/*
* tkRectOval.c --
*
* This file implements rectangle and oval items for canvas
* widgets.
*
* Copyright (c) 1991-1994 The Regents of the University of California.
* Copyright (c) 1994-1996 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tkRectOval.c,v 1.2 1998/09/14 18:23:16 stanton Exp $
*/
#include "tkPort.h"
#include "tk.h"
#include "tkInt.h"
#include "tkCanvases.h"
/*
* The structure below defines the record for each rectangle/oval item.
*/
typedef struct RectOvalItem {
Tk_Item header; /* Generic stuff that's the same for all
* types. MUST BE FIRST IN STRUCTURE. */
Tk_Outline outline; /* Outline structure */
double bbox[4]; /* Coordinates of bounding box for rectangle
* or oval (x1, y1, x2, y2). Item includes
* x1 and x2 but not y1 and y2. */
Tk_Tile fillTile; /* Tile for filling rectangle/oval. */
Tk_Tile activeFillTile; /* Tile for filling rectangle/oval if state is active. */
Tk_Tile disabledFillTile; /* Tile for filling rectangle/oval if state is disabled. */
Tk_TSOffset tsoffset;
XColor *fillColor; /* Color for filling rectangle/oval. */
XColor *activeFillColor; /* Color for filling rectangle/oval if state is active. */
XColor *disabledFillColor; /* Color for filling rectangle/oval if state is disabled. */
Pixmap fillStipple; /* Stipple bitmap for filling item. */
Pixmap activeFillStipple; /* Stipple bitmap for filling item if state is active. */
Pixmap disabledFillStipple; /* Stipple bitmap for filling item if state is disabled. */
GC fillGC; /* Graphics context for filling item. */
} RectOvalItem;
/*
* Information used for parsing configuration specs:
*/
static Tk_CustomOption stateOption = {
Tk_StateParseProc,
Tk_StatePrintProc, (ClientData) 2
};
static Tk_CustomOption tagsOption = {
Tk_CanvasTagsParseProc,
Tk_CanvasTagsPrintProc, (ClientData) NULL
};
static Tk_CustomOption dashOption = {
Tk_CanvasDashParseProc,
Tk_CanvasDashPrintProc, (ClientData) NULL
};
static Tk_CustomOption tileOption = {
Tk_TileParseProc,
Tk_TilePrintProc, (ClientData) NULL
};
static Tk_CustomOption offsetOption = {
Tk_OffsetParseProc,
Tk_OffsetPrintProc, (ClientData) TK_OFFSET_RELATIVE
};
static Tk_CustomOption pixelOption = {
Tk_PixelParseProc,
Tk_PixelPrintProc, (ClientData) NULL
};
static Tk_ConfigSpec configSpecs[] = {
{TK_CONFIG_CUSTOM, "-activedash", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.activeDash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_COLOR, "-activefill", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, activeFillColor),
TK_CONFIG_NULL_OK},
{TK_CONFIG_COLOR, "-activeoutline", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.activeColor),
TK_CONFIG_NULL_OK},
{TK_CONFIG_BITMAP, "-activeoutlinestipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.activeStipple),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-activeoutlinetile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.activeTile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_BITMAP, "-activestipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, activeFillStipple),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-activetile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, activeFillTile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_CUSTOM, "-activewidth", (char *) NULL, (char *) NULL,
"0.0", Tk_Offset(RectOvalItem, outline.activeWidth),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_CUSTOM, "-dash", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.dash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_PIXELS, "-dashoffset", (char *) NULL, (char *) NULL,
"0", Tk_Offset(RectOvalItem, outline.offset),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_CUSTOM, "-disableddash", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.disabledDash),
TK_CONFIG_NULL_OK, &dashOption},
{TK_CONFIG_COLOR, "-disabledfill", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, disabledFillColor),
TK_CONFIG_NULL_OK},
{TK_CONFIG_COLOR, "-disabledoutline", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.disabledColor),
TK_CONFIG_NULL_OK},
{TK_CONFIG_BITMAP, "-disabledoutlinestipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.disabledStipple),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-disabledoutlinetile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.disabledTile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_BITMAP, "-disabledstipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, disabledFillStipple),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-disabledtile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, disabledFillTile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_PIXELS, "-disabledwidth", (char *) NULL, (char *) NULL,
"0.0", Tk_Offset(RectOvalItem, outline.disabledWidth),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_COLOR, "-fill", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, fillColor), TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-offset", (char *) NULL, (char *) NULL,
"0 0", Tk_Offset(RectOvalItem, tsoffset),
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption},
{TK_CONFIG_COLOR, "-outline", (char *) NULL, (char *) NULL,
"black", Tk_Offset(RectOvalItem, outline.color), TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-outlineoffset", (char *) NULL, (char *) NULL,
"0 0", Tk_Offset(RectOvalItem, outline.tsoffset),
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption},
{TK_CONFIG_BITMAP, "-outlinestipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.stipple),
TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-outlinetile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, outline.tile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_CUSTOM, "-state", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(Tk_Item, state),TK_CONFIG_NULL_OK,
&stateOption},
{TK_CONFIG_BITMAP, "-stipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, fillStipple), TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL,
(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption},
{TK_CONFIG_CUSTOM, "-tile", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(RectOvalItem, fillTile),
TK_CONFIG_NULL_OK, &tileOption},
{TK_CONFIG_CALLBACK, "-updatecommand", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(Tk_Item, updateCmd), TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-width", (char *) NULL, (char *) NULL,
"1.0", Tk_Offset(RectOvalItem, outline.width),
TK_CONFIG_DONT_SET_DEFAULT, &pixelOption},
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*
* Prototypes for procedures defined in this file:
*/
static void ComputeRectOvalBbox _ANSI_ARGS_((Tk_Canvas canvas,
RectOvalItem *rectOvalPtr));
static int ConfigureRectOval _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
char **argv, int flags));
static int CreateRectOval _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, struct Tk_Item *itemPtr,
int argc, char **argv));
static void DeleteRectOval _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, Display *display));
static void DisplayRectOval _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, Display *display, Drawable dst,
int x, int y, int width, int height));
static int OvalToArea _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *areaPtr));
static double OvalToPoint _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *pointPtr));
static int RectOvalCoords _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
char **argv));
static int RectOvalToPostscript _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int prepass));
static int RectToArea _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *areaPtr));
static double RectToPoint _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *pointPtr));
static void ScaleRectOval _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double originX, double originY,
double scaleX, double scaleY));
static void TranslateRectOval _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double deltaX, double deltaY));
/*
* The structures below defines the rectangle and oval item types
* by means of procedures that can be invoked by generic item code.
