Context Navigation

← Previous Revision
Latest Revision
Next Revision →
Normal
Revision Log

bltGraph.c@ 187

Last change on this file since 187 was 175, checked in by demin, 12 years ago
initial commit
File size: 72.2 KB

Rev	Line
[175]	1
	2	/*
	3	* bltGraph.c --
	4	*
	5	* This module implements a graph widget for the BLT toolkit.
	6	*
	7	* Copyright 1991-1998 Lucent Technologies, Inc.
	8	*
	9	* Permission to use, copy, modify, and distribute this software and
	10	* its documentation for any purpose and without fee is hereby
	11	* granted, provided that the above copyright notice appear in all
	12	* copies and that both that the copyright notice and warranty
	13	* disclaimer appear in supporting documentation, and that the names
	14	* of Lucent Technologies any of their entities not be used in
	15	* advertising or publicity pertaining to distribution of the software
	16	* without specific, written prior permission.
	17	*
	18	* Lucent Technologies disclaims all warranties with regard to this
	19	* software, including all implied warranties of merchantability and
	20	* fitness. In no event shall Lucent Technologies be liable for any
	21	* special, indirect or consequential damages or any damages
	22	* whatsoever resulting from loss of use, data or profits, whether in
	23	* an action of contract, negligence or other tortuous action, arising
	24	* out of or in connection with the use or performance of this
	25	* software.
	26	*
	27	* The graph widget was created by Sani Nassif and George Howlett.
	28	*/
	29
	30	/*
	31	* To do:
	32	*
	33	* 2) Update manual pages.
	34	*
	35	* 3) Update comments.
	36	*
	37	* 5) Surface, contour, and flow graphs
	38	*
	39	* 7) Arrows for line markers
	40	*
	41	*/
	42
	43	#include "bltGraph.h"
	44	#include "bltBind.h"
	45	#include "bltGrElem.h"
	46	#include "bltSwitch.h"
	47	#include <X11/Xutil.h>
	48
	49	Blt_Uid bltXAxisUid;
	50	Blt_Uid bltYAxisUid;
	51	Blt_Uid bltBarElementUid;
	52	Blt_Uid bltLineElementUid;
	53	Blt_Uid bltStripElementUid;
	54	Blt_Uid bltContourElementUid;
	55	Blt_Uid bltLineMarkerUid;
	56	Blt_Uid bltBitmapMarkerUid;
	57	Blt_Uid bltImageMarkerUid;
	58	Blt_Uid bltTextMarkerUid;
	59	Blt_Uid bltPolygonMarkerUid;
	60	Blt_Uid bltWindowMarkerUid;
	61
	62	extern Tk_CustomOption bltLinePenOption;
	63	extern Tk_CustomOption bltBarPenOption;
	64	extern Tk_CustomOption bltDistanceOption;
	65	extern Tk_CustomOption bltBarModeOption;
	66	extern Tk_CustomOption bltPadOption;
	67	extern Tk_CustomOption bltTileOption;
	68	extern Tk_CustomOption bltShadowOption;
	69
	70	#define DEF_GRAPH_ASPECT_RATIO "0.0"
	71	#define DEF_GRAPH_BAR_BASELINE "0.0"
	72	#define DEF_GRAPH_BAR_MODE "normal"
	73	#define DEF_GRAPH_BAR_WIDTH "0.8"
	74	#define DEF_GRAPH_BACKGROUND STD_NORMAL_BACKGROUND
	75	#define DEF_GRAPH_BG_MONO STD_NORMAL_BG_MONO
	76	#define DEF_GRAPH_BORDERWIDTH STD_BORDERWIDTH
	77	#define DEF_GRAPH_BUFFER_ELEMENTS "1"
	78	#define DEF_GRAPH_BUFFER_GRAPH "1"
	79	#define DEF_GRAPH_CURSOR "crosshair"
	80	#define DEF_GRAPH_FONT STD_FONT_LARGE
	81	#define DEF_GRAPH_HALO "2m"
	82	#define DEF_GRAPH_HALO_BAR "0.1i"
	83	#define DEF_GRAPH_HEIGHT "4i"
	84	#define DEF_GRAPH_HIGHLIGHT_BACKGROUND STD_NORMAL_BACKGROUND
	85	#define DEF_GRAPH_HIGHLIGHT_BG_MONO STD_NORMAL_BG_MONO
	86	#define DEF_GRAPH_HIGHLIGHT_COLOR RGB_BLACK
	87	#define DEF_GRAPH_HIGHLIGHT_WIDTH "2"
	88	#define DEF_GRAPH_INVERT_XY "0"
	89	#define DEF_GRAPH_JUSTIFY "center"
	90	#define DEF_GRAPH_MARGIN "0"
	91	#define DEF_GRAPH_MARGIN_VAR (char *)NULL
	92	#define DEF_GRAPH_PLOT_BACKGROUND RGB_WHITE
	93	#define DEF_GRAPH_PLOT_BG_MONO RGB_WHITE
	94	#define DEF_GRAPH_PLOT_BW_COLOR STD_BORDERWIDTH
	95	#define DEF_GRAPH_PLOT_BW_MONO "0"
	96	#define DEF_GRAPH_PLOT_PADX "8"
	97	#define DEF_GRAPH_PLOT_PADY "8"
	98	#define DEF_GRAPH_PLOT_RELIEF "sunken"
	99	#define DEF_GRAPH_RELIEF "flat"
	100	#define DEF_GRAPH_SHADOW_COLOR (char *)NULL
	101	#define DEF_GRAPH_SHADOW_MONO (char *)NULL
	102	#define DEF_GRAPH_SHOW_VALUES "no"
	103	#define DEF_GRAPH_TAKE_FOCUS ""
	104	#define DEF_GRAPH_TITLE (char *)NULL
	105	#define DEF_GRAPH_TITLE_COLOR STD_NORMAL_FOREGROUND
	106	#define DEF_GRAPH_TITLE_MONO STD_NORMAL_FG_MONO
	107	#define DEF_GRAPH_WIDTH "5i"
	108	#define DEF_GRAPH_DATA (char *)NULL
	109	#define DEF_GRAPH_DATA_COMMAND (char *)NULL
	110
	111	static Tk_ConfigSpec configSpecs[] =
	112	{
	113	{TK_CONFIG_DOUBLE, "-aspect", "aspect", "Aspect",
	114	DEF_GRAPH_ASPECT_RATIO, Tk_Offset(Graph, aspect),
	115	TK_CONFIG_DONT_SET_DEFAULT},
	116	{TK_CONFIG_BORDER, "-background", "background", "Background",
	117	DEF_GRAPH_BACKGROUND, Tk_Offset(Graph, border),
	118	TK_CONFIG_COLOR_ONLY},
	119	{TK_CONFIG_BORDER, "-background", "background", "Background",
	120	DEF_GRAPH_BG_MONO, Tk_Offset(Graph, border),
	121	TK_CONFIG_MONO_ONLY},
	122	{TK_CONFIG_CUSTOM, "-barmode", "barMode", "BarMode",
	123	DEF_GRAPH_BAR_MODE, Tk_Offset(Graph, mode),
	124	TK_CONFIG_DONT_SET_DEFAULT, &bltBarModeOption},
	125	{TK_CONFIG_DOUBLE, "-barwidth", "barWidth", "BarWidth",
	126	DEF_GRAPH_BAR_WIDTH, Tk_Offset(Graph, barWidth), 0},
	127	{TK_CONFIG_DOUBLE, "-baseline", "baseline", "Baseline",
	128	DEF_GRAPH_BAR_BASELINE, Tk_Offset(Graph, baseline), 0},
	129	{TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char )NULL, (char )NULL, 0, 0},
	130	{TK_CONFIG_SYNONYM, "-bg", "background", (char )NULL, (char )NULL, 0, 0},
	131	{TK_CONFIG_SYNONYM, "-bm", "bottomMargin",
	132	(char )NULL, (char )NULL, 0, 0},
	133	{TK_CONFIG_CUSTOM, "-borderwidth", "borderWidth", "BorderWidth",
	134	DEF_GRAPH_BORDERWIDTH, Tk_Offset(Graph, borderWidth),
	135	TK_CONFIG_DONT_SET_DEFAULT, &bltDistanceOption},
	136	{TK_CONFIG_CUSTOM, "-bottommargin", "bottomMargin", "Margin",
	137	DEF_GRAPH_MARGIN, Tk_Offset(Graph, bottomMargin.reqSize), 0,
	138	&bltDistanceOption},
	139	{TK_CONFIG_STRING, "-bottomvariable", "bottomVariable", "BottomVariable",
	140	DEF_GRAPH_MARGIN_VAR, Tk_Offset(Graph, bottomMargin.varName),
	141	TK_CONFIG_NULL_OK},
	142	{TK_CONFIG_BOOLEAN, "-bufferelements", "bufferElements", "BufferElements",
	143	DEF_GRAPH_BUFFER_ELEMENTS, Tk_Offset(Graph, backingStore),
	144	TK_CONFIG_DONT_SET_DEFAULT},
	145	{TK_CONFIG_BOOLEAN, "-buffergraph", "bufferGraph", "BufferGraph",
	146	DEF_GRAPH_BUFFER_GRAPH, Tk_Offset(Graph, doubleBuffer),
	147	TK_CONFIG_DONT_SET_DEFAULT},
	148	{TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
	149	DEF_GRAPH_CURSOR, Tk_Offset(Graph, cursor), TK_CONFIG_NULL_OK},
	150	{TK_CONFIG_STRING, "-data", "data", "Data",
	151	(char *)NULL, Tk_Offset(Graph, data), TK_CONFIG_DONT_SET_DEFAULT},
	152	{TK_CONFIG_STRING, "-datacommand", "dataCommand", "DataCommand",
	153	(char *)NULL, Tk_Offset(Graph, dataCmd), TK_CONFIG_DONT_SET_DEFAULT},
	154	{TK_CONFIG_SYNONYM, "-fg", "foreground", (char )NULL, (char )NULL, 0, 0},
	155	{TK_CONFIG_FONT, "-font", "font", "Font",
	156	DEF_GRAPH_FONT, Tk_Offset(Graph, titleTextStyle.font), 0},
	157	{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
	158	DEF_GRAPH_TITLE_COLOR, Tk_Offset(Graph, titleTextStyle.color),
	159	TK_CONFIG_COLOR_ONLY},
	160	{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
	161	DEF_GRAPH_TITLE_MONO, Tk_Offset(Graph, titleTextStyle.color),
	162	TK_CONFIG_MONO_ONLY},
	163	{TK_CONFIG_CUSTOM, "-halo", "halo", "Halo",
	164	DEF_GRAPH_HALO, Tk_Offset(Graph, halo), 0, &bltDistanceOption},
	165	{TK_CONFIG_CUSTOM, "-height", "height", "Height",
	166	DEF_GRAPH_HEIGHT, Tk_Offset(Graph, reqHeight), 0, &bltDistanceOption},
	167	{TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
	168	"HighlightBackground",
	169	DEF_GRAPH_HIGHLIGHT_BACKGROUND, Tk_Offset(Graph, highlightBgColor),
	170	TK_CONFIG_COLOR_ONLY},
	171	{TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
	172	"HighlightBackground",
	173	DEF_GRAPH_HIGHLIGHT_BG_MONO, Tk_Offset(Graph, highlightBgColor),
	174	TK_CONFIG_MONO_ONLY},
	175	{TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
	176	DEF_GRAPH_HIGHLIGHT_COLOR, Tk_Offset(Graph, highlightColor), 0},
	177	{TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
	178	"HighlightThickness",
	179	DEF_GRAPH_HIGHLIGHT_WIDTH, Tk_Offset(Graph, highlightWidth),
	180	TK_CONFIG_DONT_SET_DEFAULT},
	181	{TK_CONFIG_BOOLEAN, "-invertxy", "invertXY", "InvertXY",
	182	DEF_GRAPH_INVERT_XY, Tk_Offset(Graph, inverted),
	183	TK_CONFIG_DONT_SET_DEFAULT},
	184	{TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
	185	DEF_GRAPH_JUSTIFY, Tk_Offset(Graph, titleTextStyle.justify),
	186	TK_CONFIG_DONT_SET_DEFAULT},
	187	{TK_CONFIG_CUSTOM, "-leftmargin", "leftMargin", "Margin",
	188	DEF_GRAPH_MARGIN, Tk_Offset(Graph, leftMargin.reqSize),
	189	TK_CONFIG_DONT_SET_DEFAULT, &bltDistanceOption},
	190	{TK_CONFIG_STRING, "-leftvariable", "leftVariable", "LeftVariable",
	191	DEF_GRAPH_MARGIN_VAR, Tk_Offset(Graph, leftMargin.varName),
	192	TK_CONFIG_NULL_OK},
	193	{TK_CONFIG_SYNONYM, "-lm", "leftMargin", (char )NULL, (char )NULL, 0, 0},
	194	{TK_CONFIG_COLOR, "-plotbackground", "plotBackground", "Background",
	195	DEF_GRAPH_PLOT_BG_MONO, Tk_Offset(Graph, plotBg),
	196	TK_CONFIG_MONO_ONLY},
	197	{TK_CONFIG_COLOR, "-plotbackground", "plotBackground", "Background",
	198	DEF_GRAPH_PLOT_BACKGROUND, Tk_Offset(Graph, plotBg),
	199	TK_CONFIG_COLOR_ONLY},
	200	{TK_CONFIG_CUSTOM, "-plotborderwidth", "plotBorderWidth", "BorderWidth",
	201	DEF_GRAPH_PLOT_BW_COLOR, Tk_Offset(Graph, plotBorderWidth),
	202	TK_CONFIG_COLOR_ONLY, &bltDistanceOption},
	203	{TK_CONFIG_CUSTOM, "-plotborderwidth", "plotBorderWidth", "BorderWidth",
	204	DEF_GRAPH_PLOT_BW_MONO, Tk_Offset(Graph, plotBorderWidth),
	205	TK_CONFIG_MONO_ONLY, &bltDistanceOption},
	206	{TK_CONFIG_CUSTOM, "-plotpadx", "plotPadX", "PlotPad",
	207	DEF_GRAPH_PLOT_PADX, Tk_Offset(Graph, padX),
	208	TK_CONFIG_DONT_SET_DEFAULT, &bltPadOption},
	209	{TK_CONFIG_CUSTOM, "-plotpady", "plotPadY", "PlotPad",
	210	DEF_GRAPH_PLOT_PADY, Tk_Offset(Graph, padY),
	211	TK_CONFIG_DONT_SET_DEFAULT, &bltPadOption},
	212	{TK_CONFIG_RELIEF, "-plotrelief", "plotRelief", "Relief",
