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/*----------------------------------------------------------------------* |
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* File: rxvttoolkit.C |
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*----------------------------------------------------------------------* |
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* |
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* All portions of code are copyright by their respective author/s. |
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* Copyright (c) 2003-2007 Marc Lehmann <pcg@goof.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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|
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#include "../config.h" |
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#include <rxvt.h> |
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#include <rxvttoolkit.h> |
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|
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#include <unistd.h> |
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#include <fcntl.h> |
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|
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#include <sys/utsname.h> |
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#include <sys/socket.h> |
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#include <sys/un.h> |
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|
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#if XFT |
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# include <X11/extensions/Xrender.h> |
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#endif |
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|
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const char *const xa_names[] = |
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{ |
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"TEXT", |
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"COMPOUND_TEXT", |
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"UTF8_STRING", |
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"MULTIPLE", |
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"TARGETS", |
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"TIMESTAMP", |
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"VT_SELECTION", |
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"INCR", |
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"WM_PROTOCOLS", |
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"WM_DELETE_WINDOW", |
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"CLIPBOARD", |
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"AVERAGE_WIDTH", |
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"WEIGHT_NAME", |
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"SLANT", |
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"CHARSET_REGISTRY", |
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"CHARSET_ENCODING", |
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#if ENABLE_FRILLS |
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"_MOTIF_WM_HINTS", |
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#endif |
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#if ENABLE_EWMH |
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"_NET_WM_PID", |
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"_NET_WM_NAME", |
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"_NET_WM_ICON_NAME", |
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"_NET_WM_PING", |
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"_NET_WM_ICON", |
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#endif |
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#if USE_XIM |
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"WM_LOCALE_NAME", |
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"XIM_SERVERS", |
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#endif |
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#ifdef ENABLE_TRANSPARENCY |
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"_XROOTPMAP_ID", |
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"ESETROOT_PMAP_ID", |
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#endif |
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#if ENABLE_XEMBED |
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"_XEMBED", |
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"_XEMBED_INFO", |
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#endif |
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#if !ENABLE_MINIMAL |
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"SCREEN_RESOURCES", |
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"XDCCC_LINEAR_RGB_CORRECTION", |
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"XDCCC_LINEAR_RGB_MATRICES", |
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"WM_COLORMAP_WINDOWS", |
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"WM_STATE", |