*/
Tk_ItemType tkRectangleType = {
"rectangle", /* name */
sizeof(RectOvalItem), /* itemSize */
CreateRectOval, /* createProc */
configSpecs, /* configSpecs */
ConfigureRectOval, /* configureProc */
RectOvalCoords, /* coordProc */
DeleteRectOval, /* deleteProc */
DisplayRectOval, /* displayProc */
TK_ITEM_VISITOR_SUPPORT|TK_CONFIG_OBJS,/* flags */
RectToPoint, /* pointProc */
RectToArea, /* areaProc */
RectOvalToPostscript, /* postscriptProc */
ScaleRectOval, /* scaleProc */
TranslateRectOval, /* translateProc */
(Tk_ItemIndexProc *) NULL, /* indexProc */
(Tk_ItemCursorProc *) NULL, /* icursorProc */
(Tk_ItemSelectionProc *) NULL, /* selectionProc */
(Tk_ItemInsertProc *) NULL, /* insertProc */
(Tk_ItemDCharsProc *) NULL, /* dTextProc */
(Tk_ItemType *) NULL, /* nextPtr */
(Tk_ItemBboxProc *) ComputeRectOvalBbox,/* bboxProc */
Tk_Offset(Tk_VisitorType, visitRectangle), /* acceptProc */
(Tk_ItemGetCoordProc *) NULL, /* getCoordPtr */
(Tk_ItemSetCoordProc *) NULL /* setCoordPtr */
};
Tk_ItemType tkOvalType = {
"oval", /* name */
sizeof(RectOvalItem), /* itemSize */
CreateRectOval, /* createProc */
configSpecs, /* configSpecs */
ConfigureRectOval, /* configureProc */
RectOvalCoords, /* coordProc */
DeleteRectOval, /* deleteProc */
DisplayRectOval, /* displayProc */
TK_ITEM_VISITOR_SUPPORT|TK_CONFIG_OBJS,/* flags */
OvalToPoint, /* pointProc */
OvalToArea, /* areaProc */
RectOvalToPostscript, /* postscriptProc */
ScaleRectOval, /* scaleProc */
TranslateRectOval, /* translateProc */
(Tk_ItemIndexProc *) NULL, /* indexProc */
(Tk_ItemCursorProc *) NULL, /* cursorProc */
(Tk_ItemSelectionProc *) NULL, /* selectionProc */
(Tk_ItemInsertProc *) NULL, /* insertProc */
(Tk_ItemDCharsProc *) NULL, /* dTextProc */
(Tk_ItemType *) NULL, /* nextPtr */
(Tk_ItemBboxProc *) ComputeRectOvalBbox,/* bboxProc */
Tk_Offset(Tk_VisitorType, visitOval), /* acceptProc */
(Tk_ItemGetCoordProc *) NULL, /* getCoordPtr */
(Tk_ItemSetCoordProc *) NULL /* setCoordPtr */
};
/*
*--------------------------------------------------------------
*
* CreateRectOval --
*
* This procedure is invoked to create a new rectangle
* or oval item in a canvas.
*
* Results:
* A standard Tcl return value. If an error occurred in
* creating the item, then an error message is left in
* interp->result; in this case itemPtr is left uninitialized,
* so it can be safely freed by the caller.
*
* Side effects:
* A new rectangle or oval item is created.
*
*--------------------------------------------------------------
*/
static int
CreateRectOval(interp, canvas, itemPtr, argc, argv)
Tcl_Interp *interp; /* For error reporting. */
Tk_Canvas canvas; /* Canvas to hold new item. */
Tk_Item *itemPtr; /* Record to hold new item; header
* has been initialized by caller. */
int argc; /* Number of arguments in argv. */
char **argv; /* Arguments describing rectangle. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
int i;
if (argc==1) {
i = 1;
} else {
char *arg = Tcl_GetStringFromObj(objv[1], NULL);
if ((argc>1) && (arg[0] == '-')
&& (arg[1] >= 'a') && (arg[1] <= 'z')) {
i = 1;
} else {
i = 4;
}
}
if (argc < i) {
Tcl_AppendResult(interp, "wrong # args: should be \"",
Tk_PathName(Tk_CanvasTkwin(canvas)), " create ",
itemPtr->typePtr->name, " x1 y1 x2 y2 ?options?\"",
(char *) NULL);
return TCL_ERROR;
}
/*
* Carry out initialization that is needed in order to clean
* up after errors during the the remainder of this procedure.
*/
Tk_CreateOutline(&(rectOvalPtr->outline));
rectOvalPtr->fillTile = NULL;
rectOvalPtr->activeFillTile = NULL;
rectOvalPtr->disabledFillTile = NULL;
rectOvalPtr->tsoffset.flags = 0;
rectOvalPtr->tsoffset.xoffset = 0;
rectOvalPtr->tsoffset.yoffset = 0;
rectOvalPtr->fillColor = NULL;
rectOvalPtr->activeFillColor = NULL;
rectOvalPtr->disabledFillColor = NULL;
rectOvalPtr->fillStipple = None;
rectOvalPtr->activeFillStipple = None;
rectOvalPtr->disabledFillStipple = None;
rectOvalPtr->fillGC = None;
/*
* Process the arguments to fill in the item record.
