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Diffstat (limited to 'generic/tkCanvas.c')
-rw-r--r--generic/tkCanvas.c65
1 files changed, 41 insertions, 24 deletions
diff --git a/generic/tkCanvas.c b/generic/tkCanvas.c
index c696d65..97518f9 100644
--- a/generic/tkCanvas.c
+++ b/generic/tkCanvas.c
@@ -269,7 +269,7 @@ static int ConfigureCanvas(Tcl_Interp *interp,
Tcl_Obj *const *argv, int flags);
static void DestroyCanvas(char *memPtr);
static void DisplayCanvas(ClientData clientData);
-static void DoItem(Tcl_Interp *interp,
+static void DoItem(Tcl_Obj *accumObj,
Tk_Item *itemPtr, Tk_Uid tag);
static void EventuallyRedrawItem(TkCanvas *canvasPtr,
Tk_Item *itemPtr);
@@ -333,10 +333,10 @@ static const Tk_ClassProcs canvasClass = {
#ifdef USE_OLD_TAG_SEARCH
#define FIRST_CANVAS_ITEM_MATCHING(objPtr,searchPtrPtr,errorExitClause) \
- (itemPtr) = StartTagSearch(canvasPtr,(objPtr),&search)
+ itemPtr = StartTagSearch(canvasPtr,(objPtr),&search)
#define FOR_EVERY_CANVAS_ITEM_MATCHING(objPtr,searchPtrPtr,errorExitClause) \
- for ((itemPtr) = StartTagSearch(canvasPtr, (objPtr), &search); \
- (itemPtr) != NULL; (itemPtr) = NextItem(&search))
+ for (itemPtr = StartTagSearch(canvasPtr, (objPtr), &search); \
+ itemPtr != NULL; itemPtr = NextItem(&search))
#define FIND_ITEMS(objPtr, n) \
FindItems(interp, canvasPtr, objc, objv, (objPtr), (n))
#define RELINK_ITEMS(objPtr, itemPtr) \
@@ -1504,9 +1504,13 @@ CanvasWidgetCmd(
FIRST_CANVAS_ITEM_MATCHING(objv[2], &searchPtr, goto done);
if (itemPtr != NULL) {
int i;
+ Tcl_Obj *resultObj = Tcl_NewObj();
+
for (i = 0; i < itemPtr->numTags; i++) {
- Tcl_AppendElement(interp, (char *) itemPtr->tagPtr[i]);
+ Tcl_ListObjAppendElement(NULL, resultObj,
+ Tcl_NewStringObj(itemPtr->tagPtr[i], -1));
}
+ Tcl_SetObjResult(interp, resultObj);
}
break;
case CANV_ICURSOR: {
@@ -4162,23 +4166,23 @@ TagSearchNext(
* DoItem --
*
* This is a utility function called by FindItems. It either adds
- * itemPtr's id to the result forming in interp, or it adds a new tag to
+ * itemPtr's id to the list being constructed, or it adds a new tag to
* itemPtr, depending on the value of tag.
*
* Results:
* None.
*
* Side effects:
- * If tag is NULL then itemPtr's id is added as a list element to the
- * interp's result; otherwise tag is added to itemPtr's list of tags.
+ * If tag is NULL then itemPtr's id is added as an element to the
+ * supplied object; otherwise tag is added to itemPtr's list of tags.
