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Implement expanding / shrinking skipped lines

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Change-Id: I6921b7a39288f6a9747574b1a8e75d571f4723ce
Reviewed-by: hjk <hjk121@nokiamail.com>
This commit is contained in:
jkobus
2013-04-10 13:51:04 +02:00
committed by hjk
parent 0cbcd365e5
commit 186c457d6c
4 changed files with 166 additions and 25 deletions
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132
src/plugins/diffeditor/diffeditorwidget.cpp
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@@ -88,6 +88,7 @@ public:
void clearLineNumbers();
void clearSkippedLines() { m_skippedLines.clear(); }
void clearSeparators() { m_separators.clear(); }
QTextBlock firstVisibleBlock() const { return SnippetEditorWidget::firstVisibleBlock(); }
protected:
virtual int extraAreaWidth(int *markWidthPtr = 0) const { return BaseTextEditorWidget::extraAreaWidth(markWidthPtr); }
@@ -95,6 +96,7 @@ protected:
virtual QString lineNumber(int blockNumber) const;
virtual int lineNumberDigits() const;
virtual bool selectionVisible(int blockNumber) const;
virtual bool replacementVisible(int blockNumber) const;
virtual void paintEvent(QPaintEvent *e);
virtual void scrollContentsBy(int dx, int dy);
@@ -103,7 +105,7 @@ private:
int m_lineNumberDigits;
// block number, skipped lines
QMap<int, int> m_skippedLines;
// block number, separator
// block number, separator. Separator used as lines alignment and inside skipped lines
QMap<int, bool> m_separators;
};
@@ -111,6 +113,7 @@ DiffViewEditorWidget::DiffViewEditorWidget(QWidget *parent)
: SnippetEditorWidget(parent), m_lineNumberDigits(1)
{
setLineNumbersVisible(true);
setCodeFoldingSupported(true);
setFrameStyle(QFrame::NoFrame);
}
@@ -129,6 +132,11 @@ bool DiffViewEditorWidget::selectionVisible(int blockNumber) const
return !m_separators.value(blockNumber, false);
}
bool DiffViewEditorWidget::replacementVisible(int blockNumber) const
{
return m_skippedLines.value(blockNumber);
}
void DiffViewEditorWidget::setLineNumber(int blockNumber, const QString &lineNumber)
{
m_lineNumbers.insert(blockNumber, lineNumber);
@@ -196,7 +204,8 @@ void DiffViewEditorWidget::paintEvent(QPaintEvent *e)
DiffEditorWidget::DiffEditorWidget(QWidget *parent)
: QWidget(parent),
m_contextLinesNumber(1),
m_ignoreWhitespaces(true)
m_ignoreWhitespaces(true),
m_foldingBlocker(false)
{
TextEditor::TextEditorSettings *settings = TextEditorSettings::instance();
@@ -219,12 +228,16 @@ DiffEditorWidget::DiffEditorWidget(QWidget *parent)
this, SLOT(leftSliderChanged()));
connect(m_leftEditor, SIGNAL(cursorPositionChanged()),
this, SLOT(leftSliderChanged()));
connect(m_leftEditor->document()->documentLayout(), SIGNAL(documentSizeChanged(QSizeF)),
this, SLOT(leftDocumentSizeChanged()));
connect(m_rightEditor->verticalScrollBar(), SIGNAL(valueChanged(int)),
this, SLOT(rightSliderChanged()));
connect(m_rightEditor->verticalScrollBar(), SIGNAL(actionTriggered(int)),
this, SLOT(rightSliderChanged()));
connect(m_rightEditor, SIGNAL(cursorPositionChanged()),
this, SLOT(rightSliderChanged()));
connect(m_rightEditor->document()->documentLayout(), SIGNAL(documentSizeChanged(QSizeF)),
this, SLOT(rightDocumentSizeChanged()));
m_splitter = new QSplitter(this);
m_splitter->addWidget(m_leftEditor);
@@ -586,7 +599,7 @@ FileData DiffEditorWidget::calculateContextData(const ChunkData &originalData) c
if (m_contextLinesNumber < 0)
return FileData(originalData);
const int joinChunkThreshold = 0;
const int joinChunkThreshold = 1;
FileData fileData;
QMap<int, bool> hiddenRows;
@@ -760,19 +773,30 @@ void DiffEditorWidget::showDiff()
blockNumber++;
QTextBlock leftBlock = m_leftEditor->document()->findBlockByNumber(blockNumber);
for (int j = 0; j < chunkData.rows.count(); j++) {
leftBlock.setVisible(false);
leftBlock.setLineCount(0);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(leftBlock, 1);
leftBlock = leftBlock.next();
}
QTextBlock rightBlock = m_rightEditor->document()->findBlockByNumber(blockNumber);
for (int j = 0; j < chunkData.rows.count(); j++) {
rightBlock.setVisible(false);
rightBlock.setLineCount(0);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(rightBlock, 1);
rightBlock = rightBlock.next();
}
}
blockNumber += chunkData.rows.count();
}
blockNumber = 0;
for (int i = 0; i < m_contextFileData.chunks.count(); i++) {
ChunkData chunkData = m_contextFileData.chunks.at(i);
if (!chunkData.alwaysShown) {
QTextBlock leftBlock = m_leftEditor->document()->findBlockByNumber(blockNumber);
TextEditor::BaseTextDocumentLayout::doFoldOrUnfold(leftBlock, false);
