#include <QPainter>
#include <QPalette>
#include <QTextLayout>
+#ifdef HAVE_WEBKIT
+#include <QWebView>
+#endif
+#include <QGraphicsProxyWidget>
#include "chatitem.h"
#include "chatlinemodel.h"
#include "qtui.h"
+#include "qtuistyle.h"
-ChatItem::ChatItem(ChatLineModel::ColumnType col, QAbstractItemModel *model, QGraphicsItem *parent)
+ChatItem::ChatItem(const qreal &width, const qreal &height, const QPointF &pos, QGraphicsItem *parent)
: QGraphicsItem(parent),
- _fontMetrics(0),
+ _data(0),
+ _boundingRect(0, 0, width, height),
_selectionMode(NoSelection),
- _selectionStart(-1),
- _layout(0)
+ _selectionStart(-1)
{
- Q_ASSERT(model);
- QModelIndex index = model->index(row(), col);
- _fontMetrics = QtUi::style()->fontMetrics(model->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
setAcceptHoverEvents(true);
setZValue(20);
+ setPos(pos);
}
ChatItem::~ChatItem() {
- delete _layout;
+ delete _data;
}
QVariant ChatItem::data(int role) const {
return model()->data(index, role);
}
-qreal ChatItem::setGeometry(qreal w, qreal h) {
- if(w == _boundingRect.width()) return _boundingRect.height();
- prepareGeometryChange();
- _boundingRect.setWidth(w);
- if(h < 0) h = computeHeight();
- _boundingRect.setHeight(h);
- if(haveLayout()) updateLayout();
- return h;
-}
-
-qreal ChatItem::computeHeight() {
- return fontMetrics()->lineSpacing(); // only contents can be multi-line
-}
-
QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
}
void ChatItem::updateLayout() {
- if(!haveLayout())
- setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft));
-
- layout()->beginLayout();
- QTextLine line = layout()->createLine();
+ if(!privateData()) {
+ setPrivateData(new ChatItemPrivate(createLayout()));
+ }
+ QTextLayout *layout_ = layout();
+ layout_->beginLayout();
+ QTextLine line = layout_->createLine();
if(line.isValid()) {
line.setLineWidth(width());
line.setPosition(QPointF(0,0));
}
- layout()->endLayout();
+ layout_->endLayout();
}
void ChatItem::clearLayout() {
- delete _layout;
- _layout = 0;
+ delete _data;
+ _data = 0;
}
// NOTE: This is not the most time-efficient implementation, but it saves space by not caching unnecessary data
// This is a deliberate trade-off. (-> selectFmt creation, data() call)
void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
Q_UNUSED(option); Q_UNUSED(widget);
- if(!haveLayout()) updateLayout();
+ if(!hasLayout())
+ updateLayout();
painter->setClipRect(boundingRect()); // no idea why QGraphicsItem clipping won't work
//if(_selectionMode == FullSelection) {
//painter->save();
//painter->fillRect(boundingRect(), QApplication::palette().brush(QPalette::Highlight));
//painter->restore();
//}
- QVector<QTextLayout::FormatRange> formats;
+ QVector<QTextLayout::FormatRange> formats = additionalFormats();
if(_selectionMode != NoSelection) {
QTextLayout::FormatRange selectFmt;
selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
formats.append(selectFmt);
}
layout()->draw(painter, QPointF(0,0), formats, boundingRect());
+
+ // Debuging Stuff
+ // uncomment the following lines to draw the bounding rect and the row number in alternating colors
+// if(row() % 2)
+// painter->setPen(Qt::red);
+// else
+// painter->setPen(Qt::blue);
+// QString rowString = QString::number(row());
+// QRect rowRect = painter->fontMetrics().boundingRect(rowString);
+// QPointF topPoint = _boundingRect.topLeft();
+// topPoint.ry() += rowRect.height();
+// painter->drawText(topPoint, rowString);
+// QPointF bottomPoint = _boundingRect.bottomRight();
+// bottomPoint.rx() -= rowRect.width();
+// painter->drawText(bottomPoint, rowString);
+// painter->drawRect(_boundingRect.adjusted(0, 0, -1, -1));
}
qint16 ChatItem::posToCursor(const QPointF &pos) {
if(pos.y() > height()) return data(MessageModel::DisplayRole).toString().length();
if(pos.y() < 0) return 0;
- if(!haveLayout()) updateLayout();
+ if(!hasLayout())
+ updateLayout();
for(int l = layout()->lineCount() - 1; l >= 0; l--) {
QTextLine line = layout()->lineAt(l);
if(pos.y() >= line.y()) {
searchIdx = plainText.indexOf(searchWord, searchIdx + 1, caseSensitive);
