pluginviewgtk.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
 * Copyright (C) 2008 Collabora Ltd. All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
 * 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 "PluginView.h"

#include "Document.h"
#include "DocumentLoader.h"
#include "Element.h"
#include "FrameLoader.h"
#include "FrameLoadRequest.h"
#include "FrameTree.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "Image.h"
#include "HTMLNames.h"
#include "HTMLPlugInElement.h"
#include "KeyboardEvent.h"
#include "MouseEvent.h"
#include "NotImplemented.h"
#include "Page.h"
#include "PlatformMouseEvent.h"
#include "PluginDebug.h"
#include "PluginPackage.h"
#include "RenderLayer.h"
#include "Settings.h"
#include "JSDOMBinding.h"
#include "ScriptController.h"
#include "npruntime_impl.h"
#include "runtime.h"
#include "runtime_root.h"
#include <runtime/JSLock.h>
#include <runtime/JSValue.h>

#include <gdkconfig.h>
#include <gtk/gtk.h>

#if PLATFORM(X11)
#include "gtk2xtbin.h"
#include <gdk/gdkx.h>
#endif
#ifdef GDK_WINDOWING_WIN32
#include "PluginMessageThrottlerWin.h"
#include <gdk/gdkwin32.h>
#endif

using JSC::ExecState;
using JSC::Interpreter;
using JSC::JSLock;
using JSC::JSObject;
using JSC::UString;

using std::min;

using namespace WTF;

namespace WebCore {

using namespace HTMLNames;

bool PluginView::dispatchNPEvent(NPEvent& event)
{
    // sanity check
    if (!m_plugin->pluginFuncs()->event)
        return false;

    PluginView::setCurrentPluginView(this);
    JSC::JSLock::DropAllLocks dropAllLocks(false);
    setCallingPlugin(true);

    bool accepted = m_plugin->pluginFuncs()->event(m_instance, &event);

    setCallingPlugin(false);
    PluginView::setCurrentPluginView(0);
    return accepted;
}

void PluginView::updatePluginWidget()
{
    if (!parent() || !m_isWindowed)
        return;

    ASSERT(parent()->isFrameView());
    FrameView* frameView = static_cast<FrameView*>(parent());

    IntRect oldWindowRect = m_windowRect;
    IntRect oldClipRect = m_clipRect;

    m_windowRect = IntRect(frameView->contentsToWindow(frameRect().location()), frameRect().size());
    m_clipRect = windowClipRect();
    m_clipRect.move(-m_windowRect.x(), -m_windowRect.y());

    if (platformPluginWidget() && (m_windowRect != oldWindowRect || m_clipRect != oldClipRect))
        setNPWindowIfNeeded();
}

void PluginView::setFocus()
{
    if (platformPluginWidget())
        gtk_widget_grab_focus(platformPluginWidget());

    Widget::setFocus();
}

void PluginView::show()
{
    setSelfVisible(true);

    if (isParentVisible() && platformPluginWidget())
        gtk_widget_show(platformPluginWidget());

    Widget::show();
}

void PluginView::hide()
{
    setSelfVisible(false);

    if (isParentVisible() && platformPluginWidget())
        gtk_widget_hide(platformPluginWidget());

    Widget::hide();
}

void PluginView::paint(GraphicsContext* context, const IntRect& rect)
{
    if (!m_isStarted) {
        paintMissingPluginIcon(context, rect);
        return;
    }

    if (context->paintingDisabled())
        return;

    setNPWindowIfNeeded();

    if (m_isWindowed)
        return;

    NPEvent npEvent;
    /* Need to synthesize Xevents here */

    m_npWindow.type = NPWindowTypeDrawable;

    ASSERT(parent()->isFrameView());

    if (!dispatchNPEvent(npEvent))
        LOG(Events, "PluginView::paint(): Paint event not accepted");
}

void PluginView::handleKeyboardEvent(KeyboardEvent* event)
{
    NPEvent npEvent;
    
