-
Yuri Chebotarev authored
reviewed by Richard Nelson at https://codereview.productengine.com/secondlife/r/596/ --HG-- branch : product-engine
Yuri Chebotarev authoredreviewed by Richard Nelson at https://codereview.productengine.com/secondlife/r/596/ --HG-- branch : product-engine
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lltextbase.cpp 77.40 KiB
/**
* @file lltextbase.cpp
* @author Martin Reddy
* @brief The base class of text box/editor, providing Url handling support
*
* $LicenseInfo:firstyear=2009&license=viewergpl$
*
* Copyright (c) 2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "lltextbase.h"
#include "lllocalcliprect.h"
#include "llmenugl.h"
#include "llscrollcontainer.h"
#include "llstl.h"
#include "lltextparser.h"
#include "lltooltip.h"
#include "lluictrl.h"
#include "llurlaction.h"
#include "llurlregistry.h"
#include "llview.h"
#include "llwindow.h"
#include <boost/bind.hpp>
const F32 CURSOR_FLASH_DELAY = 1.0f; // in seconds
const S32 CURSOR_THICKNESS = 2;
LLTextBase::line_info::line_info(S32 index_start, S32 index_end, LLRect rect, S32 line_num)
: mDocIndexStart(index_start),
mDocIndexEnd(index_end),
mRect(rect),
mLineNum(line_num)
{}
bool LLTextBase::compare_segment_end::operator()(const LLTextSegmentPtr& a, const LLTextSegmentPtr& b) const
{
// sort empty spans (e.g. 11-11) after previous non-empty spans (e.g. 5-11)
if (a->getEnd() == b->getEnd())
{
return a->getStart() < b->getStart();
}
return a->getEnd() < b->getEnd();
}
// helper functors
struct LLTextBase::compare_bottom
{
bool operator()(const S32& a, const LLTextBase::line_info& b) const
{
return a > b.mRect.mBottom; // bottom of a is higher than bottom of b
}
bool operator()(const LLTextBase::line_info& a, const S32& b) const
{
return a.mRect.mBottom > b; // bottom of a is higher than bottom of b
}
bool operator()(const LLTextBase::line_info& a, const LLTextBase::line_info& b) const
{
return a.mRect.mBottom > b.mRect.mBottom; // bottom of a is higher than bottom of b
}
};
// helper functors
struct LLTextBase::compare_top
{
bool operator()(const S32& a, const LLTextBase::line_info& b) const
{
return a > b.mRect.mTop; // top of a is higher than top of b
}
bool operator()(const LLTextBase::line_info& a, const S32& b) const
{
return a.mRect.mTop > b; // top of a is higher than top of b
}
bool operator()(const LLTextBase::line_info& a, const LLTextBase::line_info& b) const
{
return a.mRect.mTop > b.mRect.mTop; // top of a is higher than top of b
}
};
struct LLTextBase::line_end_compare
{
bool operator()(const S32& pos, const LLTextBase::line_info& info) const
{
return (pos < info.mDocIndexEnd);
}
bool operator()(const LLTextBase::line_info& info, const S32& pos) const
{
return (info.mDocIndexEnd < pos);
}
bool operator()(const LLTextBase::line_info& a, const LLTextBase::line_info& b) const
{
return (a.mDocIndexEnd < b.mDocIndexEnd);
}
};
//////////////////////////////////////////////////////////////////////////
//
// LLTextBase
//
// register LLTextBase::Params under name "textbase"
static LLWidgetNameRegistry::StaticRegistrar sRegisterTextBaseParams(&typeid(LLTextBase::Params), "textbase");
LLTextBase::LineSpacingParams::LineSpacingParams()
: multiple("multiple", 1.f),
pixels("pixels", 0)
{
}
LLTextBase::Params::Params()
: cursor_color("cursor_color"),
text_color("text_color"),
text_readonly_color("text_readonly_color"),
bg_visible("bg_visible", false),
border_visible("border_visible", false),
bg_readonly_color("bg_readonly_color"),
bg_writeable_color("bg_writeable_color"),
bg_focus_color("bg_focus_color"),
allow_scroll("allow_scroll", true),
plain_text("plain_text",false),
track_end("track_end", false),
read_only("read_only", false),
v_pad("v_pad", 0),
h_pad("h_pad", 0),
clip_partial("clip_partial", true),
line_spacing("line_spacing"),
max_text_length("max_length", 255),
font_shadow("font_shadow"),
wrap("wrap"),
use_ellipses("use_ellipses", false),
allow_html("allow_html", false),
parse_highlights("parse_highlights", false)
{
addSynonym(track_end, "track_bottom");
addSynonym(wrap, "word_wrap");
}
LLTextBase::LLTextBase(const LLTextBase::Params &p)
: LLUICtrl(p, LLTextViewModelPtr(new LLTextViewModel)),
mURLClickSignal(),
mMaxTextByteLength( p.max_text_length ),
mDefaultFont(p.font),
mFontShadow(p.font_shadow),
mPopupMenu(NULL),
mReadOnly(p.read_only),
mCursorColor(p.cursor_color),
mFgColor(p.text_color),
mBorderVisible( p.border_visible ),
mReadOnlyFgColor(p.text_readonly_color),
mWriteableBgColor(p.bg_writeable_color),
mReadOnlyBgColor(p.bg_readonly_color),
mFocusBgColor(p.bg_focus_color),
mReflowIndex(S32_MAX),
mCursorPos( 0 ),
mScrollNeeded(FALSE),
mDesiredXPixel(-1),
mHPad(p.h_pad),
mVPad(p.v_pad),
mHAlign(p.font_halign),
mLineSpacingMult(p.line_spacing.multiple),
mLineSpacingPixels(p.line_spacing.pixels),
mClipPartial(p.clip_partial && !p.allow_scroll),
mTrackEnd( p.track_end ),
mScrollIndex(-1),
mSelectionStart( 0 ),
mSelectionEnd( 0 ),
mIsSelecting( FALSE ),
mPlainText ( p.plain_text ),
mWordWrap(p.wrap),
mUseEllipses( p.use_ellipses ),
mParseHTML(p.allow_html),
mParseHighlights(p.parse_highlights),
mBGVisible(p.bg_visible),
mScroller(NULL)
{
if(p.allow_scroll)
{
LLScrollContainer::Params scroll_params;
scroll_params.name = "text scroller";
scroll_params.rect = getLocalRect();
scroll_params.follows.flags = FOLLOWS_ALL;
scroll_params.is_opaque = false;
scroll_params.mouse_opaque = false;
scroll_params.min_auto_scroll_rate = 200;
scroll_params.max_auto_scroll_rate = 800;
scroll_params.border_visible = p.border_visible;
mScroller = LLUICtrlFactory::create<LLScrollContainer>(scroll_params);
addChild(mScroller);
}
LLView::Params view_params;
view_params.name = "text_contents";
view_params.rect = LLRect(0, 500, 500, 0);
view_params.mouse_opaque = false;
mDocumentView = LLUICtrlFactory::create<LLView>(view_params);
if (mScroller)
{
mScroller->addChild(mDocumentView);
}
else
{
addChild(mDocumentView);
}
createDefaultSegment();
updateRects();
}
LLTextBase::~LLTextBase()
{
// Menu, like any other LLUICtrl, is deleted by its parent - gMenuHolder
mSegments.clear();
}
void LLTextBase::initFromParams(const LLTextBase::Params& p)
{
LLUICtrl::initFromParams(p);
resetDirty(); // Update saved text state
updateSegments();
// HACK: work around enabled == readonly design bug -- RN
// setEnabled will modify our read only status, so do this after
// LLTextBase::initFromParams
if (p.read_only.isProvided())
{
mReadOnly = p.read_only;
}
// HACK: text editors always need to be enabled so that we can scroll
LLView::setEnabled(true);
}
bool LLTextBase::truncate()
{
BOOL did_truncate = FALSE;
// First rough check - if we're less than 1/4th the size, we're OK
if (getLength() >= S32(mMaxTextByteLength / 4))
{
// Have to check actual byte size
LLWString text(getWText());
S32 utf8_byte_size = wstring_utf8_length(text);
if ( utf8_byte_size > mMaxTextByteLength )
{
// Truncate safely in UTF-8
std::string temp_utf8_text = wstring_to_utf8str(text);
temp_utf8_text = utf8str_truncate( temp_utf8_text, mMaxTextByteLength );
LLWString text = utf8str_to_wstring( temp_utf8_text );
// remove extra bit of current string, to preserve formatting, etc.
removeStringNoUndo(text.size(), getWText().size() - text.size());
did_truncate = TRUE;
}
}
return did_truncate;
}
LLStyle::Params LLTextBase::getDefaultStyleParams()
{
return LLStyle::Params()
.color(LLUIColor(&mFgColor))
.readonly_color(LLUIColor(&mReadOnlyFgColor))
.font(mDefaultFont)
.drop_shadow(mFontShadow);
}
void LLTextBase::onValueChange(S32 start, S32 end)
{
}
// Draws the black box behind the selected text
void LLTextBase::drawSelectionBackground()
{
// Draw selection even if we don't have keyboard focus for search/replace
if( hasSelection() && !mLineInfoList.empty())
{
std::vector<LLRect> selection_rects;
S32 selection_left = llmin( mSelectionStart, mSelectionEnd );
S32 selection_right = llmax( mSelectionStart, mSelectionEnd );
LLRect selection_rect = mVisibleTextRect;
// Skip through the lines we aren't drawing.
