--- /dev/null
+/***************************************************************************
+ * Copyright (C) 2005-07 by The Quassel Team *
+ * devel@quassel-irc.org *
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * This program 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 General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the *
+ * Free Software Foundation, Inc., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ ***************************************************************************/
+
+#include "util.h"
+#include "style.h"
+#include "chatwidget.h"
+#include "chatline.h"
+
+
+ChatWidget::ChatWidget(QWidget *parent) : QAbstractScrollArea(parent) {
+ //setAutoFillBackground(false);
+ //QPalette palette;
+ //palette.setColor(backgroundRole(), QColor(0, 0, 0, 50));
+ //setPalette(palette);
+ scrollTimer = new QTimer(this);
+ scrollTimer->setSingleShot(false);
+ scrollTimer->setInterval(100);
+ setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
+ setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+ setMinimumSize(QSize(400,400));
+ setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
+ bottomLine = -1;
+ height = 0;
+ ycoords.append(0);
+ pointerPosition = QPoint(0,0);
+ connect(verticalScrollBar(), SIGNAL(actionTriggered(int)), this, SLOT(scrollBarAction(int)));
+ connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(scrollBarValChanged(int)));
+}
+
+void ChatWidget::init(QString netname, QString bufname) {
+ networkName = netname;
+ bufferName = bufname;
+ setBackgroundRole(QPalette::Base);
+ setFont(QFont("Fixed"));
+ tsWidth = 90;
+ senderWidth = 100;
+ computePositions();
+ adjustScrollBar();
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ //verticalScrollBar()->setPageStep(viewport()->height());
+ //verticalScrollBar()->setSingleStep(20);
+ //verticalScrollBar()->setMinimum(0);
+ //verticalScrollBar()->setMaximum((int)height - verticalScrollBar()->pageStep());
+
+ setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+ setMouseTracking(true);
+ mouseMode = Normal;
+ selectionMode = NoSelection;
+ connect(scrollTimer, SIGNAL(timeout()), this, SLOT(handleScrollTimer()));
+}
+
+ChatWidget::~ChatWidget() {
+ //qDebug() << "destroying chatwidget" << bufferName;
+ //foreach(ChatLine *l, lines) {
+ // delete l;
+ //}
+}
+
+QSize ChatWidget::sizeHint() const {
+ //qDebug() << size();
+ return size();
+}
+
+void ChatWidget::adjustScrollBar() {
+ verticalScrollBar()->setPageStep(viewport()->height());
+ verticalScrollBar()->setSingleStep(20);
+ verticalScrollBar()->setMinimum(0);
+ verticalScrollBar()->setMaximum((int)height - verticalScrollBar()->pageStep());
+ //qDebug() << height << viewport()->height() << verticalScrollBar()->pageStep();
+ //if(bottomLine < 0) {
+ // verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ //} else {
+ //int bot = verticalScrollBar()->value() + viewport()->height(); //qDebug() << bottomLine;
+ //verticalScrollBar()->setValue(qMax(0, (int)ycoords[bottomLine+1] - viewport()->height()));
+ //}
+}
+
+void ChatWidget::scrollBarValChanged(int /*val*/) {
+ /*
+ if(val >= verticalScrollBar()->maximum()) bottomLine = -1;
+ else {
+ int bot = val + viewport()->height();
+ int line = yToLineIdx(bot);
+ //bottomLine = line;
+ }
+ */
+}
+
+void ChatWidget::scrollBarAction(int action) {
+ switch(action) {
+ case QScrollBar::SliderSingleStepAdd:
+ // More elaborate. But what with loooong lines?
