summaryrefslogtreecommitdiffstats
path: root/generic/tkbltGraph.C
diff options
context:
space:
mode:
Diffstat (limited to 'generic/tkbltGraph.C')
-rw-r--r--generic/tkbltGraph.C1457
1 files changed, 1457 insertions, 0 deletions
diff --git a/generic/tkbltGraph.C b/generic/tkbltGraph.C
new file mode 100644
index 0000000..bb1707d
--- /dev/null
+++ b/generic/tkbltGraph.C
@@ -0,0 +1,1457 @@
+/*
+ * Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+ * This code has been modified under the terms listed below and is made
+ * available under the same terms.
+ */
+
+/*
+ * Copyright 1991-2004 George A Howlett.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#include <float.h>
+
+#include <tkInt.h>
+
+#include "tkbltGraph.h"
+#include "tkbltGraphOp.h"
+
+#include "tkbltGrBind.h"
+#include "tkbltGrAxis.h"
+#include "tkbltGrAxisOp.h"
+#include "tkbltGrXAxisOp.h"
+#include "tkbltGrPen.h"
+#include "tkbltGrPenBar.h"
+#include "tkbltGrPenLine.h"
+#include "tkbltGrElem.h"
+#include "tkbltGrElemBar.h"
+#include "tkbltGrElemLine.h"
+#include "tkbltGrMarker.h"
+#include "tkbltGrLegd.h"
+#include "tkbltGrHairs.h"
+#include "tkbltGrDef.h"
+#include "tkbltGrPostscript.h"
+#include "tkbltGrPSOutput.h"
+
+using namespace Blt;
+
+#define MARKER_ABOVE 0
+#define MARKER_UNDER 1
+
+// OptionSpecs
+
+Graph::Graph(ClientData clientData, Tcl_Interp* interp,
+ int objc, Tcl_Obj* const objv[])
+{
+ valid_ =1;
+ interp_ = interp;
+ tkwin_ = Tk_CreateWindowFromPath(interp_, Tk_MainWindow(interp_),
+ Tcl_GetString(objv[1]), NULL);
+ if (!tkwin_) {
+ valid_ =0;
+ return;
+ }
+ display_ = Tk_Display(tkwin_);
+ ((TkWindow*)tkwin_)->instanceData = this;
+
+ cmdToken_ = Tcl_CreateObjCommand(interp_, Tk_PathName(tkwin_),
+ GraphInstCmdProc, this,
+ GraphInstCmdDeleteProc);
+
+ flags = RESET;
+ nextMarkerId_ = 1;
+
+ inset_ =0;
+ titleX_ =0;
+ titleY_ =0;
+ titleWidth_ =0;
+ titleHeight_ =0;
+ width_ =0;
+ height_ =0;
+ left_ =0;
+ right_ =0;
+ top_ =0;
+ bottom_ =0;
+ focusPtr_ =NULL;
+ halo_ =0;
+ drawGC_ =NULL;
+ vRange_ =0;
+ hRange_ =0;
+ vOffset_ =0;
+ hOffset_ =0;
+ vScale_ =0;
+ hScale_ =0;
+ cache_ =None;
+ cacheWidth_ =0;
+ cacheHeight_ =0;
+
+ Tcl_InitHashTable(&axes_.table, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&axes_.tagTable, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&elements_.table, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&elements_.tagTable, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&markers_.table, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&markers_.tagTable, TCL_STRING_KEYS);
+ Tcl_InitHashTable(&penTable_, TCL_STRING_KEYS);
+
+ axes_.displayList = new Chain();
+ elements_.displayList = new Chain();
+ markers_.displayList = new Chain();
+ bindTable_ = new BindTable(this, this);
+
+ // Keep a hold of the associated tkwin until we destroy the graph,
+ // otherwise Tk might free it while we still need it.
+ Tcl_Preserve(tkwin_);
+
+ Tk_CreateEventHandler(tkwin_,
+ ExposureMask|StructureNotifyMask|FocusChangeMask,
+ GraphEventProc, this);
+}
+
+Graph::~Graph()
+{
+ // GraphOptions* ops = (GraphOptions*)ops_;
+
+ destroyMarkers();
+ destroyElements(); // must come before legend and others
+
+ delete crosshairs_;
+ delete legend_;
+ delete postscript_;
+
+ destroyAxes();
+ destroyPens();
+
+ if (bindTable_)
+ delete bindTable_;
+
+ if (drawGC_)
+ Tk_FreeGC(display_, drawGC_);
+
+ if (cache_ != None)
+ Tk_FreePixmap(display_, cache_);
+
+ Tk_FreeConfigOptions((char*)ops_, optionTable_, tkwin_);
+ Tcl_Release(tkwin_);
+ tkwin_ = NULL;
+
+ free (ops_);
+}
+
+int Graph::configure()
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ inset_ = ops->borderWidth + ops->highlightWidth;
+ if ((ops->reqHeight != Tk_ReqHeight(tkwin_)) ||
+ (ops->reqWidth != Tk_ReqWidth(tkwin_)))
+ Tk_GeometryRequest(tkwin_, ops->reqWidth, ops->reqHeight);
+
+ Tk_SetInternalBorder(tkwin_, ops->borderWidth);
+ XColor* colorPtr = Tk_3DBorderColor(ops->normalBg);
+
+ titleWidth_ =0;
+ titleHeight_ =0;
+ if (ops->title != NULL) {
+ int w, h;
+ TextStyle ts(this, &ops->titleTextStyle);
+ ts.getExtents(ops->title, &w, &h);
+ titleHeight_ = h;
+ }
+
+ // Create GCs for interior and exterior regions, and a background GC for
+ // clearing the margins with XFillRectangle
+ // Margin
+ XGCValues gcValues;
+ gcValues.foreground = ops->titleTextStyle.color->pixel;
+ gcValues.background = colorPtr->pixel;
+ unsigned long gcMask = (GCForeground | GCBackground);
+ GC newGC = Tk_GetGC(tkwin_, gcMask, &gcValues);
+ if (drawGC_ != NULL)
+ Tk_FreeGC(display_, drawGC_);
+ drawGC_ = newGC;
+
+ // If the -inverted option changed, we need to readjust the pointers
+ // to the axes and recompute the their scales.
