#include <QClipboard>
#include <QGraphicsSceneMouseEvent>
#include <QPersistentModelIndex>
+#include <QWebView>
#include "chatitem.h"
#include "chatline.h"
const qreal minContentsWidth = 200;
+class ChatScene::ClearWebPreviewEvent : public QEvent {
+public:
+ inline ClearWebPreviewEvent() : QEvent((QEvent::Type)ChatScene::ClearWebPreviewEventType) {}
+};
+
ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent)
: QGraphicsScene(0, 0, width, 0, parent),
_idString(idString),
_model(model),
_singleBufferScene(false),
_sceneRect(0, 0, width, 0),
+ _firstLineRow(-1),
_viewportHeight(0),
_selectingItem(0),
_selectionStart(-1),
if(model->rowCount() > 0)
rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
+
+ webPreview.delayTimer.setSingleShot(true);
+ connect(&webPreview.delayTimer, SIGNAL(timeout()), this, SLOT(showWebPreview()));
+ webPreview.deleteTimer.setInterval(600000);
+ connect(&webPreview.deleteTimer, SIGNAL(timeout()), this, SLOT(deleteWebPreview()));
}
ChatScene::~ChatScene() {
void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
Q_UNUSED(index);
-
- clearWebPreview();
+// QModelIndex sidx = model()->index(start, 0);
+// QModelIndex eidx = model()->index(end, 0);
+// qDebug() << "rowsInserted" << start << end << "-" << sidx.data(MessageModel::MsgIdRole).value<MsgId>() << eidx.data(MessageModel::MsgIdRole).value<MsgId>();
qreal h = 0;
qreal y = _sceneRect.y();
bool atBottom = false;
bool moveTop = false;
- if(start > 0) {
- y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
+ if(start > 0 && start < _lines.count()) {
+ y = _lines.value(start)->y();
atTop = false;
}
- if(start == _lines.count())
+ if(start == _lines.count()) {
+ y = _sceneRect.bottom();
+ atTop = false;
atBottom = true;
+ }
qreal contentsWidth = width - secondColumnHandle()->sceneRight();
qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
-
- for(int i = end; i >= start; i--) {
- ChatLine *line = new ChatLine(i, model(),
- width,
- timestampWidth, senderWidth, contentsWidth,
- senderPos, contentsPos);
- if(atTop) {
- h -= line->height();
- line->setPos(0, y+h);
- } else {
+ if(atTop) {
+ for(int i = end; i >= start; i--) {
+ ChatLine *line = new ChatLine(i, model(),
+ width,
+ timestampWidth, senderWidth, contentsWidth,
+ senderPos, contentsPos);
+ h += line->height();
+ line->setPos(0, y-h);
+ _lines.insert(start, line);
+ addItem(line);
+ }
+ } else {
+ for(int i = start; i <= end; i++) {
+ ChatLine *line = new ChatLine(i, model(),
+ width,
+ timestampWidth, senderWidth, contentsWidth,
+ senderPos, contentsPos);
line->setPos(0, y+h);
h += line->height();
+ _lines.insert(i, line);
+ addItem(line);
}
- _lines.insert(start, line);
- addItem(line);
}
// update existing items
qreal offset = h;
int moveStart = 0;
int moveEnd = _lines.count() - 1;
- ChatLine *line = 0;
- if(end > _lines.count() - end) {
+ // move top means: moving 0 to end (aka: end + 1)
+ // move top means: moving end + 1 to _lines.count() - 1 (aka: _lines.count() - (end + 1)
+ if(end + 1 < _lines.count() - end - 1) {
// move top part
moveTop = true;
offset = -offset;
moveEnd = end;
} else {
// move bottom part
- moveStart = start;
+ moveStart = end + 1;
}
+ ChatLine *line = 0;
for(int i = moveStart; i <= moveEnd; i++) {
line = _lines.at(i);
line->setPos(0, line->pos().y() + offset);
}
}
- // update sceneRect
- if(atTop || moveTop) {
