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start of making the applet handle a child of the applet, stacked behind. a lot less code, preserves the geometry caches in the scene. also removes a ton of update() calls that aren't necessary these days. result -> a lot snappier/smoother. still some positioning bugs due to the change in parenting in the code, but definitely the direction we need to be going in.

Browse Source 
svn path=/trunk/KDE/kdelibs/; revision=1021595
This commit is contained in:
Aaron J. Seigo 2009-09-09 16:14:20 +00:00
parent c96119f4ed
commit 85defb5470
2 changed files with 38 additions and 107 deletions
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143
private/applethandle.cpp
View File

@ -54,7 +54,7 @@ QPointF _k_rotatePoint(QPointF in, qreal rotateAngle);
AppletHandle::AppletHandle(Containment *parent, Applet *applet, const QPointF &hoverPos)
: QObject(),
QGraphicsItem(parent),
QGraphicsItem(applet),
m_pressedButton(NoButton),
m_containment(parent),
m_applet(applet),
@ -69,35 +69,13 @@ AppletHandle::AppletHandle(Containment *parent, Applet *applet, const QPointF &h
m_buttonsOnRight(false),
m_pendingFade(false)
{
setFlags(flags() | QGraphicsItem::ItemStacksBehindParent);
KColorScheme colorScheme(QPalette::Active, KColorScheme::View,
Theme::defaultTheme()->colorScheme());
m_gradientColor = colorScheme.background(KColorScheme::NormalBackground).color();
m_originalGeom = m_applet->geometry();
m_originalTransform = m_applet->transform();
QTransform originalMatrix = m_applet->transform();
m_applet->resetTransform();
QRectF rect(m_applet->contentsRect());
QPointF center = rect.center();
originalMatrix.translate(center.x(), center.y());
qreal cosine = originalMatrix.m11();
qreal sine = originalMatrix.m12();
m_angle = _k_pointAngle(QPointF(cosine, sine));
m_applet->setParentItem(this);
rect = QRectF(m_applet->pos(), m_applet->size());
center = rect.center();
QTransform matrix;
matrix.translate(center.x(), center.y());
matrix.rotateRadians(m_angle);
matrix.translate(-center.x(), -center.y());
setTransform(matrix);
m_hoverTimer = new QTimer(this);
m_hoverTimer->setSingleShot(true);
m_hoverTimer->setInterval(333);
@ -116,20 +94,11 @@ AppletHandle::AppletHandle(Containment *parent, Applet *applet, const QPointF &h
//icons
m_configureIcons = new Svg(this);
m_configureIcons->setImagePath("widgets/configuration-icons");
//FIXME: this should be of course true, but works only if false
m_configureIcons->setContainsMultipleImages(true);
m_background = new FrameSvg(this);
m_background->setImagePath("widgets/background");
//We got to be able to see the applet while dragging to to another containment,
//so we want a high zValue.
//FIXME: apparently this doesn't work: sometimes an applet still get's drawn behind
//the containment it's being dragged to, sometimes it doesn't.
m_zValue = m_applet->zValue() - 1;
m_applet->raise();
m_applet->installSceneEventFilter(this);
setZValue(m_applet->zValue());
}
AppletHandle::~AppletHandle()
@ -143,7 +112,7 @@ Applet *AppletHandle::applet() const
return m_applet;
}
void AppletHandle::detachApplet ()
void AppletHandle::detachApplet()
{
if (!m_applet) {
return;
@ -153,30 +122,10 @@ void AppletHandle::detachApplet ()
disconnect(m_leaveTimer, SIGNAL(timeout()), this, SLOT(leaveTimeout()));
m_applet->disconnect(this);
m_applet->removeSceneEventFilter(this);
QRectF appletGeomLocal = m_applet->geometry();
QPointF center = mapToParent(appletGeomLocal.center());
QPointF appletPos = QPointF(center.x()-appletGeomLocal.width()/2, center.y()-appletGeomLocal.height()/2);
m_applet->setPos(appletPos);
// transform is relative to the applet
QTransform t;
t.translate(appletGeomLocal.width()/2, appletGeomLocal.height()/2);
t.rotateRadians(m_angle);
t.translate(-appletGeomLocal.width()/2, -appletGeomLocal.height()/2);
m_applet->setTransform(t);