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"cursor", |
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# if USE_XIM |
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"TRANSPORT", |
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"LOCALES", |
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"_XIM_PROTOCOL", |
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"_XIM_XCONNECT", |
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"_XIM_MOREDATA", |
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# endif |
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#endif |
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}; |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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refcounted::refcounted (const char *id) |
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{ |
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this->id = strdup (id); |
100 |
} |
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|
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refcounted::~refcounted () |
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{ |
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free (id); |
105 |
} |
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|
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template<class T> |
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T *refcache<T>::get (const char *id) |
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{ |
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for (T **i = this->begin (); i < this->end (); ++i) |
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{ |
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if (!strcmp (id, (*i)->id)) |
113 |
{ |
114 |
++(*i)->referenced; |
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(*i)->ref_next (); |
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return *i; |
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} |
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} |
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|
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T *obj = new T (id); |
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|
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if (obj && obj->ref_init ()) |
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{ |
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obj->referenced = 1; |
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this->push_back (obj); |
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return obj; |
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} |
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else |
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{ |
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delete obj; |
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return 0; |
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} |
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} |
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|
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template<class T> |
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void refcache<T>::put (T *obj) |
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{ |
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if (!obj) |
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return; |
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|
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if (!--obj->referenced) |
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{ |
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this->erase (find (this->begin (), this->end (), obj)); |
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delete obj; |
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} |
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} |
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|
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template<class T> |
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void refcache<T>::clear () |
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{ |
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while (this->size ()) |
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put (*this->begin ()); |
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} |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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#ifdef USE_XIM |
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|
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static void |
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#if XIMCB_PROTO_BROKEN |
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im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3) |
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#else |
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im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3) |
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#endif |
