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/* This file is part of the KDE project
* Copyright (C) 2007 Thomas Zander <zander@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KoRulerController_p_h
#define KoRulerController_p_h
#include "KoRulerController.h"
#include "KoText.h"
#include "styles/KoParagraphStyle.h"
#include <KoCanvasResourceManager.h>
#include <KoTextDocument.h>
#include <WidgetsDebug.h>
#include <QVariant>
#include <QTextOption>
#include <QTextDocument>
#include <QTextBlock>
#include <QTextBlockFormat>
#include <QTextLayout>
#include <QTextCursor>
#include <QLocale>
#include <KoRuler.h>
static int compareTabs(KoText::Tab &tab1, KoText::Tab &tab2)
{
return tab1.position < tab2.position;
}
class Q_DECL_HIDDEN KoRulerController::Private
{
public:
Private(KoRuler *r, KoCanvasResourceManager *crp)
: ruler(r),
resourceManager(crp),
lastPosition(-1),
originalTabIndex(-2),
currentTabIndex(-2) {
}
void canvasResourceChanged(int key) {
if (key != KoText::CurrentTextPosition && key != KoText::CurrentTextDocument
&& key != KoCanvasResourceManager::ActiveRange)
return;
QTextBlock block = currentBlock();
if (! block.isValid()) {
ruler->setShowIndents(false);
ruler->setShowTabs(false);
return;
}
QRectF activeRange = resourceManager->resource(KoCanvasResourceManager::ActiveRange).toRectF();
ruler->setOverrideActiveRange(activeRange.left(), activeRange.right());
lastPosition = block.position();
currentTabIndex = -2;
tabList.clear();
QTextBlockFormat format = block.blockFormat();
ruler->setRightToLeft(block.layout()->textOption().textDirection() == Qt::RightToLeft);
ruler->setParagraphIndent(format.leftMargin());
ruler->setFirstLineIndent(format.textIndent());
ruler->setEndIndent(format.rightMargin());
ruler->setRelativeTabs(relativeTabs());
QList<KoRuler::Tab> tabs;
QVariant variant = format.property(KoParagraphStyle::TabPositions);
if (! variant.isNull()) {
foreach(const QVariant & var, qvariant_cast<QList<QVariant> >(variant)) {
KoText::Tab textTab = var.value<KoText::Tab>();
KoRuler::Tab tab;
tab.position = textTab.position;
tab.type = textTab.type;
tabs.append(tab);
}
}
qreal tabStopDistance = format.doubleProperty(KoParagraphStyle::TabStopDistance);
/* if (tabStopDistance <= 0) {
// kotextdocumentlayout hardly reachable from here :(
tabStopDistance = block.document()->documentLayout()->defaultTabSpacing();
} */
ruler->updateTabs(tabs, tabStopDistance);
ruler->setShowIndents(true);
ruler->setShowTabs(true);
}
void indentsChanged() {
QTextBlock block = currentBlock();
if (! block.isValid())
return;
QTextCursor cursor(block);
QTextBlockFormat bf = cursor.blockFormat();
bf.setLeftMargin(ruler->paragraphIndent());
bf.setTextIndent(ruler->firstLineIndent());
bf.setRightMargin(ruler->endIndent());
cursor.setBlockFormat(bf);
}
void tabChanged(int originalIndex, KoRuler::Tab *tab) {
QVariant docVar = resourceManager->resource(KoText::CurrentTextDocument);
if (docVar.isNull())
return;
QTextDocument *doc = static_cast<QTextDocument*>(docVar.value<void*>());
if (doc == 0)
return;
const int position = resourceManager->intResource(KoText::CurrentTextPosition);
const int anchor = resourceManager->intResource(KoText::CurrentTextAnchor);
QTextCursor cursor(doc);
cursor.setPosition(anchor);
cursor.setPosition(position, QTextCursor::KeepAnchor);
if (originalTabIndex == -2 || originalTabIndex != originalIndex) {
originalTabIndex = originalIndex;
KoParagraphStyle style(cursor.blockFormat(), cursor.blockCharFormat());
tabList = style.tabPositions();
if (originalTabIndex >= 0) { // modification
currentTab = tabList[originalTabIndex];
currentTabIndex = originalTabIndex;
} else if (originalTabIndex == -1 && tab) { // new tab.
currentTab = KoText::Tab();
currentTab.type = tab->type;
if (tab->type == QTextOption::DelimiterTab)
currentTab.delimiter = QLocale::system().decimalPoint(); // TODO check language of text
currentTabIndex = tabList.count();
tabList << currentTab;
} else {
warnWidgets << "Unexpected input from tabChanged signal";
Q_ASSERT(false);
return;
}
}
if (tab) {
currentTab.position = tab->position;
currentTab.type = tab->type;
if (currentTabIndex == -2) { // add the new tab to the list, sorting in.
currentTabIndex = tabList.count();
tabList << currentTab;
} else
tabList.replace(currentTabIndex, currentTab);
} else if (currentTabIndex >= 0) { // lets remove it.
tabList.removeAt(currentTabIndex);
currentTabIndex = -2;
}
QTextBlockFormat bf;
QVector<KoText::Tab> sortedList = tabList;
qSort(sortedList.begin(), sortedList.end(), compareTabs);
QList<QVariant> list;
foreach(const KoText::Tab & tab, sortedList) {
QVariant v;
v.setValue(tab);
list.append(v);
}
bf.setProperty(KoParagraphStyle::TabPositions, list);
cursor.mergeBlockFormat(bf);
}
QTextBlock currentBlock() {
QVariant docVar = resourceManager->resource(KoText::CurrentTextDocument);
if (docVar.isNull())
return QTextBlock();
QTextDocument *doc = static_cast<QTextDocument*>(docVar.value<void*>());
if (doc == 0)
return QTextBlock();
return doc->findBlock(resourceManager->intResource(KoText::CurrentTextPosition));
}
bool relativeTabs() {
QVariant docVar = resourceManager->resource(KoText::CurrentTextDocument);
if (docVar.isNull())
return false;
QTextDocument *doc = static_cast<QTextDocument*>(docVar.value<void*>());
if (doc == 0)
return false;
return KoTextDocument(doc).relativeTabs();
}
void tabChangeInitiated() {
tabList.clear();
originalTabIndex = -2;
}
private:
KoRuler *ruler;
KoCanvasResourceManager *resourceManager;
int lastPosition; // the last position in the text document.
QVector<KoText::Tab> tabList;
KoText::Tab currentTab;
int originalTabIndex, currentTabIndex;
};
#endif
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