m_applet->setParentItem(m_containment);
m_applet->setZValue(m_zValue);
if (m_applet->geometry() != m_originalGeom || m_applet->transform() != m_originalTransform) {
emit m_applet->appletTransformedByUser();
}
m_applet->update(); // re-render the background, now we've transformed the applet
m_applet = 0;
}
@ -201,8 +150,8 @@ QPainterPath handleRect(const QRectF &rect, int radius, bool onRight)
QPainterPath path;
if (onRight) {
// make the left side straight
path.moveTo(rect.left(), rect.top()); // Top left
path.lineTo(rect.right() - radius, rect.top()); // Top side
path.moveTo(rect.left(), rect.top()); // Top left
path.lineTo(rect.right() - radius, rect.top()); // Top side
path.quadTo(rect.right(), rect.top(),
rect.right(), rect.top() + radius); // Top right corner
path.lineTo(rect.right(), rect.bottom() - radius); // Right side
@ -461,12 +410,8 @@ void AppletHandle::mousePressEvent(QGraphicsSceneMouseEvent *event)
setZValue(m_zValue);
}
if (m_pressedButton == MoveButton) {
m_pos = pos();
}
if (m_pressedButton == ResizeButton || m_pressedButton == RotateButton) {
m_origAppletCenter = mapToScene(m_applet->geometry().center());
m_origAppletCenter = m_applet->geometry().center();
m_origAppletSize = QPointF(m_applet->size().width(), m_applet->size().height());
// resize
@ -475,17 +420,14 @@ void AppletHandle::mousePressEvent(QGraphicsSceneMouseEvent *event)
} else {
m_resizeStaticPoint = mapToScene(m_applet->geometry().bottomRight());
}
m_resizeGrabPoint = mapToScene(event->pos());
QPointF cursorRelativeToStatic = m_resizeGrabPoint - m_resizeStaticPoint;
m_resizeGrabPoint = event->scenePos();
// rotate
m_rotateAngleOffset = m_angle - _k_pointAngle(mapToScene(event->pos()) - m_origAppletCenter);
m_rotateAngleOffset = m_angle - _k_pointAngle(event->scenePos() - m_origAppletCenter);
}
event->accept();
update();
//set mousePos to the position in the applet, in screencoords, so it becomes easy
//to reposition the toplevel view to the correct position.
if (m_currentView && m_applet) {
@ -590,7 +532,7 @@ qreal _k_pointAngle(QPointF in)
qreal cosine = in.x()/r;
qreal sine = in.y()/r;
if (sine>=0) {
if (sine >= 0) {
return acos(cosine);
} else {
return -acos(cosine);
@ -627,7 +569,6 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
QPointF deltaScene = event->scenePos() - event->lastScenePos();
if (m_pressedButton == MoveButton) {
m_pos += deltaScene;
if (leaveCurrentView(event->screenPos())) {
Plasma::View *v = Plasma::View::topLevelViewAt(event->screenPos());
if (v && v != m_currentView) {
@ -637,14 +578,14 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
//move there: we have a screenpos, we need a scenepos
//FIXME how reliable is this transform?
switchContainment(c, v->mapToScene(pos));
} else {
setPos(m_pos);
}
} else {
setPos(m_pos);
}
if (m_applet) {
m_applet->moveBy(deltaScene.x(), deltaScene.y());
}
} else if (m_pressedButton == ResizeButton || m_pressedButton == RotateButton) {
QPointF cursorPoint = mapToScene(event->pos());
QPointF cursorPoint = event->scenePos();
// the code below will adjust these based on the type of operation
QPointF newSize;
@ -724,32 +665,32 @@ void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
// move center such that the static corner remains in the same place
if (m_buttonsOnRight) {
newCenter = _k_rotatePoint(QPointF(rStaticPoint.x() + newSize.x()/2, rStaticPoint.y() - newSize.y()/2), m_angle);
newCenter = _k_rotatePoint(QPointF(rStaticPoint.x() + newSize.x()/2,
rStaticPoint.y() - newSize.y()/2), 0);
} else {
newCenter = _k_rotatePoint(QPointF(rStaticPoint.x() - newSize.x()/2, rStaticPoint.y() - newSize.y()/2), m_angle);
newCenter = _k_rotatePoint(QPointF(rStaticPoint.x() - newSize.x()/2,
rStaticPoint.y() - newSize.y()/2), 0);
}
newAngle = m_angle;
}
// set position of applet handle
QPointF newHandlePosInScene = newCenter - (m_applet->pos() + newSize/2);
