767 lines
21 KiB
C++
767 lines
21 KiB
C++
/*
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* Copyright (C) 2005 by Aaron Seigo <aseigo@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 version 2 as
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* published by the Free Software Foundation
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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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "applet.h"
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#include <QApplication>
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#include <QEvent>
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#include <QList>
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#include <QPainter>
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#include <QSize>
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#include <QTimer>
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#include <QStyleOptionGraphicsItem>
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#include <KIcon>
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#include <KDialog>
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#include <KPluginInfo>
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#include <KStandardDirs>
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#include <KService>
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#include <KServiceTypeTrader>
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#include <KIconLoader>
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#include "plasma/corona.h"
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#include "plasma/dataenginemanager.h"
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#include "plasma/package.h"
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#include "plasma/packages_p.h"
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#include "plasma/plasma.h"
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#include "plasma/scriptengine.h"
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#include "plasma/svg.h"
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#include "plasma/widgets/widget.h"
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#include "plasma/widgets/lineedit.h"
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#include "plasma/widgets/vboxlayout.h"
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//#include "stackblur_shadows.cpp"
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namespace Plasma
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{
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class Applet::Private
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{
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public:
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Private(KService::Ptr service, int uniqueID)
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: appletId(uniqueID),
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globalConfig(0),
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appletConfig(0),
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appletDescription(service),
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package(0),
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background(0),
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failureText(0),
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scriptEngine(0),
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kioskImmutable(false),
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immutable(false),
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hasConfigurationInterface(false),
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failed(false),
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canMove(true)
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{
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if (appletId == 0) {
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appletId = nextId();
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}
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if (appletId > s_maxAppletId) {
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s_maxAppletId = appletId;
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}
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}
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~Private()
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{
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foreach ( const QString& engine, loadedEngines ) {
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DataEngineManager::self()->unloadDataEngine( engine );
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}
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delete background;
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delete package;
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}
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void init(Applet* applet)
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{
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kioskImmutable = applet->globalConfig().isImmutable() ||
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applet->config().isImmutable();
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applet->setImmutable(kioskImmutable);
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if (!appletDescription.isValid()) {
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applet->setFailedToLaunch(true);
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return;
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}
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QString language = appletDescription.property("X-Plasma-Language").toString();
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// we have a scripted plasmoid
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if (!language.isEmpty()) {
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// find where the Package is
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QString path = KStandardDirs::locate("appdata",
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"plasmoids/" +
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appletDescription.pluginName());
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if (!path.isEmpty()) {
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// create the package and see if we have something real
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package = new Package(path,
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appletDescription.pluginName(),
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PlasmoidStructure());
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if (package->isValid()) {
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// now we try and set up the script engine.
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// it will be parented to this applet and so will get
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// deleted when the applet does
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scriptEngine = ScriptEngine::load(language, applet);
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if (!scriptEngine) {
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delete package;
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package = 0;
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}
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} else {
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delete package;
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package = 0;
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}
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if (!package) {
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applet->setFailedToLaunch(true);
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}
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}
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}
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}
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void paintBackground(QPainter* p, Applet* q)
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{
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//TODO: we should cache this background rather that repaint it over and over
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QSize contents = contentSize(q).toSize();
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const int contentWidth = contents.width();
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const int contentHeight = contents.height();
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#if 0
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// this could be used to draw a dynamic shadow
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QImage image(w, h, QImage::Format_ARGB32_Premultiplied);
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QPainter* p = new QPainter(&image);
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p->setCompositionMode(QPainter::CompositionMode_Source);
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#endif
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p->setRenderHint(QPainter::SmoothPixmapTransform);
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background->resize();
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const int topHeight = background->elementSize("top").height();
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const int topWidth = background->elementSize("top").width();
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const int leftWidth = background->elementSize("left").width();
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const int leftHeight = background->elementSize("left").height();
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const int rightWidth = background->elementSize("right").width();
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const int bottomHeight = background->elementSize("bottom").height();
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//const int lrWidths = leftWidth + rightWidth;
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//const int tbHeights = topHeight + bottomHeight;
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// contents top-left corner is (0,0). We need to draw up and left of that
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const int topOffset = 0 - topHeight;
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const int leftOffset = 0 - leftWidth;
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const int rightOffset = contentWidth;
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const int bottomOffset = contentHeight;
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const int contentTop = 0;
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const int contentLeft = 0;
