alecs/plasma-framework
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
4b8bebf239
plasma-framework/private/applethandle.cpp
Ambroz Bizjak 205a1700b2 Fix handle possibly moving to the other side if the cursor exist for a short time. 
Remove the handle if the cursor goes away before we even appear, previously the handle
was kept invisible until the cursor next entered.

svn path=/trunk/KDE/kdelibs/; revision=929233
2009-02-20 23:23:55 +00:00

997 lines
34 KiB
C++
Raw Blame History

/*
* Copyright 2007 by Kevin Ottens <ervin@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, 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 Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "private/applethandle_p.h"
#include <QApplication>
#include <QBitmap>
#include <QtGui/QGraphicsSceneMouseEvent>
#include <QtGui/QLinearGradient>
#include <QtGui/QPainter>
#include <QtGui/QApplication>
#include <kcolorscheme.h>
#include <kglobalsettings.h>
#include <kicon.h>
#include <kiconloader.h>
#include <kwindowsystem.h>
#include <cmath>
#include <math.h>
#include "applet.h"
#include "applet_p.h"
#include "containment.h"
#include "corona.h"
#include "paintutils.h"
#include "theme.h"
#include "view.h"
#include "framesvg.h"
namespace Plasma
{
qreal _k_distanceForPoint(QPointF point);
qreal _k_pointAngle(QPointF in);
QPointF _k_rotatePoint(QPointF in, qreal rotateAngle);
AppletHandle::AppletHandle(Containment *parent, Applet *applet, const QPointF &hoverPos)
: QObject(),
QGraphicsItem(parent),
m_pressedButton(NoButton),
m_containment(parent),
m_applet(applet),
m_iconSize(KIconLoader::SizeSmall),
m_opacity(0.0),
m_anim(FadeIn),
m_animId(0),
m_angle(0.0),
m_backgroundBuffer(0),
m_currentView(applet->view()),
m_entryPos(hoverPos),
m_buttonsOnRight(false),
m_pendingFade(false)
{
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);
m_leaveTimer = new QTimer(this);
m_leaveTimer->setSingleShot(true);
m_leaveTimer->setInterval(500);
connect(m_hoverTimer, SIGNAL(timeout()), this, SLOT(hoverTimeout()));
connect(m_leaveTimer, SIGNAL(timeout()), this, SLOT(leaveTimeout()));
connect(m_applet, SIGNAL(destroyed(QObject*)), this, SLOT(appletDestroyed()));
setAcceptsHoverEvents(true);
m_hoverTimer->start();
//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()
{
detachApplet();
delete m_backgroundBuffer;
}
Applet *AppletHandle::applet() const
{
return m_applet;
}
void AppletHandle::detachApplet ()
{
if (!m_applet) {
return;
}
disconnect(m_hoverTimer, SIGNAL(timeout()), this, SLOT(hoverTimeout()));
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;
}
QRectF Plasma::AppletHandle::boundingRect() const
{
return m_totalRect;
}
QPainterPath AppletHandle::shape() const
{
//when the containment changes the applet is reset to 0
if (m_applet) {
QPainterPath path = PaintUtils::roundedRectangle(m_decorationRect, 10);
return path.united(m_applet->mapToParent(m_applet->shape()));
} else {
return QGraphicsItem::shape();
}
}
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.quadTo(rect.right(), rect.top(),
rect.right(), rect.top() + radius); // Top right corner
path.lineTo(rect.right(), rect.bottom() - radius); // Right side
path.quadTo(rect.right(), rect.bottom(),
rect.right() - radius, rect.bottom()); // Bottom right corner
path.lineTo(rect.left(), rect.bottom()); // Bottom side
} else {
// make the right side straight
path.moveTo(QPointF(rect.left(), rect.top() + radius));
path.quadTo(rect.left(), rect.top(),