*/
if ((RectOvalCoords(interp, canvas, itemPtr, i, argv) != TCL_OK)) {
goto error;
}
if (ConfigureRectOval(interp, canvas, itemPtr, argc-i, argv+i, 0)
== TCL_OK) {
return TCL_OK;
}
error:
DeleteRectOval(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas)));
return TCL_ERROR;
}
/*
*--------------------------------------------------------------
*
* RectOvalCoords --
*
* This procedure is invoked to process the "coords" widget
* command on rectangles and ovals. See the user documentation
* for details on what it does.
*
* Results:
* Returns TCL_OK or TCL_ERROR, and sets interp->result.
*
* Side effects:
* The coordinates for the given item may be changed.
*
*--------------------------------------------------------------
*/
static int
RectOvalCoords(interp, canvas, itemPtr, argc, objv)
Tcl_Interp *interp; /* Used for error reporting. */
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item whose coordinates are to be
* read or modified. */
int argc; /* Number of coordinates supplied in
* args. */
Arg *objv; /* Array of coordinates: x1, y1,
* x2, y2, ... */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
char c0[TCL_DOUBLE_SPACE];
if (argc == 0) {
Tcl_Obj *obj = Tcl_NewListObj(0,NULL);
Tcl_Obj *subobj = Tcl_NewDoubleObj(rectOvalPtr->bbox[0]);
Tcl_ListObjAppendElement(interp, obj, subobj);
subobj = Tcl_NewDoubleObj(rectOvalPtr->bbox[1]);
Tcl_ListObjAppendElement(interp, obj, subobj);
subobj = Tcl_NewDoubleObj(rectOvalPtr->bbox[2]);
Tcl_ListObjAppendElement(interp, obj, subobj);
subobj = Tcl_NewDoubleObj(rectOvalPtr->bbox[3]);
Tcl_ListObjAppendElement(interp, obj, subobj);
Tcl_SetObjResult(interp, obj);
} else if ((argc == 1)||(argc == 4)) {
if (argc==1) {
if (Tcl_ListObjGetElements(interp, objv[0], &argc, &objv) != TCL_OK) {
return TCL_ERROR;
} else if (argc != 4) {
sprintf(c0,"%d",argc);
Tcl_AppendResult(interp, "wrong # coordinates: expected 4, got ",
c0, (char *) NULL);
return TCL_ERROR;
}
}
if ((Tk_CanvasGetCoordFromObj(interp, canvas, objv[0],
&rectOvalPtr->bbox[0]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[1],
&rectOvalPtr->bbox[1]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[2],
&rectOvalPtr->bbox[2]) != TCL_OK)
|| (Tk_CanvasGetCoordFromObj(interp, canvas, objv[3],
&rectOvalPtr->bbox[3]) != TCL_OK)) {
return TCL_ERROR;
}
ComputeRectOvalBbox(canvas, rectOvalPtr);
} else {
sprintf(c0,"%d",argc);
Tcl_AppendResult(interp, "wrong # coordinates: expected 0 or 4, got ",
c0, (char *) NULL);
return TCL_ERROR;
}
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* ConfigureRectOval --
*
* This procedure is invoked to configure various aspects
* of a rectangle or oval item, such as its border and
* background colors.
*
* Results:
* A standard Tcl result code. If an error occurs, then
* an error message is left in interp->result.
*
* Side effects:
* Configuration information, such as colors and stipple
* patterns, may be set for itemPtr.
*
*--------------------------------------------------------------
*/
static int
ConfigureRectOval(interp, canvas, itemPtr, argc, argv, flags)
Tcl_Interp *interp; /* Used for error reporting. */
Tk_Canvas canvas; /* Canvas containing itemPtr. */
Tk_Item *itemPtr; /* Rectangle item to reconfigure. */
int argc; /* Number of elements in argv. */
char **argv; /* Arguments describing things to configure. */
int flags; /* Flags to pass to Tk_ConfigureWidget. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
XGCValues gcValues;
GC newGC;
unsigned long mask;
Tk_Window tkwin;
Tk_Tile tile;
Tk_TSOffset *tsoffset;
XColor *color;
Pixmap stipple;
Tk_State state;
Pixmap pixmap;
tkwin = Tk_CanvasTkwin(canvas);
if (Tk_ConfigureWidget(interp, tkwin, configSpecs, argc, argv,
(char *) rectOvalPtr, flags|TK_CONFIG_OBJS) != TCL_OK) {
return TCL_ERROR;
}
state = Tk_GetItemState(canvas, itemPtr);
/*
* A few of the options require additional processing, such as
* graphics contexts.
