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ncurses 6.3 - patch 20211021
[ncurses.git] / ncurses / base / lib_mouse.c
diff --git a/ncurses/base/lib_mouse.c b/ncurses/base/lib_mouse.c
index f703a24f40f35adff9cdedc38de9230a3190ac56..2fb261df0734696948dcc7887921b75e73319422 100644 (file)
--- a/ncurses/base/lib_mouse.c
+++ b/ncurses/base/lib_mouse.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998-2017,2018 Free Software Foundation, Inc.              *
+ * Copyright 2018-2020,2021 Thomas E. Dickey                                *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -84,7 +85,7 @@
 #define CUR SP_TERMTYPE
 #endif
 
-MODULE_ID("$Id: lib_mouse.c,v 1.177 2018/09/22 19:54:21 tom Exp $")
+MODULE_ID("$Id: lib_mouse.c,v 1.193 2021/03/20 12:56:32 tom Exp $")
 
 #include <tic.h>
 
@@ -141,19 +142,29 @@ make an error
 #define        MASK_RESERVED_EVENT(x)  (mmask_t) NCURSES_MOUSE_MASK(x, 040)
 
 #if NCURSES_MOUSE_VERSION == 1
+
 #define BUTTON_CLICKED        (BUTTON1_CLICKED        | BUTTON2_CLICKED        | BUTTON3_CLICKED        | BUTTON4_CLICKED)
 #define BUTTON_PRESSED        (BUTTON1_PRESSED        | BUTTON2_PRESSED        | BUTTON3_PRESSED        | BUTTON4_PRESSED)
 #define BUTTON_RELEASED       (BUTTON1_RELEASED       | BUTTON2_RELEASED       | BUTTON3_RELEASED       | BUTTON4_RELEASED)
 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED)
 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED)
+
 #define MAX_BUTTONS  4
+
 #else
+
 #define BUTTON_CLICKED        (BUTTON1_CLICKED        | BUTTON2_CLICKED        | BUTTON3_CLICKED        | BUTTON4_CLICKED        | BUTTON5_CLICKED)
 #define BUTTON_PRESSED        (BUTTON1_PRESSED        | BUTTON2_PRESSED        | BUTTON3_PRESSED        | BUTTON4_PRESSED        | BUTTON5_PRESSED)
 #define BUTTON_RELEASED       (BUTTON1_RELEASED       | BUTTON2_RELEASED       | BUTTON3_RELEASED       | BUTTON4_RELEASED       | BUTTON5_RELEASED)
 #define BUTTON_DOUBLE_CLICKED (BUTTON1_DOUBLE_CLICKED | BUTTON2_DOUBLE_CLICKED | BUTTON3_DOUBLE_CLICKED | BUTTON4_DOUBLE_CLICKED | BUTTON5_DOUBLE_CLICKED)
 #define BUTTON_TRIPLE_CLICKED (BUTTON1_TRIPLE_CLICKED | BUTTON2_TRIPLE_CLICKED | BUTTON3_TRIPLE_CLICKED | BUTTON4_TRIPLE_CLICKED | BUTTON5_TRIPLE_CLICKED)
+
+#if NCURSES_MOUSE_VERSION == 2
 #define MAX_BUTTONS  5
+#else
+#define MAX_BUTTONS  11
+#endif
+
 #endif
 
 #define INVALID_EVENT  -1
@@ -408,13 +419,22 @@ init_xterm_mouse(SCREEN *sp)
     } else {
        int code = tigetnum("XM");
        switch (code) {
+#ifdef EXP_XTERM_1005
+       case 1005:
+           /* see "xterm+sm+1005" */
+           sp->_mouse_xtermcap = "\033[?1005;1000%?%p1%{1}%=%th%el%;";
+           sp->_mouse_format = MF_XTERM_1005;
+           break;
+#endif
        case 1006:
+           /* see "xterm+sm+1006" */
+           sp->_mouse_xtermcap = "\033[?1006;1000%?%p1%{1}%=%th%el%;";
+           sp->_mouse_format = MF_SGR1006;
            break;
        default:
-           code = 1000;
+           sp->_mouse_xtermcap = "\033[?1000%?%p1%{1}%=%th%el%;";
            break;
        }
-       sp->_mouse_xtermcap = "\033[?1000%?%p1%{1}%=%th%el%;";
     }
 }
 #endif
@@ -425,7 +445,7 @@ enable_xterm_mouse(SCREEN *sp, int enable)
 #if USE_EMX_MOUSE
     sp->_emxmouse_activated = enable;
 #else
-    NCURSES_PUTP2("xterm-mouse", TPARM_1(sp->_mouse_xtermcap, enable));
+    NCURSES_PUTP2("xterm-mouse", TIPARM_1(sp->_mouse_xtermcap, enable));
 #endif
     sp->_mouse_active = enable;
 }
@@ -438,7 +458,7 @@ allow_gpm_mouse(SCREEN *sp GCC_UNUSED)
 