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background->paint(p, QRect(leftOffset, topOffset, leftWidth, topHeight), "topleft");
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background->paint(p, QRect(rightOffset, topOffset, rightWidth, topHeight), "topright");
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background->paint(p, QRect(leftOffset, bottomOffset, leftWidth, bottomHeight), "bottomleft");
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background->paint(p, QRect(rightOffset, bottomOffset, rightWidth, bottomHeight), "bottomright");
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QPixmap left(leftWidth, leftHeight);
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left.fill(Qt::transparent);
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{
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QPainter sidePainter(&left);
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sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
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background->paint(&sidePainter, QPoint(0, 0), "left");
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}
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p->drawTiledPixmap(QRect(leftOffset, contentTop, leftWidth, contentHeight), left);
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QPixmap right(rightWidth, leftHeight);
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right.fill(Qt::transparent);
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{
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QPainter sidePainter(&right);
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sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
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background->paint(&sidePainter, QPoint(0, 0), "right");
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}
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p->drawTiledPixmap(QRect(rightOffset, contentTop, rightWidth, contentHeight), right);
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QPixmap top(topWidth, topHeight);
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top.fill(Qt::transparent);
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{
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QPainter sidePainter(&top);
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sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
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background->paint(&sidePainter, QPoint(0, 0), "top");
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}
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p->drawTiledPixmap(QRect(contentLeft, topOffset, contentWidth, topHeight), top);
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QPixmap bottom(topWidth, bottomHeight);
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bottom.fill(Qt::transparent);
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{
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QPainter sidePainter(&bottom);
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sidePainter.setCompositionMode(QPainter::CompositionMode_Source);
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background->paint(&sidePainter, QPoint(0, 0), "bottom");
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}
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p->drawTiledPixmap(QRect(contentLeft, bottomOffset, contentWidth, bottomHeight), bottom);
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background->paint(p, QRect(contentLeft, contentTop, contentWidth + 1, contentHeight + 1), "center");
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}
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void paintHover(QPainter* painter, Applet* q)
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{
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//TODO draw hover interface for close, configure, info and move
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}
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QSizeF contentSize(const Applet* q)
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{
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if (scriptEngine) {
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return scriptEngine->size();
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}
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if (failureText) {
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return failureText->geometry().size();
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}
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return q->contentSize();
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}
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static uint nextId()
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{
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++s_maxAppletId;
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return s_maxAppletId;
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}
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//TODO: examine the usage of memory here; there's a pretty large
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// number of members at this point.
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uint appletId;
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KSharedConfig::Ptr globalConfig;
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KSharedConfig::Ptr appletConfig;
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KPluginInfo appletDescription;
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Package* package;
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QList<QObject*> watchedForFocus;
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QStringList loadedEngines;
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static uint s_maxAppletId;
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Plasma::Svg *background;
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Plasma::LineEdit *failureText;
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ScriptEngine* scriptEngine;
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bool kioskImmutable : 1;
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bool immutable : 1;
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bool hasConfigurationInterface : 1;
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bool failed : 1;
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bool canMove : 1;
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};
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uint Applet::Private::s_maxAppletId = 0;
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Applet::Applet(QGraphicsItem *parent,
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const QString& serviceID,
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uint appletId)
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: QObject(0),
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Widget(parent),
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d(new Private(KService::serviceByStorageId(serviceID), appletId))
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{
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d->init(this);
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}
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Applet::Applet(QObject* parent, const QStringList& args)
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: QObject(parent),
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Widget(0),
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d(new Private(KService::serviceByStorageId(args.count() > 0 ? args[0] : QString()),
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args.count() > 1 ? args[1].toInt() : 0))
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{
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d->init(this);
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// the brain damage seen in the initialization list is due to the
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// inflexibility of KService::createInstance
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}
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Applet::~Applet()
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{
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needsFocus( false );
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delete d;
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}
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KConfigGroup Applet::config() const
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{
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if (!d->appletConfig) {
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QString file = KStandardDirs::locateLocal( "appdata",
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"applets/" + instanceName() + "rc",
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true );
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d->appletConfig = KSharedConfig::openConfig( file );
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}
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return KConfigGroup(d->appletConfig, "General");
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}
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KConfigGroup Applet::config(const QString& group) const
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{
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KConfigGroup cg = config();
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cg.changeGroup(instanceName() + '-' + group);
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return cg;
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}
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KConfigGroup Applet::globalConfig() const
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{
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if ( !d->globalConfig ) {
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QString file = KStandardDirs::locateLocal( "config", "plasma_" + globalName() + "rc" );
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d->globalConfig = KSharedConfig::openConfig( file );
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}
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return KConfigGroup(d->globalConfig, "General");
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}
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DataEngine* Applet::dataEngine(const QString& name) const
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{
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int index = d->loadedEngines.indexOf(name);
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if (index != -1) {
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return DataEngineManager::self()->dataEngine(name);
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}
