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| -rw-r--r-- | src/rxvttoolkit.C | 1279 |
1 files changed, 1279 insertions, 0 deletions
diff --git a/src/rxvttoolkit.C b/src/rxvttoolkit.C new file mode 100644 index 0000000..d92c5b9 --- /dev/null +++ b/src/rxvttoolkit.C @@ -0,0 +1,1279 @@ +/*----------------------------------------------------------------------* + * File: rxvttoolkit.C + *----------------------------------------------------------------------* + * + * All portions of code are copyright by their respective author/s. + * Copyright (c) 2003-2011 Marc Lehmann <schmorp@schmorp.de> + * Copyright (c) 2011 Emanuele Giaquinta <e.giaquinta@glauco.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + *----------------------------------------------------------------------*/ + +#include "../config.h" +#include <rxvt.h> +#include <rxvttoolkit.h> + +#include <stdlib.h> + +#include <unistd.h> +#include <fcntl.h> + +#include <sys/utsname.h> +#include <sys/socket.h> +#include <sys/un.h> + +#if XFT +# include <X11/extensions/Xrender.h> +#endif + +static const char *const xa_names[] = +{ + "TEXT", + "COMPOUND_TEXT", + "UTF8_STRING", + "MULTIPLE", + "TARGETS", + "TIMESTAMP", + "VT_SELECTION", + "INCR", + "WM_PROTOCOLS", + "WM_DELETE_WINDOW", + "CLIPBOARD", + "AVERAGE_WIDTH", + "WEIGHT_NAME", + "SLANT", + "CHARSET_REGISTRY", + "CHARSET_ENCODING", +#if ENABLE_FRILLS + "_MOTIF_WM_HINTS", +#endif +#if ENABLE_EWMH + "_NET_WM_PID", + "_NET_WM_NAME", + "_NET_WM_ICON_NAME", + "_NET_WM_PING", + "_NET_WM_ICON", +#endif +#if USE_XIM + "WM_LOCALE_NAME", + "XIM_SERVERS", +#endif +#if HAVE_IMG || ENABLE_PERL + "_XROOTPMAP_ID", + "ESETROOT_PMAP_ID", +#endif +#if ENABLE_XEMBED + "_XEMBED", + "_XEMBED_INFO", +#endif +#if !ENABLE_MINIMAL + "SCREEN_RESOURCES", + "XDCCC_LINEAR_RGB_CORRECTION", + "XDCCC_LINEAR_RGB_MATRICES", + "WM_COLORMAP_WINDOWS", + "WM_STATE", + "cursor", +# if USE_XIM + "TRANSPORT", + "LOCALES", + "_XIM_PROTOCOL", + "_XIM_XCONNECT", + "_XIM_MOREDATA", +# endif +#endif +}; + +///////////////////////////////////////////////////////////////////////////// + +refcounted::refcounted (const char *id) +{ + this->id = strdup (id); +} + +refcounted::~refcounted () +{ + free (id); +} + +template<class T> +T *refcache<T>::get (const char *id) +{ + for (T **i = this->begin (); i < this->end (); ++i) + { + if (!strcmp (id, (*i)->id)) + { + ++(*i)->referenced; + (*i)->ref_next (); + return *i; + } + } + + T *obj = new T (id); + + if (obj && obj->ref_init ()) + { + obj->referenced = 1; + this->push_back (obj); + return obj; + } + else + { + delete obj; + return 0; + } +} + +template<class T> +void refcache<T>::put (T *obj) +{ + if (!obj) + return; + + if (!--obj->referenced) + { + this->erase (find (this->begin (), this->end (), obj)); + delete obj; + } +} + +template<class T> +void refcache<T>::clear () +{ + while (this->size ()) + put (*this->begin ()); +} + +///////////////////////////////////////////////////////////////////////////// + +#if USE_XIM + +static void +#if XIMCB_PROTO_BROKEN +im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3) +#else +im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3) +#endif +{ + rxvt_xim *xim = (rxvt_xim *)client_data; + rxvt_display *display = xim->display; + + xim->xim = 0; + + display->xims.erase (find (display->xims.begin (), display->xims.end (), xim)); + display->im_change_cb (); +} + +bool +rxvt_xim::ref_init () +{ + display = GET_R->display; //HACK: TODO + + xim = XOpenIM (display->dpy, 0, 0, 0); + + if (!xim) + return false; + + XIMCallback ximcallback; + ximcallback.client_data = (XPointer)this; + ximcallback.callback = im_destroy_cb; + + XSetIMValues (xim, XNDestroyCallback, &ximcallback, (char *)0); + + return true; +} + +rxvt_xim::~rxvt_xim () +{ + if (xim) + XCloseIM (xim); +} + +#endif + +///////////////////////////////////////////////////////////////////////////// + +#if XFT +rxvt_drawable::~rxvt_drawable () +{ + if (xftdrawable) + XftDrawDestroy (xftdrawable); +} + +rxvt_drawable::operator XftDraw *() +{ + if (!xftdrawable) + xftdrawable = XftDrawCreate (screen->dpy, drawable, screen->visual, screen->cmap); + + return xftdrawable; +} +#endif + +///////////////////////////////////////////////////////////////////////////// + +#if XFT + +// not strictly necessary as it is only used with superclass of zero_initialised +rxvt_screen::rxvt_screen () +: scratch_area (0) +{ +} + +rxvt_drawable &rxvt_screen::scratch_drawable (int w, int h) +{ + if (!scratch_area || w > scratch_w || h > scratch_h) + { + if (scratch_area) + { + XFreePixmap (dpy, scratch_area->drawable); + delete scratch_area; + } + + Pixmap pm = XCreatePixmap (dpy, RootWindowOfScreen (ScreenOfDisplay (dpy, display->screen)), + scratch_w = w, scratch_h = h, depth); + + scratch_area = new rxvt_drawable (this, pm); + } + + return *scratch_area; +} + +#endif + +void +rxvt_screen::set (rxvt_display *disp) +{ + display = disp; + dpy = disp->dpy; + + Screen *screen = ScreenOfDisplay (dpy, disp->screen); + + depth = DefaultDepthOfScreen (screen); + visual = DefaultVisualOfScreen (screen); + cmap = DefaultColormapOfScreen (screen); +} + +#if ENABLE_FRILLS + +void +rxvt_screen::select_visual (int id) +{ + XVisualInfo vinfo; + vinfo.visualid = id; + int n; + + if (XVisualInfo *vi = XGetVisualInfo (dpy, VisualIDMask, &vinfo, &n)) + { + depth = vi->depth; + visual = vi->visual; + + XFree (vi); + + cmap = XCreateColormap (dpy, display->root, visual, AllocNone); + } + else + rxvt_warn ("no visual found for requested id 0x%02x, using default visual.\n", id); +} + +void +rxvt_screen::select_depth (int bitdepth) +{ + XVisualInfo vinfo; + + if (XMatchVisualInfo (dpy, display->screen, bitdepth, TrueColor, &vinfo)) + select_visual (vinfo.visualid); + else + rxvt_warn ("no visual found for requested depth %d, using default visual.\n", bitdepth); +} + +#endif + +void +rxvt_screen::clear () +{ +#if XFT + if (scratch_area) + { + XFreePixmap (dpy, scratch_area->drawable); + delete scratch_area; + } +#endif + + if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (dpy, display->screen))) + XFreeColormap (dpy, cmap); +} + +///////////////////////////////////////////////////////////////////////////// + +rxvt_display::rxvt_display (const char *id) +: refcounted (id) +, selection_owner (0) +, clipboard_owner (0) +{ + x_ev .set<rxvt_display, &rxvt_display::x_cb > (this); + flush_ev.set<rxvt_display, &rxvt_display::flush_cb> (this); +} + +XrmDatabase +rxvt_display::get_resources (bool refresh) +{ + char *homedir = getenv ("HOME"); + char fname[1024]; + + /* + * get resources using the X library function + */ + char *displayResource, *xe; + XrmDatabase rdb1, database = 0; + +#if !XLIB_ILLEGAL_ACCESS + /* work around a bug in XrmSetDatabase where it frees the db, see ref_next */ + database = XrmGetStringDatabase (""); +#endif + + // for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20 + // as opposed to "standard practise", we always read in ~/.Xdefaults + + // 6. System wide per application default file. + + /* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */ + if ((xe = getenv ("XAPPLRESDIR"))) + { + snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS); + + if ((rdb1 = XrmGetFileDatabase (fname))) + XrmMergeDatabases (rdb1, &database); + } + + // 5. User's per application default file. + // none + + // 4. User's defaults file. + if (homedir) + { + snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir); + + if ((rdb1 = XrmGetFileDatabase (fname))) + XrmMergeDatabases (rdb1, &database); + } + + /* Get any Xserver defaults */ + if (refresh) + { + // fucking xlib keeps a copy of the rm string + Atom actual_type; + int actual_format; + unsigned long nitems, nremaining; + char *val = 0; + +#if XLIB_ILLEGAL_ACCESS + if (dpy->xdefaults) + XFree (dpy->xdefaults); +#endif + + if (XGetWindowProperty (dpy, RootWindow (dpy, 0), XA_RESOURCE_MANAGER, + 0L, 100000000L, False, + XA_STRING, &actual_type, &actual_format, + &nitems, &nremaining, + (unsigned char **)&val) == Success + && actual_type == XA_STRING + && actual_format == 8) + displayResource = val; + else + { + displayResource = 0; + + if (val) + XFree (val); + } + +#if XLIB_ILLEGAL_ACCESS + dpy->xdefaults = displayResource; +#endif + } + else + displayResource = XResourceManagerString (dpy); + + if (displayResource) + { + if ((rdb1 = XrmGetStringDatabase (displayResource))) + XrmMergeDatabases (rdb1, &database); + } + +#if !XLIB_ILLEGAL_ACCESS + if (refresh && displayResource) + XFree (displayResource); +#endif + + /* Get screen specific resources */ + displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen)); + + if (displayResource) + { + if ((rdb1 = XrmGetStringDatabase (displayResource))) + /* Merge with screen-independent resources */ + XrmMergeDatabases (rdb1, &database); + + XFree (displayResource); + } + + // 3. User's per host defaults file + /* Add in XENVIRONMENT file */ + if ((xe = getenv ("XENVIRONMENT")) + && (rdb1 = XrmGetFileDatabase (xe))) + XrmMergeDatabases (rdb1, &database); + else if (homedir) + { + struct utsname un; + + if (!uname (&un)) + { + snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename); + + if ((rdb1 = XrmGetFileDatabase (fname))) + XrmMergeDatabases (rdb1, &database); + } + } + + return database; +} + +bool rxvt_display::ref_init () +{ +#ifdef LOCAL_X_IS_UNIX + if (id[0] == ':') + { + char *val = rxvt_temp_buf<char> (5 + strlen (id) + 1); + + strcpy (val, "unix/"); + strcat (val, id); + + dpy = XOpenDisplay (val); + } + else +#endif + dpy = 0; + + if (!dpy) + dpy = XOpenDisplay (id); + + if (!dpy) + return false; + + screen = DefaultScreen (dpy); + root = DefaultRootWindow (dpy); + + assert (ecb_array_length (xa_names) == NUM_XA); + XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa); + + XrmSetDatabase (dpy, get_resources (false)); + +#ifdef POINTER_BLANK + XColor blackcolour; + blackcolour.red = 0; + blackcolour.green = 0; + blackcolour.blue = 0; + Font f = XLoadFont (dpy, "fixed"); + blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ', + &blackcolour, &blackcolour); + XUnloadFont (dpy, f); +#endif + + flags = 0; +#if XRENDER + int major, minor; + if (XRenderQueryVersion (dpy, &major, &minor)) + if (major > 0 || (major == 0 && minor >= 11)) + { + flags |= DISPLAY_HAS_RENDER; + + if (XFilters *filters = XRenderQueryFilters (dpy, root)) + { + for (int i = 0; i < filters->nfilter; i++) + if (!strcmp (filters->filter [i], FilterConvolution)) + flags |= DISPLAY_HAS_RENDER_CONV; + + XFree (filters); + } + } +#endif + + int fd = XConnectionNumber (dpy); + + // try to detect whether we have a local connection. + // assume unix domain socket == local, everything else not + // TODO: might want to check for inet/127.0.0.1 + is_local = 0; + sockaddr_un sa; + socklen_t sl = sizeof (sa); + + if (!getsockname (fd, (sockaddr *)&sa, &sl)) + is_local = sa.sun_family == AF_UNIX; + + flush_ev.start (); + x_ev.start (fd, ev::READ); + fcntl (fd, F_SETFD, FD_CLOEXEC); + + XSelectInput (dpy, root, PropertyChangeMask); + + flush (); + + return true; +} + +void +rxvt_display::ref_next () +{ + // TODO: somehow check whether the database files/resources changed + // before affording re-loading/parsing + XrmDestroyDatabase (XrmGetDatabase (dpy)); +#if XLIB_ILLEGAL_ACCESS + /* work around a bug in XrmSetDatabase where it frees the db */ + dpy->db = 0; +#endif + XrmSetDatabase (dpy, get_resources (true)); +} + +rxvt_display::~rxvt_display () +{ + if (!dpy) + return; + +#ifdef POINTER_BLANK + XFreeCursor (dpy, blank_cursor); +#endif + x_ev.stop (); + flush_ev.stop (); +#if USE_XIM + xims.clear (); +#endif + XrmDestroyDatabase (XrmGetDatabase (dpy)); + XCloseDisplay (dpy); +} + +#if USE_XIM +void rxvt_display::im_change_cb () +{ + for (im_watcher **i = imw.begin (); i != imw.end (); ++i) + (*i)->call (); +} + +void rxvt_display::im_change_check () +{ + // try to only call im_change_cb when a new input method + // registers, as xlib crashes due to a race otherwise. + Atom actual_type, *atoms; + int actual_format; + unsigned long nitems, bytes_after; + + if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L, + False, XA_ATOM, &actual_type, &actual_format, + &nitems, &bytes_after, (unsigned char **)&atoms) + != Success) + return; + + if (actual_type == XA_ATOM && actual_format == 32) + for (int i = 0; i < nitems; i++) + if (XGetSelectionOwner (dpy, atoms[i])) + { + im_change_cb (); + break; + } + + XFree (atoms); +} +#endif + +void rxvt_display::x_cb (ev::io &w, int revents) +{ + flush_ev.start (); +} + +void rxvt_display::flush_cb (ev::prepare &w, int revents) +{ + while (XEventsQueued (dpy, QueuedAfterFlush)) + do + { + XEvent xev; + XNextEvent (dpy, &xev); + +#if USE_XIM + if (!XFilterEvent (&xev, None)) + { + if (xev.type == PropertyNotify + && xev.xany.window == root + && xev.xproperty.atom == xa[XA_XIM_SERVERS]) + im_change_check (); +#endif + if (xev.type == MappingNotify) + XRefreshKeyboardMapping (&xev.xmapping); + + for (int i = xw.size (); i--; ) + { + if (!xw[i]) + xw.erase_unordered (i); + else if (xw[i]->window == xev.xany.window) + xw[i]->call (xev); + } +#if USE_XIM + } +#endif + } + while (XEventsQueued (dpy, QueuedAlready)); + + w.stop (); +} + +void rxvt_display::reg (xevent_watcher *w) +{ + if (!w->active) + { + xw.push_back (w); + w->active = xw.size (); + } +} + +void rxvt_display::unreg (xevent_watcher *w) +{ + if (w->active) + { + xw[w->active - 1] = 