rect.left() + radius, rect.top()); // Top left corner
path.lineTo(rect.right(), rect.top()); // Top side
path.lineTo(rect.right(), rect.bottom()); // Right side
path.lineTo(rect.left() + radius, rect.bottom()); // Bottom side
path.quadTo(rect.left(), rect.bottom(),
rect.left(), rect.bottom() - radius); // Bottom left corner
}
path.closeSubpath();
return path;
}
void AppletHandle::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(option);
Q_UNUSED(widget);
//kDebug() << m_opacity << m_anim << FadeOut;
if (qFuzzyCompare(m_opacity + 1.0, 1.0)) {
if (m_anim == FadeOut) {
//kDebug() << "WOOOOOOOOO";
QTimer::singleShot(0, this, SLOT(emitDisappear()));
}
return;
}
qreal translation;
if (m_buttonsOnRight) {
//kDebug() << "translating by" << m_opacity
// << (-(1 - m_opacity) * m_rect.width()) << m_rect.width();
translation = -(1 - m_opacity) * m_rect.width();
} else {
translation = (1 - m_opacity) * m_rect.width();
}
painter->translate(translation, 0);
painter->setPen(Qt::NoPen);
painter->setRenderHints(QPainter::Antialiasing);
int iconMargin = m_iconSize / 2;
const QSize pixmapSize(int(m_decorationRect.width()),
int(m_decorationRect.height()) + m_iconSize * 4 + 1);
const QSize iconSize(KIconLoader::SizeSmall, KIconLoader::SizeSmall);
//regenerate our buffer?
if (m_animId > 0 || !m_backgroundBuffer || m_backgroundBuffer->size() != pixmapSize) {
QColor transparencyColor = Qt::black;
transparencyColor.setAlphaF(qMin(m_opacity, qreal(0.99)));
QLinearGradient g(QPoint(0, 0), QPoint(m_decorationRect.width(), 0));
//fading out panel
if (m_rect.height() > qreal(minimumHeight()) * 1.25) {
if (m_buttonsOnRight) {
qreal opaquePoint =
(m_background->marginSize(LeftMargin) - translation) / m_decorationRect.width();
//kDebug() << "opaquePoint" << opaquePoint
// << m_background->marginSize(LeftMargin) << m_decorationRect.width();
g.setColorAt(0.0, Qt::transparent);
g.setColorAt(qMax(0.0, opaquePoint - 0.05), Qt::transparent);
g.setColorAt(opaquePoint, transparencyColor);
g.setColorAt(1.0, transparencyColor);
} else {
qreal opaquePoint =
1 - ((m_background->marginSize(RightMargin) + translation) / m_decorationRect.width());
g.setColorAt(1.0, Qt::transparent);
g.setColorAt(opaquePoint, Qt::transparent);
g.setColorAt(qMax(0.0, opaquePoint - 0.05), transparencyColor);
g.setColorAt(0.0, transparencyColor);
}
//complete panel
} else {
g.setColorAt(0.0, transparencyColor);
}
m_background->resizeFrame(m_decorationRect.size());
if (!m_backgroundBuffer || m_backgroundBuffer->size() != pixmapSize) {
delete m_backgroundBuffer;
m_backgroundBuffer = new QPixmap(pixmapSize);
}
m_backgroundBuffer->fill(Qt::transparent);
QPainter buffPainter(m_backgroundBuffer);
m_background->paintFrame(&buffPainter);
//+1 because otherwise due to rounding errors when rotated could appear one pixel
//of the icon at the border of the applet
//QRectF iconRect(QPointF(pixmapSize.width() - m_iconSize + 1, m_iconSize), iconSize);
QRectF iconRect(QPointF(0, m_decorationRect.height() + 1), iconSize);
if (m_buttonsOnRight) {
iconRect.moveLeft(
pixmapSize.width() - m_iconSize - m_background->marginSize(LeftMargin));
m_configureIcons->paint(&buffPainter, iconRect, "size-diagonal-tr2bl");
} else {
iconRect.moveLeft(m_background->marginSize(RightMargin));
m_configureIcons->paint(&buffPainter, iconRect, "size-diagonal-tl2br");
}
iconRect.translate(0, m_iconSize);
m_configureIcons->paint(&buffPainter, iconRect, "rotate");
if (m_applet && m_applet->hasConfigurationInterface()) {