	213	DEF_GRAPH_PLOT_RELIEF, Tk_Offset(Graph, plotRelief),
	214	TK_CONFIG_DONT_SET_DEFAULT},
	215	{TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
	216	DEF_GRAPH_RELIEF, Tk_Offset(Graph, relief), TK_CONFIG_DONT_SET_DEFAULT},
	217	{TK_CONFIG_CUSTOM, "-rightmargin", "rightMargin", "Margin",
	218	DEF_GRAPH_MARGIN, Tk_Offset(Graph, rightMargin.reqSize),
	219	TK_CONFIG_DONT_SET_DEFAULT, &bltDistanceOption},
	220	{TK_CONFIG_STRING, "-rightvariable", "rightVariable", "RightVariable",
	221	DEF_GRAPH_MARGIN_VAR, Tk_Offset(Graph, rightMargin.varName),
	222	TK_CONFIG_NULL_OK},
	223	{TK_CONFIG_SYNONYM, "-rm", "rightMargin", (char )NULL, (char )NULL, 0, 0},
	224	{TK_CONFIG_CUSTOM, "-shadow", "shadow", "Shadow",
	225	DEF_GRAPH_SHADOW_COLOR, Tk_Offset(Graph, titleTextStyle.shadow),
	226	TK_CONFIG_COLOR_ONLY, &bltShadowOption},
	227	{TK_CONFIG_CUSTOM, "-shadow", "shadow", "Shadow",
	228	DEF_GRAPH_SHADOW_MONO, Tk_Offset(Graph, titleTextStyle.shadow),
	229	TK_CONFIG_MONO_ONLY, &bltShadowOption},
	230	{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
	231	DEF_GRAPH_TITLE_MONO, Tk_Offset(Graph, titleTextStyle.color),
	232	TK_CONFIG_MONO_ONLY},
	233	{TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
	234	DEF_GRAPH_TAKE_FOCUS, Tk_Offset(Graph, takeFocus), TK_CONFIG_NULL_OK},
	235	{TK_CONFIG_CUSTOM, "-tile", "tile", "Tile",
	236	(char *)NULL, Tk_Offset(Graph, tile),
	237	TK_CONFIG_NULL_OK, &bltTileOption},
	238	{TK_CONFIG_STRING, "-title", "title", "Title",
	239	DEF_GRAPH_TITLE, Tk_Offset(Graph, title), TK_CONFIG_NULL_OK},
	240	{TK_CONFIG_SYNONYM, "-tm", "topMargin", (char )NULL, (char )NULL, 0, 0},
	241	{TK_CONFIG_CUSTOM, "-topmargin", "topMargin", "Margin",
	242	DEF_GRAPH_MARGIN, Tk_Offset(Graph, topMargin.reqSize),
	243	TK_CONFIG_DONT_SET_DEFAULT, &bltDistanceOption},
	244	{TK_CONFIG_STRING, "-topvariable", "topVariable", "TopVariable",
	245	DEF_GRAPH_MARGIN_VAR, Tk_Offset(Graph, topMargin.varName),
	246	TK_CONFIG_NULL_OK},
	247	{TK_CONFIG_CUSTOM, "-width", "width", "Width",
	248	DEF_GRAPH_WIDTH, Tk_Offset(Graph, reqWidth),
	249	0, &bltDistanceOption},
	250	{TK_CONFIG_END, NULL, NULL, NULL, NULL, 0, 0}
	251	};
	252
	253	static Blt_SwitchParseProc StringToFormat;
	254	static Blt_SwitchCustom formatSwitch =
	255	{
	256	StringToFormat, (Blt_SwitchFreeProc *)NULL, (ClientData)0,
	257	};
	258
	259	typedef struct {
	260	char *name;
	261	int width, height;
	262	int format;
	263	} SnapData;
	264
	265	enum SnapFormats { FORMAT_PHOTO, FORMAT_EMF, FORMAT_WMF };
	266
	267	static Blt_SwitchSpec snapSwitches[] =
	268	{
	269	{BLT_SWITCH_INT_POSITIVE, "-width", Blt_Offset(SnapData, width), 0},
	270	{BLT_SWITCH_INT_POSITIVE, "-height", Blt_Offset(SnapData, height), 0},
	271	{BLT_SWITCH_CUSTOM, "-format", Blt_Offset(SnapData, format), 0,
	272	&formatSwitch},
	273	{BLT_SWITCH_END, NULL, 0, 0}
	274	};
	275
	276	static Tcl_IdleProc DisplayGraph;
	277	static Tcl_FreeProc DestroyGraph;
	278	static Tk_EventProc GraphEventProc;
	279	Tcl_CmdProc Blt_GraphInstCmdProc;
	280
	281	static Blt_BindPickProc PickEntry;
	282	static Tcl_CmdProc StripchartCmd;
	283	static Tcl_CmdProc BarchartCmd;
	284	static Tcl_CmdProc GraphCmd;
	285	static Tcl_CmdDeleteProc GraphInstCmdDeleteProc;
	286	static Blt_TileChangedProc TileChangedProc;
	287
	288	/*
	289	*--------------------------------------------------------------
	290	*
	291	* Blt_EventuallyRedrawGraph --
	292	*
	293	* Tells the Tk dispatcher to call the graph display routine at
	294	* the next idle point. This request is made only if the window
	295	* is displayed and no other redraw request is pending.
	296	*
	297	* Results: None.
	298	*
	299	* Side effects:
	300	* The window is eventually redisplayed.
	301	*
	302	*--------------------------------------------------------------
	303	*/
	304	void
	305	Blt_EventuallyRedrawGraph(graphPtr)
	306	Graph graphPtr; / Graph widget record */
	307	{
	308	if ((graphPtr->tkwin != NULL) && !(graphPtr->flags & REDRAW_PENDING)) {
	309	Tcl_DoWhenIdle(DisplayGraph, graphPtr);
	310	graphPtr->flags \|= REDRAW_PENDING;
	311	}
	312	}
	313
	314	/*
	315	*--------------------------------------------------------------
	316	*
	317	* GraphEventProc --
	318	*
	319	* This procedure is invoked by the Tk dispatcher for various
	320	* events on graphs.
	321	*
	322	* Results:
	323	* None.
	324	*
	325	* Side effects:
	326	* When the window gets deleted, internal structures get
	327	* cleaned up. When it gets exposed, the graph is eventually
	328	* redisplayed.
	329	*
	330	*--------------------------------------------------------------
	331	*/
	332	static void
	333	GraphEventProc(clientData, eventPtr)
	334	ClientData clientData; /* Graph widget record */
	335	register XEvent eventPtr; / Event which triggered call to routine */
	336	{
	337	Graph *graphPtr = clientData;
	338
	339	if (eventPtr->type == Expose) {
	340	if (eventPtr->xexpose.count == 0) {
	341	graphPtr->flags \|= REDRAW_WORLD;
	342	Blt_EventuallyRedrawGraph(graphPtr);
	343	}
	344	} else if ((eventPtr->type == FocusIn) \|\| (eventPtr->type == FocusOut)) {
	345	if (eventPtr->xfocus.detail != NotifyInferior) {
	346	if (eventPtr->type == FocusIn) {
	347	graphPtr->flags \|= GRAPH_FOCUS;
	348	} else {
	349	graphPtr->flags &= ~GRAPH_FOCUS;
	350	}
	351	graphPtr->flags \|= REDRAW_WORLD;
	352	Blt_EventuallyRedrawGraph(graphPtr);
	353	}
	354	} else if (eventPtr->type == DestroyNotify) {
	355	if (graphPtr->tkwin != NULL) {
	356	Blt_DeleteWindowInstanceData(graphPtr->tkwin);
	357	graphPtr->tkwin = NULL;
	358	Tcl_DeleteCommandFromToken(graphPtr->interp, graphPtr->cmdToken);
	359	}
	360	if (graphPtr->flags & REDRAW_PENDING) {
	361	Tcl_CancelIdleCall(DisplayGraph, graphPtr);
	362	}
	363	Tcl_EventuallyFree(graphPtr, DestroyGraph);
	364	} else if (eventPtr->type == ConfigureNotify) {
	365	graphPtr->flags \|= (MAP_WORLD \| REDRAW_WORLD);
	366	Blt_EventuallyRedrawGraph(graphPtr);
	367	}
	368	}
	369
	370	/*
	371	*----------------------------------------------------------------------
	372	*
	373	* GraphInstCmdDeleteProc --
	374	*
	375	* This procedure is invoked when a widget command is deleted. If
	376	* the widget isn't already in the process of being destroyed,
	377	* this command destroys it.
	378	*
	379	* Results:
	380	* None.
	381	*
	382	* Side effects:
	383	* The widget is destroyed.
	384	*
	385	---------------------------------------------------------------------- /
	386	static void
	387	GraphInstCmdDeleteProc(clientData)
	388	ClientData clientData; /* Pointer to widget record. */
	389	{
	390	Graph *graphPtr = clientData;
	391
	392	if (graphPtr->tkwin != NULL) { /* NULL indicates window has
	393	* already been destroyed. */
	394	Tk_Window tkwin;
	395
	396	tkwin = graphPtr->tkwin;
	397	graphPtr->tkwin = NULL;
	398	#ifdef ITCL_NAMESPACES
	399	Itk_SetWidgetCommand(tkwin, (Tcl_Command) NULL);
	400	#endif /* ITCL_NAMESPACES */
	401	Blt_DeleteWindowInstanceData(tkwin);
	402	Tk_DestroyWindow(tkwin);
	403	}
	404	}
	405
	406	/*
	407	*----------------------------------------------------------------------
	408	*
	409	* TileChangedProc
	410	*
	411	* Rebuilds the designated GC with the new tile pixmap.
	412	*
	413	* Results:
	414	* None.
	415	*
	416	*----------------------------------------------------------------------
	417	*/
	418	/ARGSUSED/
	419	static void
	420	TileChangedProc(clientData, tile)
	421	ClientData clientData;
	422	Blt_Tile tile; /* Not used. */
	423	{
	424	Graph *graphPtr = clientData;
	425
	426	if (graphPtr->tkwin != NULL) {
	427	graphPtr->flags \|= REDRAW_WORLD;
	428	Blt_EventuallyRedrawGraph(graphPtr);
	429	}
	430	}
	431
	432	/*
	433	*--------------------------------------------------------------
	434	*
	435	* AdjustAxisPointers --
	436	*
	437	* Sets the axis pointers according to whether the axis is
	438	* inverted on not. The axis sites are also reset.
	439	*
	440	* Results:
	441	* None.
	442	*
	443	*--------------------------------------------------------------
	444	*/
	445	static void
	446	AdjustAxisPointers(graphPtr)
	447	Graph graphPtr; / Graph widget record */
	448	{
	449	if (graphPtr->inverted) {
	450	graphPtr->leftMargin.axes = graphPtr->axisChain[0];
	451	graphPtr->bottomMargin.axes = graphPtr->axisChain[1];
	452	graphPtr->rightMargin.axes = graphPtr->axisChain[2];
	453	graphPtr->topMargin.axes = graphPtr->axisChain[3];
	454	} else {
	455	graphPtr->leftMargin.axes = graphPtr->axisChain[1];
	456	graphPtr->bottomMargin.axes = graphPtr->axisChain[0];
	457	graphPtr->rightMargin.axes = graphPtr->axisChain[3];
	458	graphPtr->topMargin.axes = graphPtr->axisChain[2];
	459	}
	460	}
	461
	462	static int
	463	InitPens(graphPtr)
	464	Graph *graphPtr;
	465	{
	466	Blt_InitHashTable(&graphPtr->penTable, BLT_STRING_KEYS);
	467	if (Blt_CreatePen(graphPtr, "activeLine", bltLineElementUid, 0,
	468	(char **)NULL) == NULL) {
	469	return TCL_ERROR;
	470	}
	471	if (Blt_CreatePen(graphPtr, "activeBar", bltBarElementUid, 0,
	472	(char **)NULL) == NULL) {
	473	return TCL_ERROR;
	474	}
	475	return TCL_OK;
	476	}
	477
	478	/*
	479	*----------------------------------------------------------------------
	480	*
	481	* Blt_GraphTags --
	482	*
	483	* Sets the binding tags for a graph object. This routine is
	484	* called by Tk when an event occurs in the graph. It fills
	485	* an array of pointers with bind tag addresses.
	486	*
	487	* The object addresses are strings hashed in one of two tag
	488	* tables: one for elements and the another for markers. Note
	489	* that there's only one binding table for elements and markers.
	490	* [We don't want to trigger both a marker and element bind
	491	* command for the same event.] But we don't want a marker and
	492	* element with the same tag name to activate the others
	493	* bindings. A tag "all" for markers should mean all markers, not
	494	* all markers and elements. As a result, element and marker
	495	* tags are stored in separate hash tables, which means we can't
	496	* generate the same tag address for both an elements and marker,
	497	* even if they have the same name.