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{ |
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rxvt_xim *xim = (rxvt_xim *)client_data; |
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rxvt_display *display = xim->display; |
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|
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xim->xim = 0; |
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|
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display->xims.erase (find (display->xims.begin (), display->xims.end (), xim)); |
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display->im_change_cb (); |
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} |
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|
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bool |
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rxvt_xim::ref_init () |
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{ |
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display = GET_R->display; //HACK: TODO |
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|
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xim = XOpenIM (display->dpy, 0, 0, 0); |
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|
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if (!xim) |
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return false; |
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|
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XIMCallback ximcallback; |
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ximcallback.client_data = (XPointer)this; |
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ximcallback.callback = im_destroy_cb; |
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|
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XSetIMValues (xim, XNDestroyCallback, &ximcallback, (char *)0); |
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|
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return true; |
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} |
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|
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rxvt_xim::~rxvt_xim () |
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{ |
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if (xim) |
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XCloseIM (xim); |
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} |
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|
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#endif |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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#if XFT |
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rxvt_drawable::~rxvt_drawable () |
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{ |
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if (xftdrawable) |
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XftDrawDestroy (xftdrawable); |
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} |
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|
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rxvt_drawable::operator XftDraw *() |
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{ |
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if (!xftdrawable) |
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xftdrawable = XftDrawCreate (screen->dpy, drawable, screen->visual, screen->cmap); |
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|
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return xftdrawable; |
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} |
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#endif |
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|
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///////////////////////////////////////////////////////////////////////////// |
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|
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#if XFT |
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|
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// not strictly necessary as it is only used with superclass of zero_initialised |
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rxvt_screen::rxvt_screen () |
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: scratch_area (0) |
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{ |
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} |
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|
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rxvt_drawable &rxvt_screen::scratch_drawable (int w, int h) |
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{ |
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// it's actually faster to re-allocate every time. don't ask me |
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// why, but its likely no big deal there are no roundtrips |
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// (I think/hope). |
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if (!scratch_area || w > scratch_w || h > scratch_h || 1/*D*/) |
