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Mozilla/mozilla/widget/src/gtk/nsGtkEventHandler.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsWidget.h"
#include "keysym2ucs.h"
#include "nsWindow.h"
#include "nsScrollbar.h"
#include "nsIFileWidget.h"
#include "nsGUIEvent.h"
#include "nsTextWidget.h"
#include "nsGtkIMEHelper.h"
#include "stdio.h"
#include "ctype.h"
#include "gtk/gtk.h"
#include "nsGtkEventHandler.h"
#include <gdk/gdkkeysyms.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef DEBUG_pavlov
//#define DEBUG_EVENTS 1
#endif
static void
dispatch_superwin_event(GdkEvent *event, nsWindow *window);
static PRBool
superwin_child_of_gtk_widget(nsWindow *window, GtkWidget *widget);
static PRBool
gtk_widget_child_of_gdk_window(GtkWidget *widget, GdkWindow *window);
struct EventInfo {
nsWidget *widget; // the widget
nsRect *rect; // the rect
};
// This is a flag that says if we should suppress the next key down
// event. This is used when that last key release event was
// suppressed and we want the next key press event to not generate the
// key down event since it is part of a key repeat sequence.
static PRBool suppressNextKeyDown = PR_FALSE;
//==============================================================
void InitAllocationEvent(GtkAllocation *aAlloc,
gpointer p,
nsSizeEvent &anEvent,
PRUint32 aEventType)
{
anEvent.message = aEventType;
anEvent.widget = (nsWidget *) p;
anEvent.eventStructType = NS_SIZE_EVENT;
if (aAlloc != nsnull) {
// HACK
// nsRect *foo = new nsRect(aAlloc->x, aAlloc->y, aAlloc->width, aAlloc->height);
nsRect *foo = new nsRect(0, 0, aAlloc->width, aAlloc->height);
anEvent.windowSize = foo;
// anEvent.point.x = aAlloc->x;
// anEvent.point.y = aAlloc->y;
// HACK
anEvent.point.x = 0;
anEvent.point.y = 0;
anEvent.mWinWidth = aAlloc->width;
anEvent.mWinHeight = aAlloc->height;
}
anEvent.time = PR_IntervalNow();
}
//==============================================================
void InitConfigureEvent(GdkEventConfigure *aConf,
gpointer p,
nsSizeEvent &anEvent,
PRUint32 aEventType)
{
anEvent.message = aEventType;
anEvent.widget = (nsWidget *) p;
anEvent.eventStructType = NS_SIZE_EVENT;
if (aConf != nsnull) {
/* do we accually need to alloc a new rect, or can we just set the
current one */
nsRect *foo = new nsRect(aConf->x, aConf->y, aConf->width, aConf->height);
anEvent.windowSize = foo;
anEvent.point.x = aConf->x;
anEvent.point.y = aConf->y;
anEvent.mWinWidth = aConf->width;
anEvent.mWinHeight = aConf->height;
}
// this usually returns 0
anEvent.time = 0;
}
//==============================================================
void InitExposeEvent(GdkEventExpose *aGEE,
gpointer p,