}
- if(!haveLayout())
+ bool hadLayout = hasLayout();
+ if(!hadLayout)
updateLayout();
foreach(int idx, indexList) {
QTextLine line = layout()->lineForTextPosition(idx);
qreal x = line.cursorToX(idx);
qreal width = line.cursorToX(idx + searchWord.count()) - x;
- qreal height = fontMetrics()->lineSpacing();
+ qreal height = line.height();
qreal y = height * line.lineNumber();
resultList << QRectF(x, y, width, height);
}
+
+ if(!hadLayout)
+ clearLayout();
return resultList;
}
}
}
-/*************************************************************************************************/
+// ************************************************************
+// SenderChatItem
+// ************************************************************
-/*************************************************************************************************/
-
-void SenderChatItem::updateLayout() {
- if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere, Qt::AlignRight));
- ChatItem::updateLayout();
-}
-
-/*************************************************************************************************/
-
-ContentsChatItem::ContentsChatItem(QAbstractItemModel *model, QGraphicsItem *parent) : ChatItem(column(), model, parent),
- _layoutData(0)
+// ************************************************************
+// ContentsChatItem
+// ************************************************************
+ContentsChatItem::ContentsChatItem(const qreal &width, const QPointF &pos, QGraphicsItem *parent)
+ : ChatItem(0, 0, pos, parent)
{
+ const QAbstractItemModel *model_ = model();
+ QModelIndex index = model_->index(row(), column());
+ _fontMetrics = QtUi::style()->fontMetrics(model_->data(index, ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
+ setGeometryByWidth(width);
}
-ContentsChatItem::~ContentsChatItem() {
- delete _layoutData;
-}
-
-qreal ContentsChatItem::computeHeight() {
- int lines = 1;
- WrapColumnFinder finder(this);
- while(finder.nextWrapColumn() > 0) lines++;
- return lines * fontMetrics()->lineSpacing();
-}
-
-void ContentsChatItem::setLayout(QTextLayout *layout) {
- if(!_layoutData)
- _layoutData = new LayoutData;
- _layoutData->layout = layout;
-}
-
-void ContentsChatItem::clearLayout() {
- delete _layoutData;
- _layoutData = 0;
+qreal ContentsChatItem::setGeometryByWidth(qreal w) {
+ if(w != width()) {
+ setWidth(w);
+ // compute height
+ int lines = 1;
+ WrapColumnFinder finder(this);
+ while(finder.nextWrapColumn() > 0)
+ lines++;
+ setHeight(lines * fontMetrics()->lineSpacing());
+ }
+ return height();
}
void ContentsChatItem::updateLayout() {
- if(!haveLayout()) setLayout(createLayout(QTextOption::WrapAnywhere));
+ if(!privateData()) {
+ ContentsChatItemPrivate *data = new ContentsChatItemPrivate(createLayout(QTextOption::WrapAnywhere), findClickables(), this);
+ setPrivateData(data);
+ }
// Now layout
ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
int col = finder.nextWrapColumn();
line.setNumColumns(col >= 0 ? col - line.textStart() : layout()->text().length());
line.setPosition(QPointF(0, h));
- h += line.height() + fontMetrics()->leading();
+ h += fontMetrics()->lineSpacing();
}
layout()->endLayout();
}
-void ContentsChatItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
- // FIXME dirty and fast hack to make http:// urls klickable
+// NOTE: This method is not threadsafe and not reentrant!
+// (RegExps are not constant while matching, and they are static here for efficiency)
+QList<ContentsChatItem::Clickable> ContentsChatItem::findClickables() {
+ // For matching URLs
+ static QString urlEnd("(?:>|[,.;:\"]*\\s|\\b|$)");
+ static QString urlChars("(?:[\\w\\-~@/?&=+$()!%#]|[,.;:]\\w)");
+
+ static QRegExp regExp[] = {
+ // URL
+ // QRegExp(QString("((?:https?://|s?ftp://|irc://|mailto:|www\\.)%1+|%1+\\.[a-z]{2,4}(?:?=/%1+|\\b))%2").arg(urlChars, urlEnd)),
+ QRegExp(QString("((?:(?:https?://|s?ftp://|irc://|mailto:)|www)%1+)%2").arg(urlChars, urlEnd)),
+
+ // Channel name
+ // We don't match for channel names starting with + or &, because that gives us a lot of false positives.