LLRect content_display_rect = getVisibleDocumentRect();
// binary search for line that starts before top of visible buffer
line_list_t::const_iterator line_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), content_display_rect.mTop, compare_bottom());
line_list_t::const_iterator end_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), content_display_rect.mBottom, compare_top());
bool done = false;
// Find the coordinates of the selected area
for (;line_iter != end_iter && !done; ++line_iter)
{
// is selection visible on this line?
if (line_iter->mDocIndexEnd > selection_left && line_iter->mDocIndexStart < selection_right)
{
segment_set_t::iterator segment_iter;
S32 segment_offset;
getSegmentAndOffset(line_iter->mDocIndexStart, &segment_iter, &segment_offset);
LLRect selection_rect;
selection_rect.mLeft = line_iter->mRect.mLeft;
selection_rect.mRight = line_iter->mRect.mLeft;
selection_rect.mBottom = line_iter->mRect.mBottom;
selection_rect.mTop = line_iter->mRect.mTop;
for(;segment_iter != mSegments.end(); ++segment_iter, segment_offset = 0)
{
LLTextSegmentPtr segmentp = *segment_iter;
S32 segment_line_start = segmentp->getStart() + segment_offset;
S32 segment_line_end = llmin(segmentp->getEnd(), line_iter->mDocIndexEnd);
if (segment_line_start > segment_line_end) break;
S32 segment_width = 0;
S32 segment_height = 0;
// if selection after beginning of segment
if(selection_left >= segment_line_start)
{
S32 num_chars = llmin(selection_left, segment_line_end) - segment_line_start;
segmentp->getDimensions(segment_offset, num_chars, segment_width, segment_height);
selection_rect.mLeft += segment_width;
}
// if selection_right == segment_line_end then that means we are the first character of the next segment
// or first character of the next line, in either case we want to add the length of the current segment
// to the selection rectangle and continue.
// if selection right > segment_line_end then selection spans end of current segment...
if (selection_right >= segment_line_end)
{
// extend selection slightly beyond end of line
// to indicate selection of newline character (use "n" character to determine width)
S32 num_chars = segment_line_end - segment_line_start;
segmentp->getDimensions(segment_offset, num_chars, segment_width, segment_height);
selection_rect.mRight += segment_width;
}
// else if selection ends on current segment...
else
{
S32 num_chars = selection_right - segment_line_start;
segmentp->getDimensions(segment_offset, num_chars, segment_width, segment_height);
selection_rect.mRight += segment_width;
break;
}
}
selection_rects.push_back(selection_rect);
}
}
// Draw the selection box (we're using a box instead of reversing the colors on the selected text).
gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
const LLColor4& color = mReadOnly ? mReadOnlyFgColor.get() : mFgColor.get();
F32 alpha = hasFocus() ? 0.7f : 0.3f;
alpha *= getDrawContext().mAlpha;
LLColor4 selection_color(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], alpha);
for (std::vector<LLRect>::iterator rect_it = selection_rects.begin();
rect_it != selection_rects.end();
++rect_it)
{
LLRect selection_rect = *rect_it;
selection_rect.translate(mVisibleTextRect.mLeft - content_display_rect.mLeft, mVisibleTextRect.mBottom - content_display_rect.mBottom);
gl_rect_2d(selection_rect, selection_color);
}
}
}
void LLTextBase::drawCursor()
{
F32 alpha = getDrawContext().mAlpha;
if( hasFocus()
&& gFocusMgr.getAppHasFocus()
&& !mReadOnly)
{
const LLWString &wtext = getWText();
const llwchar* text = wtext.c_str();
LLRect cursor_rect = getLocalRectFromDocIndex(mCursorPos);
cursor_rect.translate(-1, 0);
segment_set_t::iterator seg_it = getSegIterContaining(mCursorPos);
// take style from last segment
LLTextSegmentPtr segmentp;
if (seg_it != mSegments.end())
{
segmentp = *seg_it;
}
else
{
//segmentp = mSegments.back();
return;
}
// Draw the cursor
// (Flash the cursor every half second starting a fixed time after the last keystroke)
F32 elapsed = mCursorBlinkTimer.getElapsedTimeF32();
if( (elapsed < CURSOR_FLASH_DELAY ) || (S32(elapsed * 2) & 1) )
{
if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode() && !hasSelection())
{
S32 segment_width = 0;
S32 segment_height = 0;
segmentp->getDimensions(mCursorPos - segmentp->getStart(), 1, segment_width, segment_height);
S32 width = llmax(CURSOR_THICKNESS, segment_width);
cursor_rect.mRight = cursor_rect.mLeft + width;
}
else
{
cursor_rect.mRight = cursor_rect.mLeft + CURSOR_THICKNESS;
}
gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
LLColor4 cursor_color = mCursorColor.get() % alpha;
gGL.color4fv( cursor_color.mV );
gl_rect_2d(cursor_rect);
if (LL_KIM_OVERWRITE == gKeyboard->getInsertMode() && !hasSelection() && text[mCursorPos] != '\n')
{
LLColor4 text_color;
const LLFontGL* fontp;
if (segmentp)
{
text_color = segmentp->getColor();
fontp = segmentp->getStyle()->getFont();
}
else if (mReadOnly)
{
text_color = mReadOnlyFgColor.get();
fontp = mDefaultFont;
}
else
{
text_color = mFgColor.get();
fontp = mDefaultFont;
}
fontp->render(text, mCursorPos, cursor_rect.mLeft, cursor_rect.mTop,
LLColor4(1.f - text_color.mV[VRED], 1.f - text_color.mV[VGREEN], 1.f - text_color.mV[VBLUE], alpha),
LLFontGL::LEFT, LLFontGL::TOP,
LLFontGL::NORMAL,
LLFontGL::NO_SHADOW,
1);
}
// Make sure the IME is in the right place
LLRect screen_pos = calcScreenRect();
LLCoordGL ime_pos( screen_pos.mLeft + llfloor(cursor_rect.mLeft), screen_pos.mBottom + llfloor(cursor_rect.mTop) );
ime_pos.mX = (S32) (ime_pos.mX * LLUI::sGLScaleFactor.mV[VX]);
ime_pos.mY = (S32) (ime_pos.mY * LLUI::sGLScaleFactor.mV[VY]);
getWindow()->setLanguageTextInput( ime_pos );
}
}
}
void LLTextBase::drawText()
{
const S32 text_len = getLength();
if( text_len <= 0 )
{
return;
}
S32 selection_left = -1;
S32 selection_right = -1;
// Draw selection even if we don't have keyboard focus for search/replace
if( hasSelection())
{
selection_left = llmin( mSelectionStart, mSelectionEnd );
selection_right = llmax( mSelectionStart, mSelectionEnd );
}
LLRect scrolled_view_rect = getVisibleDocumentRect();
std::pair<S32, S32> line_range = getVisibleLines(mClipPartial);
S32 first_line = line_range.first;
S32 last_line = line_range.second;
if (first_line >= last_line)
{
return;
}
S32 line_start = getLineStart(first_line);
// find first text segment that spans top of visible portion of text buffer
segment_set_t::iterator seg_iter = getSegIterContaining(line_start);
if (seg_iter == mSegments.end())
{
return;
}
LLTextSegmentPtr cur_segment = *seg_iter;
for (S32 cur_line = first_line; cur_line < last_line; cur_line++)
{
S32 next_line = cur_line + 1;
line_info& line = mLineInfoList[cur_line];
S32 next_start = -1;
S32 line_end = text_len;
if (next_line < getLineCount())
{
next_start = getLineStart(next_line);
line_end = next_start;
}
LLRect text_rect(line.mRect.mLeft + mVisibleTextRect.mLeft - scrolled_view_rect.mLeft,
line.mRect.mTop - scrolled_view_rect.mBottom + mVisibleTextRect.mBottom,
llmin(mDocumentView->getRect().getWidth(), line.mRect.mRight) - scrolled_view_rect.mLeft,
line.mRect.mBottom - scrolled_view_rect.mBottom + mVisibleTextRect.mBottom);
// draw a single line of text
S32 seg_start = line_start;
while( seg_start < line_end )
{
while( cur_segment->getEnd() <= seg_start )
{
seg_iter++;
if (seg_iter == mSegments.end())
{
llwarns << "Ran off the segmentation end!" << llendl;
return;
}
cur_segment = *seg_iter;
}
S32 clipped_end = llmin( line_end, cur_segment->getEnd() ) - cur_segment->getStart();
if (mUseEllipses // using ellipses
&& clipped_end == line_end // last segment on line
&& next_line == last_line // this is the last visible line
&& last_line < (S32)mLineInfoList.size()) // and there is more text to display
{
// more lines of text to go, but we can't fit them
// so shrink text rect to force ellipses
text_rect.mRight -= 2;
}
text_rect.mLeft = (S32)(cur_segment->draw(seg_start - cur_segment->getStart(), clipped_end, selection_left, selection_right, text_rect));
seg_start = clipped_end + cur_segment->getStart();
}
line_start = next_start;
}
}
///////////////////////////////////////////////////////////////////
// Returns change in number of characters in mWText
S32 LLTextBase::insertStringNoUndo(S32 pos, const LLWString &wstr, LLTextBase::segment_vec_t* segments )
{
LLWString text(getWText());
S32 old_len = text.length(); // length() returns character length
S32 insert_len = wstr.length();
pos = getEditableIndex(pos, true);
segment_set_t::iterator seg_iter = getSegIterContaining(pos);
LLTextSegmentPtr default_segment;
LLTextSegmentPtr segmentp;
if (seg_iter != mSegments.end())
{
segmentp = *seg_iter;
}
else
{
//segmentp = mSegments.back();
return pos;
}
if (segmentp->canEdit())
{
segmentp->setEnd(segmentp->getEnd() + insert_len);
if (seg_iter != mSegments.end())
{
++seg_iter;
}
}
else
{
// create default editable segment to hold new text
LLStyleConstSP sp(new LLStyle(getDefaultStyleParams()));
default_segment = new LLNormalTextSegment( sp, pos, pos + insert_len, *this);
}
// shift remaining segments to right
for(;seg_iter != mSegments.end(); ++seg_iter)
{
LLTextSegmentPtr segmentp = *seg_iter;
