diff options
Diffstat (limited to 'generic/tkCanvas.c')
| -rw-r--r-- | generic/tkCanvas.c | 296 |
1 files changed, 170 insertions, 126 deletions
diff --git a/generic/tkCanvas.c b/generic/tkCanvas.c index 14d8261..07f1cfe 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) \ @@ -928,8 +928,10 @@ CanvasWidgetCmd( } if (object == NULL) { - Tcl_AppendResult(interp, "item \"", Tcl_GetString(objv[2]), - "\" doesn't exist", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "item \"%s\" doesn't exist", Tcl_GetString(objv[2]))); + Tcl_SetErrorCode(interp, "TK", "LOOKUP", "CANVAS_ITEM", + Tcl_GetString(objv[2]), NULL); result = TCL_ERROR; goto done; } @@ -953,8 +955,10 @@ CanvasWidgetCmd( } if (object == 0) { - Tcl_AppendResult(interp, "item \"", Tcl_GetString(objv[2]), - "\" doesn't exist", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "item \"%s\" doesn't exist", Tcl_GetString(objv[2]))); + Tcl_SetErrorCode(interp, "TK", "LOOKUP", "CANVAS_ITEM", + Tcl_GetString(objv[2]), NULL); result = TCL_ERROR; goto done; } @@ -1030,10 +1034,10 @@ CanvasWidgetCmd( |KeyReleaseMask|PointerMotionMask|VirtualEventMask)) { Tk_DeleteBinding(interp, canvasPtr->bindingTable, object, Tcl_GetString(objv[3])); - Tcl_ResetResult(interp); - Tcl_AppendResult(interp, "requested illegal events; ", - "only key, button, motion, enter, leave, and virtual", - " events may be used", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "requested illegal events; only key, button, motion," + " enter, leave, and virtual events may be used", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "BAD_EVENTS", NULL); result = TCL_ERROR; goto done; } @@ -1274,8 +1278,10 @@ CanvasWidgetCmd( Tcl_MutexUnlock(&typeListMutex); if (matchPtr == NULL) { badType: - Tcl_AppendResult(interp, - "unknown or ambiguous item type \"", arg, "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "unknown or ambiguous item type \"%s\"", arg)); + Tcl_SetErrorCode(interp, "TK", "LOOKUP", "CANVAS_ITEM_TYPE", arg, + NULL); result = TCL_ERROR; goto done; } @@ -1501,9 +1507,13 @@ 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: { @@ -1545,8 +1555,10 @@ CanvasWidgetCmd( } } if (itemPtr == NULL) { - Tcl_AppendResult(interp, "can't find an indexable item \"", - Tcl_GetString(objv[2]), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "can't find an indexable item \"%s\"", + Tcl_GetString(objv[2]))); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "INDEXABLE_ITEM", NULL); result = TCL_ERROR; goto done; } @@ -1647,8 +1659,10 @@ CanvasWidgetCmd( } else { FIRST_CANVAS_ITEM_MATCHING(objv[3], &searchPtr, goto done); if (itemPtr == NULL) { - Tcl_AppendResult(interp, "tag \"", Tcl_GetString(objv[3]), - "\" doesn't match any items", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "tagOrId \"%s\" doesn't match any items", + Tcl_GetString(objv[3]))); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "ITEM", NULL); result = TCL_ERROR; goto done; } @@ -1772,8 +1786,10 @@ CanvasWidgetCmd( prevPtr = itemPtr; } if (prevPtr == NULL) { - Tcl_AppendResult(interp, "tagOrId \"", Tcl_GetString(objv[3]), - "\" doesn't match any items", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "tagOrId \"%s\" doesn't match any items", + Tcl_GetString(objv[3]))); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "ITEM", NULL); result = TCL_ERROR; goto done; } @@ -1847,7 +1863,9 @@ CanvasWidgetCmd( goto done; } if ((xScale == 0.0) || (yScale == 0.0)) { - Tcl_SetResult(interp, "scale factor cannot be zero", TCL_STATIC); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "scale factor cannot be zero", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "BAD_SCALE", NULL); result = TCL_ERROR; goto done; } @@ -1925,9 +1943,11 @@ CanvasWidgetCmd( } } if (itemPtr == NULL) { - Tcl_AppendResult(interp, - "can't find an indexable and selectable item \"", - Tcl_GetString(objv[3]), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "can't find an indexable and selectable item \"%s\"", + Tcl_GetString(objv[3]))); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SELECTABLE_ITEM", + NULL); result = TCL_ERROR; goto done; } @@ -2019,6 +2039,7 @@ CanvasWidgetCmd( int newX = 0; /* Initialization needed only to prevent gcc * warnings. */ double fraction; + const char **args; if (objc == 2) { Tcl_SetObjResult(interp, ScrollFractions( @@ -2026,39 +2047,37 @@ CanvasWidgetCmd( canvasPtr->xOrigin + Tk_Width(canvasPtr->tkwin) - canvasPtr->inset, canvasPtr->scrollX1, canvasPtr->scrollX2)); - } else { - const char **args = TkGetStringsFromObjs(objc, objv); + break; + } - type = Tk_GetScrollInfo(interp, objc, args, &fraction, &count); - if (args != NULL) { - ckfree(args); - } - switch (type) { - case TK_SCROLL_ERROR: - result = TCL_ERROR; - goto done; - case TK_SCROLL_MOVETO: - newX = canvasPtr->scrollX1 - canvasPtr->inset - + (int) (fraction * (canvasPtr->scrollX2 - - canvasPtr->scrollX1) + 0.5); - break; - case TK_SCROLL_PAGES: - newX = (int) (canvasPtr->xOrigin + count * .9 + args = TkGetStringsFromObjs(objc, objv); + type = Tk_GetScrollInfo(interp, objc, args, &fraction, &count); + if (args != NULL) { + ckfree(args); + } + switch (type) { + case TK_SCROLL_ERROR: + result = TCL_ERROR; + goto done; + case TK_SCROLL_MOVETO: + newX = canvasPtr->scrollX1 - canvasPtr->inset + + (int) (fraction * (canvasPtr->scrollX2 + - canvasPtr->scrollX1) + 0.5); + break; + case TK_SCROLL_PAGES: + newX = (int) (canvasPtr->xOrigin + count * .9 + * (Tk_Width(canvasPtr->tkwin) - 2*canvasPtr->inset)); + break; + case TK_SCROLL_UNITS: + if (canvasPtr->xScrollIncrement > 0) { + newX = canvasPtr->xOrigin + count*canvasPtr->xScrollIncrement; + } else { + newX = (int) (canvasPtr->xOrigin + count * .1 * (Tk_Width(canvasPtr->tkwin) - 2*canvasPtr->inset)); - break; - case TK_SCROLL_UNITS: - if (canvasPtr->xScrollIncrement > 0) { - newX = canvasPtr->xOrigin - + count*canvasPtr->xScrollIncrement; - } else { - newX = (int) (canvasPtr->xOrigin + count * .1 - * (Tk_Width(canvasPtr->tkwin) - - 2*canvasPtr->inset)); - } - break; } - CanvasSetOrigin(canvasPtr, newX, canvasPtr->yOrigin); + break; } + CanvasSetOrigin(canvasPtr, newX, canvasPtr->yOrigin); break; } case CANV_YVIEW: { @@ -2066,6 +2085,7 @@ CanvasWidgetCmd( int newY = 0; /* Initialization needed only to prevent gcc * warnings. */ double fraction; + const char **args; if (objc == 2) { Tcl_SetObjResult(interp, ScrollFractions( @@ -2073,40 +2093,36 @@ CanvasWidgetCmd( canvasPtr->yOrigin + Tk_Height(canvasPtr->tkwin) - canvasPtr->inset, canvasPtr->scrollY1, canvasPtr->scrollY2)); - } else { - const char **args = TkGetStringsFromObjs(objc, objv); + break; + } - type = Tk_GetScrollInfo(interp, objc, args, &fraction, &count); - if (args != NULL) { - ckfree(args); - } - switch (type) { - case TK_SCROLL_ERROR: - result = TCL_ERROR; - goto done; - case TK_SCROLL_MOVETO: - newY = canvasPtr->scrollY1 - canvasPtr->inset - + (int) (fraction*(canvasPtr->scrollY2 - - canvasPtr->scrollY1) + 0.5); - break; - case TK_SCROLL_PAGES: - newY = (int) (canvasPtr->yOrigin + count * .9 - * (Tk_Height(canvasPtr->tkwin) - - 2*canvasPtr->inset)); - break; - case TK_SCROLL_UNITS: - if (canvasPtr->yScrollIncrement > 0) { - newY = canvasPtr->yOrigin - + count*canvasPtr->yScrollIncrement; - } else { - newY = (int) (canvasPtr->yOrigin + count * .1 - * (Tk_Height(canvasPtr->tkwin) - - 2*canvasPtr->inset)); - } - break; + args = TkGetStringsFromObjs(objc, objv); + type = Tk_GetScrollInfo(interp, objc, args, &fraction, &count); + if (args != NULL) { + ckfree(args); + } + switch (type) { + case TK_SCROLL_ERROR: + result = TCL_ERROR; + goto done; + case TK_SCROLL_MOVETO: + newY = canvasPtr->scrollY1 - canvasPtr->inset + (int) ( + fraction*(canvasPtr->scrollY2-canvasPtr->scrollY1) + 0.5); + break; + case TK_SCROLL_PAGES: + newY = (int) (canvasPtr->yOrigin + count * .9 + * (Tk_Height(canvasPtr->tkwin) - 2*canvasPtr->inset)); + break; + case TK_SCROLL_UNITS: + if (canvasPtr->yScrollIncrement > 0) { + newY = canvasPtr->yOrigin + count*canvasPtr->yScrollIncrement; + } else { + newY = (int) (canvasPtr->yOrigin + count * .1 + * (Tk_Height(canvasPtr->tkwin) - 2*canvasPtr->inset)); } - CanvasSetOrigin(canvasPtr, canvasPtr->xOrigin, newY); + break; } + CanvasSetOrigin(canvasPtr, canvasPtr->xOrigin, newY); break; } } @@ -2302,8 +2318,9 @@ ConfigureCanvas( return TCL_ERROR; } if (argc2 != 4) { - Tcl_AppendResult(interp, "bad scrollRegion \"", - canvasPtr->regionString, "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "bad scrollRegion \"%s\"", canvasPtr->regionString)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SCROLL_REGION", NULL); badRegion: ckfree(canvasPtr->regionString); ckfree(argv2); @@ -3583,8 +3600,10 @@ TagSearchScanExpr( case '!': /* Negate next tag or subexpr */ if (looking_for_tag > 1) { - Tcl_AppendResult(interp, - "Too many '!' in tag search expression", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "too many '!' in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "COMPLEXITY", NULL); return TCL_ERROR; } looking_for_tag++; @@ -3631,15 +3650,18 @@ TagSearchScanExpr( *tag++ = c; } if (!found_endquote) { - Tcl_AppendResult(interp, - "Missing endquote in tag search expression", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "missing endquote in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "ENDQUOTE", NULL); return TCL_ERROR; } if (!(tag - searchPtr->rewritebuffer)) { - Tcl_AppendResult(interp, - "Null quoted tag string in tag search expression", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "null quoted tag string in tag search expression", + -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "EMPTY", NULL); return TCL_ERROR; } *tag++ = '\0'; @@ -3653,9 +3675,10 @@ TagSearchScanExpr( case '|': case '^': case ')': - Tcl_AppendResult(interp, - "Unexpected operator in tag search expression", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "unexpected operator in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "UNEXPECTED", NULL); return TCL_ERROR; default: /* Unquoted tag string */ @@ -3716,8 +3739,10 @@ TagSearchScanExpr( case '&': /* AND operator */ c = searchPtr->string[searchPtr->stringIndex++]; if (c != '&') { - Tcl_AppendResult(interp, - "Singleton '&' in tag search expression", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "singleton '&' in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "INCOMPLETE_OP", NULL); return TCL_ERROR; } expr->uids[expr->index++] = searchUids->andUid; @@ -3727,8 +3752,10 @@ TagSearchScanExpr( case '|': /* OR operator */ c = searchPtr->string[searchPtr->stringIndex++]; if (c != '|') { - Tcl_AppendResult(interp, - "Singleton '|' in tag search expression", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "singleton '|' in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", + "INCOMPLETE_OP", NULL); return TCL_ERROR; } expr->uids[expr->index++] = searchUids->orUid; @@ -3745,8 +3772,10 @@ TagSearchScanExpr( goto breakwhile; default: /* syntax error */ - Tcl_AppendResult(interp, - "Invalid boolean operator in tag search expression", + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "invalid boolean operator in tag search expression", + -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", "BAD_OP", NULL); return TCL_ERROR; } @@ -3757,7 +3786,9 @@ TagSearchScanExpr( if (found_tag && !looking_for_tag) { return TCL_OK; } - Tcl_AppendResult(interp, "Missing tag in tag search expression", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "missing tag in tag search expression", -1)); + Tcl_SetErrorCode(interp, "TK", "CANVAS", "SEARCH", "NO_TAG", NULL); return TCL_ERROR; } @@ -4138,23 +4169,23 @@ 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. */ @@ -4167,10 +4198,7 @@ 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; } @@ -4257,6 +4285,7 @@ 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 @@ -4288,7 +4317,9 @@ 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; } @@ -4298,10 +4329,12 @@ 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: @@ -4311,10 +4344,10 @@ 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: { @@ -4339,8 +4372,8 @@ FindItems( return TCL_ERROR; } if (halo < 0.0) { - Tcl_AppendResult(interp, "can't have negative halo value \"", - Tcl_GetString(objv[3]), "\"", NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "can't have negative halo value \"%f\"", halo)); return TCL_ERROR; } } else { @@ -4404,7 +4437,9 @@ 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 || @@ -4442,10 +4477,16 @@ 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; } @@ -4490,6 +4531,7 @@ 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) @@ -4517,6 +4559,7 @@ 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 || @@ -4529,9 +4572,10 @@ FindArea( continue; } if (ItemOverlap(canvasPtr, itemPtr, rect) >= enclosed) { - DoItem(interp, itemPtr, uid); + DoItem(resultObj, itemPtr, uid); } } + Tcl_SetObjResult(interp, resultObj); return TCL_OK; } |