X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/8ceabe903d3305c0a14836a2b021e92bfbf4a429..9a30e26b7801d63e4ccfe8d36169299c09b89dff:/terminal.c?ds=sidebyside

diff --git a/terminal.c b/terminal.c
index 7a21eeed..9f79701d 100644
--- a/terminal.c
+++ b/terminal.c
@@ -381,6 +381,9 @@ Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
     term->rows = term->cols = -1;
     power_on(term);
     term->beephead = term->beeptail = NULL;
+#ifdef OPTIMISE_SCROLL
+    term->scrollhead = term->scrolltail = NULL;
+#endif /* OPTIMISE_SCROLL */
     term->nbeeps = 0;
     term->lastbeep = FALSE;
     term->beep_overloaded = FALSE;
@@ -795,6 +798,35 @@ static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
 
 #ifdef OPTIMISE_SCROLL
 /*
+ * Add a scroll of a region on the screen into the pending scroll list.
+ * `lines' is +ve for scrolling forward, -ve for backward.
+ *
+ * If the scroll is on the same area as the last scroll in the list,
+ * merge them.
+ */
+void save_scroll(Terminal *term, int topline, int botline, int lines)
+{
+    struct scrollregion *newscroll;
+    if (term->scrolltail &&
+	term->scrolltail->topline == topline && 
+	term->scrolltail->botline == botline) {
+	term->scrolltail->lines += lines;
+    } else {
+	newscroll = smalloc(sizeof(struct scrollregion));
+	newscroll->topline = topline;
+	newscroll->botline = botline;
+	newscroll->lines = lines;
+	newscroll->next = NULL;
+
+	if (!term->scrollhead)
+	    term->scrollhead = newscroll;
+	else
+	    term->scrolltail->next = newscroll;
+	term->scrolltail = newscroll;
+    }
+}
+
+/*
  * Scroll the physical display, and our conception of it in disptext.
  */
 static void scroll_display(Terminal *term, int topline, int botline, int lines)
@@ -820,7 +852,7 @@ static void scroll_display(Terminal *term, int topline, int botline, int lines)
 	for (i = 0; i < distance; i++)
 	    start[i] |= ATTR_INVALID;
     }
-    do_scroll(term->frontend, topline, botline, lines);
+    save_scroll(term, topline, botline, lines);
 }
 #endif /* OPTIMISE_SCROLL */
 
@@ -3087,6 +3119,9 @@ static void do_paint(Terminal *term, Context ctx, int may_optimise)
     char ch[1024];
     long cursor_background = ERASE_CHAR;
     unsigned long ticks;
+#ifdef OPTIMISE_SCROLL
+    struct scrollregion *sr;
+#endif /* OPTIMISE_SCROLL */
 
     /*
      * Check the visual bell state.
@@ -3149,6 +3184,18 @@ static void do_paint(Terminal *term, Context ctx, int may_optimise)
     }
     term->dispcurs = NULL;
 
+#ifdef OPTIMISE_SCROLL
+    /* Do scrolls */
+    sr = term->scrollhead;
+    while (sr) {
+	struct scrollregion *next = sr->next;
+	do_scroll(ctx, sr->topline, sr->botline, sr->lines);
+	sfree(sr);
+	sr = next;
+    }
+    term->scrollhead = term->scrolltail = NULL;
+#endif /* OPTIMISE_SCROLL */
+
     /* The normal screen data */
     for (i = 0; i < term->rows; i++) {
 	unsigned long *ldata;
@@ -4052,7 +4099,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 
     fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
     for (i = 0; i < tlen; i++)
-	fprintf(stderr, " %04x", text[i]);
+	fprintf(stderr, " %04x", (unsigned)text[i]);
     fprintf(stderr, "\n");
 #endif
 
