#include "columnhandleitem.h"
#include "messagefilter.h"
#include "qtui.h"
+#include "qtuistyle.h"
#include "chatviewsettings.h"
const qreal minContentsWidth = 200;
_model(model),
_singleBufferScene(false),
_sceneRect(0, 0, width, 0),
+ _viewportHeight(0),
_selectingItem(0),
_selectionStart(-1),
_isSelecting(false),
bool atTop = true;
bool atBottom = false;
bool moveTop = false;
- bool hasWidth = (width != 0);
if(start > 0) {
y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
if(start == _lines.count())
atBottom = true;
+ qreal contentsWidth = width - secondColumnHandle()->sceneRight();
+ qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
+ qreal timestampWidth = firstColumnHandle()->sceneLeft();
+ QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
+ QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
+
+
for(int i = end; i >= start; i--) {
- ChatLine *line = new ChatLine(i, model());
+ ChatLine *line = new ChatLine(i, model(),
+ width,
+ timestampWidth, senderWidth, contentsWidth,
+ senderPos, contentsPos);
+ if(atTop) {
+ h -= line->height();
+ line->setPos(0, y+h);
+ } else {
+ line->setPos(0, y+h);
+ h += line->height();
+ }
_lines.insert(start, line);
addItem(line);
- if(hasWidth) {
- if(atTop) {
- h -= line->setGeometry(width);
- line->setPos(0, y+h);
- } else {
- line->setPos(0, y+h);
- h += line->setGeometry(width);
- }
- }
}
// update existing items
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 sceneHeightChanged(h);
+ emit lastLineChanged(_lines.last());
}
}
}
}
+void ChatScene::updateForViewport(qreal width, qreal height) {
+ _viewportHeight = height;
+ setWidth(width);
+}
+
+// setWidth is used for 2 things:
+// a) updating the scene to fit the width of the corresponding view
+// b) to update the positions of the items if a columhandle has changed it's position
+// forceReposition is true in the second case
+// this method features some codeduplication for the sake of performance
void ChatScene::setWidth(qreal width, bool forceReposition) {
if(width == _sceneRect.width() && !forceReposition)
return;
- // clock_t startT = clock();
- qreal oldHeight = _sceneRect.height();
- qreal y = _sceneRect.y();
- qreal linePos = y;
-
- foreach(ChatLine *line, _lines) {
- line->setPos(0, linePos);
- linePos += line->setGeometry(width);
+// 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;
+ qreal lineHeight = 0;
+ qreal contentsWidth = width - secondColumnHandle()->sceneRight();
+
+ if(forceReposition) {
+ qreal timestampWidth = firstColumnHandle()->sceneLeft();
+ qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
+ QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
+ QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
+ while(lineIter != lineIterBegin) {
+ lineIter--;
+ line = *lineIter;
+ lineHeight = line->setColumns(timestampWidth, senderWidth, contentsWidth, senderPos, contentsPos);
+ linePos -= lineHeight;
+ line->setPos(0, linePos);
+ }
+ } else {
+ while(lineIter != lineIterBegin) {
+ lineIter--;
+ line = *lineIter;
+ lineHeight = line->setGeometryByWidth(width, contentsWidth);
+ linePos -= lineHeight;
+ line->setPos(0, linePos);
+ }
}
- qreal height = linePos - y;
-
- updateSceneRect(QRectF(0, y, width, height));
+ updateSceneRect(QRectF(0, linePos, width, yBottom - linePos));
setHandleXLimits();
- qreal dh = height - oldHeight;
- if(dh > 0)
- emit sceneHeightChanged(dh);
-
- // clock_t endT = clock();
- // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
+// clock_t endT = clock();
+// qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
}
void ChatScene::handlePositionChanged(qreal xpos) {
}
void ChatScene::requestBacklog() {
- static const int REQUEST_COUNT = 100;
+ static const int REQUEST_COUNT = 500;
int backlogSize = model()->rowCount();
if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
QModelIndex msgIdx = model()->index(0, 0);