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Diffstat (limited to 'libXaw/src/StripChart.c')
| -rw-r--r-- | libXaw/src/StripChart.c | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/libXaw/src/StripChart.c b/libXaw/src/StripChart.c new file mode 100644 index 000000000..ada85f172 --- /dev/null +++ b/libXaw/src/StripChart.c @@ -0,0 +1,579 @@ +/* $Xorg: StripChart.c,v 1.4 2001/02/09 02:03:46 xorgcvs Exp $ */ + +/*********************************************************** + +Copyright 1987, 1988, 1994, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + + +Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ +/* $XFree86: xc/lib/Xaw/StripChart.c,v 1.7 2001/01/17 19:42:32 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <X11/IntrinsicP.h> +#include <X11/StringDefs.h> +#include <X11/Xfuncs.h> +#include <X11/Xaw/StripCharP.h> +#include <X11/Xaw/XawInit.h> +#include "Private.h" + +#define MS_PER_SEC 1000 + +/* + * Class Methods + */ +static void XawStripChartInitialize(Widget, Widget, ArgList, Cardinal*); +static void XawStripChartDestroy(Widget); +static void XawStripChartRedisplay(Widget, XEvent*, Region); +static void XawStripChartResize(Widget); +static Boolean XawStripChartSetValues(Widget, Widget, Widget, + ArgList, Cardinal*); + +/* + * Prototypes + */ +static void CreateGC(StripChartWidget, unsigned int); +static void DestroyGC(StripChartWidget, unsigned int); +static void draw_it(XtPointer, XtIntervalId*); +static void MoveChart(StripChartWidget, Bool); +static int repaint_window(StripChartWidget, int, int); + +/* + * Initialization + */ +#define offset(field) XtOffsetOf(StripChartRec, field) +static XtResource resources[] = { + { + XtNwidth, + XtCWidth, + XtRDimension, + sizeof(Dimension), + offset(core.width), + XtRImmediate, + (XtPointer) + 120 + }, + { + XtNheight, + XtCHeight, + XtRDimension, + sizeof(Dimension), + offset(core.height), + XtRImmediate, + (XtPointer)120 + }, + { + XtNupdate, + XtCInterval, + XtRInt, + sizeof(int), + offset(strip_chart.update), + XtRImmediate, + (XtPointer)10 + }, + { + XtNminScale, + XtCScale, + XtRInt, + sizeof(int), + offset(strip_chart.min_scale), + XtRImmediate, + (XtPointer)1 + }, + { + XtNforeground, + XtCForeground, + XtRPixel, + sizeof(Pixel), + offset(strip_chart.fgpixel), + XtRString, + XtDefaultForeground + }, + { + XtNhighlight, + XtCForeground, + XtRPixel, + sizeof(Pixel), + offset(strip_chart.hipixel), + XtRString, + XtDefaultForeground + }, + { + XtNgetValue, + XtCCallback, + XtRCallback, + sizeof(XtPointer), + offset(strip_chart.get_value), + XtRImmediate, + NULL + }, + { + XtNjumpScroll, + XtCJumpScroll, + XtRInt, + sizeof(int), + offset(strip_chart.jump_val), + XtRImmediate, + (XtPointer)DEFAULT_JUMP + }, +}; +#undef offset + +StripChartClassRec stripChartClassRec = { + /* core */ + { + (WidgetClass)&simpleClassRec, /* superclass */ + "StripChart", /* class_name */ + sizeof(StripChartRec), /* widget_size */ + XawInitializeWidgetSet, /* class_initialize */ + NULL, /* class_part_initialize */ + False, /* class_inited */ + XawStripChartInitialize, /* initialize */ + NULL, /* initialize_hook */ + XtInheritRealize, /* realize */ + NULL, /* actions */ + 0, /* num_actions */ + resources, /* resources */ + XtNumber(resources), /* num_resources */ + NULLQUARK, /* xrm_class */ + True, /* compress_motion */ + XtExposeCompressMultiple /* compress_exposure */ + | XtExposeGraphicsExposeMerged, + True, /* compress_enterleave */ + False, /* visible_interest */ + XawStripChartDestroy, /* destroy */ + XawStripChartResize, /* resize */ + XawStripChartRedisplay, /* expose */ + XawStripChartSetValues, /* set_values */ + NULL, /* set_values_hook */ + NULL, /* set_values_almost */ + NULL, /* get_values_hook */ + NULL, /* accept_focus */ + XtVersion, /* version */ + NULL, /* callback_private */ + NULL, /* tm_table */ + XtInheritQueryGeometry, /* query_geometry */ + XtInheritDisplayAccelerator, /* display_accelerator */ + NULL, /* extension */ + }, + /* simple */ + { + XtInheritChangeSensitive, /* change_sensitive */ + } +}; + +WidgetClass stripChartWidgetClass = (WidgetClass)&stripChartClassRec; + +/* + * Implementation + */ +/* + * Function: + * CreateGC + * + * Parameters: + * w - strip chart widget + * which - GC's to create + * + * Description: + * Creates the GC's + */ +static void +CreateGC(StripChartWidget w, unsigned int which) +{ + XGCValues myXGCV; + + if (which & FOREGROUND) { + myXGCV.foreground = w->strip_chart.fgpixel; + w->strip_chart.fgGC = XtGetGC((Widget)w, GCForeground, &myXGCV); + } + + if (which & HIGHLIGHT) { + myXGCV.foreground = w->strip_chart.hipixel; + w->strip_chart.hiGC = XtGetGC((Widget)w, GCForeground, &myXGCV); + } +} + +/* + * Function: + * DestroyGC + * + * Arguments: + * w - strip chart widget + * which - which GC's to destroy + * + * Description: + * Destroys the GC's + */ +static void +DestroyGC(StripChartWidget w, unsigned int which) +{ + if (which & FOREGROUND) + XtReleaseGC((Widget)w, w->strip_chart.fgGC); + + if (which & HIGHLIGHT) + XtReleaseGC((Widget)w, w->strip_chart.hiGC); +} + +/*ARGSUSED*/ +static void +XawStripChartInitialize(Widget greq, Widget gnew, + ArgList args, Cardinal *num_args) +{ + StripChartWidget w = (StripChartWidget)gnew; + + if (w->strip_chart.update > 0) + w->strip_chart.interval_id = + XtAppAddTimeOut(XtWidgetToApplicationContext(gnew), + w->strip_chart.update * MS_PER_SEC, + draw_it, (XtPointer)gnew); + CreateGC(w, ALL_GCS); + + w->strip_chart.scale = w->strip_chart.min_scale; + w->strip_chart.interval = 0; + w->strip_chart.max_value = 0.0; + w->strip_chart.points = NULL; + XawStripChartResize(gnew); +} + +static void +XawStripChartDestroy(Widget gw) +{ + StripChartWidget w = (StripChartWidget)gw; + + if (w->strip_chart.update > 0) + XtRemoveTimeOut(w->strip_chart.interval_id); + if (w->strip_chart.points) + XtFree((char *)w->strip_chart.points); + DestroyGC(w, ALL_GCS); +} + +/* + * NOTE: This function really needs to recieve graphics exposure + * events, but since this is not easily supported until R4 I am + * going to hold off until then. + */ +/*ARGSUSED*/ +static void +XawStripChartRedisplay(Widget w, XEvent *event, Region region) +{ + if (event->type == GraphicsExpose) + (void)repaint_window((StripChartWidget)w, event->xgraphicsexpose.x, + event->xgraphicsexpose.width); + else + (void)repaint_window((StripChartWidget)w, event->xexpose.x, + event->xexpose.width); +} + +/*ARGSUSED*/ +static void +draw_it(XtPointer client_data, XtIntervalId *id) +{ + StripChartWidget w = (StripChartWidget)client_data; + double value; + + if (w->strip_chart.update > 0) + w->strip_chart.interval_id = + XtAppAddTimeOut(XtWidgetToApplicationContext((Widget)w), + w->strip_chart.update * MS_PER_SEC,draw_it, + client_data); + + if (w->strip_chart.interval >= XtWidth(w)) + MoveChart((StripChartWidget)w, True); + + /* Get the value, stash the point and draw corresponding line */ + if (w->strip_chart.get_value == NULL) + return; + + XtCallCallbacks((Widget)w, XtNgetValue, (XtPointer)&value); + + /* + * Keep w->strip_chart.max_value up to date, and if this data + * point is off the graph, change the scale to make it fit + */ + if (value > w->strip_chart.max_value) { + w->strip_chart.max_value = value; + if (XtIsRealized((Widget)w) && + w->strip_chart.max_value > w->strip_chart.scale) { + XClearWindow(XtDisplay(w), XtWindow(w)); + w->strip_chart.interval = repaint_window(w, 0, XtWidth(w)); + } + } + + w->strip_chart.valuedata[w->strip_chart.interval] = value; + if (XtIsRealized((Widget)w)) { + int y = (int)(XtHeight(w) - XtHeight(w) * value + / w->strip_chart.scale); + + XFillRectangle(XtDisplay(w), XtWindow(w), w->strip_chart.fgGC, + w->strip_chart.interval, y, + 1, XtHeight(w) - y); + + /* + * Fill in the graph lines we just painted over + */ + if (w->strip_chart.points != NULL) { + w->strip_chart.points[0].x = w->strip_chart.interval; + XDrawPoints(XtDisplay(w), XtWindow(w), w->strip_chart.hiGC, + w->strip_chart.points, w->strip_chart.scale - 1, + CoordModePrevious); + } + + XFlush(XtDisplay(w)); /* Flush output buffers */ + } + w->strip_chart.interval++; /* Next point */ +} + +/* Blts data according to current size, then redraws the stripChart window + * Next represents the number of valid points in data. Returns the (possibly) + * adjusted value of next. If next is 0, this routine draws an empty window + * (scale - 1 lines for graph). If next is less than the current window width, + * the returned value is identical to the initial value of next and data is + * unchanged. Otherwise keeps half a window's worth of data. If data is + * changed, then w->strip_chart.max_value is updated to reflect the + * largest data point + */ +static int +repaint_window(StripChartWidget w, int left, int width) +{ + int i, j; + int next = w->strip_chart.interval; + int scale = w->strip_chart.scale; + int scalewidth = 0; + + /* Compute the minimum scale required to graph the data, but don't go + lower than min_scale */ + if (w->strip_chart.interval != 0 || scale <= w->strip_chart.max_value) + scale = w->strip_chart.max_value + 1; + if (scale < w->strip_chart.min_scale) + scale = w->strip_chart.min_scale; + + if (scale != w->strip_chart.scale) { + w->strip_chart.scale = scale; + left = 0; + width = next; + scalewidth = XtWidth(w); + + XawStripChartResize((Widget)w); + + if (XtIsRealized((Widget)w)) + XClearWindow(XtDisplay(w), XtWindow(w)); + } + + if (XtIsRealized((Widget)w)) { + Display *dpy = XtDisplay(w); + Window win = XtWindow(w); + + width += left - 1; + if (!scalewidth) + scalewidth = width; + + if (next < ++width) + width = next; + + /* Draw data point lines */ + for (i = left; i < width; i++) { + int y = XtHeight(w) - (XtHeight(w) * w->strip_chart.valuedata[i]) + / w->strip_chart.scale; + + XFillRectangle(dpy, win, w->strip_chart.fgGC, + i, y, 1, XtHeight(w) - y); + } + + /* Draw graph reference lines */ + for (i = 1; i < w->strip_chart.scale; i++) { + j = i * ((int)XtHeight(w) / w->strip_chart.scale); + XDrawLine(dpy, win, w->strip_chart.hiGC, left, j, scalewidth, j); + } + } + return (next); +} + +/* + * Function: + * MoveChart + * + * Parameters: + * w - chart widget + * blit - blit the bits? + * + * Description: + * Moves the chart