move cursor to low/cursorIdx in helper function
This commit is contained in:
@@ -11,6 +11,7 @@ struct
|
|||||||
|
|
||||||
fun finishAfterDeletingBuffer (app: app_type, low, buffer, time, msgs) =
|
fun finishAfterDeletingBuffer (app: app_type, low, buffer, time, msgs) =
|
||||||
let
|
let
|
||||||
|
val buffer = LineGap.goToIdx (low, buffer)
|
||||||
val searchString = #searchString app
|
val searchString = #searchString app
|
||||||
val buffer = LineGap.goToStart buffer
|
val buffer = LineGap.goToStart buffer
|
||||||
val msgs = SEARCH (buffer, searchString, time) :: msgs
|
val msgs = SEARCH (buffer, searchString, time) :: msgs
|
||||||
|
|||||||
492
temp.txt
492
temp.txt
@@ -39,495 +39,3 @@ struct
|
|||||||
val vec =
|
val vec =
|
||||||
#[ left, top, r, g, b
|
#[ left, top, r, g, b
|
||||||
, right, top, r, g, b
|
, right, top, r, g, b
|
||||||
, left, bottom, r, g, b
|
|
||||||
|
|
||||||
, left, bottom, r, g, b
|
|
||||||
, right, bottom, r, g, b
|
|
||||||
, right, top, r, g, b
|
|
||||||
]
|
|
||||||
in
|
|
||||||
[vec]
|
|
||||||
end
|
|
||||||
|
|
||||||
(* builds text from a string with char-wrap.
|
|
||||||
* char-wrap is a similar concept to word-wrap,
|
|
||||||
* but it breaks on character in the middle of a word.
|
|
||||||
*
|
|
||||||
* Will likely want multiple versions of these two mutually recursive
|
|
||||||
* functions for each selection and cursor type:
|
|
||||||
* cursor over an individual character,
|
|
||||||
* range selection where multiple characters are selected, etc.
|
|
||||||
*
|
|
||||||
* Todo:
|
|
||||||
* - Possibly add visual horizontal indentation when char-wrap occurs
|
|
||||||
* on an indented line *)
|
|
||||||
fun buildTextStringAfterCursor
|
|
||||||
( pos, str, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
) =
|
|
||||||
if pos < String.size str then
|
|
||||||
case String.sub (str, pos) of
|
|
||||||
#" " =>
|
|
||||||
(* if space, then proceed forward one char
|
|
||||||
* without adding to acc *)
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
| #"\t" =>
|
|
||||||
(* if tab, proceed forward one char,
|
|
||||||
* and jump visually forwards three chars *)
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace3, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
| #"\n" =>
|
|
||||||
(* if \n, move down vertically, and move to start horizontally
|
|
||||||
* assuming we have not exceeded the window's height.
|
|
||||||
* If we have exceeded the window's height, just return acc. *)
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* return if there is no more vertical space after line break *)
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
| #"\r" =>
|
|
||||||
(* same as \n, except we also check if we are in a \r\n pair,
|
|
||||||
* and proceed two characters forward if so *)
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
if
|
|
||||||
pos < String.size str - 1
|
|
||||||
andalso String.sub (str, pos + 1) = #"\n"
|
|
||||||
then
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 2, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
else
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* return if there is no more vertical space after line break *)
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
| chr =>
|
|
||||||
(* for any other character, add it to acc if there is space,
|
|
||||||
* and proceed forward one character in the string *)
|
|
||||||
let
|
|
||||||
val chrFun = Vector.sub (CozetteAscii.asciiTable, Char.ord chr)
|
|
||||||
in
|
|
||||||
if posX + xSpace < windowWidth then
|
|
||||||
(* if there is horizontal space, place char on the right *)
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
(posX, posY, fontSize, fontSize, fWindowWidth, fWindowHeight, r, g, b)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else if posY + ySpace < windowHeight then
|
|
||||||
(* if there is vertical space, place char down below at startX *)
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
( startX, posY + ySpace, fontSize, fontSize
|
|
||||||
, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b
|
|
||||||
)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, startX + xSpace, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
(* return if no space horizontally or vertically *)
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
(* if we reached the end of the string,
|
|
||||||
* call function to build next string *)
|
|
||||||
continueBuildTextLineGapAfterCursor
|
|
||||||
( tl, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, cursorAcc
|
|
||||||
)
|
|
||||||
|
|
||||||
and continueBuildTextLineGapAfterCursor
|
|
||||||
( strList, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, cursorAcc
|
|
||||||
) =
|
|
||||||
case strList of
|
|
||||||
hd :: tl =>
