/** * @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 { 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), 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), mReflowNeeded(FALSE), 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), 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(); updateTextRect(); } LLTextBase::~LLTextBase() { delete mPopupMenu; clearSegments(); } 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::getDefaultStyle() { LLColor4 text_color = ( mReadOnly ? mReadOnlyFgColor.get() : mFgColor.get() ); return LLStyle::Params().color(text_color).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()) { LLWString text = getWText(); std::vector selection_rects; S32 selection_left = llmin( mSelectionStart, mSelectionEnd ); S32 selection_right = llmax( mSelectionStart, mSelectionEnd ); LLRect selection_rect = mTextRect; // 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); S32 segment_width, segment_height; // 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 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 ? mReadOnlyBgColor.get() : mWriteableBgColor.get(); F32 alpha = hasFocus() ? 0.7f : 0.3f; alpha *= getDrawContext().mAlpha; gGL.color4f( 1.f - color.mV[0], 1.f - color.mV[1], 1.f - color.mV[2], 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(mTextRect.mLeft - content_display_rect.mLeft, mTextRect.mBottom - content_display_rect.mBottom); gl_rect_2d(selection_rect); } } } void LLTextBase::drawCursor() { F32 alpha = getDrawContext().mAlpha; if( hasFocus() && gFocusMgr.getAppHasFocus() && !mReadOnly) { 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; } if (!mTextRect.contains(cursor_rect)) 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, segment_height; 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() { LLWString text = getWText(); 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(); 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++) { line_info& line = mLineInfoList[cur_line]; if ((line.mRect.mTop - scrolled_view_rect.mBottom) < mTextRect.mBottom) { break; } S32 next_start = -1; S32 line_end = text_len; if ((cur_line + 1) < getLineCount()) { next_start = getLineStart(cur_line + 1); line_end = next_start; } if ( text[line_end-1] == '\n' ) { --line_end; } LLRect text_rect(line.mRect.mLeft + mTextRect.mLeft - scrolled_view_rect.mLeft, line.mRect.mTop - scrolled_view_rect.mBottom + mTextRect.mBottom, mDocumentView->getRect().getWidth() - scrolled_view_rect.mLeft, line.mRect.mBottom - scrolled_view_rect.mBottom + mTextRect.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(); 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 default_segment = new LLNormalTextSegment( new LLStyle(getDefaultStyle()), 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() ) { // The user's not getting everything he's hoping for make_ui_sound("UISndBadKeystroke"); insert_len = getLength() - old_len; } onValueChange(pos, pos + insert_len); needsReflow(); 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(); 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(); return 1; } void LLTextBase::createDefaultSegment() { // ensures that there is always at least one segment if (mSegments.empty()) { LLTextSegmentPtr default_segment = new LLNormalTextSegment( new LLStyle(getDefaultStyle()), 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()); if (cur_seg_iter == mSegments.end()) { mSegments.insert(segment_to_insert); segment_to_insert->linkToDocument(this); } else { LLTextSegmentPtr cur_segmentp = *cur_seg_iter; 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 LLTextSegmentPtr remainder_segment = new LLNormalTextSegment( cur_segmentp->getStyle(), 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(); } 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) { LLUICtrl::reshape( width, height, called_from_parent ); // do this first after reshape, because other things depend on // up-to-date mTextRect updateTextRect(); needsReflow(); } void LLTextBase::draw() { // reflow if needed, on demand reflow(); // then update scroll position, as cursor may have moved updateScrollFromCursor(); if (mBGVisible) { // clip background rect against extents, if we support scrolling LLLocalClipRect clip(getLocalRect(), mScroller != NULL); LLColor4 bg_color = mReadOnly ? mReadOnlyBgColor.get() : hasFocus() ? mFocusBgColor.get() : mWriteableBgColor.get(); gl_rect_2d(mDocumentView->getRect(), bg_color, TRUE); } // draw document view LLUICtrl::draw(); { // only clip if we support scrolling (mScroller != NULL) LLLocalClipRect clip(mTextRect, mScroller != NULL); drawSelectionBackground(); drawText(); drawCursor(); } } //virtual void LLTextBase::setColor( const LLColor4& c ) { mFgColor = c; } //virtual void LLTextBase::setValue(const LLSD& value ) { setText(value.asString()); } //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 0; case LLFontGL::HCENTER: return (mTextRect.getWidth() - width) / 2; case LLFontGL::RIGHT: return mTextRect.getWidth() - width; default: return 0; } } static LLFastTimer::DeclareTimer FTM_TEXT_REFLOW ("Text Reflow"); void LLTextBase::reflow(S32 start_index) { if (!mReflowNeeded) return; LLFastTimer ft(FTM_TEXT_REFLOW); updateSegments(); while(mReflowNeeded) { mReflowNeeded = FALSE; bool scrolled_to_bottom = mScroller ? mScroller->isAtBottom() : false; LLRect old_cursor_rect = getLocalRectFromDocIndex(mCursorPos); bool follow_selection = mTextRect.overlaps(old_cursor_rect); // cursor is visible 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); S32 cur_top = 0; segment_set_t::iterator seg_iter = mSegments.begin(); S32 seg_offset = 0; S32 line_start_index = 0; const S32 text_width = mTextRect.getWidth(); // optionally reserve room for margin S32 remaining_pixels = text_width; LLWString text(getWText()); 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; 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; 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_left = getLeftOffset(text_width - remaining_pixels); LLRect line_rect(text_left, cur_top, text_left + (text_width - remaining_pixels), 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_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 ++seg_iter; seg_offset = 0; } } if (mLineInfoList.empty()) { mContentsRect = LLRect(0, mVPad, mHPad, 0); } else { mContentsRect = mLineInfoList.begin()->mRect; for (line_list_t::const_iterator line_iter = ++mLineInfoList.begin(); line_iter != mLineInfoList.end(); ++line_iter) { mContentsRect.unionWith(line_iter->mRect); } mContentsRect.mRight += mHPad; mContentsRect.mTop += mVPad; // get around rounding errors when clipping text against rectangle mContentsRect.stretch(1); } // change mDocumentView size to accomodate reflowed text LLRect document_rect; if (mScroller) { // document is size of scroller or size of text contents, whichever is larger document_rect.setOriginAndSize(0, 0, mScroller->getContentWindowRect().getWidth(), llmax(mScroller->getContentWindowRect().getHeight(), mContentsRect.getHeight())); } else { // document size is just extents of reflowed text, reset to origin 0,0 document_rect.set(0, getLocalRect().getHeight(), getLocalRect().getWidth(), llmin(0, getLocalRect().getHeight() - mContentsRect.getHeight())); } mDocumentView->setShape(document_rect); // after making document big enough to hold all the text, move the text to fit in the document if (!mLineInfoList.empty()) { S32 delta_pos = mDocumentView->getRect().getHeight() - mLineInfoList.begin()->mRect.mTop - mVPad; // 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); } mContentsRect.translate(0, delta_pos); } // calculate visible region for diplaying text updateTextRect(); 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) { LLRect visible_content_rect = getVisibleDocumentRect(); 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 = getLocalRectFromDocIndex(mCursorPos); new_cursor_rect_doc.translate(visible_content_rect.mLeft, visible_content_rect.mBottom); mScroller->scrollToShowRect(new_cursor_rect_doc, old_cursor_rect); //llassert_always(getLocalRectFromDocIndex(mCursorPos).mBottom == old_cursor_rect.mBottom); } else { // keep first line of text visible LLRect new_first_char_rect = getLocalRectFromDocIndex(mScrollIndex); new_first_char_rect.translate(visible_content_rect.mLeft, visible_content_rect.mBottom); mScroller->scrollToShowRect(new_first_char_rect, first_char_rect); //llassert_always(getLocalRectFromDocIndex(mScrollIndex).mBottom == first_char_rect.mBottom); } } } // reset desired x cursor position updateCursorXPos(); } LLRect LLTextBase::getContentsRect() { reflow(); return mContentsRect; } 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) { // binary search for line that starts before top of visible buffer and starts before end of visible buffer 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 { // binary search for line that starts before top of visible buffer and starts before end of visible buffer 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 ) { // Find the cursor position at the requested local screen position S32 offset = getDocIndexFromLocalCoord( x, y, FALSE ); 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.