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+/*----------------------------------------------------------------------*
+ * File: rxvttoolkit.h - provide toolkit-functionality for rxvt.
+ *----------------------------------------------------------------------*
+ *
+ * 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.
+ *----------------------------------------------------------------------*/
+
+#ifndef RXVT_TOOLKIT_H
+#define RXVT_TOOLKIT_H
+
+#include <X11/Xlib.h>
+
+#if XFT
+# include <X11/Xft/Xft.h>
+#endif
+
+#include "ev_cpp.h"
+
+#include "rxvtutil.h"
+
+#include "callback.h"
+
+// see rxvttoolkit.C:xa_names, which must be kept in sync
+enum {
+ XA_TEXT,
+ XA_COMPOUND_TEXT,
+ XA_UTF8_STRING,
+ XA_MULTIPLE,
+ XA_TARGETS,
+ XA_TIMESTAMP,
+ XA_VT_SELECTION,
+ XA_INCR,
+ XA_WM_PROTOCOLS,
+ XA_WM_DELETE_WINDOW,
+ XA_CLIPBOARD,
+ XA_AVERAGE_WIDTH,
+ XA_WEIGHT_NAME,
+ XA_SLANT,
+ XA_CHARSET_REGISTRY,
+ XA_CHARSET_ENCODING,
+#if ENABLE_FRILLS
+ XA_MOTIF_WM_HINTS,
+#endif
+#if ENABLE_EWMH
+ XA_NET_WM_PID,
+ XA_NET_WM_NAME,
+ XA_NET_WM_ICON_NAME,
+ XA_NET_WM_PING,
+ XA_NET_WM_ICON,
+#endif
+#if USE_XIM
+ XA_WM_LOCALE_NAME,
+ XA_XIM_SERVERS,
+#endif
+#if HAVE_IMG || ENABLE_PERL
+ XA_XROOTPMAP_ID,
+ XA_ESETROOT_PMAP_ID,
+#endif
+#if ENABLE_XEMBED
+ XA_XEMBED,
+ XA_XEMBED_INFO,
+#endif
+#if !ENABLE_MINIMAL
+ // these are usually allocated by other subsystems, but we do it
+ // here to avoid a server roundtrip.
+ XA_SCREEN_RESOURCES,
+ XA_XDCCC_LINEAR_RGB_CORRECTION,
+ XA_XDCCC_LINEAR_RGB_MATRICES,
+ XA_WM_COLORMAP_WINDOWS,
+ XA_WM_STATE,
+ XA_cursor,
+# if USE_XIM
+ // various selection targets used by XIM
+ XA_TRANSPORT,
+ XA_LOCALES,
+ XA__XIM_PROTOCOL,
+ XA__XIM_XCONNECT,
+ XA__XIM_MOREDATA,
+# endif
+#endif
+ NUM_XA
+};
+
+struct rxvt_term;
+struct rxvt_display;
+
+struct im_watcher;
+struct xevent_watcher;
+
+template<class watcher>
+struct event_vec : vector<watcher *>
+{
+ void erase_unordered (unsigned int pos)
+ {
+ watcher *w = (*this)[this->size () - 1];
+ this->pop_back ();
+
+ if (!this->empty ())
+ if (((*this)[pos] = w)) // '=' is correct!
+ w->active = pos + 1;
+ }
+};
+
+struct rxvt_watcher
+{
+ int active; /* 0 == inactive, else index into respective vector */
+
+ bool is_active () { return active; }
+
+ rxvt_watcher () : active (0) { }
+};
+
+struct refcounted
+{
+ int referenced;
+ char *id;
+
+ refcounted (const char *id);
+ bool ref_init () { return false; }
+ void ref_next () { }
+ ~refcounted ();
+};
+
+template<class T>
+struct refcache : vector<T *>
+{
+ T *get (const char *id);
+ void put (T *obj);
+ void clear ();
+
+ ~refcache ()
+ {
+ clear ();
+ }
+};
+
+/////////////////////////////////////////////////////////////////////////////
+
+struct rxvt_screen;
+
+struct rxvt_drawable
+{
+ rxvt_screen *screen;
+ Drawable drawable;
+ operator Drawable() { return drawable; }
+
+#if XFT
+ XftDraw *xftdrawable;
+ operator XftDraw *();
+#endif
+
+ rxvt_drawable (rxvt_screen *screen, Drawable drawable)
+ : screen(screen),
+#if XFT
+ xftdrawable(0),
+#endif
+ drawable(drawable)
+ { }
+
+#if XFT
+ ~rxvt_drawable ();
+#endif
+};
+
+/////////////////////////////////////////////////////////////////////////////
+
+#if USE_XIM
+struct rxvt_xim : refcounted
+{
+ void destroy ();
+ rxvt_display *display;
+
+//public
+ XIM xim;
+
+ rxvt_xim (const char *id) : refcounted (id) { }
+ bool ref_init ();
+ ~rxvt_xim ();
+};
+#endif
+
+struct rxvt_screen
+{
+ rxvt_display *display;
+ Display *dpy;
+ int depth;
+ Visual *visual;
+ Colormap cmap;
+
+#if XFT
+ // scratch pixmap
+ rxvt_drawable *scratch_area;
+ int scratch_w, scratch_h;
+
+ rxvt_drawable &scratch_drawable (int w, int h);
+
+ rxvt_screen ();
+#endif
+
+ void set (rxvt_display *disp);
+ void select_visual (int id);
+ void select_depth (int bitdepth); // select visual by depth
+ void clear ();
+};
+
+enum
+{
+ DISPLAY_HAS_RENDER = 1 << 0,
+ DISPLAY_HAS_RENDER_CONV = 1 << 1,
+};
+
+struct rxvt_display : refcounted
+{