+ // verticalScrollBar()->setValue((int)ycoords[yToLineIdx(verticalScrollBar()->value() + viewport()->height()) + 1] - viewport()->height());
+ break;
+ case QScrollBar::SliderSingleStepSub:
+ //verticalScrollBar()->setValue((int)ycoords[yToLineIdx(verticalScrollBar()->value())]);
+ break;
+
+ }
+
+}
+
+void ChatWidget::handleScrollTimer() {
+ if(mouseMode == MarkText || mouseMode == MarkLines) {
+ if(pointerPosition.y() > viewport()->height()) {
+ verticalScrollBar()->setValue(verticalScrollBar()->value() + pointerPosition.y() - viewport()->height());
+ handleMouseMoveEvent(QPoint(pointerPosition.x(), viewport()->height()));
+ } else if(pointerPosition.y() < 0) {
+ verticalScrollBar()->setValue(verticalScrollBar()->value() + pointerPosition.y());
+ handleMouseMoveEvent(QPoint(pointerPosition.x(), 0));
+ }
+ }
+}
+
+void ChatWidget::ensureVisible(int line) {
+ int top = verticalScrollBar()->value();
+ int bot = top + viewport()->height();
+ if(ycoords[line+1] > bot) {
+ verticalScrollBar()->setValue(qMax(0, (int)ycoords[line+1] - viewport()->height()));
+ } else if(ycoords[line] < top) {
+ verticalScrollBar()->setValue((int)ycoords[line]);
+ }
+
+}
+
+void ChatWidget::clear() {
+ //contents->clear();
+}
+
+void ChatWidget::prependMsg(AbstractUiMsg *msg) {
+ ChatLine *line = dynamic_cast<ChatLine*>(msg);
+ Q_ASSERT(line);
+ prependChatLine(line);
+}
+
+void ChatWidget::prependChatLine(ChatLine *line) {
+ qreal h = line->layout(tsWidth, senderWidth, textWidth);
+ for(int i = 1; i < ycoords.count(); i++) ycoords[i] += h;
+ ycoords.insert(1, h);
+ lines.prepend(line);
+ height += h;
+ // Fix all variables containing line numbers
+ dragStartLine ++;
+ curLine ++;
+ selectionStart ++; selectionEnd ++;
+ adjustScrollBar();
+ verticalScrollBar()->setValue(verticalScrollBar()->value() + (int)h);
+ viewport()->update();
+}
+
+void ChatWidget::prependChatLines(QList<ChatLine *> clist) {
+ QList<qreal> tmpy; tmpy.append(0);
+ qreal h = 0;
+ foreach(ChatLine *l, clist) {
+ h += l->layout(tsWidth, senderWidth, textWidth);
+ tmpy.append(h);
+ }
+ ycoords.removeFirst();
+ for(int i = 0; i < ycoords.count(); i++) ycoords[i] += h;
+ ycoords = tmpy + ycoords;
+ lines = clist + lines;
+ height += h;
+ // Fix all variables containing line numbers
+ int i = clist.count();
+ dragStartLine += i;
+ curLine += i;
+ selectionStart += i; selectionEnd += i; //? selectionEnd += i;
+ //if(bottomLine >= 0) bottomLine += i;
+ adjustScrollBar();
+ //verticalScrollBar()->setPageStep(viewport()->height());
+ //verticalScrollBar()->setSingleStep(20);
+ //verticalScrollBar()->setMaximum((int)height - verticalScrollBar()->pageStep());
+ verticalScrollBar()->setValue(verticalScrollBar()->value() + (int)h);
+ viewport()->update();
+}
+
+void ChatWidget::appendMsg(AbstractUiMsg *msg) {
+ ChatLine *line = dynamic_cast<ChatLine*>(msg);
+ Q_ASSERT(line);
+ appendChatLine(line);
+}
+
+void ChatWidget::appendChatLine(ChatLine *line) {
+ qreal h = line->layout(tsWidth, senderWidth, textWidth);
+ ycoords.append(h + ycoords[ycoords.count() - 1]);
+ height += h;
+ bool flg = (verticalScrollBar()->value() == verticalScrollBar()->maximum());
+ adjustScrollBar();
+ if(flg) verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ lines.append(line);
+ viewport()->update();
+}
+
+
+void ChatWidget::appendChatLines(QList<ChatLine *> list) {
+ foreach(ChatLine *line, list) {
+ qreal h = line->layout(tsWidth, senderWidth, textWidth);
+ ycoords.append(h + ycoords[ycoords.count() - 1]);
+ height += h;
+ lines.append(line);
+ }
+ bool flg = (verticalScrollBar()->value() == verticalScrollBar()->maximum());
+ adjustScrollBar();
+ if(flg) verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ viewport()->update();
+}
+
+void ChatWidget::setContents(QList<ChatLine *> list) {
+ ycoords.clear();
+ ycoords.append(0);
+ height = 0;
+ lines.clear();
+ appendChatLines(list);
+}
+
+//!\brief Computes the different x position vars for given tsWidth and senderWidth.