	498	*
	499	* Results:
	500	* None.
	501	*
	502	* Side effects:
	503	* This information will be used by the binding code in bltUtil.c
	504	* to determine what graph objects match the current event. The
	505	* tags are placed in tagArr and *nTagsPtr is set with the
	506	* number of tags found.
	507	*
	508	*----------------------------------------------------------------------
	509	*/
	510	/ARGSUSED/
	511	void
	512	Blt_GraphTags(table, object, context, list)
	513	Blt_BindTable table;
	514	ClientData object;
	515	ClientData context; /* Not used. */
	516	Blt_List list;
	517	{
	518	Element *elemPtr;
	519	MakeTagProc *tagProc;
	520	Graph *graphPtr;
	521
	522	graphPtr = (Graph *)Blt_GetBindingData(table);
	523	/*
	524	* Trick: Markers, elements, and axes have the same first few
	525	* fields in their structures, such as "type", "name", or
	526	* "tags". This is so we can look at graph objects
	527	* interchangably. It doesn't matter what we cast the
	528	* object to.
	529	*/
	530	elemPtr = (Element *)object;
	531
	532	if ((elemPtr->classUid == bltLineElementUid) \|\|
	533	(elemPtr->classUid == bltStripElementUid) \|\|
	534	(elemPtr->classUid == bltBarElementUid)) {
	535	tagProc = Blt_MakeElementTag;
	536	} else if ((elemPtr->classUid == bltXAxisUid) \|\|
	537	(elemPtr->classUid == bltYAxisUid)) {
	538	tagProc = Blt_MakeAxisTag;
	539	} else {
	540	tagProc = Blt_MakeMarkerTag;
	541	}
	542	/*
	543	* Always add the name of the object to the tag array.
	544	*/
	545	Blt_ListAppend(list, (*tagProc) (graphPtr, elemPtr->name), 0);
	546	Blt_ListAppend(list, (*tagProc) (graphPtr, elemPtr->classUid), 0);
	547	if (elemPtr->tags != NULL) {
	548	register char **p;
	549
	550	for (p = elemPtr->tags; *p != NULL; p++) {
	551	Blt_ListAppend(list, (tagProc) (graphPtr, p), 0);
	552	}
	553	}
	554	}
	555
	556	/*
	557	* Find the closest point from the set of displayed elements,
	558	* searching the display list from back to front. That way, if
	559	* the points from two different elements overlay each other exactly,
	560	* the one that's on top (visible) is picked.
	561	*/
	562	/ARGSUSED/
	563	static ClientData
	564	PickEntry(clientData, x, y, contextPtr)
	565	ClientData clientData;
	566	int x, y;
	567	ClientData contextPtr; / Not used. */
	568	{
	569	Graph *graphPtr = clientData;
	570	Blt_ChainLink *linkPtr;
	571	Element *elemPtr;
	572	Marker *markerPtr;
	573	Extents2D exts;
	574
	575	if (graphPtr->flags & MAP_ALL) {
	576	return NULL; /* Can't pick anything until the next
	577	* redraw occurs. */
	578	}
	579	Blt_GraphExtents(graphPtr, &exts);
	580
	581	if ((x > exts.right) \|\| (x < exts.left) \|\| (y > exts.bottom) \|\|
	582	(y < exts.top)) {
	583	/*
	584	* Sample coordinate is in one of the graph margins. Can only
	585	* pick an axis.
	586	*/
	587	return Blt_NearestAxis(graphPtr, x, y);
	588	}
	589
	590	/*
	591	* From top-to-bottom check:
	592	* 1. markers drawn on top (-under false).
	593	* 2. elements using its display list back to front.
	594	* 3. markers drawn under element (-under true).
	595	*/
	596	markerPtr = (Marker *)Blt_NearestMarker(graphPtr, x, y, FALSE);
	597	if (markerPtr != NULL) {
	598	return markerPtr; /* Found a marker (-under false). */
	599	}
	600	{
	601	ClosestSearch search;
	602
	603	search.along = SEARCH_BOTH;
	604	search.halo = graphPtr->halo + 1;
	605	search.index = -1;
	606	search.x = x;
	607	search.y = y;
	608	search.dist = (double)(search.halo + 1);
	609	search.mode = SEARCH_AUTO;
	610
	611	for (linkPtr = Blt_ChainLastLink(graphPtr->elements.displayList);
	612	linkPtr != NULL; linkPtr = Blt_ChainPrevLink(linkPtr)) {
	613	elemPtr = Blt_ChainGetValue(linkPtr);
	614	if ((elemPtr->flags & MAP_ITEM) \|\|
	615	(Blt_VectorNotifyPending(elemPtr->x.clientId)) \|\|
	616	(Blt_VectorNotifyPending(elemPtr->y.clientId))) {
	617	continue;
	618	}
	619	if ((!elemPtr->hidden) && (elemPtr->state == STATE_NORMAL)) {
	620	(*elemPtr->procsPtr->closestProc) (graphPtr, elemPtr, &search);
	621	}
	622	}
	623	if (search.dist <= (double)search.halo) {
	624	return search.elemPtr; /* Found an element within the
	625	* minimum halo distance. */
	626	}
	627	}
	628	markerPtr = (Marker *)Blt_NearestMarker(graphPtr, x, y, TRUE);
	629	if (markerPtr != NULL) {
	630	return markerPtr; /* Found a marker (-under true) */
	631	}
	632	return NULL; /* Nothing found. */
	633	}
	634
	635	/*
	636	*----------------------------------------------------------------------
	637	*
	638	* ConfigureGraph --
	639	*
	640	* Allocates resources for the graph.
	641	*
	642	* Results:
	643	* None.
	644	*
	645	* Side effects:
	646	* Configuration information, such as text string, colors, font,
	647	* etc. get set for graphPtr; old resources get freed, if there
	648	* were any. The graph is redisplayed.
	649	*
	650	*----------------------------------------------------------------------
	651	*/
	652	static void
	653	ConfigureGraph(graphPtr)
	654	Graph graphPtr; / Graph widget record */
	655	{
	656	XColor *colorPtr;
	657	GC newGC;
	658	XGCValues gcValues;
	659	unsigned long gcMask;
	660
	661	/* Don't allow negative bar widths. Reset to an arbitrary value (0.1) */
	662	if (graphPtr->barWidth <= 0.0) {
	663	graphPtr->barWidth = 0.1;
	664	}
	665	graphPtr->inset = graphPtr->borderWidth + graphPtr->highlightWidth + 1;
	666	if ((graphPtr->reqHeight != Tk_ReqHeight(graphPtr->tkwin)) \|\|
	667	(graphPtr->reqWidth != Tk_ReqWidth(graphPtr->tkwin))) {
	668	Tk_GeometryRequest(graphPtr->tkwin, graphPtr->reqWidth,
	669	graphPtr->reqHeight);
	670	}
	671	Tk_SetInternalBorder(graphPtr->tkwin, graphPtr->borderWidth);
	672	colorPtr = Tk_3DBorderColor(graphPtr->border);
	673
	674	if (graphPtr->title != NULL) {
	675	int w, h;
	676
	677	Blt_GetTextExtents(&graphPtr->titleTextStyle, graphPtr->title, &w, &h);
	678	graphPtr->titleTextStyle.height = h + 10;
	679	} else {
	680	graphPtr->titleTextStyle.width = graphPtr->titleTextStyle.height = 0;
	681	}
	682
	683	/*
	684	* Create GCs for interior and exterior regions, and a background
	685	* GC for clearing the margins with XFillRectangle
	686	*/
	687
	688	/* Margin GC */
	689
	690	gcValues.foreground = graphPtr->titleTextStyle.color->pixel;
	691	gcValues.background = colorPtr->pixel;
	692	gcMask = (GCForeground \| GCBackground);
	693	newGC = Tk_GetGC(graphPtr->tkwin, gcMask, &gcValues);
	694	if (graphPtr->drawGC != NULL) {
	695	Tk_FreeGC(graphPtr->display, graphPtr->drawGC);
	696	}
	697	graphPtr->drawGC = newGC;
	698
	699	/* Plot fill GC (Background = Foreground) */
	700
	701	gcValues.foreground = graphPtr->plotBg->pixel;
	702	newGC = Tk_GetGC(graphPtr->tkwin, gcMask, &gcValues);
	703	if (graphPtr->plotFillGC != NULL) {
	704	Tk_FreeGC(graphPtr->display, graphPtr->plotFillGC);
	705	}
	706	graphPtr->plotFillGC = newGC;
	707
	708	/* Margin fill GC (Background = Foreground) */
	709
	710	gcValues.foreground = colorPtr->pixel;
	711	gcValues.background = graphPtr->titleTextStyle.color->pixel;
	712	newGC = Tk_GetGC(graphPtr->tkwin, gcMask, &gcValues);
	713	if (graphPtr->fillGC != NULL) {
	714	Tk_FreeGC(graphPtr->display, graphPtr->fillGC);
	715	}
	716	graphPtr->fillGC = newGC;
	717	if (graphPtr->tile != NULL) {
	718	Blt_SetTileChangedProc(graphPtr->tile, TileChangedProc, graphPtr);
	719	}
	720
	721	Blt_ResetTextStyle(graphPtr->tkwin, &graphPtr->titleTextStyle);
	722
	723	if (Blt_ConfigModified(configSpecs, "-invertxy", (char *)NULL)) {
	724
	725	/*
	726	* If the -inverted option changed, we need to readjust the pointers
	727	* to the axes and recompute the their scales.
	728	*/
	729
	730	AdjustAxisPointers(graphPtr);
	731	graphPtr->flags \|= RESET_AXES;
	732	}
	733	if ((!graphPtr->backingStore) && (graphPtr->backPixmap != None)) {
	734
	735	/*
	736	* Free the pixmap if we're not buffering the display of elements
	737	* anymore.
	738	*/
	739
	740	Tk_FreePixmap(graphPtr->display, graphPtr->backPixmap);
	741	graphPtr->backPixmap = None;
	742	}
	743	/*
	744	* Reconfigure the crosshairs, just in case the background color of
	745	* the plotarea has been changed.
	746	*/
	747	Blt_ConfigureCrosshairs(graphPtr);
	748
	749	/*
	750	* Update the layout of the graph (and redraw the elements) if
	751	* any of the following graph options which affect the size of
	752	* the plotting area has changed.
	753	*
	754	* -aspect
	755	* -borderwidth, -plotborderwidth
	756	* -font, -title
	757	* -width, -height
	758	* -invertxy
	759	* -bottommargin, -leftmargin, -rightmargin, -topmargin,
	760	* -barmode, -barwidth
	761	*/
	762	if (Blt_ConfigModified(configSpecs, "-invertxy", "-title", "-font",
	763	"-margin", "-width", "-height", "-barmode", "-pad", "-aspect",
	764	(char *)NULL)) {
	765	graphPtr->flags \|= RESET_WORLD;
	766	}
	767	if (Blt_ConfigModified(configSpecs, "-plotbackground", (char *)NULL)) {
	768	graphPtr->flags \|= REDRAW_BACKING_STORE;
	769	}
	770	graphPtr->flags \|= REDRAW_WORLD;
	771	Blt_EventuallyRedrawGraph(graphPtr);
	772	}
	773
	774	/*
	775	*----------------------------------------------------------------------
	776	*
	777	* DestroyGraph --
	778	*
	779	* This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
	780	* to clean up the internal structure of a graph at a safe time
	781	* (when no-one is using it anymore).
	782	*
	783	* Results:
	784	* None.
	785	*
	786	* Side effects:
	787	* Everything associated with the widget is freed up.
	788	*
	789	*----------------------------------------------------------------------
	790	*/
	791	static void
	792	DestroyGraph(dataPtr)
	793	DestroyData dataPtr;
	794	{
	795	Graph graphPtr = (Graph )dataPtr;
	796
	797	Tk_FreeOptions(configSpecs, (char *)graphPtr, graphPtr->display, 0);
	798	/*
	799	* Destroy the individual components of the graph: elements, markers,
	800	* X and Y axes, legend, display lists etc.
	801	*/
	802	Blt_DestroyMarkers(graphPtr);
	803	Blt_DestroyElements(graphPtr);
	804
	805	Blt_DestroyAxes(graphPtr);
	806	Blt_DestroyPens(graphPtr);
	807
	808	if (graphPtr->legend != NULL) {
	809	Blt_DestroyLegend(graphPtr);
	810	}
	811	if (graphPtr->postscript != NULL) {
	812	Blt_DestroyPostScript(graphPtr);
	813	}
	814	if (graphPtr->crosshairs != NULL) {
	815	Blt_DestroyCrosshairs(graphPtr);
	816	}
	817	if (graphPtr->gridPtr != NULL) {
	818	Blt_DestroyGrid(graphPtr);
	819	}
	820	if (graphPtr->bindTable != NULL) {
	821	Blt_DestroyBindingTable(graphPtr->bindTable);
	822	}
	823
	824	/* Release allocated X resources and memory. */
	825	if (graphPtr->drawGC != NULL) {
	826	Tk_FreeGC(graphPtr->display, graphPtr->drawGC);
	827	}
	828	if (graphPtr->fillGC != NULL) {
	829	Tk_FreeGC(graphPtr->display, graphPtr->fillGC);
	830	}
	831	if (graphPtr->plotFillGC != NULL) {
	832	Tk_FreeGC(graphPtr->display, graphPtr->plotFillGC);
	833	}
	834	Blt_FreeTextStyle(graphPtr->display, &graphPtr->titleTextStyle);
	835	if (graphPtr->backPixmap != None) {
	836	Tk_FreePixmap(graphPtr->display, graphPtr->backPixmap);
	837	}
	838	if (graphPtr->freqArr != NULL) {
	839	Blt_Free(graphPtr->freqArr);
	840	}
	841	if (graphPtr->nStacks > 0) {
	842	Blt_DeleteHashTable(&graphPtr->freqTable);
	843	}
	844	if (graphPtr->tile != NULL) {
	845	Blt_FreeTile(graphPtr->tile);
	846	}
	847	Blt_Free(graphPtr);
	848	}
	849
	850	/*
	851	*----------------------------------------------------------------------
	852	*
	853	* CreateGraph --
	854	*
	855	* This procedure creates and initializes a new widget.