- updateSceneRect(_sceneRect.adjusted(0, h, 0, 0));
- } else {
- updateSceneRect(_sceneRect.adjusted(0, 0, 0, h));
- emit lastLineChanged(_lines.last());
- }
+ // check if all went right
+ Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
+ Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
+ if(!atBottom) {
+ if(start < _firstLineRow) {
+ int prevFirstLineRow = _firstLineRow + (end - start + 1);
+ for(int i = end + 1; i < prevFirstLineRow; i++) {
+ _lines.at(i)->show();
+ }
+ }
+ // force new search for first proper line
+ _firstLineRow = -1;
+ }
+ updateSceneRect();
+ if(atBottom || (!atTop && !moveTop)) {
+ emit lastLineChanged(_lines.last(), h);
+ }
}
void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
Q_UNUSED(parent);
- clearWebPreview();
-
qreal h = 0; // total height of removed items;
bool atTop = (start == 0);
qreal offset = h;
int moveStart = 0;
int moveEnd = _lines.count() - 1;
- ChatLine *line = 0;
- if(start > _lines.count() - end) {
+ if(start < _lines.count() - start) {
// move top part
moveTop = true;
moveEnd = start - 1;
moveStart = start;
offset = -offset;
}
+ ChatLine *line = 0;
for(int i = moveStart; i <= moveEnd; i++) {
line = _lines.at(i);
line->setPos(0, line->pos().y() + offset);
}
}
+ Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
+ Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
+
// update sceneRect
- if(atTop || moveTop) {
- updateSceneRect(_sceneRect.adjusted(0, h, 0, 0));
- } else {
- updateSceneRect(_sceneRect.adjusted(0, 0, 0, -h));
- }
+ // when searching for the first non-date-line we have to take into account that our
+ // model still contains the just removed lines so we cannot simply call updateSceneRect()
+ int numRows = model()->rowCount();
+ QModelIndex firstLineIdx;
+ _firstLineRow = -1;
+ bool needOffset = false;
+ do {
+ _firstLineRow++;
+ if(_firstLineRow >= start && _firstLineRow <= end) {
+ _firstLineRow = end + 1;
+ needOffset = true;
+ }
+ firstLineIdx = model()->index(_firstLineRow, 0);
+ } while((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) == Message::DayChange && _firstLineRow < numRows);
+
+ if(needOffset)
+ _firstLineRow -= end - start + 1;
+ updateSceneRect();
}
void ChatScene::updateForViewport(qreal width, qreal height) {
// clock_t startT = clock();
qreal linePos = _sceneRect.y() + _sceneRect.height();
- qreal yBottom = linePos;
QList<ChatLine *>::iterator lineIter = _lines.end();
QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
ChatLine *line = 0;
}
}
- updateSceneRect(QRectF(0, linePos, width, yBottom - linePos));
+ updateSceneRect(width);
setHandleXLimits();
// clock_t endT = clock();
int backlogSize = model()->rowCount();
if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
QModelIndex msgIdx = model()->index(0, 0);
+ while((Message::Type)(model()->data(msgIdx, ChatLineModel::TypeRole).toInt()) == Message::DayChange) {
+ msgIdx = msgIdx.sibling(msgIdx.row() + 1, 0);
+ }
MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value<MsgId>();
BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
_lastBacklogSize = backlogSize;
return ChatLineModel::ContentsColumn;
}
+void ChatScene::updateSceneRect() {
+ if(_lines.isEmpty()) {
+ updateSceneRect(QRectF(0, 0, _sceneRect.width(), 0));
+ return;
+ }
+
+ // we hide day change messages at the top by making the scene rect smaller