+ adjustAxes();
+
+ // Free the pixmap if we're not buffering the display of elements anymore.
+ if (cache_ != None) {
+ Tk_FreePixmap(display_, cache_);
+ cache_ = None;
+ }
+
+ return TCL_OK;
+}
+
+void Graph::map()
+{
+ if (flags & RESET) {
+ resetAxes();
+ flags &= ~RESET;
+ flags |= LAYOUT;
+ }
+
+ if (flags & LAYOUT) {
+ layoutGraph();
+ crosshairs_->map();
+ mapAxes();
+ mapElements();
+ flags &= ~LAYOUT;
+ flags |= MAP_MARKERS | CACHE;
+ }
+
+ mapMarkers();
+}
+
+void Graph::draw()
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ flags &= ~REDRAW_PENDING;
+ if ((flags & GRAPH_DELETED) || !Tk_IsMapped(tkwin_))
+ return;
+
+ // Don't bother computing the layout until the size of the window is
+ // something reasonable.
+ if ((Tk_Width(tkwin_) <= 1) || (Tk_Height(tkwin_) <= 1))
+ return;
+
+ width_ = Tk_Width(tkwin_);
+ height_ = Tk_Height(tkwin_);
+
+ map();
+
+ // Create a pixmap the size of the window for double buffering
+ Pixmap drawable = Tk_GetPixmap(display_, Tk_WindowId(tkwin_),
+ width_, height_, Tk_Depth(tkwin_));
+
+ if (cache_ == None || cacheWidth_ != width_ || cacheHeight_ != height_) {
+ if (cache_ != None)
+ Tk_FreePixmap(display_, cache_);
+ cache_ = Tk_GetPixmap(display_, Tk_WindowId(tkwin_), width_, height_,
+ Tk_Depth(tkwin_));
+ cacheWidth_ = width_;
+ cacheHeight_ = height_;
+ flags |= CACHE;
+ }
+
+ // Update cache if needed
+ if (flags & CACHE) {
+ drawMargins(cache_);
+
+ switch (legend_->position()) {
+ case Legend::TOP:
+ case Legend::BOTTOM:
+ case Legend::RIGHT:
+ case Legend::LEFT:
+ legend_->draw(cache_);
+ break;
+ default:
+ break;
+ }
+
+ // Draw the background of the plotting area with 3D border
+ Tk_Fill3DRectangle(tkwin_, cache_, ops->plotBg,
+ left_-ops->plotBW,
+ top_-ops->plotBW,
+ right_-left_+1+2*ops->plotBW,
+ bottom_-top_+1+2*ops->plotBW,
+ ops->plotBW, ops->plotRelief);
+
+ drawAxesGrids(cache_);
+ drawAxes(cache_);
+ drawAxesLimits(cache_);
+
+ if (!legend_->isRaised()) {
+ switch (legend_->position()) {
+ case Legend::PLOT:
+ case Legend::XY:
+ legend_->draw(cache_);
+ break;
+ default:
+ break;
+ }
+ }
+
+ drawMarkers(cache_, MARKER_UNDER);
+ drawElements(cache_);
+ drawActiveElements(cache_);
+
+ if (legend_->isRaised()) {
+ switch (legend_->position()) {
+ case Legend::PLOT:
+ case Legend::XY:
+ legend_->draw(cache_);
+ break;
+ default:
+ break;
+ }
+ }
+
+ flags &= ~CACHE;
+ }
+
+ XCopyArea(display_, cache_, drawable, drawGC_, 0, 0, Tk_Width(tkwin_),
+ Tk_Height(tkwin_), 0, 0);
+
+ drawMarkers(drawable, MARKER_ABOVE);
+
+ // Draw 3D border just inside of the focus highlight ring
+ if ((ops->borderWidth > 0) && (ops->relief != TK_RELIEF_FLAT))
+ Tk_Draw3DRectangle(tkwin_, drawable, ops->normalBg,
+ ops->highlightWidth, ops->highlightWidth,
+ width_ - 2*ops->highlightWidth,
+ height_ - 2*ops->highlightWidth,
+ ops->borderWidth, ops->relief);
+
+ // Draw focus highlight ring
+ if ((ops->highlightWidth > 0) && (flags & FOCUS)) {
+ GC gc = Tk_GCForColor(ops->highlightColor, drawable);
+ Tk_DrawFocusHighlight(tkwin_, gc, ops->highlightWidth, drawable);
+ }
+
+ // crosshairs
+ crosshairs_->draw(drawable);
+
+ XCopyArea(display_, drawable, Tk_WindowId(tkwin_), drawGC_,
+ 0, 0, width_, height_, 0, 0);
+
+ Tk_FreePixmap(display_, drawable);
+}
+
+int Graph::print(const char* ident, PSOutput* psPtr)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+ PostscriptOptions* pops = (PostscriptOptions*)postscript_->ops_;
+
+ // be sure the window is realized so that relief colors are available
+ if (flags & REDRAW_PENDING) {
+ flags |= REDRAW_PENDING;
+ DisplayGraph(this);
+ }
+
+ // We need to know how big a graph to print. If the graph hasn't been drawn
+ // yet, the width and height will be 1. Instead use the requested size of
+ // the widget. The user can still override this with the -width and -height
+ // postscript options.
+ if (pops->reqWidth > 0)
+ width_ = pops->reqWidth;
+ else if (width_ < 2)
+ width_ = Tk_ReqWidth(tkwin_);
+
+ if (pops->reqHeight > 0)
+ height_ = pops->reqHeight;
+ else if (height_ < 2)
+ height_ = Tk_ReqHeight(tkwin_);
+
+ psPtr->computeBBox(width_, height_);
+ flags |= RESET;
+
+ // Turn on PostScript measurements when computing the graph's layout.