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( 0, hd, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
| [] => accToDrawMsg (acc, cursorAcc)
|
|
||||||
|
|
||||||
(* same as buildTextStringAfterCursor, except this keeps track of absolute
|
|
||||||
* index and cursor pos too *)
|
|
||||||
fun buildTextStringBeforeCursor
|
|
||||||
( pos, str, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx, cursorPos, hr, hg, hb
|
|
||||||
) =
|
|
||||||
if pos < String.size str then
|
|
||||||
case String.sub (str, pos) of
|
|
||||||
#" " =>
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
| #"\t" =>
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace3, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
| #"\n" =>
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, [])
|
|
||||||
| #"\r" =>
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
if
|
|
||||||
pos < String.size str - 1
|
|
||||||
andalso String.sub (str, pos + 1) = #"\n"
|
|
||||||
then
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 2, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 2, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, [])
|
|
||||||
| chr =>
|
|
||||||
let
|
|
||||||
val chrFun = Vector.sub (CozetteAscii.asciiTable, Char.ord chr)
|
|
||||||
in
|
|
||||||
if posX + xSpace < windowWidth then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
(posX, posY, fontSize, fontSize, fWindowWidth, fWindowHeight, r, g, b)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else if posY + ySpace < windowHeight then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
( startX, posY + ySpace, fontSize, fontSize
|
|
||||||
, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b
|
|
||||||
)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( pos + 1, str, acc, startX + xSpace, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, [])
|
|
||||||
end
|
|
||||||
else
|
|
||||||
continueBuildTextLineGapBeforeCursor
|
|
||||||
( tl, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, absIdx, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
|
|
||||||
and buildTextStringWithinCursor
|
|
||||||
( pos, str, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
) =
|
|
||||||
if pos < String.size str then
|
|
||||||
case String.sub (str, pos) of
|
|
||||||
#" " =>
|
|
||||||
(* if inside cursor, then create cursorAcc;
|
|
||||||
* else, just skip as usual *)
|
|
||||||
if absIdx <> cursorPos then
|
|
||||||
(* not in cursur *)
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* in cursor *)
|
|
||||||
let
|
|
||||||
val cursorAcc = buildCursor (posX, posY, fWindowWidth, fWindowHeight, r, g ,b)
|
|
||||||
in
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
| #"\t" =>
|
|
||||||
(* todo: draw cursor if cursor is on tab
|
|
||||||
* but this is not a priority right now *)
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace3, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
| #"\n" =>
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
if absIdx <> cursorPos then
|
|
||||||
(* not in cursor position, so iterate like normal *)
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* in cursor position, so build cursorAcc
|
|
||||||
* and call AfterCursor function *)
|
|
||||||
if pos = String.size str - 1 andalso tl = [] then
|
|
||||||
(* if we are at end of lineGap, we want to build cursorAcc
|
|
||||||
* at different coordinates than usual *)
|
|
||||||
let
|
|
||||||
val cursorAcc =
|
|
||||||
buildCursor (startX, posY + ySpace, fWindowWidth, fWindowHeight, r, g, b)
|
|
||||||
in
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
let
|
|
||||||
val cursorAcc = buildCursor (posX, posY, fWindowWidth, fWindowHeight, r, g ,b)
|
|
||||||
in
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
| #"\r" =>
|
|
||||||
if posY + ySpace < windowHeight then
|
|
||||||
if
|
|
||||||
pos < String.size str - 1
|
|
||||||
andalso String.sub (str, pos + 1) = #"\n"
|
|
||||||
then
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 2, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 2, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, startX, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
| chr =>
|
|
||||||
let
|
|
||||||
val chrFun = Vector.sub (CozetteAscii.asciiTable, Char.ord chr)
|
|
||||||
in
|
|
||||||
if absIdx <> cursorPos then
|
|
||||||
(* not equal to cursor *)
|
|
||||||
if posX + xSpace < windowWidth then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
(posX, posY, fontSize, fontSize, fWindowWidth, fWindowHeight, r, g, b)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else if posY + ySpace < windowHeight then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
( startX, posY + ySpace, fontSize, fontSize
|
|
||||||
, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b