+void ChatWidget::computePositions() {
+ senderX = tsWidth + Style::sepTsSender();
+ textX = senderX + senderWidth + Style::sepSenderText();
+ tsGrabPos = tsWidth + (int)Style::sepTsSender()/2;
+ senderGrabPos = senderX + senderWidth + (int)Style::sepSenderText()/2;
+ textWidth = viewport()->size().width() - textX;
+}
+
+void ChatWidget::resizeEvent(QResizeEvent *event) {
+ //qDebug() << bufferName << isVisible() << event->size() << event->oldSize();
+ /*if(event->oldSize().isValid())*/
+ //contents->setWidth(event->size().width());
+ //setAlignment(Qt::AlignBottom);
+ if(event->size().width() != event->oldSize().width()) {
+ computePositions();
+ layout();
+ }
+ //adjustScrollBar();
+ //qDebug() << viewport()->size() << viewport()->height();
+ //QAbstractScrollArea::resizeEvent(event);
+ //qDebug() << viewport()->size() << viewport()->geometry();
+}
+
+void ChatWidget::paintEvent(QPaintEvent *event) {
+ QPainter painter(viewport());
+
+ //qDebug() << verticalScrollBar()->value();
+ painter.translate(0, -verticalScrollBar()->value());
+ int top = event->rect().top() + verticalScrollBar()->value();
+ int bot = top + event->rect().height();
+ int idx = yToLineIdx(top);
+ if(idx < 0) return;
+ for(int i = idx; i < lines.count() ; i++) {
+ lines[i]->draw(&painter, QPointF(0, ycoords[i]));
+ if(ycoords[i+1] > bot) return;
+ }
+}
+
+//!\brief Layout the widget.
+void ChatWidget::layout() {
+ // TODO fix scrollbars
+ //int botLine = yToLineIdx(verticalScrollBar()->value() +
+ for(int i = 0; i < lines.count(); i++) {
+ qreal h = lines[i]->layout(tsWidth, senderWidth, textWidth);
+ ycoords[i+1] = h + ycoords[i];
+ }
+ height = ycoords[ycoords.count()-1];
+ adjustScrollBar();
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ viewport()->update();
+}
+
+int ChatWidget::yToLineIdx(qreal y) {
+ if(y >= ycoords[ycoords.count()-1]) return ycoords.count()-2;
+ if(ycoords.count() <= 1) return 0;
+ int uidx = 0;
+ int oidx = ycoords.count() - 1;
+ int idx;
+ while(1) {
+ if(uidx == oidx - 1) return uidx;
+ idx = (uidx + oidx) / 2;
+ if(ycoords[idx] > y) oidx = idx;
+ else uidx = idx;
+ }
+}
+
+void ChatWidget::mousePressEvent(QMouseEvent *event) {
+ if(lines.isEmpty()) return;
+ QPoint pos = event->pos() + QPoint(0, verticalScrollBar()->value());
+ if(event->button() == Qt::LeftButton) {
+ dragStartPos = pos;
+ dragStartMode = Normal;
+ switch(mouseMode) {
+ case Normal:
+ if(mousePos == OverTsSep) {
+ dragStartMode = DragTsSep;
+ setCursor(Qt::ClosedHandCursor);
+ } else if(mousePos == OverTextSep) {
+ dragStartMode = DragTextSep;
+ setCursor(Qt::ClosedHandCursor);
+ } else {
+ dragStartLine = yToLineIdx(pos.y());
+ dragStartCursor = lines[dragStartLine]->posToCursor(QPointF(pos.x(), pos.y()-ycoords[dragStartLine]));
+ }
+ mouseMode = Pressed;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+void ChatWidget::mouseDoubleClickEvent(QMouseEvent * /*event*/) {
+
+
+
+}
+
+void ChatWidget::mouseReleaseEvent(QMouseEvent *event) {
+ //QPoint pos = event->pos() + QPoint(0, verticalScrollBar()->value());
+
+ if(event->button() == Qt::LeftButton) {
+ dragStartPos = QPoint();
+ if(mousePos == OverTsSep || mousePos == OverTextSep) setCursor(Qt::OpenHandCursor);
+ else setCursor(Qt::ArrowCursor);
+
+ switch(mouseMode) {
+ case Pressed:
+ mouseMode = Normal;
+ clearSelection();
+ break;
+ case MarkText:
+ mouseMode = Normal;
+ selectionMode = TextSelected;
+ selectionLine = dragStartLine;
+ selectionStart = qMin(dragStartCursor, curCursor);
+ selectionEnd = qMax(dragStartCursor, curCursor);
+ // TODO Make X11SelectionMode configurable!
