From f053ec8c1498261db2d079bce20ef8b28d418982 Mon Sep 17 00:00:00 2001
From: Henrik Abelsson <henrik@abelsson.com>
Date: Tue, 21 Jul 2009 10:37:00 +0200
Subject: [PATCH] Initial support for emacs like fill-paragraph.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Merge-request: 882
Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>
---
src/plugins/texteditor/basetexteditor.cpp | 123 ++++++++++++++++++
src/plugins/texteditor/basetexteditor.h | 1 +
.../texteditor/texteditoractionhandler.cpp | 7 +
.../texteditor/texteditoractionhandler.h | 2 +
src/plugins/texteditor/texteditorconstants.h | 3 +-
5 files changed, 135 insertions(+), 1 deletion(-)
diff --git a/src/plugins/texteditor/basetexteditor.cpp b/src/plugins/texteditor/basetexteditor.cpp
index 189b9a50537..b61236cdd95 100644
--- a/src/plugins/texteditor/basetexteditor.cpp
+++ b/src/plugins/texteditor/basetexteditor.cpp
@@ -3850,6 +3850,129 @@ void BaseTextEditor::format()
cursor.endEditBlock();
}
+void BaseTextEditor::rewrapParagraph()
+{
+ const int paragraphWidth = displaySettings().m_wrapColumn;
+ const QRegExp anyLettersOrNumbers = QRegExp("\\w");
+ const int tabSize = tabSettings().m_tabSize;
+
+ QTextCursor cursor = textCursor();
+ cursor.beginEditBlock();
+
+ // Find start of paragraph.
+
+ while (cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor)) {
+ QTextBlock block = cursor.block();
+ QString text = block.text();
+
+ // If this block is empty, move marker back to previous and terminate.
+ if (!text.contains(anyLettersOrNumbers)) {
+ cursor.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor);
+ break;
+ }
+ }
+
+ cursor.movePosition(QTextCursor::StartOfBlock, QTextCursor::MoveAnchor);
+
+ // Find indent level of current block.
+
+ int indentLevel = 0;
+ QString text = cursor.block().text();
+
+ for (int i = 0; i < text.length(); i++) {
+ const QChar ch = text.at(i);
+
+ if (ch == QLatin1Char(' '))
+ indentLevel++;
+ else if (ch == QLatin1Char('\t'))
+ indentLevel += tabSize - (indentLevel % tabSize);
+ else
+ break;
+ }
+
+ // If there is a common prefix, it should be kept and expanded to all lines.
+ // this allows nice reflowing of doxygen style comments.
+ QTextCursor nextBlock = cursor;
+ QString commonPrefix;
+
+ if (nextBlock.movePosition(QTextCursor::NextBlock))
+ {
+ QString nText = nextBlock.block().text();
+ int maxLength = qMin(text.length(), nText.length());
+
+ for (int i = 0; i < maxLength; ++i) {
+ const QChar ch = text.at(i);
+
+ if (ch != nText[i] || ch.isLetterOrNumber())
+ break;
+ commonPrefix.append(ch);
+ }
+ }
+
+
+ // Find end of paragraph.
+ while (cursor.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor)) {
+ QString text = cursor.block().text();
+
+ if (!text.contains(anyLettersOrNumbers))
+ break;
+ }
+
+
+ QString selectedText = cursor.selectedText();
+
+ // Preserve initial indent level.or common prefix.
+ QString spacing;
+
+ if (commonPrefix.isEmpty()) {
+ spacing = tabSettings().indentationString(0, indentLevel);
+ } else {
+ spacing = commonPrefix;
+ indentLevel = commonPrefix.length();
+ }
+
+ int currentLength = indentLevel;
+ QString result;
+ result.append(spacing);
+
+ // Remove existing instances of any common prefix from paragraph to
+ // reflow.
+ selectedText.remove(0, commonPrefix.length());
+ commonPrefix.prepend(QChar::ParagraphSeparator);
+ selectedText.replace(commonPrefix, QLatin1String("\n"));
+
+ // remove any repeated spaces, trim lines to PARAGRAPH_WIDTH width and
+ // keep the same indentation level as first line in paragraph.
