1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include <QFontMetrics>
22 #include <QGraphicsSceneMouseEvent>
24 #include <QTextLayout>
27 #include "chatlinemodel.h"
30 ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) : QGraphicsItem(parent), _index(index_) {
31 _fontMetrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
36 ChatItem::~ChatItem() {
40 QVariant ChatItem::data(int role) const {
41 if(!_index.isValid()) {
42 qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
45 return _index.data(role);
48 int ChatItem::setWidth(int w) {
50 if(w == _boundingRect.width()) return _boundingRect.height();
51 _boundingRect.setWidth(w);
52 int h = heightForWidth(w);
53 _boundingRect.setHeight(h);
54 if(haveLayout()) updateLayout();
58 int ChatItem::heightForWidth(int width) {
59 if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
60 return fontMetrics()->lineSpacing(); // only contents can be multi-line
63 WrapColumnFinder finder(this);
64 while(finder.nextWrapColumn() > 0) _lines++;
65 return _lines * fontMetrics()->lineSpacing();
68 QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode) {
69 QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
72 option.setWrapMode(wrapMode);
73 layout->setTextOption(option);
75 QList<QTextLayout::FormatRange> formatRanges
76 = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
77 layout->setAdditionalFormats(formatRanges);
81 void ChatItem::updateLayout() {
82 if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
85 ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
86 if(!wrapList.count()) return; // empty chatitem
88 ChatLineModel::Word word = wrapList.at(0);
91 WrapColumnFinder finder(this);
92 _layout->beginLayout();
94 QTextLine line = _layout->createLine();
98 int col = finder.nextWrapColumn();
99 line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
101 h += fontMetrics()->leading();
102 line.setPosition(QPointF(0, h));
105 _layout->endLayout();
108 void ChatItem::clearLayout() {
113 //int ChatItem::findNextWrapColumn(
115 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
116 Q_UNUSED(option); Q_UNUSED(widget);
117 if(!haveLayout()) updateLayout();
118 _layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
119 painter->drawRect(boundingRect());
121 QVariantList wrapList = data(ChatLineModel::WrapListRole).toList();
122 for(int i = 2; i < wrapList.count(); i+=2) {
123 QRect r(wrapList[i-1].toUInt(), 0, wrapList[i+1].toUInt() - wrapList[i-1].toUInt(), fontMetrics()->lineSpacing());
124 painter->drawRect(r);
129 void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
130 qDebug() << (void*)this << "moving" << event->pos();
131 if(event->pos().y() < 0) {
132 QTextCursor cursor(document());
133 //cursor.insertText("foo");
134 //cursor.select(QTextCursor::Document);
136 } else QGraphicsTextItem::mouseMoveEvent(event);
140 /*************************************************************************************************/
142 ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
143 wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
151 ChatItem::WrapColumnFinder::~WrapColumnFinder() {
155 int ChatItem::WrapColumnFinder::nextWrapColumn() {
156 while(wordidx < wrapList.count()) {
157 w += wrapList.at(wordidx).width;
158 if(w >= item->width()) {
159 if(lastwrapcol >= wrapList.at(wordidx).start) {
160 // first word, and it doesn't fit
161 if(!line.isValid()) {
162 layout = item->createLayout(QTextOption::NoWrap);
163 layout->beginLayout();
164 line = layout->createLine();
165 line.setLineWidth(item->width());
168 int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
169 qreal x = line.cursorToX(idx, QTextLine::Trailing);
170 w = w - wrapList.at(wordidx).width - (x - lastwrappos);
175 // not the first word, so just wrap before this
176 lastwrapcol = wrapList.at(wordidx).start;
177 lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
181 w += wrapList.at(wordidx).trailing;