+ QRegExp("((?:#|![A-Z0-9]{5})[^,:\\s]+(?::[^,:\\s]+)?)\\b")
+
+ // TODO: Nicks, we'll need a filtering for only matching known nicknames further down if we do this
+ };
+
+ static const int regExpCount = 2; // number of regexps in the array above
+
+ qint16 matches[] = { 0, 0, 0 };
+ qint16 matchEnd[] = { 0, 0, 0 };
- QRegExp regex("\\b([hf]t{1,2}ps?://[^\\s]+)\\b");
QString str = data(ChatLineModel::DisplayRole).toString();
- int idx = posToCursor(event->pos());
- int mi = 0;
+
+ QList<Clickable> result;
+ qint16 idx = 0;
+ qint16 minidx;
+ int type = -1;
+
do {
- mi = regex.indexIn(str, mi);
- if(mi < 0) break;
- if(idx >= mi && idx < mi + regex.matchedLength()) {
- QDesktopServices::openUrl(QUrl(regex.capturedTexts()[1]));
- break;
+ type = -1;
+ minidx = str.length();
+ for(int i = 0; i < regExpCount; i++) {
+ if(matches[i] < 0 || matchEnd[i] > str.length()) continue;
+ if(idx >= matchEnd[i]) {
+ matches[i] = str.indexOf(regExp[i], qMax(matchEnd[i], idx));
+ if(matches[i] >= 0) matchEnd[i] = matches[i] + regExp[i].cap(1).length();
+ }
+ if(matches[i] >= 0 && matches[i] < minidx) {
+ minidx = matches[i];
+ type = i;
+ }
}
- mi += regex.matchedLength();
- } while(mi >= 0);
- event->accept();
+ if(type >= 0) {
+ idx = matchEnd[type];
+ if(type == Clickable::Url && str.at(idx-1) == ')') { // special case: closing paren only matches if we had an open one
+ if(!str.mid(matches[type], matchEnd[type]-matches[type]).contains('(')) matchEnd[type]--;
+ }
+ result.append(Clickable((Clickable::Type)type, matches[type], matchEnd[type] - matches[type]));
+ }
+ } while(type >= 0);
+
+ /* testing
+ if(!result.isEmpty()) qDebug() << str;
+ foreach(Clickable click, result) {
+ qDebug() << str.mid(click.start, click.length);
+ }
+ */
+ return result;
}
-void ContentsChatItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) {
- //qDebug() << (void*)this << "entering";
- event->ignore();
+QVector<QTextLayout::FormatRange> ContentsChatItem::additionalFormats() const {
+ // mark a clickable if hovered upon
+ QVector<QTextLayout::FormatRange> fmt;
+ if(privateData()->currentClickable.isValid()) {
+ Clickable click = privateData()->currentClickable;
+ QTextLayout::FormatRange f;
+ f.start = click.start;
+ f.length = click.length;
+ f.format.setFontUnderline(true);
+ fmt.append(f);
+ }
+ return fmt;
+}
+
+void ContentsChatItem::endHoverMode() {
+ if(hasLayout() && privateData()->currentClickable.isValid()) {
+ setCursor(Qt::ArrowCursor);
+ privateData()->currentClickable = Clickable();
+#ifdef HAVE_WEBKIT
+ privateData()->clearPreview();
+#endif
+ update();
+ }
+}
+
+void ContentsChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+ privateData()->hasDragged = false;
+ ChatItem::mousePressEvent(event);
+}
+
+void ContentsChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+ if(!event->buttons() && !privateData()->hasDragged) {
+ // got a click
+ Clickable click = privateData()->currentClickable;
+ if(click.isValid()) {
+ QString str = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
+ switch(click.type) {
+ case Clickable::Url:
+ if(!str.contains("://"))
+ str = "http://" + str;
+ QDesktopServices::openUrl(str);
+ break;
+ case Clickable::Channel:
+ // TODO join or whatever...
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ ChatItem::mouseReleaseEvent(event);
+}
+
+void ContentsChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+ // mouse move events always mean we're not hovering anymore...