0; + w->active = 0; + } +} + +void rxvt_display::set_selection_owner (rxvt_term *owner, bool clipboard) +{ + rxvt_term * &cur_owner = !clipboard ? selection_owner : clipboard_owner; + + if (cur_owner && cur_owner != owner) + { + rxvt_term *term = cur_owner; + term->selection_clear (clipboard); + term->flush (); + } + + cur_owner = owner; +} + +#if USE_XIM + +void rxvt_display::reg (im_watcher *w) +{ + imw.push_back (w); +} + +void rxvt_display::unreg (im_watcher *w) +{ + imw.erase (find (imw.begin (), imw.end (), w)); +} + +rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers) +{ + char *id; + int l, m; + + l = strlen (locale); + m = strlen (modifiers); + + if (!(id = rxvt_temp_buf<char> (l + m + 2))) + return 0; + + memcpy (id, locale, l); id[l] = '\n'; + memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0; + + rxvt_xim *xim = xims.get (id); + + return xim; +} + +void rxvt_display::put_xim (rxvt_xim *xim) +{ +# if XLIB_IS_RACEFREE + xims.put (xim); +# endif +} + +#endif + +Atom rxvt_display::atom (const char *name) +{ + return XInternAtom (dpy, name, False); +} + +Pixmap +rxvt_display::get_pixmap_property (Atom property) +{ + Pixmap pixmap = None; + + int aformat; + unsigned long nitems, bytes_after; + Atom atype; + unsigned char *prop; + int result = XGetWindowProperty (dpy, root, property, + 0L, 1L, False, XA_PIXMAP, &atype, &aformat, + &nitems, &bytes_after, &prop); + if (result == Success) + { + if (atype == XA_PIXMAP) + pixmap = *(Pixmap *)prop; + XFree (prop); + } + + return pixmap; +} + +///////////////////////////////////////////////////////////////////////////// + +template class refcache<rxvt_display>; +refcache<rxvt_display> displays; + +///////////////////////////////////////////////////////////////////////////// +// + +static unsigned int +insert_component (unsigned int value, unsigned int mask, unsigned int shift) +{ + return (value * (mask + 1) >> 16) << shift; +} + +bool +rxvt_color::alloc (rxvt_screen *screen, const rgba &color) +{ + //TODO: only supports 24 bit + unsigned int alpha = color.a >= 0xff00 ? 0xffff : color.a; + +#if XFT + XRenderPictFormat *format; + + // not needed by XftColorAlloc, but by the other paths (ours + // and fallback), so just set all components here. + c.color.red = color.r; + c.color.green = color.g; + c.color.blue = color.b; + c.color.alpha = alpha; + + // FUCKING Xft gets it wrong, of course, so work around it. + // Transparency users should eat shit and die, and then + // XRenderQueryPictIndexValues themselves plenty. + if ((screen->visual->c_class == TrueColor) + && (format = XRenderFindVisualFormat (screen->dpy, screen->visual))) + { + // the fun lies in doing everything manually... + + // Xft wants premultiplied alpha, but abuses the alpha channel + // as blend factor, and doesn't allow us to set the alpha channel + c.color.red = c.color.red * alpha / 0xffff; + c.color.green = c.color.green * alpha / 0xffff; + c.color.blue = c.color.blue * alpha / 0xffff; + + c.pixel = insert_component (c.color.red , format->direct.redMask , format->direct.red ) + | insert_component (c.color.green, format->direct.greenMask, format->direct.green) + | insert_component (c.color.blue , format->direct.blueMask , format->direct.blue ) + | insert_component (alpha , format->direct.alphaMask, format->direct.alpha); + + return true; + } + else + { + XRenderColor