segmentp->setStart(segmentp->getStart() + insert_len);
segmentp->setEnd(segmentp->getEnd() + insert_len);
}
// insert new segments
if (segments)
{
if (default_segment.notNull())
{
// potentially overwritten by segments passed in
insertSegment(default_segment);
}
for (segment_vec_t::iterator seg_iter = segments->begin();
seg_iter != segments->end();
++seg_iter)
{
LLTextSegment* segmentp = *seg_iter;
insertSegment(segmentp);
}
}
text.insert(pos, wstr);
getViewModel()->setDisplay(text);
if ( truncate() )
{
insert_len = getLength() - old_len;
}
onValueChange(pos, pos + insert_len);
needsReflow(pos);
return insert_len;
}
S32 LLTextBase::removeStringNoUndo(S32 pos, S32 length)
{
LLWString text(getWText());
segment_set_t::iterator seg_iter = getSegIterContaining(pos);
while(seg_iter != mSegments.end())
{
LLTextSegmentPtr segmentp = *seg_iter;
S32 end = pos + length;
if (segmentp->getStart() < pos)
{
// deleting from middle of segment
if (segmentp->getEnd() > end)
{
segmentp->setEnd(segmentp->getEnd() - length);
}
// truncating segment
else
{
segmentp->setEnd(pos);
}
}
else if (segmentp->getStart() < end)
{
// deleting entire segment
if (segmentp->getEnd() <= end)
{
// remove segment
segmentp->unlinkFromDocument(this);
segment_set_t::iterator seg_to_erase(seg_iter++);
mSegments.erase(seg_to_erase);
continue;
}
// deleting head of segment
else
{
segmentp->setStart(pos);
segmentp->setEnd(segmentp->getEnd() - length);
}
}
else
{
// shifting segments backward to fill deleted portion
segmentp->setStart(segmentp->getStart() - length);
segmentp->setEnd(segmentp->getEnd() - length);
}
++seg_iter;
}
text.erase(pos, length);
getViewModel()->setDisplay(text);
// recreate default segment in case we erased everything
createDefaultSegment();
onValueChange(pos, pos);
needsReflow(pos);
return -length; // This will be wrong if someone calls removeStringNoUndo with an excessive length
}
S32 LLTextBase::overwriteCharNoUndo(S32 pos, llwchar wc)
{
if (pos > (S32)getLength())
{
return 0;
}
LLWString text(getWText());
text[pos] = wc;
getViewModel()->setDisplay(text);
onValueChange(pos, pos + 1);
needsReflow(pos);
return 1;
}
void LLTextBase::createDefaultSegment()
{
// ensures that there is always at least one segment
if (mSegments.empty())
{
LLStyleConstSP sp(new LLStyle(getDefaultStyleParams()));
LLTextSegmentPtr default_segment = new LLNormalTextSegment( sp, 0, getLength() + 1, *this);
mSegments.insert(default_segment);
default_segment->linkToDocument(this);
}
}
void LLTextBase::insertSegment(LLTextSegmentPtr segment_to_insert)
{
if (segment_to_insert.isNull())
{
return;
}
segment_set_t::iterator cur_seg_iter = getSegIterContaining(segment_to_insert->getStart());
S32 reflow_start_index = 0;
if (cur_seg_iter == mSegments.end())
{
mSegments.insert(segment_to_insert);
segment_to_insert->linkToDocument(this);
reflow_start_index = segment_to_insert->getStart();
}
else
{
LLTextSegmentPtr cur_segmentp = *cur_seg_iter;
reflow_start_index = cur_segmentp->getStart();
if (cur_segmentp->getStart() < segment_to_insert->getStart())
{
S32 old_segment_end = cur_segmentp->getEnd();
// split old at start point for new segment
cur_segmentp->setEnd(segment_to_insert->getStart());
// advance to next segment
// insert remainder of old segment
LLStyleConstSP sp = cur_segmentp->getStyle();
LLTextSegmentPtr remainder_segment = new LLNormalTextSegment( sp, segment_to_insert->getStart(), old_segment_end, *this);
mSegments.insert(cur_seg_iter, remainder_segment);
remainder_segment->linkToDocument(this);
// insert new segment before remainder of old segment
mSegments.insert(cur_seg_iter, segment_to_insert);
segment_to_insert->linkToDocument(this);
// at this point, there will be two overlapping segments owning the text
// associated with the incoming segment
}
else
{
mSegments.insert(cur_seg_iter, segment_to_insert);
segment_to_insert->linkToDocument(this);
}
// now delete/truncate remaining segments as necessary
// cur_seg_iter points to segment before incoming segment
while(cur_seg_iter != mSegments.end())
{
cur_segmentp = *cur_seg_iter;
if (cur_segmentp == segment_to_insert)
{
++cur_seg_iter;
continue;
}
if (cur_segmentp->getStart() >= segment_to_insert->getStart())
{
if(cur_segmentp->getEnd() <= segment_to_insert->getEnd())
{
cur_segmentp->unlinkFromDocument(this);
// grab copy of iterator to erase, and bump it
segment_set_t::iterator seg_to_erase(cur_seg_iter++);
mSegments.erase(seg_to_erase);
continue;
}
else
{
// last overlapping segment, clip to end of incoming segment
// and stop traversal
cur_segmentp->setStart(segment_to_insert->getEnd());
break;
}
}
++cur_seg_iter;
}
}
// layout potentially changed
needsReflow(reflow_start_index);
}
BOOL LLTextBase::handleMouseDown(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleMouseDown(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleMouseDown(x, y, mask);
}
BOOL LLTextBase::handleMouseUp(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleMouseUp(x, y, mask))
{
// Did we just click on a link?
if (cur_segment->getStyle()
&& cur_segment->getStyle()->isLink())
{
// *TODO: send URL here?
mURLClickSignal(this, LLSD() );
}
return TRUE;
}
return LLUICtrl::handleMouseUp(x, y, mask);
}
BOOL LLTextBase::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleMiddleMouseDown(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleMiddleMouseDown(x, y, mask);
}
BOOL LLTextBase::handleMiddleMouseUp(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleMiddleMouseUp(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleMiddleMouseUp(x, y, mask);
}
BOOL LLTextBase::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleRightMouseDown(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleRightMouseDown(x, y, mask);
}
BOOL LLTextBase::handleRightMouseUp(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleRightMouseUp(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleRightMouseUp(x, y, mask);
}
BOOL LLTextBase::handleDoubleClick(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleDoubleClick(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleDoubleClick(x, y, mask);
}
BOOL LLTextBase::handleHover(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleHover(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleHover(x, y, mask);
}
BOOL LLTextBase::handleScrollWheel(S32 x, S32 y, S32 clicks)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleScrollWheel(x, y, clicks))
{
return TRUE;
}
return LLUICtrl::handleScrollWheel(x, y, clicks);
}
BOOL LLTextBase::handleToolTip(S32 x, S32 y, MASK mask)
{
LLTextSegmentPtr cur_segment = getSegmentAtLocalPos(x, y);
if (cur_segment && cur_segment->handleToolTip(x, y, mask))
{
return TRUE;
}
return LLUICtrl::handleToolTip(x, y, mask);
}
void LLTextBase::reshape(S32 width, S32 height, BOOL called_from_parent)
{
if (width != getRect().getWidth() || height != getRect().getHeight())
{
bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false;
LLUICtrl::reshape( width, height, called_from_parent );
if (mScroller && scrolled_to_bottom && mTrackEnd)
{
// keep bottom of text buffer visible
// do this here as well as in reflow to handle case
// where shrinking from top, which causes buffer to temporarily
// not be scrolled to the bottom, since the scroll index
// specified the _top_ of the visible document region
mScroller->goToBottom();
}
// do this first after reshape, because other things depend on
// up-to-date mVisibleTextRect
updateRects();
needsReflow();
}
}
void LLTextBase::draw()
{
// reflow if needed, on demand
reflow();
// then update scroll position, as cursor may have moved
if (!mReadOnly)
{
updateScrollFromCursor();
}
LLRect doc_rect;
if (mScroller)
{
mScroller->localRectToOtherView(mScroller->getContentWindowRect(), &doc_rect, this);
}
else
{
doc_rect = getLocalRect();
}
if (mBGVisible)
{
// clip background rect against extents, if we support scrolling
LLLocalClipRect clip(doc_rect, mScroller != NULL);
LLColor4 bg_color = mReadOnly
? mReadOnlyBgColor.get()
: hasFocus()
? mFocusBgColor.get()
: mWriteableBgColor.get();
gl_rect_2d(mVisibleTextRect, bg_color, TRUE);
}
// draw document view
LLUICtrl::draw();
{
// only clip if we support scrolling (mScroller != NULL)
LLLocalClipRect clip(doc_rect, mScroller != NULL);
drawSelectionBackground();
drawText();
drawCursor();
}
}
//virtual
void LLTextBase::setColor( const LLColor4& c )
{
mFgColor = c;
}
//virtual
void LLTextBase::setReadOnlyColor(const LLColor4 &c)
{
mReadOnlyFgColor = c;
}
//virtual
void LLTextBase::handleVisibilityChange( BOOL new_visibility )
{
if(!new_visibility && mPopupMenu)
{
mPopupMenu->hide();
}
LLUICtrl::handleVisibilityChange(new_visibility);
}
//virtual
void LLTextBase::setValue(const LLSD& value )
{
setText(value.asString());
}
//virtual
BOOL LLTextBase::canDeselect() const
{
return hasSelection();
}
//virtual
void LLTextBase::deselect()
{
mSelectionStart = 0;
mSelectionEnd = 0;
mIsSelecting = FALSE;
}
// Sets the scrollbar from the cursor position
void LLTextBase::updateScrollFromCursor()
{
// Update scroll position even in read-only mode (when there's no cursor displayed)
// because startOfDoc()/endOfDoc() modify cursor position. See EXT-736.