    /* FIXME: Synthesize an XEvent to pass through */

    JSC::JSLock::DropAllLocks dropAllLocks(false);
    if (!dispatchNPEvent(npEvent))
        event->setDefaultHandled();
}

void PluginView::handleMouseEvent(MouseEvent* event)
{
    NPEvent npEvent;

    if (!m_isWindowed)
      return;

    /* FIXME: Synthesize an XEvent to pass through */
    IntPoint p = static_cast<FrameView*>(parent())->contentsToWindow(IntPoint(event->pageX(), event->pageY()));

    JSC::JSLock::DropAllLocks dropAllLocks(false);
    if (!dispatchNPEvent(npEvent))
        event->setDefaultHandled();
}

void PluginView::setParent(ScrollView* parent)
{
    Widget::setParent(parent);

    if (parent)
        init();
    else {
        if (!platformPluginWidget())
            return;
    }
}

void PluginView::setNPWindowRect(const IntRect&)
{
    setNPWindowIfNeeded();
}

void PluginView::setNPWindowIfNeeded()
{
    if (!m_isStarted || !parent() || !m_plugin->pluginFuncs()->setwindow)
        return;

    m_npWindow.x = m_windowRect.x();
    m_npWindow.y = m_windowRect.y();
    m_npWindow.width = m_windowRect.width();
    m_npWindow.height = m_windowRect.height();

    m_npWindow.clipRect.left = m_clipRect.x();
    m_npWindow.clipRect.top = m_clipRect.y();
    m_npWindow.clipRect.right = m_clipRect.width();
    m_npWindow.clipRect.bottom = m_clipRect.height();

    GtkAllocation allocation = { m_windowRect.x(), m_windowRect.y(), m_windowRect.width(), m_windowRect.height() };
    gtk_widget_size_allocate(platformPluginWidget(), &allocation);
#if PLATFORM(X11)
    if (!m_needsXEmbed) {
        gtk_xtbin_set_position(GTK_XTBIN(platformPluginWidget()), m_windowRect.x(), m_windowRect.y());
        gtk_xtbin_resize(platformPluginWidget(), m_windowRect.width(), m_windowRect.height());
    }
#endif

    PluginView::setCurrentPluginView(this);
    JSC::JSLock::DropAllLocks dropAllLocks(false);
    setCallingPlugin(true);
    m_plugin->pluginFuncs()->setwindow(m_instance, &m_npWindow);
    setCallingPlugin(false);
    PluginView::setCurrentPluginView(0);
}

void PluginView::setParentVisible(bool visible)
{
    if (isParentVisible() == visible)
        return;

    Widget::setParentVisible(visible);

    if (isSelfVisible() && platformPluginWidget()) {
        if (visible)
            gtk_widget_show(platformPluginWidget());
        else
            gtk_widget_hide(platformPluginWidget());
    }
}

void PluginView::stop()
{
    if (!m_isStarted)
        return;

    HashSet<RefPtr<PluginStream> > streams = m_streams;
    HashSet<RefPtr<PluginStream> >::iterator end = streams.end();
    for (HashSet<RefPtr<PluginStream> >::iterator it = streams.begin(); it != end; ++it) {
        (*it)->stop();
        disconnectStream((*it).get());
    }

    ASSERT(m_streams.isEmpty());

    m_isStarted = false;
    JSC::JSLock::DropAllLocks dropAllLocks(false);

    // Clear the window
    m_npWindow.window = 0;
    if (m_plugin->pluginFuncs()->setwindow && !m_plugin->quirks().contains(PluginQuirkDontSetNullWindowHandleOnDestroy)) {
        PluginView::setCurrentPluginView(this);
        setCallingPlugin(true);
        m_plugin->pluginFuncs()->setwindow(m_instance, &m_npWindow);
        setCallingPlugin(false);
        PluginView::setCurrentPluginView(0);
    }

#ifdef XP_UNIX
    if (m_isWindowed && m_npWindow.ws_info)
           delete (NPSetWindowCallbackStruct *)m_npWindow.ws_info;
    m_npWindow.ws_info = 0;
#endif

    // Destroy the plugin
    {
        PluginView::setCurrentPluginView(this);