workspace/plasma/shells/screensaver/backgrounddialog.cpp

   1 /*
   2   Copyright (c) 2007 Paolo Capriotti <p.capriotti@gmail.com>
   3   Copyright (C) 2007 Ivan Cukic <ivan.cukic+kde@gmail.com>
   4   Copyright (c) 2008 by Petri Damsten <damu@iki.fi>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation; either version 2 of the License, or
   9   (at your option) any later version.
  10 */
  11
  12 #include "backgrounddialog.h"
  13
  14 #include <QPainter>
  15 //#include <QFile>
  16 //#include <QAbstractItemView>
  17 //#include <QStandardItemModel>
  18
  19 //#include <KStandardDirs>
  20 //#include <KDesktopFile>
  21 //#include <KColorScheme>
  22
  23 #include <Plasma/Containment>
  24 #include <Plasma/FrameSvg>
  25 #include <Plasma/Wallpaper>
  26 #include <Plasma/View>
  27 //#include <Plasma/Corona>
  28
  29 #include "plasmaapp.h"
  30 #include "wallpaperpreview.h"
  31
  32 typedef QPair<QString, QString> WallpaperInfo;
  33 Q_DECLARE_METATYPE(WallpaperInfo)
  34
  35
  36 BackgroundDialog::BackgroundDialog(const QSize& res, Plasma::Containment *c, Plasma::View* view, QWidget* parent)
  37     : KDialog(parent),
  38       m_wallpaper(0),
  39       m_view(view),
  40       m_containment(c),
  41       m_preview(0)
  42 {
  43     //setWindowIcon(KIcon("preferences-desktop-wallpaper"));
  44     setCaption(i18n("Background Settings"));
  45     showButtonSeparator(true);
  46     setButtons(Ok | Cancel | Apply);
  47
  48     QWidget * main = new QWidget(this);
  49     setupUi(main);
  50
  51     // Size of monitor image: 200x186
  52     // Geometry of "display" part of monitor image: (23,14)-[151x115]
  53     qreal previewRatio = (qreal)res.height() / (qreal)res.width();
  54     QSize monitorSize(200, int(200 * previewRatio));
  55
  56     Plasma::FrameSvg *svg = new Plasma::FrameSvg(this);
  57     svg->setImagePath("widgets/monitor");
  58     svg->resizeFrame(monitorSize);
  59     QPixmap monitorPix(monitorSize + QSize(0, svg->elementSize("base").height() - svg->marginSize(Plasma::BottomMargin)));
  60     monitorPix.fill(Qt::transparent);
  61
  62     QPainter painter(&monitorPix);
  63     QPoint standPosition(monitorSize.width()/2 - svg->elementSize("base").width()/2, svg->contentsRect().bottom());
  64     svg->paint(&painter, QRect(standPosition, svg->elementSize("base")), "base");
  65     svg->paintFrame(&painter);
  66     painter.end();
  67
  68     m_monitor->setPixmap(monitorPix);
  69     m_monitor->setWhatsThis(i18n(
  70         "This picture of a monitor contains a preview of "
  71         "what the current settings will look like on your desktop."));
  72     m_preview = new WallpaperPreview(m_monitor);
  73     m_preview->setGeometry(svg->contentsRect().toRect());
  74
  75     connect(this, SIGNAL(finished(int)), this, SLOT(cleanup()));
  76     connect(this, SIGNAL(okClicked()), this, SLOT(saveConfig()));
  77     connect(this, SIGNAL(applyClicked()), this, SLOT(saveConfig()));
  78
  79     setMainWidget(main);
  80     reloadConfig();
  81     adjustSize();
  82 }
  83
  84 BackgroundDialog::~BackgroundDialog()
  85 {
  86     cleanup();
  87 }
  88
  89 void BackgroundDialog::cleanup()
  90 {
  91     //FIXME could be bad if we get hidden and reshown
  92     delete m_wallpaper;
  93     m_wallpaper = 0;
  94 }
  95
  96 void BackgroundDialog::reloadConfig()
  97 {
  98     //transparency
  99     m_activeSlider->setValue(PlasmaApp::self()->activeOpacity() * 10);
 100     m_idleSlider->setValue(PlasmaApp::self()->idleOpacity() * 10);
 101
 102     label->setVisible(PlasmaApp::hasComposite());
 103     m_activeSlider->setVisible(PlasmaApp::hasComposite());
 104
 105     // Wallpaper
 106     disconnect(m_wallpaperMode, SIGNAL(currentIndexChanged(int)), this, SLOT(changeBackgroundMode(int)));
 107     int wallpaperIndex = 0;
 108
 109     bool doWallpaper = m_containment->drawWallpaper() && ! PlasmaApp::hasComposite();
 110     m_wallpaperLabel->setVisible(doWallpaper);
 111     m_wallpaperTypeLabel->setVisible(doWallpaper);
 112     m_wallpaperMode->setVisible(doWallpaper);
 113     m_wallpaperConfig->setVisible(doWallpaper);
 114     m_monitor->setVisible(doWallpaper);
 115     m_preview->setVisible(doWallpaper);
 116     if (doWallpaper) {
 117         // Load wallpaper plugins
 118         QString currentPlugin;
 119         QString currentMode;
 120
 121         Plasma::Wallpaper *currentWallpaper = m_containment->wallpaper();
 122         if (currentWallpaper) {
 123             currentPlugin = currentWallpaper->pluginName();