@@ -4101,8 +4148,8 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
     if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
 	text[0] >= 0x20 && text[0] <= 0x7e) {
 	/* ASCII chars + Control */
-	if (text[0] >= 0x40 && text[0] <= 0x5f ||
-	    text[0] >= 0x61 && text[0] <= 0x7a)
+	if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
+	    (text[0] >= 0x61 && text[0] <= 0x7a))
 	    text[0] &= 0x1f;
 	else {
 	    /*
@@ -4141,6 +4188,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	  case PK_KP7: c = 'y'; break;
 	  case PK_KP8: c = 'k'; break;
 	  case PK_KP9: c = 'u'; break;
+	  default: break; /* else gcc warns `enum value not used' */
 	}
 	if (c != 0) {
 	    if (c != '.') {
@@ -4171,6 +4219,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_PF2: xkey = 'Q'; break;
 	      case PK_PF3: xkey = 'R'; break;
 	      case PK_PF4: xkey = 'S'; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	}
 	if (term->app_keypad_keys && !term->cfg.no_applic_k) {
@@ -4187,6 +4236,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_KP9: xkey = 'y'; break;
 	      case PK_KPDECIMAL: xkey = 'n'; break;
 	      case PK_KPENTER: xkey = 'M'; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	    if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
 		/*
@@ -4221,6 +4271,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 		    break;
 		  case PK_KPMINUS: xkey = 'm'; break;
 		  case PK_KPCOMMA: xkey = 'l'; break;
+		  default: break; /* else gcc warns `enum value not used' */
 		}
 	    }
 	}
@@ -4247,6 +4298,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_KP7: keysym = PK_HOME; break;
 	      case PK_KP8: keysym = PK_UP; break;
 	      case PK_KP9: keysym = PK_PAGEUP; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	}
     }
@@ -4285,6 +4337,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 		*p++ = 0x0a;
 	    goto done;
 	}
+      default: break; /* else gcc warns `enum value not used' */
     }
 
     /* SCO function keys and editing keys */
@@ -4309,6 +4362,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_END:      xkey = 'F'; break;
 	      case PK_PAGEUP:   xkey = 'I'; break;
 	      case PK_PAGEDOWN: xkey = 'G'; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	    p += sprintf((char *) p, "\x1B[%c", xkey);
 	}
@@ -4326,6 +4380,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_END:      keysym = PK_PAGEUP;   break;
 	      case PK_PAGEUP:   keysym = PK_DELETE;   break;
 	      case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	}
 
@@ -4350,6 +4405,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	      case PK_END:      xkey = 'E'; break;
 	      case PK_PAGEUP:   xkey = 'I'; break;
 	      case PK_PAGEDOWN: xkey = 'G'; break;
+	      default: break; /* else gcc warns `enum value not used' */
 	    }
 	    p += sprintf((char *) p, "\x1B%c", xkey);
 	    goto done;
@@ -4362,6 +4418,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	  case PK_END:      code = 4; break;
 	  case PK_PAGEUP:   code = 5; break;
 	  case PK_PAGEDOWN: code = 6; break;
+	  default: break; /* else gcc warns `enum value not used' */
 	}
 	p += sprintf((char *) p, "\x1B[%d~", code);
 	goto done;
@@ -4405,6 +4462,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 	  case PK_RIGHT: xkey = 'C'; break;
 	  case PK_LEFT:  xkey = 'D'; break;
 	  case PK_REST:  xkey = 'G'; break; /* centre key on number pad */
+	  default: break; /* else gcc warns `enum value not used' */
 	}
 	if (term->vt52_mode)
 	    p += sprintf((char *) p, "\x1B%c", xkey);
@@ -4462,7 +4520,7 @@ void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
 #if 0
 	    fprintf(stderr, "sending %d unichars:", tlen);
 	    for (i = 0; i < tlen; i++)
-		fprintf(stderr, " %04x", text[i]);
+		fprintf(stderr, " %04x", (unsigned) text[i]);
 	    fprintf(stderr, "\n");
 #endif
 	    luni_send(term->ldisc, text, tlen, 1);