htmlview.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 313 行 · 第 1/2 页

// (c) 2005 Christian Muehlhaeuser <[e-mail]>
// (c) 2006 Seb Ruiz <[e-mail]>
// License: GNU General Public License V2


#include "amarok.h"
#include "amarokconfig.h"
#include "app.h"
#include "contextbrowser.h"
#include "htmlview.h"
#include "playlist.h"      //appendMedia()

#include <qclipboard.h>
#include <qfile.h> // External CSS opening
#include <qimage.h> // External CSS opening

#include <kapplication.h> //kapp
#include <kactioncollection.h>
#include <kglobal.h> //kapp
#include <kimageeffect.h> // gradient background image
#include <kpopupmenu.h>
#include <kstandarddirs.h> //locate file
#include <ktempfile.h>

KTempFile *HTMLView::m_bgGradientImage = 0;
KTempFile *HTMLView::m_headerGradientImage = 0;
KTempFile *HTMLView::m_shadowGradientImage = 0;
int HTMLView::m_instances = 0;

HTMLView::HTMLView( QWidget *parentWidget, const char *widgetname, const bool DNDEnabled, const bool JScriptEnabled )
        : KHTMLPart( parentWidget, widgetname )
{
    m_instances++;
    setJavaEnabled( false );
    setPluginsEnabled( false );

    setDNDEnabled( DNDEnabled );
    setJScriptEnabled( JScriptEnabled );

    KActionCollection* ac = actionCollection();
    ac->setAutoConnectShortcuts( true );
    m_copy = KStdAction::copy( this, SLOT( copyText() ), ac, "htmlview_copy" );
    m_selectAll = KStdAction::selectAll( this, SLOT( selectAll() ), ac, "htmlview_select_all" );
    {
        KPopupMenu m;
        m_copy->plug( &m );
        m_selectAll->plug( &m );

        m_copy->unplug( &m );
        m_selectAll->unplug( &m );
    }

    connect( this, SIGNAL( selectionChanged() ), SLOT( enableCopyAction() ) );
    enableCopyAction();
}


HTMLView::~HTMLView()
{
    m_instances--;
    if ( m_instances < 1 ) {
        delete m_bgGradientImage;
        delete m_headerGradientImage;
        delete m_shadowGradientImage;
    }
}

void
HTMLView::enableCopyAction()
{
    m_copy->setEnabled( hasSelection() );
}

void
HTMLView::selectAll()
{
    KHTMLPart::selectAll();
}

void
HTMLView::copyText()
{
    QString text = selectedText();

    // Copy both to clipboard and X11-selection
    QApplication::clipboard()->setText( text, QClipboard::Clipboard );
    QApplication::clipboard()->setText( text, QClipboard::Selection );
}

void HTMLView::paletteChange() {
    delete m_bgGradientImage;
    delete m_headerGradientImage;
    delete m_shadowGradientImage;
    m_bgGradientImage = m_headerGradientImage = m_shadowGradientImage = 0;
}

QString
HTMLView::loadStyleSheet()
{
    QString themeName = AmarokConfig::contextBrowserStyleSheet().latin1();
    const QString file = kapp->dirs()->findResource( "data","amarok/themes/" + themeName + "/stylesheet.css" );

    QString styleSheet;
    if ( themeName != "Default" && QFile::exists( file ) )
    {
        const QString CSSLocation = kapp->dirs()->findResource( "data","amarok/themes/" + themeName + "/stylesheet.css" );
        QFile ExternalCSS( CSSLocation );
        if ( !ExternalCSS.open( IO_ReadOnly ) )
            return QString(); //FIXME: should actually return the default style sheet, then

        const QString pxSize = QString::number( ContextBrowser::instance()->fontMetrics().height() - 4 );
        const QString fontFamily = AmarokConfig::useCustomFonts() ?
                                        AmarokConfig::contextBrowserFont().family() :
                                        QApplication::font().family();
        const QString text   = ContextBrowser::instance()->colorGroup().text().name();
        const QString link   = ContextBrowser::instance()->colorGroup().link().name();
        const QString fg     = ContextBrowser::instance()->colorGroup().highlightedText().name();
        const QString bg     = ContextBrowser::instance()->colorGroup().highlight().name();
        const QString base   = ContextBrowser::instance()->colorGroup().base().name();
        const QColor bgColor = ContextBrowser::instance()->colorGroup().highlight();
        QColor gradientColor = bgColor;

        //we have to set the color for body due to a KHTML bug
        //KHTML sets the base color but not the text color
        styleSheet = QString( "body { margin: 8px; font-size: %1px; color: %2; background-color: %3; font-family: %4; }" )
                .arg( pxSize )
                .arg( text )
                .arg( AmarokConfig::schemeAmarok() ? fg : gradientColor.name() )
                .arg( fontFamily );

        QTextStream eCSSts( &ExternalCSS );
        QString tmpCSS = eCSSts.read();
        ExternalCSS.close();

        tmpCSS.replace( "./", KURL::fromPathOrURL( CSSLocation ).directory( false ) );
        tmpCSS.replace( "AMAROK_FONTSIZE-2", pxSize );
        tmpCSS.replace( "AMAROK_FONTSIZE", pxSize );
        tmpCSS.replace( "AMAROK_FONTSIZE+2", pxSize );
        tmpCSS.replace( "AMAROK_FONTFAMILY", fontFamily );
        tmpCSS.replace( "AMAROK_TEXTCOLOR", text );
        tmpCSS.replace( "AMAROK_LINKCOLOR", link );
        tmpCSS.replace( "AMAROK_BGCOLOR", bg );
        tmpCSS.replace( "AMAROK_FGCOLOR", fg );
        tmpCSS.replace( "AMAROK_BASECOLOR", base );
        tmpCSS.replace( "AMAROK_DARKBASECOLOR", ContextBrowser::instance()->colorGroup().base().dark( 120 ).name() );
        tmpCSS.replace( "AMAROK_GRADIENTCOLOR", gradientColor.name() );

        styleSheet += tmpCSS;
    }
    else
    {
        int pxSize = ContextBrowser::instance()->fontMetrics().height() - 4;
        const QString fontFamily = AmarokConfig::useCustomFonts() ? AmarokConfig::contextBrowserFont().family() : QApplication::font().family();
        const QString text = ContextBrowser::instance()->colorGroup().text().name();
        const QString link = ContextBrowser::instance()->colorGroup().link().name();
        const QString fg   = ContextBrowser::instance()->colorGroup().highlightedText().name();
        const QString bg   = ContextBrowser::instance()->colorGroup().highlight().name();