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/*--------------------------------*-C-*---------------------------------* |
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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) 2003-2004 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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|
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#ifndef NO_SLOW_LINK_SUPPORT |
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# include <sys/socket.h> |
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# include <sys/un.h> |
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#endif |
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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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#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 TRANSPARENT |
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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); |
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} |
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|
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refcounted::~refcounted () |
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{ |
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free (id); |
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} |
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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)) |
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{ |
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++(*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, 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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} |
244 |
|
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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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} |
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|
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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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{ |
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display = disp; |
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dpy = disp->dpy; |
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|
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Screen *screen = ScreenOfDisplay (dpy, disp->screen); |
263 |
|
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depth = DefaultDepthOfScreen (screen); |
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visual = DefaultVisualOfScreen (screen); |
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cmap = DefaultColormapOfScreen (screen); |
267 |
} |
268 |
|
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void |
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rxvt_screen::set (rxvt_display *disp, int bitdepth) |
271 |
{ |
272 |
set (disp); |
273 |
|
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#if XFT |
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XVisualInfo vinfo; |
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|
277 |
if (XMatchVisualInfo (dpy, display->screen, bitdepth, TrueColor, &vinfo)) |
278 |
{ |
279 |
depth = bitdepth; |
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visual = vinfo.visual; |
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cmap = XCreateColormap (dpy, disp->root, visual, AllocNone); |
282 |
} |
283 |
#endif |
284 |
} |
285 |
|
286 |
void |
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rxvt_screen::clear () |
288 |
{ |
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#if XFT |
290 |
if (scratch_area) |
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{ |
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XFreePixmap (dpy, scratch_area->drawable); |
293 |
delete scratch_area; |
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} |
295 |
#endif |
296 |
|
297 |
if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (dpy, display->screen))) |
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XFreeColormap (dpy, cmap); |
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} |
300 |
|