+ event_vec<xevent_watcher> xw;
+
+ ev::prepare flush_ev; void flush_cb (ev::prepare &w, int revents);
+ ev::io x_ev ; void x_cb (ev::io &w, int revents);
+
+#if USE_XIM
+ refcache<rxvt_xim> xims;
+ vector<im_watcher *> imw;
+
+ void im_change_cb ();
+ void im_change_check ();
+#endif
+
+//public
+ Display *dpy;
+ int screen;
+ Window root;
+ rxvt_term *selection_owner;
+ rxvt_term *clipboard_owner;
+ Atom xa[NUM_XA];
+ bool is_local;
+#ifdef POINTER_BLANK
+ Cursor blank_cursor;
+#endif
+ uint8_t flags;
+
+ rxvt_display (const char *id);
+ XrmDatabase get_resources (bool refresh);
+ bool ref_init ();
+ void ref_next ();
+ ~rxvt_display ();
+
+ void flush ()
+ {
+ flush_ev.start ();
+ }
+
+ Atom atom (const char *name);
+ Pixmap get_pixmap_property (Atom property);
+ void set_selection_owner (rxvt_term *owner, bool clipboard);
+
+ void reg (xevent_watcher *w);
+ void unreg (xevent_watcher *w);
+
+#if USE_XIM
+ void reg (im_watcher *w);
+ void unreg (im_watcher *w);
+
+ rxvt_xim *get_xim (const char *locale, const char *modifiers);
+ void put_xim (rxvt_xim *xim);
+#endif
+};
+
+#if USE_XIM
+struct im_watcher : rxvt_watcher, callback<void (void)>
+{
+ void start (rxvt_display *display)
+ {
+ display->reg (this);
+ }
+
+ void stop (rxvt_display *display)
+ {
+ display->unreg (this);
+ }
+};
+#endif
+
+struct xevent_watcher : rxvt_watcher, callback<void (XEvent &)>
+{
+ Window window;
+
+ void start (rxvt_display *display, Window window)
+ {
+ this->window = window;
+ display->reg (this);
+ }
+
+ void stop (rxvt_display *display)
+ {
+ display->unreg (this);
+ }
+};
+
+extern refcache<rxvt_display> displays;
+
+/////////////////////////////////////////////////////////////////////////////
+
+typedef unsigned long Pixel;
+
+struct rgba
+{
+ uint16_t r, g, b, a;
+
+ enum { MIN_CC = 0x0000, MAX_CC = 0xffff };
+
+ rgba ()
+ { }
+
+ rgba (uint16_t r, uint16_t g, uint16_t b, uint16_t a = MAX_CC)
+ : r(r), g(g), b(b), a(a)
+ { }
+};
+
+struct rxvt_color
+{
+#if XFT
+ XftColor c;
+#else
+ XColor c;
+#endif
+
+ operator Pixel () const { return c.pixel; }
+
+ bool operator == (const rxvt_color &b) const { return Pixel (*this) == Pixel (b); }
+ bool operator != (const rxvt_color &b) const { return Pixel (*this) != Pixel (b); }
+
+ bool is_opaque () const
+ {
+#if XFT
+ return c.color.alpha == rgba::MAX_CC;
+#else
+ return 1;
+#endif
+ }
+
+ bool alloc (rxvt_screen *screen, const rgba &color);
+ void free (rxvt_screen *screen);
+
+ operator rgba () const
+ {
+ rgba c;
+ get (c);
+ return c;
+ }
+ void get (rgba &color) const;
+ void get (XColor &color) const;
+
+ bool set (rxvt_screen *screen, const char *name);
+ bool set (rxvt_screen *screen, const rgba &color);
+
+ void fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to = rgba (0, 0, 0));
+};
+
+#define Sel_normal 0x01 /* normal selection */
+#define Sel_incr 0x02 /* incremental selection */
+#define Sel_Primary 0x01
+#define Sel_Secondary 0x02
+#define Sel_Clipboard 0x03
+#define Sel_whereMask 0x0f
+#define Sel_CompoundText 0x10 /* last request was COMPOUND_TEXT */
+#define Sel_UTF8String 0x20 /* last request was UTF8_STRING */
+
+struct rxvt_selection
+{
+ rxvt_selection (rxvt_display *disp, int selnum, Time tm, Window win, Atom prop, rxvt_term *term);
+ void run ();
+ ~rxvt_selection ();
+
+ rxvt_term *term; // terminal to paste to, may be 0
+ void *cb_sv; // managed by perl
+
+ rxvt_display *display;
+ Time request_time;
+ Window request_win;
+ Atom request_prop;
+
+private:
+ unsigned char selection_wait;
+ unsigned char selection_type;
+
+ char *incr_buf;
+ size_t incr_buf_size, incr_buf_fill;
+
+ void timer_cb (ev::timer &w, int revents); ev::timer timer_ev;
+ void x_cb (XEvent &xev); xevent_watcher x_ev;
+
+ void finish (char *data = 0, unsigned int len = 0);
+ void stop ();
+ bool request (Atom target, int selnum);
+ void handle_selection (Window win, Atom prop, bool delete_prop);
+};
+
+#endif
+
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