nsPaintEvent &anEvent,
PRUint32 aEventType)
{
anEvent.message = aEventType;
anEvent.widget = (nsWidget *) p;
anEvent.eventStructType = NS_PAINT_EVENT;
if (aGEE != nsnull)
{
#ifdef DEBUG_EVENTS
g_print("expose event: x = %i , y = %i , w = %i , h = %i\n",
aGEE->area.x, aGEE->area.y,
aGEE->area.width, aGEE->area.height);
#endif
anEvent.point.x = aGEE->area.x;
anEvent.point.y = aGEE->area.y;
nsRect *rect = new nsRect(aGEE->area.x, aGEE->area.y,
aGEE->area.width, aGEE->area.height);
anEvent.rect = rect;
anEvent.time = gdk_event_get_time((GdkEvent*)aGEE);
}
}
//=============================================================
void UninitExposeEvent(GdkEventExpose *aGEE,
gpointer p,
nsPaintEvent &anEvent,
PRUint32 aEventType)
{
if (aGEE != nsnull) {
delete anEvent.rect;
}
}
struct nsKeyConverter {
int vkCode; // Platform independent key code
int keysym; // GDK keysym key code
};
//
// Netscape keycodes are defined in widget/public/nsGUIEvent.h
// GTK keycodes are defined in <gdk/gdkkeysyms.h>
//
struct nsKeyConverter nsKeycodes[] = {
{ NS_VK_CANCEL, GDK_Cancel },
{ NS_VK_BACK, GDK_BackSpace },
{ NS_VK_TAB, GDK_Tab },
{ NS_VK_TAB, GDK_ISO_Left_Tab },
{ NS_VK_CLEAR, GDK_Clear },
{ NS_VK_RETURN, GDK_Return },
{ NS_VK_SHIFT, GDK_Shift_L },
{ NS_VK_SHIFT, GDK_Shift_R },
{ NS_VK_CONTROL, GDK_Control_L },
{ NS_VK_CONTROL, GDK_Control_R },
{ NS_VK_ALT, GDK_Alt_L },
{ NS_VK_ALT, GDK_Alt_R },
{ NS_VK_PAUSE, GDK_Pause },
{ NS_VK_CAPS_LOCK, GDK_Caps_Lock },
{ NS_VK_ESCAPE, GDK_Escape },
{ NS_VK_SPACE, GDK_space },
{ NS_VK_PAGE_UP, GDK_Page_Up },
{ NS_VK_PAGE_DOWN, GDK_Page_Down },
{ NS_VK_END, GDK_End },
{ NS_VK_HOME, GDK_Home },
{ NS_VK_LEFT, GDK_Left },
{ NS_VK_UP, GDK_Up },
{ NS_VK_RIGHT, GDK_Right },
{ NS_VK_DOWN, GDK_Down },
{ NS_VK_PRINTSCREEN, GDK_Print },
{ NS_VK_INSERT, GDK_Insert },
{ NS_VK_DELETE, GDK_Delete },
{ NS_VK_MULTIPLY, GDK_KP_Multiply },
{ NS_VK_ADD, GDK_KP_Add },
{ NS_VK_SEPARATOR, GDK_KP_Separator },
{ NS_VK_SUBTRACT, GDK_KP_Subtract },
{ NS_VK_DECIMAL, GDK_KP_Decimal },
{ NS_VK_DIVIDE, GDK_KP_Divide },
{ NS_VK_RETURN, GDK_KP_Enter },
{ NS_VK_COMMA, GDK_comma },
{ NS_VK_PERIOD, GDK_period },
{ NS_VK_SLASH, GDK_slash },
{ NS_VK_BACK_SLASH, GDK_backslash },
{ NS_VK_BACK_QUOTE, GDK_grave },
{ NS_VK_OPEN_BRACKET, GDK_bracketleft },
{ NS_VK_CLOSE_BRACKET, GDK_bracketright },
{ NS_VK_SEMICOLON, GDK_colon },
{ NS_VK_QUOTE, GDK_apostrophe },
// NS doesn't have dash or equals distinct from the numeric keypad ones,
// so we'll use those for now. See bug 17008:
{ NS_VK_SUBTRACT, GDK_minus },
{ NS_VK_EQUALS, GDK_equal },
// Some shifted keys, see bug 15463 as well as 17008.
// These should be subject to different keyboard mappings.