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///////////////////////////////////////////////////////////////////////////// |
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|
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rxvt_display::rxvt_display (const char *id) |
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: refcounted (id) |
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, x_ev (this, &rxvt_display::x_cb) |
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, selection_owner (0) |
307 |
{ |
308 |
} |
309 |
|
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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 = (char *)getenv ("HOME"); |
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char fname[1024]; |
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|
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/* |
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* get resources using the X library function |
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*/ |
319 |
char *displayResource, *xe; |
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XrmDatabase rdb1, database = 0; |
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|
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// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20 |
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|
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// 6. System wide per application default file. |
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|
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/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */ |
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if ((xe = (char *)getenv ("XAPPLRESDIR"))) |
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{ |
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snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS); |
330 |
|
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if ((rdb1 = XrmGetFileDatabase (fname))) |
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XrmMergeDatabases (rdb1, &database); |
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} |
334 |
|
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// 5. User's per application default file. |
336 |
// none |
337 |
|
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// 4. User's defaults file. |
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/* Get any Xserver defaults */ |
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if (refresh) |
341 |
{ |
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// fucking xlib keeps a copy of the rm string |
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Atom actual_type; |
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int actual_format; |
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unsigned long nitems, nremaining; |
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char *val = 0; |
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|
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#if XLIB_ILLEGAL_ACCESS |
349 |
if (dpy->xdefaults) |
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XFree (dpy->xdefaults); |
351 |
#endif |
352 |
|
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if (XGetWindowProperty (dpy, root, XA_RESOURCE_MANAGER, |
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0L, 100000000L, False, |
355 |
XA_STRING, &actual_type, &actual_format, |
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&nitems, &nremaining, |
357 |
(unsigned char **)&val) == Success |
358 |
&& actual_type == XA_STRING |
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&& actual_format == 8) |
360 |
displayResource = val; |
361 |
else |
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{ |
363 |
displayResource = 0; |
364 |
if (val) |
365 |
XFree(val); |
366 |
} |
367 |
|
368 |
#if XLIB_ILLEGAL_ACCESS |
369 |
dpy->xdefaults = displayResource; |
370 |
#endif |
371 |
} |
372 |
else |
373 |
displayResource = XResourceManagerString (dpy); |
374 |
|
375 |
if (displayResource) |
376 |
{ |
377 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
378 |
XrmMergeDatabases (rdb1, &database); |
379 |
} |
380 |
else if (homedir) |