+ QApplication::clipboard()->setText(selectionToString());
+ break;
+ case MarkLines:
+ mouseMode = Normal;
+ selectionMode = LinesSelected;
+ selectionStart = qMin(dragStartLine, curLine);
+ selectionEnd = qMax(dragStartLine, curLine);
+ // TODO Make X11SelectionMode configurable!
+ QApplication::clipboard()->setText(selectionToString());
+ break;
+ default:
+ mouseMode = Normal;
+ }
+ }
+}
+
+//!\brief React to mouse movements over the ChatWidget.
+/** This is called by Qt whenever the mouse moves. Here we have to do most of the mouse handling,
+ * such as changing column widths, marking text or initiating drag & drop.
+ */
+void ChatWidget::mouseMoveEvent(QMouseEvent *event) {
+ QPoint pos = event->pos(); pointerPosition = pos;
+ // Scroll if mouse pointer leaves widget while dragging
+ if((mouseMode == MarkText || mouseMode == MarkLines) && (pos.y() > viewport()->height() || pos.y() < 0)) {
+ if(!scrollTimer->isActive()) {
+ scrollTimer->start();
+ }
+ } else {
+ if(scrollTimer->isActive()) {
+ scrollTimer->stop();
+ }
+ }
+ handleMouseMoveEvent(pos);
+}
+
+void ChatWidget::handleMouseMoveEvent(const QPoint &_pos) {
+ // FIXME
+ if(lines.count() <= 0) return;
+ // Set some basic properties of the current position
+ QPoint pos = _pos + QPoint(0, verticalScrollBar()->value());
+ int x = pos.x();
+ int y = pos.y();
+ //MousePos oldpos = mousePos;
+ if(x >= tsGrabPos - 3 && x <= tsGrabPos + 3) mousePos = OverTsSep;
+ else if(x >= senderGrabPos - 3 && x <= senderGrabPos + 3) mousePos = OverTextSep;
+ else mousePos = None;
+
+ // Pass 1: Do whatever we can before switching mouse mode (if at all).
+ switch(mouseMode) {
+ // No special mode. Set mouse cursor if appropriate.
+ case Normal:
+ {
+ //if(oldpos != mousePos) {
+ if(mousePos == OverTsSep || mousePos == OverTextSep) setCursor(Qt::OpenHandCursor);
+ else {
+ int l = yToLineIdx(y);
+ int c = lines[l]->posToCursor(QPointF(x, y - ycoords[l]));
+ if(c >= 0 && lines[l]->isUrl(c)) {
+ setCursor(Qt::PointingHandCursor);
+ } else {
+ setCursor(Qt::ArrowCursor);
+ }
+ }
+ }
+ break;
+ // Left button pressed. Might initiate marking or drag & drop if we moved past the drag distance.
+ case Pressed:
+ if(!dragStartPos.isNull() && (dragStartPos - pos).manhattanLength() >= QApplication::startDragDistance()) {
+ // Moving a column separator?
+ if(dragStartMode == DragTsSep) mouseMode = DragTsSep;
+ else if(dragStartMode == DragTextSep) mouseMode = DragTextSep;
+ // Nope. Check if we are over a selection to start drag & drop.
+ else if(dragStartMode == Normal) {
+ bool dragdrop = false;
+ if(selectionMode == TextSelected) {
+ int l = yToLineIdx(y);
+ if(selectionLine == l) {
+ int p = lines[l]->posToCursor(QPointF(x, y - ycoords[l]));
+ if(p >= selectionStart && p <= selectionEnd) dragdrop = true;
+ }
+ } else if(selectionMode == LinesSelected) {
+ int l = yToLineIdx(y);
+ if(l >= selectionStart && l <= selectionEnd) dragdrop = true;
+ }
+ // Ok, so just start drag & drop if appropriate.
+ if(dragdrop) {
+ QDrag *drag = new QDrag(this);
+ QMimeData *mimeData = new QMimeData;
+ mimeData->setText(selectionToString());
+ drag->setMimeData(mimeData);
+ drag->start();
+ mouseMode = Normal;
+ // Otherwise, clear the selection and start text marking!