+ reconfigure();
+
+ map();
+
+ int x = left_ - ops->plotBW;
+ int y = top_ - ops->plotBW;
+
+ int w = (right_ - left_ + 1) + (2*ops->plotBW);
+ int h = (bottom_ - top_ + 1) + (2*ops->plotBW);
+
+ int result = psPtr->preamble(ident);
+ if (result != TCL_OK)
+ goto error;
+
+ psPtr->setFont(ops->titleTextStyle.font);
+ if (pops->decorations)
+ psPtr->setBackground(Tk_3DBorderColor(ops->plotBg));
+ else
+ psPtr->setClearBackground();
+
+ psPtr->fillRectangle(x, y, w, h);
+ psPtr->append("gsave\n\n");
+
+ // Start
+ printMargins(psPtr);
+
+ switch (legend_->position()) {
+ case Legend::TOP:
+ case Legend::BOTTOM:
+ case Legend::RIGHT:
+ case Legend::LEFT:
+ legend_->print(psPtr);
+ break;
+ default:
+ break;
+ }
+
+ printAxesGrids(psPtr);
+ printAxes(psPtr);
+ printAxesLimits(psPtr);
+
+ if (!legend_->isRaised()) {
+ switch (legend_->position()) {
+ case Legend::PLOT:
+ case Legend::XY:
+ legend_->print(psPtr);
+ break;
+ default:
+ break;
+ }
+ }
+
+ printMarkers(psPtr, MARKER_UNDER);
+ printElements(psPtr);
+ printActiveElements(psPtr);
+
+ if (legend_->isRaised()) {
+ switch (legend_->position()) {
+ case Legend::PLOT:
+ case Legend::XY:
+ legend_->print(psPtr);
+ break;
+ default:
+ break;
+ }
+ }
+ printMarkers(psPtr, MARKER_ABOVE);
+
+ psPtr->append("\n");
+ psPtr->append("% Unset clipping\n");
+ psPtr->append("grestore\n\n");
+ psPtr->append("showpage\n");
+ psPtr->append("%Trailer\n");
+ psPtr->append("grestore\n");
+ psPtr->append("end\n");
+ psPtr->append("%EOF\n");
+
+ error:
+ width_ = Tk_Width(tkwin_);
+ height_ = Tk_Height(tkwin_);
+ reconfigure();
+
+ // Redraw the graph in order to re-calculate the layout as soon as
+ // possible. This is in the case the crosshairs are active.
+ flags |= LAYOUT;
+ eventuallyRedraw();
+
+ return result;
+}
+
+void Graph::eventuallyRedraw()
+{
+ if (flags & GRAPH_DELETED)
+ return;
+
+ if (!(flags & REDRAW_PENDING)) {
+ flags |= REDRAW_PENDING;
+ Tcl_DoWhenIdle(DisplayGraph, this);
+ }
+}
+
+void Graph::extents(Region2d* regionPtr)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ regionPtr->left = (double)(hOffset_ - ops->xPad);
+ regionPtr->top = (double)(vOffset_ - ops->yPad);
+ regionPtr->right = (double)(hOffset_ + hRange_ + ops->xPad);
+ regionPtr->bottom = (double)(vOffset_ + vRange_ + ops->yPad);
+}
+
+int Graph::invoke(const Ensemble* ensemble, int cmdIndex,
+ int objc, Tcl_Obj* const objv[])
+{
+ while (cmdIndex < objc) {
+ int index;
+ if (Tcl_GetIndexFromObjStruct(interp_, objv[cmdIndex], ensemble, sizeof(ensemble[0]), "command", 0, &index) != TCL_OK)
+ return TCL_ERROR;
+
+ if (ensemble[index].proc)
+ return ensemble[index].proc(this, interp_, objc, objv);
+
+ ensemble = ensemble[index].subensemble;
+ ++cmdIndex;
+ }
+
+ Tcl_WrongNumArgs(interp_, cmdIndex, objv, "option ?arg ...?");
+ return TCL_ERROR;
+}
+
+void Graph::reconfigure()
+{
+ configure();
+ legend_->configure();
+ configureElements();
+ configureAxes();
+ configureMarkers();
+}
+
+// Margins
+
+void Graph::drawMargins(Drawable drawable)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+ XRectangle rects[4];
+
+ // Draw the four outer rectangles which encompass the plotting
+ // surface. This clears the surrounding area and clips the plot.
