Plasma

applettitlebar.cpp

00001 /*
00002  *   Copyright 2009 Marco Martin <notmart@gmail.com>
00003  *
00004  *   This program is free software; you can redistribute it and/or modify
00005  *   it under the terms of the GNU Library General Public License as
00006  *   published by the Free Software Foundation; either version 2, or
00007  *   (at your option) any later version.
00008  *
00009  *   This program is distributed in the hope that it will be useful,
00010  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  *   GNU General Public License for more details
00013  *
00014  *   You should have received a copy of the GNU Library General Public
00015  *   License along with this program; if not, write to the
00016  *   Free Software Foundation, Inc.,
00017  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00018  */
00019 
00020 #include "applettitlebar.h"
00021 #include "newspaper.h"
00022 
00023 #include <QGraphicsGridLayout>
00024 #include <QGraphicsSceneMouseEvent>
00025 #include <QGraphicsSceneResizeEvent>
00026 #include <QLabel>
00027 #include <QPainter>
00028 #include <QTimer>
00029 
00030 
00031 #include <KIconLoader>
00032 
00033 #include <Plasma/Animator>
00034 #include <Plasma/IconWidget>
00035 #include <Plasma/Label>
00036 #include <Plasma/Separator>
00037 #include <Plasma/Svg>
00038 #include <Plasma/Theme>
00039 
00040 
00041 AppletTitleBar::AppletTitleBar(Plasma::Applet *applet)
00042        : QGraphicsWidget(applet),
00043          m_applet(applet),
00044          m_pressedButton(NoButton),
00045          m_maximizeButtonAnimationId(0),
00046          m_configureButtonAnimationId(0),
00047          m_closeButtonAnimationId(0),
00048          m_separator(0),
00049          m_background(0),
00050          m_savedAppletTopMargin(0),
00051          m_underMouse(false),
00052          m_showButtons(false)
00053 {
00054     m_maximizeButtonRect = m_configureButtonRect = m_closeButtonRect = QRect(0, 0, KIconLoader::SizeSmallMedium, KIconLoader::SizeSmallMedium);
00055 
00056     m_icons = new Plasma::Svg(this);
00057     m_icons->setImagePath("widgets/configuration-icons");
00058     m_icons->setContainsMultipleImages(true);
00059 
00060 
00061     if (applet->backgroundHints() & Plasma::Applet::StandardBackground) {
00062         m_separator = new Plasma::Svg(this);
00063         m_separator->setImagePath("widgets/line");
00064         m_separator->setContainsMultipleImages(true);
00065     } else {
00066         m_background = new Plasma::FrameSvg(this);
00067         m_background->setImagePath("widgets/background");
00068     }
00069 
00070     applet->installEventFilter(this);
00071     syncMargins();
00072     syncSize();
00073 
00074     if (applet->containment()) {
00075         connect(applet->containment(), SIGNAL(appletRemoved(Plasma::Applet *)), this, SLOT(appletRemoved(Plasma::Applet *)));
00076     }
00077     connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeChanged()));
00078 
00079     connect(Plasma::Animator::self(), SIGNAL(elementAnimationFinished(int)), this, SLOT(animationFinished(int)));
00080 }
00081 
00082 AppletTitleBar::~AppletTitleBar()
00083 {
00084 }
00085 
00086 
00087 void AppletTitleBar::syncMargins()
00088 {
00089     const int extraMargin = 2;
00090     syncIconRects();
00091 
00092 
00093     if (m_background) {
00094         qreal left, top, right, bottom;
00095 
00096         m_background->getMargins(left, top, right, bottom);
00097         setContentsMargins(left, top, right, bottom);
00098         setMinimumHeight(m_maximizeButtonRect.height() + extraMargin + top + bottom);
00099         setMaximumHeight(m_maximizeButtonRect.height() + extraMargin + top + bottom);
00100     } else {
00101         setMinimumHeight(m_maximizeButtonRect.height() + extraMargin);
00102         setMaximumHeight(m_maximizeButtonRect.height() + extraMargin);
00103     }
00104 
00105     qreal left, right, bottom;
00106     m_applet->getContentsMargins(&left, &m_savedAppletTopMargin, &right, &bottom);
00107     m_applet->setContentsMargins(left, m_savedAppletTopMargin + size().height() + extraMargin, right, bottom);
00108 }
00109 
00110 void AppletTitleBar::syncSize()
00111 {
00112     setGeometry(QRectF(QPointF(m_applet->contentsRect().left(), m_savedAppletTopMargin),
00113                 QSizeF(m_applet->contentsRect().size().width(),
00114                 size().height())));
00115 }
00116 
00117 void AppletTitleBar::syncIconRects()
00118 {
00119     m_maximizeButtonRect.moveTopLeft(contentsRect().topLeft());
00120     m_configureButtonRect.moveTopLeft(contentsRect().topLeft());
00121 