 #if USE_WEAK_SYMBOLS
     /* Danger Robinson: do not use dlopen for libgpm if already loaded */
-    if ((Gpm_Wgetch)) {
+    if ((Gpm_Wgetch) != 0) {
        if (!sp->_mouse_gpm_loaded) {
            T(("GPM library was already dlopen'd, not by us"));
        }
@@ -476,8 +496,6 @@ unload_gpm_library(SCREEN *sp)
        T(("unload GPM library"));
        sp->_mouse_gpm_loaded = FALSE;
        sp->_mouse_fd = -1;
-       dlclose(sp->_dlopen_gpm);
-       sp->_dlopen_gpm = 0;
     }
 }
 
@@ -485,7 +503,14 @@ static void
 load_gpm_library(SCREEN *sp)
 {
     sp->_mouse_gpm_found = FALSE;
-    if ((sp->_dlopen_gpm = dlopen(LIBGPM_SONAME, my_RTLD)) != 0) {
+
+    /*
+     * If we already had a successful dlopen, reuse it.
+     */
+    if (sp->_dlopen_gpm != 0) {
+       sp->_mouse_gpm_found = TRUE;
+       sp->_mouse_gpm_loaded = TRUE;
+    } else if ((sp->_dlopen_gpm = dlopen(LIBGPM_SONAME, my_RTLD)) != 0) {
 #if (defined(__GNUC__) && (__GNUC__ >= 5)) || defined(__clang__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpedantic"
@@ -499,13 +524,15 @@ load_gpm_library(SCREEN *sp)
 #endif
            T(("GPM initialization failed: %s", dlerror()));
            unload_gpm_library(sp);
+           dlclose(sp->_dlopen_gpm);
+           sp->_dlopen_gpm = 0;
        } else {
            sp->_mouse_gpm_found = TRUE;
            sp->_mouse_gpm_loaded = TRUE;
        }
     }
 }
-#endif
+#endif /* HAVE_LIBDL */
 
 static bool
 enable_gpm_mouse(SCREEN *sp, bool enable)
@@ -605,7 +632,7 @@ initialize_mousetype(SCREEN *sp)
 #if USE_EMX_MOUSE
     if (!sp->_emxmouse_thread
        && strstr(SP_TERMTYPE term_names, "xterm") == 0
-       && key_mouse) {
+       && NonEmpty(key_mouse)) {
        int handles[2];
 
        if (pipe(handles) < 0) {
@@ -716,11 +743,8 @@ initialize_mousetype(SCREEN *sp)
     CallDriver(sp, td_initmouse);
 #else
     /* we know how to recognize mouse events under "xterm" */
-    if (key_mouse != 0) {
-       if (!strcmp(key_mouse, xterm_kmous)
-           || strstr(SP_TERMTYPE term_names, "xterm") != 0) {
-           init_xterm_mouse(sp);
-       }
+    if (NonEmpty(key_mouse)) {
+       init_xterm_mouse(sp);
     } else if (strstr(SP_TERMTYPE term_names, "xterm") != 0) {
        if (_nc_add_to_try(&(sp->_keytry), xterm_kmous, KEY_MOUSE) == OK)
            init_xterm_mouse(sp);
@@ -930,7 +954,7 @@ handle_wheel(SCREEN *sp, MEVENT * eventp, int button, int wheel)
        break;
     case 1:
        if (wheel) {
-#if NCURSES_MOUSE_VERSION == 2
+#if NCURSES_MOUSE_VERSION >= 2
            eventp->bstate = MASK_PRESS(5);
            /* See comment above for button 4 */
 #else
@@ -955,11 +979,24 @@ static bool
 decode_X10_bstate(SCREEN *sp, MEVENT * eventp, unsigned intro)
 {
     bool result;
+    int button = 0;
+    int wheel = (intro & 96) == 96;
 
