apps/nsplugins/viewer/pluginhost_xt.cpp

   1 /*
   2
   3   Xt plugin embedding support
   4
   5   Copyright (c) 2000 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
   6                      Stefan Schimanski <1Stein@gmx.de>
   7                 2003-2005 George Staikos <staikos@kde.org>
   8                 2007 Maksim orlovich     <maksim@kde.org>
   9
  10   This program is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU General Public License as published by
  12   the Free Software Foundation; either version 2 of the License, or
  13   (at your option) any later version.
  14
  15   This program is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18   GNU General Public License for more details.
  19
  20   You should have received a copy of the GNU General Public License
  21   along with this program; if not, write to the Free Software
  22   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  23
  24 */
  25
  26 #include "pluginhost_xt.h"
  27 #include <QX11Info>
  28 #include <QVBoxLayout>
  29 #include <QLabel>
  30
  31 // BEGIN Workaround for QX11EmbedWidget silliness --- it maps widgets by default
  32 // Most of the code is from Qt 4.3.3, Copyright (C) 1992-2007 Trolltech ASA
  33 static unsigned int XEMBED_VERSION = 0;
  34 static Atom _XEMBED_INFO = None;
  35 static void initXEmbedAtoms(Display *d)
  36 {
  37     if (_XEMBED_INFO == None)
  38         _XEMBED_INFO = XInternAtom(d, "_XEMBED_INFO", false);
  39 }
  40
  41 static void doNotAskForXEmbedMapping(QX11EmbedWidget* widget)
  42 {
  43     initXEmbedAtoms(widget->x11Info().display());
  44     unsigned int data[] = {XEMBED_VERSION, 0 /* e.g. not XEMBED_MAPPED*/};
  45     XChangeProperty(widget->x11Info().display(), widget->winId(), _XEMBED_INFO,
  46                     _XEMBED_INFO, 32, PropModeReplace,
  47                     (unsigned char*) data, 2);
  48 }
  49
  50 // END  Workaround for QX11EmbedWidget silliness.
  51
  52
  53 PluginHostXt::PluginHostXt(NSPluginInstance* plugin):
  54     _plugin(plugin), _outside(0), _toplevel(0), _form(0)
  55 {
  56 }
  57
  58
  59 void PluginHostXt::setupWindow(int winId, int width, int height)
  60 {
  61     _outside = new QX11EmbedWidget();
  62     doNotAskForXEmbedMapping(_outside);
  63     _outside->embedInto(winId);
  64
  65     Arg args[7];
  66     Cardinal nargs = 0;
  67     XtSetArg(args[nargs], XtNwidth, width); nargs++;
  68     XtSetArg(args[nargs], XtNheight, height); nargs++;
  69     XtSetArg(args[nargs], XtNborderWidth, 0); nargs++;
  70
  71     String n, c;
  72     XtGetApplicationNameAndClass(QX11Info::display(), &n, &c);
  73     _toplevel = XtAppCreateShell("drawingArea", c, applicationShellWidgetClass,
  74                                  QX11Info::display(), args, nargs);
  75
  76     //if (embed)
  77         XtSetMappedWhenManaged(_toplevel, False);
  78     XtRealizeWidget(_toplevel);
  79
  80     // Create form window that is searched for by flash plugin
  81     _form = XtVaCreateWidget("form", compositeWidgetClass, _toplevel, NULL);
  82     XtSetArg(args[nargs], XtNvisual, QX11Info::appVisual()); nargs++;
  83     XtSetArg(args[nargs], XtNdepth, QX11Info::appDepth()); nargs++;
  84     XtSetArg(args[nargs], XtNcolormap, QX11Info::appColormap()); nargs++;
  85     XtSetValues(_form, args, nargs);