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DataEngine* engine = DataEngineManager::self()->loadDataEngine(name);
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if (engine->isValid()) {
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d->loadedEngines.append(name);
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}
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return engine;
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}
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const Package* Applet::package() const
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{
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return d->package;
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}
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void Applet::constraintsUpdated()
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{
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kDebug() << "Applet::constraintsUpdate(): constraints are FormFactor: " << formFactor() << ", Location: " << location() << endl;
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}
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QString Applet::name() const
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{
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if (!d->appletDescription.isValid()) {
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return i18n("Unknown Applet");
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}
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return d->appletDescription.name();
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}
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QString Applet::icon() const
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{
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if (!d->appletDescription.isValid()) {
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return QString();
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}
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return d->appletDescription.icon();
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}
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QString Applet::category() const
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{
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if (!d->appletDescription.isValid()) {
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return i18n("Misc");
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}
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return d->appletDescription.property("X-KDE-PluginInfo-Category").toString();
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}
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QString Applet::category(const KPluginInfo& applet)
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{
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return applet.property("X-KDE-PluginInfo-Category").toString();
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}
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QString Applet::category(const QString& appletName)
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{
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if (appletName.isEmpty()) {
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return QString();
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}
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QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(appletName);
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KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
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if (offers.isEmpty()) {
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return QString();
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}
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return offers.first()->property("X-KDE-PluginInfo-Category").toString();
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}
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bool Applet::isImmutable() const
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{
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return d->immutable || d->kioskImmutable;
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}
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void Applet::setImmutable(bool immutable)
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{
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d->immutable = immutable;
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QGraphicsItem::GraphicsItemFlags f = flags();
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if (immutable) {
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f ^= QGraphicsItem::ItemIsMovable;
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} else if (!d->kioskImmutable && (!scene() || !static_cast<Corona*>(scene())->isImmutable())) {
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f |= QGraphicsItem::ItemIsMovable;
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}
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setFlags(f);
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}
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bool Applet::drawStandardBackground()
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{
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return d->background != 0;
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}
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void Applet::setDrawStandardBackground(bool drawBackground)
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{
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if (drawBackground) {
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if (!d->background) {
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d->background = new Plasma::Svg("widgets/background");
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}
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} else {
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delete d->background;
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d->background = 0;
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}
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}
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bool Applet::failedToLaunch() const
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{
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return d->failed;
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}
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QString visibleFailureText(const QString& reason)
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{
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QString text;
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if (reason.isEmpty()) {
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text = i18n("This object could not be created.");
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} else {
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text = i18n("This object could not be created for the following reason:<p>%1</p>", reason);
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}
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return text;
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}
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void Applet::setFailedToLaunch(bool failed, const QString& reason)
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{
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if (d->failed == failed) {
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if (d->failureText) {
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d->failureText->setHtml(visibleFailureText(reason));
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}
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return;
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}
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d->failed = failed;
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prepareGeometryChange();
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qDeleteAll(QGraphicsItem::children());
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delete layout();
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if (failed) {
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setDrawStandardBackground(failed || d->background != 0);
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Layout* failureLayout = new VBoxLayout(this);
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d->failureText = new LineEdit(this, scene());
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d->failureText->setFlags(0);
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d->failureText->setHtml(visibleFailureText(reason));
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failureLayout->addItem(d->failureText);
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} else {
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d->failureText = 0;
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}
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update();
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}
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int Applet::type() const
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{
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return Type;
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}
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QRectF Applet::boundingRect () const
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{
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QRectF rect = QRectF(QPointF(0,0), d->contentSize(this));
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if (!d->background) {
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return rect;
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}
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const int topHeight = d->background->elementSize("top").height();
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const int leftWidth = d->background->elementSize("left").width();
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const int rightWidth = d->background->elementSize("right").width();
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const int bottomHeight = d->background->elementSize("bottom").height();
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rect.adjust(0 - leftWidth, 0 - topHeight, rightWidth, bottomHeight);
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return rect;
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}
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QColor Applet::color() const
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{
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// TODO: add more colors for more categories and
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// maybe read from config?