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{ |
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if (scratch_area) |
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{ |
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XFreePixmap (dpy, scratch_area->drawable); |
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delete scratch_area; |
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} |
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|
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Pixmap pm = XCreatePixmap (dpy, RootWindowOfScreen (ScreenOfDisplay (dpy, display->screen)), |
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scratch_w = w, scratch_h = h, depth); |
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|
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scratch_area = new rxvt_drawable (this, pm); |
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} |
248 |
|
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return *scratch_area; |
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} |
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|
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#endif |
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|
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void |
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rxvt_screen::set (rxvt_display *disp) |
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{ |
257 |
display = disp; |
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dpy = disp->dpy; |
259 |
|
260 |
Screen *screen = ScreenOfDisplay (dpy, disp->screen); |
261 |
|
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depth = DefaultDepthOfScreen (screen); |
263 |
visual = DefaultVisualOfScreen (screen); |
264 |
cmap = DefaultColormapOfScreen (screen); |
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} |
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|
267 |
void |
268 |
rxvt_screen::select_visual (int bitdepth) |
269 |
{ |
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#if XFT |
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XVisualInfo vinfo; |
272 |
|
273 |
if (XMatchVisualInfo (dpy, display->screen, bitdepth, TrueColor, &vinfo)) |
274 |
{ |
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depth = bitdepth; |
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visual = vinfo.visual; |
277 |
cmap = XCreateColormap (dpy, display->root, visual, AllocNone); |
278 |
} |
279 |
#endif |
280 |
} |
281 |
|
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void |
283 |
rxvt_screen::clear () |
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{ |
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#if XFT |
286 |
if (scratch_area) |
287 |
{ |
288 |
XFreePixmap (dpy, scratch_area->drawable); |
289 |
delete scratch_area; |
290 |
} |
291 |
#endif |
292 |
|
293 |
if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (dpy, display->screen))) |
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XFreeColormap (dpy, cmap); |
295 |
} |
296 |
|
297 |
///////////////////////////////////////////////////////////////////////////// |
298 |
|
299 |
rxvt_display::rxvt_display (const char *id) |
300 |
: refcounted (id) |
301 |
, selection_owner (0) |
302 |
, clipboard_owner (0) |
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{ |
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x_ev .set<rxvt_display, &rxvt_display::x_cb > (this); |
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flush_ev.set<rxvt_display, &rxvt_display::flush_cb> (this); |
306 |
} |
307 |
|
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XrmDatabase |
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rxvt_display::get_resources (bool refresh) |
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{ |
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char *homedir = getenv ("HOME"); |
312 |
char fname[1024]; |
313 |
|
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/* |
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* get resources using the X library function |
316 |
*/ |
317 |
char *displayResource, *xe; |
318 |
XrmDatabase rdb1, database = 0; |
319 |
|
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// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20 |
321 |
// as opposed to "standard practise", we always read in ~/.Xdefaults |
322 |
|
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// 6. System wide per application default file. |
324 |
|
325 |
/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */ |
326 |
if ((xe = getenv ("XAPPLRESDIR"))) |
327 |
{ |
328 |
snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS); |
329 |
|
330 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
331 |
XrmMergeDatabases (rdb1, &database); |
332 |
} |
333 |
|
334 |
// 5. User's per application default file. |
335 |
// none |
336 |
|
337 |
// 4. User's defaults file. |
338 |
if (homedir) |
339 |
{ |
340 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir); |