*/
if (rectOvalPtr->outline.activeWidth > rectOvalPtr->outline.width ||
rectOvalPtr->outline.activeDash.number > 0 ||
rectOvalPtr->outline.activeTile != NULL ||
rectOvalPtr->outline.activeColor != NULL ||
rectOvalPtr->outline.activeStipple != None ||
rectOvalPtr->activeFillTile != NULL ||
rectOvalPtr->activeFillColor != NULL ||
rectOvalPtr->activeFillStipple != None) {
itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
} else {
itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
}
tsoffset = &rectOvalPtr->outline.tsoffset;
flags = tsoffset->flags;
if (flags & TK_OFFSET_LEFT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[0] + 0.5);
} else if (flags & TK_OFFSET_CENTER) {
tsoffset->xoffset = (int) ((rectOvalPtr->bbox[0]+rectOvalPtr->bbox[2]+1)/2);
} else if (flags & TK_OFFSET_RIGHT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
if (flags & TK_OFFSET_TOP) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[1] + 0.5);
} else if (flags & TK_OFFSET_MIDDLE) {
tsoffset->yoffset = (int) ((rectOvalPtr->bbox[1]+rectOvalPtr->bbox[3]+1)/2);
} else if (flags & TK_OFFSET_BOTTOM) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
mask = Tk_ConfigOutlineGC(&gcValues, canvas, itemPtr,
&(rectOvalPtr->outline));
if (mask) {
gcValues.cap_style = CapProjecting;
mask |= GCCapStyle;
newGC = Tk_GetGC(tkwin, mask, &gcValues);
} else {
newGC = None;
}
if (rectOvalPtr->outline.gc != None) {
Tk_FreeGC(Tk_Display(tkwin), rectOvalPtr->outline.gc);
}
rectOvalPtr->outline.gc = newGC;
if (state==TK_STATE_HIDDEN) {
ComputeRectOvalBbox(canvas, rectOvalPtr);
return TCL_OK;
}
tile = rectOvalPtr->fillTile;
color = rectOvalPtr->fillColor;
stipple = rectOvalPtr->fillStipple;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (rectOvalPtr->activeFillTile!=NULL) {
tile = rectOvalPtr->activeFillTile;
}
if (rectOvalPtr->activeFillColor!=NULL) {
color = rectOvalPtr->activeFillColor;
}
if (rectOvalPtr->activeFillStipple!=None) {
stipple = rectOvalPtr->activeFillStipple;
}
} else if (state==TK_STATE_DISABLED) {
if (rectOvalPtr->disabledFillTile!=NULL) {
tile = rectOvalPtr->disabledFillTile;
}
if (rectOvalPtr->disabledFillColor!=NULL) {
color = rectOvalPtr->disabledFillColor;
}
if (rectOvalPtr->disabledFillStipple!=None) {
stipple = rectOvalPtr->disabledFillStipple;
}
}
Tk_SetTileCanvasItem(rectOvalPtr->fillTile, canvas, (Tk_Item *) NULL);
Tk_SetTileCanvasItem(rectOvalPtr->activeFillTile, canvas, (Tk_Item *) NULL);
Tk_SetTileCanvasItem(rectOvalPtr->disabledFillTile, canvas, (Tk_Item *) NULL);
Tk_SetTileCanvasItem(tile, canvas, itemPtr);
if ((pixmap = Tk_PixmapOfTile(tile)) != None) {
gcValues.fill_style = FillTiled;
gcValues.tile = pixmap;
newGC = Tk_GetGC(tkwin, GCTile|GCFillStyle, &gcValues);
} else if (color == NULL) {
newGC = None;
} else {
gcValues.foreground = color->pixel;
if (stipple != None) {
gcValues.stipple = stipple;
gcValues.fill_style = FillStippled;
mask = GCForeground|GCStipple|GCFillStyle;
} else {
mask = GCForeground;
}
newGC = Tk_GetGC(tkwin, mask, &gcValues);
}
if (rectOvalPtr->fillGC != None) {
Tk_FreeGC(Tk_Display(tkwin), rectOvalPtr->fillGC);
}
rectOvalPtr->fillGC = newGC;
tsoffset = &rectOvalPtr->tsoffset;
flags = tsoffset->flags;
if (flags & TK_OFFSET_LEFT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[0] + 0.5);
} else if (flags & TK_OFFSET_CENTER) {
tsoffset->xoffset = (int) ((rectOvalPtr->bbox[0]+rectOvalPtr->bbox[2]+1)/2);
} else if (flags & TK_OFFSET_RIGHT) {
tsoffset->xoffset = (int) (rectOvalPtr->bbox[2] + 0.5);
}
if (flags & TK_OFFSET_TOP) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[1] + 0.5);
} else if (flags & TK_OFFSET_MIDDLE) {
tsoffset->yoffset = (int) ((rectOvalPtr->bbox[1]+rectOvalPtr->bbox[3]+1)/2);
} else if (flags & TK_OFFSET_BOTTOM) {
tsoffset->yoffset = (int) (rectOvalPtr->bbox[3] + 0.5);
}
ComputeRectOvalBbox(canvas, rectOvalPtr);
return TCL_OK;
}
/*
*--------------------------------------------------------------
*
* DeleteRectOval --
*
* This procedure is called to clean up the data structure
* associated with a rectangle or oval item.
*
* Results:
* None.
*
* Side effects:
* Resources associated with itemPtr are released.
*
*--------------------------------------------------------------
*/
static void
DeleteRectOval(canvas, itemPtr, display)
Tk_Canvas canvas; /* Info about overall widget. */
Tk_Item *itemPtr; /* Item that is being deleted. */
Display *display; /* Display containing window for
* canvas. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
Tk_DeleteOutline(display, &(rectOvalPtr->outline));
if (rectOvalPtr->fillTile != NULL) {
Tk_FreeTile(rectOvalPtr->fillTile);
}
if (rectOvalPtr->activeFillTile != NULL) {
Tk_FreeTile(rectOvalPtr->activeFillTile);
}
if (rectOvalPtr->disabledFillTile != NULL) {
Tk_FreeTile(rectOvalPtr->disabledFillTile);
}
if (rectOvalPtr->fillColor != NULL) {
Tk_FreeColor(rectOvalPtr->fillColor);
}
if (rectOvalPtr->activeFillColor != NULL) {
Tk_FreeColor(rectOvalPtr->activeFillColor);
}
if (rectOvalPtr->disabledFillColor != NULL) {
Tk_FreeColor(rectOvalPtr->disabledFillColor);
}
if (rectOvalPtr->fillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->fillStipple);
}
if (rectOvalPtr->activeFillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->activeFillStipple);
}
if (rectOvalPtr->disabledFillStipple != None) {
Tk_FreeBitmap(display, rectOvalPtr->disabledFillStipple);
}
if (rectOvalPtr->fillGC != None) {
Tk_FreeGC(display, rectOvalPtr->fillGC);
}
}
/*
*--------------------------------------------------------------
*
* ComputeRectOvalBbox --
*
* This procedure is invoked to compute the bounding box of
* all the pixels that may be drawn as part of a rectangle
* or oval.
*
* Results:
* None.
