workspace/plasma/plasma/panelview.cpp

   1 /*
   2 *   Copyright 2007 by Matt Broadstone <mbroadst@kde.org>
   3 *   Copyright 2007 by Robert Knight <robertknight@gmail.com>
   4 *
   5 *   This program is free software; you can redistribute it and/or modify
   6 *   it under the terms of the GNU Library General Public License version 2,
   7 *   or (at your option) any later version.
   8 *
   9 *   This program is distributed in the hope that it will be useful,
  10 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 *   GNU General Public License for more details
  13 *
  14 *   You should have received a copy of the GNU Library General Public
  15 *   License along with this program; if not, write to the
  16 *   Free Software Foundation, Inc.,
  17 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18 */
  19
  20 #include "panelview.h"
  21
  22 #include <QApplication>
  23 #include <QDesktopWidget>
  24 #include <QTimeLine>
  25
  26 #include <KWindowSystem>
  27 #include <KDebug>
  28
  29 #include <plasma/containment.h>
  30 #include <plasma/corona.h>
  31 #include <plasma/plasma.h>
  32 #include <plasma/svg.h>
  33
  34 #include "plasmaapp.h"
  35
  36 PanelView::PanelView(Plasma::Containment *panel, QWidget *parent)
  37     : Plasma::View(panel, parent)
  38 {
  39     Q_ASSERT(qobject_cast<Plasma::Corona*>(panel->scene()));
  40     updatePanelGeometry();
  41
  42     if (containment()) {
  43         connect(containment(), SIGNAL(showAddWidgets()), this, SLOT(showAppletBrowser()));
  44     }
  45
  46     connect(panel, SIGNAL(geometryChanged()), this, SLOT(updatePanelGeometry()));
  47     kDebug() << "Panel geometry is" << panel->geometry();
  48
  49     // Graphics view setup
  50     setFrameStyle(QFrame::NoFrame);
  51     //setAutoFillBackground(true);
  52     //setDragMode(QGraphicsView::RubberBandDrag);
  53     //setCacheMode(QGraphicsView::CacheBackground);
  54     setInteractive(true);
  55     setAcceptDrops(true);
  56     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  57     setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
  58
  59     // KWin setup
  60     KWindowSystem::setType(winId(), NET::Dock);
  61     KWindowSystem::setState(winId(), NET::Sticky);
  62     KWindowSystem::setOnAllDesktops(winId(), true);
  63
  64     updateStruts();
  65 }
  66
  67
  68 void PanelView::setLocation(Plasma::Location loc)
  69 {
  70     containment()->setLocation(loc);
  71     updatePanelGeometry();
  72 }
  73
  74 Plasma::Location PanelView::location() const
  75 {
  76     return containment()->location();
  77 }
  78
  79 Plasma::Corona *PanelView::corona() const
  80 {
  81     return qobject_cast<Plasma::Corona*>(scene());
  82 }
  83
  84 void PanelView::updatePanelGeometry()
  85 {
  86     kDebug() << "New panel geometry is" << containment()->geometry();
  87     QSize size = containment()->size().toSize();
  88     QRect geom(QPoint(0,0), size);
  89     int screen = containment()->screen();
  90
  91     if (screen < 0) {
  92         //TODO: is there a valid use for -1 with a panel? floating maybe?
  93         screen = 0;
  94     }
  95
  96     QRect screenGeom = QApplication::desktop()->screenGeometry(screen);
  97
  98     //FIXME: we need to support center, left, right, etc.. perhaps
  99     //       pixel precision placed containments as well?
 100     switch (location()) {
 101         case Plasma::TopEdge:
 102             geom.moveTopLeft(screenGeom.topLeft());
 103             break;
 104         case Plasma::LeftEdge:
 105             geom.moveTopLeft(screenGeom.topLeft());
 106             break;
 107         case Plasma::RightEdge:
 108             geom.moveTopLeft(QPoint(screenGeom.right() - size.width() + 1, screenGeom.top()));
 109             break;
 110         case Plasma::BottomEdge:
 111         default:
 112             geom.moveTopLeft(QPoint(screenGeom.left(), screenGeom.bottom() - size.height() + 1));
 113             break;
 114     }
 115
 116     kDebug() << (QObject*)this << "thinks its panel is at " << geom;
 117     setGeometry(geom);
 118 }
 119
 120 void PanelView::showAppletBrowser()
 121 {
 122     PlasmaApp::self()->showAppletBrowser(containment());
 123 }
 124
 125 void PanelView::updateStruts()
 126 {
 127     NETExtendedStrut strut;
 128
 129     switch (location())
 130     {
 131         case Plasma::TopEdge:
 132             strut.top_width = height();
 133             strut.top_start = x();
 134             strut.top_end = x() + width() - 1;
 135             break;
 136
 137         case Plasma::BottomEdge:
 138             strut.bottom_width = height();
 139             strut.bottom_start = x();
 140             strut.bottom_end = x() + width() - 1;
 141             break;
 142
 143         case Plasma::RightEdge:
 144             strut.right_width = width();
 145             strut.right_start = y();
 146             strut.right_end = y() + height() - 1;
 147             break;
 148
 149         case Plasma::LeftEdge:
 150             strut.left_width = width();
 151             strut.left_start = y();
 152             strut.left_end = y() + height() - 1;
 153             break;
 154
 155         default:
 156             break;
 157     }
 158
 159     KWindowSystem::setExtendedStrut(winId(), strut.left_width,
 160                                              strut.left_start,
 161                                              strut.left_end,
 162                                              strut.right_width,
 163                                              strut.right_start,
 164                                              strut.right_end,
 165                                              strut.top_width,
 166                                              strut.top_start,
 167                                              strut.top_end,
 168                                              strut.bottom_width,
 169                                              strut.bottom_start,
 170                                              strut.bottom_end);
 171 }
 172
 173 void PanelView::moveEvent(QMoveEvent *event)
 174 {
 175     QWidget::moveEvent(event);
 176     updateStruts();
 177 }
 178
 179 void PanelView::resizeEvent(QResizeEvent *event)
 180 {
 181     QWidget::resizeEvent(event);
 182     updateStruts();
 183 }
 184
 185 #include "panelview.moc"
 186