	856	*
	857	* Results:
	858	* The return value is a pointer to a structure describing
	859	* the new widget. If an error occurred, then the return
	860	* value is NULL and an error message is left in interp->result.
	861	*
	862	* Side effects:
	863	* Memory is allocated, a Tk_Window is created, etc.
	864	*
	865	*----------------------------------------------------------------------
	866	*/
	867
	868	static Graph *
	869	CreateGraph(interp, argc, argv, classUid)
	870	Tcl_Interp *interp;
	871	int argc;
	872	char **argv;
	873	Blt_Uid classUid;
	874	{
	875	Graph *graphPtr;
	876	Tk_Window tkwin;
	877
	878	tkwin = Tk_CreateWindowFromPath(interp, Tk_MainWindow(interp), argv[1],
	879	(char *)NULL);
	880	if (tkwin == NULL) {
	881	return NULL;
	882	}
	883	graphPtr = Blt_Calloc(1, sizeof(Graph));
	884	assert(graphPtr);
	885
	886	/* Initialize the graph data structure. */
	887
	888	graphPtr->tkwin = tkwin;
	889	graphPtr->display = Tk_Display(tkwin);
	890	graphPtr->interp = interp;
	891	graphPtr->classUid = classUid;
	892	graphPtr->backingStore = TRUE;
	893	graphPtr->doubleBuffer = TRUE;
	894	graphPtr->highlightWidth = 2;
	895	graphPtr->plotRelief = TK_RELIEF_SUNKEN;
	896	graphPtr->relief = TK_RELIEF_FLAT;
	897	graphPtr->flags = (RESET_WORLD);
	898	graphPtr->nextMarkerId = 1;
	899	graphPtr->padLeft = graphPtr->padRight = 8;
	900	graphPtr->padTop = graphPtr->padBottom = 8;
	901	graphPtr->bottomMargin.site = MARGIN_BOTTOM;
	902	graphPtr->leftMargin.site = MARGIN_LEFT;
	903	graphPtr->topMargin.site = MARGIN_TOP;
	904	graphPtr->rightMargin.site = MARGIN_RIGHT;
	905	Blt_InitTextStyle(&graphPtr->titleTextStyle);
	906
	907	Blt_InitHashTable(&graphPtr->axes.table, BLT_STRING_KEYS);
	908	Blt_InitHashTable(&graphPtr->axes.tagTable, BLT_STRING_KEYS);
	909	Blt_InitHashTable(&graphPtr->elements.table, BLT_STRING_KEYS);
	910	Blt_InitHashTable(&graphPtr->elements.tagTable, BLT_STRING_KEYS);
	911	Blt_InitHashTable(&graphPtr->markers.table, BLT_STRING_KEYS);
	912	Blt_InitHashTable(&graphPtr->markers.tagTable, BLT_STRING_KEYS);
	913	graphPtr->elements.displayList = Blt_ChainCreate();
	914	graphPtr->markers.displayList = Blt_ChainCreate();
	915	graphPtr->axes.displayList = Blt_ChainCreate();
	916
	917	if (classUid == bltLineElementUid) {
	918	Tk_SetClass(tkwin, "Graph");
	919	} else if (classUid == bltBarElementUid) {
	920	Tk_SetClass(tkwin, "Barchart");
	921	} else if (classUid == bltStripElementUid) {
	922	Tk_SetClass(tkwin, "Stripchart");
	923	}
	924	Blt_SetWindowInstanceData(tkwin, graphPtr);
	925
	926	if (InitPens(graphPtr) != TCL_OK) {
	927	goto error;
	928	}
	929	if (Tk_ConfigureWidget(interp, tkwin, configSpecs, argc - 2, argv + 2,
	930	(char *)graphPtr, 0) != TCL_OK) {
	931	goto error;
	932	}
	933	if (Blt_DefaultAxes(graphPtr) != TCL_OK) {
	934	goto error;
	935	}
	936	AdjustAxisPointers(graphPtr);
	937
	938	if (Blt_CreatePostScript(graphPtr) != TCL_OK) {
	939	goto error;
	940	}
	941	if (Blt_CreateCrosshairs(graphPtr) != TCL_OK) {
	942	goto error;
	943	}
	944	if (Blt_CreateLegend(graphPtr) != TCL_OK) {
	945	goto error;
	946	}
	947	if (Blt_CreateGrid(graphPtr) != TCL_OK) {
	948	goto error;
	949	}
	950	Tk_CreateEventHandler(graphPtr->tkwin,
	951	ExposureMask \| StructureNotifyMask \| FocusChangeMask, GraphEventProc,
	952	graphPtr);
	953
	954	graphPtr->cmdToken = Tcl_CreateCommand(interp, argv[1],
	955	Blt_GraphInstCmdProc, graphPtr, GraphInstCmdDeleteProc);
	956	#ifdef ITCL_NAMESPACES
	957	Itk_SetWidgetCommand(graphPtr->tkwin, graphPtr->cmdToken);
	958	#endif
	959	ConfigureGraph(graphPtr);
	960	graphPtr->bindTable = Blt_CreateBindingTable(interp, tkwin, graphPtr,
	961	PickEntry, Blt_GraphTags);
	962	return graphPtr;
	963
	964	error:
	965	DestroyGraph((DestroyData)graphPtr);
	966	return NULL;
	967	}
	968
	969
	970	/* Widget sub-commands */
	971
	972	/ARGSUSED/
	973	static int
	974	XAxisOp(graphPtr, interp, argc, argv)
	975	Graph *graphPtr;
	976	Tcl_Interp interp; / Not used. */
	977	int argc;
	978	char **argv;
	979	{
	980	int margin;
	981
	982	margin = (graphPtr->inverted) ? MARGIN_LEFT : MARGIN_BOTTOM;
	983	return Blt_AxisOp(graphPtr, margin, argc, argv);
	984	}
	985
	986	/ARGSUSED/
	987	static int
	988	X2AxisOp(graphPtr, interp, argc, argv)
	989	Graph *graphPtr;
	990	Tcl_Interp interp; / Not used. */
	991	int argc;
	992	char **argv;
	993	{
	994	int margin;
	995
	996	margin = (graphPtr->inverted) ? MARGIN_RIGHT : MARGIN_TOP;
	997	return Blt_AxisOp(graphPtr, margin, argc, argv);
	998	}
	999
	1000	/ARGSUSED/
	1001	static int
	1002	YAxisOp(graphPtr, interp, argc, argv)
	1003	Graph *graphPtr;
	1004	Tcl_Interp interp; / Not used. */
	1005	int argc;
	1006	char **argv;
	1007	{
	1008	int margin;
	1009
	1010	margin = (graphPtr->inverted) ? MARGIN_BOTTOM : MARGIN_LEFT;
	1011	return Blt_AxisOp(graphPtr, margin, argc, argv);
	1012	}
	1013
	1014	/ARGSUSED/
	1015	static int
	1016	Y2AxisOp(graphPtr, interp, argc, argv)
	1017	Graph *graphPtr;
	1018	Tcl_Interp interp; / Not used. */
	1019	int argc;
	1020	char **argv;
	1021	{
	1022	int margin;
	1023
	1024	margin = (graphPtr->inverted) ? MARGIN_TOP : MARGIN_RIGHT;
	1025	return Blt_AxisOp(graphPtr, margin, argc, argv);
	1026	}
	1027
	1028	/ARGSUSED/
	1029	static int
	1030	BarOp(graphPtr, interp, argc, argv)
	1031	Graph *graphPtr;
	1032	Tcl_Interp interp; / Not used. */
	1033	int argc;
	1034	char **argv;
	1035	{
	1036	return Blt_ElementOp(graphPtr, interp, argc, argv, bltBarElementUid);
	1037	}
	1038
	1039	/ARGSUSED/
	1040	static int
	1041	LineOp(graphPtr, interp, argc, argv)
	1042	Graph *graphPtr;
	1043	Tcl_Interp interp; / Not used. */
	1044	int argc;
	1045	char **argv;
	1046	{
	1047	return Blt_ElementOp(graphPtr, interp, argc, argv, bltLineElementUid);
	1048	}
	1049
	1050	/ARGSUSED/
	1051	static int
	1052	ElementOp(graphPtr, interp, argc, argv)
	1053	Graph *graphPtr;
	1054	Tcl_Interp interp; / Not used. */
	1055	int argc;
	1056	char **argv;
	1057	{
	1058	return Blt_ElementOp(graphPtr, interp, argc, argv, graphPtr->classUid);
	1059	}
	1060
	1061	static int
	1062	ConfigureOp(graphPtr, interp, argc, argv)
	1063	Graph *graphPtr;
	1064	Tcl_Interp *interp;
	1065	int argc;
	1066	char **argv;
	1067	{
	1068	int flags;
	1069
	1070	flags = TK_CONFIG_ARGV_ONLY;
	1071	if (argc == 2) {
	1072	return Tk_ConfigureInfo(interp, graphPtr->tkwin, configSpecs,
	1073	(char )graphPtr, (char )NULL, flags);
	1074	} else if (argc == 3) {
	1075	return Tk_ConfigureInfo(interp, graphPtr->tkwin, configSpecs,
	1076	(char *)graphPtr, argv[2], flags);
	1077	} else {
	1078	if (Tk_ConfigureWidget(interp, graphPtr->tkwin, configSpecs, argc - 2,
	1079	argv + 2, (char *)graphPtr, flags) != TCL_OK) {
	1080	return TCL_ERROR;
	1081	}
	1082	ConfigureGraph(graphPtr);
	1083	return TCL_OK;
	1084	}
	1085	}
	1086
	1087	/* ARGSUSED*/
	1088	static int
	1089	CgetOp(graphPtr, interp, argc, argv)
	1090	Graph *graphPtr;
	1091	Tcl_Interp *interp;
	1092	int argc; /* Not used. */
	1093	char **argv;
	1094	{
	1095	return Tk_ConfigureValue(interp, graphPtr->tkwin, configSpecs,
	1096	(char *)graphPtr, argv[2], 0);
	1097	}
	1098
	1099	/*
	1100	*--------------------------------------------------------------
	1101	*
	1102	* ExtentsOp --
	1103	*
	1104	* Reports the size of one of several items within the graph.
	1105	* The following are valid items:
	1106	*
	1107	* "bottommargin" Height of the bottom margin
	1108	* "leftmargin" Width of the left margin
	1109	* "legend" x y w h of the legend
	1110	* "plotarea" x y w h of the plotarea
	1111	* "plotheight" Height of the plot area
	1112	* "rightmargin" Width of the right margin
	1113	* "topmargin" Height of the top margin
	1114	* "plotwidth" Width of the plot area
	1115	*
	1116	* Results:
	1117	* Always returns TCL_OK.
	1118	*
	1119	*--------------------------------------------------------------
	1120	*/
	1121	/* ARGSUSED*/
	1122	static int
	1123	ExtentsOp(graphPtr, interp, argc, argv)
	1124	Graph *graphPtr;
	1125	Tcl_Interp *interp;
	1126	int argc; /* Not used. */
	1127	char **argv;
	1128	{
	1129	char c;
	1130	unsigned int length;
	1131	char string[200];
	1132
	1133	c = argv[2][0];
	1134	length = strlen(argv[2]);
	1135	if ((c == 'p') && (length > 4) &&
	1136	(strncmp("plotheight", argv[2], length) == 0)) {
	1137	Tcl_SetResult(interp, Blt_Itoa(graphPtr->bottom - graphPtr->top + 1),
	1138	TCL_VOLATILE);
	1139	} else if ((c == 'p') && (length > 4) &&
	1140	(strncmp("plotwidth", argv[2], length) == 0)) {
	1141	Tcl_SetResult(interp, Blt_Itoa(graphPtr->right - graphPtr->left + 1),
	1142	TCL_VOLATILE);
	1143	} else if ((c == 'p') && (length > 4) &&
	1144	(strncmp("plotarea", argv[2], length) == 0)) {
	1145	sprintf(string, "%d %d %d %d", graphPtr->left, graphPtr->top,
	1146	graphPtr->right - graphPtr->left + 1,
	1147	graphPtr->bottom - graphPtr->top + 1);
	1148	Tcl_SetResult(interp, string, TCL_VOLATILE);
	1149	} else if ((c == 'l') && (length > 2) &&
	1150	(strncmp("legend", argv[2], length) == 0)) {
	1151	sprintf(string, "%d %d %d %d", Blt_LegendX(graphPtr->legend),
	1152	Blt_LegendY(graphPtr->legend),
	1153	Blt_LegendWidth(graphPtr->legend),
	1154	Blt_LegendHeight(graphPtr->legend));
	1155	Tcl_SetResult(interp, string, TCL_VOLATILE);
	1156	} else if ((c == 'l') && (length > 2) &&
	1157	(strncmp("leftmargin", argv[2], length) == 0)) {
	1158	Tcl_SetResult(interp, Blt_Itoa(graphPtr->leftMargin.width),
	1159	TCL_VOLATILE);
	1160	} else if ((c == 'r') && (length > 1) &&
	1161	(strncmp("rightmargin", argv[2], length) == 0)) {
	1162	Tcl_SetResult(interp, Blt_Itoa(graphPtr->rightMargin.width),
	1163	TCL_VOLATILE);
	1164	} else if ((c == 't') && (length > 1) &&
	1165	(strncmp("topmargin", argv[2], length) == 0)) {
	1166	Tcl_SetResult(interp, Blt_Itoa(graphPtr->topMargin.height), TCL_VOLATILE);
	1167	} else if ((c == 'b') && (length > 1) &&
	1168	(strncmp("bottommargin", argv[2], length) == 0)) {
	1169	Tcl_SetResult(interp, Blt_Itoa(graphPtr->bottomMargin.height),
	1170	TCL_VOLATILE);
	1171	} else {
	1172	Tcl_AppendResult(interp, "bad extent item \"", argv[2],
	1173	"\": should be plotheight, plotwidth, leftmargin, rightmargin, \
	1174	topmargin, bottommargin, plotarea, or legend", (char *)NULL);
	1175	return TCL_ERROR;
	1176	}
	1177	return TCL_OK;
	1178	}
	1179
	1180	/*
	1181	*--------------------------------------------------------------
	1182	*
	1183	* InsideOp --
	1184	*
	1185	* Returns true of false whether the given point is inside
	1186	* the plotting area (defined by left,bottom right, top).