*
* Side effects:
* The fields x1, y1, x2, and y2 are updated in the header
* for itemPtr.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static void
ComputeRectOvalBbox(canvas, rectOvalPtr)
Tk_Canvas canvas; /* Canvas that contains item. */
RectOvalItem *rectOvalPtr; /* Item whose bbox is to be
* recomputed. */
{
int bloat, tmp;
double dtmp, width;
Tk_State state = Tk_GetItemState(canvas, &rectOvalPtr->header);
width = rectOvalPtr->outline.width;
if (state==TK_STATE_HIDDEN) {
rectOvalPtr->header.x1 = rectOvalPtr->header.y1 =
rectOvalPtr->header.x2 = rectOvalPtr->header.y2 = -1;
return;
}
if (((TkCanvas *)canvas)->currentItemPtr == (Tk_Item *)rectOvalPtr) {
if (rectOvalPtr->outline.activeWidth>width) {
width = rectOvalPtr->outline.activeWidth;
}
} else if (state==TK_STATE_DISABLED) {
if (rectOvalPtr->outline.disabledWidth>0) {
width = rectOvalPtr->outline.disabledWidth;
}
}
/*
* Make sure that the first coordinates are the lowest ones.
*/
if (rectOvalPtr->bbox[1] > rectOvalPtr->bbox[3]) {
double tmp;
tmp = rectOvalPtr->bbox[3];
rectOvalPtr->bbox[3] = rectOvalPtr->bbox[1];
rectOvalPtr->bbox[1] = tmp;
}
if (rectOvalPtr->bbox[0] > rectOvalPtr->bbox[2]) {
double tmp;
tmp = rectOvalPtr->bbox[2];
rectOvalPtr->bbox[2] = rectOvalPtr->bbox[0];
rectOvalPtr->bbox[0] = tmp;
}
if (rectOvalPtr->outline.gc == None) {
bloat = 0;
} else {
bloat = (int) (width+1)/2;
}
/*
* Special note: the rectangle is always drawn at least 1x1 in
* size, so round up the upper coordinates to be at least 1 unit
* greater than the lower ones.
*/
tmp = (int) ((rectOvalPtr->bbox[0] >= 0) ? rectOvalPtr->bbox[0] + .5
: rectOvalPtr->bbox[0] - .5);
rectOvalPtr->header.x1 = tmp - bloat;
tmp = (int) ((rectOvalPtr->bbox[1] >= 0) ? rectOvalPtr->bbox[1] + .5
: rectOvalPtr->bbox[1] - .5);
rectOvalPtr->header.y1 = tmp - bloat;
dtmp = rectOvalPtr->bbox[2];
if (dtmp < (rectOvalPtr->bbox[0] + 1)) {
dtmp = rectOvalPtr->bbox[0] + 1;
}
tmp = (int) ((dtmp >= 0) ? dtmp + .5 : dtmp - .5);
rectOvalPtr->header.x2 = tmp + bloat + 1;
dtmp = rectOvalPtr->bbox[3];
if (dtmp < (rectOvalPtr->bbox[1] + 1)) {
dtmp = rectOvalPtr->bbox[1] + 1;
}
tmp = (int) ((dtmp >= 0) ? dtmp + .5 : dtmp - .5);
rectOvalPtr->header.y2 = tmp + bloat + 1;
}
/*
*--------------------------------------------------------------
*
* DisplayRectOval --
*
* This procedure is invoked to draw a rectangle or oval
* item in a given drawable.
*
* Results:
* None.
*
* Side effects:
* ItemPtr is drawn in drawable using the transformation
* information in canvas.
*
*--------------------------------------------------------------
*/
static void
DisplayRectOval(canvas, itemPtr, display, drawable, x, y, width, height)
Tk_Canvas canvas; /* Canvas that contains item. */
Tk_Item *itemPtr; /* Item to be displayed. */
Display *display; /* Display on which to draw item. */
Drawable drawable; /* Pixmap or window in which to draw
* item. */
int x, y, width, height; /* Describes region of canvas that
* must be redisplayed (not used). */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
short x1, y1, x2, y2;
Tk_Tile fillTile;
Pixmap fillStipple;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
/*
* Compute the screen coordinates of the bounding box for the item.
* Make sure that the bbox is at least one pixel large, since some
* X servers will die if it isn't.
*/
Tk_CanvasDrawableCoords(canvas, rectOvalPtr->bbox[0], rectOvalPtr->bbox[1],
&x1, &y1);
Tk_CanvasDrawableCoords(canvas, rectOvalPtr->bbox[2], rectOvalPtr->bbox[3],
&x2, &y2);
if (x2 <= x1) {
x2 = x1+1;
}
if (y2 <= y1) {
y2 = y1+1;
}
/*
* Display filled part first (if wanted), then outline. If we're
* stippling, then modify the stipple offset in the GC. Be sure to
* reset the offset when done, since the GC is supposed to be
* read-only.
*/
fillTile = rectOvalPtr->fillTile;
fillStipple = rectOvalPtr->fillStipple;
if (((TkCanvas *)canvas)->currentItemPtr == (Tk_Item *)rectOvalPtr) {
if (rectOvalPtr->activeFillTile!=NULL) {
fillTile = rectOvalPtr->activeFillTile;
}
if (rectOvalPtr->activeFillStipple!=None) {
fillStipple = rectOvalPtr->activeFillStipple;
}
} else if (state==TK_STATE_DISABLED) {
if (rectOvalPtr->disabledFillTile!=NULL) {
fillTile = rectOvalPtr->disabledFillTile;
}
if (rectOvalPtr->disabledFillStipple!=None) {
fillStipple = rectOvalPtr->disabledFillStipple;
}
}
if (rectOvalPtr->fillGC != None) {
if ((fillTile != NULL) || (fillStipple != None)) {
Tk_TSOffset *tsoffset;
int w=0; int h=0;
tsoffset = &rectOvalPtr->tsoffset;
if (tsoffset) {
int flags = tsoffset->flags;
if (flags & (TK_OFFSET_CENTER|TK_OFFSET_MIDDLE)) {
if (fillTile != NULL) {
Tk_SizeOfTile(fillTile, &w, &h);
} else {
Tk_SizeOfBitmap(display, fillStipple, &w, &h);
}
if (flags & TK_OFFSET_CENTER) {
w /= 2;
} else {
w = 0;
}
if (flags & TK_OFFSET_MIDDLE) {
h /= 2;
} else {
h = 0;
}
}
tsoffset->xoffset -= w;
tsoffset->yoffset -= h;
}
Tk_CanvasSetOffset(canvas, rectOvalPtr->fillGC, tsoffset);
if (tsoffset) {
tsoffset->xoffset += w;
tsoffset->yoffset += h;
}
}
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
XFillRectangle(display, drawable, rectOvalPtr->fillGC,
x1, y1, (unsigned int) (x2-x1), (unsigned int) (y2-y1));
} else {
XFillArc(display, drawable, rectOvalPtr->fillGC,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1),
0, 360*64);
}
if ((fillTile != NULL) || (fillStipple != None)) {
XSetTSOrigin(display, rectOvalPtr->fillGC, 0, 0);
}
}
if (rectOvalPtr->outline.gc != None) {
Tk_ChangeOutlineGC(canvas, itemPtr, &(rectOvalPtr->outline));
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
XDrawRectangle(display, drawable, rectOvalPtr->outline.gc,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1));
} else {
XDrawArc(display, drawable, rectOvalPtr->outline.gc,
x1, y1, (unsigned) (x2-x1), (unsigned) (y2-y1), 0, 360*64);
}
Tk_ResetOutlineGC(canvas, itemPtr, &(rectOvalPtr->outline));
}
}
/*
*--------------------------------------------------------------
*
* RectToPoint --
*
* Computes the distance from a given point to a given
* rectangle, in canvas units.