+ endHoverMode();
+ // also, check if we have dragged the mouse
+ if(hasLayout() && !privateData()->hasDragged && event->buttons() & Qt::LeftButton
+ && (event->buttonDownScreenPos(Qt::LeftButton) - event->screenPos()).manhattanLength() >= QApplication::startDragDistance())
+ privateData()->hasDragged = true;
+ ChatItem::mouseMoveEvent(event);
}
void ContentsChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
- //qDebug() << (void*)this << "leaving";
- event->ignore();
+ endHoverMode();
+ event->accept();
}
void ContentsChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
- //qDebug() << (void*)this << event->pos();
- event->ignore();
+ bool onClickable = false;
+ qint16 idx = posToCursor(event->pos());
+ for(int i = 0; i < privateData()->clickables.count(); i++) {
+ Clickable click = privateData()->clickables.at(i);
+ if(idx >= click.start && idx < click.start + click.length) {
+ if(click.type == Clickable::Url) {
+ onClickable = true;
+
+ if(!hasLayout())
+ updateLayout();
+
+#ifdef HAVE_WEBKIT
+ QTextLine line = layout()->lineForTextPosition(click.start);
+ qreal x = line.cursorToX(click.start);
+ qreal width = line.cursorToX(click.start + click.length) - x;
+ qreal height = line.height();
+ qreal y = height * line.lineNumber();
+ QRectF urlRect(x, y, width, height);
+ QString url = data(ChatLineModel::DisplayRole).toString().mid(click.start, click.length);
+ if(!url.contains("://"))
+ url = "http://" + url;
+ privateData()->loadWebPreview(url, urlRect);
+#endif
+ } else if(click.type == Clickable::Channel) {
+ // TODO: don't make clickable if it's our own name
+ //onClickable = true; //FIXME disabled for now
+ }
+ if(onClickable) {
+ setCursor(Qt::PointingHandCursor);
+ privateData()->currentClickable = click;
+ update();
+ break;
+ }
+ }
+ }
+ if(!onClickable) endHoverMode();
+ event->accept();
+}
+
+// ****************************************
+// ContentsChatItemPrivate
+// ****************************************
+ContentsChatItemPrivate::~ContentsChatItemPrivate() {
+#ifdef HAVE_WEBKIT
+ clearPreview();
+#endif
+}
+
+#ifdef HAVE_WEBKIT
+void ContentsChatItemPrivate::loadWebPreview(const QString &url, const QRectF &urlRect) {
+ if(!controller)
+ controller = new PreviewController(contentsItem);
+ controller->loadPage(url, urlRect);
}
+void ContentsChatItemPrivate::clearPreview() {
+ delete controller;
+ controller = 0;
+}
+
+ContentsChatItemPrivate::PreviewController::~PreviewController() {
+ if(previewItem) {
+ contentsItem->scene()->removeItem(previewItem);
+ delete previewItem;
+ }
+}
+
+void ContentsChatItemPrivate::PreviewController::loadPage(const QString &newUrl, const QRectF &urlRect) {
+ if(newUrl.isEmpty() || newUrl == url)
+ return;
+
+ url = newUrl;
+ QWebView *view = new QWebView;
+ connect(view, SIGNAL(loadFinished(bool)), this, SLOT(pageLoaded(bool)));
+ view->load(url);
+ previewItem = new ContentsChatItemPrivate::PreviewItem(view);
+
+ QPointF sPos = contentsItem->scenePos();
+ qreal previewY = sPos.y() + urlRect.y() + urlRect.height(); // bottom of url;
+ qreal previewX = sPos.x() + urlRect.x();
+ if(previewY + previewItem->boundingRect().height() > contentsItem->scene()->sceneRect().bottom())
+ previewY = sPos.y() + urlRect.y() - previewItem->boundingRect().height();
+
+ if(previewX + previewItem->boundingRect().width() > contentsItem->scene()->sceneRect().width())
+ previewX = contentsItem->scene()->sceneRect().right() - previewItem->boundingRect().width();
+
+ previewItem->setPos(previewX, previewY);
+ contentsItem->scene()->addItem(previewItem);
+}
+
+void ContentsChatItemPrivate::PreviewController::pageLoaded(bool success) {
+ Q_UNUSED(success)
+}
+
+ContentsChatItemPrivate::PreviewItem::PreviewItem(QWebView *webView)
+ : QGraphicsItem(0), // needs to be a top level item as we otherwise cannot guarantee that it's on top of other chatlines
+ _boundingRect(0, 0, 400, 300)
