//
//          Copyright (c) 1990-2011, Scientific Toolworks, Inc.
//
// The License.txt file describes the conditions under which this software may be distributed.
//
// Author: Jason Haslam
//
// Additions Copyright (c) 2011 Archaeopteryx Software, Inc. d/b/a Wingware
// ScintillaQt.cpp - Qt specific subclass of ScintillaBase

#include "PlatQt.h"
#include "ScintillaQt.h"
#ifdef SCI_LEXER
#include "LexerModule.h"
#include "ExternalLexer.h"
#endif

#include <QApplication>
#include <QDrag>
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
#include <QInputContext>
#endif
#include <QMimeData>
#include <QMenu>
#include <QScrollBar>
#include <QTimer>
#include <QTextCodec>

#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif


ScintillaQt::ScintillaQt(QAbstractScrollArea *parent)
: QObject(parent), scrollArea(parent), vMax(0),  hMax(0), vPage(0), hPage(0),
 haveMouseCapture(false), dragWasDropped(false)
{

	wMain = scrollArea->viewport();

	// On OS X drawing text into a pixmap moves it around 1 pixel to
	// the right compared to drawing it directly onto a window.
	// Buffered drawing turned off by default to avoid this.
	WndProc(SCI_SETBUFFEREDDRAW, false, 0);

	Initialise();

	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		timers[tr] = 0;
	}
}

ScintillaQt::~ScintillaQt()
{
	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		FineTickerCancel(tr);
	}
	SetIdle(false);
}

void ScintillaQt::execCommand(QAction *action)
{
	int command = action->data().toInt();
	Command(command);
}

#if defined(Q_OS_WIN)
static const QString sMSDEVColumnSelect("MSDEVColumnSelect");
static const QString sWrappedMSDEVColumnSelect("application/x-qt-windows-mime;value=\"MSDEVColumnSelect\"");
#elif defined(Q_OS_MAC)
static const QString sScintillaRecPboardType("com.scintilla.utf16-plain-text.rectangular");
static const QString sScintillaRecMimeType("text/x-scintilla.utf16-plain-text.rectangular");
#else
// Linux
static const QString sMimeRectangularMarker("text/x-rectangular-marker");
#endif

#if defined(Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK(5, 0, 0)

class ScintillaRectangularMime : public QMacPasteboardMime {
public:
	ScintillaRectangularMime() : QMacPasteboardMime(MIME_ALL) {
	}

	QString convertorName() {
		return QString("ScintillaRectangularMime");
	}

	bool canConvert(const QString &mime, QString flav) {
		return mimeFor(flav) == mime;
	}

	QString mimeFor(QString flav) {
		if (flav == sScintillaRecPboardType)
			return sScintillaRecMimeType;
		return QString();
	}

	QString flavorFor(const QString &mime) {
		if (mime == sScintillaRecMimeType)
			return sScintillaRecPboardType;
		return QString();
	}

	QVariant convertToMime(const QString & /* mime */, QList<QByteArray> data, QString /* flav */) {
		QByteArray all;
		foreach (QByteArray i, data) {
			all += i;
		}
		return QVariant(all);
	}

	QList<QByteArray> convertFromMime(const QString & /* mime */, QVariant data, QString /* flav */) {
		QByteArray a = data.toByteArray();
		QList<QByteArray> l;
		l.append(a);
		return l;
	}

};

// The Mime object registers itself but only want one for all Scintilla instances.
// Should delete at exit to help memory leak detection but that would be extra work
// and, since the clipboard exists after last Scintilla instance, may be complex.
static ScintillaRectangularMime *singletonMime = 0;

#endif

void ScintillaQt::Initialise()
{
#if defined(Q_OS_WIN) || defined(Q_OS_MAC)
	rectangularSelectionModifier = SCMOD_ALT;
#else
	rectangularSelectionModifier = SCMOD_CTRL;
#endif

#if defined(Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
	if (!singletonMime) {
		singletonMime = new ScintillaRectangularMime();

