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libplasma

label.cpp

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00001 /*
00002  *   Copyright 2008 Aaron Seigo <aseigo@kde.org>
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 "label.h"
00021 
00022 #include <QLabel>
00023 #include <QPainter>
00024 #include <QDir>
00025 
00026 #include <KMimeType>
00027 
00028 #include "theme.h"
00029 #include "svg.h"
00030 
00031 namespace Plasma
00032 {
00033 
00034 class LabelPrivate
00035 {
00036 public:
00037     LabelPrivate(Label *label)
00038         : q(label),
00039           svg(0)
00040     {
00041     }
00042 
00043     ~LabelPrivate()
00044     {
00045         delete svg;
00046     }
00047 
00048     void setPixmap(Label *q)
00049     {
00050         if (imagePath.isEmpty()) {
00051             return;
00052         }
00053 
00054         KMimeType::Ptr mime = KMimeType::findByPath(absImagePath);
00055         QPixmap pm(q->size().toSize());
00056 
00057         if (mime->is("image/svg+xml")) {
00058             svg = new Svg();
00059             QPainter p(&pm);
00060             svg->paint(&p, pm.rect());
00061         } else {
00062             pm = QPixmap(absImagePath);
00063         }
00064 
00065         static_cast<QLabel*>(q->widget())->setPixmap(pm);
00066     }
00067 
00068     void setPalette()
00069     {
00070         QLabel *native = q->nativeWidget();
00071         QColor color = Theme::defaultTheme()->color(Theme::TextColor);
00072         QPalette p = native->palette();
00073         p.setColor(QPalette::Normal, QPalette::WindowText, color);
00074         p.setColor(QPalette::Inactive, QPalette::WindowText, color);
00075         native->setPalette(p);
00076     }
00077 
00078     Label *q;
00079     QString imagePath;
00080     QString absImagePath;
00081     Svg *svg;
00082 };
00083 
00084 Label::Label(QGraphicsWidget *parent)
00085     : QGraphicsProxyWidget(parent),
00086       d(new LabelPrivate(this))
00087 {
00088     QLabel* native = new QLabel;
00089 
00090     connect(Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(setPalette()));
00091     native->setAttribute(Qt::WA_NoSystemBackground);
00092     native->setWordWrap(true);
00093     setWidget(native);
00094     d->setPalette();
00095 }
00096 
00097 Label::~Label()
00098 {
00099     delete d;
00100 }
00101 
00102 void Label::setText(const QString &text)
00103 {
00104     static_cast<QLabel*>(widget())->setText(text);
00105 }
00106 
00107 QString Label::text() const
00108 {
00109     return static_cast<QLabel*>(widget())->text();
00110 }
00111 
00112 void Label::setImage(const QString &path)
00113 {
00114     if (d->imagePath == path) {
00115         return;
00116     }
00117 
00118     delete d->svg;
00119     d->svg = 0;
00120     d->imagePath = path;
00121 
00122     bool absolutePath = !path.isEmpty() && 
00123                         #ifdef Q_WS_WIN
00124                             !QDir::isRelativePath(path)
00125                         #else
00126                             (path[0] == '/' || path.startsWith(":/"))
00127                         #endif
00128         ;
00129 
00130     if (absolutePath) {
00131         d->absImagePath = path;
00132     } else {
00133         //TODO: package support
00134         d->absImagePath = Theme::defaultTheme()->imagePath(path);
00135     }
00136 
00137     d->setPixmap(this);
00138 }
00139 
00140 QString Label::image() const
00141 {
00142     return d->imagePath;
00143 }
00144 
00145 void Label::setStyleSheet(const QString &stylesheet)
00146 {
00147     widget()->setStyleSheet(stylesheet);
00148 }
00149 
00150 QString Label::styleSheet()
00151 {
00152     return widget()->styleSheet();
00153 }
00154 
00155 QLabel* Label::nativeWidget() const
00156 {
00157     return static_cast<QLabel*>(widget());
00158 }
00159 
00160 void Label::dataUpdated(const QString &sourceName, const Plasma::DataEngine::Data &data)
00161 {
00162     Q_UNUSED(sourceName)
00163 
00164     QStringList texts;
00165     foreach (const QVariant& v, data) {
00166         if (v.canConvert(QVariant::String)) {
00167             texts << v.toString();
00168         }
00169     }
00170 
00171     setText(texts.join(" "));
00172 }
00173 
00174 void Label::resizeEvent(QGraphicsSceneResizeEvent *event)
00175 {
00176     d->setPixmap(this);
00177     QGraphicsProxyWidget::resizeEvent(event);
00178 }
00179 
00180 } // namespace Plasma
00181 
00182 #include <label.moc>
00183 

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