over when it would run off the end. + */ +static void +MoveChart(StripChartWidget w, Bool blit) +{ + double old_max; + int left, i, j; + int next = w->strip_chart.interval; + + if (!XtIsRealized((Widget)w)) + return; + + if (w->strip_chart.jump_val < 0) + w->strip_chart.jump_val = DEFAULT_JUMP; + if (w->strip_chart.jump_val == DEFAULT_JUMP) + j = XtWidth(w) >> 1; + else { + j = (int)XtWidth(w) - w->strip_chart.jump_val; + if (j < 0) + j = 0; + } + + (void)memmove((char *)w->strip_chart.valuedata, + (char *)(w->strip_chart.valuedata + next - j), + j * sizeof(double)); + next = w->strip_chart.interval = j; + + /* + * Since we just lost some data, recompute the + * w->strip_chart.max_value + */ + old_max = w->strip_chart.max_value; + w->strip_chart.max_value = 0.0; + for (i = 0; i < next; i++) { + if (w->strip_chart.valuedata[i] > w->strip_chart.max_value) + w->strip_chart.max_value = w->strip_chart.valuedata[i]; + } + + if (!blit) + return; + + if (old_max != w->strip_chart.max_value) { + XClearWindow(XtDisplay(w), XtWindow(w)); + repaint_window(w, 0, XtWidth(w)); + return; + } + + XCopyArea(XtDisplay((Widget)w), XtWindow((Widget)w), XtWindow((Widget)w), + w->strip_chart.hiGC, (int)XtWidth(w) - j, 0, j, XtHeight(w), 0, 0); + + XClearArea(XtDisplay((Widget)w), XtWindow((Widget)w), + j, 0, XtWidth(w) - j, XtHeight(w), False); + + /* Draw graph reference lines */ + left = j; + for (i = 1; i < w->strip_chart.scale; i++) { + j = i * (XtHeight(w) / w->strip_chart.scale); + XDrawLine(XtDisplay((Widget)w), XtWindow((Widget)w), + w->strip_chart.hiGC, left, j, XtWidth(w), j); + } +} + +/*ARGSUSED*/ +static Boolean +XawStripChartSetValues(Widget current, Widget request, Widget cnew, + ArgList args, Cardinal *num_args) +{ + StripChartWidget old = (StripChartWidget)current; + StripChartWidget w = (StripChartWidget)cnew; + Bool ret_val = False; + unsigned int new_gc = NO_GCS; + + if (w->strip_chart.update != old->strip_chart.update) { + if (old->strip_chart.update > 0) + XtRemoveTimeOut(old->strip_chart.interval_id); + if (w->strip_chart.update > 0) + w->strip_chart.interval_id = + XtAppAddTimeOut(XtWidgetToApplicationContext(cnew), + w->strip_chart.update * MS_PER_SEC, + draw_it, (XtPointer)w); + } + + if (w->strip_chart.min_scale > w->strip_chart.max_value + 1) + ret_val = True; + + if (w->strip_chart.fgpixel != old->strip_chart.fgpixel) { + new_gc |= FOREGROUND; + ret_val = True; + } + + if (w->strip_chart.hipixel != old->strip_chart.hipixel) { + new_gc |= HIGHLIGHT; + ret_val = True; + } + + DestroyGC(old, new_gc); + CreateGC(w, new_gc); + + return (ret_val); +} + +/* + * Function: + * XawStripChartResize + * + * Parameters: + * w - StripChart widget + * + * Description: + * Sets up the polypoint that will be used to draw in the graph lines. + */ +static void +XawStripChartResize(Widget widget) +{ + StripChartWidget w = (StripChartWidget)widget; + XPoint *points; + Cardinal size; + int i; + + if (w->strip_chart.scale <= 1) { + XtFree((char *)w->strip_chart.points); + w->strip_chart.points = NULL; + return; + } + + size = sizeof(XPoint) * (w->strip_chart.scale - 1); + + points = (XPoint *)XtRealloc((XtPointer)w->strip_chart.points, size); + w->strip_chart.points = points; + + /* Draw graph reference lines into clip mask */ + + for (i = 1; i < w->strip_chart.scale; i++) { + points[i - 1].x = 0; + points[i - 1].y = XtHeight(w) / w->strip_chart.scale; + } +} |