def moveDown(editorObj):
"""
Moves down one line
"""
y = editorObj.editorscr.getyx()[0]
if editorObj.currentLine.nextNode is None: # we don't have any more nodes
return
currentLineHeight = editorUtil.lineHeight(editorObj.editorscr,
editorObj.currentLine)
if y + currentLineHeight < editorObj.editorscr.getmaxyx()[0] - 2:
editorObj.currentLine = editorObj.currentLine.nextNode
elif editorObj.currentLine.nextNode is not None:
editorObj.currentLine = editorObj.currentLine.nextNode
amountToMoveDown = editorUtil.lineHeight(editorObj.editorscr,
editorObj.currentLine)
while amountToMoveDown > 0:
amountToMoveDown -= editorUtil.lineHeight(editorObj.editorscr,
editorObj.topLine)
editorObj.topLine = editorObj.topLine.nextNode
editorObj.topLineCount += 1
if editorObj.currentLineIndex > len(editorObj.currentLine.value) - 2:
editorObj.currentLineIndex = len(editorObj.currentLine.value) - 2
if editorObj.currentLineIndex < 0:
editorObj.currentLineIndex = 0
def moveUp(fileNavObj, y):
"""
Move up one step
"""
y -= editorUtil.lineHeight(fileNavObj.filenavscr, fileNavObj.currentDir.lastNode)
# remember you have ' -' at the start of every dir
if y < 0:
temp = fileNavObj.topDir
fileNavObj.topDir = fileNavObj.topDir.lastNode
if fileNavObj.topDir is None:
fileNavObj.topDir = temp
fileNavObj.currentDir = fileNavObj.currentDir.nextNode
y += editorUtil.lineHeight(fileNavObj.filenavscr, fileNavObj.currentDir.lastNode)
if fileNavObj.currentDir is not fileNavObj.dirs.start:
fileNavObj.currentDir = fileNavObj.currentDir.lastNode
return y
def moveDown(fileNavObj, y):
"""
Move down one step
"""
y += editorUtil.lineHeight(fileNavObj.filenavscr, fileNavObj.currentDir)
if fileNavObj.currentDir.nextNode is None:
# if we are at the end
y -= editorUtil.lineHeight(fileNavObj.filenavscr, fileNavObj.currentDir)
if y > fileNavObj.filenavscr.getmaxyx()[0]-2:
y -= editorUtil.lineHeight(fileNavObj.filenavscr, fileNavObj.currentDir)
fileNavObj.topDir = fileNavObj.topDir.nextNode
if fileNavObj.currentDir is not fileNavObj.dirs.end:
fileNavObj.currentDir = fileNavObj.currentDir.nextNode
return y
def drawLineNumbers(editorObj):
"""
Draws the line numbers on editorscr, using the corresponding linenumscr.
Only relevant for use by linenumscr.
"""
# clear old data off the screen
editorObj.linenumscr.clear()
(moveY, moveX) = (0, 0)
# draw line numbers
lineToDraw = editorObj.topLine
y = 0
lineIndex = editorObj.topLineCount
editorObj.linenumscr.move(0, 0)
while y < editorObj.linenumscr.getmaxyx()[0] - 1:
editorObj.linenumscr.addstr(str(lineIndex))
if lineToDraw == editorObj.currentLine:
moveY = y + editorObj.currentLineIndex // editorObj.editorscr.getmaxyx(
)[1]
for i in range(editorObj.currentLineIndex):
c = editorObj.currentLine.value[i]
if c == '\t':
moveX += 8
else:
moveX += 1
if moveX > editorObj.editorscr.getmaxyx()[1]:
moveX -= editorObj.editorscr.getmaxyx()[1]
moveX = moveX % editorObj.editorscr.getmaxyx()[1]
editorObj.currentLineCount = lineIndex
if moveX <= -1:
moveX = 0
y += editorUtil.lineHeight(editorObj.editorscr, lineToDraw)
if lineToDraw.nextNode is None: # ran out of nodes
break
lineToDraw = lineToDraw.nextNode
lineIndex += 1
if y > editorObj.linenumscr.getmaxyx()[0] - 1:
break
editorObj.linenumscr.move(y, 0)
editorObj.editorscr.move(moveY, moveX)
def drawLines(editorObj, scr, topLine):
"""
Takes in a scr object from which it draws on
Draws the line numbers and the lines themselves onto the ui
O(n) where n is the number of blocks that can fit onto the terminal,
but since n is very small and theta(n) is a fraction of
n usually < n/2 this is fine.
