workspace/plasma/scriptengines/qedjescript/qedje_applet.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Artur Duque de Souza <morpheuz@gmail.com>       *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (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 General Public License     *
  15  *   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 <qedje_applet.h>
  21
  22 #include <QtGui/QGraphicsProxyWidget>
  23
  24 #include <Plasma/Package>
  25 #include <Plasma/Applet>
  26
  27 using namespace Plasma;
  28
  29 K_EXPORT_PLASMA_APPLETSCRIPTENGINE(qedjescripts, QEdjeAppletScript)
  30
  31 QEdjeAppletScript::QEdjeAppletScript(QObject *parent, const QVariantList &args)
  32 : Plasma::AppletScript(parent), dialog(0), config_widget(0),
  33     m_edje_file(""), m_edje_group(""), currentIndex(0)
  34 {
  35     Q_UNUSED(args);
  36 }
  37
  38 QEdjeAppletScript::~QEdjeAppletScript()
  39 {
  40     // the proxy gets the ownership of the applet
  41     // so we need to free the applet in order to avoid segfaults later
  42     proxy->setWidget(0);
  43
  44     // deleting setting's dialog stuff
  45     if (dialog) {
  46         delete previewWorld;
  47         delete previewCanvas;
  48         delete dialog;
  49     }
  50
  51     delete world;
  52     delete canvas;
  53 }
  54
  55 void QEdjeAppletScript::resizeAll(QSize size)
  56 {
  57     // minimum required size
  58     if (size == QSize(0, 0))
  59         size = QSize(100, 100);
  60
  61     // resize the applet and qzion's canvas
  62     QSizeF new_size = applet()->size() - applet()->contentsRect().size() + size;
  63     applet()->resize(new_size.toSize());
  64     canvas->resize(size);
  65 }
  66
  67 void QEdjeAppletScript::setup_canvas()
  68 {
  69     // we need a proxy so we can put qzion inside the applet
  70     proxy = new QGraphicsProxyWidget(applet());
  71     canvas = new QZionCanvas();
  72
  73     // create the canvasd (qzion) needed by qedje
  74     proxy->setWidget(canvas->widget());
  75     canvas->show();
  76
  77     // minimum size
  78     canvas->resize(100, 100);
  79 }
  80
  81 bool QEdjeAppletScript::init()
  82 {
  83     setup_canvas();
  84
  85     // set plasma options
  86     applet()->setBackgroundHints(Applet::TranslucentBackground);
  87     setHasConfigurationInterface(true);
  88
  89     // get config info
  90     KConfigGroup cg = applet()->config();
  91     m_edje_group = cg.readEntry("EdjeGroup", "");
  92
  93     // setup edje file
  94     m_edje_file = package()->filePath("edje_file");
  95
  96     // check groups
  97     m_groups_list = groupNamesFromFile(m_edje_file);
  98
  99     if (m_groups_list.count() <= 0)
 100         return false;
 101
 102     if (m_edje_group.isEmpty()) {
 103         m_edje_group = m_groups_list.first();
 104         currentIndex = 0;
 105     } else
 106         currentIndex = m_groups_list.indexOf(m_edje_group);
 107
 108     // create qedje object
 109     world = new QEdje(canvas, m_edje_file, m_edje_group);
 110
 111     // show qedje object and resize applet and plasmoid based on
 112     // the object's min size
 113     world->show();
 114     resizeAll(world->propMin());
 115     return true;
 116 }
 117
 118 void QEdjeAppletScript::showConfigurationInterface()
 119 {
 120     if (!dialog) {
 121         dialog = new KDialog();
 122         config_widget = new QWidget(dialog);
 123         previewCanvas = new QZionCanvas(config_widget);
 124
 125         dialog->setCaption(i18n("QEdje Applet Config"));
 126         dialog->setButtons(KDialog::Ok | KDialog::Cancel);
 127
 128         ui.setupUi(config_widget);
 129         ui.edje_groups->addItems(m_groups_list);
 130         ui.edje_groups->setCurrentIndex(ui.edje_groups->findText(m_edje_group));
 131         previewCanvas->widget()->setGeometry(ui.preview->frameGeometry());
 132
 133         // connect the signals
 134         connect(dialog, SIGNAL(okClicked()), this, SLOT(configChanged()));
 135         connect(ui.edje_groups, SIGNAL(activated(int)), this, SLOT(groupSelected(int)));
 136
 137         // show the config dialog
 138         dialog->setMainWidget(config_widget);
 139
 140         previewWorld = new QEdje(previewCanvas, m_edje_file, m_edje_group);
 141     }
 142
 143     dialog->show();
 144     previewWorld->show();
 145 }
 146
 147 void QEdjeAppletScript::groupSelected(int index)
 148 {
 149     if (index == currentIndex)
 150         return;
 151
 152     m_edje_group = m_groups_list[index];
 153     currentIndex = index;
 154
 155     previewWorld->hide();
 156     delete previewWorld;
 157
 158     previewWorld = new QEdje(previewCanvas, m_edje_file, m_edje_group);
 159     previewWorld->show();
 160 }
 161
 162 void QEdjeAppletScript::configChanged()
 163 {
 164     KConfigGroup cg = applet()->config();
 165     cg.writeEntry("EdjeGroup", m_edje_group);
 166
 167     world->hide();
 168     delete world;
 169
 170     world = new QEdje(canvas, m_edje_file, m_edje_group);
 171     world->show();
 172     resizeAll(world->propMin());
 173 }
 174
 175 void QEdjeAppletScript::paintInterface(QPainter *,
 176                                        const QStyleOptionGraphicsItem *,
 177                                        const QRect &contentsRect)
 178 {
 179     // make sure qzion have the correct geometry
 180     canvas->widget()->setGeometry(contentsRect);
 181 }
 182
 183 #include "qedje_applet.moc"