	1187	*
	1188	* Results:
	1189	* Always returns TCL_OK. interp->result will contain
	1190	* the boolean string representation.
	1191	*
	1192	*--------------------------------------------------------------
	1193	*/
	1194	/* ARGSUSED*/
	1195	static int
	1196	InsideOp(graphPtr, interp, argc, argv)
	1197	Graph *graphPtr;
	1198	Tcl_Interp *interp;
	1199	int argc; /* Not used. */
	1200	char **argv;
	1201	{
	1202	int x, y;
	1203	Extents2D exts;
	1204	int result;
	1205
	1206	if (Tk_GetPixels(interp, graphPtr->tkwin, argv[2], &x) != TCL_OK) {
	1207	return TCL_ERROR;
	1208	}
	1209	if (Tk_GetPixels(interp, graphPtr->tkwin, argv[3], &y) != TCL_OK) {
	1210	return TCL_ERROR;
	1211	}
	1212	Blt_GraphExtents(graphPtr, &exts);
	1213	result = PointInRegion(&exts, x, y);
	1214	Blt_SetBooleanResult(interp, result);
	1215	return TCL_OK;
	1216	}
	1217
	1218	/*
	1219	* -------------------------------------------------------------------------
	1220	*
	1221	* InvtransformOp --
	1222	*
	1223	* This procedure returns a list of the graph coordinate
	1224	* values corresponding with the given window X and Y
	1225	* coordinate positions.
	1226	*
	1227	* Results:
	1228	* Returns a standard Tcl result. If an error occurred while
	1229	* parsing the window positions, TCL_ERROR is returned, and
	1230	* interp->result will contain the error message. Otherwise
	1231	* interp->result will contain a Tcl list of the x and y
	1232	* coordinates.
	1233	*
	1234	* ------------------------------------------------------------------------
	1235	*/
	1236	/ARGSUSED/
	1237	static int
	1238	InvtransformOp(graphPtr, interp, argc, argv)
	1239	Graph graphPtr; / Graph widget record */
	1240	Tcl_Interp *interp;
	1241	int argc; /* Not used. */
	1242	char **argv;
	1243	{
	1244	double x, y;
	1245	Point2D point;
	1246	Axis2D axes;
	1247
	1248	if (Tcl_ExprDouble(interp, argv[2], &x) != TCL_OK \|\|
	1249	Tcl_ExprDouble(interp, argv[3], &y) != TCL_OK) {
	1250	return TCL_ERROR;
	1251	}
	1252	if (graphPtr->flags & RESET_AXES) {
	1253	Blt_ResetAxes(graphPtr);
	1254	}
	1255	/* Perform the reverse transformation, converting from window
	1256	* coordinates to graph data coordinates. Note that the point is
	1257	* always mapped to the bottom and left axes (which may not be
	1258	* what the user wants). */
	1259
	1260	/* Pick the first pair of axes */
	1261	axes.x = Blt_GetFirstAxis(graphPtr->axisChain[0]);
	1262	axes.y = Blt_GetFirstAxis(graphPtr->axisChain[1]);
	1263	point = Blt_InvMap2D(graphPtr, x, y, &axes);
	1264
	1265	Tcl_AppendElement(interp, Blt_Dtoa(interp, point.x));
	1266	Tcl_AppendElement(interp, Blt_Dtoa(interp, point.y));
	1267	return TCL_OK;
	1268	}
	1269
	1270	/*
	1271	* --------------------------------------------------------------------------
	1272	*
	1273	* TransformOp --
	1274	*
	1275	* This procedure returns a list of the window coordinates
	1276	* corresponding with the given graph x and y coordinates.
	1277	*
	1278	* Results:
	1279	* Returns a standard Tcl result. interp->result contains
	1280	* the list of the graph coordinates. If an error occurred
	1281	* while parsing the window positions, TCL_ERROR is returned,
	1282	* then interp->result will contain an error message.
	1283	*
	1284	* -------------------------------------------------------------------------
	1285	*/
	1286	/ARGSUSED/
	1287	static int
	1288	TransformOp(graphPtr, interp, argc, argv)
	1289	Graph graphPtr; / Graph widget record */
	1290	Tcl_Interp *interp;
	1291	int argc; /* Not used. */
	1292	char **argv;
	1293	{
	1294	double x, y;
	1295	Point2D point;
	1296	Axis2D axes;
	1297
	1298	if ((Tcl_ExprDouble(interp, argv[2], &x) != TCL_OK) \|\|
	1299	(Tcl_ExprDouble(interp, argv[3], &y) != TCL_OK)) {
	1300	return TCL_ERROR;
	1301	}
	1302	if (graphPtr->flags & RESET_AXES) {
	1303	Blt_ResetAxes(graphPtr);
	1304	}
	1305	/*
	1306	* Perform the transformation from window to graph coordinates.
	1307	* Note that the points are always mapped onto the bottom and left
	1308	* axes (which may not be the what the user wants).
	1309	*/
	1310	axes.x = Blt_GetFirstAxis(graphPtr->axisChain[0]);
	1311	axes.y = Blt_GetFirstAxis(graphPtr->axisChain[1]);
	1312
	1313	point = Blt_Map2D(graphPtr, x, y, &axes);
	1314	Tcl_AppendElement(interp, Blt_Itoa(ROUND(point.x)));
	1315	Tcl_AppendElement(interp, Blt_Itoa(ROUND(point.y)));
	1316	return TCL_OK;
	1317	}
	1318
	1319	#ifndef NO_PRINTER
	1320
	1321	/*
	1322	* --------------------------------------------------------------------------
	1323	*
	1324	* Print1Op --
	1325	*
	1326	* Prints the equivalent of a screen snapshot of the graph
	1327	* to the designated printer.
	1328	*
	1329	* Results:
	1330	* Returns a standard Tcl result. If an error occurred
	1331	* TCL_ERROR is returned and interp->result will contain an
	1332	* error message.
	1333	*
	1334	* -------------------------------------------------------------------------
	1335	*/
	1336	/ARGSUSED/
	1337	static int
	1338	Print1Op(graphPtr, interp, argc, argv)
	1339	Graph graphPtr; / Graph widget record */
	1340	Tcl_Interp *interp;
	1341	int argc; /* Not used. */
	1342	char **argv;
	1343	{
	1344	int noBackingStore = 0;
	1345	BITMAPINFO info;
	1346	void *data;
	1347	TkWinDCState state;
	1348	TkWinBitmap bd;
	1349	DIBSECTION ds;
	1350	Drawable drawable;
	1351	HBITMAP hBitmap;
	1352	HDC hDC;
	1353	DOCINFO di;
	1354	double pageWidth, pageHeight;
	1355	int result;
	1356	double scale, sx, sy;
	1357	int jobId;
	1358
	1359	graphPtr->width = Tk_Width(graphPtr->tkwin);
	1360	graphPtr->height = Tk_Height(graphPtr->tkwin);
	1361	if ((graphPtr->width < 2) && (graphPtr->reqWidth > 0)) {
	1362	graphPtr->width = graphPtr->reqWidth;
	1363	}
	1364	if ((graphPtr->height < 2) && (graphPtr->reqHeight > 0)) {
	1365	graphPtr->height = graphPtr->reqHeight;
	1366	}
	1367	if (argc == 2) {
	1368	result = Blt_PrintDialog(interp, &drawable);
	1369	if (result == TCL_ERROR) {
	1370	return TCL_ERROR;
	1371	}
	1372	if (result == TCL_RETURN) {
	1373	return TCL_OK;
	1374	}
	1375	} else {
	1376	if (Blt_GetOpenPrinter(interp, argv[2], &drawable) != TCL_OK) {
	1377	return TCL_ERROR;
	1378	}
	1379	}
	1380	/*
	1381	* This is a taken from Blt_SnapPhoto. The difference is that
	1382	* here we're using the DIBSection directly, without converting
	1383	* the section into a ColorImage.
	1384	*/
	1385	ZeroMemory(&info, sizeof(info));
	1386	info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
	1387	info.bmiHeader.biWidth = graphPtr->width;
	1388	info.bmiHeader.biHeight = graphPtr->height;
	1389	info.bmiHeader.biPlanes = 1;
	1390	info.bmiHeader.biBitCount = 32;
	1391	info.bmiHeader.biCompression = BI_RGB;
	1392	hDC = TkWinGetDrawableDC(graphPtr->display, Tk_WindowId(graphPtr->tkwin),
	1393	&state);
	1394	hBitmap = CreateDIBSection(hDC, &info, DIB_RGB_COLORS, &data, NULL, 0);
	1395	TkWinReleaseDrawableDC(Tk_WindowId(graphPtr->tkwin), hDC, &state);
	1396
	1397	/*
	1398	* Create our own drawable by hand using the DIB we just created.
	1399	* We'll then draw into it using the standard drawing functions.
	1400	*/
	1401	bd.type = TWD_BITMAP;
	1402	bd.handle = hBitmap;
	1403	bd.colormap = DefaultColormap(graphPtr->display,
	1404	DefaultScreen(graphPtr->display));
	1405	bd.depth = Tk_Depth(graphPtr->tkwin);
	1406
	1407	graphPtr->flags \|= RESET_WORLD;
	1408	Blt_DrawGraph(graphPtr, (Drawable)&bd, noBackingStore);
	1409
	1410	/*
	1411	* Now that the DIB contains the image of the graph, get the the
	1412	* data bits and write them to the printer device, stretching the
	1413	* image to the fit the printer's resolution.
	1414	*/
	1415	result = TCL_ERROR;
	1416	if (GetObject(hBitmap, sizeof(DIBSECTION), &ds) == 0) {
	1417	Tcl_AppendResult(interp, "can't get object: ", Blt_LastError(),
	1418	(char *)NULL);
	1419	goto done;
	1420	}
	1421	hDC = ((TkWinDC *) drawable)->hdc;
	1422	/* Get the resolution of the printer device. */
	1423	sx = (double)GetDeviceCaps(hDC, HORZRES) / (double)graphPtr->width;
	1424	sy = (double)GetDeviceCaps(hDC, VERTRES) / (double)graphPtr->height;
	1425	scale = MIN(sx, sy);
	1426	pageWidth = scale * graphPtr->width;
	1427	pageHeight = scale * graphPtr->height;
	1428
	1429	ZeroMemory(&di, sizeof(di));
	1430	di.cbSize = sizeof(di);
	1431	di.lpszDocName = "Graph Contents";
	1432	jobId = StartDoc(hDC, &di);
	1433	if (jobId <= 0) {
	1434	Tcl_AppendResult(interp, "can't start document: ", Blt_LastError(),
	1435	(char *)NULL);
	1436	goto done;
	1437	}
	1438	if (StartPage(hDC) <= 0) {
	1439	Tcl_AppendResult(interp, "error starting page: ", Blt_LastError(),
	1440	(char *)NULL);
	1441	goto done;
	1442	}
	1443	StretchDIBits(hDC, 0, 0, ROUND(pageWidth), ROUND(pageHeight), 0, 0,
	1444	graphPtr->width, graphPtr->height, ds.dsBm.bmBits,
	1445	(LPBITMAPINFO)&ds.dsBmih, DIB_RGB_COLORS, SRCCOPY);
	1446	EndPage(hDC);
	1447	EndDoc(hDC);
	1448	result = TCL_OK;
	1449	done:
	1450	DeleteBitmap(hBitmap);
	1451	return result;
	1452	}
	1453
	1454	/*
	1455	* --------------------------------------------------------------------------
	1456	*
	1457	* Print2Op --
	1458	*
	1459	* Prints directly to the designated printer device.
	1460	*
	1461	* Results:
	1462	* Returns a standard Tcl result. If an error occurred,
	1463	* TCL_ERROR is returned and interp->result will contain an
	1464	* error message.
