Differential D12016 Diff 31733 src/view/kateviewaccessible.cpp

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src/view/kateviewaccessible.cpp

		1		/* This file is part of the KDE libraries
		2		Copyright (C) 2018 Jaime Torres <jtamate@gmail.com>
		3
		4		This library is free software; you can redistribute it and/or
		5		modify it under the terms of the GNU Library General Public
		6		License as published by the Free Software Foundation; either
		7		version 2 of the License, or (at your option) any later version.
		8
		9		This library is distributed in the hope that it will be useful,
		10		but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		12		Library General Public License for more details.
		13
		14		You should have received a copy of the GNU Library General Public License
		15		along with this library; see the file COPYING.LIB. If not, write to
		16		the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
		17		Boston, MA 02110-1301, USA.
		18		*/
		19
		20		#ifndef QT_NO_ACCESSIBILITY
		21
		22		#include "kateviewaccessible.h"
		23
		24		//static variables instances
		25		KateViewInternal *KateViewAccessible::m_lastView;
		26		KTextEditor::Cursor KateViewAccessible::m_lastCursor;
		27		int KateViewAccessible::m_lastPosition;
		28
		29		KateViewAccessible::KateViewAccessible(KateViewInternal *view)
		30		: QAccessibleWidget(view, QAccessible::EditableText)
		31		{
		32		QObject::connect(view->view()->document(), &KTextEditor::Document::textChanged, this, &KateViewAccessible::_changed);
		33		}
		34
		35		int KateViewAccessible::positionFromCursor(KateViewInternal *view, const KTextEditor::Cursor &cursor)
		36		{
		37		int pos = m_lastPosition;
		38		const KTextEditor::Document *doc = view->view()->document();
		39
		40		// m_lastPosition < 0 is invalid, so it has to be calculated again from the beginning
		41		if (m_lastPosition < 0 \|\| view != m_lastView) {
		42		pos = 0;
		43		// Default (worst) case
		44		for (int line = 0; line < cursor.line(); ++line) {
		45		pos += doc->line(line).size();
		46		}
		47		// new line for each line
		48		pos += cursor.line();
		49		m_lastView = view;
		50		}
		51		else {
		52		// if the lines are the same, just add the cursor.column(), otherwise
		53		if (cursor.line() != m_lastCursor.line()) {
		54		// If the cursor is after the previous cursor
		55		if (m_lastCursor.line() < cursor.line()) {
		56		for (int line = m_lastCursor.line(); line < cursor.line(); ++line) {
		57		pos += doc->line(line).size();
		58		}
		59		// add new line character for each line
		60		pos += cursor.line() - m_lastCursor.line();
		61		}
		62		else {
		63		for (int line = cursor.line(); line < m_lastCursor.line(); ++line) {
		64		pos -= doc->line(line).size();
		65		}
		66		// remove new line character for each line
		67		pos -= m_lastCursor.line() - cursor.line();
		68		}
		69		}
		70		}
		71		m_lastCursor = cursor;
		72		m_lastPosition = pos;
		73
		74		return pos + cursor.column();
		75		}
		76
		77
		78		/**
		79		* Factory-function used to create \a KateViewAccessible instances for KateViewInternal
		80		* to make the KateViewInternal accessible.
		81		*/
		82		QAccessibleInterface accessibleInterfaceFactory(const QString &key, QObject object)
		83		{
		84		Q_UNUSED(key)
		85		//if (key == QLatin1String("KateViewInternal"))
		86		if (KateViewInternal view = qobject_cast<KateViewInternal >(object)) {
		87		return new KateViewAccessible(view);
		88		}
		89		return nullptr;
		90		}
		91
		92
		93		#endif