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Diffstat (limited to 'nsplugins/viewer/kxt.cpp')
| -rw-r--r-- | nsplugins/viewer/kxt.cpp | 629 |
1 files changed, 629 insertions, 0 deletions
diff --git a/nsplugins/viewer/kxt.cpp b/nsplugins/viewer/kxt.cpp new file mode 100644 index 000000000..7f2e04b54 --- /dev/null +++ b/nsplugins/viewer/kxt.cpp @@ -0,0 +1,629 @@ +/* + + kxt.cpp - Xt enabled Qt classed (derived from Qt Extension QXt) + + Copyright (c) 2000,2001 Stefan Schimanski <[email protected]> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +*/ + +/**************************************************************************** +** +** Implementation of Qt extension classes for Xt/Motif support. +** +** Created : 980107 +** +** Copyright (C) 1992-2000 Troll Tech AS. All rights reserved. +** +** This file is part of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Troll Tech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** Licensees holding valid Qt Professional Edition licenses may use this +** file in accordance with the Qt Professional Edition License Agreement +** provided with the Qt Professional Edition. +** +** See http://www.trolltech.com/pricing.html or email [email protected] for +** information about the Professional Edition licensing, or see +** http://www.trolltech.com/qpl/ for QPL licensing information. +** +*****************************************************************************/ + +#include <qglobal.h> +#if QT_VERSION < 0x030100 + +#include <kapplication.h> +#include <qwidget.h> +#include <qobjectlist.h> +#include <qwidgetlist.h> +#include <kdebug.h> +#include <qtimer.h> + +#include "kxt.h" + +#include <stdio.h> +#include <string.h> +#include <time.h> +#include <limits.h> + +#include <X11/Xlib.h> +#include <X11/Intrinsic.h> +#include <X11/IntrinsicP.h> // for XtCreateWindow +#include <X11/Shell.h> +#include <X11/StringDefs.h> +#include <X11/Xutil.h> +#include <X11/Xos.h> + +const int XKeyPress = KeyPress; +const int XKeyRelease = KeyRelease; +#undef KeyPress +#undef KeyRelease + +extern Atom qt_wm_state; + +//#define HAVE_MOTIF +#ifdef HAVE_MOTIF +#include <Xm/Xm.h> +#endif + +typedef void (*SameAsXtTimerCallbackProc)(void*,void*); +typedef void (*IntervalSetter)(int); +typedef void (*ForeignEventProc)(XEvent*); + +extern XtEventDispatchProc + qt_np_cascade_event_handler[LASTEvent]; // defined in qnpsupport.cpp +void qt_reset_color_avail(); // defined in qcolor_x11.cpp +int qt_activate_timers(); // defined in qapplication_x11.cpp +timeval *qt_wait_timer(); // defined in qapplication_x11.cpp +void qt_x11SendPostedEvents(); // defined in qapplication_x11.cpp +int qt_event_handler( XEvent* event ); // defined in qnpsupport.cpp +extern int qt_np_count; // defined in qnpsupport.cpp +void qt_np_timeout( void* p, void* id ); // defined in qnpsupport.cpp +void qt_np_add_timeoutcb( + SameAsXtTimerCallbackProc cb ); // defined in qnpsupport.cpp +void qt_np_remove_timeoutcb( + SameAsXtTimerCallbackProc cb ); // defined in qnpsupport.cpp +void qt_np_add_timer_setter( + IntervalSetter is ); // defined in qnpsupport.cpp +void qt_np_remove_timer_setter( + IntervalSetter is ); // defined in qnpsupport.cpp +extern XtIntervalId qt_np_timerid; // defined in qnpsupport.cpp +extern void (*qt_np_leave_cb) + (XLeaveWindowEvent*); // defined in qnpsupport.cpp +void qt_np_add_event_proc( + ForeignEventProc fep ); // defined in qnpsupport.cpp +void qt_np_remove_event_proc( + ForeignEventProc fep ); // defined in qnpsupport.cpp + + +typedef struct { + int empty; +} QWidgetClassPart; + +typedef struct _QWidgetClassRec { + CoreClassPart core_class; + QWidgetClassPart qwidget_class; +} QWidgetClassRec; + +//static QWidgetClassRec qwidgetClassRec; + +typedef struct { + /* resources */ + /* (none) */ + /* private state */ + KXtWidget* qxtwidget; +} QWidgetPart; + +typedef struct _QWidgetRec { + CorePart core; + QWidgetPart qwidget; +} QWidgetRec; + + +static +void reparentChildrenOf(QWidget* parent) +{ + + if ( !parent->children() ) + return; // nothing to do + + for ( QObjectListIt it( *parent->children() ); it.current(); ++it ) { + if ( it.current()->isWidgetType() ) { + QWidget* widget = (QWidget*)it.current(); + XReparentWindow( qt_xdisplay(), + widget->winId(), + parent->winId(), + widget->x(), + widget->y() ); + if ( widget->isVisible() ) + XMapWindow( qt_xdisplay(), widget->winId() ); + } + } + +} + +void qwidget_realize( + Widget widget, + XtValueMask* mask, + XSetWindowAttributes* attributes + ) +{ + widgetClassRec.core_class.realize(widget, mask, attributes); + KXtWidget* qxtw = ((QWidgetRec*)widget)->qwidget.qxtwidget; + if (XtWindow(widget) != qxtw->winId()) { + qxtw->create(XtWindow(widget), FALSE, FALSE); + reparentChildrenOf(qxtw); + } + qxtw->show(); + XMapWindow( qt_xdisplay(), qxtw->winId() ); +} + +static +QWidgetClassRec qwidgetClassRec = { + { /* core fields */ + /* superclass */ (WidgetClass) &widgetClassRec, + /* class_name */ (char*)"QWidget", + /* widget_size */ sizeof(QWidgetRec), + /* class_initialize */ 0, + /* class_part_initialize */ 0, + /* class_inited */ FALSE, + /* initialize */ 0, + /* initialize_hook */ 0, + /* realize */ qwidget_realize, + /* actions */ 0, + /* num_actions */ 0, + /* resources */ 0, + /* num_resources */ 0, + /* xrm_class */ NULLQUARK, + /* compress_motion */ TRUE, + /* compress_exposure */ TRUE, + /* compress_enterleave */ TRUE, + /* visible_interest */ FALSE, + /* destroy */ 0, + /* resize */ XtInheritResize, + /* expose */ XtInheritExpose, + /* set_values */ 0, + /* set_values_hook */ 0, + /* set_values_almost */ XtInheritSetValuesAlmost, + /* get_values_hook */ 0, + /* accept_focus */ XtInheritAcceptFocus, + /* version */ XtVersion, + /* callback_private */ 0, + /* tm_table */ XtInheritTranslations, + /* query_geometry */ XtInheritQueryGeometry, + /* display_accelerator */ XtInheritDisplayAccelerator, + /* extension */ 0 + }, + { /* qwidget fields */ + /* empty */ 0 + } +}; +static WidgetClass qWidgetClass = (WidgetClass)&qwidgetClassRec; + +static bool filters_installed = FALSE; +static KXtApplication* qxtapp = 0; +static XtAppContext appcon; + +static +Boolean qt_event_handler_wrapper( XEvent* event ) +{ + return (Boolean)qt_event_handler( event ); +} + +static +void installXtEventFilters() +{ + if (filters_installed) return; + // Get Xt out of our face - install filter on every event type + for (int et=2; et < LASTEvent; et++) { + qt_np_cascade_event_handler[et] = XtSetEventDispatcher( + qt_xdisplay(), et, qt_event_handler_wrapper ); + } + filters_installed = TRUE; +} + +static +void removeXtEventFilters() +{ + if (!filters_installed) return; + // We aren't needed any more... slink back into the shadows. + for (int et=2; et < LASTEvent; et++) { + XtSetEventDispatcher( + qt_xdisplay(), et, qt_np_cascade_event_handler[et] ); + } + filters_installed = FALSE; +} + +// When we are in an event loop of QApplication rather than the browser's +// event loop (eg. for a modal dialog), we still send events to Xt. +static +void np_event_proc( XEvent* e ) +{ + Widget xtw = XtWindowToWidget( e->xany.display, e->xany.window ); + if ( xtw && qApp->loopLevel() > 0 ) { + // Allow Xt to process the event + qt_np_cascade_event_handler[e->type]( e ); + } +} + +static void np_set_timer( int interval ) +{ + // Ensure we only have one timeout in progress - QApplication is + // computing the one amount of time we need to wait. + if ( qt_np_timerid ) { + XtRemoveTimeOut( qt_np_timerid ); + } + qt_np_timerid = XtAppAddTimeOut(appcon, interval, + (XtTimerCallbackProc)qt_np_timeout, 0); +} + +static void np_do_timers( void*, void* ) +{ + qt_np_timerid = 0; // It's us, and we just expired, that's why we are here. + + qt_activate_timers(); + + timeval *tm = qt_wait_timer(); + + if (tm) { + int interval = QMIN(tm->tv_sec,INT_MAX/1000)*1000 + tm->tv_usec/1000; + np_set_timer( interval ); + } + qxtapp->sendPostedEvents(); +} + +/*! + \class KXtApplication qxt.h + \brief Allows mixing of Xt/Motif and Qt widgets. + + \extension Xt/Motif + + The KXtApplication and KXtWidget classes allow old Xt or Motif widgets + to be used in new Qt applications. They also allow Qt widgets to + be used in primarily Xt/Motif applications. The facility is intended + to aid migration from Xt/Motif to the more comfortable Qt system. +*/ + +static bool my_xt; + +/*! + Constructs a QApplication and initializes the Xt toolkit. + The \a appclass, \a options, \a num_options, and \a resources + arguments are passed on to XtAppSetFallbackResources and + XtDisplayInitialize. + + Use this constructor when writing a new Qt application which + needs to use some existing Xt/Motif widgets. +*/ +KXtApplication::KXtApplication(int& argc, char** argv, + const QCString& rAppName, bool allowStyles, bool GUIenabled, + XrmOptionDescRec *options, int num_options, + char** resources) + : KApplication(argc, argv, rAppName, allowStyles, GUIenabled) +{ + my_xt = TRUE; + + XtToolkitInitialize(); + appcon = XtCreateApplicationContext(); + if (resources) XtAppSetFallbackResources(appcon, (char**)resources); + XtDisplayInitialize(appcon, qt_xdisplay(), name(), rAppName, options, + num_options, &argc, argv); + init(); +} + +/*! + Constructs a QApplication from the \a display of an already-initialized + Xt application. + + Use this constructor when introducing Qt widgets into an existing + Xt/Motif application. +*/ +KXtApplication::KXtApplication(Display* dpy, int& argc, char** argv, + const QCString& rAppName, bool allowStyles, bool GUIenabled) + : KApplication(dpy, argc, argv, rAppName, allowStyles, GUIenabled) +{ + my_xt = FALSE; + init(); + appcon = XtDisplayToApplicationContext(dpy); +} + +/*! + Destructs the application. Does not close the Xt toolkit. +*/ +KXtApplication::~KXtApplication() +{ + Q_ASSERT(qxtapp==this); + removeXtEventFilters(); + qxtapp = 0; + + // the manpage says: "or just exit", that's what we do to avoid + // double closing of the display +// if (my_xt) { +// XtDestroyApplicationContext(appcon); +// } +} + +void KXtApplication::init() +{ + Q_ASSERT(qxtapp==0); + qxtapp = this; + installXtEventFilters(); + qt_np_add_timeoutcb(np_do_timers); + qt_np_add_timer_setter(np_set_timer); + qt_np_add_event_proc(np_event_proc); + qt_np_count++; +/* QTimer *timer = new QTimer( this ); + timer->start(500);*/ +} + +/*! + \class KXtWidget qxt.h + \brief Allows mixing of Xt/Motif and Qt widgets. + + \extension Xt/Motif + + KXtWidget acts as a bridge between Xt and Qt. For utilizing old + Xt widgets, it can be a QWidget + based on a Xt widget class. For including Qt widgets in an existing + Xt/Motif application, it can be a special Xt widget class that is + a QWidget. See the constructors for the different behaviors. +*/ + +void KXtWidget::init(const char* name, WidgetClass widget_class, + Widget parent, QWidget* qparent, + ArgList args, Cardinal num_args, + bool managed) +{ + need_reroot=FALSE; + xtparent = 0; + if (parent ) { + Q_ASSERT(!qparent); + xtw = XtCreateWidget(name, widget_class, parent, args, num_args); + if ( widget_class == qWidgetClass ) + ((QWidgetRec*)xtw)->qwidget.qxtwidget = this; + xtparent = parent; + if (managed) + XtManageChild(xtw); + } else { + Q_ASSERT(!managed); + + String n, c; + XtGetApplicationNameAndClass(qt_xdisplay(), &n, &c); + xtw = XtAppCreateShell(n, c, widget_class, qt_xdisplay(), + args, num_args); + if ( widget_class == qWidgetClass ) + ((QWidgetRec*)xtw)->qwidget.qxtwidget = this; + } + + if ( qparent ) { + XtResizeWidget( xtw, 100, 100, 0 ); + XtSetMappedWhenManaged(xtw, False); + XtRealizeWidget(xtw); + XSync(qt_xdisplay(), False); // I want all windows to be created now + XReparentWindow(qt_xdisplay(), XtWindow(xtw), qparent->winId(), x(), y()); + XtSetMappedWhenManaged(xtw, True); + need_reroot=TRUE; + } + + Arg reqargs[20]; + Cardinal nargs=0; + XtSetArg(reqargs[nargs], XtNx, x()); nargs++; + XtSetArg(reqargs[nargs], XtNy, y()); nargs++; + XtSetArg(reqargs[nargs], XtNwidth, width()); nargs++; + XtSetArg(reqargs[nargs], XtNheight, height()); nargs++; + //XtSetArg(reqargs[nargs], "mappedWhenManaged", False); nargs++; + XtSetValues(xtw, reqargs, nargs); + + //#### destroy(); MLK + + if (!parent || XtIsRealized(parent)) + XtRealizeWidget(xtw); +} + + +/*! + Constructs a KXtWidget of the special Xt widget class known as + "QWidget" to the resource manager. + + Use this constructor to utilize Qt widgets in an Xt/Motif + application. The KXtWidget is a QWidget, so you can create + subwidgets, layouts, etc. using Qt functionality. +*/ +KXtWidget::KXtWidget(const char* name, Widget parent, bool managed) : + QWidget( 0, name, WResizeNoErase ) +{ + init(name, qWidgetClass, parent, 0, 0, 0, managed); + Arg reqargs[20]; + Cardinal nargs=0; + XtSetArg(reqargs[nargs], XtNborderWidth, 0); + nargs++; + XtSetValues(xtw, reqargs, nargs); +} + +/*! + Constructs a KXtWidget of the given \a widget_class. + + Use this constructor to utilize Xt or Motif widgets in a Qt + application. The KXtWidget looks and behaves + like the Xt class, but can be used like any QWidget. + + Note that Xt requires that the most toplevel Xt widget is a shell. + That means, if \a parent is a KXtWidget, the \a widget_class can be + of any kind. If there isn't a parent or the parent is just a normal + QWidget, \a widget_class should be something like \c + topLevelShellWidgetClass. + + If the \a managed parameter is TRUE and \a parent in not NULL, + XtManageChild it used to manage the child. +*/ +KXtWidget::KXtWidget(const char* name, WidgetClass widget_class, + QWidget *parent, ArgList