+ rects[0].x = rects[0].y = rects[3].x = rects[1].x = 0;
+ rects[0].width = rects[3].width = (short int)width_;
+ rects[0].height = (short int)top_;
+ rects[3].y = bottom_;
+ rects[3].height = height_ - bottom_;
+ rects[2].y = rects[1].y = top_;
+ rects[1].width = left_;
+ rects[2].height = rects[1].height = bottom_ - top_;
+ rects[2].x = right_;
+ rects[2].width = width_ - right_;
+
+ Tk_Fill3DRectangle(tkwin_, drawable, ops->normalBg,
+ rects[0].x, rects[0].y, rects[0].width, rects[0].height,
+ 0, TK_RELIEF_FLAT);
+ Tk_Fill3DRectangle(tkwin_, drawable, ops->normalBg,
+ rects[1].x, rects[1].y, rects[1].width, rects[1].height,
+ 0, TK_RELIEF_FLAT);
+ Tk_Fill3DRectangle(tkwin_, drawable, ops->normalBg,
+ rects[2].x, rects[2].y, rects[2].width, rects[2].height,
+ 0, TK_RELIEF_FLAT);
+ Tk_Fill3DRectangle(tkwin_, drawable, ops->normalBg,
+ rects[3].x, rects[3].y, rects[3].width, rects[3].height,
+ 0, TK_RELIEF_FLAT);
+
+ // Draw 3D border around the plotting area
+ if (ops->plotBW > 0) {
+ int x = left_ - ops->plotBW;
+ int y = top_ - ops->plotBW;
+ int w = (right_ - left_) + (2*ops->plotBW);
+ int h = (bottom_ - top_) + (2*ops->plotBW);
+ Tk_Draw3DRectangle(tkwin_, drawable, ops->normalBg,
+ x, y, w, h, ops->plotBW, ops->plotRelief);
+ }
+
+ if (ops->title) {
+ TextStyle ts(this, &ops->titleTextStyle);
+ ts.drawText(drawable, ops->title, titleX_, titleY_);
+ }
+}
+
+void Graph::printMargins(PSOutput* psPtr)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+ PostscriptOptions* pops = (PostscriptOptions*)postscript_->ops_;
+ XRectangle margin[4];
+
+ margin[0].x = margin[0].y = margin[3].x = margin[1].x = 0;
+ margin[0].width = margin[3].width = width_;
+ margin[0].height = top_;
+ margin[3].y = bottom_;
+ margin[3].height = height_ - bottom_;
+ margin[2].y = margin[1].y = top_;
+ margin[1].width = left_;
+ margin[2].height = margin[1].height = bottom_ - top_;
+ margin[2].x = right_;
+ margin[2].width = width_ - right_;
+
+ // Clear the surrounding margins and clip the plotting surface
+ if (pops->decorations)
+ psPtr->setBackground(Tk_3DBorderColor(ops->normalBg));
+ else
+ psPtr->setClearBackground();
+
+ psPtr->append("% Margins\n");
+ psPtr->fillRectangles(margin, 4);
+
+ if (pops->decorations) {
+ psPtr->append("% Interior 3D border\n");
+ if (ops->plotBW > 0) {
+ int x = left_ - ops->plotBW;
+ int y = top_ - ops->plotBW;
+ int w = (right_ - left_) + (2*ops->plotBW);
+ int h = (bottom_ - top_) + (2*ops->plotBW);
+ psPtr->print3DRectangle(ops->normalBg, (double)x, (double)y, w, h,
+ ops->plotBW, ops->plotRelief);
+ }
+ }
+
+ if (ops->title) {
+ psPtr->append("% Graph title\n");
+ TextStyle ts(this, &ops->titleTextStyle);
+ ts.printText(psPtr, ops->title, (double)titleX_, (double)titleY_);
+ }
+}
+
+// Pens
+
+void Graph::destroyPens()
+{
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry *hPtr = Tcl_FirstHashEntry(&penTable_, &iter);
+ hPtr; hPtr = Tcl_NextHashEntry(&iter)) {
+ Pen* penPtr = (Pen*)Tcl_GetHashValue(hPtr);
+ delete penPtr;
+ }
+ Tcl_DeleteHashTable(&penTable_);
+}
+
+int Graph::getPen(Tcl_Obj* objPtr, Pen** penPtrPtr)
+{
+ *penPtrPtr = NULL;
+ const char *name = Tcl_GetString(objPtr);
+ if (!name || !name[0])
+ return TCL_ERROR;
+
+ Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&penTable_, name);
+ if (!hPtr) {
+ Tcl_AppendResult(interp_, "can't find pen \"", name, "\" in \"",
+ Tk_PathName(tkwin_), "\"", NULL);
+ return TCL_ERROR;
+ }
+
+ *penPtrPtr = (Pen*)Tcl_GetHashValue(hPtr);
+
+ return TCL_OK;
+}
+
+// Elements
+
+void Graph::destroyElements()
+{
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&elements_.table, &iter);
+ hPtr; hPtr = Tcl_NextHashEntry(&iter)) {
+ Element* elemPtr = (Element*)Tcl_GetHashValue(hPtr);
+ legend_->removeElement(elemPtr);
+ delete elemPtr;
+ }
+
+ Tcl_DeleteHashTable(&elements_.table);
+ Tcl_DeleteHashTable(&elements_.tagTable);
+ delete elements_.displayList;
+}
+
+void Graph::configureElements()
+{
+ for (ChainLink* link = Chain_FirstLink(elements_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->configure();
+ }
+}
+
+void Graph::mapElements()
+{
+ for (ChainLink* link = Chain_FirstLink(elements_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->map();
+ }
+}
+
+void Graph::drawElements(Drawable drawable)
+{
+ // Draw with respect to the stacking order
+ for (ChainLink* link=Chain_LastLink(elements_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->draw(drawable);
+ }
+}
+
+void Graph::drawActiveElements(Drawable drawable)
+{
+ for (ChainLink* link = Chain_LastLink(elements_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->drawActive(drawable);
+ }
+}
+
+void Graph::printElements(PSOutput* psPtr)
+{
+ for (ChainLink* link = Chain_LastLink(elements_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->print(psPtr);
+ }
+}
+
+void Graph::printActiveElements(PSOutput* psPtr)
+{
+ for (ChainLink* link = Chain_LastLink(elements_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ elemPtr->printActive(psPtr);
+ }
+}
+
+int Graph::getElement(Tcl_Obj *objPtr, Element **elemPtrPtr)
+{
+ *elemPtrPtr =NULL;
+ const char* name = Tcl_GetString(objPtr);