	1465	*
	1466	* -------------------------------------------------------------------------
	1467	*/
	1468	/ARGSUSED/
	1469	static int
	1470	Print2Op(graphPtr, interp, argc, argv)
	1471	Graph graphPtr; / Graph widget record */
	1472	Tcl_Interp *interp;
	1473	int argc; /* Not used. */
	1474	char **argv;
	1475	{
	1476	Drawable drawable;
	1477	int noBackingStore = 0;
	1478	int result;
	1479
	1480	graphPtr->width = Tk_Width(graphPtr->tkwin);
	1481	graphPtr->height = Tk_Height(graphPtr->tkwin);
	1482	if ((graphPtr->width < 2) && (graphPtr->reqWidth > 0)) {
	1483	graphPtr->width = graphPtr->reqWidth;
	1484	}
	1485	if ((graphPtr->height < 2) && (graphPtr->reqHeight > 0)) {
	1486	graphPtr->height = graphPtr->reqHeight;
	1487	}
	1488	if (argc == 2) {
	1489	result = Blt_PrintDialog(interp, &drawable);
	1490	if (result == TCL_ERROR) {
	1491	return TCL_ERROR;
	1492	}
	1493	if (result == TCL_RETURN) {
	1494	return TCL_OK;
	1495	}
	1496	} else {
	1497	result = Blt_GetOpenPrinter(interp, argv[2], &drawable);
	1498	}
	1499	if (result == TCL_OK) {
	1500	int oldMode;
	1501	HDC hDC;
	1502	double xRatio, yRatio;
	1503	TkWinDC *drawPtr;
	1504	double vportWidth, vportHeight;
	1505
	1506	drawPtr = (TkWinDC *) drawable;
	1507	hDC = drawPtr->hdc;
	1508	Blt_GetPrinterScale(hDC, &xRatio, &yRatio);
	1509	oldMode = SetMapMode(hDC, MM_ISOTROPIC);
	1510	if (oldMode == 0) {
	1511	Tcl_AppendResult(interp, "can't set mode for printer DC: ",
	1512	Blt_LastError(), (char *)NULL);
	1513	return TCL_ERROR;
	1514	}
	1515	vportWidth = graphPtr->width * xRatio;
	1516	vportHeight = graphPtr->height * yRatio;
	1517	SetViewportExtEx(hDC, ROUND(vportWidth), ROUND(vportHeight), NULL);
	1518	SetWindowExtEx(hDC, graphPtr->width, graphPtr->height, NULL);
	1519
	1520	Blt_StartPrintJob(interp, drawable);
	1521	graphPtr->flags \|= RESET_WORLD;
	1522	Blt_DrawGraph(graphPtr, drawable, noBackingStore);
	1523	Blt_EndPrintJob(interp, drawable);
	1524	}
	1525	return result;
	1526	}
	1527
	1528	#endif /* NO_PRINTER */
	1529
	1530	/*
	1531	*----------------------------------------------------------------------
	1532	*
	1533	* StringToFormat --
	1534	*
	1535	* Convert a string represent a node number into its integer
	1536	* value.
	1537	*
	1538	* Results:
	1539	* The return value is a standard Tcl result.
	1540	*
	1541	*----------------------------------------------------------------------
	1542	*/
	1543	/ARGSUSED/
	1544	static int
	1545	StringToFormat(clientData, interp, switchName, string, record, offset)
	1546	ClientData clientData; /* Contains a pointer to the tabset containing
	1547	* this image. */
	1548	Tcl_Interp interp; / Interpreter to send results back to */
	1549	char switchName; / Not used. */
	1550	char string; / String representation */
	1551	char record; / Structure record */
	1552	int offset; /* Offset to field in structure */
	1553	{
	1554	int formatPtr = (int )(record + offset);
	1555	char c;
	1556
	1557	c = string[0];
	1558	if ((c == 'p') && (strcmp(string, "photo") == 0)) {
	1559	*formatPtr = FORMAT_PHOTO;
	1560	#ifdef WIN32
	1561	} else if ((c == 'e') && (strcmp(string, "emf") == 0)) {
	1562	*formatPtr = FORMAT_EMF;
	1563	} else if ((c == 'w') && (strcmp(string, "wmf") == 0)) {
	1564	*formatPtr = FORMAT_WMF;
	1565	#endif /* WIN32 */
	1566	} else {
	1567	#ifdef WIN32
	1568	Tcl_AppendResult(interp, "bad format \"", string,
	1569	"\": should be photo, emf, or wmf.", (char *)NULL);
	1570	#else
	1571	Tcl_AppendResult(interp, "bad format \"", string,
	1572	"\": should be photo.", (char *)NULL);
	1573	#endif /* WIN32 */
	1574	return TCL_ERROR;
	1575	}
	1576	return TCL_OK;
	1577	}
	1578
	1579	#ifdef WIN32
	1580	static int InitMetaFileHeader(
	1581	Tk_Window tkwin,
	1582	int width, int height,
	1583	APMHEADER *mfhPtr)
	1584	{
	1585	unsigned int *p;
	1586	unsigned int sum;
	1587	Screen *screen;
	1588	#define MM_INCH 25.4
	1589	double dpiX, dpiY;
	1590
	1591	mfhPtr->key = 0x9ac6cdd7L;
	1592	mfhPtr->hmf = 0;
	1593	mfhPtr->inch = 1440;
	1594
	1595	screen = Tk_Screen(tkwin);
	1596	dpiX = (WidthOfScreen(screen) * MM_INCH) / WidthMMOfScreen(screen);
	1597	dpiY = (HeightOfScreen(screen) * MM_INCH) / HeightMMOfScreen(screen);
	1598
	1599	mfhPtr->bbox.Left = mfhPtr->bbox.Top = 0;
	1600	mfhPtr->bbox.Bottom = (SHORT)((width * 1440)/ dpiX);
	1601	mfhPtr->bbox.Right = (SHORT)((height * 1440) / dpiY);
	1602	mfhPtr->reserved = 0;
	1603	sum = 0;
	1604	for (p = (unsigned int *)mfhPtr;
	1605	p < (unsigned int *)&(mfhPtr->checksum); p++) {
	1606	sum ^= *p;
	1607	}
	1608	mfhPtr->checksum = sum;
	1609	return TCL_OK;
	1610	}
	1611
	1612	static int
	1613	CreateAPMetaFile(
	1614	Tcl_Interp *interp,
	1615	HANDLE hMetaFile,
	1616	HDC hDC,
	1617	APMHEADER *mfhPtr,
	1618	char *fileName)
	1619	{
	1620	HANDLE hFile;
	1621	HANDLE hMem;
	1622	LPVOID buffer;
	1623	int result;
	1624	DWORD count, nBytes;
	1625
	1626	result = TCL_ERROR;
	1627	hMem = NULL;
	1628	hFile = CreateFile(
	1629	fileName, /* File path */
	1630	GENERIC_WRITE, /* Access mode */
	1631	0, /* No sharing. */
	1632	NULL, /* Security attributes */
	1633	CREATE_ALWAYS, /* Overwrite any existing file */
	1634	FILE_ATTRIBUTE_NORMAL,
	1635	NULL); /* No template file */
	1636	if (hFile == INVALID_HANDLE_VALUE) {
	1637	Tcl_AppendResult(interp, "can't create metafile \"", fileName,
	1638	"\":", Blt_LastError(), (char *)NULL);
	1639	return TCL_ERROR;
	1640	}
	1641	if ((!WriteFile(hFile, (LPVOID)mfhPtr, sizeof(APMHEADER), &count,
	1642	NULL)) \|\| (count != sizeof(APMHEADER))) {
	1643	Tcl_AppendResult(interp, "can't create metafile header to \"",
	1644	fileName, "\":", Blt_LastError(), (char *)NULL);
	1645	goto error;
	1646	}
	1647	nBytes = GetWinMetaFileBits(hMetaFile, 0, NULL, MM_ANISOTROPIC, hDC);
	1648	hMem = GlobalAlloc(GHND, nBytes);
	1649	if (hMem == NULL) {
	1650	Tcl_AppendResult(interp, "can't create allocate global memory:",
	1651	Blt_LastError(), (char *)NULL);
	1652	goto error;
	1653	}
	1654	buffer = (LPVOID)GlobalLock(hMem);
	1655	if (!GetWinMetaFileBits(hMetaFile, nBytes, buffer, MM_ANISOTROPIC, hDC)) {
	1656	Tcl_AppendResult(interp, "can't get metafile bits:",
	1657	Blt_LastError(), (char *)NULL);
	1658	goto error;
	1659	}
	1660	if ((!WriteFile(hFile, buffer, nBytes, &count, NULL)) \|\|
	1661	(count != nBytes)) {
	1662	Tcl_AppendResult(interp, "can't write metafile bits:",
	1663	Blt_LastError(), (char *)NULL);
	1664	goto error;
	1665	}
	1666	result = TCL_OK;
	1667	error:
	1668	CloseHandle(hFile);
	1669	if (hMem != NULL) {
	1670	GlobalUnlock(hMem);
	1671	GlobalFree(hMem);
	1672	}
	1673	return result;
	1674	}
	1675	#endif /WIN32/
	1676
	1677	/*
	1678	* --------------------------------------------------------------------------
	1679	*
	1680	* SnapOp --
	1681	*
	1682	* Snaps a picture of the graph and stores it in the specified image
	1683	*
	1684	* Results:
	1685	* Returns a standard Tcl result. interp->result contains
	1686	* the list of the graph coordinates. If an error occurred
	1687	* while parsing the window positions, TCL_ERROR is returned,
	1688	* then interp->result will contain an error message.
	1689	*
	1690	* -------------------------------------------------------------------------
	1691	*/
	1692	/ARGSUSED/
	1693	static int
	1694	SnapOp(graphPtr, interp, argc, argv)
	1695	Graph graphPtr; / Graph widget record */
	1696	Tcl_Interp *interp;
	1697	int argc; /* Not used. */
	1698	char **argv;
	1699	{
	1700	int result;
	1701	Pixmap drawable;
	1702	int noBackingStore = 0;
	1703	register int i;
	1704	SnapData data;
	1705
	1706	/* .g snap ?switches? name */
	1707	data.height = Tk_Height(graphPtr->tkwin);
	1708	data.width = Tk_Width(graphPtr->tkwin);
	1709	data.format = FORMAT_PHOTO;
	1710	/* Process switches */
	1711	i = Blt_ProcessSwitches(interp, snapSwitches, argc - 2, argv + 2,
	1712	(char *)&data, BLT_SWITCH_OBJV_PARTIAL);
	1713	if (i < 0) {
	1714	return TCL_ERROR;
	1715	}
	1716	i += 2;
	1717	if (i >= argc) {
	1718	Tcl_AppendResult(interp, "missing name argument: should be \"",
	1719	argv[0], "snap ?switches? name\"", (char *)NULL);
	1720	return TCL_ERROR;
	1721	}
	1722	data.name = argv[i];
	1723	if (data.width < 2) {
	1724	data.width = 400;
	1725	}
	1726	if (data.height < 2) {
	1727	data.height = 400;
	1728	}
	1729	/* Always re-compute the layout of the graph before snapping the photo. */
	1730	graphPtr->width = data.width;
	1731	graphPtr->height = data.height;
	1732	Blt_LayoutGraph(graphPtr);
	1733
	1734	drawable = Tk_WindowId(graphPtr->tkwin);
	1735	if (data.format == FORMAT_PHOTO) {
	1736	drawable = Tk_GetPixmap(graphPtr->display, drawable, graphPtr->width,
	1737	graphPtr->height, Tk_Depth(graphPtr->tkwin));
	1738	#ifdef WIN32
	1739	assert(drawable != None);
	1740	#endif
	1741	graphPtr->flags \|= RESET_WORLD;
	1742	Blt_DrawGraph(graphPtr, drawable, noBackingStore);
	1743	result = Blt_SnapPhoto(interp, graphPtr->tkwin, drawable, 0, 0,
	1744	data.width, data.height, data.width, data.height, data.name, 1.0);
	1745	Tk_FreePixmap(graphPtr->display, drawable);
	1746	#ifdef WIN32
	1747	} else if ((data.format == FORMAT_WMF) \|\| (data.format == FORMAT_EMF)) {
	1748	TkWinDC drawableDC;
	1749	TkWinDCState state;
	1750	HDC hRefDC, hDC;
	1751	HENHMETAFILE hMetaFile;
	1752	Tcl_DString dString;
	1753	char *title;
	1754
	1755	hRefDC = TkWinGetDrawableDC(graphPtr->display, drawable, &state);
	1756
	1757	Tcl_DStringInit(&dString);
	1758	Tcl_DStringAppend(&dString, "BLT Graph ", -1);
	1759	Tcl_DStringAppend(&dString, BLT_VERSION, -1);
	1760	Tcl_DStringAppend(&dString, "\0", -1);
	1761	Tcl_DStringAppend(&dString, Tk_PathName(graphPtr->tkwin), -1);
	1762	Tcl_DStringAppend(&dString, "\0", -1);
	1763	title = Tcl_DStringValue(&dString);
	1764	hDC = CreateEnhMetaFile(hRefDC, NULL, NULL, title);
	1765	Tcl_DStringFree(&dString);
	1766
	1767	if (hDC == NULL) {
	1768	Tcl_AppendResult(interp, "can't create metafile: ",
	1769	Blt_LastError(), (char *)NULL);
	1770	return TCL_ERROR;
	1771	}
	1772
	1773	drawableDC.hdc = hDC;
	1774	drawableDC.type = TWD_WINDC;
	1775
	1776	Blt_LayoutGraph(graphPtr);
	1777	graphPtr->flags \|= RESET_WORLD;
	1778	Blt_DrawGraph(graphPtr, (Drawable)&drawableDC, FALSE);
	1779
	1780	hMetaFile = CloseEnhMetaFile(hDC);
	1781	if (strcmp(data.name, "CLIPBOARD") == 0) {
	1782	HWND hWnd;
	1783
	1784	hWnd = Tk_GetHWND(drawable);
	1785	OpenClipboard(hWnd);
	1786	EmptyClipboard();
	1787	SetClipboardData(CF_ENHMETAFILE, hMetaFile);
	1788	CloseClipboard();
	1789	result = TCL_OK;
	1790	} else {
	1791	result = TCL_ERROR;
	1792	if (data.format == FORMAT_WMF) {
	1793	APMHEADER mfh;
	1794
	1795	assert(sizeof(mfh) == 22);
	1796	InitMetaFileHeader(graphPtr->tkwin, data.width, data.height,
	1797	&mfh);
	1798	result = CreateAPMetaFile(interp, hMetaFile, hRefDC, &mfh,
	1799	data.name);
	1800	} else {
	1801	HENHMETAFILE hMetaFile2;
	1802
	1803	hMetaFile2 = CopyEnhMetaFile(hMetaFile, data.name);
	1804	if (hMetaFile2 != NULL) {
	1805	result = TCL_OK;
	1806	DeleteEnhMetaFile(hMetaFile2);
	1807	}
	1808	}
	1809	DeleteEnhMetaFile(hMetaFile);
	1810	}
	1811	TkWinReleaseDrawableDC(drawable, hRefDC, &state);
	1812	#endif /WIN32/
	1813	} else {
	1814	Tcl_AppendResult(interp, "bad snapshot format", (char *)NULL);
	1815	return TCL_ERROR;
	1816	}
	1817	graphPtr->flags = MAP_WORLD;
	1818	Blt_EventuallyRedrawGraph(graphPtr);
	1819	return result;
	1820	}
	1821
	1822	/*
	1823	* --------------------------------------------------------------------------
	1824	*
	1825	* GraphWidgetCmd --
	1826	*
	1827	* This procedure is invoked to process the Tcl command that
	1828	* corresponds to a widget managed by this module. See the user
	1829	* documentation for details on what it does.