+ QString currentWord;
+
+ for (int i = 0; i < selectedText.length(); ++i) {
+ QChar ch = selectedText.at(i);
+ if (ch.isSpace()) {
+ if (!currentWord.isEmpty()) {
+ currentLength += currentWord.length() + 1;
+
+ if (currentLength > paragraphWidth - indentLevel) {
+ currentLength = currentWord.length() + 1 + indentLevel;
+ result.append(QChar::ParagraphSeparator);
+ result.append(spacing);
+ }
+
+ result.append(currentWord);
+ result.append(QLatin1String(" "));
+ currentWord.clear();
+ }
+
+ continue;
+ }
+
+ currentWord.append(ch);
+ }
+ result.append(QChar::ParagraphSeparator);
+
+ cursor.insertText(result);
+ cursor.endEditBlock();
+}
+
void BaseTextEditor::unCommentSelection()
{
}
diff --git a/src/plugins/texteditor/basetexteditor.h b/src/plugins/texteditor/basetexteditor.h
index 9fb764aae2f..cc8df867c5c 100644
--- a/src/plugins/texteditor/basetexteditor.h
+++ b/src/plugins/texteditor/basetexteditor.h
@@ -483,6 +483,7 @@ public:
public slots:
virtual void format();
+ virtual void rewrapParagraph();
virtual void unCommentSelection();
virtual void setFontSettings(const TextEditor::FontSettings &);
void setFontSettingsIfVisible(const TextEditor::FontSettings &);
diff --git a/src/plugins/texteditor/texteditoractionhandler.cpp b/src/plugins/texteditor/texteditoractionhandler.cpp
index ff6933cabe1..abf81e0b576 100644
--- a/src/plugins/texteditor/texteditoractionhandler.cpp
+++ b/src/plugins/texteditor/texteditoractionhandler.cpp
@@ -141,6 +141,12 @@ void TextEditorActionHandler::createActions()
advancedMenu->addAction(command, Core::Constants::G_EDIT_FORMAT);
connect(m_formatAction, SIGNAL(triggered(bool)), this, SLOT(formatAction()));
+ m_rewrapParagraphAction = new QAction(tr("&Rewrap Paragraph"), this);
+ command = am->registerAction(m_rewrapParagraphAction, TextEditor::Constants::REWRAP_PARAGRAPH, m_contextId);
+ //command->setDefaultKeySequence(QKeySequence(tr("Alt+Q"))); (No default key sequence for now.)
+ advancedMenu->addAction(command, Core::Constants::G_EDIT_FORMAT);
+ connect(m_rewrapParagraphAction, SIGNAL(triggered(bool)), this, SLOT(rewrapParagraphAction()));
+
m_visualizeWhitespaceAction = new QAction(tr("&Visualize Whitespace"), this);
m_visualizeWhitespaceAction->setCheckable(true);
@@ -398,6 +404,7 @@ FUNCTION2(copyAction, copy)
FUNCTION2(cutAction, cut)
FUNCTION2(pasteAction, paste)
FUNCTION2(formatAction, format)
+FUNCTION2(rewrapParagraphAction, rewrapParagraph)
FUNCTION2(selectAllAction, selectAll)
FUNCTION(cleanWhitespace)
FUNCTION(unCommentSelection)
diff --git a/src/plugins/texteditor/texteditoractionhandler.h b/src/plugins/texteditor/texteditoractionhandler.h
index c782ff9b838..a184ac6e442 100644
--- a/src/plugins/texteditor/texteditoractionhandler.h
+++ b/src/plugins/texteditor/texteditoractionhandler.h
@@ -91,6 +91,7 @@ private slots:
void gotoAction();
void printAction();
void formatAction();
+ void rewrapParagraphAction();
void setVisualizeWhitespace(bool);
void cleanWhitespace();
void setTextWrapping(bool);
@@ -125,6 +126,7 @@ private:
QAction *m_gotoAction;
QAction *m_printAction;
QAction *m_formatAction;
+ QAction *m_rewrapParagraphAction;
QAction *m_visualizeWhitespaceAction;
QAction *m_cleanWhitespaceAction;
QAction *m_textWrappingAction;
diff --git a/src/plugins/texteditor/texteditorconstants.h b/src/plugins/texteditor/texteditorconstants.h
index 18d19492987..8b83ea27a13 100644
--- a/src/plugins/texteditor/texteditorconstants.h
+++ b/src/plugins/texteditor/texteditorconstants.h
@@ -60,8 +60,9 @@ const char * const CUT_LINE = "TextEditor.CutLine";
const char * const DELETE_LINE = "TextEditor.DeleteLine";
const char * const DELETE_WORD = "TextEditor.DeleteWord";
const char * const SELECT_ENCODING = "TextEditor.SelectEncoding";
+const char * const REWRAP_PARAGRAPH = "TextEditor.RewrapParagraph";
const char * const GOTO_OPENING_PARENTHESIS = "TextEditor.GotoOpeningParenthesis";
-const char * const GOTO_CLOSING_PARENTHESIS = "TextEditor.GotoOpeningParenthesis";
+const char * const GOTO_CLOSING_PARENTHESIS = "TextEditor.GotoClosingParenthesis";
const char * const C_TEXTEDITOR_MIMETYPE_TEXT = "text/plain";
const char * const C_TEXTEDITOR_MIMETYPE_XML = "application/xml";
--
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