+ if (!name || !name[0])
+ return TCL_ERROR;
+
+ Tcl_HashEntry*hPtr = Tcl_FindHashEntry(&elements_.table, name);
+ if (!hPtr) {
+ Tcl_AppendResult(interp_, "can't find element \"", name, "\" in \"",
+ Tk_PathName(tkwin_), "\"", NULL);
+ return TCL_ERROR;
+ }
+
+ *elemPtrPtr = (Element*)Tcl_GetHashValue(hPtr);
+ return TCL_OK;
+}
+
+ClientData Graph::elementTag(const char *tagName)
+{
+ int isNew;
+ Tcl_HashEntry* hPtr =
+ Tcl_CreateHashEntry(&elements_.tagTable, tagName, &isNew);
+ return Tcl_GetHashKey(&elements_.tagTable, hPtr);
+}
+
+// Markers
+
+void Graph::destroyMarkers()
+{
+ Tcl_HashSearch iter;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&markers_.table, &iter);
+ hPtr; hPtr=Tcl_NextHashEntry(&iter)) {
+ Marker* markerPtr = (Marker*)Tcl_GetHashValue(hPtr);
+ delete markerPtr;
+ }
+ Tcl_DeleteHashTable(&markers_.table);
+ Tcl_DeleteHashTable(&markers_.tagTable);
+ delete markers_.displayList;
+}
+
+
+void Graph::configureMarkers()
+{
+ for (ChainLink* link = Chain_FirstLink(markers_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Marker* markerPtr = (Marker*)Chain_GetValue(link);
+ markerPtr->configure();
+ }
+}
+
+void Graph::mapMarkers()
+{
+ for (ChainLink* link = Chain_FirstLink(markers_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Marker* markerPtr = (Marker*)Chain_GetValue(link);
+ MarkerOptions* mops = (MarkerOptions*)markerPtr->ops();
+
+ if (mops->hide)
+ continue;
+
+ if ((flags & MAP_MARKERS) || (markerPtr->flags & MAP_ITEM)) {
+ markerPtr->map();
+ markerPtr->flags &= ~MAP_ITEM;
+ }
+ }
+
+ flags &= ~MAP_MARKERS;
+}
+
+void Graph::drawMarkers(Drawable drawable, int under)
+{
+ for (ChainLink* link = Chain_LastLink(markers_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Marker* markerPtr = (Marker*)Chain_GetValue(link);
+ MarkerOptions* mops = (MarkerOptions*)markerPtr->ops();
+
+ if ((mops->drawUnder != under) || markerPtr->clipped_ || mops->hide)
+ continue;
+
+ if (isElementHidden(markerPtr))
+ continue;
+
+ markerPtr->draw(drawable);
+ }
+}
+
+void Graph::printMarkers(PSOutput* psPtr, int under)
+{
+ for (ChainLink* link = Chain_LastLink(markers_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Marker* markerPtr = (Marker*)Chain_GetValue(link);
+ MarkerOptions* mops = (MarkerOptions*)markerPtr->ops();
+ if (mops->drawUnder != under)
+ continue;
+
+ if (mops->hide)
+ continue;
+
+ if (isElementHidden(markerPtr))
+ continue;
+
+ psPtr->format("%% Marker \"%s\" is a %s.\n",
+ markerPtr->name_, markerPtr->className());
+ markerPtr->print(psPtr);
+ }
+}
+
+ClientData Graph::markerTag(const char* tagName)
+{
+ int isNew;
+ Tcl_HashEntry* hPtr = Tcl_CreateHashEntry(&markers_.tagTable, tagName,&isNew);
+ return Tcl_GetHashKey(&markers_.tagTable, hPtr);
+}
+
+Marker* Graph::nearestMarker(int x, int y, int under)
+{
+ Point2d point;
+ point.x = (double)x;
+ point.y = (double)y;
+ for (ChainLink* link = Chain_FirstLink(markers_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Marker* markerPtr = (Marker*)Chain_GetValue(link);
+ MarkerOptions* mops = (MarkerOptions*)markerPtr->ops();
+
+ if ((markerPtr->flags & MAP_ITEM) || mops->hide)
+ continue;
+
+ if (isElementHidden(markerPtr))
+ continue;
+
+ if (mops->drawUnder == under)
+ if (markerPtr->pointIn(&point))
+ return markerPtr;
+ }
+ return NULL;
+}
+
+int Graph::isElementHidden(Marker* markerPtr)
+{
+ MarkerOptions* mops = (MarkerOptions*)markerPtr->ops();
+
+ if (mops->elemName) {
+ Tcl_HashEntry *hPtr = Tcl_FindHashEntry(&elements_.table, mops->elemName);
+ if (hPtr) {
+ Element* elemPtr = (Element*)Tcl_GetHashValue(hPtr);
+ ElementOptions* eops = (ElementOptions*)elemPtr->ops();
+ if (!elemPtr->link || eops->hide)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+// Axis
+
+int Graph::createAxes()
+{
+ for (int ii=0; ii<4; ii++) {
+ int isNew;
+ Tcl_HashEntry* hPtr =
+ Tcl_CreateHashEntry(&axes_.table, axisNames[ii].name, &isNew);
+ Chain* chain = new Chain();
+
+ Axis* axisPtr = new Axis(this, axisNames[ii].name, ii, hPtr);
+ if (!axisPtr)
+ return TCL_ERROR;
+ AxisOptions* ops = (AxisOptions*)axisPtr->ops();
+
+ Tcl_SetHashValue(hPtr, axisPtr);
+
+ axisPtr->refCount_ = 1;
+ axisPtr->use_ =1;
+
+ axisPtr->setClass(!(ii&1) ? CID_AXIS_X : CID_AXIS_Y);
+
+ if (Tk_InitOptions(interp_, (char*)axisPtr->ops(),
+ axisPtr->optionTable(), tkwin_) != TCL_OK)
+ return TCL_ERROR;
+
+ if (axisPtr->configure() != TCL_OK)
+ return TCL_ERROR;
+
+ if ((axisPtr->margin_ == MARGIN_RIGHT) || (axisPtr->margin_ == MARGIN_TOP))
+ ops->hide = 1;
+
+ axisChain_[ii] = chain;
+ axisPtr->link = chain->append(axisPtr);
+ axisPtr->chain = chain;
+ }
+ return TCL_OK;
+}
+
+int Graph::createAxis(int objc, Tcl_Obj* const objv[])
+{
+ char *string = Tcl_GetString(objv[3]);
+ if (string[0] == '-') {
+ Tcl_AppendResult(interp_, "name of axis \"", string,
+ "\" can't start with a '-'", NULL);
+ return TCL_ERROR;
+ }
+
+ int isNew;
+ Tcl_HashEntry* hPtr = Tcl_CreateHashEntry(&axes_.table, string, &isNew);
+ if (!isNew) {
+ Tcl_AppendResult(interp_, "axis \"", string, "\" already exists in \"",
+ Tcl_GetString(objv[0]), "\"", NULL);
+ return TCL_ERROR;