if (!mScrollNeeded || !mScroller)
{
return;
}
mScrollNeeded = FALSE;
// scroll so that the cursor is at the top of the page
LLRect scroller_doc_window = getVisibleDocumentRect();
LLRect cursor_rect_doc = getLocalRectFromDocIndex(mCursorPos);
cursor_rect_doc.translate(scroller_doc_window.mLeft, scroller_doc_window.mBottom);
mScroller->scrollToShowRect(cursor_rect_doc, LLRect(0, scroller_doc_window.getHeight() - 5, scroller_doc_window.getWidth(), 5));
}
S32 LLTextBase::getLeftOffset(S32 width)
{
switch (mHAlign)
{
case LLFontGL::LEFT:
return mHPad;
case LLFontGL::HCENTER:
return mHPad + llmax(0, (mVisibleTextRect.getWidth() - width - mHPad) / 2);
case LLFontGL::RIGHT:
return mVisibleTextRect.getWidth() - width;
default:
return mHPad;
}
}
static LLFastTimer::DeclareTimer FTM_TEXT_REFLOW ("Text Reflow");
void LLTextBase::reflow()
{
LLFastTimer ft(FTM_TEXT_REFLOW);
updateSegments();
if (mReflowIndex == S32_MAX)
{
return;
}
bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false;
LLRect cursor_rect = getLocalRectFromDocIndex(mCursorPos);
bool follow_selection = getLocalRect().overlaps(cursor_rect); // cursor is (potentially) visible
// store in top-left relative coordinates to avoid issues with horizontal scrollbar appearing and disappearing
cursor_rect.mTop = mVisibleTextRect.mTop - cursor_rect.mTop;
cursor_rect.mBottom = mVisibleTextRect.mTop - cursor_rect.mBottom;
S32 first_line = getFirstVisibleLine();
// if scroll anchor not on first line, update it to first character of first line
if (!mLineInfoList.empty()
&& (mScrollIndex < mLineInfoList[first_line].mDocIndexStart
|| mScrollIndex >= mLineInfoList[first_line].mDocIndexEnd))
{
mScrollIndex = mLineInfoList[first_line].mDocIndexStart;
}
LLRect first_char_rect = getLocalRectFromDocIndex(mScrollIndex);
// store in top-left relative coordinates to avoid issues with horizontal scrollbar appearing and disappearing
first_char_rect.mTop = mVisibleTextRect.mTop - first_char_rect.mTop;
first_char_rect.mBottom = mVisibleTextRect.mTop - first_char_rect.mBottom;
S32 reflow_count = 0;
while(mReflowIndex < S32_MAX)
{
// we can get into an infinite loop if the document height does not monotonically increase
// with decreasing width (embedded ui elements with alternate layouts). In that case,
// we want to stop reflowing after 2 iterations. We use 2, since we need to handle the case
// of introducing a vertical scrollbar causing a reflow with less width. We should also always
// use an even number of iterations to avoid user visible oscillation of the layout
if(++reflow_count > 2)
{
lldebugs << "Breaking out of reflow due to possible infinite loop in " << getName() << llendl;
break;
}
S32 start_index = mReflowIndex;
mReflowIndex = S32_MAX;
// shrink document to minimum size (visible portion of text widget)
// to force inlined widgets with follows set to shrink
mDocumentView->reshape(mVisibleTextRect.getWidth(), mDocumentView->getRect().getHeight());
S32 cur_top = 0;
segment_set_t::iterator seg_iter = mSegments.begin();
S32 seg_offset = 0;
S32 line_start_index = 0;
const S32 text_available_width = mVisibleTextRect.getWidth() - mHPad; // reserve room for margin
S32 remaining_pixels = text_available_width;
S32 line_count = 0;
// find and erase line info structs starting at start_index and going to end of document
if (!mLineInfoList.empty())
{
// find first element whose end comes after start_index
line_list_t::iterator iter = std::upper_bound(mLineInfoList.begin(), mLineInfoList.end(), start_index, line_end_compare());
line_start_index = iter->mDocIndexStart;
line_count = iter->mLineNum;
cur_top = iter->mRect.mTop;
getSegmentAndOffset(iter->mDocIndexStart, &seg_iter, &seg_offset);
mLineInfoList.erase(iter, mLineInfoList.end());
}
S32 line_height = 0;
while(seg_iter != mSegments.end())
{
LLTextSegmentPtr segment = *seg_iter;
// track maximum height of any segment on this line
S32 cur_index = segment->getStart() + seg_offset;
// ask segment how many character fit in remaining space
S32 character_count = segment->getNumChars(getWordWrap() ? llmax(0, remaining_pixels) : S32_MAX,
seg_offset,
cur_index - line_start_index,
S32_MAX);
S32 segment_width, segment_height;
bool force_newline = segment->getDimensions(seg_offset, character_count, segment_width, segment_height);
// grow line height as necessary based on reported height of this segment
line_height = llmax(line_height, segment_height);
remaining_pixels -= segment_width;
seg_offset += character_count;
S32 last_segment_char_on_line = segment->getStart() + seg_offset;
S32 text_actual_width = text_available_width - remaining_pixels;
S32 text_left = getLeftOffset(text_actual_width);
LLRect line_rect(text_left,
cur_top,
text_left + text_actual_width,
cur_top - line_height);
// if we didn't finish the current segment...
if (last_segment_char_on_line < segment->getEnd())
{
// add line info and keep going
mLineInfoList.push_back(line_info(
line_start_index,
last_segment_char_on_line,
line_rect,
line_count));
line_start_index = segment->getStart() + seg_offset;
cur_top -= llround((F32)line_height * mLineSpacingMult) + mLineSpacingPixels;
remaining_pixels = text_available_width;
line_height = 0;
}
// ...just consumed last segment..
else if (++segment_set_t::iterator(seg_iter) == mSegments.end())
{
mLineInfoList.push_back(line_info(
line_start_index,
last_segment_char_on_line,
line_rect,
line_count));
cur_top -= llround((F32)line_height * mLineSpacingMult) + mLineSpacingPixels;
break;
}
// ...or finished a segment and there are segments remaining on this line
else
{
// subtract pixels used and increment segment
if (force_newline)
{
mLineInfoList.push_back(line_info(
line_start_index,
last_segment_char_on_line,
line_rect,
line_count));
line_start_index = segment->getStart() + seg_offset;
cur_top -= llround((F32)line_height * mLineSpacingMult) + mLineSpacingPixels;
line_height = 0;
remaining_pixels = text_available_width;
}
++seg_iter;
seg_offset = 0;
}
if (force_newline)
{
line_count++;
}
}
// calculate visible region for diplaying text
updateRects();
for (segment_set_t::iterator segment_it = mSegments.begin();
segment_it != mSegments.end();
++segment_it)
{
LLTextSegmentPtr segmentp = *segment_it;
segmentp->updateLayout(*this);
}
}
// apply scroll constraints after reflowing text
if (!hasMouseCapture() && mScroller)
{
if (scrolled_to_bottom && mTrackEnd)
{
// keep bottom of text buffer visible
endOfDoc();
}
else if (hasSelection() && follow_selection)
{
// keep cursor in same vertical position on screen when selecting text
LLRect new_cursor_rect_doc = getDocRectFromDocIndex(mCursorPos);
LLRect old_cursor_rect = cursor_rect;
old_cursor_rect.mTop = mVisibleTextRect.mTop - cursor_rect.mTop;
old_cursor_rect.mBottom = mVisibleTextRect.mTop - cursor_rect.mBottom;
mScroller->scrollToShowRect(new_cursor_rect_doc, old_cursor_rect);
}
else
{
// keep first line of text visible
LLRect new_first_char_rect = getDocRectFromDocIndex(mScrollIndex);
// pass in desired rect in the coordinate frame of the document viewport
LLRect old_first_char_rect = first_char_rect;
old_first_char_rect.mTop = mVisibleTextRect.mTop - first_char_rect.mTop;
old_first_char_rect.mBottom = mVisibleTextRect.mTop - first_char_rect.mBottom;
mScroller->scrollToShowRect(new_first_char_rect, old_first_char_rect);
}
}
// reset desired x cursor position
updateCursorXPos();
}
LLRect LLTextBase::getTextBoundingRect()
{
reflow();
return mTextBoundingRect;
}
void LLTextBase::clearSegments()
{
mSegments.clear();
createDefaultSegment();
}
S32 LLTextBase::getLineStart( S32 line ) const
{
S32 num_lines = getLineCount();
if (num_lines == 0)
{
return 0;
}
line = llclamp(line, 0, num_lines-1);
return mLineInfoList[line].mDocIndexStart;
}
S32 LLTextBase::getLineEnd( S32 line ) const
{
S32 num_lines = getLineCount();
if (num_lines == 0)
{
return 0;
}
line = llclamp(line, 0, num_lines-1);
return mLineInfoList[line].mDocIndexEnd;
}
S32 LLTextBase::getLineNumFromDocIndex( S32 doc_index, bool include_wordwrap) const
{
if (mLineInfoList.empty())
{
return 0;
}
else
{
line_list_t::const_iterator iter = std::upper_bound(mLineInfoList.begin(), mLineInfoList.end(), doc_index, line_end_compare());
if (include_wordwrap)
{
return iter - mLineInfoList.begin();
}
else
{
if (iter == mLineInfoList.end())
{
return mLineInfoList.back().mLineNum;
}
else
{
return iter->mLineNum;
}
}
}
}
// Given an offset into text (pos), find the corresponding line (from the start of the doc) and an offset into the line.