*
* Results:
* The return value is 0 if the point whose x and y coordinates
* are coordPtr[0] and coordPtr[1] is inside the rectangle. If the
* point isn't inside the rectangle then the return value is the
* distance from the point to the rectangle. If itemPtr is filled,
* then anywhere in the interior is considered "inside"; if
* itemPtr isn't filled, then "inside" means only the area
* occupied by the outline.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static double
RectToPoint(canvas, itemPtr, pointPtr)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item to check against point. */
double *pointPtr; /* Pointer to x and y coordinates. */
{
RectOvalItem *rectPtr = (RectOvalItem *) itemPtr;
double xDiff, yDiff, x1, y1, x2, y2, inc, tmp;
double width;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
width = rectPtr->outline.width;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (rectPtr->outline.activeWidth>width) {
width = rectPtr->outline.activeWidth;
}
} else if (state==TK_STATE_DISABLED) {
if (rectPtr->outline.disabledWidth>0) {
width = rectPtr->outline.disabledWidth;
}
}
/*
* Generate a new larger rectangle that includes the border
* width, if there is one.
*/
x1 = rectPtr->bbox[0];
y1 = rectPtr->bbox[1];
x2 = rectPtr->bbox[2];
y2 = rectPtr->bbox[3];
if (rectPtr->outline.gc != None) {
inc = width/2.0;
x1 -= inc;
y1 -= inc;
x2 += inc;
y2 += inc;
}
/*
* If the point is inside the rectangle, handle specially:
* distance is 0 if rectangle is filled, otherwise compute
* distance to nearest edge of rectangle and subtract width
* of edge.
*/
if ((pointPtr[0] >= x1) && (pointPtr[0] < x2)
&& (pointPtr[1] >= y1) && (pointPtr[1] < y2)) {
if ((rectPtr->fillGC != None) || (rectPtr->outline.gc == None)) {
return 0.0;
}
xDiff = pointPtr[0] - x1;
tmp = x2 - pointPtr[0];
if (tmp < xDiff) {
xDiff = tmp;
}
yDiff = pointPtr[1] - y1;
tmp = y2 - pointPtr[1];
if (tmp < yDiff) {
yDiff = tmp;
}
if (yDiff < xDiff) {
xDiff = yDiff;
}
xDiff -= width;
if (xDiff < 0.0) {
return 0.0;
}
return xDiff;
}
/*
* Point is outside rectangle.
*/
if (pointPtr[0] < x1) {
xDiff = x1 - pointPtr[0];
} else if (pointPtr[0] > x2) {
xDiff = pointPtr[0] - x2;
} else {
xDiff = 0;
}
if (pointPtr[1] < y1) {
yDiff = y1 - pointPtr[1];
} else if (pointPtr[1] > y2) {
yDiff = pointPtr[1] - y2;
} else {
yDiff = 0;
}
return hypot(xDiff, yDiff);
}
/*
*--------------------------------------------------------------
*
* OvalToPoint --
*
* Computes the distance from a given point to a given
* oval, in canvas units.
*
* Results:
* The return value is 0 if the point whose x and y coordinates
* are coordPtr[0] and coordPtr[1] is inside the oval. If the
* point isn't inside the oval then the return value is the
* distance from the point to the oval. If itemPtr is filled,
* then anywhere in the interior is considered "inside"; if
* itemPtr isn't filled, then "inside" means only the area
* occupied by the outline.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static double
OvalToPoint(canvas, itemPtr, pointPtr)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item to check against point. */
double *pointPtr; /* Pointer to x and y coordinates. */
{
RectOvalItem *ovalPtr = (RectOvalItem *) itemPtr;
double width;
int filled;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
width = (double) ovalPtr->outline.width;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (ovalPtr->outline.activeWidth>width) {
width = (double) ovalPtr->outline.activeWidth;
}
} else if (state==TK_STATE_DISABLED) {
if (ovalPtr->outline.disabledWidth>0) {
width = (double) ovalPtr->outline.disabledWidth;
}
}
filled = ovalPtr->fillGC != None;
if (ovalPtr->outline.gc == None) {
width = 0.0;
filled = 1;
}
return TkOvalToPoint(ovalPtr->bbox, width, filled, pointPtr);
}
/*
*--------------------------------------------------------------
*
* RectToArea --
*
* This procedure is called to determine whether an item
* lies entirely inside, entirely outside, or overlapping
* a given rectangle.