+{
+ qreal frameWidth = 5;
+ webView->resize(1000, 750);
+ QGraphicsProxyWidget *proxyItem = new QGraphicsProxyWidget(this);
+ proxyItem->setWidget(webView);
+ proxyItem->setAcceptHoverEvents(false);
+
+ qreal xScale = (_boundingRect.width() - 2 * frameWidth) / webView->width();
+ qreal yScale = (_boundingRect.height() - 2 * frameWidth) / webView->height();
+ proxyItem->scale(xScale, yScale);
+ proxyItem->setPos(frameWidth, frameWidth);
+
+ setZValue(30);
+}
+
+void ContentsChatItemPrivate::PreviewItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+ Q_UNUSED(option); Q_UNUSED(widget);
+ painter->setClipRect(boundingRect());
+ painter->setPen(QPen(Qt::black, 5));
+ painter->setBrush(Qt::black);
+ painter->setRenderHints(QPainter::Antialiasing);
+ painter->drawRoundedRect(boundingRect(), 10, 10);
+
+ painter->setPen(QPen(Qt::green));
+ QString text = QString::number(zValue());
+ painter->drawText(_boundingRect.center(), text);
+}
+#endif // #ifdef HAVE_WEBKIT
+
/*************************************************************************************************/
-ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
- wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
- wordidx = 0;
- layout = 0;
- lastwrapcol = 0;
- lastwrappos = 0;
- w = 0;
+ContentsChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item)
+ : item(_item),
+ layout(0),
+ wrapList(item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>()),
+ wordidx(0),
+ lineCount(0),
+ choppedTrailing(0)
+{
}
ContentsChatItem::WrapColumnFinder::~WrapColumnFinder() {
}
qint16 ContentsChatItem::WrapColumnFinder::nextWrapColumn() {
- while(wordidx < wrapList.count()) {
- w += wrapList.at(wordidx).width;
- if(w >= item->width()) {
- if(lastwrapcol >= wrapList.at(wordidx).start) {
- // first word, and it doesn't fit
- if(!line.isValid()) {
- layout = item->createLayout(QTextOption::NoWrap);
- layout->beginLayout();
- line = layout->createLine();
- line.setLineWidth(item->width());
- layout->endLayout();
- }
- int idx = line.xToCursor(lastwrappos + item->width(), QTextLine::CursorOnCharacter);
- qreal x = line.cursorToX(idx, QTextLine::Trailing);
- w = w - wrapList.at(wordidx).width - (x - lastwrappos);
- lastwrappos = x;
- lastwrapcol = idx;
- return idx;
- }
- // not the first word, so just wrap before this
- lastwrapcol = wrapList.at(wordidx).start;
- lastwrappos = lastwrappos + w - wrapList.at(wordidx).width;
- w = 0;
- return lastwrapcol;
+ if(wordidx >= wrapList.count())
+ return -1;
+
+ lineCount++;
+ qreal targetWidth = lineCount * item->width() + choppedTrailing;
+
+ qint16 start = wordidx;
+ qint16 end = wrapList.count() - 1;
+
+ // check if the whole line fits
+ if(wrapList.at(end).endX <= targetWidth) // || start == end)
+ return -1;
+
+ // check if we have a very long word that needs inter word wrap
+ if(wrapList.at(start).endX > targetWidth) {
+ if(!line.isValid()) {
+ layout = item->createLayout(QTextOption::NoWrap);
+ layout->beginLayout();
+ line = layout->createLine();
+ layout->endLayout();
+ }
+ return line.xToCursor(targetWidth, QTextLine::CursorOnCharacter);
+ }
+
+ while(true) {
+ if(start + 1 == end) {
+ wordidx = end;
+ const ChatLineModel::Word &lastWord = wrapList.at(start); // the last word we were able to squeeze in
+
+ // both cases should be cought preliminary
+ Q_ASSERT(lastWord.endX <= targetWidth); // ensure that "start" really fits in
+ Q_ASSERT(end < wrapList.count()); // ensure that start isn't the last word
+
+ choppedTrailing += lastWord.trailing - (targetWidth - lastWord.endX);
+ return wrapList.at(wordidx).start;
+ }
+
+ qint16 pivot = (end + start) / 2;
+ if(wrapList.at(pivot).endX > targetWidth) {
+ end = pivot;
+ } else {
+ start = pivot;
}
- w += wrapList.at(wordidx).trailing;
- wordidx++;
}
+ Q_ASSERT(false);
return -1;
}
+
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