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Diffstat (limited to 'tkblt/src/tkbltGrAxis.C')
| -rw-r--r-- | tkblt/src/tkbltGrAxis.C | 1971 |
1 files changed, 0 insertions, 1971 deletions
diff --git a/tkblt/src/tkbltGrAxis.C b/tkblt/src/tkbltGrAxis.C deleted file mode 100644 index 2d8dbfb..0000000 --- a/tkblt/src/tkbltGrAxis.C +++ /dev/null @@ -1,1971 +0,0 @@ -/* - * 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 1993-2004 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 <stdlib.h> -#include <string.h> - -#include <cmath> - -#include "tkbltGraph.h" -#include "tkbltGrBind.h" -#include "tkbltGrAxis.h" -#include "tkbltGrAxisOption.h" -#include "tkbltGrPostscript.h" -#include "tkbltGrMisc.h" -#include "tkbltGrDef.h" -#include "tkbltConfig.h" -#include "tkbltGrPSOutput.h" - -using namespace Blt; - -#define AXIS_PAD_TITLE 2 -#define EXP10(x) (pow(10.0,(x))) - -AxisName Blt::axisNames[] = { - { "x", CID_AXIS_X }, - { "y", CID_AXIS_Y }, - { "x2", CID_AXIS_X }, - { "y2", CID_AXIS_Y } -} ; - -// Defs - -extern double AdjustViewport(double offset, double windowSize); - -static Tk_OptionSpec optionSpecs[] = { - {TK_OPTION_COLOR, "-activeforeground", "activeForeground", "ActiveForeground", - STD_ACTIVE_FOREGROUND, -1, Tk_Offset(AxisOptions, activeFgColor), - 0, NULL, CACHE}, - {TK_OPTION_RELIEF, "-activerelief", "activeRelief", "Relief", - "flat", -1, Tk_Offset(AxisOptions, activeRelief), 0, NULL, CACHE}, - {TK_OPTION_DOUBLE, "-autorange", "autoRange", "AutoRange", - "0", -1, Tk_Offset(AxisOptions, windowSize), 0, NULL, RESET}, - {TK_OPTION_BORDER, "-background", "background", "Background", - NULL, -1, Tk_Offset(AxisOptions, normalBg), TK_OPTION_NULL_OK, NULL, CACHE}, - {TK_OPTION_SYNONYM, "-bg", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-background", 0}, - {TK_OPTION_CUSTOM, "-bindtags", "bindTags", "BindTags", - "all", -1, Tk_Offset(AxisOptions, tags), - TK_OPTION_NULL_OK, &listObjOption, 0}, - {TK_OPTION_SYNONYM, "-bd", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-borderwidth", 0}, - {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", - STD_BORDERWIDTH, -1, Tk_Offset(AxisOptions, borderWidth), 0, NULL, LAYOUT}, - {TK_OPTION_BOOLEAN, "-checklimits", "checkLimits", "CheckLimits", - "no", -1, Tk_Offset(AxisOptions, checkLimits), 0, NULL, RESET}, - {TK_OPTION_COLOR, "-color", "color", "Color", - STD_NORMAL_FOREGROUND, -1, Tk_Offset(AxisOptions, tickColor), - 0, NULL, CACHE}, - {TK_OPTION_STRING, "-command", "command", "Command", - NULL, -1, Tk_Offset(AxisOptions, formatCmd), TK_OPTION_NULL_OK, NULL, 0}, - {TK_OPTION_BOOLEAN, "-descending", "descending", "Descending", - "no", -1, Tk_Offset(AxisOptions, descending), 0, NULL, RESET}, - {TK_OPTION_BOOLEAN, "-exterior", "exterior", "exterior", - "yes", -1, Tk_Offset(AxisOptions, exterior), 0, NULL, LAYOUT}, - {TK_OPTION_SYNONYM, "-fg", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-color", 0}, - {TK_OPTION_SYNONYM, "-foreground", NULL, NULL, - NULL, 0, -1, 0, (ClientData)"-color", 0}, - {TK_OPTION_BOOLEAN, "-grid", "grid", "Grid", - "yes", -1, Tk_Offset(AxisOptions, showGrid), 