 124             currentMode = currentWallpaper->renderingMode().name();
 125         }
 126
 127         const KPluginInfo::List plugins = Plasma::Wallpaper::listWallpaperInfo();
 128         m_wallpaperMode->clear();
 129         int i = 0;
 130         QString placeholder = i18n("No Wallpaper");
 131         //m_wallpaperMode->addItem(KIcon(), i18n("No Wallpaper"),
 132         //                         QVariant::fromValue(WallpaperInfo(QString(), QString())));
 133         foreach (const KPluginInfo& info, plugins) {
 134             bool matches = info.pluginName() == currentPlugin;
 135             const QList<KServiceAction>& modes = info.service()->actions();
 136             if (modes.count() > 0) {
 137                 foreach (const KServiceAction& mode, modes) {
 138                     m_wallpaperMode->addItem(KIcon(mode.icon()), mode.text(),
 139                                     QVariant::fromValue(WallpaperInfo(info.pluginName(), mode.name())));
 140                     if (matches && mode.name() == currentMode) {
 141                         wallpaperIndex = i;
 142                     }
 143                     ++i;
 144                 }
 145             } else {
 146                 m_wallpaperMode->addItem(KIcon(info.icon()), info.name(),
 147                                 QVariant::fromValue(WallpaperInfo(info.pluginName(), QString())));
 148                 if (matches) {
 149                     wallpaperIndex = i;
 150                 }
 151                 ++i;
 152             }
 153         }
 154         m_wallpaperMode->setCurrentIndex(wallpaperIndex);
 155         changeBackgroundMode(wallpaperIndex);
 156     }
 157
 158     connect(m_wallpaperMode, SIGNAL(currentIndexChanged(int)), this, SLOT(changeBackgroundMode(int)));
 159 }
 160
 161 void BackgroundDialog::changeBackgroundMode(int mode)
 162 {
 163     kDebug();
 164     QWidget* w = 0;
 165     WallpaperInfo wallpaperInfo = m_wallpaperMode->itemData(mode).value<WallpaperInfo>();
 166
 167     if (!m_wallpaperConfig->layout()) {
 168         new QVBoxLayout(m_wallpaperConfig);
 169     }
 170
 171     if (m_wallpaperConfig->layout()->count() > 0) {
 172         delete dynamic_cast<QWidgetItem*>(m_wallpaperConfig->layout()->takeAt(0))->widget();
 173     }
 174
 175     if (m_wallpaper && m_wallpaper->pluginName() != wallpaperInfo.first) {
 176         delete m_wallpaper;
 177         m_wallpaper = 0;
 178     }
 179
 180     if (wallpaperInfo.first.isEmpty()) {
 181         return;
 182     }
 183
 184     if (!m_wallpaper) {
 185         m_wallpaper = Plasma::Wallpaper::load(wallpaperInfo.first);
 186         m_preview->setWallpaper(m_wallpaper);
 187     }
 188
 189     if (m_wallpaper) {
 190         m_wallpaper->setRenderingMode(wallpaperInfo.second);
 191         KConfigGroup cfg = wallpaperConfig(wallpaperInfo.first);
 192         kDebug() << "making a" << wallpaperInfo.first << "in mode" << wallpaperInfo.second;
 193         m_wallpaper->restore(cfg);
 194         w = m_wallpaper->createConfigurationInterface(m_wallpaperConfig);
 195     }
 196
 197     if (!w) {
 198         w = new QWidget(m_wallpaperConfig);
 199     }
 200
 201     m_wallpaperConfig->layout()->addWidget(w);
 202 }
 203
 204 KConfigGroup BackgroundDialog::wallpaperConfig(const QString &plugin)
 205 {
 206     Q_ASSERT(m_containment);
 207
 208     //FIXME: we have details about the structure of the containment config duplicated here!
 209     KConfigGroup cfg = m_containment->config();
 210     cfg = KConfigGroup(&cfg, "Wallpaper");
 211     return KConfigGroup(&cfg, plugin);
 212 }
 213
 214 void BackgroundDialog::saveConfig()
 215 {
 216     //transparency
 217     PlasmaApp::self()->setActiveOpacity(m_activeSlider->value() / 10.0);
 218     PlasmaApp::self()->setIdleOpacity(m_idleSlider->value() / 10.0);
 219
 220     // Wallpaper
 221     QString wallpaperPlugin = m_wallpaperMode->itemData(m_wallpaperMode->currentIndex()).value<WallpaperInfo>().first;
 222     QString wallpaperMode = m_wallpaperMode->itemData(m_wallpaperMode->currentIndex()).value<WallpaperInfo>().second;
 223
 224     Plasma::Wallpaper *currentWallpaper = m_containment->wallpaper();
 225     if (currentWallpaper) {
 226         KConfigGroup cfg = wallpaperConfig(currentWallpaper->pluginName());
 227         currentWallpaper->save(cfg);
 228     }
 229
 230     if (m_wallpaper) {
 231         KConfigGroup cfg = wallpaperConfig(m_wallpaper->pluginName());
 232         m_wallpaper->save(cfg);
 233     }
 234
 235     m_containment->setWallpaper(wallpaperPlugin, wallpaperMode);
 236 }