mirror of
https://github.com/python-LimeReport/LimeReport.git
synced 2024-12-25 13:04:38 +03:00
194 lines
5.8 KiB
C++
194 lines
5.8 KiB
C++
#include "lrcodeeditor.h"
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#include <QAbstractItemView>
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#include <QWidget>
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#include <QCompleter>
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#include <QKeyEvent>
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#include <QScrollBar>
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#include <QPainter>
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#include <QTextBlock>
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#include <QDebug>
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#include "lrscripthighlighter.h"
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namespace LimeReport{
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CodeEditor::CodeEditor(QWidget *parent)
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: QPlainTextEdit(parent), m_compleater(0)
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{
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lineNumberArea = new LineNumberArea(this);
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connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateLineNumberAreaWidth(int)));
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connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(updateLineNumberArea(QRect,int)));
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connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(highlightCurrentLine()));
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updateLineNumberAreaWidth(0);
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highlightCurrentLine();
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(void) new ScriptHighlighter(document());
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}
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void CodeEditor::setCompleter(QCompleter *value)
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{
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if (value) disconnect(value,0,this,0);
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m_compleater = value;
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if (!m_compleater) return;
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m_compleater->setWidget(this);
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m_compleater->setCompletionMode(QCompleter::PopupCompletion);
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m_compleater->setCaseSensitivity(Qt::CaseInsensitive);
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connect(m_compleater,SIGNAL(activated(QString)),this,SLOT(insertCompletion(QString)));
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}
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void CodeEditor::lineNumberAreaPaintEvent(QPaintEvent* event)
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{
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QPainter painter(lineNumberArea);
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painter.fillRect(event->rect(), QPalette().background().color());
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QTextBlock block = firstVisibleBlock();
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int blockNumber = block.blockNumber();
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int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top();
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int bottom = top + (int) blockBoundingRect(block).height();
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while (block.isValid() && top <= event->rect().bottom()) {
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if (block.isVisible() && bottom >= event->rect().top()) {
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QString number = QString::number(blockNumber + 1);
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painter.setPen(QPalette().text().color());
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painter.drawText(0, top, lineNumberArea->width(), fontMetrics().height(),
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Qt::AlignCenter, number);
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}
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block = block.next();
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top = bottom;
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bottom = top + (int) blockBoundingRect(block).height();
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++blockNumber;
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}
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}
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int CodeEditor::lineNumberAreaWidth()
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{
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int digits = 1;
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int max = qMax(1, blockCount());
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while (max >= 10) {
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max /= 10;
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++digits;
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}
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int space = fontMetrics().width(QLatin1Char('9'))*2 + fontMetrics().width(QLatin1Char('9')) * digits;
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return space;
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}
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void CodeEditor::keyPressEvent(QKeyEvent *e)
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{
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if (m_compleater && m_compleater->popup()->isVisible()) {
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switch (e->key()) {
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case Qt::Key_Enter:
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case Qt::Key_Return:
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case Qt::Key_Escape:
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case Qt::Key_Tab:
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case Qt::Key_Backtab:
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e->ignore();
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return;
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default:
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break;
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}
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}
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bool isShortcut = ((e->modifiers() & Qt::ControlModifier) && e->key() == Qt::Key_Space);
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if (!m_compleater || !isShortcut) QPlainTextEdit::keyPressEvent(e);
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const bool ctrlOrShift = e->modifiers() & (Qt::ControlModifier | Qt::ShiftModifier);
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if (!m_compleater || (ctrlOrShift && e->text().isEmpty()))
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return;
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static QString eow("~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-="); // end of word
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bool hasModifier = (e->modifiers() != Qt::NoModifier) && !ctrlOrShift;
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QString completionPrefix = textUnderCursor();
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if (!isShortcut && (hasModifier || e->text().isEmpty()|| completionPrefix.length() < 3
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|| eow.contains(e->text().right(1)))) {
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m_compleater->popup()->hide();
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return;
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}
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if (completionPrefix != m_compleater->completionPrefix()) {
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m_compleater->setCompletionPrefix(completionPrefix);
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m_compleater->popup()->setCurrentIndex(m_compleater->completionModel()->index(0, 0));
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}
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QRect cr = cursorRect();
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cr.setWidth(m_compleater->popup()->sizeHintForColumn(0)
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+ m_compleater->popup()->verticalScrollBar()->sizeHint().width());
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m_compleater->complete(cr);
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}
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void CodeEditor::focusInEvent(QFocusEvent *e)
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{
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if (m_compleater) m_compleater->setWidget(this);
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QPlainTextEdit::focusInEvent(e);
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}
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void CodeEditor::resizeEvent(QResizeEvent* event)
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{
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QPlainTextEdit::resizeEvent(event);
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QRect cr = contentsRect();
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lineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height()));
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}
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QString CodeEditor::textUnderCursor() const
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{
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QTextCursor tc = textCursor();
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tc.select(QTextCursor::WordUnderCursor);
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return tc.selectedText();
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}
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void CodeEditor::insertCompletion(const QString &completion)
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{
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if (m_compleater->widget() != this)
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return;
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QTextCursor tc = textCursor();
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int extra = completion.length() - m_compleater->completionPrefix().length();
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tc.movePosition(QTextCursor::Left);
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tc.movePosition(QTextCursor::EndOfWord);
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tc.insertText(completion.right(extra));
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setTextCursor(tc);
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}
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void CodeEditor::updateLineNumberAreaWidth(int newBlockCount)
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{
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setViewportMargins(lineNumberAreaWidth(), 0, 0, 0);
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}
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void CodeEditor::highlightCurrentLine()
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{
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QList<QTextEdit::ExtraSelection> extraSelections;
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if (!isReadOnly()) {
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QTextEdit::ExtraSelection selection;
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QColor lineColor = QColor(QPalette().background().color()).darker(160);
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selection.format.setBackground(lineColor);
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selection.format.setProperty(QTextFormat::FullWidthSelection, true);
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selection.cursor = textCursor();
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selection.cursor.clearSelection();
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extraSelections.append(selection);
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}
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setExtraSelections(extraSelections);
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}
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void CodeEditor::updateLineNumberArea(const QRect& rect, int dy)
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{
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if (dy)
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lineNumberArea->scroll(0, dy);
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else
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lineNumberArea->update(0, rect.y(), lineNumberArea->width(), rect.height());
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if (rect.contains(viewport()->rect()))
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updateLineNumberAreaWidth(0);
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}
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} //namespace LimeReport
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