d; + + d.red = color.r; + d.green = color.g; + d.blue = color.b; + d.alpha = alpha; + + // XftColorAlloc always returns 100% transparent pixels(!) + if (XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c)) + return true; + } +#else + c.red = color.r; + c.green = color.g; + c.blue = color.b; + + if (screen->visual->c_class == TrueColor) + { + c.pixel = (color.r >> (16 - ecb_popcount32 (screen->visual->red_mask )) << ecb_ctz32 (screen->visual->red_mask )) + | (color.g >> (16 - ecb_popcount32 (screen->visual->green_mask)) << ecb_ctz32 (screen->visual->green_mask)) + | (color.b >> (16 - ecb_popcount32 (screen->visual->blue_mask )) << ecb_ctz32 (screen->visual->blue_mask )); + + return true; + } + else if (XAllocColor (screen->dpy, screen->cmap, &c)) + return true; +#endif + + c.pixel = (color.r * 2 + color.g * 3 + color.b) >= 0x8000 * 6 + ? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy)) + : BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy)); + + return false; +} + +bool +rxvt_color::set (rxvt_screen *screen, const char *name) +{ + rgba c; + char eos; + int skip = 0; + + c.a = rgba::MAX_CC; + + // parse the nonstandard "[alphapercent]" prefix + if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip)) + { + c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a); + name += skip; + } + + // parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format + if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos)) + { + XColor xc; + + if (XParseColor (screen->dpy, screen->cmap, name, &xc)) + { + c.r = xc.red; + c.g = xc.green; + c.b = xc.blue; + } + else + { + c.r = 0xffff; + c.g = 0x6969; + c.b = 0xb4b4; + + rxvt_warn ("unable to parse color '%s', using pink instead.\n", name); + } + } + + return set (screen, c); +} + +bool +rxvt_color::set (rxvt_screen *screen, const rgba &color) +{ + bool got = alloc (screen, color); + +#if !ENABLE_MINIMAL + int cmap_size = screen->visual->map_entries; + + if (!got + && screen->visual->c_class == PseudoColor + && cmap_size < 4096) + { + XColor *colors = new XColor [screen->visual->map_entries]; + + for (int i = 0; i < cmap_size; i++) + colors [i].pixel = i; + + // many kilobytes transfer per colour, but pseudocolor isn't worth + // many extra optimisations. + XQueryColors (screen->dpy, screen->cmap, colors, cmap_size); + + while (cmap_size) + { + int diff = 0x7fffffffL; + XColor *best = colors; + + for (int i = 0; i < cmap_size; i++) + { + // simple weighted rgb distance sucks, but keeps it simple + int d = abs (color.r - colors [i].red ) * 2 + + abs (color.g - colors [i].green) * 3 + + abs (color.b - colors [i].blue ); + + if (d < diff) + { + diff = d; + best = colors + i; + } + } + + //rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d,%d)\n", + // color.r, color.g, color.b, best->red, best->green, best->blue, diff, best - colors); + + got = alloc (screen, rgba (best->red, best->green, best->blue)); + + if (got) + break; + + *best = colors [--cmap_size]; + } + + delete [] colors; + } +#endif + + return got; +} + +void +rxvt_color::get (rgba &color) const +{ +#if XFT + + color.r = c.color.red; + color.g = c.color.green; + color.b = c.color.blue; + color.a = c.color.alpha; + + if (IN_RANGE_INC (color.a, 0x0001, 0xfffe)) + { + color.r = color.r * 0xffff / color.a; + color.g = color.g * 0xffff / color.a; + color.b = color.b * 0xffff / color.a; + } + +#else + + color.r = c.red; + color.g = c.green; + color.b = c.blue; + color.a = rgba::MAX_CC; + +#endif +} + +void +rxvt_color::get (XColor &color) const +{ + rgba c; + get (c); + + color.red = c.r; + color.green = c.g; + color.blue = c.b; + color.pixel = (Pixel)*this; +} + +void +rxvt_color::free (rxvt_screen *screen) +{ + if (screen->visual->c_class == TrueColor) + return; // nothing to do + +#if XFT + XftColorFree (screen->dpy, screen->visual, screen->cmap, &c); +#else + XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes); +#endif +} + +void +rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to) +{ + rgba c; + get (c); + + result.set ( + screen, + rgba ( + lerp (c.r, to.r, percent), + lerp (c.g, to.g, percent), + lerp (c.b, to.b, percent), + lerp (c.a, to.a, percent) + ) + ); +} + +rxvt_selection::rxvt_selection (rxvt_display *disp, int selnum, Time tm, Window win, Atom prop, rxvt_term *term) +: display (disp), request_time (tm), request_win (win), request_prop (prop), term (term) +{ + assert (selnum >= Sel_Primary && selnum <= Sel_Clipboard); + + timer_ev.set<rxvt_selection, &rxvt_selection::timer_cb> (this); + timer_ev.repeat = 10.; + x_ev.set<rxvt_selection, &rxvt_selection::x_cb> (this); + + incr_buf = 0; + incr_buf_size = incr_buf_fill = 0; + selection_wait = Sel_normal; + selection_type = selnum; + cb_sv = 0; +} + +void +rxvt_selection::stop () +{ + free (incr_buf); + incr_buf = 0; + timer_ev.stop (); + x_ev.stop (display); +} + +rxvt_selection::~rxvt_selection () +{ + stop (); +} + +void +rxvt_selection::run () +{ + int selnum = selection_type; + +#if ENABLE_FRILLS + if (selnum == Sel_Primary && display->selection_owner) + { + /* internal selection */ + char *str = rxvt_wcstombs (display->selection_owner->selection.text, display->selection_owner->selection.len); + finish (str, strlen (str)); + free (str); + return; + } +#endif + +#if X_HAVE_UTF8_STRING + selection_type = Sel_UTF8String; + if (request (display->xa[XA_UTF8_STRING], selnum)) + return; +#else + selection_type = Sel_CompoundText; + if (request (display->xa[XA_COMPOUND_TEXT], selnum)) + return; +#endif + + // fallback to CUT_BUFFER0 if the requested property has no owner + handle_selection (display->root, XA_CUT_BUFFER0, false); +} + +void +rxvt_selection::finish (char *data, unsigned int len) +{ + if (!cb_sv) + { + if (data) + term->paste (data, len); + + term->selection_req = 0; + delete this; + } +#if ENABLE_PERL + else + { + stop (); // we do not really trust perl callbacks + rxvt_perl.selection_finish (this, data, len); + } +#endif +} + +bool +rxvt_selection::request (Atom target, int selnum) +{ + Atom sel; + + selection_type |= selnum; + + if (selnum == Sel_Primary) + sel = XA_PRIMARY; + else if (selnum == Sel_Secondary) + sel = XA_SECONDARY; + else + sel = display->xa[XA_CLIPBOARD]; + + if (XGetSelectionOwner (display->dpy, sel) != None) + { + XConvertSelection (display->dpy, sel, target, request_prop, + request_win, request_time); + x_ev.start (display, request_win); + timer_ev.again (); + return true; + } + + return false; +} + +void +rxvt_selection::handle_selection (Window win, Atom prop, bool delete_prop) +{ + Display *dpy = display->dpy; + char *data = 0; + unsigned int data_len = 0; + unsigned long bytes_after; + XTextProperty ct; + + // check for failed XConvertSelection + if (prop == None) + { + bool error = true; + int selnum = selection_type & Sel_whereMask; + + if (selection_type & Sel_CompoundText) + { + selection_type = 0; + error = !request (XA_STRING, selnum); + } + + if (selection_type & Sel_UTF8String) + { + selection_type = Sel_CompoundText; + error = !request (display->xa[XA_COMPOUND_TEXT], selnum); + } + + if (error) + { + ct.value = 0; + goto bailout; + } + + return; + } + + // length == (2^31 - 1) / 4, as gdk + if (XGetWindowProperty (dpy, win, prop, + 0, 0x1fffffff, + delete_prop, AnyPropertyType, + &ct.encoding, &ct.format, + &ct.nitems, &bytes_after, + &ct.value) != Success) + { + ct.value = 0; + goto bailout; + } + + if (ct.encoding == None) + goto bailout; + + if (ct.value == 0) + goto bailout; + + if (ct.encoding == display->xa[XA_INCR]) + { + // INCR selection, start handshake + if (!delete_prop) + XDeleteProperty (dpy, win, prop); + + selection_wait = Sel_incr; + timer_ev.again (); + + goto bailout; + } + + if (ct.nitems == 0) + { + if (selection_wait == Sel_incr) + { + XFree (ct.value); + + // finally complete, now paste the whole thing + selection_wait = Sel_normal; + ct.value = (unsigned char *)incr_buf; + ct.nitems = incr_buf_fill; + incr_buf = 0; + timer_ev.stop (); + } + else + { + // avoid recursion + if (win != display->root || prop != XA_CUT_BUFFER0) + { + XFree (ct.value); + + // fallback to CUT_BUFFER0 if the requested property + // has an owner but is empty + handle_selection (display->root, XA_CUT_BUFFER0, False); + return; + } + + goto bailout; + } + } + else if (selection_wait == Sel_incr) + { + timer_ev.again (); + + while (incr_buf_fill + ct.nitems > incr_buf_size) + { + incr_buf_size = incr_buf_size ? incr_buf_size * 2 : 128*1024; + incr_buf = (char *)rxvt_realloc (incr_buf, incr_buf_size); + } + + memcpy (incr_buf + incr_buf_fill, ct.value, ct.nitems); + incr_buf_fill += ct.nitems; + + goto bailout; + } + + char **cl; + int cr; + + // we honour the first item only + +#if !ENABLE_MINIMAL + // xlib is horribly broken with respect to UTF8_STRING, and nobody cares to fix it + // so recode it manually + if (ct.encoding == display->xa[XA_UTF8_STRING]) + { + wchar_t *w = rxvt_utf8towcs ((const char *)ct.value, ct.nitems); + data = rxvt_wcstombs (w); + free (w); + } + else +#endif + if (XmbTextPropertyToTextList (dpy, &ct, &cl, &cr) >= 0 + && cl) + { + data = strdup (cl[0]); + XFreeStringList (cl); + } + else + { + // paste raw + data = strdup ((const char *)ct.value); + } + + data_len = strlen (data); + +bailout: + XFree (ct.value); + + if (selection_wait == Sel_normal) + { + finish (data, data_len); + free (data); + } +} + +void +rxvt_selection::timer_cb (ev::timer &w, int revents) +{ + if (selection_wait == Sel_incr) + rxvt_warn ("data loss: timeout on INCR selection paste, ignoring.\n"); + + finish (); +} + +void +rxvt_selection::x_cb (XEvent &xev) +{ + switch (xev.type) + { + case PropertyNotify: + if (selection_wait == Sel_incr + && xev.xproperty.atom == request_prop + && xev.xproperty.state == PropertyNewValue) + handle_selection (xev.xproperty.window, xev.xproperty.atom, true); + break; + + case SelectionNotify: + if (selection_wait == Sel_normal + && xev.xselection.time == request_time) + { + timer_ev.stop (); + handle_selection (xev.xselection.requestor, xev.xselection.property, true); + } + break; + } +} |