platform/graphics/gtk/IconGtk.cpp

#elif PLATFORM(GTK)

typedef struct _GdkPixbuf GdkPixbuf;

#elif PLATFORM(GTK)

    Icon();

    GdkPixbuf* m_icon;

/*

 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.

 * Copyright (C) 2007 Holger Hans Peter Freyther

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "Icon.h"

#include "GraphicsContext.h"

#include "MIMETypeRegistry.h"

#include "PlatformContextCairo.h"

#include <gtk/gtk.h>

#include <wtf/RefPtr.h>

#include <wtf/text/CString.h>

namespace WebCore {

Icon::Icon()

    : m_icon(0)

{

}

Icon::~Icon()

{

    if (m_icon)

        g_object_unref(m_icon);

}

static String lookupIconName(String MIMEType)

{

    /*

     Lookup an appropriate icon according to either the Icon Naming Spec

     or conventional Gnome icon names respectively.

     See http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html

     The icon theme is probed for the following names:

     1. media-subtype

     2. gnome-mime-media-subtype

     3. media-x-generic

     4. gnome-mime-media

     In the worst case it falls back to the stock file icon.

    */

    int pos = MIMEType.find('/');

    if(pos >= 0) {

        String media = MIMEType.substring(0, pos);

        String subtype = MIMEType.substring(pos + 1);

        GtkIconTheme* iconTheme = gtk_icon_theme_get_default();

        String iconName = media + "-" + subtype;

        if(gtk_icon_theme_has_icon(iconTheme, iconName.utf8().data()))

            return iconName;

        iconName = "gnome-mime-" + media + "-" + subtype;

        if(gtk_icon_theme_has_icon(iconTheme, iconName.utf8().data()))

            return iconName;

        iconName = media + "-x-generic";

        if(gtk_icon_theme_has_icon(iconTheme, iconName.utf8().data()))

            return iconName;

        iconName = media + "gnome-mime-" + media;

        if(gtk_icon_theme_has_icon(iconTheme, iconName.utf8().data()))

            return iconName;

    }

    return "text-x-generic";

}

// FIXME: Move the code to ChromeClient::iconForFiles().

RefPtr<Icon> Icon::createIconForFiles(const Vector<String>& filenames)

{

    if (filenames.isEmpty())

        return nullptr;

    if (filenames.size() == 1) {

        if (!g_path_skip_root(filenames[0].utf8().data()))

            return nullptr;

        String MIMEType = MIMETypeRegistry::getMIMETypeForPath(filenames[0]);

        String iconName = lookupIconName(MIMEType);

        RefPtr<Icon> icon = adoptRef(new Icon);

        icon->m_icon = gtk_icon_theme_load_icon(gtk_icon_theme_get_default(), iconName.utf8().data(), 16, GTK_ICON_LOOKUP_USE_BUILTIN, 0);

        if (!icon->m_icon)

            return nullptr;

        return icon;

    }

    //FIXME: Implement this

    return 0;

}

void Icon::paint(GraphicsContext& context, const FloatRect& rect)

{

    if (context.paintingDisabled())

        return;

    // TODO: Scale/clip the image if necessary.

    cairo_t* cr = context.platformContext()->cr();

    cairo_save(cr);

    gdk_cairo_set_source_pixbuf(cr, m_icon, rect.x(), rect.y());

    cairo_paint(cr);

    cairo_restore(cr);

}

}