fa5a2d87d9
svn path=/trunk/KDE/kdelibs/; revision=879757
281 lines
7.1 KiB
C++
281 lines
7.1 KiB
C++
/*
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* Copyright 2007 by André Duffeck <duffeck@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Stre
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* et, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "flashinglabel.h"
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#include <QtCore/QString>
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#include <QtCore/QTimeLine>
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#include <QtCore/QTimer>
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#include <QtGui/QPainter>
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#include <QtGui/QPixmap>
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#include <QtGui/QColor>
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#include <KDebug>
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#include <plasma/animator.h>
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using namespace Plasma;
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class Plasma::FlashingLabelPrivate
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{
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public:
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enum FlashingLabelType {
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Text,
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Pixmap
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};
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enum State {
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Visible,
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Invisible
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};
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FlashingLabelPrivate(FlashingLabel *flash)
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: q(flash),
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defaultDuration(3000),
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type(FlashingLabelPrivate::Text),
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color(Qt::black),
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animId(0),
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state(FlashingLabelPrivate::Invisible),
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autohide(false)
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{
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//TODO: put this on a diet by using timerEvent instead?
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fadeOutTimer.setInterval(defaultDuration);
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fadeOutTimer.setSingleShot(true);
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fadeInTimer.setInterval(0);
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fadeInTimer.setSingleShot(true);
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}
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~FlashingLabelPrivate() { }
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void renderPixmap(const QSize &size);
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void setupFlash(int duration);
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void elementAnimationFinished(int);
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FlashingLabel *q;
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int defaultDuration;
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FlashingLabelType type;
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QTimer fadeInTimer;
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QTimer fadeOutTimer;
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QString text;
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QColor color;
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QFont font;
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QPixmap pixmap;
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int animId;
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QPixmap renderedPixmap;
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QTextOption textOption;
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Qt::Alignment alignment;
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State state;
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bool autohide;
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};
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FlashingLabel::FlashingLabel(QGraphicsItem *parent)
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: QGraphicsWidget(parent),
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d(new FlashingLabelPrivate(this))
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{
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setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Minimum);
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setCacheMode(NoCache);
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connect(&d->fadeOutTimer, SIGNAL(timeout()), this, SLOT(fadeOut()));
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connect(&d->fadeInTimer, SIGNAL(timeout()), this, SLOT(fadeIn()));
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}
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FlashingLabel::~FlashingLabel()
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{
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delete d;
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}
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void FlashingLabel::setDuration(int duration)
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{
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if (duration < 1) {
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return;
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}
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d->defaultDuration = duration;
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}
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void FlashingLabel::setColor(const QColor &color)
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{
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d->color = color;
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}
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void FlashingLabel::setFont(const QFont &font)
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{
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d->font = font;
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}
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void FlashingLabel::flash(const QString &text, int duration, const QTextOption &option)
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{
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if (text.isEmpty()) {
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return;
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}
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//kDebug() << duration << text;
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d->type = FlashingLabelPrivate::Text;
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d->text = text;
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d->textOption = option;
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d->setupFlash(duration);
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}
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void FlashingLabel::flash(const QPixmap &pixmap, int duration, Qt::Alignment align)
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{
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if (pixmap.isNull()) {
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return;
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}
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d->type = FlashingLabelPrivate::Pixmap;
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d->pixmap = pixmap;
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d->alignment = align;
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d->setupFlash(duration);
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}
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void FlashingLabel::setAutohide(bool autohide)
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{
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d->autohide = autohide;
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if (autohide) {
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connect(Plasma::Animator::self(), SIGNAL(elementAnimationFinished(int)),
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this, SLOT(elementAnimationFinished(int)));
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} else {
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disconnect(Plasma::Animator::self(), SIGNAL(elementAnimationFinished(int)),
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this, SLOT(elementAnimationFinished(int)));
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}
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}
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bool FlashingLabel::autohide() const
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{
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return d->autohide;
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}
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void FlashingLabel::kill()
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{
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d->fadeInTimer.stop();
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if (d->state == FlashingLabelPrivate::Visible) {
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fadeOut();
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}
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}
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void FlashingLabel::fadeIn()
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{
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//kDebug();
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if (d->autohide) {
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show();
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}
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d->state = FlashingLabelPrivate::Visible;
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d->animId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::AppearAnimation);
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Plasma::Animator::self()->setInitialPixmap(d->animId, d->renderedPixmap);
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}
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void FlashingLabel::fadeOut()
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{
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if (d->state == FlashingLabelPrivate::Invisible) {
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return; // FlashingLabel was already killed - do not animate again
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}
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d->state = FlashingLabelPrivate::Invisible;
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d->animId = Plasma::Animator::self()->animateElement(
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this, Plasma::Animator::DisappearAnimation);
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Plasma::Animator::self()->setInitialPixmap(d->animId, d->renderedPixmap);
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}
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void FlashingLabel::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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if (d->animId && !Plasma::Animator::self()->currentPixmap(d->animId).isNull()) {
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painter->drawPixmap(0, 0, Plasma::Animator::self()->currentPixmap(d->animId));
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} else {
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d->animId = 0;
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if (d->state == FlashingLabelPrivate::Visible) {
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painter->drawPixmap(0, 0, d->renderedPixmap);
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}
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}
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}
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void FlashingLabelPrivate::renderPixmap(const QSize &size)
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{
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if (renderedPixmap.size() != size) {
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renderedPixmap = QPixmap(size);
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}
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renderedPixmap.fill(Qt::transparent);
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QPainter painter(&renderedPixmap);
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if (type == FlashingLabelPrivate::Text) {
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painter.setPen(color);
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painter.setFont(font);
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painter.drawText(QRect(QPoint(0, 0), size), text, textOption);
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} else if (type == FlashingLabelPrivate::Pixmap) {
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QPoint p;
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if(alignment & Qt::AlignLeft) {
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p.setX(0);
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} else if (alignment & Qt::AlignRight) {
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p.setX(size.width() - pixmap.width());
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} else {
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p.setX((size.width() - pixmap.width()) / 2);
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}
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if (alignment & Qt::AlignTop) {
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p.setY(0);
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} else if (alignment & Qt::AlignRight) {
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p.setY(size.height() - pixmap.height());
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} else {
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p.setY((size.height() - pixmap.height()) / 2);
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}
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painter.drawPixmap(p, pixmap);
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}
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painter.end();
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if (animId) {
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Plasma::Animator::self()->setInitialPixmap(animId, renderedPixmap);
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}
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}
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void FlashingLabelPrivate::setupFlash(int duration)
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{
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fadeOutTimer.stop();
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fadeOutTimer.setInterval(duration > 0 ? duration : defaultDuration);
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renderPixmap(q->size().toSize());
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if (state != FlashingLabelPrivate::Visible) {
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fadeInTimer.start();
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} else {
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q->update();
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}
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if (fadeOutTimer.interval() > 0) {
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fadeOutTimer.start();
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}
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}
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void FlashingLabelPrivate::elementAnimationFinished(int id)
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{
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if (autohide && state == FlashingLabelPrivate::Invisible && id == animId) {
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q->hide();
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}
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}
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#include "flashinglabel.moc"
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