	1830	*
	1831	* Results:
	1832	* A standard Tcl result.
	1833	*
	1834	* Side effects:
	1835	* See the user documentation.
	1836	*
	1837	* --------------------------------------------------------------------------
	1838	*/
	1839	static Blt_OpSpec graphOps[] =
	1840	{
	1841	{"axis", 1, (Blt_Op)Blt_VirtualAxisOp, 2, 0, "oper ?args?",},
	1842	{"bar", 2, (Blt_Op)BarOp, 2, 0, "oper ?args?",},
	1843	{"cget", 2, (Blt_Op)CgetOp, 3, 3, "option",},
	1844	{"configure", 2, (Blt_Op)ConfigureOp, 2, 0, "?option value?...",},
	1845	{"crosshairs", 2, (Blt_Op)Blt_CrosshairsOp, 2, 0, "oper ?args?",},
	1846	{"element", 2, (Blt_Op)ElementOp, 2, 0, "oper ?args?",},
	1847	{"extents", 2, (Blt_Op)ExtentsOp, 3, 3, "item",},
	1848	{"grid", 1, (Blt_Op)Blt_GridOp, 2, 0, "oper ?args?",},
	1849	{"inside", 3, (Blt_Op)InsideOp, 4, 4, "winX winY",},
	1850	{"invtransform", 3, (Blt_Op)InvtransformOp, 4, 4, "winX winY",},
	1851	{"legend", 2, (Blt_Op)Blt_LegendOp, 2, 0, "oper ?args?",},
	1852	{"line", 2, (Blt_Op)LineOp, 2, 0, "oper ?args?",},
	1853	{"marker", 2, (Blt_Op)Blt_MarkerOp, 2, 0, "oper ?args?",},
	1854	{"pen", 2, (Blt_Op)Blt_PenOp, 2, 0, "oper ?args?",},
	1855	{"postscript", 2, (Blt_Op)Blt_PostScriptOp, 2, 0, "oper ?args?",},
	1856	#ifndef NO_PRINTER
	1857	{"print1", 2, (Blt_Op)Print1Op, 2, 3, "?printerName?",},
	1858	{"print2", 2, (Blt_Op)Print2Op, 2, 3, "?printerName?",},
	1859	#endif /NO_PRINTER/
	1860	{"snap", 1, (Blt_Op)SnapOp, 3, 0, "?switches? name",},
	1861	{"transform", 1, (Blt_Op)TransformOp, 4, 4, "x y",},
	1862	{"x2axis", 2, (Blt_Op)X2AxisOp, 2, 0, "oper ?args?",},
	1863	{"xaxis", 2, (Blt_Op)XAxisOp, 2, 0, "oper ?args?",},
	1864	{"y2axis", 2, (Blt_Op)Y2AxisOp, 2, 0, "oper ?args?",},
	1865	{"yaxis", 2, (Blt_Op)YAxisOp, 2, 0, "oper ?args?",},
	1866	};
	1867	static int nGraphOps = sizeof(graphOps) / sizeof(Blt_OpSpec);
	1868
	1869	int
	1870	Blt_GraphInstCmdProc(clientData, interp, argc, argv)
	1871	ClientData clientData;
	1872	Tcl_Interp *interp;
	1873	int argc;
	1874	char **argv;
	1875	{
	1876	Blt_Op proc;
	1877	int result;
	1878	Graph *graphPtr = clientData;
	1879
	1880	proc = Blt_GetOp(interp, nGraphOps, graphOps, BLT_OP_ARG1, argc, argv, 0);
	1881	if (proc == NULL) {
	1882	return TCL_ERROR;
	1883	}
	1884	Tcl_Preserve(graphPtr);
	1885	result = (*proc) (graphPtr, interp, argc, argv);
	1886	Tcl_Release(graphPtr);
	1887	return result;
	1888	}
	1889
	1890	/*
	1891	* --------------------------------------------------------------------------
	1892	*
	1893	* NewGraph --
	1894	*
	1895	* Creates a new window and Tcl command representing an
	1896	* instance of a graph widget.
	1897	*
	1898	* Results:
	1899	* A standard Tcl result.
	1900	*
	1901	* Side effects:
	1902	* See the user documentation.
	1903	*
	1904	* --------------------------------------------------------------------------
	1905	*/
	1906	static int
	1907	NewGraph(interp, argc, argv, classUid)
	1908	Tcl_Interp *interp;
	1909	int argc;
	1910	char **argv;
	1911	Blt_Uid classUid;
	1912	{
	1913	Graph *graphPtr;
	1914
	1915	if (argc < 2) {
	1916	Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
	1917	" pathName ?option value?...\"", (char *)NULL);
	1918	return TCL_ERROR;
	1919	}
	1920	graphPtr = CreateGraph(interp, argc, argv, classUid);
	1921	if (graphPtr == NULL) {
	1922	return TCL_ERROR;
	1923	}
	1924	Tcl_SetResult(interp, Tk_PathName(graphPtr->tkwin), TCL_VOLATILE);
	1925	return TCL_OK;
	1926	}
	1927
	1928	/*
	1929	* --------------------------------------------------------------------------
	1930	*
	1931	* GraphCmd --
	1932	*
	1933	* Creates a new window and Tcl command representing an
	1934	* instance of a graph widget.
	1935	*
	1936	* Results:
	1937	* A standard Tcl result.
	1938	*
	1939	* Side effects:
	1940	* See the user documentation.
	1941	*
	1942	* --------------------------------------------------------------------------
	1943	*/
	1944	/ARGSUSED/
	1945	static int
	1946	GraphCmd(clientData, interp, argc, argv)
	1947	ClientData clientData; /* Not used. */
	1948	Tcl_Interp *interp;
	1949	int argc;
	1950	char **argv;
	1951	{
	1952	return NewGraph(interp, argc, argv, bltLineElementUid);
	1953	}
	1954
	1955	/*
	1956	*--------------------------------------------------------------
	1957	*
	1958	* BarchartCmd --
	1959	*
	1960	* Creates a new window and Tcl command representing an
	1961	* instance of a barchart widget.
	1962	*
	1963	* Results:
	1964	* A standard Tcl result.
	1965	*
	1966	* Side effects:
	1967	* See the user documentation.
	1968	*
	1969	*--------------------------------------------------------------
	1970	*/
	1971	/ARGSUSED/
	1972	static int
	1973	BarchartCmd(clientData, interp, argc, argv)
	1974	ClientData clientData; /* Not used. */
	1975	Tcl_Interp *interp;
	1976	int argc;
	1977	char **argv;
	1978	{
	1979	return NewGraph(interp, argc, argv, bltBarElementUid);
	1980	}
	1981
	1982	/*
	1983	*--------------------------------------------------------------
	1984	*
	1985	* StripchartCmd --
	1986	*
	1987	* Creates a new window and Tcl command representing an
	1988	* instance of a barchart widget.
	1989	*
	1990	* Results:
	1991	* A standard Tcl result.
	1992	*
	1993	* Side effects:
	1994	* See the user documentation.
	1995	*
	1996	*--------------------------------------------------------------
	1997	*/
	1998	/ARGSUSED/
	1999	static int
	2000	StripchartCmd(clientData, interp, argc, argv)
	2001	ClientData clientData; /* Not used. */
	2002	Tcl_Interp *interp;
	2003	int argc;
	2004	char **argv;
	2005	{
	2006	return NewGraph(interp, argc, argv, bltStripElementUid);
	2007	}
	2008
	2009	/*
	2010	* -----------------------------------------------------------------------
	2011	*
	2012	* DrawMargins --
	2013	*
	2014	* Draws the exterior region of the graph (axes, ticks, titles, etc)
	2015	* onto a pixmap. The interior region is defined by the given
	2016	* rectangle structure.
	2017	*
	2018	* ---------------------------------
	2019	* \| \|
	2020	* \| rectArr[0] \|
	2021	* \| \|
	2022	* ---------------------------------
	2023	* \| \|top right\| \|
	2024	* \| \| \| \|
	2025	* \| \| \| \|
	2026	* \| [1] \| \| [2] \|
	2027	* \| \| \| \|
	2028	* \| \| \| \|
	2029	* \| \| \| \|
	2030	* \| \| \| \|
	2031	* \| \| \| \|
	2032	* \| \|left bottom\| \|
	2033	* ---------------------------------
	2034	* \| \|
	2035	* \| rectArr[3] \|
	2036	* \| \|
	2037	* ---------------------------------
	2038	*
	2039	* X coordinate axis
	2040	* Y coordinate axis
	2041	* legend
	2042	* interior border
	2043	* exterior border
	2044	* titles (X and Y axis, graph)
	2045	*
	2046	* Returns:
	2047	* None.
	2048	*
	2049	* Side Effects:
	2050	* Exterior of graph is displayed in its window.
	2051	*
	2052	* -----------------------------------------------------------------------
	2053	*/
	2054	static void
	2055	DrawMargins(graphPtr, drawable)
	2056	Graph *graphPtr;
	2057	Drawable drawable; /* Pixmap or window to draw into */
	2058	{
	2059	XRectangle rects[4];
	2060	/*
	2061	* Draw the four outer rectangles which encompass the plotting
	2062	* surface. This clears the surrounding area and clips the plot.
	2063	*/
	2064	rects[0].x = rects[0].y = rects[3].x = rects[1].x = 0;
	2065	rects[0].width = rects[3].width = (short int)graphPtr->width;
	2066	rects[0].height = (short int)graphPtr->top;
	2067	rects[3].y = graphPtr->bottom;
	2068	rects[3].height = graphPtr->height - graphPtr->bottom;
	2069	rects[2].y = rects[1].y = graphPtr->top;
	2070	rects[1].width = graphPtr->left;
	2071	rects[2].height = rects[1].height = graphPtr->bottom - graphPtr->top;
	2072	rects[2].x = graphPtr->right;
	2073	rects[2].width = graphPtr->width - graphPtr->right;
	2074
	2075	if (graphPtr->tile != NULL) {
	2076	Blt_SetTileOrigin(graphPtr->tkwin, graphPtr->tile, 0, 0);
	2077	Blt_TileRectangles(graphPtr->tkwin, drawable, graphPtr->tile, rects, 4);
	2078	} else {
	2079	XFillRectangles(graphPtr->display, drawable, graphPtr->fillGC, rects,
	2080	4);
	2081	}
	2082
	2083	/* Draw 3D border around the plotting area */
	2084
	2085	if (graphPtr->plotBorderWidth > 0) {
	2086	int x, y, width, height;
	2087
	2088	x = graphPtr->left - graphPtr->plotBorderWidth;
	2089	y = graphPtr->top - graphPtr->plotBorderWidth;
	2090	width = (graphPtr->right - graphPtr->left) +
	2091	(2 * graphPtr->plotBorderWidth);
	2092	height = (graphPtr->bottom - graphPtr->top) +
	2093	(2 * graphPtr->plotBorderWidth);
	2094	Blt_Draw3DRectangle(graphPtr->tkwin, drawable, graphPtr->border, x, y,
	2095	width, height, graphPtr->plotBorderWidth, graphPtr->plotRelief);
	2096	}
	2097	if (Blt_LegendSite(graphPtr->legend) & LEGEND_IN_MARGIN) {
	2098	/* Legend is drawn on one of the graph margins */
	2099	Blt_DrawLegend(graphPtr->legend, drawable);
	2100	}
	2101	if (graphPtr->title != NULL) {
	2102	Blt_DrawText(graphPtr->tkwin, drawable, graphPtr->title,
	2103	&graphPtr->titleTextStyle, graphPtr->titleX, graphPtr->titleY);
	2104	}
	2105	Blt_DrawAxes(graphPtr, drawable);
	2106
	2107	}
	2108
	2109	/*
	2110	*----------------------------------------------------------------------
	2111	*
	2112	* DrawPlotRegion --
	2113	*
	2114	* Draws the contents of the plotting area. This consists of
	2115	* the elements, markers (draw under elements), axis limits,
	2116	* grid lines, and possibly the legend. Typically, the output
	2117	* will be cached into a backing store pixmap, so that redraws
	2118	* can occur quickly.
	2119	*
	2120	* Results:
	2121	* None.