+ }
+
+ Axis* axisPtr = new Axis(this, Tcl_GetString(objv[3]), MARGIN_NONE, hPtr);
+ if (!axisPtr)
+ return TCL_ERROR;
+
+ Tcl_SetHashValue(hPtr, axisPtr);
+
+ if ((Tk_InitOptions(interp_, (char*)axisPtr->ops(), axisPtr->optionTable(), tkwin_) != TCL_OK) || (AxisObjConfigure(axisPtr, interp_, objc-4, objv+4) != TCL_OK)) {
+ delete axisPtr;
+ return TCL_ERROR;
+ }
+
+ return TCL_OK;
+}
+
+void Graph::destroyAxes()
+{
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry *hPtr=Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr=Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ delete axisPtr;
+ }
+ Tcl_DeleteHashTable(&axes_.table);
+
+ for (int ii=0; ii<4; ii++)
+ delete axisChain_[ii];
+
+ Tcl_DeleteHashTable(&axes_.tagTable);
+ delete axes_.displayList;
+}
+
+void Graph::configureAxes()
+{
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry *hPtr=Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ axisPtr->configure();
+ }
+}
+
+void Graph::mapAxes()
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ for (int ii=0; ii<4; ii++) {
+ int count =0;
+ int offset =0;
+
+ Chain* chain = ops->margins[ii].axes;
+ for (ChainLink* link=Chain_FirstLink(chain); link;
+ link = Chain_NextLink(link)) {
+ Axis *axisPtr = (Axis*)Chain_GetValue(link);
+ AxisOptions* aops = (AxisOptions*)axisPtr->ops();
+ if (!axisPtr->use_)
+ continue;
+
+ if (aops->reqNumMajorTicks <= 0)
+ aops->reqNumMajorTicks = 4;
+
+ if (ops->stackAxes)
+ axisPtr->mapStacked(count, ii);
+ else
+ axisPtr->map(offset, ii);
+
+ if (aops->showGrid)
+ axisPtr->mapGridlines();
+
+ offset += axisPtr->isHorizontal() ? axisPtr->height_ : axisPtr->width_;
+ count++;
+ }
+ }
+}
+
+void Graph::drawAxes(Drawable drawable)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ for (int ii=0; ii<4; ii++) {
+ for (ChainLink* link = Chain_LastLink(ops->margins[ii].axes); link;
+ link = Chain_PrevLink(link)) {
+ Axis *axisPtr = (Axis*)Chain_GetValue(link);
+ axisPtr->draw(drawable);
+ }
+ }
+}
+
+void Graph::drawAxesLimits(Drawable drawable)
+{
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ axisPtr->drawLimits(drawable);
+ }
+}
+
+void Graph::drawAxesGrids(Drawable drawable)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ for (int ii=0; ii<4; ii++) {
+ for (ChainLink* link = Chain_FirstLink(ops->margins[ii].axes); link;
+ link = Chain_NextLink(link)) {
+ Axis *axisPtr = (Axis*)Chain_GetValue(link);
+ axisPtr->drawGrids(drawable);
+ }
+ }
+}
+
+void Graph::printAxes(PSOutput* psPtr)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ for (Margin *mp = ops->margins, *mend = mp + 4; mp < mend; mp++) {
+ for (ChainLink* link = Chain_FirstLink(mp->axes); link;
+ link = Chain_NextLink(link)) {
+ Axis *axisPtr = (Axis*)Chain_GetValue(link);
+ axisPtr->print(psPtr);
+ }
+ }
+}
+
+void Graph::printAxesGrids(PSOutput* psPtr)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ for (int ii=0; ii<4; ii++) {
+ for (ChainLink* link = Chain_FirstLink(ops->margins[ii].axes); link;
+ link = Chain_NextLink(link)) {
+ Axis *axisPtr = (Axis*)Chain_GetValue(link);
+ axisPtr->printGrids(psPtr);
+ }
+ }
+}
+
+void Graph::printAxesLimits(PSOutput* psPtr)
+{
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ axisPtr->printLimits(psPtr);
+ }
+}
+
+int Graph::getAxis(Tcl_Obj *objPtr, Axis **axisPtrPtr)
+{
+ *axisPtrPtr = NULL;
+ const char* name = Tcl_GetString(objPtr);
+ if (!name || !name[0])
+ return TCL_ERROR;
+
+ Tcl_HashEntry* hPtr = Tcl_FindHashEntry(&axes_.table, name);
+ if (!hPtr) {
+ Tcl_AppendResult(interp_, "can't find axis \"", name, "\" in \"",
+ Tk_PathName(tkwin_), "\"", NULL);
+ return TCL_ERROR;
+ }
+
+ *axisPtrPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ return TCL_OK;
+}
+
+ClientData Graph::axisTag(const char *tagName)
+{
+ int isNew;
+ Tcl_HashEntry *hPtr = Tcl_CreateHashEntry(&axes_.tagTable, tagName, &isNew);
+ return Tcl_GetHashKey(&axes_.tagTable, hPtr);
+}
+
+void Graph::adjustAxes()
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ if (ops->inverted) {
+ ops->leftMargin.axes = axisChain_[0];
+ ops->bottomMargin.axes = axisChain_[1];
+ ops->rightMargin.axes = axisChain_[2];
+ ops->topMargin.axes = axisChain_[3];
+ }
+ else {
+ ops->leftMargin.axes = axisChain_[1];
+ ops->bottomMargin.axes = axisChain_[0];
+ ops->rightMargin.axes = axisChain_[3];
+ ops->topMargin.axes = axisChain_[2];
+ }
+}
+
+Point2d Graph::map2D(double x, double y, Axis* xAxis, Axis* yAxis)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ Point2d point;
+ if (ops->inverted) {
+ point.x = yAxis->hMap(y);
+ point.y = xAxis->vMap(x);
+ }
+ else {
+ point.x = xAxis->hMap(x);
+ point.y = yAxis->vMap(y);
+ }
+ return point;
+}
+
+Point2d Graph::invMap2D(double x, double y, Axis* xAxis, Axis* yAxis)
+{
+ GraphOptions* ops = (GraphOptions*)ops_;
+
+ Point2d point;
+ if (ops->inverted) {
+ point.x = xAxis->invVMap(y);
+ point.y = yAxis->invHMap(x);
+ }
+ else {
+ point.x = xAxis->invHMap(x);
+ point.y = yAxis->invVMap(y);
+ }
+ return point;
+}
+
+void Graph::resetAxes()
+{
+ // Step 1: Reset all axes. Initialize the data limits of the axis to
+ // impossible values.