{ NS_VK_QUOTE, GDK_quotedbl },
{ NS_VK_OPEN_BRACKET, GDK_braceleft },
{ NS_VK_CLOSE_BRACKET, GDK_braceright },
{ NS_VK_BACK_SLASH, GDK_bar },
{ NS_VK_SEMICOLON, GDK_semicolon },
{ NS_VK_BACK_QUOTE, GDK_asciitilde },
{ NS_VK_COMMA, GDK_less },
{ NS_VK_PERIOD, GDK_greater },
{ NS_VK_SLASH, GDK_question },
{ NS_VK_1, GDK_exclam },
{ NS_VK_2, GDK_at },
{ NS_VK_3, GDK_numbersign },
{ NS_VK_4, GDK_dollar },
{ NS_VK_5, GDK_percent },
{ NS_VK_6, GDK_asciicircum },
{ NS_VK_7, GDK_ampersand },
{ NS_VK_8, GDK_asterisk },
{ NS_VK_9, GDK_parenleft },
{ NS_VK_0, GDK_parenright },
{ NS_VK_SUBTRACT, GDK_underscore },
{ NS_VK_EQUALS, GDK_plus }
};
void nsGtkWidget_InitNSKeyEvent(int aEventType, nsKeyEvent& aKeyEvent,
GtkWidget *w, gpointer p, GdkEventKey * event);
//==============================================================
// Input keysym is in gtk format; output is in NS_VK format
int nsPlatformToDOMKeyCode(GdkEventKey *aGEK)
{
int i;
int length = sizeof(nsKeycodes) / sizeof(struct nsKeyConverter);
int keysym = aGEK->keyval;
// First, try to handle alphanumeric input, not listed in nsKeycodes:
// most likely, more letters will be getting typed in than things in
// the key list, so we will look through these first.
// since X has different key symbols for upper and lowercase letters and
// mozilla does not, convert gdk's to mozilla's
if (keysym >= GDK_a && keysym <= GDK_z)
return keysym - GDK_a + NS_VK_A;
if (keysym >= GDK_A && keysym <= GDK_Z)
return keysym - GDK_A + NS_VK_A;
// numbers
if (keysym >= GDK_0 && keysym <= GDK_9)
return keysym - GDK_0 + NS_VK_0;
// keypad numbers
if (keysym >= GDK_KP_0 && keysym <= GDK_KP_9)
return keysym - GDK_KP_0 + NS_VK_NUMPAD0;
// misc other things
for (i = 0; i < length; i++) {
if (nsKeycodes[i].keysym == keysym)
return(nsKeycodes[i].vkCode);
}
// function keys
if (keysym >= GDK_F1 && keysym <= GDK_F24)
return keysym - GDK_F1 + NS_VK_F1;
#if defined(DEBUG_akkana) || defined(DEBUG_ftang)
printf("No match in nsPlatformToDOMKeyCode: keysym is 0x%x, string is %s\n", keysym, aGEK->string);
#endif
return((int)0);
}
//==============================================================
PRUint32 nsConvertCharCodeToUnicode(GdkEventKey* aGEK)
{
// For control chars, GDK sets string to be the actual ascii value.
// Map that to what nsKeyEvent wants, which currently --
// TEMPORARILY (the spec has changed and will be switched over
// when the tree opens for M11) --
// is the ascii for the actual event (e.g. 1 for control-a).
// This is only true for control chars; for alt chars, send the
// ascii for the key, i.e. a for alt-a.
if (aGEK->state & GDK_CONTROL_MASK)
{
if (aGEK->state & GDK_SHIFT_MASK)
return aGEK->string[0] + 'A' - 1;
else
return aGEK->string[0] + 'a' - 1;
}
// For now (obviously this will need to change for IME),
// only set a char code if the result is printable:
if (!isprint(aGEK->string[0]))
return 0;
// ALT keys in gdk give the upper case character in string,
// but we want the lower case char in char code
// unless shift was also pressed.
if (((aGEK->state & GDK_MOD1_MASK))
&& !(aGEK->state & GDK_SHIFT_MASK)
&& isupper(aGEK->string[0]))
return tolower(aGEK->string[0]);
//
// placeholder for something a little more interesting and correct
//
return aGEK->string[0];
}
//==============================================================
void InitKeyEvent(GdkEventKey *aGEK,
gpointer p,
nsKeyEvent &anEvent,
PRUint32 aEventType)
{
anEvent.message = aEventType;
anEvent.widget = (nsWidget *) p;
anEvent.eventStructType = NS_KEY_EVENT;
if (aGEK != nsnull) {
anEvent.keyCode = nsPlatformToDOMKeyCode(aGEK);
anEvent.charCode = 0;
anEvent.time = aGEK->time;
anEvent.isShift = (aGEK->state & GDK_SHIFT_MASK) ? PR_TRUE : PR_FALSE;
anEvent.isControl = (aGEK->state & GDK_CONTROL_MASK) ? PR_TRUE : PR_FALSE;
anEvent.isAlt = (aGEK->state & GDK_MOD1_MASK) ? PR_TRUE : PR_FALSE;
// XXX
anEvent.isMeta = PR_FALSE; //(aGEK->state & GDK_MOD2_MASK) ? PR_TRUE : PR_FALSE;
anEvent.point.x = 0;
anEvent.point.y = 0;
}
}
void InitKeyPressEvent(GdkEventKey *aGEK,
gpointer p,
nsKeyEvent &anEvent)
{
//
// init the basic event fields
//
anEvent.eventStructType = NS_KEY_EVENT;
anEvent.message = NS_KEY_PRESS;
anEvent.widget = (nsWidget*)p;
if (aGEK!=nsnull)
{
anEvent.isShift = (aGEK->state & GDK_SHIFT_MASK) ? PR_TRUE : PR_FALSE;
anEvent.isControl = (aGEK->state & GDK_CONTROL_MASK) ? PR_TRUE : PR_FALSE;
anEvent.isAlt = (aGEK->state & GDK_MOD1_MASK) ? PR_TRUE : PR_FALSE;
// XXX
anEvent.isMeta = PR_FALSE; //(aGEK->state & GDK_MOD2_MASK) ? PR_TRUE : PR_FALSE;
if(aGEK->length) {
anEvent.charCode = nsConvertCharCodeToUnicode(aGEK);
} else {
anEvent.charCode = 0;
// now, let's handle some keysym which XmbLookupString didn't handle
// because they are not part of the locale encoding
if( (aGEK->keyval >= 0xa0 && (aGEK->keyval <= 0xf000) ||
(aGEK->keyval & 0xff000000U) == 0x01000000))
{
long ucs = keysym2ucs(aGEK->keyval);
if( (-1 != ucs ) && ( ucs < 0x10000))
anEvent.charCode = ucs;
}
}
if (anEvent.charCode) {
anEvent.keyCode = 0;
anEvent.isShift = PR_FALSE;
} else
anEvent.keyCode = nsPlatformToDOMKeyCode(aGEK);
#if defined(DEBUG_akkana_not) || defined (DEBUG_ftang)
printf("Key Press event: keyCode = 0x%x, char code = '%c'",
anEvent.keyCode, anEvent.charCode);
if (anEvent.isShift)
printf(" [shift]");
if (anEvent.isControl)
printf(" [ctrl]");
if (anEvent.isAlt)
printf(" [alt]");
if (anEvent.isMeta)
printf(" [meta]");
printf("\n");
#endif
anEvent.time = aGEK->time;
anEvent.point.x = 0;
anEvent.point.y = 0;
}
}
//=============================================================
void UninitKeyEvent(GdkEventKey *aGEK,
gpointer p,
nsKeyEvent &anEvent,
PRUint32 aEventType)
{
}
/*==============================================================
==============================================================
=============================================================
==============================================================*/
void handle_size_allocate(GtkWidget *w, GtkAllocation *alloc, gpointer p)
{
nsWindow *widget = (nsWindow *)p;
nsSizeEvent event;
InitAllocationEvent(alloc, p, event, NS_SIZE);
NS_ADDREF(widget);
widget->OnResize(event);
NS_RELEASE(widget);
delete event.windowSize;
}
gint handle_expose_event(GtkWidget *w, GdkEventExpose *event, gpointer p)
{
if (event->type == GDK_NO_EXPOSE)
return PR_FALSE;
nsPaintEvent pevent;
InitExposeEvent(event, p, pevent, NS_PAINT);
nsWindow *win = (nsWindow *)p;
NS_ADDREF(win);
win->OnExpose(pevent);
NS_RELEASE(win);
UninitExposeEvent(event, p, pevent, NS_PAINT);
return PR_TRUE;
}
//==============================================================
void handle_scrollbar_value_changed(GtkAdjustment *adj, gpointer p)
{
nsScrollbar *widget = (nsScrollbar*) p;
nsScrollbarEvent sevent;
sevent.message = NS_SCROLLBAR_POS;
sevent.widget = (nsWidget *) p;
sevent.eventStructType = NS_SCROLLBAR_EVENT;
GdkWindow *win = (GdkWindow *)widget->GetNativeData(NS_NATIVE_WINDOW);
gdk_window_get_pointer(win, &sevent.point.x, &sevent.point.y, nsnull);
NS_ADDREF(widget);
widget->OnScroll(sevent, adj->value);
NS_RELEASE(widget);
/* FIXME we need to set point.* from the event stuff. */
#if 0
nsWindow * widgetWindow = (nsWindow *) p ;
XmScrollBarCallbackStruct * cbs = (XmScrollBarCallbackStruct*) call_data;
sevent.widget = (nsWindow *) p;
if (cbs->event != nsnull) {
sevent.point.x = cbs->event->xbutton.x;
sevent.point.y = cbs->event->xbutton.y;
} else {
sevent.point.x = 0;
sevent.point.y = 0;
}
sevent.time = 0; //XXX Implement this
switch (cbs->reason) {
case XmCR_INCREMENT:
sevent.message = NS_SCROLLBAR_LINE_NEXT;
break;
case XmCR_DECREMENT:
sevent.message = NS_SCROLLBAR_LINE_PREV;
break;
case XmCR_PAGE_INCREMENT:
sevent.message = NS_SCROLLBAR_PAGE_NEXT;
break;
case XmCR_PAGE_DECREMENT:
sevent.message = NS_SCROLLBAR_PAGE_PREV;
break;
case XmCR_DRAG:
sevent.message = NS_SCROLLBAR_POS;
break;
case XmCR_VALUE_CHANGED:
sevent.message = NS_SCROLLBAR_POS;
break;
default:
break;
}
#endif
}
// GTK's text widget already does XIM, so we don't want to do this again
gint handle_key_press_event_for_text(GtkObject *w, GdkEventKey* event,
gpointer p)
{
nsKeyEvent kevent;
nsTextWidget* win = (nsTextWidget*)p;
// work around for annoying things.
if (event->keyval == GDK_Tab)
if (event->state & GDK_CONTROL_MASK)
if (event->state & GDK_MOD1_MASK)
return PR_FALSE;
// Don't pass shift, control and alt as key press events
if (event->keyval == GDK_Shift_L
|| event->keyval == GDK_Shift_R
|| event->keyval == GDK_Control_L
|| event->keyval == GDK_Control_R)
return PR_TRUE;
NS_ADDREF(win);
InitKeyEvent(event, p, kevent, NS_KEY_DOWN);
win->OnKey(kevent);
//
// Second, dispatch the Key event as a key press event w/ a Unicode
// character code. Note we have to check for modifier keys, since
// gtk returns a character value for them
//
InitKeyPressEvent(event,p, kevent);
win->OnKey(kevent);
NS_RELEASE(win);
if (w)
{
gtk_signal_emit_stop_by_name (GTK_OBJECT(w), "key_press_event");
}
return PR_TRUE;
}
// GTK's text widget already does XIM, so we don't want to do this again
gint handle_key_release_event_for_text(GtkObject *w, GdkEventKey* event,
gpointer p)
{
nsKeyEvent kevent;
nsTextWidget* win = (nsTextWidget*)p;
// Don't pass shift, control and alt as key release events
if (event->keyval == GDK_Shift_L
|| event->keyval == GDK_Shift_R
|| event->keyval == GDK_Control_L
|| event->keyval == GDK_Control_R)
return PR_TRUE;
InitKeyEvent(event, p, kevent, NS_KEY_UP);
NS_ADDREF(win);
win->OnKey(kevent);
NS_RELEASE(win);
if (w)
{
gtk_signal_emit_stop_by_name (GTK_OBJECT(w), "key_release_event");
}
return PR_TRUE;
}
//==============================================================
gint handle_key_press_event(GtkObject *w, GdkEventKey* event, gpointer p)
{
nsKeyEvent kevent;
nsWidget *win = (nsWidget*)p;
if (win->sFocusWindow)
win = win->sFocusWindow;
// work around for annoying things.
if (event->keyval == GDK_Tab)
if (event->state & GDK_CONTROL_MASK)
if (event->state & GDK_MOD1_MASK)
return PR_FALSE;
// Don't pass shift, control and alt as key press events
if (event->keyval == GDK_Shift_L
|| event->keyval == GDK_Shift_R
|| event->keyval == GDK_Control_L
|| event->keyval == GDK_Control_R)
return PR_TRUE;
NS_ADDREF(win);
//
// First, dispatch the Key event as a virtual key down event
// but lie about where it came from and say it is from the
// window that currently has focus inside our app...
//
InitKeyEvent(event, win, kevent, NS_KEY_DOWN);
// if we need to suppress this NS_KEY_DOWN event, reset the flag
if (suppressNextKeyDown == PR_TRUE)
suppressNextKeyDown = PR_FALSE;
else
win->OnKey(kevent);
//
// Second, dispatch the Key event as a key press event w/ a Unicode
// character code. Note we have to check for modifier keys, since
// gtk returns a character value for them
//
if (event->length) {
if (nsGtkIMEHelper::GetSingleton() && (!kevent.keyCode)) {
win->IMECommitEvent(event);
} else {
InitKeyPressEvent(event, win, kevent);
win->OnKey(kevent);
}
} else { // for Home/End/Up/Down/Left/Right/PageUp/PageDown key
InitKeyPressEvent(event, win, kevent);
win->OnKey(kevent);
}
NS_RELEASE(win);
if (w)
{
gtk_signal_emit_stop_by_name (GTK_OBJECT(w), "key_press_event");
}
return PR_TRUE;
}
//==============================================================
gint handle_key_release_event(GtkObject *w, GdkEventKey* event, gpointer p)
{
GdkEvent *nextEvent;
PRBool shouldDrop = PR_FALSE;
// According to the DOM spec if this is the result of a key repeat
// event we don't let it through since the DOM wants the event
// stream to look like this: press press press press release. The
// way that X does things is to do press release press release, etc.
// We check to see if this is a key release by checking to see if
// the next event in the queue is a key press event and it has the
// exact same timestamp as the current event.
// get the next event
nextEvent = gdk_event_get();
// see if it's a key press event and if the time matches.
if (nextEvent && (nextEvent->type == GDK_KEY_PRESS) && (nextEvent->key.time == event->time))
{
shouldDrop = PR_TRUE;
// the next key press event shouldn't generate a key down event.
// this is a global variable
suppressNextKeyDown = PR_TRUE;
}
if (nextEvent) {
// put makes a copy so we're safe doing this.
gdk_event_put(nextEvent);
// free the event since we just got a copy.
gdk_event_free(nextEvent);
}
// should we drop this event?
if (shouldDrop)
return PR_TRUE;
// Don't pass shift, control and alt as key release events
if (event->keyval == GDK_Shift_L
|| event->keyval == GDK_Shift_R
|| event->keyval == GDK_Control_L
|| event->keyval == GDK_Control_R)
return PR_TRUE;
nsWidget *win = (nsWidget *)p;
if (win->sFocusWindow)
win = win->sFocusWindow;
nsKeyEvent kevent;
InitKeyEvent(event, win, kevent, NS_KEY_UP);
NS_ADDREF(win);
win->OnKey(kevent);
NS_RELEASE(win);
if (w)
{
gtk_signal_emit_stop_by_name (GTK_OBJECT(w), "key_release_event");
}
return PR_TRUE;
}
//==============================================================
void
handle_gdk_event (GdkEvent *event, gpointer data)
{
GtkObject *object = nsnull;
// set the last time that we got an event. we need this for drag
// and drop if you can believe that.
guint32 event_time = gdk_event_get_time(event);
if (event_time)
nsWidget::SetLastEventTime(event_time);
// try to get the user data for the event window.
if (event->any.window)
gdk_window_get_user_data (event->any.window, (void **)&object);
// check to see if this is an event on a superwin window. if it is,
// we have to handle it because if it gets down to the standard gtk
// event handler it will cause all sorts of mischief.
if (object != nsnull && GDK_IS_SUPERWIN (object))
{
// try to find the nsWindow object associated with this superwin
nsWindow *window = (nsWindow *)gtk_object_get_data (object, "nsWindow");
// if we don't have a window here anymore, we are probably in
// the process of being or have been destroyed. give up now.
if (!window)
return;
// there are three possibilities here.
// o there's a gtk grab in effect but no superwin grab
//
// if this is the case then we need to see if the superwin is a
// child of the grabbed widget. if it is, then let the event
// pass to the nsWindow associated with the superwin, as normal.
//
// if not, then rewrite the event widget window to the nearest
// MozArea widget and let it pass to the default gtk event
// handler.
//
// o there's a superwin grab in effect but no gtk grab
//
// easy. let the nsWindow associated with the superwin handle
// the event.
//
// o there's both a gtk and superwin grab in effect
//
// this is where things get messy. we need to see if the
// superwin is a child of the grabbing gtk widget. if it is,
// pass it to the nsWindow to be handled
//
// if it in't then rewrite the event to the nearest MozArea
// widget since it will get rewritten again in gtk.
// find out what grabs are in effect
GtkWidget *current_grab = gtk_grab_get_current();
PRBool superwin_grab = window->GrabInProgress();
// check to see if there are no grabs in effect
if (!current_grab && !superwin_grab)
{
dispatch_superwin_event(event, window);
return;
}
// o there's a gtk grab in effect but no superwin grab
else if (current_grab && !superwin_grab)
{
//
// if this is the case then we need to see if the superwin is a
// child of the grabbed widget. if it is, then let the event
// pass to the nsWindow associated with the superwin, as normal.
if (superwin_child_of_gtk_widget(window, current_grab))
{
dispatch_superwin_event(event, window);
return;
}
//
// if not, then rewrite the event widget window to the nearest
// MozArea widget and let it pass to the default gtk event
// handler.
gdk_window_unref (event->any.window);
event->any.window = GTK_WIDGET (window->GetMozArea())->window;
gdk_window_ref (event->any.window);
// dispatch it.
gtk_main_do_event(event);
return;
}
// o there's a superwin grab in effect but no gtk grab
else if (!current_grab && superwin_grab)
{
// easy. let the nsWindow associated with the superwin handle
// the event.
dispatch_superwin_event(event, window);
return;
}
// o there's both a gtk and superwin grab in effect
else if (current_grab && superwin_grab)
{
// this is where things get messy. we need to see if the
// superwin is a child of the grabbing gtk widget. if it is,
// pass it to the nsWindow to be handled
//
nsWindow *grabbingWindow = nsWindow::GetGrabWindow();
GdkWindow *grabbingGdkWindow = (GdkWindow *)grabbingWindow->GetNativeData(NS_NATIVE_WINDOW);
GtkWidget *grabbingMozArea = grabbingWindow->GetMozArea();
NS_RELEASE(grabbingWindow);
if (gtk_widget_child_of_gdk_window(current_grab, grabbingGdkWindow))
{
gdk_window_unref (event->any.window);
event->any.window = grabbingMozArea->window;
gdk_window_ref (event->any.window);
// dispatch it.
gtk_main_do_event(event);
return;
}
// if it in't then rewrite the event to the nearest MozArea
// widget since it will get rewritten again in gtk.
else
{
dispatch_superwin_event(event, window);
return;
}
}
}
else
{
// we need to make sure that if we're doing a gdk_pointer_grab on
// a superwin that we check to make sure that we account for a
// real GtkWidget being inside of it. the grab code in gtk that
// checks to see if a window is contained within a grabbed window
// only knows how to walk up a heirarchy of GtkWidget objects, not
// GdkWindow objects. so, we have to fake it out.