QTextBlock rightBlock = m_rightEditor->document()->findBlockByNumber(blockNumber);
TextEditor::BaseTextDocumentLayout::doFoldOrUnfold(rightBlock, false);
blockNumber++;
}
blockNumber += chunkData.rows.count();
}
m_foldingBlocker = true;
BaseTextDocumentLayout *leftLayout = qobject_cast<BaseTextDocumentLayout *>(m_leftEditor->document()->documentLayout());
if (leftLayout) {
leftLayout->requestUpdate();
@@ -783,6 +807,7 @@ void DiffEditorWidget::showDiff()
rightLayout->requestUpdate();
rightLayout->emitDocumentSizeChanged();
}
m_foldingBlocker = false;
// int ela5 = time.elapsed();
@@ -959,6 +984,99 @@ void DiffEditorWidget::rightSliderChanged()
m_leftEditor->verticalScrollBar()->setValue(m_rightEditor->verticalScrollBar()->value());
}
void DiffEditorWidget::leftDocumentSizeChanged()
{
synchronizeFoldings(m_leftEditor, m_rightEditor);
}
void DiffEditorWidget::rightDocumentSizeChanged()
{
synchronizeFoldings(m_rightEditor, m_leftEditor);
}
void DiffEditorWidget::synchronizeFoldings(DiffViewEditorWidget *source, DiffViewEditorWidget *destination)
{
if (m_foldingBlocker)
return;
m_foldingBlocker = true;
QTextBlock sourceBlock = source->document()->firstBlock();
QTextBlock destinationBlock = destination->document()->firstBlock();
while (sourceBlock.isValid() && destinationBlock.isValid()) {
if (TextEditor::BaseTextDocumentLayout::canFold(sourceBlock)) {
const bool isSourceFolded = TextEditor::BaseTextDocumentLayout::isFolded(sourceBlock);
const bool isDestinationFolded = TextEditor::BaseTextDocumentLayout::isFolded(destinationBlock);
if (isSourceFolded != isDestinationFolded) {
if (isSourceFolded) { // we fold the destination
QTextBlock previousSource = sourceBlock.previous(); // skippedLines
QTextBlock previousDestination = destinationBlock.previous(); // skippedLines
QTextBlock firstVisibleDestinationBlock = destination->firstVisibleBlock();
QTextBlock firstDestinationBlock = destination->document()->firstBlock();
TextEditor::BaseTextDocumentLayout::doFoldOrUnfold(destinationBlock, !isSourceFolded);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(sourceBlock, 1);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(destinationBlock, 1);
previousSource.setVisible(true);
previousSource.setLineCount(1);
previousDestination.setVisible(true);
previousDestination.setLineCount(1);
sourceBlock.setVisible(false);
sourceBlock.setLineCount(0);
destinationBlock.setVisible(false);
destinationBlock.setLineCount(0);
TextEditor::BaseTextDocumentLayout::setFolded(previousSource, true);
TextEditor::BaseTextDocumentLayout::setFolded(previousDestination, true);
if (firstVisibleDestinationBlock == destinationBlock) {
/*
The following hack is completely crazy. That's the only way to scroll 1 line up
in case destinationBlock was the top visible block.
There is no need to scroll the source since this is in sync anyway
(leftSliderChanged(), rightSliderChanged())
*/
destination->verticalScrollBar()->setValue(destination->verticalScrollBar()->value() - 1);
destination->verticalScrollBar()->setValue(destination->verticalScrollBar()->value() + 1);
if (firstVisibleDestinationBlock.previous() == firstDestinationBlock) {
/*
Even more crazy case: the destinationBlock was the first top visible block.
*/
destination->verticalScrollBar()->setValue(0);
}
}
} else { // we unfold the destination
QTextBlock nextSource = sourceBlock.next();
QTextBlock nextDestination = destinationBlock.next();
TextEditor::BaseTextDocumentLayout::doFoldOrUnfold(destinationBlock, !isSourceFolded);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(nextSource, 0);
TextEditor::BaseTextDocumentLayout::setFoldingIndent(nextDestination, 0);
sourceBlock.setVisible(false);
sourceBlock.setLineCount(0);
destinationBlock.setVisible(false);
destinationBlock.setLineCount(0);
TextEditor::BaseTextDocumentLayout::setFolded(nextSource, false);
TextEditor::BaseTextDocumentLayout::setFolded(nextDestination, false);
}
break; // only one should be synchronized
}
}
sourceBlock = sourceBlock.next();
destinationBlock = destinationBlock.next();
}
BaseTextDocumentLayout *sourceLayout = qobject_cast<BaseTextDocumentLayout *>(source->document()->documentLayout());
if (sourceLayout) {
sourceLayout->requestUpdate();
sourceLayout->emitDocumentSizeChanged();
}
source->updateFoldingHighlight(source->mapFromGlobal(QCursor::pos()));
BaseTextDocumentLayout *destinationLayout = qobject_cast<BaseTextDocumentLayout *>(destination->document()->documentLayout());
if (destinationLayout) {
destinationLayout->requestUpdate();
destinationLayout->emitDocumentSizeChanged();
}
m_foldingBlocker = false;
}
} // namespace DiffEditor