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry* hPtr = Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ axisPtr->min_ = axisPtr->valueRange_.min = DBL_MAX;
+ axisPtr->max_ = axisPtr->valueRange_.max = -DBL_MAX;
+ }
+
+ // Step 2: For each element that's to be displayed, get the smallest
+ // and largest data values mapped to each X and Y-axis. This
+ // will be the axis limits if the user doesn't override them
+ // with -min and -max options.
+ for (ChainLink* link = Chain_FirstLink(elements_.displayList); link;
+ link = Chain_NextLink(link)) {
+ Region2d exts;
+
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ ElementOptions* elemops = (ElementOptions*)elemPtr->ops();
+ elemPtr->extents(&exts);
+ elemops->xAxis->getDataLimits(exts.left, exts.right);
+ elemops->yAxis->getDataLimits(exts.top, exts.bottom);
+ }
+
+ // Step 3: Now that we know the range of data values for each axis,
+ // set axis limits and compute a sweep to generate tick values.
+ for (Tcl_HashEntry* hPtr = Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ AxisOptions* ops = (AxisOptions*)axisPtr->ops();
+ axisPtr->fixRange();
+
+ double min = axisPtr->min_;
+ double max = axisPtr->max_;
+ if ((!isnan(axisPtr->scrollMin_)) && (min < axisPtr->scrollMin_))
+ min = axisPtr->scrollMin_;
+
+ if ((!isnan(axisPtr->scrollMax_)) && (max > axisPtr->scrollMax_))
+ max = axisPtr->scrollMax_;
+
+ if (ops->logScale)
+ axisPtr->logScale(min, max);
+ else
+ axisPtr->linearScale(min, max);
+ }
+}
+
+Axis* Graph::nearestAxis(int x, int y)
+{
+ Tcl_HashSearch cursor;
+ for (Tcl_HashEntry* hPtr=Tcl_FirstHashEntry(&axes_.table, &cursor);
+ hPtr; hPtr = Tcl_NextHashEntry(&cursor)) {
+ Axis *axisPtr = (Axis*)Tcl_GetHashValue(hPtr);
+ AxisOptions* ops = (AxisOptions*)axisPtr->ops();
+ if (ops->hide || !axisPtr->use_)
+ continue;
+
+ if (ops->showTicks) {
+ for (ChainLink* link = Chain_FirstLink(axisPtr->tickLabels_); link;
+ link = Chain_NextLink(link)) {
+ TickLabel *labelPtr = (TickLabel*)Chain_GetValue(link);
+ double rw, rh;
+ Point2d bbox[5];
+ getBoundingBox(labelPtr->width, labelPtr->height, ops->tickAngle,
+ &rw, &rh, bbox);
+ Point2d t;
+ t = anchorPoint(labelPtr->anchorPos.x, labelPtr->anchorPos.y,
+ rw, rh, axisPtr->tickAnchor_);
+ t.x = x - t.x - (rw * 0.5);
+ t.y = y - t.y - (rh * 0.5);
+
+ bbox[4] = bbox[0];
+ if (pointInPolygon(&t, bbox, 5)) {
+ return axisPtr;
+ }
+ }
+ }
+
+ if (ops->title) {
+ int w, h;
+ double rw, rh;
+ Point2d bbox[5];
+ getTextExtents(ops->titleFont, ops->title, -1, &w, &h);
+ getBoundingBox(w, h, axisPtr->titleAngle_, &rw, &rh, bbox);
+ Point2d t = anchorPoint(axisPtr->titlePos_.x, axisPtr->titlePos_.y,
+ rw, rh, axisPtr->titleAnchor_);
+ // Translate the point so that the 0,0 is the upper left
+ // corner of the bounding box
+ t.x = x - t.x - (rw * 0.5);
+ t.y = y - t.y - (rh * 0.5);
+
+ bbox[4] = bbox[0];
+ if (pointInPolygon(&t, bbox, 5)) {
+ return axisPtr;
+ }
+ }
+ if (ops->lineWidth > 0) {
+ if ((x <= axisPtr->right_) && (x >= axisPtr->left_) &&
+ (y <= axisPtr->bottom_) && (y >= axisPtr->top_)) {
+ return axisPtr;
+ }
+ }
+ }
+
+ return NULL;
+}
+
+// Bind
+
+const char** Graph::getTags(ClientData object, ClassId classId, int* num)
+{
+ const char** tags =NULL;
+
+ switch (classId) {
+ case CID_ELEM_BAR:
+ case CID_ELEM_LINE:
+ {
+ Element* ptr = (Element*)object;
+ ElementOptions* ops = (ElementOptions*)ptr->ops();
+ int cnt =0;
+ for (const char** pp=ops->tags; *pp; pp++)
+ cnt++;
+ cnt +=2;
+
+ tags = new const char*[cnt];
+ tags[0] = (const char*)elementTag(ptr->name_);
+ tags[1] = (const char*)elementTag(ptr->className());
+ int ii=2;
+ for (const char** pp = ops->tags; *pp; pp++, ii++)
+ tags[ii] = (const char*)elementTag(*pp);
+
+ *num = cnt;
+ return tags;
+ }
+ break;
+ case CID_AXIS_X:
+ case CID_AXIS_Y:
+ {
+ Axis* ptr = (Axis*)object;
+ AxisOptions* ops = (AxisOptions*)ptr->ops();
+ int cnt =0;
+ for (const char** pp=ops->tags; *pp; pp++)
+ cnt++;
+ cnt +=2;
+
+ tags = new const char*[cnt];
+ tags[0] = (const char*)axisTag(ptr->name_);
+ tags[1] = (const char*)axisTag(ptr->className());
+ int ii=2;
+ for (const char** pp = ops->tags; *pp; pp++, ii++)
+ tags[ii] = (const char*)axisTag(*pp);
+
+ *num = cnt;
+ return tags;
+ }
+ break;
+ case CID_MARKER_BITMAP:
+ case CID_MARKER_LINE:
+ case CID_MARKER_POLYGON:
+ case CID_MARKER_TEXT:
+ {
+ Marker* ptr = (Marker*)object;
+ MarkerOptions* ops = (MarkerOptions*)ptr->ops();
+ int cnt =0;
+ for (const char** pp=ops->tags; *pp; pp++)
+ cnt++;
+ cnt +=2;
+
+ tags = new const char*[cnt];
+ tags[0] = (const char*)markerTag(ptr->name_);
+ tags[1] = (const char*)markerTag(ptr->className());
+ int ii=2;
+ for (const char** pp = ops->tags; *pp; pp++, ii++)
+ tags[ii] = (const char*)markerTag(*pp);
+
+ *num = cnt;
+ return tags;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return NULL;
+}
+
+ClientData Graph::pickEntry(int xx, int yy, ClassId* classIdPtr)
+{
+ if (flags & (LAYOUT | MAP_MARKERS)) {
+ *classIdPtr = CID_NONE;
+ return NULL;
+ }
+
+ // Sample coordinate is in one of the graph margins. Can only pick an axis.
+ Region2d exts;
+ extents(&exts);
+ if (xx>=exts.right || xx<exts.left || yy>=exts.bottom || yy<exts.top) {
+ Axis* axisPtr = nearestAxis(xx, yy);
+ if (axisPtr) {
+ *classIdPtr = axisPtr->classId();
+ return axisPtr;
+ }
+ }
+
+ // From top-to-bottom check:
+ // 1. markers drawn on top (-under false).
+ // 2. elements using its display list back to front.
+ // 3. markers drawn under element (-under true).
+ Marker* markerPtr = nearestMarker(xx, yy, 0);
+ if (markerPtr) {
+ *classIdPtr = markerPtr->classId();
+ return markerPtr;
+ }
+
+ GraphOptions* ops = (GraphOptions*)ops_;
+ ClosestSearch* searchPtr = &ops->search;
+ searchPtr->index = -1;
+ searchPtr->x = xx;
+ searchPtr->y = yy;
+ searchPtr->dist = (double)(searchPtr->halo + 1);
+
+ for (ChainLink* link = Chain_LastLink(elements_.displayList); link;
+ link = Chain_PrevLink(link)) {
+ Element* elemPtr = (Element*)Chain_GetValue(link);
+ ElementOptions* eops = (ElementOptions*)elemPtr->ops();
+ if (eops->hide)
+ continue;
+ elemPtr->closest();
+ }
+
+ // Found an element within the minimum halo distance.
+ if (searchPtr->dist <= (double)searchPtr->halo) {
+ *classIdPtr = searchPtr->elemPtr->classId();
+ return searchPtr->elemPtr;
+ }
+
+ markerPtr = nearestMarker(xx, yy, 1);
+ if (markerPtr) {
+ *classIdPtr = markerPtr->classId();
+ return markerPtr;
+ }
+
+ *classIdPtr = CID_NONE;
+ return NULL;
+}
+
+int Graph::getXY(const char* string, int* xPtr, int* yPtr)
+{
+ if (!string || !*string) {
+ *xPtr = -SHRT_MAX;
+ *yPtr = -SHRT_MAX;
+ return TCL_OK;
+ }
+
+ if (*string != '@') {
+ Tcl_AppendResult(interp_, "bad position \"", string,
+ "\": should be \"@x,y\"", (char *)NULL);
+ return TCL_ERROR;
+ }
+
+ char* comma = (char*)strchr(string + 1, ',');
+ if (!comma) {
+ Tcl_AppendResult(interp_, "bad position \"", string,
+ "\": should be \"@x,y\"", (char *)NULL);
+ return TCL_ERROR;
+ }
+
+ *comma = '\0';
+ int x, y;
+ int result = ((Tk_GetPixels(interp_, tkwin_, string + 1, &x) == TCL_OK) &&
+ (Tk_GetPixels(interp_, tkwin_, comma + 1, &y) == TCL_OK));
+ *comma = ',';
+ if (!result) {
+ Tcl_AppendResult(interp_, ": can't parse position \"", string, "\"",
+ (char *)NULL);
+ return TCL_ERROR;
+ }
+
+ *xPtr = x;
+ *yPtr = y;
+ return TCL_OK;
+}
+
+// Graphics
+
+void Graph::drawSegments(Drawable drawable, GC gc,
+ Segment2d* segments, int nSegments)
+{
+ for (Segment2d *sp = segments, *send = sp + nSegments; sp < send; sp++)
+ XDrawLine(display_, drawable, gc, sp->p.x, sp->p.y, sp->q.x, sp->q.y);
+}
+
+GC Graph::getPrivateGC(unsigned long gcMask, XGCValues *valuePtr)
+{
+ Pixmap pixmap = None;
+ Drawable drawable = Tk_WindowId(tkwin_);
+ Display* display = Tk_Display(tkwin_);
+ if (drawable == None)
+ drawable = RootWindow(Tk_Display(tkwin_),Tk_ScreenNumber(tkwin_));
+
+ GC gc = XCreateGC(display, drawable, gcMask, valuePtr);
+ if (pixmap != None)
+ Tk_FreePixmap(display, pixmap);
+
+ return gc;
+}
+
+void Graph::freePrivateGC(GC gc)
+{
+ Tk_FreeXId(display_, (XID)XGContextFromGC(gc));
+ XFreeGC(display_, gc);
+}
+
+void Graph::setDashes(GC gc, Dashes* dashesPtr)
+{
+ XSetDashes(display_, gc, dashesPtr->offset, (const char*)dashesPtr->values,
+ (int)strlen((char*)dashesPtr->values));
+}
generated by cgit v0.12 at 2024-11-17 02:16:55 (GMT)