* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include <QApplication>
+#include <QClipboard>
#include <QFontMetrics>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
+#include <QPalette>
#include <QTextLayout>
#include "chatitem.h"
_fontMetrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
_layout = 0;
_lines = 0;
+ _selectionStart = -1;
+ _selectionMode = NoSelection;
+ setAcceptHoverEvents(true);
+ setZValue(20);
}
ChatItem::~ChatItem() {
return _index.data(role);
}
-int ChatItem::setWidth(int w) {
- w -= 10;
+qreal ChatItem::setWidth(qreal w) {
if(w == _boundingRect.width()) return _boundingRect.height();
+ prepareGeometryChange();
_boundingRect.setWidth(w);
- int h = heightForWidth(w);
+ qreal h = computeHeight();
_boundingRect.setHeight(h);
if(haveLayout()) updateLayout();
return h;
}
-int ChatItem::heightForWidth(int width) {
+qreal ChatItem::computeHeight() {
if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
return fontMetrics()->lineSpacing(); // only contents can be multi-line
return _lines * fontMetrics()->lineSpacing();
}
+QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode, Qt::Alignment alignment) {
+ QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
+
+ QTextOption option;
+ option.setWrapMode(wrapMode);
+ option.setAlignment(alignment);
+ layout->setTextOption(option);
+
+ QList<QTextLayout::FormatRange> formatRanges
+ = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
+ layout->setAdditionalFormats(formatRanges);
+ return layout;
+}
+
+void ChatItem::updateLayout() {
+ switch(data(ChatLineModel::ColumnTypeRole).toUInt()) {
+ case ChatLineModel::TimestampColumn:
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignLeft);
+ // fallthrough
+ case ChatLineModel::SenderColumn:
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere, Qt::AlignRight);
+ _layout->beginLayout();
+ {
+ QTextLine line = _layout->createLine();
+ if(line.isValid()) {
+ line.setLineWidth(width());
+ line.setPosition(QPointF(0,0));
+ }
+ _layout->endLayout();
+ }
+ break;
+ case ChatLineModel::ContentsColumn: {
+ if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
+
+ // Now layout
+ ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
+ if(!wrapList.count()) return; // empty chatitem
+
+ qreal h = 0;
+ WrapColumnFinder finder(this);
+ _layout->beginLayout();
+ forever {
+ QTextLine line = _layout->createLine();
+ if(!line.isValid())
+ break;
+
+ int col = finder.nextWrapColumn();
+ line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
+ line.setPosition(QPointF(0, h));
+ h += line.height() + fontMetrics()->leading();
+ }
+ _layout->endLayout();
+ }
+ break;
+ }
+}
+
+void ChatItem::clearLayout() {
+ delete _layout;
+ _layout = 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();
+ 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;
+ if(_selectionMode != NoSelection) {
+ QTextLayout::FormatRange selectFmt;
+ selectFmt.format.setForeground(QApplication::palette().brush(QPalette::HighlightedText));
+ selectFmt.format.setBackground(QApplication::palette().brush(QPalette::Highlight));
+ if(_selectionMode == PartialSelection) {
+ selectFmt.start = qMin(_selectionStart, _selectionEnd);
+ selectFmt.length = qAbs(_selectionStart - _selectionEnd);
+ } else { // FullSelection
+ selectFmt.start = 0;
+ selectFmt.length = data(MessageModel::DisplayRole).toString().length();
+ }
+ formats.append(selectFmt);
+ }
+ _layout->draw(painter, QPointF(0,0), formats, boundingRect());
+}
+
+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();
+ for(int l = _layout->lineCount() - 1; l >= 0; l--) {
+ QTextLine line = _layout->lineAt(l);
+ if(pos.y() >= line.y()) {
+ return line.xToCursor(pos.x(), QTextLine::CursorOnCharacter);
+ }
+ }
+ return 0;
+}
+
+void ChatItem::setFullSelection() {
+ if(_selectionMode != FullSelection) {
+ _selectionMode = FullSelection;
+ update();
+ }
+}
+
+void ChatItem::clearSelection() {
+ if(_selectionMode != NoSelection) {
+ _selectionMode = NoSelection;
+ update();
+ }
+}
+
+void ChatItem::continueSelecting(const QPointF &pos) {
+ _selectionMode = PartialSelection;
+ _selectionEnd = posToCursor(pos);
+ update();
+}
+
+void ChatItem::mousePressEvent(QGraphicsSceneMouseEvent *event) {
+ if(event->buttons() & Qt::LeftButton) {