0, NULL, CACHE}, - {TK_OPTION_COLOR, "-gridcolor", "gridColor", "GridColor", - "gray64", -1, Tk_Offset(AxisOptions, major.color), 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-griddashes", "gridDashes", "GridDashes", - "dot", -1, Tk_Offset(AxisOptions, major.dashes), - TK_OPTION_NULL_OK, &dashesObjOption, CACHE}, - {TK_OPTION_PIXELS, "-gridlinewidth", "gridLineWidth", "GridLineWidth", - "1", -1, Tk_Offset(AxisOptions, major.lineWidth), 0, NULL, CACHE}, - {TK_OPTION_BOOLEAN, "-gridminor", "gridMinor", "GridMinor", - "yes", -1, Tk_Offset(AxisOptions, showGridMinor), 0, NULL, CACHE}, - {TK_OPTION_COLOR, "-gridminorcolor", "gridMinorColor", "GridMinorColor", - "gray64", -1, Tk_Offset(AxisOptions, minor.color), 0, NULL, CACHE}, - {TK_OPTION_CUSTOM, "-gridminordashes", "gridMinorDashes", "GridMinorDashes", - "dot", -1, Tk_Offset(AxisOptions, minor.dashes), - TK_OPTION_NULL_OK, &dashesObjOption, CACHE}, - {TK_OPTION_PIXELS, "-gridminorlinewidth", "gridMinorLineWidth", - "GridMinorLineWidth", - "1", -1, Tk_Offset(AxisOptions, minor.lineWidth), 0, NULL, CACHE}, - {TK_OPTION_BOOLEAN, "-hide", "hide", "Hide", - "no", -1, Tk_Offset(AxisOptions, hide), 0, NULL, LAYOUT}, - {TK_OPTION_JUSTIFY, "-justify", "justify", "Justify", - "c", -1, Tk_Offset(AxisOptions, titleJustify), 0, NULL, LAYOUT}, - {TK_OPTION_BOOLEAN, "-labeloffset", "labelOffset", "LabelOffset", - "no", -1, Tk_Offset(AxisOptions, labelOffset), 0, NULL, LAYOUT}, - {TK_OPTION_COLOR, "-limitscolor", "limitsColor", "LimitsColor", - STD_NORMAL_FOREGROUND, -1, Tk_Offset(AxisOptions, limitsTextStyle.color), - 0, NULL, CACHE}, - {TK_OPTION_FONT, "-limitsfont", "limitsFont", "LimitsFont", - STD_FONT_SMALL, -1, Tk_Offset(AxisOptions, limitsTextStyle.font), - 0, NULL, LAYOUT}, - {TK_OPTION_STRING, "-limitsformat", "limitsFormat", "LimitsFormat", - NULL, -1, Tk_Offset(AxisOptions, limitsFormat), - TK_OPTION_NULL_OK, NULL, LAYOUT}, - {TK_OPTION_PIXELS, "-linewidth", "lineWidth", "LineWidth", - "1", -1, Tk_Offset(AxisOptions, lineWidth), 0, NULL, LAYOUT}, - {TK_OPTION_BOOLEAN, "-logscale", "logScale", "LogScale", - "no", -1, Tk_Offset(AxisOptions, logScale), 0, NULL, RESET}, - {TK_OPTION_BOOLEAN, "-loosemin", "looseMin", "LooseMin", - "no", -1, Tk_Offset(AxisOptions, looseMin), 0, NULL, RESET}, - {TK_OPTION_BOOLEAN, "-loosemax", "looseMax", "LooseMax", - "no", -1, Tk_Offset(AxisOptions, looseMax), 0, NULL, RESET}, - {TK_OPTION_CUSTOM, "-majorticks", "majorTicks", "MajorTicks", - NULL, -1, Tk_Offset(AxisOptions, t1UPtr), - TK_OPTION_NULL_OK, &ticksObjOption, RESET}, - {TK_OPTION_CUSTOM, "-max", "max", "Max", - NULL, -1, Tk_Offset(AxisOptions, reqMax), - TK_OPTION_NULL_OK, &limitObjOption, RESET}, - {TK_OPTION_CUSTOM, "-min", "min", "Min", - NULL, -1, Tk_Offset(AxisOptions, reqMin), - TK_OPTION_NULL_OK, &limitObjOption, RESET}, - {TK_OPTION_CUSTOM, "-minorticks", "minorTicks", "MinorTicks", - NULL, -1, Tk_Offset(AxisOptions, t2UPtr), - TK_OPTION_NULL_OK, &ticksObjOption, RESET}, - {TK_OPTION_RELIEF, "-relief", "relief", "Relief", - "flat", -1, Tk_Offset(AxisOptions, relief), 0, NULL, CACHE}, - {TK_OPTION_DOUBLE, "-rotate", "rotate", "Rotate", - "0", -1, Tk_Offset(AxisOptions, tickAngle), 