QPointF newHandlePos = parentItem()->mapFromScene(newHandlePosInScene);
setPos(newHandlePos);
if (m_pressedButton == ResizeButton) {
// set applet size
kDebug() << newCenter << m_originalGeom.topLeft() << newSize;
m_applet->setPos(newCenter - (m_originalGeom.topLeft() + newSize/2));
m_applet->resize(newSize.x(), newSize.y());
} else {
// set applet handle rotation - rotate around center of applet
QRectF appletGeomLocal = m_originalGeom;
QTransform at;
at.translate(appletGeomLocal.width()/2, appletGeomLocal.height()/2);
at.rotateRadians(newAngle);
at.translate(-appletGeomLocal.width()/2, -appletGeomLocal.height()/2);
m_applet->setTransform(at);
}
// set applet size
m_applet->resize(newSize.x(), newSize.y());
// set applet handle rotation - rotate around center of applet
QTransform t;
QPointF appletCenter = m_applet->geometry().center();
t.translate(appletCenter.x(), appletCenter.y());
t.rotateRadians(newAngle);
t.translate(-appletCenter.x(), -appletCenter.y());
setTransform(t);
m_angle = newAngle;
m_applet->update();
} else {
QGraphicsItem::mouseMoveEvent(event);
}
@ -764,19 +705,11 @@ void AppletHandle::switchContainment(Containment *containment, const QPointF &po
applet->removeSceneEventFilter(this);
forceDisappear(); //takes care of event filter and killing handle
applet->disconnect(this); //make sure the applet doesn't tell us to do anything
applet->setZValue(m_zValue);
//applet->setZValue(m_zValue);
containment->addApplet(applet, containment->mapFromScene(pos), false);
update();
}
QVariant AppletHandle::itemChange(GraphicsItemChange change, const QVariant &value)
{
if (change == ItemPositionHasChanged && m_applet) {
m_applet->updateConstraints(Plasma::LocationConstraint);
}
return QGraphicsItem::itemChange(change, value);
}
void AppletHandle::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event);
@ -902,14 +835,14 @@ void AppletHandle::startFading(FadeType anim, const QPointF &hoverPos, bool pres
m_buttonsOnRight = m_entryPos.x() > (m_applet->size().width() / 2);
}
calculateSize();
QPolygonF region = mapToParent(m_rect).intersected(parentWidget()->boundingRect());
//kDebug() << region << m_rect << mapToParent(m_rect) << parentWidget()->boundingRect();
if (region != mapToParent(m_rect)) {
QPolygonF region = m_applet->mapToParent(m_rect).intersected(m_applet->parentWidget()->boundingRect());
//kDebug() << region << m_rect << mapToParent(m_rect) << containmnet->boundingRect();
if (region != m_applet->mapToParent(m_rect)) {
// switch sides
//kDebug() << "switch sides";
m_buttonsOnRight = !m_buttonsOnRight;
calculateSize();
QPolygonF region2 = mapToParent(m_rect).intersected(parentWidget()->boundingRect());
QPolygonF region2 = m_applet->mapToParent(m_rect).intersected(m_applet->parentWidget()->boundingRect());
if (region2 != mapToParent(m_rect)) {
// ok, both sides failed to be perfect... which one is more perfect?
QRectF f1 = region.boundingRect();
@ -1007,7 +940,7 @@ void AppletHandle::calculateSize()
}
}
m_rect = m_applet->mapToParent(m_rect).boundingRect();
//m_rect = m_applet->mapToParent(m_rect).boundingRect();
m_decorationRect = m_rect.adjusted(-marginLeft, -marginTop, marginRight, marginBottom);
m_totalRect = m_decorationRect.united(m_applet->geometry());
}

2
private/applethandle_p.h
View File

@ -73,7 +73,6 @@ class AppletHandle : public QObject, public QGraphicsItem
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
bool sceneEventFilter(QGraphicsItem *watched, QEvent *event);
Q_SIGNALS:
@ -125,7 +124,6 @@ class AppletHandle : public QObject, public QGraphicsItem
QPoint m_mousePos; //mousepos relative to applet
QPointF m_entryPos; //where the hover in event occurred
QPointF m_pos; //current position of applet in sceneCoords
qreal m_zValue; //current zValue of the applet, so it can be restored after drag.
QRectF m_originalGeom;
QTransform m_originalTransform;