+ if(_selectionMode == NoSelection) {
+ chatScene()->setSelectingItem(this); // removes earlier selection if exists
+ _selectionStart = _selectionEnd = posToCursor(event->pos());
+ _selectionMode = PartialSelection;
+ } else {
+ chatScene()->setSelectingItem(0);
+ _selectionMode = NoSelection;
+ update();
+ }
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+
+void ChatItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
+ if(contains(event->pos())) {
+ qint16 end = posToCursor(event->pos());
+ if(end != _selectionEnd) {
+ _selectionEnd = end;
+ update();
+ }
+ } else {
+ setFullSelection();
+ chatScene()->startGlobalSelection(this, event->pos());
+ }
+}
+
+void ChatItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
+ if(_selectionMode != NoSelection) {
+ _selectionEnd = posToCursor(event->pos());
+ QString selection
+ = data(MessageModel::DisplayRole).toString().mid(qMin(_selectionStart, _selectionEnd), qAbs(_selectionStart - _selectionEnd));
+ QApplication::clipboard()->setText(selection, QClipboard::Clipboard); // TODO configure where selections should go
+ event->accept();
+ } else {
+ event->ignore();
+ }
+}
+
+void ChatItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event) {
+ //qDebug() << (void*)this << "entering";
+
+}
+
+void ChatItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event) {
+ //qDebug() << (void*)this << "leaving";
+
+}
+
+void ChatItem::hoverMoveEvent(QGraphicsSceneHoverEvent *event) {
+ //qDebug() << (void*)this << event->pos();
+
+}
+
+
+/*************************************************************************************************/
+
ChatItem::WrapColumnFinder::WrapColumnFinder(ChatItem *_item) : item(_item) {
wrapList = item->data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
wordidx = 0;
delete layout;
}
-int ChatItem::WrapColumnFinder::nextWrapColumn() {
+qint16 ChatItem::WrapColumnFinder::nextWrapColumn() {
while(wordidx < wrapList.count()) {
w += wrapList.at(wordidx).width;
if(w >= item->width()) {
}
return -1;
}
-
-QTextLayout *ChatItem::createLayout(QTextOption::WrapMode wrapMode) {
- QTextLayout *layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
-
- QTextOption option;
- option.setWrapMode(wrapMode);
- layout->setTextOption(option);
-
- QList<QTextLayout::FormatRange> formatRanges
- = QtUi::style()->toTextLayoutList(data(MessageModel::FormatRole).value<UiStyle::FormatList>(), layout->text().length());
- layout->setAdditionalFormats(formatRanges);
- return layout;
-}
-
-void ChatItem::updateLayout() {
- if(!haveLayout()) _layout = createLayout(QTextOption::WrapAnywhere);
-
- // Now layout
- ChatLineModel::WrapList wrapList = data(ChatLineModel::WrapListRole).value<ChatLineModel::WrapList>();
- if(!wrapList.count()) return; // empty chatitem
- int wordidx = 0;
- ChatLineModel::Word word = wrapList.at(0);
-
- qreal h = 0;
- WrapColumnFinder finder(this);
- _layout->beginLayout();
- forever {
- QTextLine line = _layout->createLine();
- if (!line.isValid())
- break;
-
- int col = finder.nextWrapColumn();
- line.setNumColumns(col >= 0 ? col - line.textStart() : _layout->text().length());
-
- h += fontMetrics()->leading();
- line.setPosition(QPointF(0, h));
- h += line.height();
- }
- _layout->endLayout();
-}
-
-void ChatItem::clearLayout() {
- delete _layout;
- _layout = 0;
-}
-
-//int ChatItem::findNextWrapColumn(
-
-void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
- Q_UNUSED(option); Q_UNUSED(widget);
- if(!haveLayout()) updateLayout();
- _layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
- painter->drawRect(boundingRect());
- int width = 0;
- QVariantList wrapList = data(ChatLineModel::WrapListRole).toList();
- for(int i = 2; i < wrapList.count(); i+=2) {
- QRect r(wrapList[i-1].toUInt(), 0, wrapList[i+1].toUInt() - wrapList[i-1].toUInt(), fontMetrics()->lineSpacing());
- painter->drawRect(r);
- }
-}
-
-/*
-void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
- qDebug() << (void*)this << "moving" << event->pos();
- if(event->pos().y() < 0) {
- QTextCursor cursor(document());
- //cursor.insertText("foo");
- //cursor.select(QTextCursor::Document);
- event->ignore();
- } else QGraphicsTextItem::mouseMoveEvent(event);
-}
-*/
projects / quassel.git / blobdiff