S32 LLTextBase::getLineOffsetFromDocIndex( S32 startpos, bool include_wordwrap) const
{
if (mLineInfoList.empty())
{
return startpos;
}
else
{
line_list_t::const_iterator iter = std::upper_bound(mLineInfoList.begin(), mLineInfoList.end(), startpos, line_end_compare());
return startpos - iter->mDocIndexStart;
}
}
S32 LLTextBase::getFirstVisibleLine() const
{
LLRect visible_region = getVisibleDocumentRect();
// binary search for line that starts before top of visible buffer
line_list_t::const_iterator iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), visible_region.mTop, compare_bottom());
return iter - mLineInfoList.begin();
}
std::pair<S32, S32> LLTextBase::getVisibleLines(bool fully_visible)
{
LLRect visible_region = getVisibleDocumentRect();
line_list_t::const_iterator first_iter;
line_list_t::const_iterator last_iter;
// make sure we have an up-to-date mLineInfoList
reflow();
if (fully_visible)
{
first_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), visible_region.mTop, compare_top());
last_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), visible_region.mBottom, compare_bottom());
}
else
{
first_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), visible_region.mTop, compare_bottom());
last_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), visible_region.mBottom, compare_top());
}
return std::pair<S32, S32>(first_iter - mLineInfoList.begin(), last_iter - mLineInfoList.begin());
}
LLTextViewModel* LLTextBase::getViewModel() const
{
return (LLTextViewModel*)mViewModel.get();
}
void LLTextBase::addDocumentChild(LLView* view)
{
mDocumentView->addChild(view);
}
void LLTextBase::removeDocumentChild(LLView* view)
{
mDocumentView->removeChild(view);
}
static LLFastTimer::DeclareTimer FTM_UPDATE_TEXT_SEGMENTS("Update Text Segments");
void LLTextBase::updateSegments()
{
LLFastTimer ft(FTM_UPDATE_TEXT_SEGMENTS);
createDefaultSegment();
}
void LLTextBase::getSegmentAndOffset( S32 startpos, segment_set_t::const_iterator* seg_iter, S32* offsetp ) const
{
*seg_iter = getSegIterContaining(startpos);
if (*seg_iter == mSegments.end())
{
*offsetp = 0;
}
else
{
*offsetp = startpos - (**seg_iter)->getStart();
}
}
void LLTextBase::getSegmentAndOffset( S32 startpos, segment_set_t::iterator* seg_iter, S32* offsetp )
{
*seg_iter = getSegIterContaining(startpos);
if (*seg_iter == mSegments.end())
{
*offsetp = 0;
}
else
{
*offsetp = startpos - (**seg_iter)->getStart();
}
}
LLTextBase::segment_set_t::iterator LLTextBase::getSegIterContaining(S32 index)
{
segment_set_t::iterator it = mSegments.upper_bound(new LLIndexSegment(index));
return it;
}
LLTextBase::segment_set_t::const_iterator LLTextBase::getSegIterContaining(S32 index) const
{
LLTextBase::segment_set_t::const_iterator it = mSegments.upper_bound(new LLIndexSegment(index));
return it;
}
// Finds the text segment (if any) at the give local screen position
LLTextSegmentPtr LLTextBase::getSegmentAtLocalPos( S32 x, S32 y, bool hit_past_end_of_line)
{
// Find the cursor position at the requested local screen position
S32 offset = getDocIndexFromLocalCoord( x, y, FALSE, hit_past_end_of_line);
segment_set_t::iterator seg_iter = getSegIterContaining(offset);
if (seg_iter != mSegments.end())
{
return *seg_iter;
}
else
{
return LLTextSegmentPtr();
}
}
void LLTextBase::createUrlContextMenu(S32 x, S32 y, const std::string &in_url)
{
// work out the XUI menu file to use for this url
LLUrlMatch match;
std::string url = in_url;
if (! LLUrlRegistry::instance().findUrl(url, match))
{
return;
}
std::string xui_file = match.getMenuName();
if (xui_file.empty())
{
return;
}
// set up the callbacks for all of the potential menu items, N.B. we
// don't use const ref strings in callbacks in case url goes out of scope
LLUICtrl::CommitCallbackRegistry::ScopedRegistrar registrar;
registrar.add("Url.Open", boost::bind(&LLUrlAction::openURL, url));
registrar.add("Url.OpenInternal", boost::bind(&LLUrlAction::openURLInternal, url));
registrar.add("Url.OpenExternal", boost::bind(&LLUrlAction::openURLExternal, url));
registrar.add("Url.Execute", boost::bind(&LLUrlAction::executeSLURL, url));
registrar.add("Url.Teleport", boost::bind(&LLUrlAction::teleportToLocation, url));
registrar.add("Url.ShowProfile", boost::bind(&LLUrlAction::showProfile, url));
registrar.add("Url.ShowOnMap", boost::bind(&LLUrlAction::showLocationOnMap, url));
registrar.add("Url.CopyLabel", boost::bind(&LLUrlAction::copyLabelToClipboard, url));
registrar.add("Url.CopyUrl", boost::bind(&LLUrlAction::copyURLToClipboard, url));
// create and return the context menu from the XUI file
delete mPopupMenu;
mPopupMenu = LLUICtrlFactory::getInstance()->createFromFile<LLContextMenu>(xui_file, LLMenuGL::sMenuContainer,
LLMenuHolderGL::child_registry_t::instance());
if (mPopupMenu)
{
mPopupMenu->show(x, y);
LLMenuGL::showPopup(this, mPopupMenu, x, y);
}
}
void LLTextBase::setText(const LLStringExplicit &utf8str, const LLStyle::Params& input_params)
{
// clear out the existing text and segments
getViewModel()->setDisplay(LLWStringUtil::null);
clearSegments();
// createDefaultSegment();
deselect();
// append the new text (supports Url linking)
std::string text(utf8str);
LLStringUtil::removeCRLF(text);
// appendText modifies mCursorPos...
appendText(text, false, input_params);
// ...so move cursor to top after appending text
startOfDoc();
onValueChange(0, getLength());
}
//virtual
std::string LLTextBase::getText() const
{
return getViewModel()->getValue().asString();
}
void LLTextBase::appendTextImpl(const std::string &new_text, const LLStyle::Params& input_params)
{
LLStyle::Params style_params(input_params);
style_params.fillFrom(getDefaultStyleParams());
S32 part = (S32)LLTextParser::WHOLE;
if(mParseHTML)
{
S32 start=0,end=0;
LLUrlMatch match;
std::string text = new_text;
while ( LLUrlRegistry::instance().findUrl(text, match,
boost::bind(&LLTextBase::replaceUrlLabel, this, _1, _2)) )
{
start = match.getStart();
end = match.getEnd()+1;
LLStyle::Params link_params = style_params;
link_params.color = match.getColor();
link_params.readonly_color = match.getColor();
link_params.font.style("UNDERLINE");
link_params.link_href = match.getUrl();
// output the text before the Url
if (start > 0)
{
if (part == (S32)LLTextParser::WHOLE ||
part == (S32)LLTextParser::START)
{
part = (S32)LLTextParser::START;
}
else
{
part = (S32)LLTextParser::MIDDLE;
}
std::string subtext=text.substr(0,start);
appendAndHighlightText(subtext, part, style_params);
}
// output an optional icon before the Url
if (! match.getIcon().empty())
{
LLUIImagePtr image = LLUI::getUIImage(match.getIcon());
if (image)
{
LLStyle::Params icon;
icon.image = image;
// Text will be replaced during rendering with the icon,
// but string cannot be empty or the segment won't be
// added (or drawn).
appendImageSegment(part, icon);
}
}
// output the styled Url (unless we've been asked to suppress hyperlinking)
if (match.isLinkDisabled())
{
appendAndHighlightText(match.getLabel(), part, style_params);
}
else
{
appendAndHighlightText(match.getLabel(), part, link_params);
// set the tooltip for the Url label
if (! match.getTooltip().empty())
{
segment_set_t::iterator it = getSegIterContaining(getLength()-1);
if (it != mSegments.end())
{
LLTextSegmentPtr segment = *it;
segment->setToolTip(match.getTooltip());
}
}
}
// move on to the rest of the text after the Url
if (end < (S32)text.length())
{
text = text.substr(end,text.length() - end);
end=0;
part=(S32)LLTextParser::END;
}
else
{
break;
}
}
if (part != (S32)LLTextParser::WHOLE)
part=(S32)LLTextParser::END;
if (end < (S32)text.length())
appendAndHighlightText(text, part, style_params);
}
else
{
appendAndHighlightText(new_text, part, style_params);
}
}
void LLTextBase::appendText(const std::string &new_text, bool prepend_newline, const LLStyle::Params& input_params)
{
if (new_text.empty())
return;
if(prepend_newline)
appendLineBreakSegment(input_params);
appendTextImpl(new_text,input_params);
}
void LLTextBase::needsReflow(S32 index)
{
lldebugs << "reflow on object " << (void*)this << " index = " << mReflowIndex << ", new index = " << index << llendl;
mReflowIndex = llmin(mReflowIndex, index);
}
void LLTextBase::appendLineBreakSegment(const LLStyle::Params& style_params)
{
segment_vec_t segments;
LLStyleConstSP sp(new LLStyle(style_params));
segments.push_back(new LLLineBreakTextSegment(sp, getLength()));
insertStringNoUndo(getLength(), utf8str_to_wstring("\n"), &segments);
}
void LLTextBase::appendImageSegment(S32 highlight_part, const LLStyle::Params& style_params)
{
if(getPlainText())
{
return;
}
segment_vec_t segments;
LLStyleConstSP sp(new LLStyle(style_params));
segments.push_back(new LLImageTextSegment(sp, getLength(),*this));
insertStringNoUndo(getLength(), utf8str_to_wstring(" "), &segments);
}
void LLTextBase::appendAndHighlightTextImpl(const std::string &new_text, S32 highlight_part, const LLStyle::Params& style_params)
{
// Save old state
S32 selection_start = mSelectionStart;
S32 selection_end = mSelectionEnd;
BOOL was_selecting = mIsSelecting;
S32 cursor_pos = mCursorPos;
S32 old_length = getLength();
BOOL cursor_was_at_end = (mCursorPos == old_length);
deselect();
setCursorPos(old_length);
if (mParseHighlights)
{
LLStyle::Params highlight_params(style_params);
LLSD pieces = LLTextParser::instance().parsePartialLineHighlights(new_text, highlight_params.color(), (LLTextParser::EHighlightPosition)highlight_part);
for (S32 i = 0; i < pieces.size(); i++)
{
LLSD color_llsd = pieces[i]["color"];
LLColor4 lcolor;
lcolor.setValue(color_llsd);
highlight_params.color = lcolor;
LLWString wide_text;
wide_text = utf8str_to_wstring(pieces[i]["text"].asString());
S32 cur_length = getLength();
LLStyleConstSP sp(new LLStyle(highlight_params));
LLTextSegmentPtr segmentp = new LLNormalTextSegment(sp, cur_length, cur_length + wide_text.size(), *this);
segment_vec_t segments;
segments.push_back(segmentp);
insertStringNoUndo(cur_length, wide_text, &segments);
}
}
else
{
LLWString wide_text;
wide_text = utf8str_to_wstring(new_text);
segment_vec_t segments;
S32 segment_start = old_length;
S32 segment_end = old_length + wide_text.size();
LLStyleConstSP sp(new LLStyle(style_params));
segments.push_back(new LLNormalTextSegment(sp, segment_start, segment_end, *this ));
insertStringNoUndo(getLength(), wide_text, &segments);
}
// Set the cursor and scroll position
if( selection_start != selection_end )
{
mSelectionStart = selection_start;
mSelectionEnd = selection_end;
mIsSelecting = was_selecting;
setCursorPos(cursor_pos);
}
else if( cursor_was_at_end )
{
setCursorPos(getLength());
}
else
{
setCursorPos(cursor_pos);
}
}
void LLTextBase::appendAndHighlightText(const std::string &new_text, S32 highlight_part, const LLStyle::Params& style_params)
{
if (new_text.empty()) return;
std::string::size_type start = 0;
std::string::size_type pos = new_text.find("\n",start);
while(pos!=-1)
{
if(pos!=start)
{
std::string str = std::string(new_text,start,pos-start);
appendAndHighlightTextImpl(str,highlight_part, style_params);
}
appendLineBreakSegment(style_params);
start = pos+1;
pos = new_text.find("\n",start);
}
std::string str = std::string(new_text,start,new_text.length()-start);
appendAndHighlightTextImpl(str,highlight_part, style_params);
}
void LLTextBase::replaceUrlLabel(const std::string &url,
const std::string &label)
{
// get the full (wide) text for the editor so we can change it
LLWString text = getWText();
LLWString wlabel = utf8str_to_wstring(label);
bool modified = false;
S32 seg_start = 0;
// iterate through each segment looking for ones styled as links
segment_set_t::iterator it;
for (it = mSegments.begin(); it != mSegments.end(); ++it)
{
LLTextSegment *seg = *it;
LLStyleConstSP style = seg->getStyle();
// update segment start/end length in case we replaced text earlier
S32 seg_length = seg->getEnd() - seg->getStart();
seg->setStart(seg_start);
seg->setEnd(seg_start + seg_length);
// if we find a link with our Url, then replace the label
if (style->isLink() && style->getLinkHREF() == url)
{
S32 start = seg->getStart();
S32 end = seg->getEnd();
text = text.substr(0, start) + wlabel + text.substr(end, text.size() - end + 1);
seg->setEnd(start + wlabel.size());
modified = true;
}
// work out the character offset for the next segment
seg_start = seg->getEnd();
}
// update the editor with the new (wide) text string
if (modified)
{
getViewModel()->setDisplay(text);
deselect();
setCursorPos(mCursorPos);
needsReflow();
}
}
void LLTextBase::setWText(const LLWString& text)
{
setText(wstring_to_utf8str(text));
}
const LLWString& LLTextBase::getWText() const
{
return getViewModel()->getDisplay();
}
// If round is true, if the position is on the right half of a character, the cursor
// will be put to its right. If round is false, the cursor will always be put to the
// character's left.