iconRect.translate(0, m_iconSize);
m_configureIcons->paint(&buffPainter, iconRect, "configure");
}
iconRect.translate(0, m_iconSize);
m_configureIcons->paint(&buffPainter, iconRect, "close");
buffPainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
//blend the background
buffPainter.fillRect(m_backgroundBuffer->rect(), g);
//blend the icons
//buffPainter.fillRect(QRect(QPoint((int)m_decorationRect.width(), 0), QSize(m_iconSize + 1,
// (int)m_decorationRect.height())), transparencyColor);
}
painter->drawPixmap(m_decorationRect.toRect(), *m_backgroundBuffer,
QRect(QPoint(0, 0), m_decorationRect.size().toSize()));
//XXX this code is duplicated in the next function
QPointF basePoint = m_rect.topLeft() + QPointF(HANDLE_MARGIN, iconMargin);
QPointF step = QPointF(0, m_iconSize + iconMargin);
QPointF separator = step + QPointF(0, iconMargin);
//end duplicate code
QPointF shiftC;
QPointF shiftD;
QPointF shiftR;
QPointF shiftM;
switch(m_pressedButton)
{
case ConfigureButton:
shiftC = QPointF(2, 2);
break;
case RemoveButton:
shiftD = QPointF(2, 2);
break;
case RotateButton:
shiftR = QPointF(2, 2);
break;
case ResizeButton:
shiftM = QPointF(2, 2);
break;
default:
break;
}
QRectF sourceIconRect(QPointF(0, m_decorationRect.height() + 1), iconSize);
if (m_buttonsOnRight) {
sourceIconRect.moveLeft(
pixmapSize.width() - m_iconSize - m_background->marginSize(LeftMargin));
} else {
sourceIconRect.moveLeft(m_background->marginSize(RightMargin));
}
if (m_applet && m_applet->aspectRatioMode() != FixedSize) {
//resize
painter->drawPixmap(
QRectF(basePoint + shiftM, iconSize), *m_backgroundBuffer, sourceIconRect);
basePoint += step;
}
//rotate
sourceIconRect.translate(0, m_iconSize);
painter->drawPixmap(QRectF(basePoint + shiftR, iconSize), *m_backgroundBuffer, sourceIconRect);
if (m_applet && m_applet->hasConfigurationInterface()) {
basePoint += step;
sourceIconRect.translate(0, m_iconSize);
painter->drawPixmap(
QRectF(basePoint + shiftC, iconSize), *m_backgroundBuffer, sourceIconRect);
}
//close
basePoint = m_rect.bottomLeft() + QPointF(HANDLE_MARGIN, 0) - step;
sourceIconRect.translate(0, m_iconSize);
painter->drawPixmap(QRectF(basePoint + shiftD, iconSize), *m_backgroundBuffer, sourceIconRect);
}
void AppletHandle::emitDisappear()
{
emit disappearDone(this);
}
AppletHandle::ButtonType AppletHandle::mapToButton(const QPointF &point) const
{
int iconMargin = m_iconSize / 2;
//XXX this code is duplicated in the prev. function
QPointF basePoint = m_rect.topLeft() + QPointF(HANDLE_MARGIN, iconMargin);
QPointF step = QPointF(0, m_iconSize + iconMargin);
QPointF separator = step + QPointF(0, iconMargin);
//end duplicate code
QRectF activeArea = QRectF(basePoint, QSizeF(m_iconSize, m_iconSize));
if (m_applet && m_applet->aspectRatioMode() != FixedSize) {
if (activeArea.contains(point)) {
return ResizeButton;
}
activeArea.translate(step);
}
if (activeArea.contains(point)) {
return RotateButton;
}
if (m_applet && m_applet->hasConfigurationInterface()) {
activeArea.translate(step);
if (activeArea.contains(point)) {
return ConfigureButton;
}
}
activeArea.moveTop(m_rect.bottom() - activeArea.height() - iconMargin);
if (activeArea.contains(point)) {
return RemoveButton;
}
return MoveButton;
//return m_applet->mapToParent(m_applet->shape()).contains(point) ? NoButton : MoveButton;
}
void AppletHandle::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
//containment recently switched?