*
*--------------------------------------------------------------
*/
static void
DoItem(
- Tcl_Interp *interp, /* Interpreter in which to (possibly) record
- * item id. */
+ Tcl_Obj *accumObj, /* Object in which to (possibly) record item
+ * id. */
Tk_Item *itemPtr, /* Item to (possibly) modify. */
Tk_Uid tag) /* Tag to add to those already present for
* item, or NULL. */
@@ -4191,10 +4195,7 @@ DoItem(
*/
if (tag == NULL) {
- char msg[TCL_INTEGER_SPACE];
-
- sprintf(msg, "%d", itemPtr->id);
- Tcl_AppendElement(interp, msg);
+ Tcl_ListObjAppendElement(NULL, accumObj, Tcl_NewIntObj(itemPtr->id));
return;
}
@@ -4281,6 +4282,7 @@ FindItems(
Tk_Item *itemPtr;
Tk_Uid uid;
int index, result;
+ Tcl_Obj *resultObj;
static const char *const optionStrings[] = {
"above", "all", "below", "closest",
"enclosed", "overlapping", "withtag", NULL
@@ -4312,7 +4314,9 @@ FindItems(
lastPtr = itemPtr;
}
if ((lastPtr != NULL) && (lastPtr->nextPtr != NULL)) {
- DoItem(interp, lastPtr->nextPtr, uid);
+ resultObj = Tcl_NewObj();
+ DoItem(resultObj, lastPtr->nextPtr, uid);
+ Tcl_SetObjResult(interp, resultObj);
}
break;
}
@@ -4322,10 +4326,12 @@ FindItems(
return TCL_ERROR;
}
+ resultObj = Tcl_NewObj();
for (itemPtr = canvasPtr->firstItemPtr; itemPtr != NULL;
itemPtr = itemPtr->nextPtr) {
- DoItem(interp, itemPtr, uid);
+ DoItem(resultObj, itemPtr, uid);
}
+ Tcl_SetObjResult(interp, resultObj);
break;
case CANV_BELOW:
@@ -4335,10 +4341,10 @@ FindItems(
}
FIRST_CANVAS_ITEM_MATCHING(objv[first+1], searchPtrPtr,
return TCL_ERROR);
- if (itemPtr != NULL) {
- if (itemPtr->prevPtr != NULL) {
- DoItem(interp, itemPtr->prevPtr, uid);
- }
+ if ((itemPtr != NULL) && (itemPtr->prevPtr != NULL)) {
+ resultObj = Tcl_NewObj();
+ DoItem(resultObj, itemPtr->prevPtr, uid);
+ Tcl_SetObjResult(interp, resultObj);
}
break;
case CANV_CLOSEST: {
@@ -4428,7 +4434,9 @@ FindItems(
itemPtr = canvasPtr->firstItemPtr;
}
if (itemPtr == startPtr) {
- DoItem(interp, closestPtr, uid);
+ resultObj = Tcl_NewObj();
+ DoItem(resultObj, closestPtr, uid);
+ Tcl_SetObjResult(interp, resultObj);
return TCL_OK;
}
if (itemPtr->state == TK_STATE_HIDDEN ||
@@ -4466,10 +4474,16 @@ FindItems(
Tcl_WrongNumArgs(interp, first+1, objv, "tagOrId");
return TCL_ERROR;
}
+ resultObj = Tcl_NewObj();
FOR_EVERY_CANVAS_ITEM_MATCHING(objv[first+1], searchPtrPtr,
- return TCL_ERROR) {
- DoItem(interp, itemPtr, uid);
+ goto badWithTagSearch) {
+ DoItem(resultObj, itemPtr, uid);
}
+ Tcl_SetObjResult(interp, resultObj);
+ return TCL_OK;
+ badWithTagSearch:
+ Tcl_DecrRefCount(resultObj);
+ return TCL_ERROR;
}
return TCL_OK;
}
@@ -4514,6 +4528,7 @@ FindArea(
double rect[4], tmp;
int x1, y1, x2, y2;
Tk_Item *itemPtr;
+ Tcl_Obj *resultObj;
if ((Tk_CanvasGetCoordFromObj(interp, (Tk_Canvas) canvasPtr, objv[0],
&rect[0]) != TCL_OK)
@@ -4541,6 +4556,7 @@ FindArea(
y1 = (int) (rect[1] - 1.0);
x2 = (int) (rect[2] + 1.0);
y2 = (int) (rect[3] + 1.0);
+ resultObj = Tcl_NewObj();
for (itemPtr = canvasPtr->firstItemPtr; itemPtr != NULL;
itemPtr = itemPtr->nextPtr) {
if (itemPtr->state == TK_STATE_HIDDEN ||
@@ -4553,9 +4569,10 @@ FindArea(
continue;
}
if (ItemOverlap(canvasPtr, itemPtr, rect) >= enclosed) {
- DoItem(interp, itemPtr, uid);
+ DoItem(resultObj, itemPtr, uid);
}
}
+ Tcl_SetObjResult(interp, resultObj);
return TCL_OK;
}