381 |
{ |
382 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir); |
383 |
|
384 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
385 |
XrmMergeDatabases (rdb1, &database); |
386 |
} |
387 |
|
388 |
#if !XLIB_ILLEGAL_ACCESS |
389 |
if (refresh && displayResource) |
390 |
XFree (displayResource); |
391 |
#endif |
392 |
|
393 |
/* Get screen specific resources */ |
394 |
displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen)); |
395 |
|
396 |
if (displayResource) |
397 |
{ |
398 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
399 |
/* Merge with screen-independent resources */ |
400 |
XrmMergeDatabases (rdb1, &database); |
401 |
|
402 |
XFree (displayResource); |
403 |
} |
404 |
|
405 |
// 3. User's per host defaults file |
406 |
/* Add in XENVIRONMENT file */ |
407 |
if ((xe = (char *)getenv ("XENVIRONMENT")) |
408 |
&& (rdb1 = XrmGetFileDatabase (xe))) |
409 |
XrmMergeDatabases (rdb1, &database); |
410 |
else if (homedir) |
411 |
{ |
412 |
struct utsname un; |
413 |
|
414 |
if (!uname (&un)) |
415 |
{ |
416 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename); |
417 |
|
418 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
419 |
XrmMergeDatabases (rdb1, &database); |
420 |
} |
421 |
} |
422 |
|
423 |
return database; |
424 |
} |
425 |
|
426 |
bool rxvt_display::ref_init () |
427 |
{ |
428 |
#ifdef LOCAL_X_IS_UNIX |
429 |
if (id[0] == ':') |
430 |
{ |
431 |
val = rxvt_malloc (5 + strlen (id) + 1); |
432 |
strcpy (val, "unix/"); |
433 |
strcat (val, id); |
434 |
dpy = XOpenDisplay (val); |
435 |
free (val); |
436 |
} |
437 |
else |
438 |
#endif |
439 |
dpy = 0; |
440 |
|
441 |
if (!dpy) |
442 |
dpy = XOpenDisplay (id); |
443 |
|
444 |
if (!dpy) |
445 |
return false; |
446 |
|
447 |
screen = DefaultScreen (dpy); |
448 |
root = DefaultRootWindow (dpy); |
449 |
|
450 |
assert (sizeof (xa_names) / sizeof (char *) == NUM_XA); |
451 |
XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa); |
452 |
|
453 |
XrmSetDatabase (dpy, get_resources (false)); |
454 |
|
455 |
#ifdef POINTER_BLANK |
456 |
XColor blackcolour; |
457 |
blackcolour.red = 0; |
458 |
blackcolour.green = 0; |
459 |
blackcolour.blue = 0; |
460 |
Font f = XLoadFont (dpy, "fixed"); |
461 |
blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ', |
462 |
&blackcolour, &blackcolour); |
463 |
XUnloadFont (dpy, f); |
464 |
#endif |
465 |
|
466 |
int fd = XConnectionNumber (dpy); |
467 |
|
468 |
#ifndef NO_SLOW_LINK_SUPPORT |
469 |
// try to detect wether we have a local connection. |
470 |
// assume unix domains 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_LOCAL; |
478 |
#endif |
479 |
|
480 |
x_ev.start (fd, EVENT_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 wether 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 |
#ifdef USE_XIM |
509 |
xims.clear (); |
510 |
#endif |
511 |
XCloseDisplay (dpy); |
512 |
} |
513 |
|
514 |
#ifdef USE_XIM |
515 |
void rxvt_display::im_change_cb () |
516 |
{ |
517 |
for (im_watcher **i = imw.begin (); i != imw.end (); ++i) |
518 |
(*i)->call (); |
519 |
} |
520 |
|
521 |
void rxvt_display::im_change_check () |
522 |
{ |
523 |
// try to only call im_change_cb when a new input method |
524 |
// registers, as xlib crashes due to a race otherwise. |
525 |
Atom actual_type, *atoms; |
526 |
int actual_format; |
527 |
unsigned long nitems, bytes_after; |
528 |
|
529 |
if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L, |
530 |
False, XA_ATOM, &actual_type, &actual_format, |
531 |
&nitems, &bytes_after, (unsigned char **)&atoms) |
532 |
!= Success ) |
533 |
return; |
534 |
|
535 |
if (actual_type == XA_ATOM && actual_format == 32) |
536 |
for (int i = 0; i < nitems; i++) |
537 |
if (XGetSelectionOwner (dpy, atoms[i])) |
538 |
{ |
539 |
im_change_cb (); |
540 |
break; |
541 |
} |
542 |
|
543 |
XFree (atoms); |
544 |
} |
545 |
#endif |
546 |
|
547 |
void rxvt_display::x_cb (io_watcher &w, short revents) |
548 |
{ |
549 |
do |
550 |
{ |
551 |
XEvent xev; |
552 |
XNextEvent (dpy, &xev); |
553 |
|
554 |
#ifdef USE_XIM |
555 |
if (!XFilterEvent (&xev, None)) |
556 |
{ |
557 |
if (xev.type == PropertyNotify |
558 |
&& xev.xany.window == root |
559 |
&& xev.xproperty.atom == xa[XA_XIM_SERVERS]) |
560 |
