/** * @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 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), 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 ), 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(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(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 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::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 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()) { //EXT-4288 //to keep consistance scrolling behaviour //when scrolling from top and from bottom... bool is_scrolled_to_end = (mScroller!=NULL) && scrolledToEnd(); LLUICtrl::reshape( width, height, called_from_parent ); if (is_scrolled_to_end) { deselect(); endOfDoc(); } // 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 + (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(); 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()); bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false; LLRect old_cursor_rect = getLocalRectFromDocIndex(mCursorPos); bool follow_selection = mVisibleTextRect.overlaps(old_cursor_rect); // cursor is visible old_cursor_rect.translate(-mVisibleTextRect.mLeft, -mVisibleTextRect.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); // subtract off effect of horizontal scrollbar from local position of first char first_char_rect.translate(-mVisibleTextRect.mLeft, -mVisibleTextRect.mBottom); 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; if (remaining_pixels < 0) { // getNumChars() and getDimensions() should return consistent results remaining_pixels = 0; } 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); mScroller->scrollToShowRect(new_cursor_rect_doc, old_cursor_rect); } else { // keep first line of text visible LLRect new_first_char_rect = getDocRectFromDocIndex(mScrollIndex); mScroller->scrollToShowRect(new_first_char_rect, 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 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(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(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); appendAndHighlightTextImpl(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()) { appendAndHighlightTextImpl(match.getLabel(), part, style_params); } else { appendAndHighlightTextImpl(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()) appendAndHighlightTextImpl(text, part, style_params); } else { appendAndHighlightTextImpl(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); 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); appendTextImpl(str,input_params); } appendLineBreakSegment(input_params); start = pos+1; pos = new_text.find("\n",start); } std::string str = std::string(new_text,start,new_text.length()-start); appendTextImpl(str,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) { 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); LLTextParser* highlight = LLTextParser::getInstance(); if (mParseHighlights && highlight) { LLStyle::Params highlight_params(style_params); LLSD pieces = highlight->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, bool prepend_newline, S32 highlight_part, const LLStyle::Params& style_params) { if (new_text.empty()) return; if(prepend_newline) appendLineBreakSegment(style_params); 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; 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 local_rect; if (mLineInfoList.empty()) { // return default height rect in upper left local_rect = mVisibleTextRect; 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(mVisibleTextRect.mLeft - scrolled_view_rect.mLeft, mVisibleTextRect.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(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( 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(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; }