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faster screenToDocumentPosition, and right clamping for wrapped mode

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This commit is contained in:
nightwing 2011-05-15 23:09:13 +05:00
commit 03a88d3fcf
1 changed files with 23 additions and 16 deletions
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39
lib/ace/edit_session.js
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@ -1389,12 +1389,10 @@ var EditSession = function(text, mode) {
var docRow = 0;
var docColumn = 0;
var column;
var foldLine;
var foldLineRowLength;
var row = 0;
var rowLength = 0;
var splits = null;
var split = 0;
var rowCache = this.$rowCache;
var doCache = !rowCache.length;
@ -1406,6 +1404,11 @@ var EditSession = function(text, mode) {
}
}
var docRowCacheLast = docRow;
// clamp row before clamping column, for selection on last line
var maxRow = this.getLength() - 1;
var foldLine = this.getNextFold(docRow);
var foldStart = foldLine ?foldLine.start.row :Infinity;
while (row <= screenRow) {
if (doCache
@ -1417,28 +1420,32 @@ var EditSession = function(text, mode) {
docRowCacheLast = docRow;
}
rowLength = this.getRowLength(docRow);
if (row + rowLength - 1 >= screenRow) {
if (row + rowLength - 1 >= screenRow || docRow >= maxRow) {
break;
} else {
row += rowLength;
docRow = this.getRowFoldEnd(docRow) + 1;
docRow++;
if(docRow > foldStart) {
docRow = foldLine.end.row+1;
foldLine = this.getNextFold(docRow);
foldStart = foldLine ?foldLine.start.row :Infinity;
}
}
}
// clamp row before clamping column, for selection on last line
var maxRow = this.getLength()-1
if(docRow > maxRow)
docRow = maxRow;
foldLine = this.getFoldLine(docRow);
line = foldLine
? this.getFoldDisplayLine(foldLine)
: this.getLine(docRow);
if (foldLine && foldLine.start.row <= docRow)
line = this.getFoldDisplayLine(foldLine);
else {
line = this.getLine(docRow);
foldLine = null;
}
if (this.$useWrapMode) {
splits = this.$wrapData[docRow] || [];
docColumn = split = splits[screenRow - row - 1] || 0;
line = line.substring(split);
splits = this.$wrapData[docRow];
if (splits && screenRow > row && splits.length) {
docColumn = splits[screenRow - row - 1] || splits[splits.length - 1];
line = line.substring(docColumn);
}
}
docColumn += this.$getStringScreenWidth(line, screenColumn)[1];