im_change_check (); |
561 |
#endif |
562 |
for (int i = xw.size (); i--; ) |
563 |
{ |
564 |
if (!xw[i]) |
565 |
xw.erase_unordered (i); |
566 |
else if (xw[i]->window == xev.xany.window) |
567 |
xw[i]->call (xev); |
568 |
} |
569 |
#ifdef USE_XIM |
570 |
} |
571 |
#endif |
572 |
} |
573 |
while (XEventsQueued (dpy, QueuedAlready)); |
574 |
|
575 |
XFlush (dpy); |
576 |
} |
577 |
|
578 |
void rxvt_display::flush () |
579 |
{ |
580 |
if (XEventsQueued (dpy, QueuedAlready)) |
581 |
x_cb (x_ev, EVENT_READ); |
582 |
|
583 |
XFlush (dpy); |
584 |
} |
585 |
|
586 |
void rxvt_display::reg (xevent_watcher *w) |
587 |
{ |
588 |
xw.push_back (w); |
589 |
w->active = xw.size (); |
590 |
} |
591 |
|
592 |
void rxvt_display::unreg (xevent_watcher *w) |
593 |
{ |
594 |
if (w->active) |
595 |
xw[w->active - 1] = 0; |
596 |
} |
597 |
|
598 |
void rxvt_display::set_selection_owner (rxvt_term *owner) |
599 |
{ |
600 |
if (selection_owner && selection_owner != owner) |
601 |
selection_owner->selection_clear (); |
602 |
|
603 |
selection_owner = owner; |
604 |
} |
605 |
|
606 |
#ifdef USE_XIM |
607 |
|
608 |
void rxvt_display::reg (im_watcher *w) |
609 |
{ |
610 |
imw.push_back (w); |
611 |
} |
612 |
|
613 |
void rxvt_display::unreg (im_watcher *w) |
614 |
{ |
615 |
imw.erase (find (imw.begin (), imw.end (), w)); |
616 |
} |
617 |
|
618 |
rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers) |
619 |
{ |
620 |
char *id; |
621 |
int l, m; |
622 |
|
623 |
l = strlen (locale); |
624 |
m = strlen (modifiers); |
625 |
|
626 |
if (!(id = (char *)malloc (l + m + 2))) |
627 |
return 0; |
628 |
|
629 |
memcpy (id, locale, l); id[l] = '\n'; |
630 |
memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0; |
631 |
|
632 |
rxvt_xim *xim = xims.get (id); |
633 |
|
634 |
free (id); |
635 |
|
636 |
return xim; |
637 |
} |
638 |
|
639 |
void rxvt_display::put_xim (rxvt_xim *xim) |
640 |
{ |
641 |
# if XLIB_IS_RACEFREE |
642 |
xims.put (xim); |
643 |
# endif |
644 |
} |
645 |
|
646 |
#endif |
647 |
|
648 |
Atom rxvt_display::atom (const char *name) |
649 |
{ |
650 |
return XInternAtom (dpy, name, False); |
651 |
} |
652 |
|
653 |
///////////////////////////////////////////////////////////////////////////// |
654 |
|
655 |
template class refcache<rxvt_display>; |
656 |
refcache<rxvt_display> displays; |
657 |
|
658 |
///////////////////////////////////////////////////////////////////////////// |
659 |
|
660 |
bool |
661 |
rxvt_color::alloc (rxvt_screen *screen, const rgba &color) |
662 |
{ |
663 |
#if XFT |
664 |
XRenderPictFormat *format; |
665 |
|
666 |
// FUCKING Xft gets it wrong, of course, so work around it. |
667 |
// Transparency users should eat shit and die, and then |
668 |
// XRenderQueryPictIndexValues themselves plenty. |
669 |
if ((screen->visual->c_class == TrueColor) |
670 |
&& (format = XRenderFindVisualFormat (screen->dpy, screen->visual))) |
671 |
{ |
672 |
// the fun lies in doing everything manually... |
673 |
c.color.red = color.r; |
674 |
c.color.green = color.g; |
675 |
c.color.blue = color.b; |
676 |
c.color.alpha = color.a; |
677 |
|
678 |
c.pixel = ((color.r * format->direct.redMask / rgba::MAX_CC) << format->direct.red ) |
679 |
| ((color.g * format->direct.greenMask / rgba::MAX_CC) << format->direct.green) |
680 |
| ((color.b * format->direct.blueMask / rgba::MAX_CC) << format->direct.blue ) |
681 |
| ((color.a * format->direct.alphaMask / rgba::MAX_CC) << format->direct.alpha); |
682 |
|
683 |
return true; |
684 |
} |
685 |
else |
686 |
{ |
687 |
XRenderColor d; |
688 |
|
689 |
d.red = color.r; |
690 |
d.green = color.g; |
691 |
d.blue = color.b; |
692 |
d.alpha = color.a; |
693 |
|
694 |
return XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c); |
695 |
} |
696 |
#else |
697 |
c.red = color.r; |
698 |
c.green = color.g; |
699 |
c.blue = color.b; |
700 |
|
701 |
if (screen->visual->c_class == TrueColor) |
702 |
{ |
703 |
c.pixel = (color.r * (screen->visual->red_mask >> ctz (screen->visual->red_mask )) |
704 |
/ rgba::MAX_CC) << ctz (screen->visual->red_mask ) |
705 |
| (color.g * (screen->visual->green_mask >> ctz (screen->visual->green_mask)) |
706 |
/ rgba::MAX_CC) << ctz (screen->visual->green_mask) |
707 |
