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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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static 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); |
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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)) |
113 |
{ |
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++(*i)->referenced; |
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(*i)->ref_next (); |
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return *i; |
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} |
118 |
} |
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|
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T *obj = new T (id); |
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|
122 |
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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if (!scratch_area || w > scratch_w || h > scratch_h) |
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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); |
244 |
} |
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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; |
255 |
dpy = disp->dpy; |
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|
257 |
Screen *screen = ScreenOfDisplay (dpy, disp->screen); |
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|
259 |
depth = DefaultDepthOfScreen (screen); |
260 |
visual = DefaultVisualOfScreen (screen); |
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cmap = DefaultColormapOfScreen (screen); |
262 |
} |
263 |
|
264 |
void |
265 |
rxvt_screen::select_visual (int bitdepth) |
266 |
{ |
267 |
#if XFT |
268 |
XVisualInfo vinfo; |
269 |
|
270 |
if (XMatchVisualInfo (dpy, display->screen, bitdepth, TrueColor, &vinfo)) |
271 |
{ |
272 |
depth = bitdepth; |
273 |
visual = vinfo.visual; |
274 |
cmap = XCreateColormap (dpy, display->root, visual, AllocNone); |
275 |
} |
276 |
#endif |
277 |
} |
278 |
|
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void |
280 |
rxvt_screen::clear () |
281 |
{ |
282 |
#if XFT |
283 |
if (scratch_area) |
284 |
{ |
285 |
XFreePixmap (dpy, scratch_area->drawable); |
286 |
delete scratch_area; |
287 |
} |
288 |
#endif |
289 |
|
290 |
if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (dpy, display->screen))) |
291 |
XFreeColormap (dpy, cmap); |
292 |
} |
293 |
|
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///////////////////////////////////////////////////////////////////////////// |
295 |
|
296 |
rxvt_display::rxvt_display (const char *id) |
297 |
: refcounted (id) |
298 |
, selection_owner (0) |
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, clipboard_owner (0) |
300 |
{ |
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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); |
303 |
} |
304 |
|
305 |
XrmDatabase |
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rxvt_display::get_resources (bool refresh) |
307 |
{ |
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char *homedir = getenv ("HOME"); |
309 |
char fname[1024]; |
310 |
|
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/* |
312 |
* get resources using the X library function |
313 |
*/ |
314 |
char *displayResource, *xe; |
315 |