00122     if (m_applet->hasValidAssociatedApplication()) {
00123         m_configureButtonRect.moveLeft(contentsRect().left() + m_maximizeButtonRect.width() + 2);
00124     }
00125 
00126     m_closeButtonRect.moveTopRight(contentsRect().topRight());
00127 }
00128 
00129 bool AppletTitleBar::eventFilter(QObject *watched, QEvent *event)
00130 {
00131     Q_UNUSED(watched)
00132     if (event->type() == QEvent::GraphicsSceneResize) {
00133         syncSize();
00134     } else if (event->type() == QEvent::GraphicsSceneHoverEnter) {
00135         m_underMouse = true;
00136         m_showButtons = true;
00137         syncIconRects();
00138 
00139         if (m_maximizeButtonAnimationId) {
00140             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00141         }
00142         m_maximizeButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::AppearAnimation);
00143         Plasma::Animator::self()->setInitialPixmap(m_maximizeButtonAnimationId, m_icons->pixmap("maximize"));
00144 
00145         if (m_configureButtonAnimationId) {
00146             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00147         }
00148         m_configureButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::AppearAnimation);
00149         Plasma::Animator::self()->setInitialPixmap(m_configureButtonAnimationId, m_icons->pixmap("configure"));
00150 
00151         if (m_closeButtonAnimationId) {
00152             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00153         }
00154         m_closeButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::AppearAnimation);
00155         Plasma::Animator::self()->setInitialPixmap(m_closeButtonAnimationId, m_icons->pixmap("close"));
00156 
00157         update();
00158     } else if (event->type() == QEvent::GraphicsSceneHoverLeave) {
00159         m_underMouse = false;
00160         if (m_maximizeButtonAnimationId) {
00161             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00162         }
00163         m_maximizeButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::DisappearAnimation);
00164         Plasma::Animator::self()->setInitialPixmap(m_maximizeButtonAnimationId, m_icons->pixmap("maximize"));
00165 
00166         if (m_configureButtonAnimationId) {
00167             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00168         }
00169         m_configureButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::DisappearAnimation);
00170         Plasma::Animator::self()->setInitialPixmap(m_configureButtonAnimationId, m_icons->pixmap("configure"));
00171 
00172         if (m_closeButtonAnimationId) {
00173             Plasma::Animator::self()->stopElementAnimation(m_maximizeButtonAnimationId);
00174         }
00175         m_closeButtonAnimationId = Plasma::Animator::self()->animateElement(this, Plasma::Animator::DisappearAnimation);
00176         Plasma::Animator::self()->setInitialPixmap(m_closeButtonAnimationId, m_icons->pixmap("close"));
00177 
00178         update();
00179     }
00180 
00181     return false;
00182 }
00183 
00184 void AppletTitleBar::mousePressEvent(QGraphicsSceneMouseEvent *event)
00185 {
00186     if (m_applet->hasValidAssociatedApplication() && 
00187         m_maximizeButtonRect.contains(event->pos())) {
00188         m_pressedButton = MaximizeButton;
00189         m_maximizeButtonRect.translate(1, 1);
00190         update(m_maximizeButtonRect);
00191     } else if (m_configureButtonRect.contains(event->pos())) {
00192         m_configureButtonRect.translate(1, 1);
00193         m_pressedButton = ConfigureButton;
00194         update(m_configureButtonRect);
00195     } else if (m_closeButtonRect.contains(event->pos())) {
00196         m_closeButtonRect.translate(1, 1);
00197         m_pressedButton = CloseButton;
00198         update(m_closeButtonRect);
00199     } else {
00200         event->ignore();
00201     }
00202 }
00203 
00204 void AppletTitleBar::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
00205 {
00206     event->ignore();
00207 }
00208 
00209 void AppletTitleBar::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
00210 {
00211     if (m_pressedButton == MaximizeButton && m_maximizeButtonRect.contains(event->pos())) {
00212         if (m_applet->hasValidAssociatedApplication()) {
00213             m_applet->runAssociatedApplication();
00214         }
00215     } else if (m_pressedButton == ConfigureButton && m_configureButtonRect.contains(event->pos())) {
00216         if (m_applet->hasConfigurationInterface()) {
00217             m_applet->showConfigurationInterface();
00218         }
00219     } else if (m_pressedButton == CloseButton && m_closeButtonRect.contains(event->pos())) {