if (!m_applet) {
QGraphicsItem::mousePressEvent(event);
return;
}
if (m_pendingFade) {
//m_pendingFade = false;
return;
}
if (event->button() == Qt::LeftButton) {
m_pressedButton = mapToButton(event->pos());
//kDebug() << "button pressed:" << m_pressedButton;
if (m_pressedButton != NoButton) {
m_applet->raise();
m_zValue = m_applet->zValue();
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_origAppletSize = QPointF(m_applet->size().width(), m_applet->size().height());
// resize
if (m_buttonsOnRight) {
m_resizeStaticPoint = mapToScene(m_applet->geometry().bottomLeft());
} else {
m_resizeStaticPoint = mapToScene(m_applet->geometry().bottomRight());
}
m_resizeGrabPoint = mapToScene(event->pos());
QPointF cursorRelativeToStatic = m_resizeGrabPoint - m_resizeStaticPoint;
// rotate
m_rotateAngleOffset = m_angle - _k_pointAngle(mapToScene(event->pos()) - 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.
QPoint localpos = m_currentView->mapFromScene(m_applet->scenePos());
m_mousePos = event->screenPos() - m_currentView->mapToGlobal(localpos);
return;
}
QGraphicsItem::mousePressEvent(event);
}
bool AppletHandle::leaveCurrentView(const QPoint &pos) const
{
foreach (QWidget *widget, QApplication::topLevelWidgets()) {
if (widget->geometry().contains(pos)) {
//is this widget a plasma view, a different view then our current one,
//AND not a dashboardview?
Plasma::View *v = qobject_cast<Plasma::View *>(widget);
if (v && v != m_currentView && v->containment() != m_containment) {
return true;
}
}
}
return false;
}
void AppletHandle::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
//kDebug() << "button pressed:" << m_pressedButton << ", fade pending?" << m_pendingFade;
if (m_pendingFade) {
startFading(FadeOut, m_entryPos);
m_pendingFade = false;
}
ButtonType releasedAtButton = mapToButton(event->pos());
if (m_applet && event->button() == Qt::LeftButton) {
switch (m_pressedButton) {
case ConfigureButton:
//FIXME: Remove this call once the configuration management change was done
if (m_pressedButton == releasedAtButton) {
m_applet->showConfigurationInterface();
}
break;
case RemoveButton:
if (m_pressedButton == releasedAtButton) {
forceDisappear();
m_applet->destroy();
}
break;
case MoveButton:
{
// test for containment change
//kDebug() << "testing for containment change, sceneBoundingRect = "
// << m_containment->sceneBoundingRect();
if (!m_containment->sceneBoundingRect().contains(m_applet->scenePos())) {
// see which containment it belongs to
Corona * corona = qobject_cast<Corona*>(scene());
if (corona) {
QList<Containment*> containments = corona->containments();
for (int i = 0; i < containments.size(); ++i) {
QPointF pos;
QGraphicsView *v;
v = containments[i]->view();
if (v) {
pos = v->mapToScene(
v->mapFromGlobal(event->screenPos() - m_mousePos));
if (containments[i]->sceneBoundingRect().contains(pos)) {
//kDebug() << "new containment = " << containments[i];
//kDebug() << "rect = " << containments[i]->sceneBoundingRect();
// add the applet to the new containment and take it from the old one
//kDebug() << "moving to other containment with position" << pos;;
switchContainment(containments[i], pos);
break;
}
}
}
}
}
break;
}
default:
break;
}
}
m_pressedButton = NoButton;
update();
}
qreal _k_distanceForPoint(QPointF point)
{
return std::sqrt(point.x() * point.x() + point.y() * point.y());
}
qreal _k_pointAngle(QPointF in)
{
qreal r = sqrt(in.x()*in.x() + in.y()*in.y());