S32 LLTextBase::getDocIndexFromLocalCoord( S32 local_x, S32 local_y, BOOL round, bool hit_past_end_of_line) const
{
// Figure out which line we're nearest to.
LLRect visible_region = getVisibleDocumentRect();
// binary search for line that starts before local_y
line_list_t::const_iterator line_iter = std::lower_bound(mLineInfoList.begin(), mLineInfoList.end(), local_y - mVisibleTextRect.mBottom + visible_region.mBottom, compare_bottom());
if (line_iter == mLineInfoList.end())
{
return getLength(); // past the end
}
S32 pos = getLength();
S32 start_x = mVisibleTextRect.mLeft + line_iter->mRect.mLeft - visible_region.mLeft;
segment_set_t::iterator line_seg_iter;
S32 line_seg_offset;
for(getSegmentAndOffset(line_iter->mDocIndexStart, &line_seg_iter, &line_seg_offset);
line_seg_iter != mSegments.end();
++line_seg_iter, line_seg_offset = 0)
{
const LLTextSegmentPtr segmentp = *line_seg_iter;
S32 segment_line_start = segmentp->getStart() + line_seg_offset;
S32 segment_line_length = llmin(segmentp->getEnd(), line_iter->mDocIndexEnd) - segment_line_start;
S32 text_width, text_height;
bool newline = segmentp->getDimensions(line_seg_offset, segment_line_length, text_width, text_height);
if(newline)
{
pos = segment_line_start + segmentp->getOffset(local_x - start_x, line_seg_offset, segment_line_length, round);
break;
}
// if we've reached a line of text *below* the mouse cursor, doc index is first character on that line
if (hit_past_end_of_line && local_y - mVisibleTextRect.mBottom + visible_region.mBottom > line_iter->mRect.mTop)
{
pos = segment_line_start;
break;
}
if (local_x < start_x + text_width) // cursor to left of right edge of text
{
// Figure out which character we're nearest to.
S32 offset;
if (!segmentp->canEdit())
{
S32 segment_width, segment_height;
segmentp->getDimensions(0, segmentp->getEnd() - segmentp->getStart(), segment_width, segment_height);
if (round && local_x - start_x > segment_width / 2)
{
offset = segment_line_length;
}
else
{
offset = 0;
}
}
else
{
offset = segmentp->getOffset(local_x - start_x, line_seg_offset, segment_line_length, round);
}
pos = segment_line_start + offset;
break;
}
else if (hit_past_end_of_line && segmentp->getEnd() > line_iter->mDocIndexEnd - 1)
{
// segment wraps to next line, so just set doc pos to the end of the line
// segment wraps to next line, so just set doc pos to start of next line (represented by mDocIndexEnd)
pos = llmin(getLength(), line_iter->mDocIndexEnd);
break;
}
start_x += text_width;
}
return pos;
}
// returns rectangle of insertion caret
// in document coordinate frame from given index into text
LLRect LLTextBase::getDocRectFromDocIndex(S32 pos) const
{
if (mLineInfoList.empty())
{
return LLRect();
}
LLRect doc_rect;
// clamp pos to valid values
pos = llclamp(pos, 0, mLineInfoList.back().mDocIndexEnd - 1);
// find line that contains cursor
line_list_t::const_iterator line_iter = std::upper_bound(mLineInfoList.begin(), mLineInfoList.end(), pos, line_end_compare());
doc_rect.mLeft = line_iter->mRect.mLeft;
doc_rect.mBottom = line_iter->mRect.mBottom;
doc_rect.mTop = line_iter->mRect.mTop;
segment_set_t::iterator line_seg_iter;
S32 line_seg_offset;
segment_set_t::iterator cursor_seg_iter;
S32 cursor_seg_offset;
getSegmentAndOffset(line_iter->mDocIndexStart, &line_seg_iter, &line_seg_offset);
getSegmentAndOffset(pos, &cursor_seg_iter, &cursor_seg_offset);
while(line_seg_iter != mSegments.end())
{
const LLTextSegmentPtr segmentp = *line_seg_iter;
if (line_seg_iter == cursor_seg_iter)
{
// cursor advanced to right based on difference in offset of cursor to start of line
S32 segment_width, segment_height;
segmentp->getDimensions(line_seg_offset, cursor_seg_offset - line_seg_offset, segment_width, segment_height);
doc_rect.mLeft += segment_width;
break;
}
else
{
// add remainder of current text segment to cursor position
S32 segment_width, segment_height;
segmentp->getDimensions(line_seg_offset, (segmentp->getEnd() - segmentp->getStart()) - line_seg_offset, segment_width, segment_height);
doc_rect.mLeft += segment_width;
// offset will be 0 for all segments after the first
line_seg_offset = 0;
// go to next text segment on this line
++line_seg_iter;
}
}
// set rect to 0 width
doc_rect.mRight = doc_rect.mLeft;
return doc_rect;
}
LLRect LLTextBase::getLocalRectFromDocIndex(S32 pos) const
{
LLRect content_window_rect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
if (mBorderVisible)
{
content_window_rect.stretch(-1);
}
LLRect local_rect;
if (mLineInfoList.empty())
{
// return default height rect in upper left
local_rect = content_window_rect;
local_rect.mBottom = local_rect.mTop - (S32)(mDefaultFont->getLineHeight());
return local_rect;
}
// get the rect in document coordinates
LLRect doc_rect = getDocRectFromDocIndex(pos);
// compensate for scrolled, inset view of doc
LLRect scrolled_view_rect = getVisibleDocumentRect();
local_rect = doc_rect;
local_rect.translate(content_window_rect.mLeft - scrolled_view_rect.mLeft,
content_window_rect.mBottom - scrolled_view_rect.mBottom);
return local_rect;
}
void LLTextBase::updateCursorXPos()
{
// reset desired x cursor position
mDesiredXPixel = getLocalRectFromDocIndex(mCursorPos).mLeft;
}
void LLTextBase::startOfLine()
{
S32 offset = getLineOffsetFromDocIndex(mCursorPos);
setCursorPos(mCursorPos - offset);
}
void LLTextBase::endOfLine()
{
S32 line = getLineNumFromDocIndex(mCursorPos);
S32 num_lines = getLineCount();
if (line + 1 >= num_lines)
{
setCursorPos(getLength());
}
else
{
setCursorPos( getLineStart(line + 1) - 1 );
}
}
void LLTextBase::startOfDoc()
{
setCursorPos(0);
if (mScroller)
{
mScroller->goToTop();
}
}
void LLTextBase::endOfDoc()
{
setCursorPos(getLength());
if (mScroller)
{
mScroller->goToBottom();
}
}
void LLTextBase::changePage( S32 delta )
{
const S32 PIXEL_OVERLAP_ON_PAGE_CHANGE = 10;
if (delta == 0 || !mScroller) return;
LLRect cursor_rect = getLocalRectFromDocIndex(mCursorPos);
if( delta == -1 )
{
mScroller->pageUp(PIXEL_OVERLAP_ON_PAGE_CHANGE);
}
else
if( delta == 1 )
{
mScroller->pageDown(PIXEL_OVERLAP_ON_PAGE_CHANGE);
}
if (getLocalRectFromDocIndex(mCursorPos) == cursor_rect)
{
// cursor didn't change apparent position, so move to top or bottom of document, respectively
if (delta < 0)
{
startOfDoc();
}
else
{
endOfDoc();
}
}
else
{
setCursorAtLocalPos(cursor_rect.getCenterX(), cursor_rect.getCenterY(), true, false);
}
}
// Picks a new cursor position based on the screen size of text being drawn.