args, Cardinal num_args, + bool managed) : + QWidget( parent, name, WResizeNoErase ) +{ + if ( !parent ) + init(name, widget_class, 0, 0, args, num_args, managed); + else if ( parent->inherits("KXtWidget") ) + init(name, widget_class, ( (KXtWidget*)parent)->xtw , 0, args, num_args, managed); + else + init(name, widget_class, 0, parent, args, num_args, managed); + create(XtWindow(xtw), FALSE, FALSE); +} + +/*! + Destructs the KXtWidget. +*/ +KXtWidget::~KXtWidget() +{ + // Delete children first, as Xt will destroy their windows + // + QObjectList* list = queryList("QWidget", 0, FALSE, FALSE); + if ( list ) { + QWidget* c; + QObjectListIt it( *list ); + while ( (c = (QWidget*)it.current()) ) { + delete c; + ++it; + } + delete list; + } + + if ( need_reroot ) { + hide(); + XReparentWindow(qt_xdisplay(), winId(), qApp->desktop()->winId(), + x(), y()); + } + + XtDestroyWidget(xtw); + destroy( FALSE, FALSE ); +} + +/*! + \fn Widget KXtWidget::xtWidget() const + Returns the Xt widget equivalent for the Qt widget. +*/ + + + +/*! + Reimplemented to produce the Xt effect of getting focus when the + mouse enters the widget. <em>This may be changed.</em> +*/ +bool KXtWidget::x11Event( XEvent * e ) +{ + if ( e->type == EnterNotify ) { + if ( xtparent ) + setActiveWindow(); + } + return QWidget::x11Event( e ); +} + + +/*! + Implement a degree of focus handling for Xt widgets. +*/ +void KXtWidget::setActiveWindow() +{ + if ( xtparent ) { + if ( !QWidget::isActiveWindow() && isActiveWindow() ) { + XFocusChangeEvent e; + e.type = FocusIn; + e.window = winId(); + e.mode = NotifyNormal; + e.detail = NotifyInferior; + XSendEvent( qt_xdisplay(), e.window, TRUE, NoEventMask, (XEvent*)&e ); + } + } else { + QWidget::setActiveWindow(); + } +} + +/*! + Different from QWidget::isActiveWindow() + */ +bool KXtWidget::isActiveWindow() const +{ + Window win; + int revert; + XGetInputFocus( qt_xdisplay(), &win, &revert ); + + if ( win == None) return FALSE; + + QWidget *w = find( (WId)win ); + if ( w ) { + // We know that window + return w->topLevelWidget() == topLevelWidget(); + } else { + // Window still may be a parent (if top-level is foreign window) + Window root, parent; + Window cursor = winId(); + Window *ch; + unsigned int nch; + while ( XQueryTree(qt_xdisplay(), cursor, &root, &parent, &ch, &nch) ) { + if (ch) XFree( (char*)ch); + if ( parent == win ) return TRUE; + if ( parent == root ) return FALSE; + cursor = parent; + } + return FALSE; + } +} + +/*!\reimp + */ +void KXtWidget::moveEvent( QMoveEvent* ) +{ + if ( xtparent ) + return; + XConfigureEvent c; + c.type = ConfigureNotify; + c.event = winId(); + c.window = winId(); + c.x = x(); + c.y = y(); + c.width = width(); + c.height = height(); + c.border_width = 0; + XSendEvent( qt_xdisplay(), c.event, TRUE, NoEventMask, (XEvent*)&c ); + XtMoveWidget( xtw, x(), y() ); +} + +/*!\reimp + */ +void KXtWidget::resizeEvent( QResizeEvent* ) +{ + if ( xtparent ) + return; + XtWidgetGeometry preferred; + (void ) XtQueryGeometry( xtw, 0, &preferred ); + XConfigureEvent c; + c.type = ConfigureNotify; + c.event = winId(); + c.window = winId(); + c.x = x(); + c.y = y(); + c.width = width(); + c.height = height(); + c.border_width = 0; + XSendEvent( qt_xdisplay(), c.event, TRUE, NoEventMask, (XEvent*)&c ); + XtResizeWidget( xtw, width(), height(), preferred.border_width ); +} + +#include "kxt.moc" + +#endif |