qreal cosine = in.x()/r;
qreal sine = in.y()/r;
if (sine>=0) {
return acos(cosine);
} else {
return -acos(cosine);
}
}
QPointF _k_rotatePoint(QPointF in, qreal rotateAngle)
{
qreal r = sqrt(in.x()*in.x() + in.y()*in.y());
qreal cosine = in.x()/r;
qreal sine = in.y()/r;
qreal angle;
if (sine>=0) {
angle = acos(cosine);
} else {
angle = -acos(cosine);
}
qreal newAngle = angle + rotateAngle;
return QPointF(r*cos(newAngle), r*sin(newAngle));
}
void AppletHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
static const qreal snapAngle = M_PI_2 /* $i 3.14159 / 2.0 */;
if (!m_applet) {
QGraphicsItem::mouseMoveEvent(event);
return;
}
//Track how much the mouse has moved.
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) {
Containment *c = v->containment();
QPoint pos = v->mapFromGlobal(event->screenPos());
//we actually have been dropped on another containment, so
//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);
}
} else if (m_pressedButton == ResizeButton || m_pressedButton == RotateButton) {
QPointF cursorPoint = mapToScene(event->pos());
// the code below will adjust these based on the type of operation
QPointF newSize;
QPointF newCenter;
qreal newAngle;
// get size limits
QSizeF min = m_applet->minimumSize();
QSizeF max = m_applet->maximumSize();
// If the applet doesn't have a minimum size, calculate based on a
// minimum content area size of 16x16 (KIconLoader::SizeSmall)
if (min.isEmpty()) {
min = m_applet->boundingRect().size() - m_applet->boundingRect().size();
min += QSizeF(KIconLoader::SizeSmall, KIconLoader::SizeSmall);
}
if (m_pressedButton == RotateButton) {
newSize = m_origAppletSize;
newCenter = m_origAppletCenter;
QPointF centerRelativePoint = cursorPoint - m_origAppletCenter;
if (_k_distanceForPoint(centerRelativePoint) < 10) {
newAngle = m_angle;
} else {
qreal cursorAngle = _k_pointAngle(centerRelativePoint);
newAngle = m_rotateAngleOffset + cursorAngle;
if (fabs(remainder(newAngle, snapAngle)) < 0.15) {
newAngle = newAngle - remainder(newAngle, snapAngle);
}
}
} else {
// un-rotate screen points so we can read differences of coordinates
QPointF rStaticPoint = _k_rotatePoint(m_resizeStaticPoint, -m_angle);
QPointF rCursorPoint = _k_rotatePoint(cursorPoint, -m_angle);
QPointF rGrabPoint = _k_rotatePoint(m_resizeGrabPoint, -m_angle);
if (m_buttonsOnRight) {
newSize = m_origAppletSize + QPointF(rCursorPoint.x() - rGrabPoint.x(), rGrabPoint.y() - rCursorPoint.y());
} else {
newSize = m_origAppletSize + QPointF(rGrabPoint.x() - rCursorPoint.x(), rGrabPoint.y() - rCursorPoint.y());
}
// if preserving aspect ratio, project the calculated size point to the line
// theough the origin and the original size point
if ((m_applet->aspectRatioMode() != Plasma::IgnoreAspectRatio &&
!(event->modifiers() & Qt::ControlModifier)) ||
(m_applet->aspectRatioMode() == Plasma::IgnoreAspectRatio &&
(event->modifiers() & Qt::ControlModifier))) {
qreal ox = m_origAppletSize.x();
qreal oy = m_origAppletSize.y();
qreal sx = newSize.x();
qreal sy = newSize.y();
qreal x = ox*(sx*ox+sy*oy)/(ox*ox+oy*oy);
qreal y = (oy/ox)*x;
newSize = QPointF(x, y);
// limit size, preserve ratio
newSize.rx() = qMin(max.width(), qMax(min.width(), newSize.x()));
newSize.ry() = newSize.x()*(oy/ox);
newSize.ry() = qMin(max.height(), qMax(min.height(), newSize.y()));
newSize.rx() = newSize.y()/(oy/ox);
} else {
// limit size
newSize.rx() = qMin(max.width(), qMax(min.width(), newSize.x()));
