFirstLineAfter
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(stl, ltl, posY, lineNumber, absIdx, cursorIdx, env, acc)
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end
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else
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(* bin search lines *)
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let
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val searchPos = BinSearch.equalOrMore (pos + 1, #searchList env)
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in
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if searchPos = Vector.length line then
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(* next line is not in this node *)
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let
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val absIdx = absIdx - pos
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val absIdx = absIdx + String.size str
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in
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goToFirstLineAfter
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(stl, ltl, posY, lineNumber, absIdx, cursorIdx, env, acc)
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end
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else
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let
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val lineOffset = Vector.sub (line, searchPos)
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val newStrPos = lineOffset + 1
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val absIdx = absIdx - pos + newStrPos
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val posY = posY + TC.ySpace
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val lineNumber = lineNumber + 1
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in
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build
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( newStrPos
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, str
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, stl
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, line
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, ltl
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, #startX env
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, posY
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, 0
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, lineNumber
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, absIdx
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, cursorIdx
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, env
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, acc
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)
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end
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end
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and build
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( pos
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, str
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, stl
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, line
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, ltl
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, posX
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, posY
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, column
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, lineNumber
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, absIdx
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, cursorIdx
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, env: env_data
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, acc
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) =
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if pos = String.size str then
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case (stl, ltl) of
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(str :: stl, line :: ltl) =>
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build
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( 0
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, str
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, stl
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, line
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, ltl
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, posX
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, posY
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, column
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, lineNumber
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, absIdx
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, cursorIdx
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, env
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, acc
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)
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| (_, _) => acc
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else if column < #scrollColumnStart env then
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skipToColumnStart
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( pos
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, str
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, stl
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, line
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, ltl
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, posY
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, lineNumber
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, absIdx
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, cursorIdx
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, env
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, acc
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)
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else
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case String.sub (str, pos) of
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#" " =>
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let
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val acc =
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if absIdx = cursorIdx then makeCursor (posX, posY, env) :: acc
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else acc
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in
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build
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( pos + 1
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, str
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, stl
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, line
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, ltl
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, posX + TC.xSpace
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, posY
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, column + 1
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, lineNumber
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, absIdx + 1
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, cursorIdx
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, env
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, acc
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)
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end
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| #"\n" =>
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let
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val acc =
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if absIdx = cursorIdx then makeCursor (posX, posY, env) :: acc
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else acc
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val nextLineNumber = lineNumber + 1
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in
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if nextLineNumber > #lastLineNumber env then
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acc
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else
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build
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( pos + 1
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, str
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, stl
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, line
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, ltl
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, #startX env
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, posY + TC.ySpace
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, 0
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, lineNumber + 1
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, absIdx + 1
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, cursorIdx
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, env
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, acc
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)
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end
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| chr =>
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let
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val acc =
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if absIdx = cursorIdx then
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let val acc = makeCursor (posX, posY, env) :: acc
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in makeCursorOnChr (chr, posX, posY, env) :: acc
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end
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else
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makeCursor (posX, posY, env) :: acc
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in
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build
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( pos + 1
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, str
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, stl
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, line
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, ltl
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, posX + TC.xSpace
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, posY
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, column + 1
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, lineNumber
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, absIdx + 1
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, cursorIdx
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, env
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, acc
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)
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end
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end
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structure Utils = TextBuilderUtils
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fun buildTextString
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( pos
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@@ -327,7 +14,7 @@ struct
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, cursorPos
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, cursorAcc
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, bgAcc
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, env: env_data
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, env: Utils.env_data
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) =
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if pos < String.size str then
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case String.sub (str, pos) of
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@@ -615,7 +302,7 @@ struct
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, cursorPos
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, cursorAcc
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, bgAcc
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, env: env_data
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, env: Utils.env_data
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, searchPos
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) =
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if searchPos = Vector.length (#searchList env) then
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