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) { // clear out the existing text and segments getViewModel()->setDisplay(LLWStringUtil::null); clearSegments(); // createDefaultSegment(); startOfDoc(); deselect(); // append the new text (supports Url linking) std::string text(utf8str); LLStringUtil::removeCRLF(text); appendText(text, false); //resetDirty(); onValueChange(0, getLength()); needsReflow(); } //virtual std::string LLTextBase::getText() const { return getViewModel()->getValue().asString(); } void LLTextBase::appendText(const std::string &new_text, bool prepend_newline, const LLStyle::Params& input_params) { LLStyle::Params style_params(input_params); style_params.fillFrom(getDefaultStyle()); if (!style_params.font.isProvided()) { style_params.font = mDefaultFont; } if (!style_params.drop_shadow.isProvided()) { style_params.drop_shadow = mFontShadow; } 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(); // apply font name from requested style_params std::string font_name = LLFontGL::nameFromFont(style_params.font()); link_params.font.name.setIfNotProvided(font_name); 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, prepend_newline, part, style_params); prepend_newline = false; } // 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; // HACK: fix spacing of images and remove the fixed char spacing appendAndHighlightText(" ", prepend_newline, part, icon); prepend_newline = false; } } // output the styled Url appendAndHighlightText(match.getLabel(), prepend_newline, part, link_params); prepend_newline = false; // 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, prepend_newline, part, style_params); } else { appendAndHighlightText(new_text, prepend_newline, part, style_params); } } void LLTextBase::appendAndHighlightText(const std::string &new_text, bool prepend_newline, S32 highlight_part, const LLStyle::Params& stylep) { if (new_text.empty()) return; // 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 = stylep; 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; if (prepend_newline && (i == 0 || pieces.size() <= 1 )) { wide_text = utf8str_to_wstring(std::string("\n") + pieces[i]["text"].asString()); } else { wide_text = utf8str_to_wstring(pieces[i]["text"].asString()); } S32 cur_length = getLength(); LLTextSegmentPtr segmentp = new LLNormalTextSegment(new LLStyle(highlight_params), 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; // Add carriage return if not first line if (getLength() != 0 && prepend_newline) { wide_text = utf8str_to_wstring(std::string("\n") + new_text); } else { wide_text = utf8str_to_wstring(new_text); } segment_vec_t segments; S32 segment_start = old_length; S32 segment_end = old_length + wide_text.size(); segments.push_back(new LLNormalTextSegment(new LLStyle(stylep), segment_start, segment_end, *this )); insertStringNoUndo(getLength(), wide_text, &segments); } needsReflow(); // 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); } //if( !allow_undo ) //{ // blockUndo(); //} } 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; const LLStyleSP 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)); } 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 ) 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 - mTextRect.mBottom + visible_region.mBottom, compare_bottom()); if (line_iter == mLineInfoList.end()) { return getLength(); // past the end } S32 pos = getLength(); S32 start_x = mTextRect.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 - 1) - segment_line_start; S32 text_width, text_height; segmentp->getDimensions(line_seg_offset, segment_line_length, text_width, text_height); if (local_x < start_x + text_width // cursor to left of right edge of text || segmentp->getEnd() >= line_iter->mDocIndexEnd - 1) // or this segment wraps to next line { // 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; } start_x += text_width; } return pos; } LLRect LLTextBase::getLocalRectFromDocIndex(S32 pos) const { LLRect local_rect; if (mLineInfoList.empty()) { local_rect = mTextRect; local_rect.mBottom = local_rect.mTop - (S32)(mDefaultFont->getLineHeight()); return local_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()); LLRect scrolled_view_rect = getVisibleDocumentRect(); local_rect.mLeft = mTextRect.mLeft - scrolled_view_rect.mLeft + line_iter->mRect.mLeft; local_rect.mBottom = mTextRect.mBottom + (line_iter->mRect.mBottom - scrolled_view_rect.mBottom); local_rect.mTop = mTextRect.mBottom + (line_iter->mRect.mTop - scrolled_view_rect.mBottom); 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); local_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); local_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; } } local_rect.mRight = local_rect.mLeft; 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); } void LLTextBase::endOfDoc() { setCursorPos(getLength()); } 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 + mTextRect.mBottom - visible_region.mBottom, TRUE); setCursorPos(new_cursor_pos, true); } 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::updateTextRect() { LLRect old_text_rect = mTextRect; mTextRect = mScroller ? mScroller->getContentWindowRect() : getLocalRect(); //FIXME: replace border