+ // and by calling QGraphicsItem::hide() on all leading day change messages
+ // the first one is needed to ensure proper scrollbar ranges
+ // the second for cases where the viewport is larger then the set scenerect
+ // (in this case the items are shown anyways)
+ if(_firstLineRow == -1) {
+ int numRows = model()->rowCount();
+ _firstLineRow = 0;
+ QModelIndex firstLineIdx;
+ while(_firstLineRow < numRows) {
+ firstLineIdx = model()->index(_firstLineRow, 0);
+ if((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)
+ break;
+ _lines.at(_firstLineRow)->hide();
+ _firstLineRow++;
+ }
+ }
+
+ // the following call should be safe. If it crashes something went wrong during insert/remove
+ ChatLine *firstLine = _lines.at(_firstLineRow);
+ ChatLine *lastLine = _lines.last();
+ updateSceneRect(QRectF(0, firstLine->pos().y(), _sceneRect.width(), lastLine->pos().y() + lastLine->height() - firstLine->pos().y()));
+}
+
+void ChatScene::updateSceneRect(qreal width) {
+ _sceneRect.setWidth(width);
+ updateSceneRect();
+}
+
void ChatScene::updateSceneRect(const QRectF &rect) {
_sceneRect = rect;
setSceneRect(rect);
+ update();
}
+void ChatScene::customEvent(QEvent *event) {
+ switch(event->type()) {
+ case ClearWebPreviewEventType:
+ clearWebPreviewEvent((ClearWebPreviewEvent *)event);
+ break;
+ default:
+ return;
+ }
+}
void ChatScene::loadWebPreview(ChatItem *parentItem, const QString &url, const QRectF &urlRect) {
#ifndef HAVE_WEBKIT
if(webPreview.url != url) {
webPreview.url = url;
// load a new web view and delete the old one (if exists)
- if(webPreview.previewItem) {
+ if(webPreview.previewItem && webPreview.previewItem->scene()) {
removeItem(webPreview.previewItem);
delete webPreview.previewItem;
}
webPreview.previewItem = new WebPreviewItem(url);
- addItem(webPreview.previewItem);
+ webPreview.delayTimer.start(2000);
+ webPreview.deleteTimer.stop();
+ } else if(webPreview.previewItem && !webPreview.previewItem->scene()) {
+ // we just have to readd the item to the scene
+ webPreview.delayTimer.start(2000);
+ webPreview.deleteTimer.stop();
}
if(webPreview.urlRect != urlRect) {
webPreview.urlRect = urlRect;
Q_UNUSED(parentItem)
#else
if(parentItem == 0 || webPreview.parentItem == parentItem) {
- if(webPreview.previewItem) {
- removeItem(webPreview.previewItem);
- delete webPreview.previewItem;
- webPreview.previewItem = 0;
- }
- webPreview.parentItem = 0;
- webPreview.url = QString();
- webPreview.urlRect = QRectF();
+ // posting an event ensures that the item will not be removed as
+ // the result of another event. this could result in bad segfaults
+ QCoreApplication::postEvent(this, new ClearWebPreviewEvent());
+ }
+#endif
+}
+
+void ChatScene::showWebPreview() {
+#ifdef HAVE_WEBKIT
+ if(webPreview.previewItem)
+ addItem(webPreview.previewItem);
+#endif
+}
+
+void ChatScene::clearWebPreviewEvent(ClearWebPreviewEvent *event) {
+#ifdef HAVE_WEBKIT
+ event->accept();
+ if(webPreview.previewItem && webPreview.previewItem->scene()) {
+ removeItem(webPreview.previewItem);
+ webPreview.deleteTimer.start();
}
+ webPreview.delayTimer.stop();
#endif
}
+
+void ChatScene::deleteWebPreview() {
+ if(webPreview.previewItem) {
+ delete webPreview.previewItem;
+ webPreview.previewItem = 0;
+ }
+ webPreview.parentItem = 0;
+ webPreview.url = QString();
+ webPreview.urlRect = QRectF();
+}
projects / quassel.git / blobdiff