341 |
|
342 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
343 |
XrmMergeDatabases (rdb1, &database); |
344 |
} |
345 |
|
346 |
/* Get any Xserver defaults */ |
347 |
if (refresh) |
348 |
{ |
349 |
// fucking xlib keeps a copy of the rm string |
350 |
Atom actual_type; |
351 |
int actual_format; |
352 |
unsigned long nitems, nremaining; |
353 |
char *val = 0; |
354 |
|
355 |
#if XLIB_ILLEGAL_ACCESS |
356 |
if (dpy->xdefaults) |
357 |
XFree (dpy->xdefaults); |
358 |
#endif |
359 |
|
360 |
if (XGetWindowProperty (dpy, RootWindow (dpy, 0), XA_RESOURCE_MANAGER, |
361 |
0L, 100000000L, False, |
362 |
XA_STRING, &actual_type, &actual_format, |
363 |
&nitems, &nremaining, |
364 |
(unsigned char **)&val) == Success |
365 |
&& actual_type == XA_STRING |
366 |
&& actual_format == 8) |
367 |
displayResource = val; |
368 |
else |
369 |
{ |
370 |
displayResource = 0; |
371 |
|
372 |
if (val) |
373 |
XFree (val); |
374 |
} |
375 |
|
376 |
#if XLIB_ILLEGAL_ACCESS |
377 |
dpy->xdefaults = displayResource; |
378 |
#endif |
379 |
} |
380 |
else |
381 |
displayResource = XResourceManagerString (dpy); |
382 |
|
383 |
if (displayResource) |
384 |
{ |
385 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
386 |
XrmMergeDatabases (rdb1, &database); |
387 |
} |
388 |
|
389 |
#if !XLIB_ILLEGAL_ACCESS |
390 |
if (refresh && displayResource) |
391 |
XFree (displayResource); |
392 |
#endif |
393 |
|
394 |
/* Get screen specific resources */ |
395 |
displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen)); |
396 |
|
397 |
if (displayResource) |
398 |
{ |
399 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
400 |
/* Merge with screen-independent resources */ |
401 |
XrmMergeDatabases (rdb1, &database); |
402 |
|
403 |
XFree (displayResource); |
404 |
} |
405 |
|
406 |
// 3. User's per host defaults file |
407 |
/* Add in XENVIRONMENT file */ |
408 |
if ((xe = getenv ("XENVIRONMENT")) |
409 |
&& (rdb1 = XrmGetFileDatabase (xe))) |
410 |
XrmMergeDatabases (rdb1, &database); |
411 |
else if (homedir) |
412 |
{ |
413 |
struct utsname un; |
414 |
|
415 |
if (!uname (&un)) |
416 |
{ |
417 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename); |
418 |
|
419 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
420 |
XrmMergeDatabases (rdb1, &database); |
421 |
} |
422 |
} |
423 |
|
424 |
return database; |
425 |
} |
426 |
|
427 |
bool rxvt_display::ref_init () |
428 |
{ |
429 |
#ifdef LOCAL_X_IS_UNIX |
430 |
if (id[0] == ':') |
431 |
{ |
432 |
if (!(val = rxvt_temp_buf<char> (5 + strlen (id) + 1))) |
433 |
return false; |
434 |
strcpy (val, "unix/"); |
435 |
strcat (val, id); |
436 |
dpy = XOpenDisplay (val); |
437 |
} |
438 |
else |
439 |
#endif |
440 |
dpy = 0; |
441 |
|
442 |
if (!dpy) |
443 |
dpy = XOpenDisplay (id); |
444 |
|
445 |
if (!dpy) |
446 |
return false; |
447 |
|
448 |
screen = DefaultScreen (dpy); |
449 |
root = DefaultRootWindow (dpy); |
450 |
|
451 |
assert (sizeof (xa_names) / sizeof (char *) == NUM_XA); |
452 |
XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa); |
453 |
|
454 |
XrmSetDatabase (dpy, get_resources (false)); |
455 |
|
456 |
#ifdef POINTER_BLANK |
457 |
XColor blackcolour; |
458 |
blackcolour.red = 0; |
459 |
blackcolour.green = 0; |
460 |
blackcolour.blue = 0; |
461 |
Font f = XLoadFont (dpy, "fixed"); |
462 |
blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ', |
463 |
&blackcolour, &blackcolour); |
464 |
XUnloadFont (dpy, f); |
465 |
#endif |
466 |
|
467 |
int fd = XConnectionNumber (dpy); |
468 |
|
469 |
// try to detect whether we have a local connection. |
470 |
// assume unix domain socket == local, everything else not |
471 |
// TODO: might want to check for inet/127.0.0.1 |
472 |
is_local = 0; |
473 |
sockaddr_un sa; |
474 |
socklen_t sl = sizeof (sa); |
475 |
|
476 |
if (!getsockname (fd, (sockaddr *)&sa, &sl)) |
477 |
is_local = sa.sun_family == AF_UNIX; |
478 |
|
479 |
flush_ev.start (); |
480 |
x_ev.start (fd, ev::READ); |
481 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
482 |
|
483 |
XSelectInput (dpy, root, PropertyChangeMask); |
484 |
|
485 |
flush (); |
486 |
|
487 |
return true; |
488 |
} |
489 |
|
490 |
void |
491 |
rxvt_display::ref_next () |
492 |
{ |
493 |
// TODO: somehow check whether the database files/resources changed |
494 |
// before affording re-loading/parsing |
495 |
XrmDestroyDatabase (XrmGetDatabase (dpy)); |
496 |
XrmSetDatabase (dpy, get_resources (true)); |
497 |
} |
498 |
|
499 |
rxvt_display::~rxvt_display () |
500 |
{ |
501 |
if (!dpy) |
502 |
return; |
503 |
|
504 |
#ifdef POINTER_BLANK |
505 |
XFreeCursor (dpy, blank_cursor); |
506 |
#endif |
507 |
x_ev.stop (); |
508 |
flush_ev.stop (); |
509 |
#ifdef USE_XIM |
510 |
xims.clear (); |
511 |
#endif |
512 |
XCloseDisplay (dpy); |
513 |
} |
514 |
|
515 |
#ifdef USE_XIM |
516 |
void rxvt_display::im_change_cb () |
517 |
{ |
518 |
for (im_watcher **i = imw.begin (); i != imw.end (); ++i) |
519 |
(*i)->call (); |
520 |
} |
521 |
|
522 |
void rxvt_display::im_change_check () |
523 |
{ |
524 |