		QStringList slTypes(sScintillaRecPboardType);
		qRegisterDraggedTypes(slTypes);
	}
#endif

	connect(QApplication::clipboard(), SIGNAL(selectionChanged()),
		this, SLOT(SelectionChanged()));
}

void ScintillaQt::Finalise()
{
	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		FineTickerCancel(tr);
	}
	ScintillaBase::Finalise();
}

void ScintillaQt::SelectionChanged()
{
	bool nowPrimary = QApplication::clipboard()->ownsSelection();
	if (nowPrimary != primarySelection) {
		primarySelection = nowPrimary;
		Redraw();
	}
}

bool ScintillaQt::DragThreshold(Point ptStart, Point ptNow)
{
	int xMove = abs(ptStart.x - ptNow.x);
	int yMove = abs(ptStart.y - ptNow.y);
	return (xMove > QApplication::startDragDistance()) ||
		(yMove > QApplication::startDragDistance());
}

static QString StringFromSelectedText(const SelectionText &selectedText)
{
	if (selectedText.codePage == SC_CP_UTF8) {
		return QString::fromUtf8(selectedText.Data(), static_cast<int>(selectedText.Length()));
	} else {
		QTextCodec *codec = QTextCodec::codecForName(
				CharacterSetID(selectedText.characterSet));
		return codec->toUnicode(selectedText.Data(), static_cast<int>(selectedText.Length()));
	}
}

static void AddRectangularToMime(QMimeData *mimeData, QString su)
{
#if defined(Q_OS_WIN)
	// Add an empty marker
	mimeData->setData(sMSDEVColumnSelect, QByteArray());
#elif defined(Q_OS_MAC)
	// OS X gets marker + data to work with other implementations.
	// Don't understand how this works but it does - the
	// clipboard format is supposed to be UTF-16, not UTF-8.
	mimeData->setData(sScintillaRecMimeType, su.toUtf8());
#else
	Q_UNUSED(su);
	// Linux
	// Add an empty marker
	mimeData->setData(sMimeRectangularMarker, QByteArray());
#endif
}

static bool IsRectangularInMime(const QMimeData *mimeData)
{
	QStringList formats = mimeData->formats();
	for (int i = 0; i < formats.size(); ++i) {
#if defined(Q_OS_WIN)
		// Windows rectangular markers
		// If rectangular copies made by this application, see base name.
		if (formats[i] == sMSDEVColumnSelect)
			return true;
		// Otherwise see wrapped name.
		if (formats[i] == sWrappedMSDEVColumnSelect)
			return true;
#elif defined(Q_OS_MAC)
		if (formats[i] == sScintillaRecMimeType)
			return true;
#else
		// Linux
		if (formats[i] == sMimeRectangularMarker)
			return true;
#endif
	}
	return false;
}

bool ScintillaQt::ValidCodePage(int codePage) const
{
	return codePage == 0
	|| codePage == SC_CP_UTF8
	|| codePage == 932
	|| codePage == 936
	|| codePage == 949
	|| codePage == 950
	|| codePage == 1361;
}


void ScintillaQt::ScrollText(int linesToMove)
{
	int dy = vs.lineHeight * (linesToMove);
	scrollArea->viewport()->scroll(0, dy);
}

void ScintillaQt::SetVerticalScrollPos()
{
	scrollArea->verticalScrollBar()->setValue(topLine);
	emit verticalScrolled(topLine);
}

void ScintillaQt::SetHorizontalScrollPos()
{
	scrollArea->horizontalScrollBar()->setValue(xOffset);
	emit horizontalScrolled(xOffset);
}

bool ScintillaQt::ModifyScrollBars(int nMax, int nPage)
{
	bool modified = false;

	int vNewPage = nPage;
	int vNewMax = nMax - vNewPage + 1;
	if (vMax != vNewMax || vPage != vNewPage) {
		vMax = vNewMax;
		vPage = vNewPage;
		modified = true;

		scrollArea->verticalScrollBar()->setMaximum(vMax);
		scrollArea->verticalScrollBar()->setPageStep(vPage);
		emit verticalRangeChanged(vMax, vPage);
	}

	int hNewPage = GetTextRectangle().Width();
	int hNewMax = (scrollWidth > hNewPage) ? scrollWidth - hNewPage : 0;
	int charWidth = vs.styles[STYLE_DEFAULT].aveCharWidth;
	if (hMax != hNewMax || hPage != hNewPage ||
	    scrollArea->horizontalScrollBar()->singleStep() != charWidth) {
		hMax = hNewMax;
		hPage = hNewPage;
		modified = true;

		scrollArea->horizontalScrollBar()->setMaximum(hMax);
		scrollArea->horizontalScrollBar()->setPageStep(hPage);
		scrollArea->horizontalScrollBar()->setSingleStep(charWidth);
		emit horizontalRangeChanged(hMax, hPage);
	}