| (color.b * (screen->visual->blue_mask >> ctz (screen->visual->blue_mask )) |
708 |
/ rgba::MAX_CC) << ctz (screen->visual->blue_mask ); |
709 |
|
710 |
return true; |
711 |
} |
712 |
else if (XAllocColor (screen->dpy, screen->cmap, &c)) |
713 |
return true; |
714 |
else |
715 |
c.pixel = (color.r + color.g + color.b) > 128*3 |
716 |
? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy)) |
717 |
: BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy)); |
718 |
#endif |
719 |
|
720 |
return false; |
721 |
} |
722 |
|
723 |
bool |
724 |
rxvt_color::set (rxvt_screen *screen, const char *name) |
725 |
{ |
726 |
rgba c; |
727 |
char eos; |
728 |
int skip; |
729 |
|
730 |
// parse the nonstandard "[alphapercent]" prefix |
731 |
if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip)) |
732 |
{ |
733 |
c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a); |
734 |
name += skip; |
735 |
} |
736 |
else |
737 |
c.a = rgba::MAX_CC; |
738 |
|
739 |
// parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format |
740 |
if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos)) |
741 |
{ |
742 |
XColor xc, xc_exact; |
743 |
|
744 |
if (XParseColor (screen->dpy, screen->cmap, name, &xc)) |
745 |
{ |
746 |
c.r = xc.red; |
747 |
c.g = xc.green; |
748 |
c.b = xc.blue; |
749 |
} |
750 |
else |
751 |
{ |
752 |
c.r = 0xffff; |
753 |
c.g = 0x6969; |
754 |
c.b = 0xb4b4; |
755 |
|
756 |
rxvt_warn ("unable to parse color '%s', using pink instead.\n", name); |
757 |
} |
758 |
} |
759 |
|
760 |
return set (screen, c); |
761 |
} |
762 |
|
763 |
bool |
764 |
rxvt_color::set (rxvt_screen *screen, const rgba &color) |
765 |
{ |
766 |
bool got = alloc (screen, color); |
767 |
|
768 |
#if !ENABLE_MINIMAL |
769 |
int cmap_size = screen->visual->map_entries; |
770 |
|
771 |
if (!got |
772 |
&& screen->visual->c_class == PseudoColor |
773 |
&& cmap_size < 4096) |
774 |
{ |
775 |
XColor *colors = new XColor [screen->visual->map_entries]; |
776 |
|
777 |
for (int i = 0; i < cmap_size; i++) |
778 |
colors [i].pixel = i; |
779 |
|
780 |
// many kilobytes transfer per colour, but pseudocolor isn't worth |
781 |
// many extra optimisations. |
782 |
XQueryColors (screen->dpy, screen->cmap, colors, cmap_size); |
783 |
|
784 |
int diff = 0x7fffffffUL; |
785 |
XColor *best = colors; |
786 |
|
787 |
for (int i = 0; i < cmap_size; i++) |
788 |
{ |
789 |
int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2)) |
790 |
+ (squared_diff<int> (color.g >> 2, colors [i].green >> 2)) |
791 |
+ (squared_diff<int> (color.b >> 2, colors [i].blue >> 2)); |
792 |
|
793 |
if (d < diff) |
794 |
{ |
795 |
diff = d; |
796 |
best = colors + i; |
797 |
} |
798 |
} |
799 |
|
800 |
//rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n", |
801 |
// color.r, color.g, color.b, best->red, best->green, best->blue, diff); |
802 |
|
803 |
got = alloc (screen, rgba (best->red, best->green, best->blue)); |
804 |
|
805 |
delete colors; |
806 |
} |
807 |
#endif |
808 |
|
809 |
return got; |
810 |
} |
811 |
|
812 |
void |
813 |
rxvt_color::get (rgba &color) |
814 |
{ |
815 |
#if XFT |
816 |
color.r = c.color.red; |
817 |
color.g = c.color.green; |
818 |
color.b = c.color.blue; |
819 |
color.a = c.color.alpha; |
820 |
#else |
821 |
color.r = c.red; |
822 |
color.g = c.green; |
823 |
color.b = c.blue; |
824 |
color.a = rgba::MAX_CC; |
825 |
#endif |
826 |
} |
827 |
|
828 |
void |
829 |
rxvt_color::get (XColor &color) |
830 |
{ |
831 |
rgba c; |
832 |
get (c); |
833 |
|
834 |
color.red = c.r; |
835 |
color.green = c.g; |
836 |
color.blue = c.b; |
837 |
color.pixel = (Pixel)*this; |
838 |
} |
839 |
|
840 |
void |
841 |
rxvt_color::free (rxvt_screen *screen) |
842 |
{ |
843 |
#if XFT |
844 |
XftColorFree (screen->dpy, screen->visual, screen->cmap, &c); |
845 |
#else |
846 |
XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes); |
847 |
#endif |
848 |
} |
849 |
|
850 |
void |
851 |
rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to) |
852 |
{ |
853 |
rgba c; |
854 |
get (c); |
855 |
|
856 |
result.set ( |
857 |
screen, |
858 |
rgba ( |
859 |
lerp (c.r, to.r, percent), |
860 |
lerp (c.g, to.g, percent), |
861 |
lerp (c.b, to.b, percent), |
862 |
lerp (c.a, to.a, percent) |
863 |
) |
864 |
); |
865 |
} |
866 |
|