with image? if (mBorderVisible) { mTextRect.stretch(-1); } mTextRect.mLeft += mHPad; mTextRect.mTop -= mVPad; if (mTextRect != old_text_rect) { needsReflow(); } } 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 when not scrolling LLRect doc_rect = mDocumentView->getLocalRect(); doc_rect.translate(-mDocumentView->getRect().mLeft, -mDocumentView->getRect().mBottom); return doc_rect; } } // // LLTextSegment // LLTextSegment::~LLTextSegment() {} void LLTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const { width = 0; height = 0; } 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) {} const LLStyleSP LLTextSegment::getStyle() const {static LLStyleSP sp(new LLStyle()); return sp; } void LLTextSegment::setStyle(const LLStyleSP &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( const LLStyleSP& style, S32 start, S32 end, LLTextBase& editor ) : LLTextSegment(start, end), mStyle( style ), mToken(NULL), mEditor(editor) { mFontHeight = llceil(mStyle->getFont()->getLineHeight()); } 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()); } F32 LLNormalTextSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect) { if( end - start > 0 ) { if ( mStyle->isImage() && (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(); // Center the image vertically S32 image_bottom = draw_rect.getCenterY() - (style_image_height/2); image->draw(draw_rect.mLeft, image_bottom, style_image_width, style_image_height); } 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 = mStyle->getColor() % alpha; font = mStyle->getFont(); 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, 0, 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, 0, LLFontGL::NO_SHADOW, length, rect.mRight, &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, 0, mStyle->getShadowType(), length, rect.mRight, &right_x, mEditor.getUseEllipses()); } return right_x; } BOOL LLNormalTextSegment::handleHover(S32 x, S32 y, MASK mask) { if (getStyle() && getStyle()->isLink()) { LLUI::getWindow()->setCursor(UI_CURSOR_HAND); return TRUE; } return FALSE; } BOOL LLNormalTextSegment::handleRightMouseDown(S32 x, S32 y, MASK mask) { if (getStyle() && getStyle()->isLink()) { mEditor.createUrlContextMenu(x, y, getStyle()->getLinkHREF()); return TRUE; } return FALSE; } BOOL LLNormalTextSegment::handleMouseDown(S32 x, S32 y, MASK mask) { if (getStyle() && getStyle()->isLink()) { // 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()) { 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; } void LLNormalTextSegment::getDimensions(S32 first_char, S32 num_chars, S32& width, S32& height) const { LLWString text = mEditor.getWText(); // look for any printable character, then return the font height height = 0; for (S32 index = mStart + first_char; index < mStart + first_char + num_chars; ++index) { if (text[index] != '\n') { height = mFontHeight; break; } } width = mStyle->getFont()->getWidth(text.c_str(), mStart + first_char, num_chars); } S32 LLNormalTextSegment::getOffset(S32 segment_local_x_coord, S32 start_offset, S32 num_chars, bool round) 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 { LLWString text = mEditor.getWText(); // search for newline and if found, truncate there S32 last_char = mStart + segment_offset; for (; last_char != mEnd; ++last_char) { if (text[last_char] == '\n') break; } // set max characters to length of segment, or to first newline max_chars = llmin(max_chars, last_char - (mStart + segment_offset)); S32 num_chars = mStyle->getFont()->maxDrawableChars(text.c_str() + segment_offset + mStart, (F32)num_pixels, max_chars, TRUE); 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; } if (mStart + segment_offset + num_chars == mEditor.getLength()) { // include terminating NULL num_chars++; } else if (text[mStart + segment_offset + num_chars] == '\n') { 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(LLView* view, S32 start, S32 end, bool force_new_line) : LLTextSegment(start, end), mView(view), mForceNewLine(force_new_line) { } LLInlineViewSegment::~LLInlineViewSegment() { mView->die(); } void 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 = mView->getRect().getWidth(); height = mView->getRect().getHeight(); } } 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.getLocalRectFromDocIndex(mStart); LLRect doc_rect = editor.getDocumentView()->getRect(); mView->setOrigin(doc_rect.mLeft + start_rect.mLeft, doc_rect.mBottom + start_rect.mBottom); } F32 LLInlineViewSegment::draw(S32 start, S32 end, S32 selection_start, S32 selection_end, const LLRect& draw_rect) { return (F32)(draw_rect.mLeft + mView->getRect().getWidth()); } void LLInlineViewSegment::unlinkFromDocument(LLTextBase* editor) { editor->removeDocumentChild(mView); } void LLInlineViewSegment::linkToDocument(LLTextBase* editor) { editor->addDocumentChild(mView); }