	return modified;
}

void ScintillaQt::ReconfigureScrollBars()
{
	if (verticalScrollBarVisible) {
		scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
	} else {
		scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	}

	if (horizontalScrollBarVisible && !Wrapping()) {
		scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
	} else {
		scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	}
}

void ScintillaQt::CopyToModeClipboard(const SelectionText &selectedTeHTTP/1.1 200 OK
Connection: keep-alive
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Content-Disposition: inline; filename="ScintillaQt.cpp"
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Content-Length: 19506
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Date: Mon, 24 Nov 2025 07:08:20 UTC
ETag: "c2b250a3e77b9ae15008db2f4bd874a724d16293"
ETag: "c2b250a3e77b9ae15008db2f4bd874a724d16293"
Expires: Thu, 22 Nov 2035 07:08:20 GMT
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Last-Modified: Mon, 24 Nov 2025 07:08:20 GMT
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//
//          Copyright (c) 1990-2011, Scientific Toolworks, Inc.
//
// The License.txt file describes the conditions under which this software may be distributed.
//
// Author: Jason Haslam
//
// Additions Copyright (c) 2011 Archaeopteryx Software, Inc. d/b/a Wingware
// ScintillaQt.cpp - Qt specific subclass of ScintillaBase

#include "PlatQt.h"
#include "ScintillaQt.h"
#ifdef SCI_LEXER
#include "LexerModule.h"
#include "ExternalLexer.h"
#endif

#include <QApplication>
#include <QDrag>
#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
#include <QInputContext>
#endif
#include <QMimeData>
#include <QMenu>
#include <QScrollBar>
#include <QTimer>
#include <QTextCodec>

#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif


ScintillaQt::ScintillaQt(QAbstractScrollArea *parent)
: QObject(parent), scrollArea(parent), vMax(0),  hMax(0), vPage(0), hPage(0),
 haveMouseCapture(false), dragWasDropped(false)
{

	wMain = scrollArea->viewport();

	// On OS X drawing text into a pixmap moves it around 1 pixel to
	// the right compared to drawing it directly onto a window.
	// Buffered drawing turned off by default to avoid this.
	WndProc(SCI_SETBUFFEREDDRAW, false, 0);

	Initialise();

	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		timers[tr] = 0;
	}
}

ScintillaQt::~ScintillaQt()
{
	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		FineTickerCancel(tr);
	}
	SetIdle(false);
}

void ScintillaQt::execCommand(QAction *action)
{
	int command = action->data().toInt();
	Command(command);
}

#if defined(Q_OS_WIN)
static const QString sMSDEVColumnSelect("MSDEVColumnSelect");
static const QString sWrappedMSDEVColumnSelect("application/x-qt-windows-mime;value=\"MSDEVColumnSelect\"");
#elif defined(Q_OS_MAC)
static const QString sScintillaRecPboardType("com.scintilla.utf16-plain-text.rectangular");
static const QString sScintillaRecMimeType("text/x-scintilla.utf16-plain-text.rectangular");
#else
// Linux
static const QString sMimeRectangularMarker("text/x-rectangular-marker");
#endif

#if defined(Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK(5, 0, 0)

class ScintillaRectangularMime : public QMacPasteboardMime {
public:
	ScintillaRectangularMime() : QMacPasteboardMime(MIME_ALL) {
	}

	QString convertorName() {
		return QString("ScintillaRectangularMime");
	}

	bool canConvert(const QString &mime, QString flav) {
		return mimeFor(flav) == mime;
	}

	QString mimeFor(QString flav) {
		if (flav == sScintillaRecPboardType)
			return sScintillaRecMimeType;
		return QString();
	}

	QString flavorFor(const QString &mime) {
		if (mime == sScintillaRecMimeType)
			return sScintillaRecPboardType;
		return QString();
	}

	QVariant convertToMime(const QString & /* mime */, QList<QByteArray> data, QString /* flav */) {
		QByteArray all;
		foreach (QByteArray i, data) {
			all += i;
		}
		return QVariant(all);
	}

	QList<QByteArray> convertFromMime(const QString & /* mime */, QVariant data, QString /* flav */) {
		QByteArray a = data.toByteArray();
		QList<QByteArray> l;
		l.append(a);
		return l;
	}

};

