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authorhobbs <hobbs>2005-10-18 00:41:19 (GMT)
committerhobbs <hobbs>2005-10-18 00:41:19 (GMT)
commitd1c304bb096bd57d496fca0478a1a3383fb63fea (patch)
treeab94192f055f3532a65008b154ab4682c920804b /macosx
parent510addfcfe97beccccfa34d588bd9ff828d504de (diff)
downloadtk-d1c304bb096bd57d496fca0478a1a3383fb63fea.zip
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* macosx/tkMacOSXScrlbr.c (UpdateControlValues): check geomMgrPtr
is valid before checking type
Diffstat (limited to 'macosx')
-rw-r--r--macosx/tkMacOSXScrlbr.c33
1 files changed, 16 insertions, 17 deletions
diff --git a/macosx/tkMacOSXScrlbr.c b/macosx/tkMacOSXScrlbr.c
index c56a15b..0dd42e0 100644
--- a/macosx/tkMacOSXScrlbr.c
+++ b/macosx/tkMacOSXScrlbr.c
@@ -11,7 +11,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkMacOSXScrlbr.c,v 1.5.2.5 2005/08/09 07:40:01 das Exp $
+ * RCS: @(#) $Id: tkMacOSXScrlbr.c,v 1.5.2.6 2005/10/18 00:41:19 hobbs Exp $
*/
#include "tkScrollbar.h"
@@ -976,14 +976,14 @@ UpdateControlValues(
* NOTE: changing the control record directly may not work when
* Apple releases the Copland version of the MacOS (or when hell is cold).
*/
-
+
contrlRect.left = macDraw->xOff + scrollPtr->inset;
contrlRect.top = macDraw->yOff + scrollPtr->inset;
contrlRect.right = macDraw->xOff + Tk_Width(tkwin) - scrollPtr->inset;
contrlRect.bottom = macDraw->yOff + Tk_Height(tkwin) - scrollPtr->inset;
-
+
SetControlBounds(macScrollPtr->sbHandle, &contrlRect );
-
+
/*
* To make Tk applications look more like Macintosh applications without
* requiring additional work by the Tk developer we do some cute tricks.
@@ -993,7 +993,8 @@ UpdateControlValues(
* it covers the area of the grow region ao the scrollbar can also draw
* the grow region if need be.
*/
- if (!strcmp(macDraw->winPtr->geomMgrPtr->name, "place")) {
+ if ((macDraw->winPtr->geomMgrPtr != NULL)
+ && !strcmp(macDraw->winPtr->geomMgrPtr->name, "place")) {
macScrollPtr->macFlags &= ~AUTO_ADJUST;
} else {
macScrollPtr->macFlags |= AUTO_ADJUST;
@@ -1016,7 +1017,7 @@ UpdateControlValues(
TkpComputeScrollbarGeometry(scrollPtr);
}
}
-
+
if (portRect.top == contrlRect.top) {
if (macScrollPtr->macFlags & AUTO_ADJUST) {
contrlRect.top--;
@@ -1033,7 +1034,7 @@ UpdateControlValues(
TkpComputeScrollbarGeometry(scrollPtr);
}
}
-
+
if (portRect.right == contrlRect.right) {
flushRight = true;
if (macScrollPtr->macFlags & AUTO_ADJUST) {
@@ -1051,7 +1052,7 @@ UpdateControlValues(
TkpComputeScrollbarGeometry(scrollPtr);
}
}
-
+
if (portRect.bottom == contrlRect.bottom) {
flushBottom = true;
if (macScrollPtr->macFlags & AUTO_ADJUST) {
@@ -1090,7 +1091,7 @@ UpdateControlValues(
} else {
TkMacOSXSetScrollbarGrow((TkWindow *) tkwin, false);
}
-
+
/*
* Given the Tk parameters for the fractions of the start and
* end of the thumb, the following calculation determines the
@@ -1102,11 +1103,10 @@ UpdateControlValues(
* the content area less the size of the view area.
* Since these values are all integers, and Tk gives the thumb position
* as fractions, we have introduced a scaling factor.
- *
*/
dViewSize = (scrollPtr->lastFraction - scrollPtr->firstFraction)
* SCROLLBAR_SCALING_DVALUE;
-
+
viewSize = (SInt32) dViewSize;
controlMax = (SInt32) (SCROLLBAR_SCALING_DVALUE - dViewSize);
controlValue = (SInt32) (SCROLLBAR_SCALING_DVALUE * scrollPtr->firstFraction);
@@ -1114,19 +1114,18 @@ UpdateControlValues(
SetControlViewSize(macScrollPtr->sbHandle,viewSize);
SetControl32BitMaximum(macScrollPtr->sbHandle, controlMax);
-#if 0
+#if 0
middle = scrollPtr->firstFraction /
(1.0 - (scrollPtr->lastFraction - scrollPtr->firstFraction));
-
+
viewSize = (SInt32) ((scrollPtr->lastFraction - scrollPtr->firstFraction)
* SCROLLBAR_SCALING_DVALUE
/ (1.0 - (scrollPtr->lastFraction - scrollPtr->firstFraction)));
-
SetControlViewSize(macScrollPtr->sbHandle,viewSize);
- SetControl32BitValue(macScrollPtr->sbHandle,
+ SetControl32BitValue(macScrollPtr->sbHandle,
(middle) );
-#endif
+#endif
contrlHilite = GetControlHilite(macScrollPtr->sbHandle);
SetControl32BitMinimum(macScrollPtr->sbHandle, 0);
if ( contrlHilite == 0 || contrlHilite == 255) {
@@ -1138,7 +1137,7 @@ UpdateControlValues(
}
}
SetControl32BitValue(macScrollPtr->sbHandle, controlValue);
-
+
if ( !IsControlVisible (macScrollPtr -> sbHandle) ) {
SetControlVisibility(macScrollPtr->sbHandle,TRUE,FALSE);
}