*
* Results:
* -1 is returned if the item is entirely outside the area
* given by rectPtr, 0 if it overlaps, and 1 if it is entirely
* inside the given area.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static int
RectToArea(canvas, itemPtr, areaPtr)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item to check against rectangle. */
double *areaPtr; /* Pointer to array of four coordinates
* (x1, y1, x2, y2) describing rectangular
* area. */
{
RectOvalItem *rectPtr = (RectOvalItem *) itemPtr;
double halfWidth;
double width;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
width = rectPtr->outline.width;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (rectPtr->outline.activeWidth>width) {
width = rectPtr->outline.activeWidth;
}
} else if (state==TK_STATE_DISABLED) {
if (rectPtr->outline.disabledWidth>0) {
width = rectPtr->outline.disabledWidth;
}
}
halfWidth = width/2.0;
if (rectPtr->outline.gc == None) {
halfWidth = 0.0;
}
if ((areaPtr[2] <= (rectPtr->bbox[0] - halfWidth))
|| (areaPtr[0] >= (rectPtr->bbox[2] + halfWidth))
|| (areaPtr[3] <= (rectPtr->bbox[1] - halfWidth))
|| (areaPtr[1] >= (rectPtr->bbox[3] + halfWidth))) {
return -1;
}
if ((rectPtr->fillGC == None) && (rectPtr->outline.gc != None)
&& (areaPtr[0] >= (rectPtr->bbox[0] + halfWidth))
&& (areaPtr[1] >= (rectPtr->bbox[1] + halfWidth))
&& (areaPtr[2] <= (rectPtr->bbox[2] - halfWidth))
&& (areaPtr[3] <= (rectPtr->bbox[3] - halfWidth))) {
return -1;
}
if ((areaPtr[0] <= (rectPtr->bbox[0] - halfWidth))
&& (areaPtr[1] <= (rectPtr->bbox[1] - halfWidth))
&& (areaPtr[2] >= (rectPtr->bbox[2] + halfWidth))
&& (areaPtr[3] >= (rectPtr->bbox[3] + halfWidth))) {
return 1;
}
return 0;
}
/*
*--------------------------------------------------------------
*
* OvalToArea --
*
* This procedure is called to determine whether an item
* lies entirely inside, entirely outside, or overlapping
* a given rectangular area.
*
* Results:
* -1 is returned if the item is entirely outside the area
* given by rectPtr, 0 if it overlaps, and 1 if it is entirely
* inside the given area.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/* ARGSUSED */
static int
OvalToArea(canvas, itemPtr, areaPtr)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item to check against oval. */
double *areaPtr; /* Pointer to array of four coordinates
* (x1, y1, x2, y2) describing rectangular
* area. */
{
RectOvalItem *ovalPtr = (RectOvalItem *) itemPtr;
double oval[4], halfWidth;
int result;
double width;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
width = ovalPtr->outline.width;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (ovalPtr->outline.activeWidth>width) {
width = ovalPtr->outline.activeWidth;
}
} else if (state==TK_STATE_DISABLED) {
if (ovalPtr->outline.disabledWidth>0) {
width = ovalPtr->outline.disabledWidth;
}
}
/*
* Expand the oval to include the width of the outline, if any.
*/
halfWidth = width/2.0;
if (ovalPtr->outline.gc == None) {
halfWidth = 0.0;
}
oval[0] = ovalPtr->bbox[0] - halfWidth;
oval[1] = ovalPtr->bbox[1] - halfWidth;
oval[2] = ovalPtr->bbox[2] + halfWidth;
oval[3] = ovalPtr->bbox[3] + halfWidth;
result = TkOvalToArea(oval, areaPtr);
/*
* If the rectangle appears to overlap the oval and the oval
* isn't filled, do one more check to see if perhaps all four
* of the rectangle's corners are totally inside the oval's
* unfilled center, in which case we should return "outside".
*/
if ((result == 0) && (ovalPtr->outline.gc != None)
&& (ovalPtr->fillGC == None)) {
double centerX, centerY, height;
double xDelta1, yDelta1, xDelta2, yDelta2;
centerX = (ovalPtr->bbox[0] + ovalPtr->bbox[2])/2.0;
centerY = (ovalPtr->bbox[1] + ovalPtr->bbox[3])/2.0;
width = (ovalPtr->bbox[2] - ovalPtr->bbox[0])/2.0 - halfWidth;
height = (ovalPtr->bbox[3] - ovalPtr->bbox[1])/2.0 - halfWidth;
xDelta1 = (areaPtr[0] - centerX)/width;
xDelta1 *= xDelta1;
yDelta1 = (areaPtr[1] - centerY)/height;
yDelta1 *= yDelta1;
xDelta2 = (areaPtr[2] - centerX)/width;
xDelta2 *= xDelta2;
yDelta2 = (areaPtr[3] - centerY)/height;
yDelta2 *= yDelta2;
if (((xDelta1 + yDelta1) < 1.0)
&& ((xDelta1 + yDelta2) < 1.0)
&& ((xDelta2 + yDelta1) < 1.0)
&& ((xDelta2 + yDelta2) < 1.0)) {
return -1;
}
}
return result;
}
/*
*--------------------------------------------------------------
*
* ScaleRectOval --
*
* This procedure is invoked to rescale a rectangle or oval
* item.
*
* Results:
* None.
*
* Side effects:
* The rectangle or oval referred to by itemPtr is rescaled
* so that the following transformation is applied to all
* point coordinates:
* x' = originX + scaleX*(x-originX)
* y' = originY + scaleY*(y-originY)
*
*--------------------------------------------------------------
*/
static void
ScaleRectOval(canvas, itemPtr, originX, originY, scaleX, scaleY)
Tk_Canvas canvas; /* Canvas containing rectangle. */
Tk_Item *itemPtr; /* Rectangle to be scaled. */
double originX, originY; /* Origin about which to scale rect. */
double scaleX; /* Amount to scale in X direction. */
double scaleY; /* Amount to scale in Y direction. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
rectOvalPtr->bbox[0] = originX + scaleX*(rectOvalPtr->bbox[0] - originX);
rectOvalPtr->bbox[1] = originY + scaleY*(rectOvalPtr->bbox[1] - originY);
rectOvalPtr->bbox[2] = originX + scaleX*(rectOvalPtr->bbox[2] - originX);
rectOvalPtr->bbox[3] = originY + scaleY*(rectOvalPtr->bbox[3] - originY);
ComputeRectOvalBbox(canvas, rectOvalPtr);
}
/*
*--------------------------------------------------------------
*
* TranslateRectOval --
*
* This procedure is called to move a rectangle or oval by a
* given amount.