void LLTextBase::setCursorAtLocalPos( S32 local_x, S32 local_y, bool round, bool keep_cursor_offset )
{
setCursorPos(getDocIndexFromLocalCoord(local_x, local_y, round), keep_cursor_offset);
}
void LLTextBase::changeLine( S32 delta )
{
S32 line = getLineNumFromDocIndex(mCursorPos);
S32 new_line = line;
if( (delta < 0) && (line > 0 ) )
{
new_line = line - 1;
}
else if( (delta > 0) && (line < (getLineCount() - 1)) )
{
new_line = line + 1;
}
LLRect visible_region = getVisibleDocumentRect();
S32 new_cursor_pos = getDocIndexFromLocalCoord(mDesiredXPixel, mLineInfoList[new_line].mRect.mBottom + mVisibleTextRect.mBottom - visible_region.mBottom, TRUE);
setCursorPos(new_cursor_pos, true);
}
bool LLTextBase::scrolledToStart()
{
return mScroller->isAtTop();
}
bool LLTextBase::scrolledToEnd()
{
return mScroller->isAtBottom();
}
bool LLTextBase::setCursor(S32 row, S32 column)
{
if (0 <= row && row < (S32)mLineInfoList.size())
{
S32 doc_pos = mLineInfoList[row].mDocIndexStart;
column = llclamp(column, 0, mLineInfoList[row].mDocIndexEnd - mLineInfoList[row].mDocIndexStart - 1);
doc_pos += column;
updateCursorXPos();
return setCursorPos(doc_pos);
}
return false;
}
bool LLTextBase::setCursorPos(S32 cursor_pos, bool keep_cursor_offset)
{
S32 new_cursor_pos = cursor_pos;
if (new_cursor_pos != mCursorPos)
{
new_cursor_pos = getEditableIndex(new_cursor_pos, new_cursor_pos >= mCursorPos);
}
mCursorPos = llclamp(new_cursor_pos, 0, (S32)getLength());
needsScroll();
if (!keep_cursor_offset)
updateCursorXPos();
// did we get requested position?
return new_cursor_pos == cursor_pos;
}
// constraint cursor to editable segments of document
S32 LLTextBase::getEditableIndex(S32 index, bool increasing_direction)
{
segment_set_t::iterator segment_iter;
S32 offset;
getSegmentAndOffset(index, &segment_iter, &offset);
if (segment_iter == mSegments.end())
{
return 0;
}
LLTextSegmentPtr segmentp = *segment_iter;
if (segmentp->canEdit())
{
return segmentp->getStart() + offset;
}
else if (segmentp->getStart() < index && index < segmentp->getEnd())
{
// bias towards document end
if (increasing_direction)
{
return segmentp->getEnd();
}
// bias towards document start
else
{
return segmentp->getStart();
}
}
else
{
return index;
}
}
void LLTextBase::updateRects()
{
if (mLineInfoList.empty())
{
mTextBoundingRect = LLRect(0, mVPad, mHPad, 0);
}
else
{
mTextBoundingRect = mLineInfoList.begin()->mRect;
for (line_list_t::const_iterator line_iter = ++mLineInfoList.begin();
line_iter != mLineInfoList.end();
++line_iter)
{
mTextBoundingRect.unionWith(line_iter->mRect);
}
mTextBoundingRect.mTop += mVPad;
// subtract a pixel off the bottom to deal with rounding errors in measuring font height
mTextBoundingRect.mBottom -= 1;
S32 delta_pos = -mTextBoundingRect.mBottom;
// move line segments to fit new document rect
for (line_list_t::iterator it = mLineInfoList.begin(); it != mLineInfoList.end(); ++it)
{
it->mRect.translate(0, delta_pos);
}
mTextBoundingRect.translate(0, delta_pos);
}
// update document container dimensions according to text contents
LLRect doc_rect = mTextBoundingRect;
// use old mVisibleTextRect constraint document to width of viewable region
doc_rect.mLeft = 0;
// allow horizontal scrolling?
// if so, use entire width of text contents
// otherwise, stop at width of mVisibleTextRect
doc_rect.mRight = mScroller
? llmax(mVisibleTextRect.getWidth(), mTextBoundingRect.mRight)
: mVisibleTextRect.getWidth();
mDocumentView->setShape(doc_rect);
//update mVisibleTextRect *after* mDocumentView has been resized
// so that scrollbars are added if document needs to scroll
// since mVisibleTextRect does not include scrollbars
LLRect old_text_rect = mVisibleTextRect;
mVisibleTextRect = mScroller ? mScroller->getContentWindowRect() : getLocalRect();
//FIXME: replace border with image?
if (mBorderVisible)
{
mVisibleTextRect.stretch(-1);
}
if (mVisibleTextRect != old_text_rect)
{
needsReflow();
}
// update document container again, using new mVisibleTextRect (that has scrollbars enabled as needed)
doc_rect.mRight = mScroller
? llmax(mVisibleTextRect.getWidth(), mTextBoundingRect.mRight)
: mVisibleTextRect.getWidth();
mDocumentView->setShape(doc_rect);
}
void LLTextBase::startSelection()
{
if( !mIsSelecting )
{
mIsSelecting = TRUE;
mSelectionStart = mCursorPos;
mSelectionEnd = mCursorPos;
}
}
void LLTextBase::endSelection()
{
if( mIsSelecting )
{
mIsSelecting = FALSE;
mSelectionEnd = mCursorPos;
}
}
// get portion of document that is visible in text editor
LLRect LLTextBase::getVisibleDocumentRect() const
{
if (mScroller)
{
return mScroller->getVisibleContentRect();
}
else
{
// entire document rect is visible when not scrolling
// but offset according to height of widget
LLRect doc_rect = mDocumentView->getLocalRect();
doc_rect.mLeft -= mDocumentView->getRect().mLeft;
// adjust for height of text above widget baseline
doc_rect.mBottom = doc_rect.getHeight() - mVisibleTextRect.getHeight();
return doc_rect;
}
}
//
// LLTextSegment
//
LLTextSegment::~LLTextSegment()
{}
bool LLTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const { width = 0; height = 0; return false;}
S32 LLTextSegment::getOffset(S32 segment_local_x_coord, S32 start_offset, S32 num_chars, bool round) const { return 0; }
S32 LLTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 line_offset, S32 max_chars) const { return 0; }
void LLTextSegment::updateLayout(const LLTextBase& editor) {}
F32 LLTextSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect) { return draw_rect.mLeft; }
bool LLTextSegment::canEdit() const { return false; }
void LLTextSegment::unlinkFromDocument(LLTextBase*) {}
void LLTextSegment::linkToDocument(LLTextBase*) {}
const LLColor4& LLTextSegment::getColor() const { return LLColor4::white; }
//void LLTextSegment::setColor(const LLColor4 &color) {}
LLStyleConstSP LLTextSegment::getStyle() const {static LLStyleConstSP sp(new LLStyle()); return sp; }
void LLTextSegment::setStyle(LLStyleConstSP style) {}
void LLTextSegment::setToken( LLKeywordToken* token ) {}
LLKeywordToken* LLTextSegment::getToken() const { return NULL; }
void LLTextSegment::setToolTip( const std::string &msg ) {}
void LLTextSegment::dump() const {}
BOOL LLTextSegment::handleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleMiddleMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleMiddleMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleRightMouseUp(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleDoubleClick(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleHover(S32 x, S32 y, MASK mask) { return FALSE; }
BOOL LLTextSegment::handleScrollWheel(S32 x, S32 y, S32 clicks) { return FALSE; }
BOOL LLTextSegment::handleToolTip(S32 x, S32 y, MASK mask) { return FALSE; }
std::string LLTextSegment::getName() const { return ""; }
void LLTextSegment::onMouseCaptureLost() {}
void LLTextSegment::screenPointToLocal(S32 screen_x, S32 screen_y, S32* local_x, S32* local_y) const {}
void LLTextSegment::localPointToScreen(S32 local_x, S32 local_y, S32* screen_x, S32* screen_y) const {}
BOOL LLTextSegment::hasMouseCapture() { return FALSE; }
//
// LLNormalTextSegment
//
LLNormalTextSegment::LLNormalTextSegment( LLStyleConstSP style, S32 start, S32 end, LLTextBase& editor )
: LLTextSegment(start, end),
mStyle( style ),
mToken(NULL),
mEditor(editor)
{
mFontHeight = llceil(mStyle->getFont()->getLineHeight());
LLUIImagePtr image = mStyle->getImage();
if (image.notNull())
{
mImageLoadedConnection = image->addLoadedCallback(boost::bind(&LLTextBase::needsReflow, &mEditor, start));
}
}
LLNormalTextSegment::LLNormalTextSegment( const LLColor4& color, S32 start, S32 end, LLTextBase& editor, BOOL is_visible)
: LLTextSegment(start, end),
mToken(NULL),
mEditor(editor)
{
mStyle = new LLStyle(LLStyle::Params().visible(is_visible).color(color));
mFontHeight = llceil(mStyle->getFont()->getLineHeight());
}
LLNormalTextSegment::~LLNormalTextSegment()
{
mImageLoadedConnection.disconnect();
}
F32 LLNormalTextSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect)
{
if( end - start > 0 )
{
return drawClippedSegment( getStart() + start, getStart() + end, selection_start, selection_end, draw_rect);
}
return draw_rect.mLeft;
}
// Draws a single text segment, reversing the color for selection if needed.