newSize.ry() = qMin(max.height(), qMax(min.height(), newSize.y()));
}
// 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);
} else {
newCenter = _k_rotatePoint(QPointF(rStaticPoint.x() - newSize.x()/2, rStaticPoint.y() - newSize.y()/2), m_angle);
}
newAngle = m_angle;
}
// set position of applet handle
QPointF newHandlePosInScene = newCenter - (m_applet->pos() + newSize/2);
QPointF newHandlePos = parentItem()->mapFromScene(newHandlePosInScene);
setPos(newHandlePos);
// 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);
}
}
//pos relative to scene
void AppletHandle::switchContainment(Containment *containment, const QPointF &pos)
{
m_containment = containment;
Applet *applet = m_applet;
m_applet = 0; //make sure we don't try to act on the applet again
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);
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);
//kDebug() << "hover enter";
//if a disappear was scheduled stop the timer
if (m_leaveTimer->isActive()) {
m_leaveTimer->stop();
}
// if we're already fading out, fade back in
else if (m_animId != 0 && m_anim == FadeOut) {
startFading(FadeIn, m_entryPos, true);
}
}
void AppletHandle::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
{
hoverEnterEvent(event);
}
void AppletHandle::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event);
// if we haven't even showed up yet, remove the handle
if (m_hoverTimer->isActive()) {
m_hoverTimer->stop();
QTimer::singleShot(0, this, SLOT(emitDisappear()));
} else if (m_pressedButton != NoButton) {
m_pendingFade = true;
} else {
//wait a moment to hide the handle in order to recheck the mouse position
m_leaveTimer->start();
}
}
bool AppletHandle::sceneEventFilter(QGraphicsItem *watched, QEvent *event)
{
if (watched == m_applet && event->type() == QEvent::GraphicsSceneHoverLeave) {
hoverLeaveEvent(static_cast<QGraphicsSceneHoverEvent*>(event));
}
return false;
}
void AppletHandle::fadeAnimation(qreal progress)
{
//qreal endOpacity = (m_anim == FadeIn) ? 1.0 : -1.0;
if (m_anim == FadeIn) {
m_opacity = progress;
} else {
m_opacity = 1 - progress;
}
//kDebug() << "progress" << progress << "m_opacity" << m_opacity << m_anim << "(" << FadeIn << ")";
if (qFuzzyCompare(progress, qreal(1.0))) {
m_animId = 0;
delete m_backgroundBuffer;
m_backgroundBuffer = 0;
}
update();
}
void AppletHandle::hoverTimeout()
{
startFading(FadeIn, m_entryPos);
}
void AppletHandle::leaveTimeout()
{
startFading(FadeOut, m_entryPos);
}
void AppletHandle::appletDestroyed()
{
m_applet = 0;
}
void AppletHandle::appletResized()
{
prepareGeometryChange();
calculateSize();
update();
}
void AppletHandle::setHoverPos(const QPointF &hoverPos)
{
m_entryPos = hoverPos;
}
void AppletHandle::startFading(FadeType anim, const QPointF &hoverPos, bool preserveSide)
{
if (m_animId != 0) {
Animator::self()->stopCustomAnimation(m_animId);
}
m_entryPos = hoverPos;
qreal time = 100;
if (!m_applet) {
m_anim = FadeOut;
fadeAnimation(1.0);
return;
}
if (anim == FadeIn) {
//kDebug() << m_entryPos.x() << m_applet->pos().x();
prepareGeometryChange();
bool wasOnRight = m_buttonsOnRight;
if (!preserveSide) {
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)) {
// switch sides
//kDebug() << "switch sides";
m_buttonsOnRight = !m_buttonsOnRight;
calculateSize();
QPolygonF region2 = mapToParent(m_rect).intersected(parentWidget()->boundingRect());
if (region2 != mapToParent(m_rect)) {
// ok, both sides failed to be perfect... which one is more perfect?