*
* Results:
* None.
*
* Side effects:
* The position of the rectangle or oval is offset by
* (xDelta, yDelta), and the bounding box is updated in the
* generic part of the item structure.
*
*--------------------------------------------------------------
*/
static void
TranslateRectOval(canvas, itemPtr, deltaX, deltaY)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item that is being moved. */
double deltaX, deltaY; /* Amount by which item is to be
* moved. */
{
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
rectOvalPtr->bbox[0] += deltaX;
rectOvalPtr->bbox[1] += deltaY;
rectOvalPtr->bbox[2] += deltaX;
rectOvalPtr->bbox[3] += deltaY;
ComputeRectOvalBbox(canvas, rectOvalPtr);
}
/*
*--------------------------------------------------------------
*
* RectOvalToPostscript --
*
* This procedure is called to generate Postscript for
* rectangle and oval items.
*
* Results:
* The return value is a standard Tcl result. If an error
* occurs in generating Postscript then an error message is
* left in interp->result, replacing whatever used to be there.
* If no error occurs, then Postscript for the rectangle is
* appended to the result.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
static int
RectOvalToPostscript(interp, canvas, itemPtr, prepass)
Tcl_Interp *interp; /* Interpreter for error reporting. */
Tk_Canvas canvas; /* Information about overall canvas. */
Tk_Item *itemPtr; /* Item for which Postscript is
* wanted. */
int prepass; /* 1 means this is a prepass to
* collect font information; 0 means
* final Postscript is being created. */
{
char pathCmd[500];
RectOvalItem *rectOvalPtr = (RectOvalItem *) itemPtr;
double y1, y2;
Tk_Tile tile;
XColor *color;
Tk_Tile fillTile;
XColor *fillColor;
Pixmap fillStipple;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
y1 = Tk_CanvasPsY(canvas, rectOvalPtr->bbox[1]);
y2 = Tk_CanvasPsY(canvas, rectOvalPtr->bbox[3]);
/*
* Generate a string that creates a path for the rectangle or oval.
* This is the only part of the procedure's code that is type-
* specific.
*/
if (rectOvalPtr->header.typePtr == &tkRectangleType) {
sprintf(pathCmd, "%.15g %.15g moveto %.15g 0 rlineto 0 %.15g rlineto %.15g 0 rlineto closepath\n",
rectOvalPtr->bbox[0], y1,
rectOvalPtr->bbox[2]-rectOvalPtr->bbox[0], y2-y1,
rectOvalPtr->bbox[0]-rectOvalPtr->bbox[2]);
} else {
sprintf(pathCmd, "matrix currentmatrix\n%.15g %.15g translate %.15g %.15g scale 1 0 moveto 0 0 1 0 360 arc\nsetmatrix\n",
(rectOvalPtr->bbox[0] + rectOvalPtr->bbox[2])/2, (y1 + y2)/2,
(rectOvalPtr->bbox[2] - rectOvalPtr->bbox[0])/2, (y1 - y2)/2);
}
tile = rectOvalPtr->outline.tile;
color = rectOvalPtr->outline.color;
fillTile = rectOvalPtr->fillTile;
fillColor = rectOvalPtr->fillColor;
fillStipple = rectOvalPtr->fillStipple;
if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) {
if (rectOvalPtr->outline.activeTile!=NULL) {
tile = rectOvalPtr->outline.activeTile;
}
if (rectOvalPtr->outline.activeColor!=NULL) {
color = rectOvalPtr->outline.activeColor;
}
if (rectOvalPtr->activeFillTile!=NULL) {
fillTile = rectOvalPtr->activeFillTile;
}
if (rectOvalPtr->activeFillColor!=NULL) {
fillColor = rectOvalPtr->activeFillColor;
}
if (rectOvalPtr->activeFillStipple!=None) {
fillStipple = rectOvalPtr->activeFillStipple;
}
} else if (state==TK_STATE_DISABLED) {
if (rectOvalPtr->outline.disabledTile!=NULL) {
tile = rectOvalPtr->outline.disabledTile;
}
if (rectOvalPtr->outline.disabledColor!=NULL) {
color = rectOvalPtr->outline.disabledColor;
}
if (rectOvalPtr->disabledFillTile!=NULL) {
fillTile = rectOvalPtr->disabledFillTile;
}
if (rectOvalPtr->disabledFillColor!=NULL) {
fillColor = rectOvalPtr->disabledFillColor;
}
if (rectOvalPtr->disabledFillStipple!=None) {
fillStipple = rectOvalPtr->disabledFillStipple;
}
}
/*
* First draw the filled area of the rectangle.
*/
if (fillColor != NULL) {
Tcl_AppendResult(interp, pathCmd, (char *) NULL);
if (Tk_CanvasPsColor(interp, canvas, fillColor)
!= TCL_OK) {
return TCL_ERROR;
}
if (fillStipple != None) {
Tcl_AppendResult(interp, "clip ", (char *) NULL);
if (Tk_CanvasPsStipple(interp, canvas, fillStipple)
!= TCL_OK) {
return TCL_ERROR;
}
if (color != NULL) {
Tcl_AppendResult(interp, "grestore gsave\n", (char *) NULL);
}
} else {
Tcl_AppendResult(interp, "fill\n", (char *) NULL);
}
}
/*
* Now draw the outline, if there is one.
*/
if (color != NULL) {
Tcl_AppendResult(interp, pathCmd, "0 setlinejoin 2 setlinecap\n",
(char *) NULL);
if (Tk_CanvasPsOutline(canvas, itemPtr,
&(rectOvalPtr->outline))!= TCL_OK) {
return TCL_ERROR;
}
}
return TCL_OK;
}