F32 LLNormalTextSegment::drawClippedSegment(S32 seg_start, S32 seg_end, S32 selection_start, S32 selection_end, LLRect rect)
{
F32 alpha = LLViewDrawContext::getCurrentContext().mAlpha;
const LLWString &text = mEditor.getWText();
F32 right_x = rect.mLeft;
if (!mStyle->isVisible())
{
return right_x;
}
const LLFontGL* font = mStyle->getFont();
LLColor4 color = (mEditor.getReadOnly() ? mStyle->getReadOnlyColor() : mStyle->getColor()) % alpha;
if( selection_start > seg_start )
{
// Draw normally
S32 start = seg_start;
S32 end = llmin( selection_start, seg_end );
S32 length = end - start;
font->render(text, start,
rect.mLeft, rect.mTop,
color,
LLFontGL::LEFT, LLFontGL::TOP,
LLFontGL::NORMAL,
mStyle->getShadowType(),
length, rect.getWidth(),
&right_x,
mEditor.getUseEllipses());
}
rect.mLeft = (S32)ceil(right_x);
if( (selection_start < seg_end) && (selection_end > seg_start) )
{
// Draw reversed
S32 start = llmax( selection_start, seg_start );
S32 end = llmin( selection_end, seg_end );
S32 length = end - start;
font->render(text, start,
rect.mLeft, rect.mTop,
LLColor4( 1.f - color.mV[0], 1.f - color.mV[1], 1.f - color.mV[2], 1.f ),
LLFontGL::LEFT, LLFontGL::TOP,
LLFontGL::NORMAL,
LLFontGL::NO_SHADOW,
length, rect.getWidth(),
&right_x,
mEditor.getUseEllipses());
}
rect.mLeft = (S32)ceil(right_x);
if( selection_end < seg_end )
{
// Draw normally
S32 start = llmax( selection_end, seg_start );
S32 end = seg_end;
S32 length = end - start;
font->render(text, start,
rect.mLeft, rect.mTop,
color,
LLFontGL::LEFT, LLFontGL::TOP,
LLFontGL::NORMAL,
mStyle->getShadowType(),
length, rect.getWidth(),
&right_x,
mEditor.getUseEllipses());
}
return right_x;
}
BOOL LLNormalTextSegment::handleHover(S32 x, S32 y, MASK mask)
{
if (getStyle() && getStyle()->isLink())
{
// Only process the click if it's actually in this segment, not to the right of the end-of-line.
if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
{
LLUI::getWindow()->setCursor(UI_CURSOR_HAND);
return TRUE;
}
}
return FALSE;
}
BOOL LLNormalTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
if (getStyle() && getStyle()->isLink())
{
// Only process the click if it's actually in this segment, not to the right of the end-of-line.
if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
{
mEditor.createUrlContextMenu(x, y, getStyle()->getLinkHREF());
return TRUE;
}
}
return FALSE;
}
BOOL LLNormalTextSegment::handleMouseDown(S32 x, S32 y, MASK mask)
{
if (getStyle() && getStyle()->isLink())
{
// Only process the click if it's actually in this segment, not to the right of the end-of-line.
if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
{
// eat mouse down event on hyperlinks, so we get the mouse up
return TRUE;
}
}
return FALSE;
}
BOOL LLNormalTextSegment::handleMouseUp(S32 x, S32 y, MASK mask)
{
if (getStyle() && getStyle()->isLink())
{
// Only process the click if it's actually in this segment, not to the right of the end-of-line.
if(mEditor.getSegmentAtLocalPos(x, y, false) == this)
{
LLUrlAction::clickAction(getStyle()->getLinkHREF());
return TRUE;
}
}
return FALSE;
}
BOOL LLNormalTextSegment::handleToolTip(S32 x, S32 y, MASK mask)
{
std::string msg;
// do we have a tooltip for a loaded keyword (for script editor)?
if (mToken && !mToken->getToolTip().empty())
{
const LLWString& wmsg = mToken->getToolTip();
LLToolTipMgr::instance().show(wstring_to_utf8str(wmsg));
return TRUE;
}
// or do we have an explicitly set tooltip (e.g., for Urls)
if (!mTooltip.empty())
{
LLToolTipMgr::instance().show(mTooltip);
return TRUE;
}
return FALSE;
}
void LLNormalTextSegment::setToolTip(const std::string& tooltip)
{
// we cannot replace a keyword tooltip that's loaded from a file
if (mToken)
{
llwarns << "LLTextSegment::setToolTip: cannot replace keyword tooltip." << llendl;
return;
}
mTooltip = tooltip;
}
bool LLNormalTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
{
height = 0;
width = 0;
if (num_chars > 0)
{
height = mFontHeight;
const LLWString &text = mEditor.getWText();
// if last character is a newline, then return true, forcing line break
width = mStyle->getFont()->getWidth(text.c_str(), mStart + first_char, num_chars);
}
return false;
}
S32 LLNormalTextSegment::getOffset(S32 segment_local_x_coord, S32 start_offset, S32 num_chars, bool round) const
{
const LLWString &text = mEditor.getWText();
return mStyle->getFont()->charFromPixelOffset(text.c_str(), mStart + start_offset,
(F32)segment_local_x_coord,
F32_MAX,
num_chars,
round);
}
S32 LLNormalTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 line_offset, S32 max_chars) const
{
const LLWString &text = mEditor.getWText();
LLUIImagePtr image = mStyle->getImage();
if( image.notNull())
{
num_pixels = llmax(0, num_pixels - image->getWidth());
}
S32 last_char = mEnd;
// set max characters to length of segment, or to first newline
max_chars = llmin(max_chars, last_char - (mStart + segment_offset));
// if no character yet displayed on this line, don't require word wrapping since
// we can just move to the next line, otherwise insist on it so we make forward progress
LLFontGL::EWordWrapStyle word_wrap_style = (line_offset == 0)
? LLFontGL::WORD_BOUNDARY_IF_POSSIBLE
: LLFontGL::ONLY_WORD_BOUNDARIES;
S32 num_chars = mStyle->getFont()->maxDrawableChars(text.c_str() + segment_offset + mStart,
(F32)num_pixels,
max_chars,
word_wrap_style);
if (num_chars == 0
&& line_offset == 0
&& max_chars > 0)
{
// If at the beginning of a line, and a single character won't fit, draw it anyway
num_chars = 1;
}
// include *either* the EOF or newline character in this run of text
// but not both
S32 last_char_in_run = mStart + segment_offset + num_chars;
// check length first to avoid indexing off end of string
if (last_char_in_run < mEnd
&& (last_char_in_run >= mEditor.getLength() ))
{
num_chars++;
}
return num_chars;
}
void LLNormalTextSegment::dump() const
{
llinfos << "Segment [" <<
// mColor.mV[VX] << ", " <<
// mColor.mV[VY] << ", " <<
// mColor.mV[VZ] << "]\t[" <<
mStart << ", " <<
getEnd() << "]" <<
llendl;
}
//
// LLInlineViewSegment
//
LLInlineViewSegment::LLInlineViewSegment(const Params& p, S32 start, S32 end)
: LLTextSegment(start, end),
mView(p.view),
mForceNewLine(p.force_newline),
mLeftPad(p.left_pad),
mRightPad(p.right_pad),
mTopPad(p.top_pad),
mBottomPad(p.bottom_pad)
{
}
LLInlineViewSegment::~LLInlineViewSegment()
{
mView->die();
}
bool LLInlineViewSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
{
if (first_char == 0 && num_chars == 0)
{
// we didn't fit on a line, the widget will fall on the next line
// so dimensions here are 0
width = 0;
height = 0;
}
else
{
width = mLeftPad + mRightPad + mView->getRect().getWidth();
height = mBottomPad + mTopPad + mView->getRect().getHeight();
}
return false;
}
S32 LLInlineViewSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 line_offset, S32 max_chars) const
{
// if putting a widget anywhere but at the beginning of a line
// and the widget doesn't fit or mForceNewLine is true
// then return 0 chars for that line, and all characters for the next
if (line_offset != 0
&& (mForceNewLine || num_pixels < mView->getRect().getWidth()))
{
return 0;
}
else
{
return mEnd - mStart;
}
}
void LLInlineViewSegment::updateLayout(const LLTextBase& editor)
{
LLRect start_rect = editor.getDocRectFromDocIndex(mStart);
mView->setOrigin(start_rect.mLeft + mLeftPad, start_rect.mBottom + mBottomPad);
}
F32 LLInlineViewSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect)
{
// return padded width of widget
// widget is actually drawn during mDocumentView's draw()
return (F32)(draw_rect.mLeft + mView->getRect().getWidth() + mLeftPad + mRightPad);
}
void LLInlineViewSegment::unlinkFromDocument(LLTextBase* editor)
{
editor->removeDocumentChild(mView);
}
void LLInlineViewSegment::linkToDocument(LLTextBase* editor)
{
editor->addDocumentChild(mView);
}
LLLineBreakTextSegment::LLLineBreakTextSegment(S32 pos):LLTextSegment(pos,pos+1)
{
LLStyleSP s( new LLStyle(LLStyle::Params().visible(true)));
mFontHeight = llceil(s->getFont()->getLineHeight());
}
LLLineBreakTextSegment::LLLineBreakTextSegment(LLStyleConstSP style,S32 pos):LLTextSegment(pos,pos+1)
{
mFontHeight = llceil(style->getFont()->getLineHeight());
}
LLLineBreakTextSegment::~LLLineBreakTextSegment()
{
}
bool LLLineBreakTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
{
width = 0;
height = mFontHeight;
return true;
}
S32 LLLineBreakTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 line_offset, S32 max_chars) const
{
return 1;
}
F32 LLLineBreakTextSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect)
{
return draw_rect.mLeft;
}
LLImageTextSegment::LLImageTextSegment(LLStyleConstSP style,S32 pos,class LLTextBase& editor)
:LLTextSegment(pos,pos+1)
,mStyle( style )
,mEditor(editor)
{
}
LLImageTextSegment::~LLImageTextSegment()
{
}
static const S32 IMAGE_HPAD = 3;
bool LLImageTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const
{
width = 0;
height = llceil(mStyle->getFont()->getLineHeight());;
LLUIImagePtr image = mStyle->getImage();
if( num_chars>0 && image.notNull())
{
width += image->getWidth() + IMAGE_HPAD;
height = llmax(height, image->getHeight() + IMAGE_HPAD );
}
return false;
}
S32 LLImageTextSegment::getNumChars(S32 num_pixels, S32 segment_offset, S32 line_offset, S32 max_chars) const
{
LLUIImagePtr image = mStyle->getImage();
S32 image_width = image->getWidth();
if(line_offset == 0 || num_pixels>image_width + IMAGE_HPAD)
{
return 1;
}
return 0;
}
F32 LLImageTextSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect)
{
if ( (start >= 0) && (end <= mEnd - mStart))
{
LLColor4 color = LLColor4::white % mEditor.getDrawContext().mAlpha;
LLUIImagePtr image = mStyle->getImage();
S32 style_image_height = image->getHeight();
S32 style_image_width = image->getWidth();
// Text is drawn from the top of the draw_rect downward
S32 text_center = draw_rect.mTop - (draw_rect.getHeight() / 2);
// Align image to center of draw rect
S32 image_bottom = text_center - (style_image_height / 2);
image->draw(draw_rect.mLeft, image_bottom,
style_image_width, style_image_height, color);
const S32 IMAGE_HPAD = 3;
return draw_rect.mLeft + style_image_width + IMAGE_HPAD;
}
return 0.0;
}