XrmDatabase rdb1, database = 0; |
316 |
|
317 |
#if !XLIB_ILLEGAL_ACCESS |
318 |
/* work around a bug in XrmSetDatabase where it frees the db, see ref_next */ |
319 |
database = XrmGetStringDatabase (""); |
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#endif |
321 |
|
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// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20 |
323 |
// as opposed to "standard practise", we always read in ~/.Xdefaults |
324 |
|
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// 6. System wide per application default file. |
326 |
|
327 |
/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */ |
328 |
if ((xe = getenv ("XAPPLRESDIR"))) |
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{ |
330 |
snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS); |
331 |
|
332 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
333 |
XrmMergeDatabases (rdb1, &database); |
334 |
} |
335 |
|
336 |
// 5. User's per application default file. |
337 |
// none |
338 |
|
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// 4. User's defaults file. |
340 |
if (homedir) |
341 |
{ |
342 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir); |
343 |
|
344 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
345 |
XrmMergeDatabases (rdb1, &database); |
346 |
} |
347 |
|
348 |
/* Get any Xserver defaults */ |
349 |
if (refresh) |
350 |
{ |
351 |
// fucking xlib keeps a copy of the rm string |
352 |
Atom actual_type; |
353 |
int actual_format; |
354 |
unsigned long nitems, nremaining; |
355 |
char *val = 0; |
356 |
|
357 |
#if XLIB_ILLEGAL_ACCESS |
358 |
if (dpy->xdefaults) |
359 |
XFree (dpy->xdefaults); |
360 |
#endif |
361 |
|
362 |
if (XGetWindowProperty (dpy, RootWindow (dpy, 0), XA_RESOURCE_MANAGER, |
363 |
0L, 100000000L, False, |
364 |
XA_STRING, &actual_type, &actual_format, |
365 |
&nitems, &nremaining, |
366 |
(unsigned char **)&val) == Success |
367 |
&& actual_type == XA_STRING |
368 |
&& actual_format == 8) |
369 |
displayResource = val; |
370 |
else |
371 |
{ |
372 |
displayResource = 0; |
373 |
|
374 |
if (val) |
375 |
XFree (val); |
376 |
} |
377 |
|
378 |
#if XLIB_ILLEGAL_ACCESS |
379 |
dpy->xdefaults = displayResource; |
380 |
#endif |
381 |
} |
382 |
else |
383 |
displayResource = XResourceManagerString (dpy); |
384 |
|
385 |
if (displayResource) |
386 |
{ |
387 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
388 |
XrmMergeDatabases (rdb1, &database); |
389 |
} |
390 |
|
391 |
#if !XLIB_ILLEGAL_ACCESS |
392 |
if (refresh && displayResource) |
393 |
XFree (displayResource); |
394 |
#endif |
395 |
|
396 |
/* Get screen specific resources */ |
397 |
displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen)); |
398 |
|
399 |
if (displayResource) |
400 |
{ |
401 |
if ((rdb1 = XrmGetStringDatabase (displayResource))) |
402 |
/* Merge with screen-independent resources */ |
403 |
XrmMergeDatabases (rdb1, &database); |
404 |
|
405 |
XFree (displayResource); |
406 |
} |
407 |
|
408 |
// 3. User's per host defaults file |
409 |
/* Add in XENVIRONMENT file */ |
410 |
if ((xe = getenv ("XENVIRONMENT")) |
411 |
&& (rdb1 = XrmGetFileDatabase (xe))) |
412 |
XrmMergeDatabases (rdb1, &database); |
413 |
else if (homedir) |
414 |
{ |
415 |
struct utsname un; |
416 |
|
417 |
if (!uname (&un)) |
418 |