"""
# clear the old data off of the screen
scr.clear()
# draw the lines themselves
lineToDraw = topLine
scr.move(0, 0)
cursorY = 0
while lineToDraw is not None:
if scr.getyx()[0] + editorUtil.lineHeight(
editorObj.editorscr, lineToDraw) > scr.getmaxyx()[0] - 1:
# handle no space at bottom when scrolling up
scr.addstr('@')
break
i = 0
for c in lineToDraw.value:
colorToDraw = lineToDraw.colors[i]
scr.addstr(c, curses.color_pair(colorToDraw))
currentX = scr.getyx()[1]
if currentX + 1 > scr.getmaxyx()[1] - 1:
# if we have reached the end of the line horizontally
cursorY += 1
scr.move(cursorY, 0)
i += 1
if scr.getyx()[0] + 1 > scr.getmaxyx()[0] - 1:
break
scr.move(cursorY + 1, 0)
cursorY += 1
lineToDraw = lineToDraw.nextNode
# move cursor to where it should be as
# specified by currentLine and currentLineIndex, refresh and move on
editorObj.linenumscr.refresh()
scr.refresh()
def setColors(editorObj, colorMap):
"""
Sets the colors of the editorObj for every line
in editorObj.lineLinkedList.
Assumes every file is a python file, need to use
different lexers later (possibly check with something
else then pass it in as an argument).
colorMap is a dictionary which maps the kind of syntax
to a certain color.
Use this with editorscr only!
Notice that this won't work perfectly; there will be times that
the syntax highlighting won't be perfect. This is a decided tradeoff;
the popular text editors don't seem to have a solution.
"""
pylex = Python3Lexer(stripnl=False, stripall=False)
# lets build the string to parse
syntax = ''
walk = editorObj.lineLinkedList.start
y = 0
increaseY = False
while walk is not None:
if walk == editorObj.currentLine:
increaseY = True
syntax += walk.value
if increaseY:
y += editorUtil.lineHeight(editorObj.editorscr, walk)
if y > editorObj.editorscr.getmaxyx()[0]:
break
walk = walk.nextNode
walk = editorObj.lineLinkedList.start
i = 0 # index of where i am walking through the string
#kill(editorObj)
#for token in pylex.get_tokens(syntax):
# print(token,end='\r\n')
#assert(False)
for token in pylex.get_tokens(syntax):
if token[1] == '\n':
walk = walk.nextNode
#i = -1
i = 0
if walk is None:
break
continue
tokenType = colorMap[
'TEXT'] # assume everything is text and find contradiction
if pygments.token.Comment.Single is token[0]:
tokenType = colorMap['COMMENT']
if pygments.token.Keyword.Namespace is token[0]:
tokenType = colorMap['NAMESPACE']
if pygments.token.Keyword is token[0]:
tokenType = colorMap['KEYWORD']
if pygments.token.Name.Builtin is token[0]:
tokenType = colorMap['BUILTIN']
if pygments.token.Name.Function is token[0]:
tokenType = colorMap['FUNCTION']
if pygments.token.Literal.Number.Integer is token[
0] or pygments.token.Literal.Number.Float is token[0]:
tokenType = colorMap['LITERAL']
if pygments.token.Operator is token[0]:
tokenType = colorMap['OPERATOR']
if (pygments.token.Literal.String.Single is token[0]
or pygments.token.Literal.String.Double is token[0]):
tokenType = colorMap['STRING_LITERAL']
if pygments.token.Literal.String.Doc is token[0]:
tokenType = colorMap['STRING_LITERAL']
if token[0] is pygments.token.Literal.String.Doc:
for tok in token[1].split('\n'):
for c in tok:
try:
walk.colors[i] = tokenType
except:
a = 1 # do nothing
i += 1
i = 0
walk = walk.nextNode
# if we were at the end break
if walk is None:
break
# set everything back to the way it was before
walk = walk.lastNode
i = -1
continue
for c in token[1]:
try:
walk.colors[i] = tokenType
i += 1
except:
a = 1 # do nothing