0, NULL, LAYOUT}, - {TK_OPTION_CUSTOM, "-scrollcommand", "scrollCommand", "ScrollCommand", - NULL, -1, Tk_Offset(AxisOptions, scrollCmdObjPtr), - TK_OPTION_NULL_OK, &objectObjOption, 0}, - {TK_OPTION_PIXELS, "-scrollincrement", "scrollIncrement", "ScrollIncrement", - "10", -1, Tk_Offset(AxisOptions, scrollUnits), 0, NULL, 0}, - {TK_OPTION_CUSTOM, "-scrollmax", "scrollMax", "ScrollMax", - NULL, -1, Tk_Offset(AxisOptions, reqScrollMax), - TK_OPTION_NULL_OK, &limitObjOption, 0}, - {TK_OPTION_CUSTOM, "-scrollmin", "scrollMin", "ScrollMin", - NULL, -1, Tk_Offset(AxisOptions, reqScrollMin), - TK_OPTION_NULL_OK, &limitObjOption, 0}, - {TK_OPTION_DOUBLE, "-shiftby", "shiftBy", "ShiftBy", - "0", -1, Tk_Offset(AxisOptions, shiftBy), 0, NULL, RESET}, - {TK_OPTION_BOOLEAN, "-showticks", "showTicks", "ShowTicks", - "yes", -1, Tk_Offset(AxisOptions, showTicks), 0, NULL, LAYOUT}, - {TK_OPTION_DOUBLE, "-stepsize", "stepSize", "StepSize", - "0", -1, Tk_Offset(AxisOptions, reqStep), 0, NULL, RESET}, - {TK_OPTION_INT, "-subdivisions", "subdivisions", "Subdivisions", - "2", -1, Tk_Offset(AxisOptions, reqNumMinorTicks), 0, NULL, RESET}, - {TK_OPTION_ANCHOR, "-tickanchor", "tickAnchor", "Anchor", - "c", -1, Tk_Offset(AxisOptions, reqTickAnchor), 0, NULL, LAYOUT}, - {TK_OPTION_FONT, "-tickfont", "tickFont", "Font", - STD_FONT_SMALL, -1, Tk_Offset(AxisOptions, tickFont), 0, NULL, LAYOUT}, - {TK_OPTION_PIXELS, "-ticklength", "tickLength", "TickLength", - "8", -1, Tk_Offset(AxisOptions, tickLength), 0, NULL, LAYOUT}, - {TK_OPTION_INT, "-tickdefault", "tickDefault", "TickDefault", - "4", -1, Tk_Offset(AxisOptions, reqNumMajorTicks), 0, NULL, RESET}, - {TK_OPTION_STRING, "-title", "title", "Title", - NULL, -1, Tk_Offset(AxisOptions, title), TK_OPTION_NULL_OK, NULL, LAYOUT}, - {TK_OPTION_BOOLEAN, "-titlealternate", "titleAlternate", "TitleAlternate", - "no", -1, Tk_Offset(AxisOptions, titleAlternate), 0, NULL, LAYOUT}, - {TK_OPTION_COLOR, "-titlecolor", "titleColor", "TitleColor", - STD_NORMAL_FOREGROUND, -1, Tk_Offset(AxisOptions, titleColor), - 0, NULL, CACHE}, - {TK_OPTION_FONT, "-titlefont", "titleFont", "TitleFont", - STD_FONT_NORMAL, -1, Tk_Offset(AxisOptions, titleFont), 0, NULL, LAYOUT}, - {TK_OPTION_END, NULL, NULL, NULL, NULL, 0, -1, 0, 0, 0} -}; - -TickLabel::TickLabel(char* str) -{ - anchorPos.x = DBL_MAX; - anchorPos.y = DBL_MAX; - width =0; - height =0; - string = dupstr(str); -} - -TickLabel::~TickLabel() -{ - if (string) - delete [] string; -} - -Ticks::Ticks(int cnt) -{ - nTicks =cnt; - values = new double[cnt]; -} - -Ticks::~Ticks() -{ - if (values) - delete [] values; -} - -Axis::Axis(Graph* graphPtr, const char* name, int margin, Tcl_HashEntry* hPtr) -{ - ops_ = (AxisOptions*)calloc(1, sizeof(AxisOptions)); - AxisOptions* ops = (AxisOptions*)ops_; - - graphPtr_ = graphPtr; - classId_ = CID_NONE; - name_ = dupstr(name); - className_ = dupstr("none"); - - hashPtr_ = hPtr; - refCount_ =0; - use_ =0; - active_ =0; - - link =NULL; - chain =NULL; - - titlePos_.x =0; - titlePos_.y =0; - titleWidth_ =0; - titleHeight_ =0; - min_ =0; - max_ =0; - scrollMin_ =0; - scrollMax_ =0; - valueRange_.min =0; - valueRange_.max =0; - valueRange_.range =0; - valueRange_.scale =0; - axisRange_.min =0; - axisRange_.max =0; - axisRange_.range =0; - axisRange_.scale =0; - prevMin_ =0; - prevMax_ =0; - t1Ptr_ =NULL; - t2Ptr_ =NULL; - minorSweep_.initial =0; - minorSweep_.step =0; - minorSweep_.nSteps =0; - majorSweep_.initial =0; - majorSweep_.step =0; - majorSweep_.nSteps =0; - - margin_ = margin; - segments_ =NULL; - nSegments_ =0; - tickLabels_ = new Chain(); - left_ =0; - right_ =0; - top_ =0; - bottom_ =0; - width_ =0; - height_ =0; - maxTickWidth_ =0; - maxTickHeight_ =0; - tickAnchor_ = TK_ANCHOR_N; - tickGC_ =NULL; - activeTickGC_ =NULL; - titleAngle_ =0; - titleAnchor_ = TK_ANCHOR_N; - screenScale_ =0; - screenMin_ =0; - screenRange_ =0; - - ops->reqMin =NAN; - ops->reqMax =NAN; - ops->reqScrollMin =NAN; - ops->reqScrollMax =NAN; - - ops->limitsTextStyle.anchor =TK_ANCHOR_NW; - ops->limitsTextStyle.color =NULL; - ops->limitsTextStyle.font =NULL; - ops->limitsTextStyle.angle =0; - ops->limitsTextStyle.justify =TK_JUSTIFY_LEFT; - - optionTable_ = Tk_CreateOptionTable(graphPtr_->interp_, optionSpecs); -} - -Axis::~Axis() -{ - AxisOptions* ops = (AxisOptions*)ops_; - - graphPtr_->bindTable_->deleteBindings(this); - - if (link) - chain->deleteLink(link); - - if (hashPtr_) - Tcl_DeleteHashEntry(hashPtr_); - - if (name_) - delete [] name_; - if (className_) - delete [] className_; - - if (tickGC_) - Tk_FreeGC(graphPtr_->display_, tickGC_); - - if (activeTickGC_) - Tk_FreeGC(graphPtr_->display_, activeTickGC_); - - if (ops->major.segments) - delete [] ops->major.segments; - if (ops->major.gc) - graphPtr_->freePrivateGC(ops->major.gc); - - if (ops->minor.segments) - delete [] ops->minor.segments; - if (ops->minor.gc) - graphPtr_->freePrivateGC(ops->minor.gc); - - if (t1Ptr_) - delete t1Ptr_; - if (t2Ptr_) - delete t2Ptr_; - - freeTickLabels(); - - delete tickLabels_; - - if (segments_) - delete [] segments_; - - Tk_FreeConfigOptions((char*)ops_, optionTable_, graphPtr_->tkwin_); - free(ops_); -} - -int Axis::configure() -{ - AxisOptions* ops = (AxisOptions*)ops_; - - // Check the requested axis limits. Can't allow -min to be greater than - // -max. Do this regardless of -checklimits option. We want to always - // detect when the user has zoomed in beyond the precision of the data - - if (((!isnan(ops->reqMin)) && (!isnan(ops->reqMax))) && - (ops->reqMin >= ops->reqMax)) { - ostringstream str; - str << "impossible axis limits (-min " << ops->reqMin - << " >= -max " << ops->reqMax << ") for \"" - << name_ << "\"" << ends; - Tcl_AppendResult(graphPtr_->interp_, str.str().c_str(), NULL); - return TCL_ERROR; - } - - scrollMin_ = ops->reqScrollMin; - scrollMax_ = ops->reqScrollMax; - if (ops->logScale) { - if (ops->checkLimits) { - // Check that the logscale limits are positive. - if ((!isnan(ops->reqMin)) && (ops->reqMin <= 0.0)) { - ostringstream str; - str << "bad logscale -min limit \"" << ops->reqMin - << "\" for axis \"" << name_ << "\"" << ends; - Tcl_AppendResult(graphPtr_->interp_, str.str().c_str(), NULL); - return TCL_ERROR; - } - } - if ((!isnan(scrollMin_)) && (scrollMin_ <= 0.0)) - scrollMin_ = NAN; - - if ((!isnan(scrollMax_)) && (scrollMax_ <= 0.0)) - scrollMax_ = NAN; - } - - float angle = fmod(ops->tickAngle, 360.0); - if (angle < 0.0f) - angle += 360.0f; - - ops->tickAngle = angle; - resetTextStyles(); - - titleWidth_ = titleHeight_ = 0; - if (ops->title) { - int w, h; - graphPtr_->getTextExtents(ops->titleFont, ops->title, -1, &w, &h); - titleWidth_ = (unsigned short int)w; - titleHeight_ = (unsigned short int)h; - } - - return TCL_OK; -} - -void Axis::map(int offset, int margin) -{ - if (isHorizontal()) { - screenMin_ = graphPtr_->hOffset_; - width_ = graphPtr_->right_ - graphPtr_->left_; - screenRange_ = graphPtr_->hRange_; - } - else { - screenMin_ = graphPtr_->vOffset_; - height_ = graphPtr_->bottom_ - graphPtr_->top_; - screenRange_ = graphPtr_->vRange_; - } - screenScale_ = 1.0 / screenRange_; - - AxisInfo info; - offsets(margin, offset, &info); - makeSegments(&info); -} - -void Axis::mapStacked(int count, int margin) -{ - AxisOptions* ops = (AxisOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - if (Chain_GetLength(gops->margins[margin_].axes) > 1 - || ops->reqNumMajorTicks <= 0) - ops->reqNumMajorTicks = 4; - - unsigned int slice; - if (isHorizontal()) { - slice = graphPtr_->hRange_ / Chain_GetLength(gops->margins[margin].axes); - screenMin_ = graphPtr_->hOffset_; - width_ = slice; - } - else { - slice = graphPtr_->vRange_ / Chain_GetLength(gops->margins[margin].axes); - screenMin_ = graphPtr_->vOffset_; - height_ = slice; - } - - int w, h; - graphPtr_->getTextExtents(ops->tickFont, "0", 1, &w, &h); - screenMin_ += (slice * count) + 2 + h / 2; - screenRange_ = slice - 2 * 2 - h; - screenScale_ = 1.0f / screenRange_; - - AxisInfo info; - offsets(margin, 0, &info); - makeSegments(&info); -} - -void Axis::mapGridlines() -{ - AxisOptions* ops = (AxisOptions*)ops_; - - Ticks* t1Ptr = t1Ptr_; - if (!t1Ptr) - t1Ptr = generateTicks(&majorSweep_); - - Ticks* t2Ptr = t2Ptr_; - if (!t2Ptr) - t2Ptr = generateTicks(&minorSweep_); - - int needed = t1Ptr->nTicks; - if (ops->showGridMinor) - needed += (t1Ptr->nTicks * t2Ptr->nTicks); - - if (needed == 0) { - if (t1Ptr != t1Ptr_) - delete t1Ptr; - if (t2Ptr != t2Ptr_) - delete t2Ptr; - - return; - } - - needed = t1Ptr->nTicks; - if (needed != ops->major.nAllocated) { - if (ops->major.segments) { - delete [] ops->major.segments; - ops->major.segments = NULL; - } - ops->major.segments = new Segment2d[needed]; - ops->major.nAllocated = needed; - } - needed = (t1Ptr->nTicks * t2Ptr->nTicks); - if (needed != ops->minor.nAllocated) { - if (ops->minor.segments) { - delete [] ops->minor.segments; - ops->minor.segments = NULL; - } - ops->minor.segments = new Segment2d[needed]; - ops->minor.nAllocated = needed; - } - - Segment2d* s1 = ops->major.segments; - Segment2d* s2 = ops->minor.segments; - for (int ii=0; ii<t1Ptr->nTicks; ii++) { - double value = t1Ptr->values[ii]; - if (ops->showGridMinor) { - for (int jj=0; jj<t2Ptr->nTicks; jj++) { - double subValue = value + (majorSweep_.step * t2Ptr->values[jj]); - if (inRange(subValue, &axisRange_)) { - makeGridLine(subValue, s2); - s2++; - } - } - } - if (inRange(value, &axisRange_)) { - makeGridLine(value, s1); - s1++; - } - } - - if (t1Ptr != t1Ptr_) - delete t1Ptr; - if (t2Ptr != t2Ptr_) - delete t2Ptr; - - ops->major.nUsed = s1 - ops->major.segments; - ops->minor.nUsed = s2 - ops->minor.segments; -} - -void Axis::draw(Drawable drawable) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (ops->hide || !use_) - return; - - if (ops->normalBg) { - int relief = active_ ? ops->activeRelief : ops->relief; - Tk_Fill3DRectangle(graphPtr_->tkwin_, drawable, ops->normalBg, - left_, top_, right_ - left_, bottom_ - top_, - ops->borderWidth, relief); - } - - if (ops->title) { - TextStyle ts(graphPtr_); - TextStyleOptions* tops = (TextStyleOptions*)ts.ops(); - - tops->angle = titleAngle_; - tops->font = ops->titleFont; - tops->anchor = titleAnchor_; - tops->color = active_ ? ops->activeFgColor : ops->titleColor; - tops->justify = ops->titleJustify; - - ts.xPad_ = 1; - ts.yPad_ = 0; - ts.drawText(drawable, ops->title, titlePos_.x, titlePos_.y); - } - - if (ops->scrollCmdObjPtr) { - double worldMin = valueRange_.min; - double worldMax = valueRange_.max; - if (!isnan(scrollMin_)) - worldMin = scrollMin_; - if (!isnan(scrollMax_)) - worldMax = scrollMax_; - - double viewMin = min_; - double viewMax = max_; - if (viewMin < worldMin) - viewMin = worldMin; - if (viewMax > worldMax) - viewMax = worldMax; - - if (ops->logScale) { - worldMin = log10(worldMin); - worldMax = log10(worldMax); - viewMin = log10(viewMin); - viewMax = log10(viewMax); - } - - double worldWidth = worldMax - worldMin; - double viewWidth = viewMax - viewMin; - int isHoriz = isHorizontal(); - - double fract; - if (isHoriz != ops->descending) - fract = (viewMin - worldMin) / worldWidth; - else - fract = (worldMax - viewMax) / worldWidth; - - fract = AdjustViewport(fract, viewWidth / worldWidth); - - if (isHoriz != ops->descending) { - viewMin = (fract * worldWidth); - min_ = viewMin + worldMin; - max_ = min_ + viewWidth; - viewMax = viewMin + viewWidth; - if (ops->logScale) { - min_ = EXP10(min_); - max_ = EXP10(max_); - } - updateScrollbar(graphPtr_->interp_, ops->scrollCmdObjPtr, - viewMin, viewMax, worldWidth); - } - else { - viewMax = (fract * worldWidth); - max_ = worldMax - viewMax; - min_ = max_ - viewWidth; - viewMin = viewMax + viewWidth; - if (ops->logScale) { - min_ = EXP10(min_); - max_ = EXP10(max_); - } - updateScrollbar(graphPtr_->interp_, ops->scrollCmdObjPtr, - viewMax, viewMin, worldWidth); - } - } - - if (ops->showTicks) { - TextStyle ts(graphPtr_); - TextStyleOptions* tops = (TextStyleOptions*)ts.ops(); - - tops->angle = ops->tickAngle; - tops->font = ops->tickFont; - tops->anchor = tickAnchor_; - tops->color = active_ ? ops->activeFgColor : ops->tickColor; - - ts.xPad_ = 2; - ts.yPad_ = 0; - - for (ChainLink* link = Chain_FirstLink(tickLabels_); link; - link = Chain_NextLink(link)) { - TickLabel* labelPtr = (TickLabel*)Chain_GetValue(link); - ts.drawText(drawable, labelPtr->string, labelPtr->anchorPos.x, - labelPtr->anchorPos.y); - } - } - - if ((nSegments_ > 0) && (ops->lineWidth > 0)) { - GC gc = active_ ? activeTickGC_ : tickGC_; - graphPtr_->drawSegments(drawable, gc, segments_, nSegments_); - } -} - -void