// The Mime object registers itself but only want one for all Scintilla instances.
// Should delete at exit to help memory leak detection but that would be extra work
// and, since the clipboard exists after last Scintilla instance, may be complex.
static ScintillaRectangularMime *singletonMime = 0;

#endif

void ScintillaQt::Initialise()
{
#if defined(Q_OS_WIN) || defined(Q_OS_MAC)
	rectangularSelectionModifier = SCMOD_ALT;
#else
	rectangularSelectionModifier = SCMOD_CTRL;
#endif

#if defined(Q_OS_MAC) && QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
	if (!singletonMime) {
		singletonMime = new ScintillaRectangularMime();

		QStringList slTypes(sScintillaRecPboardType);
		qRegisterDraggedTypes(slTypes);
	}
#endif

	connect(QApplication::clipboard(), SIGNAL(selectionChanged()),
		this, SLOT(SelectionChanged()));
}

void ScintillaQt::Finalise()
{
	for (TickReason tr = tickCaret; tr <= tickDwell; tr = static_cast<TickReason>(tr + 1)) {
		FineTickerCancel(tr);
	}
	ScintillaBase::Finalise();
}

void ScintillaQt::SelectionChanged()
{
	bool nowPrimary = QApplication::clipboard()->ownsSelection();
	if (nowPrimary != primarySelection) {
		primarySelection = nowPrimary;
		Redraw();
	}
}

bool ScintillaQt::DragThreshold(Point ptStart, Point ptNow)
{
	int xMove = abs(ptStart.x - ptNow.x);
	int yMove = abs(ptStart.y - ptNow.y);
	return (xMove > QApplication::startDragDistance()) ||
		(yMove > QApplication::startDragDistance());
}

static QString StringFromSelectedText(const SelectionText &selectedText)
{
	if (selectedText.codePage == SC_CP_UTF8) {
		return QString::fromUtf8(selectedText.Data(), static_cast<int>(selectedText.Length()));
	} else {
		QTextCodec *codec = QTextCodec::codecForName(
				CharacterSetID(selectedText.characterSet));
		return codec->toUnicode(selectedText.Data(), static_cast<int>(selectedText.Length()));
	}
}

static void AddRectangularToMime(QMimeData *mimeData, QString su)
{
#if defined(Q_OS_WIN)
	// Add an empty marker
	mimeData->setData(sMSDEVColumnSelect, QByteArray());
#elif defined(Q_OS_MAC)
	// OS X gets marker + data to work with other implementations.
	// Don't understand how this works but it does - the
	// clipboard format is supposed to be UTF-16, not UTF-8.
	mimeData->setData(sScintillaRecMimeType, su.toUtf8());
#else
	Q_UNUSED(su);
	// Linux
	// Add an empty marker
	mimeData->setData(sMimeRectangularMarker, QByteArray());
#endif
}

static bool IsRectangularInMime(const QMimeData *mimeData)
{
	QStringList formats = mimeData->formats();
	for (int i = 0; i < formats.size(); ++i) {
#if defined(Q_OS_WIN)
		// Windows rectangular markers
		// If rectangular copies made by this application, see base name.
		if (formats[i] == sMSDEVColumnSelect)
			return true;
		// Otherwise see wrapped name.
		if (formats[i] == sWrappedMSDEVColumnSelect)
			return true;
#elif defined(Q_OS_MAC)
		if (formats[i] == sScintillaRecMimeType)
			return true;
#else
		// Linux
		if (formats[i] == sMimeRectangularMarker)
			return true;
#endif
	}
	return false;
}

bool ScintillaQt::ValidCodePage(int codePage) const
{
	return codePage == 0
	|| codePage == SC_CP_UTF8
	|| codePage == 932
	|| codePage == 936
	|| codePage == 949
	|| codePage == 950
	|| codePage == 1361;
}


void ScintillaQt::ScrollText(int linesToMove)
{
	int dy = vs.lineHeight * (linesToMove);
	scrollArea->viewport()->scroll(0, dy);
}

void ScintillaQt::SetVerticalScrollPos()
{
	scrollArea->verticalScrollBar()->setValue(topLine);
	emit verticalScrolled(topLine);
}

void ScintillaQt::SetHorizontalScrollPos()
{
	scrollArea->horizontalScrollBar()->setValue(xOffset);
	emit horizontalScrolled(xOffset);
}

bool ScintillaQt::ModifyScrollBars(int nMax, int nPage)
{
	bool modified = false;

