diff options
Diffstat (limited to 'generic/ttk/ttkScroll.c')
| -rw-r--r-- | generic/ttk/ttkScroll.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/generic/ttk/ttkScroll.c b/generic/ttk/ttkScroll.c index f596bb4..7ac4f14 100644 --- a/generic/ttk/ttkScroll.c +++ b/generic/ttk/ttkScroll.c @@ -7,7 +7,7 @@ * * Scrollable interface: * - * + 'first' is controlled by [xy]view widget command + * + 'first' is controlled by [xy]view widget command * and other scrolling commands like 'see'; * + 'total' depends on widget contents; * + 'last' depends on first, total, and widget size. @@ -16,15 +16,15 @@ * * 1. User adjusts scrollbar, scrollbar widget calls its -command * 2. Scrollbar -command invokes the scrollee [xy]view widget method - * 3. TtkScrollviewCommand calls TtkScrollTo(), which updates + * 3. TtkScrollviewCommand calls TtkScrollTo(), which updates * 'first' and schedules a redisplay. - * 4. Once the scrollee knows 'total' and 'last' (typically in - * the LayoutProc), call TtkScrolled(h,first,last,total) to + * 4. Once the scrollee knows 'total' and 'last' (typically in + * the LayoutProc), call TtkScrolled(h,first,last,total) to * synchronize the scrollbar. * 5. The scrollee -[xy]scrollcommand is called (in an idle callback) * 6. Which calls the scrollbar 'set' method and redisplays the scrollbar. * - * If the scrollee has internal scrolling (e.g., a 'see' method), + * If the scrollee has internal scrolling (e.g., a 'see' method), * it should TtkScrollTo() directly (step 2). * * If the widget value changes, it should call TtkScrolled() (step 4). @@ -78,6 +78,7 @@ static int UpdateScrollbar(Tcl_Interp *interp, ScrollHandle h) char arg1[TCL_DOUBLE_SPACE + 2]; char arg2[TCL_DOUBLE_SPACE + 2]; int code; + Tcl_DString buf; h->flags &= ~SCROLL_UPDATE_REQUIRED; @@ -88,9 +89,14 @@ static int UpdateScrollbar(Tcl_Interp *interp, ScrollHandle h) arg1[0] = arg2[0] = ' '; Tcl_PrintDouble(interp, (double)s->first / s->total, arg1+1); Tcl_PrintDouble(interp, (double)s->last / s->total, arg2+1); + Tcl_DStringInit(&buf); + Tcl_DStringAppend(&buf, s->scrollCmd, -1); + Tcl_DStringAppend(&buf, arg1, -1); + Tcl_DStringAppend(&buf, arg2, -1); Tcl_Preserve(corePtr); - code = Tcl_VarEval(interp, s->scrollCmd, arg1, arg2, NULL); + code = Tcl_EvalEx(interp, Tcl_DStringValue(&buf), -1, TCL_EVAL_GLOBAL); + Tcl_DStringFree(&buf); if (WidgetDestroyed(corePtr)) { Tcl_Release(corePtr); return TCL_ERROR; @@ -135,7 +141,7 @@ static void UpdateScrollbarBG(ClientData clientData) void TtkScrolled(ScrollHandle h, int first, int last, int total) { Scrollable *s = h->scrollPtr; - + /* Sanity-check inputs: */ if (total <= 0) { |