{ |
419 |
snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename); |
420 |
|
421 |
if ((rdb1 = XrmGetFileDatabase (fname))) |
422 |
XrmMergeDatabases (rdb1, &database); |
423 |
} |
424 |
} |
425 |
|
426 |
return database; |
427 |
} |
428 |
|
429 |
bool rxvt_display::ref_init () |
430 |
{ |
431 |
#ifdef LOCAL_X_IS_UNIX |
432 |
if (id[0] == ':') |
433 |
{ |
434 |
if (!(val = rxvt_temp_buf<char> (5 + strlen (id) + 1))) |
435 |
return false; |
436 |
strcpy (val, "unix/"); |
437 |
strcat (val, id); |
438 |
dpy = XOpenDisplay (val); |
439 |
} |
440 |
else |
441 |
#endif |
442 |
dpy = 0; |
443 |
|
444 |
if (!dpy) |
445 |
dpy = XOpenDisplay (id); |
446 |
|
447 |
if (!dpy) |
448 |
return false; |
449 |
|
450 |
screen = DefaultScreen (dpy); |
451 |
root = DefaultRootWindow (dpy); |
452 |
|
453 |
assert (ARRAY_LENGTH(xa_names) == NUM_XA); |
454 |
XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa); |
455 |
|
456 |
XrmSetDatabase (dpy, get_resources (false)); |
457 |
|
458 |
#ifdef POINTER_BLANK |
459 |
XColor blackcolour; |
460 |
blackcolour.red = 0; |
461 |
blackcolour.green = 0; |
462 |
blackcolour.blue = 0; |
463 |
Font f = XLoadFont (dpy, "fixed"); |
464 |
blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ', |
465 |
&blackcolour, &blackcolour); |
466 |
XUnloadFont (dpy, f); |
467 |
#endif |
468 |
|
469 |
int fd = XConnectionNumber (dpy); |
470 |
|
471 |
// try to detect whether we have a local connection. |
472 |
// assume unix domain socket == local, everything else not |
473 |
// TODO: might want to check for inet/127.0.0.1 |
474 |
is_local = 0; |
475 |
sockaddr_un sa; |
476 |
socklen_t sl = sizeof (sa); |
477 |
|
478 |
if (!getsockname (fd, (sockaddr *)&sa, &sl)) |
479 |
is_local = sa.sun_family == AF_UNIX; |
480 |
|
481 |
flush_ev.start (); |
482 |
x_ev.start (fd, ev::READ); |
483 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
484 |
|
485 |
XSelectInput (dpy, root, PropertyChangeMask); |
486 |
|
487 |
flush (); |
488 |
|
489 |
return true; |
490 |
} |
491 |
|
492 |
void |
493 |
rxvt_display::ref_next () |
494 |
{ |
495 |
// TODO: somehow check whether the database files/resources changed |
496 |
// before affording re-loading/parsing |
497 |
XrmDestroyDatabase (XrmGetDatabase (dpy)); |
498 |
#if XLIB_ILLEGAL_ACCESS |
499 |
/* work around a bug in XrmSetDatabase where it frees the db */ |
500 |
dpy->db = 0; |
501 |
#endif |
502 |
XrmSetDatabase (dpy, get_resources (true)); |
503 |
} |
504 |
|
505 |
rxvt_display::~rxvt_display () |
506 |
{ |
507 |
if (!dpy) |
508 |
return; |
509 |
|
510 |
#ifdef POINTER_BLANK |
511 |
XFreeCursor (dpy, blank_cursor); |
512 |
#endif |
513 |
x_ev.stop (); |
514 |
flush_ev.stop (); |
515 |
#ifdef USE_XIM |
516 |
xims.clear (); |
517 |
#endif |
518 |
XrmDestroyDatabase (XrmGetDatabase (dpy)); |
519 |
XCloseDisplay (dpy); |
520 |
} |
521 |
|
522 |
#ifdef USE_XIM |
523 |
void rxvt_display::im_change_cb () |
524 |
{ |
525 |
for (im_watcher **i = imw.begin (); i != imw.end (); ++i) |
526 |
(*i)->call (); |
527 |
} |
528 |
|
529 |
void rxvt_display::im_change_check () |
530 |
{ |
531 |
// try to only call im_change_cb when a new input method |
532 |
// registers, as xlib crashes due to a race otherwise. |
533 |
Atom actual_type, *atoms; |
534 |
int actual_format; |
535 |
unsigned long nitems, bytes_after; |