	2122	*
	2123	*----------------------------------------------------------------------
	2124	*/
	2125	static void
	2126	DrawPlotRegion(graphPtr, drawable)
	2127	Graph *graphPtr;
	2128	Drawable drawable; /* Pixmap or window to draw into */
	2129	{
	2130	/* Clear the background of the plotting area. */
	2131	XFillRectangle(graphPtr->display, drawable, graphPtr->plotFillGC,
	2132	graphPtr->left, graphPtr->top, graphPtr->right - graphPtr->left + 1,
	2133	graphPtr->bottom - graphPtr->top + 1);
	2134
	2135	/* Draw the elements, markers, legend, and axis limits. */
	2136
	2137	if (!graphPtr->gridPtr->hidden) {
	2138	Blt_DrawGrid(graphPtr, drawable);
	2139	}
	2140	Blt_DrawMarkers(graphPtr, drawable, MARKER_UNDER);
	2141	if ((Blt_LegendSite(graphPtr->legend) & LEGEND_IN_PLOT) &&
	2142	(!Blt_LegendIsRaised(graphPtr->legend))) {
	2143	Blt_DrawLegend(graphPtr->legend, drawable);
	2144	}
	2145	Blt_DrawAxisLimits(graphPtr, drawable);
	2146	Blt_DrawElements(graphPtr, drawable);
	2147	}
	2148
	2149	void
	2150	Blt_LayoutGraph(graphPtr)
	2151	Graph *graphPtr;
	2152	{
	2153	if (graphPtr->flags & RESET_AXES) {
	2154	Blt_ResetAxes(graphPtr);
	2155	}
	2156	if (graphPtr->flags & LAYOUT_NEEDED) {
	2157	Blt_LayoutMargins(graphPtr);
	2158	graphPtr->flags &= ~LAYOUT_NEEDED;
	2159	}
	2160	/* Compute coordinate transformations for graph components */
	2161	if ((graphPtr->vRange > 1) && (graphPtr->hRange > 1)) {
	2162	if (graphPtr->flags & MAP_WORLD) {
	2163	Blt_MapAxes(graphPtr);
	2164	}
	2165	Blt_MapElements(graphPtr);
	2166	Blt_MapMarkers(graphPtr);
	2167	Blt_MapGrid(graphPtr);
	2168	graphPtr->flags &= ~(MAP_ALL);
	2169	}
	2170	}
	2171
	2172	void
	2173	Blt_DrawGraph(graphPtr, drawable, backingStore)
	2174	Graph *graphPtr;
	2175	Drawable drawable; /* Pixmap or window to draw into */
	2176	int backingStore; /* If non-zero, use backing store for
	2177	* plotting area. */
	2178	{
	2179	if (backingStore) {
	2180	/*
	2181	* Create another pixmap to save elements if one doesn't
	2182	* already exist or the size of the window has changed.
	2183	*/
	2184	if ((graphPtr->backPixmap == None) \|\|
	2185	(graphPtr->backWidth != graphPtr->width) \|\|
	2186	(graphPtr->backHeight != graphPtr->height)) {
	2187
	2188	if (graphPtr->backPixmap != None) {
	2189	Tk_FreePixmap(graphPtr->display, graphPtr->backPixmap);
	2190	}
	2191	graphPtr->backPixmap = Tk_GetPixmap(graphPtr->display,
	2192	Tk_WindowId(graphPtr->tkwin), graphPtr->width,
	2193	graphPtr->height, Tk_Depth(graphPtr->tkwin));
	2194	graphPtr->backWidth = graphPtr->width;
	2195	graphPtr->backHeight = graphPtr->height;
	2196	graphPtr->flags \|= REDRAW_BACKING_STORE;
	2197	}
	2198	if (graphPtr->flags & REDRAW_BACKING_STORE) {
	2199
	2200	/* The backing store is new or out-of-date. */
	2201
	2202	DrawPlotRegion(graphPtr, graphPtr->backPixmap);
	2203	graphPtr->flags &= ~REDRAW_BACKING_STORE;
	2204	}
	2205
	2206	/* Copy the pixmap to the one used for drawing the entire graph. */
	2207
	2208	XCopyArea(graphPtr->display, graphPtr->backPixmap, drawable,
	2209	graphPtr->drawGC, graphPtr->left, graphPtr->top,
	2210	(graphPtr->right - graphPtr->left + 1),
	2211	(graphPtr->bottom - graphPtr->top + 1),
	2212	graphPtr->left, graphPtr->top);
	2213	} else {
	2214	DrawPlotRegion(graphPtr, drawable);
	2215	}
	2216
	2217	/* Draw markers above elements */
	2218	Blt_DrawMarkers(graphPtr, drawable, MARKER_ABOVE);
	2219	Blt_DrawActiveElements(graphPtr, drawable);
	2220
	2221	if (graphPtr->flags & DRAW_MARGINS) {
	2222	DrawMargins(graphPtr, drawable);
	2223	}
	2224	if ((Blt_LegendSite(graphPtr->legend) & LEGEND_IN_PLOT) &&
	2225	(Blt_LegendIsRaised(graphPtr->legend))) {
	2226	Blt_DrawLegend(graphPtr->legend, drawable);
	2227	}
	2228	/* Draw 3D border just inside of the focus highlight ring. */
	2229	if ((graphPtr->borderWidth > 0) && (graphPtr->relief != TK_RELIEF_FLAT)) {
	2230	Blt_Draw3DRectangle(graphPtr->tkwin, drawable, graphPtr->border,
	2231	graphPtr->highlightWidth, graphPtr->highlightWidth,
	2232	graphPtr->width - 2 * graphPtr->highlightWidth,
	2233	graphPtr->height - 2 * graphPtr->highlightWidth,
	2234	graphPtr->borderWidth, graphPtr->relief);
	2235	}
	2236	/* Draw focus highlight ring. */
	2237	if ((graphPtr->highlightWidth > 0) && (graphPtr->flags & GRAPH_FOCUS)) {
	2238	GC gc;
	2239
	2240	gc = Tk_GCForColor(graphPtr->highlightColor, drawable);
	2241	Tk_DrawFocusHighlight(graphPtr->tkwin, gc, graphPtr->highlightWidth,
	2242	drawable);
	2243	}
	2244	}
	2245
	2246	static void
	2247	UpdateMarginTraces(graphPtr)
	2248	Graph *graphPtr;
	2249	{
	2250	Margin *marginPtr;
	2251	int size;
	2252	register int i;
	2253
	2254	for (i = 0; i < 4; i++) {
	2255	marginPtr = graphPtr->margins + i;
	2256	if (marginPtr->varName != NULL) { /* Trigger variable traces */
	2257	if ((marginPtr->site == MARGIN_LEFT) \|\|
	2258	(marginPtr->site == MARGIN_RIGHT)) {
	2259	size = marginPtr->width;
	2260	} else {
	2261	size = marginPtr->height;
	2262	}
	2263	Tcl_SetVar(graphPtr->interp, marginPtr->varName, Blt_Itoa(size),
	2264	TCL_GLOBAL_ONLY);
	2265	}
	2266	}
	2267	}
	2268
	2269	/*
	2270	*----------------------------------------------------------------------
	2271	*
	2272	* DisplayGraph --
	2273	*
	2274	* This procedure is invoked to display a graph widget.
	2275	*
	2276	* Results:
	2277	* None.
	2278	*
	2279	* Side effects:
	2280	* Commands are output to X to display the graph in its
	2281	* current mode.
	2282	*
	2283	*----------------------------------------------------------------------
	2284	*/
	2285	static void
	2286	DisplayGraph(clientData)
	2287	ClientData clientData;
	2288	{
	2289	Graph *graphPtr = clientData;
	2290	Pixmap drawable;
	2291
	2292	graphPtr->flags &= ~REDRAW_PENDING;
	2293	if (graphPtr->tkwin == NULL) {
	2294	return; /* Window destroyed (should not get here) */
	2295	}
	2296	#ifdef notdef
	2297	fprintf(stderr, "Calling DisplayGraph(%s)\n", Tk_PathName(graphPtr->tkwin));
	2298	#endif
	2299	if (Blt_GraphUpdateNeeded(graphPtr)) {
	2300	/*
	2301	* One of the elements of the graph has a vector notification
	2302	* pending. This means that the vector will eventually notify
	2303	* the graph that its data has changed. Since the graph uses
	2304	* the actual vector (not a copy) we need to keep in-sync.
	2305	* Therefore don't draw right now but wait until we've been
	2306	* notified before redrawing.
	2307	*/
	2308	return;
	2309	}
	2310	graphPtr->width = Tk_Width(graphPtr->tkwin);
	2311	graphPtr->height = Tk_Height(graphPtr->tkwin);
	2312	Blt_LayoutGraph(graphPtr);
	2313	Blt_UpdateCrosshairs(graphPtr);
	2314	if (!Tk_IsMapped(graphPtr->tkwin)) {
	2315	/* The graph's window isn't displayed, so don't bother
	2316	* drawing anything. By getting this far, we've at least
	2317	* computed the coordinates of the graph's new layout. */
	2318	return;
	2319	}
	2320
	2321	/* Disable crosshairs before redisplaying to the screen */
	2322	Blt_DisableCrosshairs(graphPtr);
	2323	/*
	2324	* Create a pixmap the size of the window for double buffering.
	2325	*/
	2326	if (graphPtr->doubleBuffer) {
	2327	drawable = Tk_GetPixmap(graphPtr->display, Tk_WindowId(graphPtr->tkwin),
	2328	graphPtr->width, graphPtr->height, Tk_Depth(graphPtr->tkwin));
	2329	} else {
	2330	drawable = Tk_WindowId(graphPtr->tkwin);
	2331	}
	2332	#ifdef WIN32
	2333	assert(drawable != None);
	2334	#endif
	2335	Blt_DrawGraph(graphPtr, drawable,
	2336	graphPtr->backingStore && graphPtr->doubleBuffer);
	2337	if (graphPtr->flags & DRAW_MARGINS) {
	2338	XCopyArea(graphPtr->display, drawable, Tk_WindowId(graphPtr->tkwin),
	2339	graphPtr->drawGC, 0, 0, graphPtr->width, graphPtr->height, 0, 0);
	2340	} else {
	2341	XCopyArea(graphPtr->display, drawable, Tk_WindowId(graphPtr->tkwin),
	2342	graphPtr->drawGC, graphPtr->left, graphPtr->top,
	2343	(graphPtr->right - graphPtr->left + 1),
	2344	(graphPtr->bottom - graphPtr->top + 1),
	2345	graphPtr->left, graphPtr->top);
	2346	}
	2347	if (graphPtr->doubleBuffer) {
	2348	Tk_FreePixmap(graphPtr->display, drawable);
	2349	}
	2350	Blt_EnableCrosshairs(graphPtr);
	2351	graphPtr->flags &= ~RESET_WORLD;
	2352	UpdateMarginTraces(graphPtr);
	2353	}
	2354
	2355	/LINTLIBRARY/
	2356	int
	2357	Blt_GraphInit(interp)
	2358	Tcl_Interp *interp;
	2359	{
	2360	static Blt_CmdSpec cmdSpecs[] =
	2361	{
	2362	{"graph", GraphCmd,},
	2363	{"barchart", BarchartCmd,},
	2364	{"stripchart", StripchartCmd,},
	2365	};
	2366	bltBarElementUid = (Blt_Uid)Tk_GetUid("BarElement");
	2367	bltLineElementUid = (Blt_Uid)Tk_GetUid("LineElement");
	2368	bltStripElementUid = (Blt_Uid)Tk_GetUid("StripElement");
	2369	bltContourElementUid = (Blt_Uid)Tk_GetUid("ContourElement");
	2370
	2371	bltLineMarkerUid = (Blt_Uid)Tk_GetUid("LineMarker");
	2372	bltBitmapMarkerUid = (Blt_Uid)Tk_GetUid("BitmapMarker");
	2373	bltImageMarkerUid = (Blt_Uid)Tk_GetUid("ImageMarker");
	2374	bltTextMarkerUid = (Blt_Uid)Tk_GetUid("TextMarker");
	2375	bltPolygonMarkerUid = (Blt_Uid)Tk_GetUid("PolygonMarker");
	2376	bltWindowMarkerUid = (Blt_Uid)Tk_GetUid("WindowMarker");
	2377
	2378	bltXAxisUid = (Blt_Uid)Tk_GetUid("X");
	2379	bltYAxisUid = (Blt_Uid)Tk_GetUid("Y");
	2380
	2381	return Blt_InitCmds(interp, "blt", cmdSpecs, 3);
	2382	}
	2383
	2384	Graph *
	2385	Blt_GetGraphFromWindowData(tkwin)
	2386	Tk_Window tkwin;
	2387	{
	2388	Graph *graphPtr;
	2389
	2390	while (tkwin != NULL) {
	2391	graphPtr = (Graph *)Blt_GetWindowInstanceData(tkwin);
	2392	if (graphPtr != NULL) {
	2393	return graphPtr;
	2394	}
	2395	tkwin = Tk_Parent(tkwin);
	2396	}
	2397	return NULL;
	2398	}
	2399
	2400	int
	2401	Blt_GraphType(graphPtr)
	2402	Graph *graphPtr;
	2403	{
	2404	if (graphPtr->classUid == bltLineElementUid) {
	2405	return GRAPH;
	2406	} else if (graphPtr->classUid == bltBarElementUid) {
	2407	return BARCHART;
	2408	} else if (graphPtr->classUid == bltStripElementUid) {
	2409	return STRIPCHART;
	2410	}
	2411	return 0;
	2412	}

Note: See TracBrowser for help on using the repository browser.

Context Navigation

source: trunk/kitgen/8.x/blt/generic/bltGraph.c@ 187

Download in other formats: