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-// XDisplay.cc for Openbox
-// Copyright (c) 2002 - 2002 Ben Janens (ben at orodu.net)
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the "Software"),
-// to deal in the Software without restriction, including without limitation
-// the rights to use, copy, modify, merge, publish, distribute, sublicense,
-// and/or sell copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
-// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-// DEALINGS IN THE SOFTWARE.
-
-#ifdef HAVE_CONFIG_H
-# include "../config.h"
-#endif
-
-#ifdef HAVE_UNNISTD_H
-# include <unistd.h>
-#endif
-
-#ifdef HAVE_FCNTL_H
-# include <fcntl.h>
-#endif
-
-#ifdef SHAPE
-# include <X11/extensions/shape.h>
-#endif
-
-#include "XDisplay.h"
-#include "Util.h"
-#include <iostream>
-#include <algorithm>
-
-using std::cerr;
-using std::endl;
-
-std::string XDisplay::_app_name;
-Window XDisplay::_last_bad_window = None;
-
-/*
- * X error handler to handle all X errors while the application is
- * running.
- */
-int XDisplay::errorHandler(Display *d, XErrorEvent *e) {
-#ifdef DEBUG
- char errtxt[128];
- XGetErrorText(d, e->error_code, errtxt, sizeof(errtxt)/sizeof(char));
- cerr << _app_name.c_str() << ": X error: " <<
- errtxt << "(" << e->error_code << ") opcodes " <<
- e->request_code << "/" << e->minor_code << endl;
- cerr.flags(std::ios_base::hex);
- cerr << " resource 0x" << e->resourceid << endl;
- cerr.flags(std::ios_base::dec);
-#endif
-
- if (e->error_code == BadWindow)
- _last_bad_window = e->resourceid;
-
- return False;
-}
-
-
-XDisplay::XDisplay(const std::string &application_name, const char *dpyname) {
- _app_name = application_name;
- _grabs = 0;
- _hasshape = false;
-
- _display = XOpenDisplay(dpyname);
- if (_display == NULL) {
- cerr << "Could not open display. Connection to X server failed.\n";
- ::exit(2);
- }
- if (-1 == fcntl(ConnectionNumber(_display), F_SETFD, 1)) {
- cerr << "Could not mark display connection as close-on-exec.\n";
- ::exit(2);
- }
- _name = XDisplayName(dpyname);
-
- XSetErrorHandler(errorHandler);
-
-#ifdef SHAPE
- int waste;
- _hasshape = XShapeQueryExtension(_display, &_shape_event_base, &waste);
-#endif // SHAPE
-
-#ifndef NOCLOBBER
- getLockModifiers();
-#endif
-}
-
-
-XDisplay::~XDisplay() {
- std::for_each(_screens.begin(), _screens.end(), PointerAssassin());
- XCloseDisplay(_display);
-}
-
-
-/*
- * Grab the X server
- */
-void XDisplay::grab() {
- if (_grabs++ == 0)
- XGrabServer(_display);
-}
-
-
-/*
- * Release the X server from a grab
- */
-void XDisplay::ungrab() {
- if (--_grabs == 0)
- XUngrabServer(_display);
-}
-
-
-/*
- * Gets the next event on the queue from the X server.
- *
- * Returns: true if e contains a new event; false if there is no event to be
- * returned.
- */
-bool XDisplay::nextEvent(XEvent &e) {
- if(!XPending(_display))
- return false;
- XNextEvent(_display, &e);
- if (_last_bad_window != None) {
- if (e.xany.window == _last_bad_window) {
- cerr << "XDisplay::nextEvent(): Removing event for bad window from " <<
- "event queue\n";
- return false;
- } else
- _last_bad_window = None;
- }
- return true;
-}
-
-
-int XDisplay::connectionNumber() const {
- return ConnectionNumber(_display);
-}
-
-
-/*
- * Creates a font cursor in the X server and returns it.
- */
-Cursor createCursor(unsigned int shape) const {
- return XCreateFontCursor(_display, shape);
-}
-
-
-#ifndef NOCLOBBER
-void XDisplay::getLockModifers() {
- NumLockMask = ScrollLockMask = 0;
-
- const XModifierKeymap* const modmap = XGetModifierMapping(display);
- if (modmap && modmap->max_keypermod > 0) {
- const int mask_table[] = {
- ShiftMask, LockMask, ControlMask, Mod1Mask,
- Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
- };
- const size_t size = (sizeof(mask_table) / sizeof(mask_table[0])) *
- modmap->max_keypermod;
- // get the values of the keyboard lock modifiers
- // Note: Caps lock is not retrieved the same way as Scroll and Num lock
- // since it doesn't need to be.
- const KeyCode num_lock_code = XKeysymToKeycode(display, XK_Num_Lock);
- const KeyCode scroll_lock_code = XKeysymToKeycode(display, XK_Scroll_Lock);
-
- for (size_t cnt = 0; cnt < size; ++cnt) {
- if (! modmap->modifiermap[cnt]) continue;
-
- if (num_lock_code == modmap->modifiermap[cnt])
- NumLockMask = mask_table[cnt / modmap->max_keypermod];
- if (scroll_lock_code == modmap->modifiermap[cnt])
- ScrollLockMask = mask_table[cnt / modmap->max_keypermod];
- }
- }
-
- MaskList[0] = 0;
- MaskList[1] = LockMask;
- MaskList[2] = NumLockMask;
- MaskList[3] = ScrollLockMask;
- MaskList[4] = LockMask | NumLockMask;
- MaskList[5] = NumLockMask | ScrollLockMask;
- MaskList[6] = LockMask | ScrollLockMask;
- MaskList[7] = LockMask | NumLockMask | ScrollLockMask;
-
- if (modmap) XFreeModifiermap(const_cast<XModifierKeymap*>(modmap));
-}
-#endif // NOCLOBBER
-
-unsigned int XDisplay::stripModifiers(const unsigned int state) const {
-#ifndef NOCLOBBER
- return state &= ~(NumLockMask() | ScrollLockMask | LockMask);
-#else
- return state &= ~LockMask;
-#endif
-}
-
-
-/*
- * Verifies that a window has not requested to be destroyed/unmapped, so
- * if it is a valid window or not.
- * Returns: true if the window is valid; false if it is no longer valid.
- */
-bool XDisplay::validateWindow(Window window) {
- XEvent event;
- if (XCheckTypedWindowEvent(_display, window, DestroyNotify, &event)) {
- XPutBackEvent(display, &event);
- return false;
- }
- return true;
-}
-
-
-/*
- * Grabs a button, but also grabs the button in every possible combination with
- * the keyboard lock keys, so that they do not cancel out the event.
- */
-void BaseDisplay::grabButton(unsigned int button, unsigned int modifiers,
- Window grab_window, Bool owner_events,
- unsigned int event_mask, int pointer_mode,
- int keybaord_mode, Window confine_to,
- Cursor cursor) const
-{
-#ifndef NOCLOBBER
- for (size_t cnt = 0; cnt < 8; ++cnt)
- XGrabButton(_display, button, modifiers | MaskList[cnt], grab_window,
- owner_events, event_mask, pointer_mode, keybaord_mode,
- confine_to, cursor);
-#else // NOCLOBBER
- XGrabButton(_display, button, modifiers, grab_window,
- owner_events, event_mask, pointer_mode, keybaord_mode,
- confine_to, cursor);
-#endif // NOCLOBBER
-}
-
-
-/*
- * Releases the grab on a button, and ungrabs all possible combinations of the
- * keyboard lock keys.
- */
-void BaseDisplay::ungrabButton(unsigned int button, unsigned int modifiers,
- Window grab_window) const {
-#ifndef NOCLOBBER
- for (size_t cnt = 0; cnt < 8; ++cnt)
- XUngrabButton(display, button, modifiers | MaskList[cnt], grab_window);
-#else // NOCLOBBER
- XUngrabButton(display, button, modifiers, grab_window);
-#endif // NOCLOBBER
-}
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