536 |
|
537 |
if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L, |
538 |
False, XA_ATOM, &actual_type, &actual_format, |
539 |
&nitems, &bytes_after, (unsigned char **)&atoms) |
540 |
!= Success) |
541 |
return; |
542 |
|
543 |
if (actual_type == XA_ATOM && actual_format == 32) |
544 |
for (int i = 0; i < nitems; i++) |
545 |
if (XGetSelectionOwner (dpy, atoms[i])) |
546 |
{ |
547 |
im_change_cb (); |
548 |
break; |
549 |
} |
550 |
|
551 |
XFree (atoms); |
552 |
} |
553 |
#endif |
554 |
|
555 |
void rxvt_display::x_cb (ev::io &w, int revents) |
556 |
{ |
557 |
flush_ev.start (); |
558 |
} |
559 |
|
560 |
void rxvt_display::flush_cb (ev::prepare &w, int revents) |
561 |
{ |
562 |
while (XEventsQueued (dpy, QueuedAfterFlush)) |
563 |
do |
564 |
{ |
565 |
XEvent xev; |
566 |
XNextEvent (dpy, &xev); |
567 |
|
568 |
#ifdef USE_XIM |
569 |
if (!XFilterEvent (&xev, None)) |
570 |
{ |
571 |
if (xev.type == PropertyNotify |
572 |
&& xev.xany.window == root |
573 |
&& xev.xproperty.atom == xa[XA_XIM_SERVERS]) |
574 |
im_change_check (); |
575 |
#endif |
576 |
if (xev.type == MappingNotify) |
577 |
XRefreshKeyboardMapping (&xev.xmapping); |
578 |
|
579 |
for (int i = xw.size (); i--; ) |
580 |
{ |
581 |
if (!xw[i]) |
582 |
xw.erase_unordered (i); |
583 |
else if (xw[i]->window == xev.xany.window) |
584 |
xw[i]->call (xev); |
585 |
} |
586 |
#ifdef USE_XIM |
587 |
} |
588 |
#endif |
589 |
} |
590 |
while (XEventsQueued (dpy, QueuedAlready)); |
591 |
|
592 |
w.stop (); |
593 |
} |
594 |
|
595 |
void rxvt_display::reg (xevent_watcher *w) |
596 |
{ |
597 |
if (!w->active) |
598 |
{ |
599 |
xw.push_back (w); |
600 |
w->active = xw.size (); |
601 |
} |
602 |
} |
603 |
|
604 |
void rxvt_display::unreg (xevent_watcher *w) |
605 |
{ |
606 |
if (w->active) |
607 |
{ |
608 |
xw[w->active - 1] = 0; |
609 |
w->active = 0; |
610 |
} |
611 |
} |
612 |
|
613 |
void rxvt_display::set_selection_owner (rxvt_term *owner, bool clipboard) |
614 |
{ |
615 |
rxvt_term * &cur_owner = !clipboard ? selection_owner : clipboard_owner; |
616 |
|
617 |
if (cur_owner && cur_owner != owner) |
618 |
{ |
619 |
rxvt_term *term = cur_owner; |
620 |
term->selection_clear (clipboard); |
621 |
term->flush (); |
622 |
} |
623 |
|
624 |
cur_owner = owner; |
625 |
} |
626 |
|
627 |
#ifdef USE_XIM |
628 |
|
629 |
void rxvt_display::reg (im_watcher *w) |
630 |
{ |
631 |
imw.push_back (w); |
632 |
} |
633 |
|
634 |
void rxvt_display::unreg (im_watcher *w) |
635 |
{ |
636 |
imw.erase (find (imw.begin (), imw.end (), w)); |
637 |
} |
638 |
|
639 |
rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers) |
640 |
{ |
641 |
char *id; |
642 |
int l, m; |
643 |
|
644 |
l = strlen (locale); |
645 |
m = strlen (modifiers); |
646 |
|
647 |
if (!(id = rxvt_temp_buf<char> (l + m + 2))) |
648 |
return 0; |
649 |
|
650 |
memcpy (id, locale, l); id[l] = '\n'; |
651 |
memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0; |
652 |
|
653 |
rxvt_xim *xim = xims.get (id); |
654 |
|
655 |
return xim; |
656 |
} |
657 |
|
658 |
void rxvt_display::put_xim (rxvt_xim *xim) |
659 |
{ |
660 |
# if XLIB_IS_RACEFREE |
661 |
xims.put (xim); |
662 |
# endif |
663 |
} |
664 |
|
665 |
#endif |
666 |
|
667 |
Atom rxvt_display::atom (const char *name) |
668 |
{ |
669 |
return XInternAtom (dpy, name, False); |