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if (category() == "Date and Time") {
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return QColor(30, 60, 255, 200);
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} else {
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return QColor(20, 20, 20, 200);
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}
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}
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void Applet::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(widget)
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qreal zoomLevel = painter->transform().m11() / transform().m11();
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if (zoomLevel == scalingFactor(Plasma::DesktopZoom)) { // Show Desktop
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if (d->background) {
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d->paintBackground(painter, this);
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}
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if (d->failed) {
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return;
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}
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paintInterface(painter, option, QRect(QPoint(0,0), d->contentSize(this).toSize()));
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d->paintHover(painter, this);
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} else if (zoomLevel == scalingFactor(Plasma::GroupZoom)) { // Show Groups + Applet outline
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//TODO: make pretty.
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painter->setBrush(QBrush(color(), Qt::SolidPattern));
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painter->drawRoundRect(boundingRect());
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int iconDim = KIconLoader().currentSize(K3Icon::Desktop);
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int midX = (boundingRect().width() / 2) - (iconDim / 2);
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int midY = (boundingRect().height() / 2 )- (iconDim / 2);
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KIcon(icon()).paint(painter, midX, midY, iconDim, iconDim);
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}/* else if (zoomLevel == scalingFactor(Plasma::OverviewZoom)) { //Show Groups only
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} */
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}
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void Applet::paintInterface(QPainter *painter, const QStyleOptionGraphicsItem *option,
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const QRect & contentsRect)
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{
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Q_UNUSED(contentsRect)
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if (d->scriptEngine) {
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d->scriptEngine->paintInterface(painter, option);
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} else {
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//kDebug() << "Applet::paintInterface() default impl" << endl;
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}
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}
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FormFactor Applet::formFactor() const
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{
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if (!scene()) {
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return Plasma::Planar;
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}
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return static_cast<Corona*>(scene())->formFactor();
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}
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Location Applet::location() const
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{
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if (!scene()) {
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return Plasma::Desktop;
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}
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return static_cast<Corona*>(scene())->location();
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}
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|
|
|
QSizeF Applet::contentSize() const
|
|
{
|
|
//FIXME: this should be big enough to allow for the failure text?
|
|
return QSizeF(300, 300);
|
|
}
|
|
|
|
QString Applet::globalName() const
|
|
{
|
|
if (!d->appletDescription.isValid()) {
|
|
return QString();
|
|
}
|
|
|
|
return d->appletDescription.service()->library();
|
|
}
|
|
|
|
QString Applet::instanceName() const
|
|
{
|
|
if (!d->appletDescription.isValid()) {
|
|
return QString();
|
|
}
|
|
|
|