	int vNewPage = nPage;
	int vNewMax = nMax - vNewPage + 1;
	if (vMax != vNewMax || vPage != vNewPage) {
		vMax = vNewMax;
		vPage = vNewPage;
		modified = true;

		scrollArea->verticalScrollBar()->setMaximum(vMax);
		scrollArea->verticalScrollBar()->setPageStep(vPage);
		emit verticalRangeChanged(vMax, vPage);
	}

	int hNewPage = GetTextRectangle().Width();
	int hNewMax = (scrollWidth > hNewPage) ? scrollWidth - hNewPage : 0;
	int charWidth = vs.styles[STYLE_DEFAULT].aveCharWidth;
	if (hMax != hNewMax || hPage != hNewPage ||
	    scrollArea->horizontalScrollBar()->singleStep() != charWidth) {
		hMax = hNewMax;
		hPage = hNewPage;
		modified = true;

		scrollArea->horizontalScrollBar()->setMaximum(hMax);
		scrollArea->horizontalScrollBar()->setPageStep(hPage);
		scrollArea->horizontalScrollBar()->setSingleStep(charWidth);
		emit horizontalRangeChanged(hMax, hPage);
	}

	return modified;
}

void ScintillaQt::ReconfigureScrollBars()
{
	if (verticalScrollBarVisible) {
		scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
	} else {
		scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	}

	if (horizontalScrollBarVisible && !Wrapping()) {
		scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
	} else {
		scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	}
}

void ScintillaQt::CopyToModeClipboard(const SelectionText &selectedText, QClipboard::Mode clipboardMode_)
{
	QClipboard *clipboard = QApplication::clipboard();
	clipboard->clear(clipboardMode_);
	QString su = StringFromSelectedText(selectedText);
	QMimeData *mimeData = new QMimeData();
	mimeData->setText(su);
	if (selectedText.rectangular) {
		AddRectangularToMime(mimeData, su);
	}

	// Allow client code to add additional data (e.g rich text).
	emit aboutToCopy(mimeData);

	clipboard->setMimeData(mimeData, clipboardMode_);
}

void ScintillaQt::Copy()
{
	if (!sel.Empty()) {
		SelectionText st;
		CopySelectionRange(&st);
		CopyToClipboard(st);
	}
}

void ScintillaQt::CopyToClipboard(const SelectionText &selectedText)
{
	CopyToModeClipboard(selectedText, QClipboard::Clipboard);
}

void ScintillaQt::PasteFromMode(QClipboard::Mode clipboardMode_)
{
	QClipboard *clipboard = QApplication::clipboard();
	const QMimeData *mimeData = clipboard->mimeData(clipboardMode_);
	bool isRectangular = IsRectangularInMime(mimeData);
	QString text = clipboard->text(clipboardMode_);
	QByteArray utext = BytesForDocument(text);
	std::string dest(utext.constData(), utext.length());
	SelectionText selText;
	selText.Copy(dest, pdoc->dbcsCodePage, CharacterSetOfDocument(), isRectangular, false);

	UndoGroup ug(pdoc);
	ClearSelection(multiPasteMode == SC_MULTIPASTE_EACH);
	InsertPasteShape(selText.Data(), static_cast<int>(selText.Length()),
		selText.rectangular ? pasteRectangular : pasteStream);
	EnsureCaretVisible();
}

void ScintillaQt::Paste()
{
	PasteFromMode(QClipboard::Clipboard);
}

void ScintillaQt::ClaimSelection()
{
	if (QApplication::clipboard()->supportsSelection()) {
		// X Windows has a 'primary selection' as well as the clipboard.
		// Whenever the user selects some text, we become the primary selection
		if (!sel.Empty()) {
			primarySelection = true;
			SelectionText st;
			CopySelectionRange(&st);
			CopyToModeClipboard(st, QClipboard::Selection);
		} else {
			primarySelection = false;
		}
	}
}

void ScintillaQt::NotifyChange()
{
	emit notifyChange();
	emit command(
			Platform::LongFromTwoShorts(GetCtrlID(), SCEN_CHANGE),
			reinterpret_cast<sptr_t>(wMain.GetID()));
}

void ScintillaQt::NotifyFocus(bool focus)
{
	emit command(
			Platform::LongFromTwoShorts
					(GetCtrlID(), focus ? SCEN_SETFOCUS : SCEN_KILLFOCUS),
			reinterpret_cast<spt