// try to only call im_change_cb when a new input method |
525 |
// registers, as xlib crashes due to a race otherwise. |
526 |
Atom actual_type, *atoms; |
527 |
int actual_format; |
528 |
unsigned long nitems, bytes_after; |
529 |
|
530 |
if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L, |
531 |
False, XA_ATOM, &actual_type, &actual_format, |
532 |
&nitems, &bytes_after, (unsigned char **)&atoms) |
533 |
!= Success) |
534 |
return; |
535 |
|
536 |
if (actual_type == XA_ATOM && actual_format == 32) |
537 |
for (int i = 0; i < nitems; i++) |
538 |
if (XGetSelectionOwner (dpy, atoms[i])) |
539 |
{ |
540 |
im_change_cb (); |
541 |
break; |
542 |
} |
543 |
|
544 |
XFree (atoms); |
545 |
} |
546 |
#endif |
547 |
|
548 |
void rxvt_display::x_cb (ev::io &w, int revents) |
549 |
{ |
550 |
flush_ev.start (); |
551 |
} |
552 |
|
553 |
void rxvt_display::flush_cb (ev::prepare &w, int revents) |
554 |
{ |
555 |
while (XEventsQueued (dpy, QueuedAfterFlush)) |
556 |
do |
557 |
{ |
558 |
XEvent xev; |
559 |
XNextEvent (dpy, &xev); |
560 |
|
561 |
#ifdef USE_XIM |
562 |
if (!XFilterEvent (&xev, None)) |
563 |
{ |
564 |
if (xev.type == PropertyNotify |
565 |
&& xev.xany.window == root |
566 |
&& xev.xproperty.atom == xa[XA_XIM_SERVERS]) |
567 |
im_change_check (); |
568 |
#endif |
569 |
if (xev.type == MappingNotify) |
570 |
XRefreshKeyboardMapping (&xev.xmapping); |
571 |
|
572 |
for (int i = xw.size (); i--; ) |
573 |
{ |
574 |
if (!xw[i]) |
575 |
xw.erase_unordered (i); |
576 |
else if (xw[i]->window == xev.xany.window) |
577 |
xw[i]->call (xev); |
578 |
} |
579 |
#ifdef USE_XIM |
580 |
} |
581 |
#endif |
582 |
} |
583 |
while (XEventsQueued (dpy, QueuedAlready)); |
584 |
|
585 |
w.stop (); |
586 |
} |
587 |
|
588 |
void rxvt_display::reg (xevent_watcher *w) |
589 |
{ |
590 |
if (!w->active) |
591 |
{ |
592 |
xw.push_back (w); |
593 |
w->active = xw.size (); |
594 |
} |
595 |
} |
596 |
|
597 |
void rxvt_display::unreg (xevent_watcher *w) |
598 |
{ |
599 |
if (w->active) |
600 |
{ |
601 |
xw[w->active - 1] = 0; |
602 |
w->active = 0; |
603 |
} |
604 |
} |
605 |
|
606 |
void rxvt_display::set_selection_owner (rxvt_term *owner, bool clipboard) |
607 |
{ |
608 |
rxvt_term * &cur_owner = !clipboard ? selection_owner : clipboard_owner; |
609 |
|
610 |
if (cur_owner && cur_owner != owner) |
611 |
{ |
612 |
rxvt_term *term = cur_owner; |
613 |
term->selection_clear (clipboard); |
614 |
term->flush (); |
615 |
} |
616 |
|
617 |
cur_owner = owner; |
618 |
} |
619 |
|
620 |
#ifdef USE_XIM |
621 |
|
622 |
void rxvt_display::reg (im_watcher *w) |
623 |
{ |
624 |
imw.push_back (w); |
625 |
} |
626 |
|
627 |
void rxvt_display::unreg (im_watcher *w) |
628 |
{ |
629 |
imw.erase (find (imw.begin (), imw.end (), w)); |
630 |
} |
631 |
|
632 |
rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers) |
633 |
{ |
634 |
char *id; |
635 |
int l, m; |
636 |
|
637 |
l = strlen (locale); |
638 |
m = strlen (modifiers); |
639 |
|
640 |
if (!(id = rxvt_temp_buf<char> (l + m + 2))) |
641 |
return 0; |
642 |
|
643 |
memcpy (id, locale, l); id[l] = '\n'; |
644 |
memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0; |
645 |
|
646 |
rxvt_xim *xim = xims.get (id); |
647 |
|
648 |
return xim; |
649 |
} |
650 |
|
651 |
void rxvt_display::put_xim (rxvt_xim *xim) |
652 |
{ |
653 |
# if XLIB_IS_RACEFREE |
654 |
xims.put (xim); |
655 |
# endif |
656 |
} |
657 |
|
658 |
#endif |
659 |
|
660 |
Atom rxvt_display::atom (const char *name) |
661 |
{ |
662 |
return XInternAtom (dpy, name, False); |
663 |
} |
664 |
|
665 |
///////////////////////////////////////////////////////////////////////////// |
666 |
|
667 |
template class refcache<rxvt_display>; |
668 |
refcache<rxvt_display> displays; |
669 |
|
670 |
///////////////////////////////////////////////////////////////////////////// |
671 |
// |
672 |
|
673 |
static unsigned int |
674 |
insert_component (unsigned int value, unsigned int mask, unsigned int shift) |
675 |
{ |
676 |
return (value * (mask + 1) >> 16) << shift; |
677 |
} |
678 |
|
679 |
bool |
680 |
rxvt_color::alloc (rxvt_screen *screen, const rgba &color) |
681 |
{ |
682 |
//TODO: only supports 24 bit |
683 |
int alpha = color.a >= 0xff00 ? 0xffff : color.a; |
684 |
|
685 |
#if XFT |
686 |
XRenderPictFormat *format; |
687 |
|
688 |
// FUCKING Xft gets it wrong, of course, so work around it. |
689 |
// Transparency users should eat shit and die, and then |
690 |
// XRenderQueryPictIndexValues themselves plenty. |
691 |
if ((screen->visual->c_class == TrueColor) |
692 |
&& (format = XRenderFindVisualFormat (screen->dpy, screen->visual))) |
693 |
{ |
694 |
// the fun lies in doing everything manually... |
695 |
c.color.red = color.r; |
696 |
c.color.green = color.g; |
697 |
c.color.blue = color.b; |
698 |
c.color.alpha = alpha; |
699 |
|
700 |
c.pixel = insert_component (color.r, format->direct.redMask , format->direct.red ) |
701 |
| insert_component (color.g, format->direct.greenMask, format->direct.green) |
702 |
| insert_component (color.b, format->direct.blueMask , format->direct.blue ) |
703 |