return d->appletDescription.service()->library() + QString::number( d->appletId );
|
|
}
|
|
|
|
void Applet::watchForFocus(QObject *widget, bool watch)
|
|
{
|
|
if ( !widget ) {
|
|
return;
|
|
}
|
|
|
|
int index = d->watchedForFocus.indexOf(widget);
|
|
if ( watch ) {
|
|
if ( index == -1 ) {
|
|
d->watchedForFocus.append( widget );
|
|
widget->installEventFilter( this );
|
|
}
|
|
} else if ( index != -1 ) {
|
|
d->watchedForFocus.removeAt( index );
|
|
widget->removeEventFilter( this );
|
|
}
|
|
}
|
|
|
|
void Applet::needsFocus(bool focus)
|
|
{
|
|
if (focus == QGraphicsItem::hasFocus()) {
|
|
return;
|
|
}
|
|
|
|
emit requestFocus(focus);
|
|
}
|
|
|
|
bool Applet::hasConfigurationInterface()
|
|
{
|
|
return d->hasConfigurationInterface;
|
|
}
|
|
|
|
void Applet::setHasConfigurationInterface(bool hasInterface)
|
|
{
|
|
d->hasConfigurationInterface = hasInterface;
|
|
}
|
|
|
|
bool Applet::eventFilter( QObject *o, QEvent * e )
|
|
{
|
|
if ( !d->watchedForFocus.contains( o ) )
|
|
{
|
|
if ( e->type() == QEvent::MouseButtonRelease ||
|
|
e->type() == QEvent::FocusIn ) {
|
|
needsFocus( true );
|
|
} else if ( e->type() == QEvent::FocusOut ) {
|
|
needsFocus( false );
|
|
}
|
|
}
|
|
|
|
return QObject::eventFilter(o, e);
|
|
}
|
|
|
|
void Applet::showConfigurationInterface()
|
|
{
|
|
}
|
|
|
|
KPluginInfo::List Applet::knownApplets(const QString &category,
|
|
const QString &parentApp)
|
|
{
|
|
QString constraint;
|
|
|
|
if (parentApp.isEmpty()) {
|
|
constraint.append("not exist [X-KDE-ParentApp]");
|
|
} else {
|
|
constraint.append("[X-KDE-ParentApp] == '").append(parentApp).append("'");
|
|
}
|
|
|
|
if (!category.isEmpty()) {
|
|
if (!constraint.isEmpty()) {
|
|
constraint.append(" and ");
|
|
}
|
|
|
|
constraint.append("[X-KDE-PluginInfo-Category] == '").append(category).append("'");
|
|
if (category == "Misc") {
|
|
constraint.append(" or (not exist [X-KDE-PluginInfo-Category] or [X-KDE-PluginInfo-Category] == '')");
|
|
}
|
|
}
|
|
|
|
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
|
|
//kDebug() << "Applet::knownApplets constraint was '" << constraint << "' which got us " << offers.count() << " matches" << endl;
|
|
return KPluginInfo::fromServices(offers);
|
|
}
|
|
|
|
QStringList Applet::knownCategories(const QString &parentApp)
|
|
{
|
|
QString constraint = "exist [X-KDE-PluginInfo-Category]";
|
|
|
|
if (parentApp.isEmpty()) {
|
|
constraint.append(" and not exist [X-KDE-ParentApp]");
|
|
} else {
|
|
constraint.append(" and [X-KDE-ParentApp] == '").append(parentApp).append("'");
|
|
}
|
|
|
|
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
|
|
QStringList categories;
|
|
foreach (KService::Ptr applet, offers) {
|
|
QString appletCategory = applet->property("X-KDE-PluginInfo-Category").toString();
|
|
kDebug() << " and we have " << appletCategory << endl;
|
|
if (appletCategory.isEmpty()) {
|
|
if (!categories.contains(i18n("Misc"))) {
|
|
categories << i18n("Misc");
|
|
}
|
|
} else if (!categories.contains(appletCategory)) {
|
|
categories << appletCategory;
|
|
}
|
|
}
|
|
|
|
categories.sort();
|
|
return categories;
|
|
}
|
|
|
|
Applet* Applet::loadApplet(const QString& appletName, uint appletId, const QStringList& args)
|
|
{
|
|
if (appletName.isEmpty()) {
|
|
return 0;
|
|
}
|
|
|
|
QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(appletName);
|
|
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Applet", constraint);
|
|
|
|
if (offers.isEmpty()) {
|
|
//TODO: what would be -really- cool is offer to try and download the applet
|
|
// from the network at this point
|
|
kDebug() << "Applet::loadApplet: offers is empty for \"" << appletName << "\"" << endl;
|
|
return 0;
|
|
}
|
|
|
|
if (appletId == 0) {
|
|
appletId = Private::nextId();
|
|
}
|
|
|
|
QStringList allArgs;
|
|
QString id;
|
|
id.setNum(appletId);
|
|
allArgs << offers.first()->storageId() << id << args;
|
|
Applet* applet = KService::createInstance<Plasma::Applet>(offers.first(), 0, allArgs);
|
|
|
|
if (!applet) {
|
|
kDebug() << "Couldn't load applet \"" << appletName << "\"!" << endl;
|
|
}
|
|
|
|
return applet;
|
|
}
|
|
|
|
Applet* Applet::loadApplet(const KPluginInfo& info, uint appletId, const QStringList& args)
|
|
{
|
|
if (!info.isValid()) {
|
|
return 0;
|
|
}
|
|
|
|
return loadApplet(info.pluginName(), appletId, args);
|
|
}
|
|
|
|
void Applet::slotLockApplet(bool lock)
|
|
{
|
|
if(lock)
|
|
setFlags( flags()^QGraphicsItem::ItemIsMovable);
|
|
else
|
|
setFlags( flags() | QGraphicsItem::ItemIsMovable);
|
|
}
|
|
|
|
bool Applet::lockApplet() const
|
|
{
|
|
return !(flags() & QGraphicsItem::ItemIsMovable);
|
|
}
|
|
|
|
void Applet::setLockApplet(bool lock)
|
|
{
|
|
slotLockApplet(lock);
|
|
}
|
|
|
|
bool Applet::canBeMoved() const
|
|
{
|
|
return d->canMove;
|
|
}
|
|
|
|
void Applet::setCanBeMoved( bool move)
|
|
{
|
|
d->canMove = move;
|
|
}
|
|
|
|
} // Plasma namespace
|
|
|
|
#include "applet.moc"
|