+ } else {
+ setCursor(Qt::ArrowCursor);
+ clearSelection();
+ if(dragStartCursor < 0) { mouseMode = MarkLines; curLine = -1; }
+ else mouseMode = MarkText;
+ }
+ }
+ }
+ break;
+ case DragTsSep:
+ break;
+ case DragTextSep:
+ break;
+ default:
+ break;
+ }
+ // Pass 2: Some mouse modes need work after being set...
+ if(mouseMode == DragTsSep && x < size().width() - Style::sepSenderText() - senderWidth - 10) {
+ // Drag first column separator
+ int foo = Style::sepTsSender()/2;
+ tsWidth = qMax(x, foo) - foo;
+ computePositions();
+ layout();
+ } else if(mouseMode == DragTextSep && x < size().width() - 10) {
+ // Drag second column separator
+ int foo = tsWidth + Style::sepTsSender() + Style::sepSenderText()/2;
+ senderWidth = qMax(x, foo) - foo;
+ computePositions();
+ layout();
+ } else if(mouseMode == MarkText) {
+ // Change currently marked text
+ curLine = yToLineIdx(y);
+ int c = lines[curLine]->posToCursor(QPointF(x, y - ycoords[curLine]));
+ if(curLine == dragStartLine && c >= 0) {
+ if(c != curCursor) {
+ curCursor = c;
+ lines[curLine]->setSelection(ChatLine::Partial, dragStartCursor, c);
+ viewport()->update();
+ }
+ } else {
+ mouseMode = MarkLines;
+ selectionStart = qMin(curLine, dragStartLine); selectionEnd = qMax(curLine, dragStartLine);
+ for(int i = selectionStart; i <= selectionEnd; i++) lines[i]->setSelection(ChatLine::Full);
+ viewport()->update();
+ }
+ } else if(mouseMode == MarkLines) {
+ // Line marking
+ int l = yToLineIdx(y);
+ if(l != curLine) {
+ selectionStart = qMin(l, dragStartLine); selectionEnd = qMax(l, dragStartLine);
+ if(curLine < 0) {
+ Q_ASSERT(selectionStart == selectionEnd);
+ lines[l]->setSelection(ChatLine::Full);
+ } else {
+ if(curLine < selectionStart) {
+ for(int i = curLine; i < selectionStart; i++) lines[i]->setSelection(ChatLine::None);
+ } else if(curLine > selectionEnd) {
+ for(int i = selectionEnd+1; i <= curLine; i++) lines[i]->setSelection(ChatLine::None);
+ } else if(selectionStart < curLine && l < curLine) {
+ for(int i = selectionStart; i < curLine; i++) lines[i]->setSelection(ChatLine::Full);
+ } else if(curLine < selectionEnd && l > curLine) {
+ for(int i = curLine+1; i <= selectionEnd; i++) lines[i]->setSelection(ChatLine::Full);
+ }
+ }
+ curLine = l;
+ //ensureVisible(l);
+ viewport()->update();
+ }
+ }
+}
+
+//!\brief Clear current text selection.
+void ChatWidget::clearSelection() {
+ if(selectionMode == TextSelected) {
+ lines[selectionLine]->setSelection(ChatLine::None);
+ } else if(selectionMode == LinesSelected) {
+ for(int i = selectionStart; i <= selectionEnd; i++) {
+ lines[i]->setSelection(ChatLine::None);
+ }
+ }
+ selectionMode = NoSelection;
+ viewport()->update();
+}
+
+//!\brief Convert current selection to human-readable string.
+QString ChatWidget::selectionToString() {
+ //TODO Make selection format configurable!
+ if(selectionMode == NoSelection) return "";
+ if(selectionMode == LinesSelected) {
+ QString result;
+ for(int l = selectionStart; l <= selectionEnd; l++) {
+ result += QString("[%1] %2 %3\n").arg(lines[l]->timeStamp().toLocalTime().toString("hh:mm:ss"))
+ .arg(lines[l]->sender()).arg(lines[l]->text());
+ }
+ return result;
+ }
+ // selectionMode == TextSelected
+ return lines[selectionLine]->text().mid(selectionStart, selectionEnd - selectionStart);
+}
+
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