670 |
} |
671 |
|
672 |
///////////////////////////////////////////////////////////////////////////// |
673 |
|
674 |
template class refcache<rxvt_display>; |
675 |
refcache<rxvt_display> displays; |
676 |
|
677 |
///////////////////////////////////////////////////////////////////////////// |
678 |
// |
679 |
|
680 |
static unsigned int |
681 |
insert_component (unsigned int value, unsigned int mask, unsigned int shift) |
682 |
{ |
683 |
return (value * (mask + 1) >> 16) << shift; |
684 |
} |
685 |
|
686 |
bool |
687 |
rxvt_color::alloc (rxvt_screen *screen, const rgba &color) |
688 |
{ |
689 |
//TODO: only supports 24 bit |
690 |
int alpha = color.a >= 0xff00 ? 0xffff : color.a; |
691 |
|
692 |
#if XFT |
693 |
XRenderPictFormat *format; |
694 |
|
695 |
// FUCKING Xft gets it wrong, of course, so work around it. |
696 |
// Transparency users should eat shit and die, and then |
697 |
// XRenderQueryPictIndexValues themselves plenty. |
698 |
if ((screen->visual->c_class == TrueColor) |
699 |
&& (format = XRenderFindVisualFormat (screen->dpy, screen->visual))) |
700 |
{ |
701 |
// the fun lies in doing everything manually... |
702 |
c.color.red = color.r; |
703 |
c.color.green = color.g; |
704 |
c.color.blue = color.b; |
705 |
c.color.alpha = alpha; |
706 |
|
707 |
c.pixel = insert_component (color.r, format->direct.redMask , format->direct.red ) |
708 |
| insert_component (color.g, format->direct.greenMask, format->direct.green) |
709 |
| insert_component (color.b, format->direct.blueMask , format->direct.blue ) |
710 |
| insert_component (alpha , format->direct.alphaMask, format->direct.alpha); |
711 |
|
712 |
return true; |
713 |
} |
714 |
else |
715 |
{ |
716 |
XRenderColor d; |
717 |
|
718 |
d.red = color.r; |
719 |
d.green = color.g; |
720 |
d.blue = color.b; |
721 |
d.alpha = alpha; |
722 |
|
723 |
return XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c); |
724 |
} |
725 |
#else |
726 |
c.red = color.r; |
727 |
c.green = color.g; |
728 |
c.blue = color.b; |
729 |
|
730 |
if (screen->visual->c_class == TrueColor) |
731 |
{ |
732 |
c.pixel = (color.r >> (16 - rxvt_popcount (screen->visual->red_mask )) << rxvt_ctz (screen->visual->red_mask )) |
733 |
| (color.g >> (16 - rxvt_popcount (screen->visual->green_mask)) << rxvt_ctz (screen->visual->green_mask)) |
734 |
| (color.b >> (16 - rxvt_popcount (screen->visual->blue_mask )) << rxvt_ctz (screen->visual->blue_mask )); |
735 |
|
736 |
return true; |
737 |
} |
738 |
else if (XAllocColor (screen->dpy, screen->cmap, &c)) |
739 |
return true; |
740 |
else |
741 |
c.pixel = (color.r + color.g + color.b) > 128*3 |
742 |
? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy)) |
743 |
: BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy)); |
744 |
#endif |
745 |
|
746 |
return false; |
747 |
} |
748 |
|
749 |
bool |
750 |
rxvt_color::set (rxvt_screen *screen, const char *name) |
751 |
{ |
752 |
rgba c; |
753 |
char eos; |
754 |
int skip; |
755 |
|
756 |
c.a = rgba::MAX_CC; |
757 |
|
758 |
// parse the nonstandard "[alphapercent]" prefix |
759 |
if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip)) |
760 |
{ |
761 |
c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a); |
762 |
name += skip; |
763 |
} |
764 |
|
765 |
// parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format |
