diff options
Diffstat (limited to 'desktop-utilities/lumina-textedit/PlainTextEditor.cpp')
| -rw-r--r-- | desktop-utilities/lumina-textedit/PlainTextEditor.cpp | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/desktop-utilities/lumina-textedit/PlainTextEditor.cpp b/desktop-utilities/lumina-textedit/PlainTextEditor.cpp deleted file mode 100644 index 281c4bec..00000000 --- a/desktop-utilities/lumina-textedit/PlainTextEditor.cpp +++ /dev/null @@ -1,269 +0,0 @@ -//=========================================== -// Lumina-DE source code -// Copyright (c) 2015, Ken Moore -// Available under the 3-clause BSD license -// See the LICENSE file for full details -//=========================================== -#include "PlainTextEditor.h" - -#include <QColor> -#include <QPainter> -#include <QTextBlock> -#include <QFileDialog> -#include <QDebug> - -#include <LuminaUtils.h> - -//============== -// PUBLIC -//============== -PlainTextEditor::PlainTextEditor(QSettings *set, QWidget *parent) : QPlainTextEdit(parent){ - settings = set; - LNW = new LNWidget(this); - showLNW = true; - hasChanges = false; - lastSaveContents.clear(); - matchleft = matchright = -1; - this->setTabStopWidth( 8 * this->fontMetrics().width(" ") ); //8 character spaces per tab (UNIX standard) - //this->setObjectName("PlainTextEditor"); - //this->setStyleSheet("QPlainTextEdit#PlainTextEditor{ }"); - SYNTAX = new Custom_Syntax(settings, this->document()); - connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(LNW_updateWidth()) ); - connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(LNW_highlightLine()) ); - connect(this, SIGNAL(updateRequest(const QRect&, int)), this, SLOT(LNW_update(const QRect&, int)) ); - connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(checkMatchChar()) ); - connect(this, SIGNAL(textChanged()), this, SLOT(textChanged()) ); - LNW_updateWidth(); - LNW_highlightLine(); -} - -PlainTextEditor::~PlainTextEditor(){ - -} - -void PlainTextEditor::showLineNumbers(bool show){ - showLNW = show; - LNW->setVisible(show); - LNW_updateWidth(); -} - -void PlainTextEditor::LoadSyntaxRule(QString type){ - SYNTAX->loadRules(type); - SYNTAX->rehighlight(); -} - -void PlainTextEditor::updateSyntaxColors(){ - SYNTAX->reloadRules(); - SYNTAX->rehighlight(); -} - -//File loading/setting options -void PlainTextEditor::LoadFile(QString filepath){ - this->setWhatsThis(filepath); - this->clear(); - SYNTAX->loadRules( Custom_Syntax::ruleForFile(filepath.section("/",-1)) ); - lastSaveContents = LUtils::readFile(filepath).join("\n"); - this->setPlainText( lastSaveContents ); - hasChanges = false; - emit FileLoaded(this->whatsThis()); -} - -void PlainTextEditor::SaveFile(bool newname){ - //qDebug() << "Save File:" << this->whatsThis(); - if( !this->whatsThis().startsWith("/") || newname ){ - //prompt for a filename/path - QString file = QFileDialog::getSaveFileName(this, tr("Save File"), this->whatsThis(), tr("Text File (*)")); - if(file.isEmpty()){ return; } - this->setWhatsThis(file); - SYNTAX->loadRules( Custom_Syntax::ruleForFile(this->whatsThis().section("/",-1)) ); - SYNTAX->rehighlight(); - } - bool ok = LUtils::writeFile(this->whatsThis(), this->toPlainText().split("\n"), true); - hasChanges = !ok; - if(ok){ lastSaveContents = this->toPlainText(); emit FileLoaded(this->whatsThis()); } - //qDebug() << " - Success:" << ok << hasChanges; -} - -QString PlainTextEditor::currentFile(){ - return this->whatsThis(); -} - -bool PlainTextEditor::hasChange(){ - return hasChanges; -} - -//Functions for managing the line number widget -int PlainTextEditor::LNWWidth(){ - //Get the number of chars we need for line numbers - int lines = this->blockCount(); - if(lines<1){ lines = 1; } - int chars = 1; - while(lines>=10){ chars++; lines/=10; } - return (this->fontMetrics().width("9")*chars); //make sure to add a tiny bit of padding -} - -void PlainTextEditor::paintLNW(QPaintEvent *ev){ - QPainter P(LNW); - //First set the background color - P.fillRect(ev->rect(), QColor("lightgrey")); - //Now determine which line numbers to show (based on the current viewport) - QTextBlock block = this->firstVisibleBlock(); - int bTop = blockBoundingGeometry(block).translated(contentOffset()).top(); - int bBottom; - //Now loop over the blocks (lines) and write in the numbers - P.setPen(Qt::black); //setup the font color - while(block.isValid() && bTop<=ev->rect().bottom()){ //ensure block below top of viewport - bBottom = bTop+blockBoundingRect(block).height(); - if(block.isVisible() && bBottom >= ev->rect().top()){ //ensure block above bottom of viewport - P.drawText(0,bTop, LNW->width(), this->fontMetrics().height(), Qt::AlignRight, QString::number(block.blockNumber()+1) ); - } - //Go to the next block - block = block.next(); - bTop = bBottom; - } -} - -//============== -// PRIVATE -//============== -void PlainTextEditor::clearMatchData(){ - if(matchleft>=0 || matchright>=0){ - QList<QTextEdit::ExtraSelection> sel = this->extraSelections(); - for(int i=0; i<sel.length(); i++){ - if(sel[i].cursor.selectedText().length()==1){ sel.takeAt(i); i--; } - } - this->setExtraSelections(sel); - matchleft = -1; - matchright = -1; - } -} - -void PlainTextEditor::highlightMatch(QChar ch, bool forward, int fromPos, QChar startch){ - if(forward){ matchleft = fromPos; } - else{ matchright = fromPos; } - - int nested = 1; //always start within the first nest (the primary nest) - int tmpFromPos = fromPos; - QString doc = this->toPlainText(); - while( nested>0 && tmpFromPos<doc.length() && ( (tmpFromPos>=fromPos && forward) || ( tmpFromPos<=fromPos && !forward ) ) ){ - if(forward){ - QTextCursor cur = this->document()->find(ch, tmpFromPos); - if(!cur.isNull()){ - nested += doc.mid(tmpFromPos+1, cur.position()-tmpFromPos).count(startch) -1; - if(nested==0){ matchright = cur.position(); } - else{ tmpFromPos = cur.position(); } - }else{ break; } - }else{ - QTextCursor cur = this->document()->find(ch, tmpFromPos, QTextDocument::FindBackward); - if(!cur.isNull()){ - nested += doc.mid(cur.position(), tmpFromPos-cur.position()).count(startch) -1; - if(nested==0){ matchleft = cur.position(); } - else{ tmpFromPos = cur.position()-1; } - }else{ break; } - } - } - - //Now highlight the two characters - QList<QTextEdit::ExtraSelection> sels = this->extraSelections(); - if(matchleft>=0){ - QTextEdit::ExtraSelection sel; - if(matchright>=0){ sel.format.setBackground( QColor(settings->value("colors/bracket-found").toString()) ); } - else{ sel.format.setBackground( QColor(settings->value("colors/bracket-missing").toString()) ); } - QTextCursor cur = this->textCursor(); - cur.setPosition(matchleft); - if(forward){ cur.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor); } - else{ cur.movePosition(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor); } - sel.cursor = cur; - sels << sel; - } - if(matchright>=0){ - QTextEdit::ExtraSelection sel; - if(matchleft>=0){ sel.format.setBackground( QColor(settings->value("colors/bracket-found").toString()) ); } - else{ sel.format.setBackground( QColor(settings->value("colors/bracket-missing").toString()) ); } - QTextCursor cur = this->textCursor(); - cur.setPosition(matchright); - if(!forward){ cur.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor); } - else{ cur.movePosition(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor); } - sel.cursor = cur; - sels << sel; - } - this->setExtraSelections(sels); -} - -//=================== -// PRIVATE SLOTS -//=================== -//Functions for managing the line number widget -void PlainTextEditor::LNW_updateWidth(){ - if(showLNW){ - this->setViewportMargins( LNWWidth(), 0, 0, 0); //the LNW is contained within the left margin - }else{ - this->setViewportMargins( 0, 0, 0, 0); //the LNW is contained within the left margin - } -} - -void PlainTextEditor::LNW_highlightLine(){ - if(this->isReadOnly()){ return; } - QColor highC = QColor(0,0,0,50); //just darken the line a bit - QTextEdit::ExtraSelection sel; - sel.format.setBackground(highC); - sel.format.setProperty(QTextFormat::FullWidthSelection, true); - sel.cursor = this->textCursor(); - sel.cursor.clearSelection(); //just in case it already has one - setExtraSelections( QList<QTextEdit::ExtraSelection>() << sel ); -} - -void PlainTextEditor::LNW_update(const QRect &rect, int dy){ - if(dy!=0){ LNW->scroll(0,dy); } //make sure to scroll the line widget the same amount as the editor - else{ - //Some other reason we need to repaint the widget - LNW->update(0,rect.y(), LNW->width(), rect.height()); //also repaint the LNW in the same area - } - if(rect.contains(this->viewport()->rect())){ - //Something in the currently-viewed area needs updating - make sure the LNW width is still correct - LNW_updateWidth(); - } -} - -//Function for running the matching routine -void PlainTextEditor::checkMatchChar(){ - clearMatchData(); - int pos = this->textCursor().position(); - QChar ch = this->document()->characterAt(pos); - bool tryback = true; - while(tryback){ - tryback = false; - if(ch==QChar('(')){ highlightMatch(QChar(')'),true, pos, QChar('(') ); } - else if(ch==QChar(')')){ highlightMatch(QChar('('),false, pos, QChar(')') ); } - else if(ch==QChar('{')){ highlightMatch(QChar('}'),true, pos, QChar('{') ); } - else if(ch==QChar('}')){ highlightMatch(QChar('{'),false, pos, QChar('}') ); } - else if(ch==QChar('[')){ highlightMatch(QChar(']'),true, pos, QChar('[') ); } - else if(ch==QChar(']')){ highlightMatch(QChar('['),false, pos, QChar(']') ); } - else if(pos==this->textCursor().position()){ - //Try this one more time - using the previous character instead of the current character - tryback = true; - pos--; - ch = this->document()->characterAt(pos); - } - } //end check for next/previous char -} - -//Functions for notifying the parent widget of changes -void PlainTextEditor::textChanged(){ - //qDebug() << " - Got Text Changed signal"; - bool changed = (lastSaveContents != this->toPlainText()); - if(changed == hasChanges){ return; } //no change - hasChanges = changed; //save for reading later - if(hasChanges){ emit UnsavedChanges( this->whatsThis() ); } - else{ emit FileLoaded(this->whatsThis()); } -} - -//================== -// PROTECTED -//================== -void PlainTextEditor::resizeEvent(QResizeEvent *ev){ - QPlainTextEdit::resizeEvent(ev); //do the normal resize processing - //Now re-adjust the placement of the LNW (within the left margin area) - QRect cGeom = this->contentsRect(); - LNW->setGeometry( QRect(cGeom.left(), cGeom.top(), LNWWidth(), cGeom.height()) ); -} |