  86     XSync(QX11Info::display(), false);
  87
  88     // From mozilla - not sure if it's needed yet, nor what to use for embedder
  89 #if 0
  90     /* this little trick seems to finish initializing the widget */
  91 #if XlibSpecificationRelease >= 6
  92     XtRegisterDrawable(QX11Info::display(), embedderid, _toplevel);
  93 #else
  94     _XtRegisterWindow(embedderid, _toplevel);
  95 #endif
  96 #endif
  97     XtRealizeWidget(_form);
  98     XtManageChild(_form);
  99
 100     // Register forwarder
 101     XtAddEventHandler(_toplevel, (KeyPressMask|KeyReleaseMask),
 102                       False, forwarder, (XtPointer)this );
 103     XtAddEventHandler(_form, (KeyPressMask|KeyReleaseMask),
 104                       False, forwarder, (XtPointer)this );
 105
 106     // Embed the Xt widget into the Qt widget
 107     XReparentWindow(QX11Info::display(), XtWindow(_toplevel), _outside->winId(), 0, 0);
 108     XtMapWidget(_toplevel);
 109     setupPluginWindow(_plugin, (void*) XtWindow(_form), width, height);
 110 }
 111
 112 PluginHostXt::~PluginHostXt()
 113 {
 114     if (_form) {
 115         XtRemoveEventHandler(_form, (KeyPressMask|KeyReleaseMask),
 116                                 False, forwarder, (XtPointer)this);
 117         XtRemoveEventHandler(_toplevel, (KeyPressMask|KeyReleaseMask),
 118                                 False, forwarder, (XtPointer)this);
 119         XtDestroyWidget(_form);
 120         XtDestroyWidget(_toplevel);
 121         _form     = 0;
 122         _toplevel = 0;
 123     }
 124     delete _outside;
 125 }
 126
 127 void PluginHostXt::forwarder(Widget w, XtPointer cl_data, XEvent * event, Boolean * cont)
 128 {
 129     Q_UNUSED(w);
 130     PluginHostXt *inst = (PluginHostXt*)cl_data;
 131     *cont = True;
 132     if (inst->_form == 0 || event->xkey.window == XtWindow(inst->_form))
 133         return;
 134     *cont = False;
 135     event->xkey.window = XtWindow(inst->_form);
 136     event->xkey.subwindow = None;
 137     XtDispatchEvent(event);
 138 }
 139
 140
 141 static void resizeWidgets(Window w, int width, int height) {
 142    Window rroot, parent, *children;
 143    unsigned int nchildren = 0;
 144
 145    if (XQueryTree(QX11Info::display(), w, &rroot, &parent, &children, &nchildren)) {
 146       for (unsigned int i = 0; i < nchildren; i++) {
 147          XResizeWindow(QX11Info::display(), children[i], width, height);
 148       }
 149       XFree(children);
 150    }
 151 }
 152
 153 void PluginHostXt::resizePlugin(int /*pluginWinId*/, int w, int h)
 154 {
 155     kDebug(1431) << w << h;
 156     XResizeWindow(QX11Info::display(), XtWindow(_form), w, h);
 157     XResizeWindow(QX11Info::display(), XtWindow(_toplevel), w, h);
 158
 159     Arg args[7];
 160     Cardinal nargs = 0;
 161     XtSetArg(args[nargs], XtNwidth, w); nargs++;
 162     XtSetArg(args[nargs], XtNheight, h); nargs++;
 163     XtSetArg(args[nargs], XtNvisual, QX11Info::appVisual()); nargs++;
 164     XtSetArg(args[nargs], XtNdepth, QX11Info::appDepth()); nargs++;
 165     XtSetArg(args[nargs], XtNcolormap, QX11Info::appColormap()); nargs++;
 166     XtSetArg(args[nargs], XtNborderWidth, 0); nargs++;
 167
 168     XtSetValues(_form, args, nargs);
 169
 170     resizeWidgets(XtWindow(_form), w, h);
 171 }
 172
 173 // kate: indent-width 4; replace-tabs on; tab-width 4; space-indent on;