766 |
if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos)) |
767 |
{ |
768 |
XColor xc; |
769 |
|
770 |
if (XParseColor (screen->dpy, screen->cmap, name, &xc)) |
771 |
{ |
772 |
c.r = xc.red; |
773 |
c.g = xc.green; |
774 |
c.b = xc.blue; |
775 |
} |
776 |
else |
777 |
{ |
778 |
c.r = 0xffff; |
779 |
c.g = 0x6969; |
780 |
c.b = 0xb4b4; |
781 |
|
782 |
rxvt_warn ("unable to parse color '%s', using pink instead.\n", name); |
783 |
} |
784 |
} |
785 |
|
786 |
return set (screen, c); |
787 |
} |
788 |
|
789 |
bool |
790 |
rxvt_color::set (rxvt_screen *screen, const rgba &color) |
791 |
{ |
792 |
bool got = alloc (screen, color); |
793 |
|
794 |
#if !ENABLE_MINIMAL |
795 |
int cmap_size = screen->visual->map_entries; |
796 |
|
797 |
if (!got |
798 |
&& screen->visual->c_class == PseudoColor |
799 |
&& cmap_size < 4096) |
800 |
{ |
801 |
XColor *colors = new XColor [screen->visual->map_entries]; |
802 |
|
803 |
for (int i = 0; i < cmap_size; i++) |
804 |
colors [i].pixel = i; |
805 |
|
806 |
// many kilobytes transfer per colour, but pseudocolor isn't worth |
807 |
// many extra optimisations. |
808 |
XQueryColors (screen->dpy, screen->cmap, colors, cmap_size); |
809 |
|
810 |
int diff = 0x7fffffffUL; |
811 |
XColor *best = colors; |
812 |
|
813 |
for (int i = 0; i < cmap_size; i++) |
814 |
{ |
815 |
int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2)) |
816 |
+ (squared_diff<int> (color.g >> 2, colors [i].green >> 2)) |
817 |
+ (squared_diff<int> (color.b >> 2, colors [i].blue >> 2)); |
818 |
|
819 |
if (d < diff) |
820 |
{ |
821 |
diff = d; |
822 |
best = colors + i; |
823 |
} |
824 |
} |
825 |
|
826 |
//rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n", |
827 |
// color.r, color.g, color.b, best->red, best->green, best->blue, diff); |
828 |
|
829 |
got = alloc (screen, rgba (best->red, best->green, best->blue)); |
830 |
|
831 |
delete [] colors; |
832 |
} |
833 |
#endif |
834 |
|
835 |
return got; |
836 |
} |
837 |
|
838 |
void |
839 |
rxvt_color::get (rgba &color) |
840 |
{ |
841 |
#if XFT |
842 |
color.r = c.color.red; |
843 |
color.g = c.color.green; |
844 |
color.b = c.color.blue; |
845 |
color.a = c.color.alpha; |
846 |
#else |
847 |
color.r = c.red; |
848 |
color.g = c.green; |
849 |
color.b = c.blue; |
850 |
color.a = rgba::MAX_CC; |
851 |
#endif |
852 |
} |
853 |
|
854 |
void |
855 |
rxvt_color::get (XColor &color) |
856 |
{ |
857 |
rgba c; |
858 |
get (c); |
859 |
|
860 |
color.red = c.r; |
861 |
color.green = c.g; |
862 |
color.blue = c.b; |
863 |
color.pixel = (Pixel)*this; |
864 |
} |
865 |
|
866 |
void |
867 |
rxvt_color::free (rxvt_screen *screen) |
868 |
{ |
869 |
if (screen->visual->c_class == TrueColor) |
870 |
return; // nothing to do |
871 |
|
872 |
#if XFT |
873 |
XftColorFree (screen->dpy, screen->visual, screen->cmap, &c); |
874 |
#else |
875 |
XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes); |
876 |
#endif |
877 |
} |
878 |
|
879 |
void |
880 |
rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to) |
881 |
{ |
882 |
rgba c; |
883 |
get (c); |
884 |
|
885 |
result.set ( |
886 |
screen, |
887 |
rgba ( |
888 |
lerp (c.r, to.r, percent), |
889 |
lerp (c.g, to.g, percent), |
890 |
lerp (c.b, to.b, percent), |
891 |
lerp (c.a, to.a, percent) |
892 |
) |
893 |
); |
894 |
} |
895 |
|