| insert_component (alpha , format->direct.alphaMask, format->direct.alpha); |
704 |
|
705 |
return true; |
706 |
} |
707 |
else |
708 |
{ |
709 |
XRenderColor d; |
710 |
|
711 |
d.red = color.r; |
712 |
d.green = color.g; |
713 |
d.blue = color.b; |
714 |
d.alpha = alpha; |
715 |
|
716 |
return XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c); |
717 |
} |
718 |
#else |
719 |
c.red = color.r; |
720 |
c.green = color.g; |
721 |
c.blue = color.b; |
722 |
|
723 |
if (screen->visual->c_class == TrueColor) |
724 |
{ |
725 |
c.pixel = (color.r >> (16 - rxvt_popcount (screen->visual->red_mask )) << rxvt_ctz (screen->visual->red_mask )) |
726 |
| (color.g >> (16 - rxvt_popcount (screen->visual->green_mask)) << rxvt_ctz (screen->visual->green_mask)) |
727 |
| (color.b >> (16 - rxvt_popcount (screen->visual->blue_mask )) << rxvt_ctz (screen->visual->blue_mask )); |
728 |
|
729 |
return true; |
730 |
} |
731 |
else if (XAllocColor (screen->dpy, screen->cmap, &c)) |
732 |
return true; |
733 |
else |
734 |
c.pixel = (color.r + color.g + color.b) > 128*3 |
735 |
? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy)) |
736 |
: BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy)); |
737 |
#endif |
738 |
|
739 |
return false; |
740 |
} |
741 |
|
742 |
bool |
743 |
rxvt_color::set (rxvt_screen *screen, const char *name) |
744 |
{ |
745 |
rgba c; |
746 |
char eos; |
747 |
int skip; |
748 |
|
749 |
c.a = rgba::MAX_CC; |
750 |
|
751 |
// parse the nonstandard "[alphapercent]" prefix |
752 |
if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip)) |
753 |
{ |
754 |
c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a); |
755 |
name += skip; |
756 |
} |
757 |
|
758 |
// parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format |
759 |
if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos)) |
760 |
{ |
761 |
XColor xc; |
762 |
|
763 |
if (XParseColor (screen->dpy, screen->cmap, name, &xc)) |
764 |
{ |
765 |
c.r = xc.red; |
766 |
c.g = xc.green; |
767 |
c.b = xc.blue; |
768 |
} |
769 |
else |
770 |
{ |
771 |
c.r = 0xffff; |
772 |
c.g = 0x6969; |
773 |
c.b = 0xb4b4; |
774 |
|
775 |
rxvt_warn ("unable to parse color '%s', using pink instead.\n", name); |
776 |
} |
777 |
} |
778 |
|
779 |
return set (screen, c); |
780 |
} |
781 |
|
782 |
bool |
783 |
rxvt_color::set (rxvt_screen *screen, const rgba &color) |
784 |
{ |
785 |
bool got = alloc (screen, color); |
786 |
|
787 |
#if !ENABLE_MINIMAL |
788 |
int cmap_size = screen->visual->map_entries; |
789 |
|
790 |
if (!got |
791 |
&& screen->visual->c_class == PseudoColor |
792 |
&& cmap_size < 4096) |
793 |
{ |
794 |
XColor *colors = new XColor [screen->visual->map_entries]; |
795 |
|
796 |
for (int i = 0; i < cmap_size; i++) |
797 |
colors [i].pixel = i; |
798 |
|
799 |
// many kilobytes transfer per colour, but pseudocolor isn't worth |
800 |
// many extra optimisations. |
801 |
XQueryColors (screen->dpy, screen->cmap, colors, cmap_size); |
802 |
|
803 |
int diff = 0x7fffffffUL; |
804 |
XColor *best = colors; |
805 |
|
806 |
for (int i = 0; i < cmap_size; i++) |
807 |
{ |
808 |
int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2)) |
809 |
+ (squared_diff<int> (color.g >> 2, colors [i].green >> 2)) |
810 |
+ (squared_diff<int> (color.b >> 2, colors [i].blue >> 2)); |
811 |
|
812 |
if (d < diff) |
813 |
{ |
814 |
diff = d; |
815 |
best = colors + i; |
816 |
} |
817 |
} |
818 |
|
819 |
//rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n", |
820 |
// color.r, color.g, color.b, best->red, best->green, best->blue, diff); |
821 |
|
822 |
got = alloc (screen, rgba (best->red, best->green, best->blue)); |
823 |
|
824 |
delete [] colors; |
825 |
} |
826 |
#endif |
827 |
|
828 |
return got; |
829 |
} |
830 |
|
831 |
void |
832 |
rxvt_color::get (rgba &color) |
833 |
{ |
834 |
#if XFT |
835 |
color.r = c.color.red; |
836 |
color.g = c.color.green; |
837 |
color.b = c.color.blue; |
838 |
color.a = c.color.alpha; |
839 |
#else |
840 |
color.r = c.red; |
841 |
color.g = c.green; |
842 |
color.b = c.blue; |
843 |
color.a = rgba::MAX_CC; |
844 |
#endif |
845 |
} |
846 |
|
847 |
void |
848 |
rxvt_color::get (XColor &color) |
849 |
{ |
850 |
rgba c; |
851 |
get (c); |
852 |
|
853 |
color.red = c.r; |
854 |
color.green = c.g; |
855 |
color.blue = c.b; |
856 |
color.pixel = (Pixel)*this; |
857 |
} |
858 |
|
859 |
void |
860 |
rxvt_color::free (rxvt_screen *screen) |
861 |
{ |
862 |
if (screen->visual->c_class == TrueColor) |
863 |
return; // nothing to do |
864 |
|
865 |
#if XFT |
866 |
XftColorFree (screen->dpy, screen->visual, screen->cmap, &c); |
867 |
#else |
868 |
XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes); |
869 |
#endif |
870 |
} |
871 |
|
872 |
void |
873 |
rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to) |
874 |
{ |
875 |
rgba c; |
876 |
get (c); |
877 |
|
878 |
result.set ( |
879 |
screen, |
880 |
rgba ( |
881 |
lerp (c.r, to.r, percent), |
882 |
lerp (c.g, to.g, percent), |
883 |
lerp (c.b, to.b, percent), |
884 |
lerp (c.a, to.a, percent) |
885 |
) |
886 |
); |
887 |
} |
888 |
|