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* proper cursor position RTL text with inline completion

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23150 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Stefan Schimanski 2008-02-23 03:14:33 +00:00
parent f2837e7bcb
commit 919e9a80eb
1 changed files with 49 additions and 10 deletions
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59
src/TextMetrics.cpp
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@ -732,13 +732,12 @@ pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
// check for possible inline completion
DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
pos_type inlineCompletionVPos = -1;
pos_type inlineCompletionLPos = -1;
if (inlineCompletionPos.inTexted()
&& inlineCompletionPos.text() == text_
&& inlineCompletionPos.pit() == pit) {
// draw visually behind the previous character
// FIXME: probably special RTL handling needed here
inlineCompletionVPos = inlineCompletionPos.pos() - 1;
// draw logically behind the previous character
inlineCompletionLPos = inlineCompletionPos.pos() - 1;
}
// Now we iterate through until we reach the right margin
@ -759,7 +758,7 @@ pit_type TextMetrics::rowBreakPoint(int width, pit_type const pit,
int thiswidth = pm.singleWidth(i, *fi);
// add inline completion width
if (inlineCompletionVPos == i) {
if (inlineCompletionLPos == i) {
docstring const & completion = bv_->inlineCompletion();
if (completion.length() > 0)
thiswidth += theFontMetrics(*fi).width(completion);
@ -849,13 +848,12 @@ int TextMetrics::rowWidth(int right_margin, pit_type const pit,
// check for possible inline completion
DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
pos_type inlineCompletionVPos = -1;
pos_type inlineCompletionLPos = -1;
if (inlineCompletionPos.inTexted()
&& inlineCompletionPos.text() == text_
&& inlineCompletionPos.pit() == pit) {
// draw visually behind the previous character
// FIXME: probably special RTL handling needed here
inlineCompletionVPos = inlineCompletionPos.pos() - 1;
// draw logically behind the previous character
inlineCompletionLPos = inlineCompletionPos.pos() - 1;
}
pos_type const body_pos = par.beginOfBody();
@ -875,7 +873,7 @@ int TextMetrics::rowWidth(int right_margin, pit_type const pit,
w += pm.singleWidth(i, *fi);
// add inline completion width
if (inlineCompletionVPos == i) {
if (inlineCompletionLPos == i) {
docstring const & completion = bv_->inlineCompletion();
if (completion.length() > 0)
w += theFontMetrics(*fi).width(completion);
@ -1528,6 +1526,18 @@ int TextMetrics::cursorX(CursorSlice const & sl,
(body_pos > end || !par.isLineSeparator(body_pos - 1)))
body_pos = 0;
// check for possible inline completion in this row
DocIterator const & inlineCompletionPos = bv_->inlineCompletionPos();
pos_type inlineCompletionVPos = -1;
if (inlineCompletionPos.inTexted()
&& inlineCompletionPos.text() == text_
&& inlineCompletionPos.pit() == pit
&& inlineCompletionPos.pos() >= row_pos
&& inlineCompletionPos.pos() <= end) {
// draw logically behind the previous character
inlineCompletionVPos = bidi.log2vis(inlineCompletionPos.pos() - 1);
}
// Use font span to speed things up, see below
FontSpan font_span;
Font font;
@ -1537,6 +1547,15 @@ int TextMetrics::cursorX(CursorSlice const & sl,
if (end > 0 && end < par.size() && par.isSeparator(end - 1))
skipped_sep_vpos = bidi.log2vis(end - 1);
// Inline completion RTL special case row_pos == cursor_pos:
// "__|b" => cursor_pos is right of __
if (row_pos == inlineCompletionVPos && row_pos == cursor_vpos) {
font = getDisplayFont(pit, row_pos + 1);
docstring const & completion = bv_->inlineCompletion();
if (font.isRightToLeft() && completion.length() > 0)
x += theFontMetrics(font.fontInfo()).width(completion);
}
for (pos_type vpos = row_pos; vpos < cursor_vpos; ++vpos) {
// Skip the separator which is at the logical end of the row
if (vpos == skipped_sep_vpos)
@ -1558,6 +1577,26 @@ int TextMetrics::cursorX(CursorSlice const & sl,
x += pm.singleWidth(pos, font);
// Inline completion RTL case:
// "a__|b", __ of b => non-boundary a-pos is right of __
if (vpos + 1 == inlineCompletionVPos
&& (vpos + 1 < cursor_vpos || !boundary_correction)) {
font = getDisplayFont(pit, vpos + 1);
docstring const & completion = bv_->inlineCompletion();
if (font.isRightToLeft() && completion.length() > 0)
x += theFontMetrics(font.fontInfo()).width(completion);
}
// Inline completion LTR case:
// "b|__a", __ of b => non-boundary a-pos is in front of __
if (vpos == inlineCompletionVPos
&& (vpos + 1 < cursor_vpos || boundary_correction)) {
font = getDisplayFont(pit, vpos);
docstring const & completion = bv_->inlineCompletion();
if (!font.isRightToLeft() && completion.length() > 0)
x += theFontMetrics(font.fontInfo()).width(completion);
}
if (par.isSeparator(pos) && pos >= body_pos)
x += row.separator;
}