// the most obvious example of this is a popup scrolling window
// with a gtk scrollbar in it.
nsWindow *grabbingWindow = nsWindow::GetGrabWindow();
GtkWidget *tempWidget = NULL;
if (grabbingWindow)
{
// get the GdkWindow that we are grabbing on
GdkWindow *grabbingGdkWindow = (GdkWindow *)grabbingWindow->GetNativeData(NS_NATIVE_WINDOW);
// release our nsIWidget
NS_RELEASE(grabbingWindow);
// only if this is a GtkWidget object
if (GTK_IS_WIDGET(object))
{
tempWidget = (GtkWidget *)object;
// check to see if this widget is the child of the GdkWindow
// that we are grabbing on.
if (gtk_widget_child_of_gdk_window(tempWidget, grabbingGdkWindow))
{
// this is so awesome. gtk_grab_add/gtk_grab_remove don't
// have exact push and pop semantics. if we call grab_add
// on the object and as part of the dispatching of this
// event another grab_add is called on it, we can end up
// releasing the grab early because we always call
// grab_remove on the object after dispatching the event.
// we can end up with a widget that doesn't have a grab on
// it, even though it should. the scrollbar does this.
//
// so, what we do here is to check and see if the widget in
// question has a parent. if it does and it's a mozbox
// object we slam a grab on that instead of the widget
// itself. we know that no one is doing grabs on those.
if (tempWidget->parent)
{
if (GTK_IS_MOZBOX(tempWidget->parent))
{
tempWidget = tempWidget->parent;
}
}
gtk_grab_add(tempWidget);
}
}
}
gtk_main_do_event (event);
if (tempWidget)
gtk_grab_remove(tempWidget);
}
}
void
dispatch_superwin_event(GdkEvent *event, nsWindow *window)
{
if (event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE)
{
// Check to see whether or not we need to send this to the
// toplevel window to get passed to the GtkWidget with focus.
// This happens in the embedding case.
if (!window->sFocusWindow)
{
GtkWidget *mozArea = window->GetMozArea();
NS_ASSERTION(mozArea, "Failed to get GtkMozArea for superwin event!\n");
// pass it off to gtk's event system and return
gtk_propagate_event(mozArea, event);
return;
}
}
switch (event->type)
{
case GDK_KEY_PRESS:
handle_key_press_event (NULL, &event->key, window);
break;
case GDK_KEY_RELEASE:
handle_key_release_event (NULL, &event->key, window);
break;
default:
window->HandleGDKEvent (event);
break;
}
}
PRBool
superwin_child_of_gtk_widget(nsWindow *window, GtkWidget *widget)
{
GtkWidget *this_widget = GTK_WIDGET(window->GetMozArea());
while (this_widget)
{
if (this_widget == widget)
{
return PR_TRUE;
}
this_widget = this_widget->parent;
}
return PR_FALSE;
}
PRBool
gtk_widget_child_of_gdk_window(GtkWidget *widget, GdkWindow *window)
{
GdkWindow *gdk_window = widget->window;
GdkWindow *this_window = gdk_window;
while (this_window)
{
if (this_window == window)
return PR_TRUE;
this_window = gdk_window_get_parent(this_window);
}
return PR_FALSE;
}
//==============================================================
void
handle_xlib_shell_event(GdkSuperWin *superwin, XEvent *event, gpointer p)
{
nsWindow *window = (nsWindow *)p;
switch(event->xany.type) {
case ConfigureNotify:
window->HandleXlibConfigureNotifyEvent(event);
break;
default:
break;
}
}
//==============================================================
void
handle_superwin_paint(gint aX, gint aY,
gint aWidth, gint aHeight, gpointer aData)
{
nsWindow *window = (nsWindow *)aData;
nsRect rect;
rect.x = aX;
rect.y = aY;
rect.width = aWidth;
rect.height = aHeight;
window->Invalidate(rect, PR_FALSE);
}
void
handle_superwin_flush(gpointer aData)
{
nsWindow *window = (nsWindow *)aData;
window->Update();
}
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