QRectF f1 = region.boundingRect();
QRectF f2 = region2.boundingRect();
//kDebug() << "still not a perfect world"
// << f2.width() << f2.height() << f1.width() << f1.height();
if ((f2.width() * f2.height()) < (f1.width() * f1.height())) {
//kDebug() << "we did better the first time";
m_buttonsOnRight = !m_buttonsOnRight;
calculateSize();
}
}
}
if (wasOnRight != m_buttonsOnRight &&
m_anim == FadeIn &&
anim == FadeIn &&
m_opacity <= 1) {
m_opacity = 0.0;
}
time *= 1.0 - m_opacity;
} else {
time *= m_opacity;
}
m_anim = anim;
//kDebug() << "animating for " << time << "ms";
m_animId = Animator::self()->customAnimation(80 * (time / 1000.0), (int)time,
Animator::EaseInCurve, this, "fadeAnimation");
}
void AppletHandle::forceDisappear()
{
setAcceptsHoverEvents(false);
startFading(FadeOut, m_entryPos);
}
int AppletHandle::minimumHeight()
{
int iconMargin = m_iconSize / 2;
int requiredHeight = iconMargin + //first margin
(m_iconSize + iconMargin) * 4 + //XXX remember to update this if the number of buttons changes
iconMargin ; //blank space before the close button
if (m_applet && m_applet->hasConfigurationInterface()) {
requiredHeight += (m_iconSize + iconMargin);
}
return requiredHeight;
}
void AppletHandle::calculateSize()
{
KIconLoader *iconLoader = KIconLoader::global();
//m_iconSize = iconLoader->currentSize(KIconLoader::Small); //does not work with double sized icon
m_iconSize = iconLoader->loadIcon("transform-scale", KIconLoader::Small).width(); //workaround
int handleHeight = qMax(minimumHeight(), int(m_applet->contentsRect().height() * 0.8));
int handleWidth = m_iconSize + 2 * HANDLE_MARGIN;
int top =
m_applet->contentsRect().top() + (m_applet->contentsRect().height() - handleHeight) / 2.0;
qreal marginLeft, marginTop, marginRight, marginBottom;
m_background->getMargins(marginLeft, marginTop, marginRight, marginBottom);
if (m_buttonsOnRight) {
//put the rect on the right of the applet
m_rect = QRectF(m_applet->size().width(), top, handleWidth, handleHeight);
} else {
//put the rect on the left of the applet
m_rect = QRectF(-handleWidth, top, handleWidth, handleHeight);
}
if (m_applet->contentsRect().height() > qreal(minimumHeight()) * 1.25) {
int addedMargin = marginLeft / 2;
// now we check to see if the shape is smaller than the contents,
// and that the shape is not just the bounding rect; in those cases
// we have a shaped guy and we draw a full panel;
// TODO: allow applets to mark when they have translucent areas and
// should therefore skip this test?
if (!m_applet->shape().contains(m_applet->contentsRect())) {
QPainterPath p;
p.addRect(m_applet->boundingRect());
if (m_applet->shape() != p) {
addedMargin = m_applet->contentsRect().width() / 2;
}
}
if (m_buttonsOnRight) {
marginLeft += addedMargin;
} else {
marginRight += addedMargin;
}
}
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());
}
} // Plasma Namespace
#include "applethandle_p.moc"
Reference in New Issue View Git Blame Copy Permalink