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// The definition of the class that implements accessibility support.
//
// Copyright (c) 2019 Riverbank Computing Limited <info@riverbankcomputing.com>
//
// This file is part of QScintilla.
//
// This file may be used under the terms of the GNU General Public License
// version 3.0 as published by the Free Software Foundation and appearing in
// the file LICENSE included in the packaging of this file. Please review the
// following information to ensure the GNU General Public License version 3.0
// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
//
// If you do not wish to use this file under the terms of the GPL version 3.0
// then you may purchase a commercial license. For more information contact
// info@riverbankcomputing.com.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#ifndef _SCIACCESSIBILITY_H
#define _SCIACCESSIBILITY_H
#include <qglobal.h>
#if !defined(QT_NO_ACCESSIBILITY)
#include <QAccessible>
#include <QAccessibleEditableTextInterface>
#include <QAccessibleTextInterface>
#include <QAccessibleWidget>
#include <QByteArray>
#include <QFont>
#include <QList>
#include <QString>
class QsciScintillaBase;
// The implementation of accessibility support.
class QsciAccessibleScintillaBase : public QAccessibleWidget,
public QAccessibleTextInterface,
public QAccessibleEditableTextInterface
{
public:
explicit QsciAccessibleScintillaBase(QWidget *widget);
~QsciAccessibleScintillaBase();
static void initialise();
static void selectionChanged(QsciScintillaBase *sb, bool selection);
static void textInserted(QsciScintillaBase *sb, int position,
const char *text, int length);
static void textDeleted(QsciScintillaBase *sb, int position,
const char *text, int length);
static void updated(QsciScintillaBase *sb);
void selection(int selectionIndex, int *startOffset, int *endOffset) const;
int selectionCount() const;
void addSelection(int startOffset, int endOffset);
void removeSelection(int selectionIndex);
void setSelection(int selectionIndex, int startOffset, int endOffset);
int cursorPosition() const;
void setCursorPosition(int position);
QString text(int startOffset, int endOffset) const;
QString textBeforeOffset(int offset,
QAccessible::TextBoundaryType boundaryType, int *startOffset,
int *endOffset) const;
QString textAfterOffset(int offset,
QAccessible::TextBoundaryType boundaryType, int *startOffset,
int *endOffset) const;
QString textAtOffset(int offset,
QAccessible::TextBoundaryType boundaryType, int *startOffset,
int *endOffset) const;
int characterCount() const;
QRect characterRect(int offset) const;
int offsetAtPoint(const QPoint &point) const;
void scrollToSubstring(int startIndex, int endIndex);
QString attributes(int offset, int *startOffset, int *endOffset) const;
void deleteText(int startOffset, int endOffset);
void insertText(int offset, const QString &text);
void replaceText(int startOffset, int endOffset, const QString &text);
QAccessible::State state() const;
void *interface_cast(QAccessible::InterfaceType t);
private:
static bool needs_initialising;
static QList<QsciAccessibleScintillaBase *> all_accessibles;
int current_cursor_offset;
bool is_selection;
static QsciAccessibleScintillaBase *findAccessible(QsciScintillaBase *sb);
QsciScintillaBase *sciWidget() const;
int validPosition(int offset) const;
static bool boundaries(QsciScintillaBase *sb, int position,
QAccessible::TextBoundaryType boundaryType, int *start_position,
int *end_position);
static QString textRange(QsciScintillaBase *sb, int start_position,
int end_position);
static QString bytesAsText(QsciScintillaBase *sb, const char *bytes,
int length);
static QByteArray textAsBytes(QsciScintillaBase *sb, const QString &text);
static int positionAsOffset(QsciScintillaBase *sb, int position);
static void positionRangeAsOffsetRange(QsciScintillaBase *sb,
int start_position, int end_position, int *startOffset,
int *endOffset);
static int offsetAsPosition(QsciScintillaBase *sb, int offset);
static QString colourAsRGB(int colour);
static void addAttribute(QString &attrs, const char *name,
const QString &value);
QFont fontForStyle(int style) const;
};
#endif
#endif
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