00220         if (m_applet->immutability() == Plasma::Mutable) {
00221             m_applet->destroy();
00222         }
00223     } else {
00224         event->ignore();
00225     }
00226 
00227     switch (m_pressedButton) {
00228     case MaximizeButton:
00229         m_maximizeButtonRect.translate(-1, -1);
00230         update(m_maximizeButtonRect);
00231         break;
00232     case ConfigureButton:
00233         m_configureButtonRect.translate(-1, -1);
00234         update(m_configureButtonRect);
00235         break;
00236     case CloseButton:
00237         m_closeButtonRect.translate(-1, -1);
00238         update(m_closeButtonRect);
00239         break;
00240     default:
00241         break;
00242     }
00243 
00244     m_pressedButton = NoButton;
00245 }
00246 
00247 void AppletTitleBar::resizeEvent(QGraphicsSceneResizeEvent *event)
00248 {
00249     if (m_background) {
00250         m_background->resizeFrame(event->newSize());
00251     }
00252 
00253     syncIconRects();
00254 }
00255 
00256 void AppletTitleBar::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
00257 {
00258     Q_UNUSED(option)
00259     Q_UNUSED(widget)
00260 
00261     if (m_background) {
00262         m_background->paintFrame(painter);
00263     }
00264 
00265     if (m_showButtons) {
00266         if (m_applet->hasValidAssociatedApplication()) {
00267             if (m_maximizeButtonAnimationId) {
00268                 QPixmap animPixmap = Plasma::Animator::self()->currentPixmap(m_maximizeButtonAnimationId);
00269                 painter->drawPixmap(m_maximizeButtonRect, animPixmap, animPixmap.rect());
00270             } else {
00271                 m_icons->paint(painter, m_maximizeButtonRect, "maximize");
00272             }
00273         }
00274         if (m_applet->hasConfigurationInterface()) {
00275             if (m_maximizeButtonAnimationId) {
00276                 QPixmap animPixmap = Plasma::Animator::self()->currentPixmap(m_configureButtonAnimationId);
00277                 painter->drawPixmap(m_configureButtonRect, animPixmap, animPixmap.rect());
00278             } else {
00279                 m_icons->paint(painter, m_configureButtonRect, "configure");
00280             }
00281         }
00282         if (m_applet->immutability() == Plasma::Mutable) {
00283             if (m_maximizeButtonAnimationId) {
00284                 QPixmap animPixmap = Plasma::Animator::self()->currentPixmap(m_closeButtonAnimationId);
00285                 painter->drawPixmap(m_closeButtonRect, animPixmap, animPixmap.rect());
00286             } else {
00287                 m_icons->paint(painter, m_closeButtonRect, "close");
00288             }
00289         }
00290     }
00291 
00292     painter->save();
00293     painter->setPen(Plasma::Theme::defaultTheme()->color(Plasma::Theme::TextColor));
00294     painter->setFont(Plasma::Theme::defaultTheme()->font(Plasma::Theme::DefaultFont));
00295     painter->drawText(contentsRect(), Qt::AlignCenter, m_applet->name());
00296     painter->restore();
00297 
00298     if (m_separator) {
00299         QRectF lineRect = contentsRect();
00300         lineRect.setTop(lineRect.height() - m_separator->elementSize("horizontal-line").height());
00301         m_separator->paint(painter, lineRect, "horizontal-line");
00302     }
00303 }
00304 
00305 void AppletTitleBar::appletRemoved(Plasma::Applet *applet)
00306 {
00307     if (applet == m_applet) {
00308         qreal left, top, right, bottom;
00309         m_applet->getContentsMargins(&left, &top, &right, &bottom);
00310         m_applet->setContentsMargins(left, m_savedAppletTopMargin + size().height(), right, bottom);
00311         deleteLater();
00312     }
00313 }
00314 
00315 void AppletTitleBar::themeChanged()
00316 {
00317     //send the margin update in the back of eveny queue,
00318     //so it will be executed after the margins update by Plasma::Applet
00319     QTimer::singleShot(0, this, SLOT(syncMargins()));
00320 }
00321 
00322 void AppletTitleBar::animationFinished(int id)
00323 {
00324     if (!m_underMouse) {
00325         m_showButtons = false;
00326     }
00327 
00328     if (id == m_maximizeButtonAnimationId) {
00329         m_maximizeButtonAnimationId = 0;
00330     } else if (id == m_configureButtonAnimationId) {
00331         m_configureButtonAnimationId = 0;
00332     } else if (id == m_closeButtonAnimationId) {
00333         m_closeButtonAnimationId = 0;
00334     }
00335 }
00336 
00337 #include <applettitlebar.moc>
Plasma

applettitlebar.cpp

Plasma

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