-    _tracef("decode_X10_bstate %#x", intro);
     eventp->bstate = 0;
 
-    if (!handle_wheel(sp, eventp, (int) intro, (intro & 96) == 96)) {
+    if (intro >= 96) {
+       if (intro >= 160) {
+           button = (int) (intro - 152);       /* buttons 8-11 */
+       } else {
+           button = (int) (intro - 92);        /* buttons 4-7 */
+       }
+    } else {
+       button = (intro & 3);
+    }
+
+    if (button > MAX_BUTTONS) {
+       eventp->bstate = REPORT_MOUSE_POSITION;
+    } else if (!handle_wheel(sp, eventp, (int) intro, wheel)) {
 
        /*
         * Release events aren't reported for individual buttons, just for
@@ -1107,7 +1144,7 @@ decode_xterm_1005(SCREEN *sp, MEVENT * eventp)
 #else
                            sp->_ifd,
 #endif
-                           kbuf + grabbed, 1);
+                           (kbuf + grabbed), (size_t) 1);
        if (res == -1)
            break;
        grabbed += (size_t) res;
@@ -1192,7 +1229,7 @@ read_SGR(SCREEN *sp, SGR_DATA * result)
 #else
                            sp->_ifd,
 #endif
-                           kbuf + grabbed, 1);
+                           (kbuf + grabbed), (size_t) 1);
        if (res == -1)
            break;
        if ((grabbed + MAX_KBUF) >= (int) sizeof(kbuf)) {
@@ -1264,10 +1301,21 @@ decode_xterm_SGR1006(SCREEN *sp, MEVENT * eventp)
     if (read_SGR(sp, &data)) {
        int b = data.params[0];
        int b3 = 1 + (b & 3);
+       int wheel = ((b & 64) == 64);
+
+       if (b >= 132) {
+           b3 = MAX_BUTTONS + 1;
+       } else if (b >= 128) {
+           b3 = (b - 120);     /* buttons 8-11 */
+       } else if (b >= 64) {
+           b3 = (b - 60);      /* buttons 6-7 */
+       }
 
        eventp->id = NORMAL_EVENT;
        if (data.final == 'M') {
-           (void) handle_wheel(sp, eventp, b, (b & 64) == 64);
+           (void) handle_wheel(sp, eventp, b, wheel);
+       } else if (b3 > MAX_BUTTONS) {
+           eventp->bstate = REPORT_MOUSE_POSITION;
        } else {
            mmask_t pressed = (mmask_t) NCURSES_MOUSE_MASK(b3, NCURSES_BUTTON_PRESSED);
            mmask_t release = (mmask_t) NCURSES_MOUSE_MASK(b3, NCURSES_BUTTON_RELEASED);
@@ -1277,15 +1325,15 @@ decode_xterm_SGR1006(SCREEN *sp, MEVENT * eventp)
            } else {
                eventp->bstate = REPORT_MOUSE_POSITION;
            }
-           if (b & 4) {
-               eventp->bstate |= BUTTON_SHIFT;
-           }
-           if (b & 8) {
-               eventp->bstate |= BUTTON_ALT;
-           }
-           if (b & 16) {
-               eventp->bstate |= BUTTON_CTRL;
-           }
+       }
+       if (b & 4) {
+           eventp->bstate |= BUTTON_SHIFT;
+       }
+       if (b & 8) {
+           eventp->bstate |= BUTTON_ALT;
+       }
+       if (b & 16) {
+           eventp->bstate |= BUTTON_CTRL;
        }
        result = (eventp->bstate & REPORT_MOUSE_POSITION) ? TRUE : FALSE;
        eventp->x = (data.params[1] ? (data.params[1] - 1) : 0);
ncurses, with patches starting at ncurses-5.6; new users should use https://github.com/ThomasDickey/ncurses-snapshots/