|
|
||||||
)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( pos + 1, str, acc, startX + xSpace, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx + 1, cursorPos, cursorAcc, hr, hg, hb
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
else
|
|
||||||
(* equal to cursor *)
|
|
||||||
let
|
|
||||||
val cursorAcc = buildCursor (posX, posY, fWindowWidth, fWindowHeight, r, g ,b)
|
|
||||||
in
|
|
||||||
if posX + xSpace < windowWidth then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
( posX, posY, fontSize, fontSize
|
|
||||||
, fWindowWidth, fWindowHeight
|
|
||||||
, hr, hg, hb
|
|
||||||
)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
(* can start building after cursor now,
|
|
||||||
* since cursor was built *)
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, posX + xSpace, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else if posY + ySpace < windowHeight then
|
|
||||||
let
|
|
||||||
val chrVec = chrFun
|
|
||||||
( startX, posY + ySpace, fontSize, fontSize
|
|
||||||
, fWindowWidth, fWindowHeight
|
|
||||||
, hr, hg, hb
|
|
||||||
)
|
|
||||||
val acc = chrVec :: acc
|
|
||||||
in
|
|
||||||
(* can start building after cursor now,
|
|
||||||
* since cursor was built *)
|
|
||||||
buildTextStringAfterCursor
|
|
||||||
( pos + 1, str, acc, startX + xSpace, posY + ySpace, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, cursorAcc
|
|
||||||
)
|
|
||||||
end
|
|
||||||
else
|
|
||||||
accToDrawMsg (acc, cursorAcc)
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|
||||||
else
|
|
||||||
(* we have built cursor now, so can call after-cursor function
|
|
||||||
* to build rest of text *)
|
|
||||||
continueBuildTextLineGapAfterCursor
|
|
||||||
( tl, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, cursorAcc
|
|
||||||
)
|
|
||||||
|
|
||||||
and continueBuildTextLineGapBeforeCursor
|
|
||||||
( strList, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, absIdx, cursorPos, hr, hg, hb
|
|
||||||
) =
|
|
||||||
case strList of
|
|
||||||
hd :: tl =>
|
|
||||||
if cursorPos >= absIdx + cursorPos then
|
|
||||||
(* if end of string is before cursor *)
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( 0, hd, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx, cursorPos, hr, hg, hb
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* if within cursor *)
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( 0, hd, acc, posX, posY, startX
|
|
||||||
, windowWidth, windowHeight, fWindowWidth, fWindowHeight
|
|
||||||
, r, g, b, tl, absIdx, cursorPos, [], hr, hg, hb
|
|
||||||
)
|
|
||||||
| [] => accToDrawMsg (acc, [])
|
|
||||||
|
|
||||||
fun build
|
|
||||||
(startLine, cursorPos, lineGap: LineGap.t, windowWidth, windowHeight) =
|
|
||||||
let
|
|
||||||
val lineGap = LineGap.goToLine (startLine, lineGap)
|
|
||||||
val {rightStrings, rightLines, line = curLine, idx = curIdx, ...} = lineGap
|
|
||||||
in
|
|
||||||
case (rightStrings, rightLines) of
|
|
||||||
(rStrHd :: rStrTl, rLnHd :: _) =>
|
|
||||||
let
|
|
||||||
(* get index of line to start building from *)
|
|
||||||
val startIdx =
|
|
||||||
if startLine > curLine then
|
|
||||||
let
|
|
||||||
val lnPos = startLine - curLine - 1
|
|
||||||
val startIdx = Vector.sub (rLnHd, lnPos)
|
|
||||||
in
|
|
||||||
if
|
|
||||||
String.sub (rStrHd, startIdx) = #"\r"
|
|
||||||
andalso startIdx < String.size rStrHd - 1
|
|
||||||
andalso String.sub (rStrHd, startIdx + 1) = #"\n"
|
|
||||||
then
|
|
||||||
(* handle \r\n pair *)
|
|
||||||
startIdx + 2
|
|
||||||
else startIdx + 1
|
|
||||||
end
|
|
||||||
else
|
|
||||||
0
|
|
||||||
|
|
||||||
val absIdx = curIdx + startIdx
|
|
||||||
|
|
||||||
in
|
|
||||||
if cursorPos < curIdx + String.size rStrHd then
|
|
||||||
(* if cursor is within string *)
|
|
||||||
buildTextStringWithinCursor
|
|
||||||
( startIdx, rStrHd, []
|
|
||||||
, 5, 5, 5
|
|
||||||
, windowWidth, windowHeight
|
|
||||||
, Real32.fromInt windowWidth, Real32.fromInt windowHeight
|
|
||||||
, 0.67, 0.51, 0.83
|
|
||||||
, rStrTl, absIdx, cursorPos, []
|
|
||||||
, 0.211, 0.219, 0.25
|
|
||||||
)
|
|
||||||
else
|
|
||||||
(* if cursor is after string *)
|
|
||||||
buildTextStringBeforeCursor
|
|
||||||
( startIdx, rStrHd, []
|
|
||||||
, 5, 5, 5
|
|
||||||
, windowWidth, windowHeight
|
|
||||||
, Real32.fromInt windowWidth, Real32.fromInt windowHeight
|
|
||||||
, 0.67, 0.51, 0.83
|
|
||||||
, rStrTl, absIdx, cursorPos
|
|
||||||
, 0.211, 0.219, 0.25
|
|
||||||
)
|
|
||||||
end
|
|
||||||
| (_, _) =>
|
|
||||||
(* requested line goes beyond the buffer,
|
|
||||||
* so just return empty list as there is nothig
|
|
||||||
* else we can do. *)
|
|
||||||
[]
|
|
||||||
end
|
|
||||||
end
|
|
||||||
|
|||||||
Reference in New Issue
Block a user