alecs/plasma-framework
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
b2665af9cf
plasma-framework/private/applethandle.cpp
Artur Duque de Souza cae61ee4ca Use enums from KIconLoader 
Instead of using hardcore numbers, it would be great to use the enums provided by 
KIconLoader whenever we use sizes for icons.

Made the change for the obvious ones replacing "16" by KIconLoader::SizeSmall, 
"22" by KIconLoader::SizeSmallMedium and "32" by KIconLoader::SizeMedium.

svn path=/trunk/KDE/kdelibs/; revision=926544
2009-02-15 16:35:52 +00:00

999 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(fadeIn()));
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(fadeIn()));
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
m_leaveTimer->stop();
// if we're already fading out, fade back in
if (m_animId != 0 && m_anim == FadeOut) {
startFading(FadeIn, m_entryPos);
} else {
//schedule appear
m_hoverTimer->start();
}
}
void AppletHandle::hoverMoveEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event);
m_leaveTimer->stop();
}
void AppletHandle::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
{
Q_UNUSED(event);
m_hoverTimer->stop();
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::fadeIn()
{
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)
{
if (m_animId != 0) {
Animator::self()->stopCustomAnimation(m_animId);
}
m_hoverTimer->stop();
m_leaveTimer->stop();
m_entryPos = hoverPos;
qreal time = 100;
if (!m_applet || (anim == FadeOut && m_hoverTimer->isActive())) {
// fading out before we've started fading in
m_anim = FadeOut;
fadeAnimation(1.0);
return;
}
if (anim == FadeIn) {
//kDebug() << m_entryPos.x() << m_applet->pos().x();
prepareGeometryChange();
bool wasOnRight = m_buttonsOnRight;
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