Axis::drawGrids(Drawable drawable) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (ops->hide || !ops->showGrid || !use_) - return; - - graphPtr_->drawSegments(drawable, ops->major.gc, - ops->major.segments, ops->major.nUsed); - - if (ops->showGridMinor) - graphPtr_->drawSegments(drawable, ops->minor.gc, - ops->minor.segments, ops->minor.nUsed); -} - -void Axis::drawLimits(Drawable drawable) -{ - AxisOptions* ops = (AxisOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - if (!ops->limitsFormat) - return; - - int vMin = graphPtr_->left_ + gops->xPad + 2; - int vMax = vMin; - int hMin = graphPtr_->bottom_ - gops->yPad - 2; - int hMax = hMin; - - const int spacing =8; - int isHoriz = isHorizontal(); - char* minPtr =NULL; - char* maxPtr =NULL; - char minString[200]; - char maxString[200]; - const char* fmt = ops->limitsFormat; - if (fmt && *fmt) { - minPtr = minString; - snprintf(minString, 200, fmt, axisRange_.min); - - maxPtr = maxString; - snprintf(maxString, 200, fmt, axisRange_.max); - } - if (ops->descending) { - char *tmp = minPtr; - minPtr = maxPtr; - maxPtr = tmp; - } - - TextStyle ts(graphPtr_, &ops->limitsTextStyle); - if (maxPtr) { - if (isHoriz) { - ops->limitsTextStyle.angle = 90.0; - ops->limitsTextStyle.anchor = TK_ANCHOR_SE; - - int ww, hh; - ts.drawText2(drawable, maxPtr, graphPtr_->right_, hMax, &ww, &hh); - hMax -= (hh + spacing); - } - else { - ops->limitsTextStyle.angle = 0.0; - ops->limitsTextStyle.anchor = TK_ANCHOR_NW; - - int ww, hh; - ts.drawText2(drawable, maxPtr, vMax, graphPtr_->top_, &ww, &hh); - vMax += (ww + spacing); - } - } - if (minPtr) { - ops->limitsTextStyle.anchor = TK_ANCHOR_SW; - - if (isHoriz) { - ops->limitsTextStyle.angle = 90.0; - - int ww, hh; - ts.drawText2(drawable, minPtr, graphPtr_->left_, hMin, &ww, &hh); - hMin -= (hh + spacing); - } - else { - ops->limitsTextStyle.angle = 0.0; - - int ww, hh; - ts.drawText2(drawable, minPtr, vMin, graphPtr_->bottom_, &ww, &hh); - vMin += (ww + spacing); - } - } -} - -void Axis::setClass(ClassId classId) -{ - if (className_) - delete [] className_; - className_ =NULL; - - classId_ = classId; - switch (classId) { - case CID_NONE: - className_ = dupstr("none"); - break; - case CID_AXIS_X: - className_ = dupstr("XAxis"); - break; - case CID_AXIS_Y: - className_ = dupstr("YAxis"); - break; - default: - break; - } -} - -void Axis::logScale(double min, double max) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - double range; - double tickMin, tickMax; - double majorStep, minorStep; - int nMajor, nMinor; - - nMajor = nMinor = 0; - majorStep = minorStep = 0.0; - tickMin = tickMax = NAN; - if (min < max) { - min = (min != 0.0) ? log10(fabs(min)) : 0.0; - max = (max != 0.0) ? log10(fabs(max)) : 1.0; - - tickMin = floor(min); - tickMax = ceil(max); - range = tickMax - tickMin; - - if (range > 10) { - // There are too many decades to display a major tick at every - // decade. Instead, treat the axis as a linear scale - range = niceNum(range, 0); - majorStep = niceNum(range / ops->reqNumMajorTicks, 1); - tickMin = floor(tickMin/majorStep)*majorStep; - tickMax = ceil(tickMax/majorStep)*majorStep; - nMajor = (int)((tickMax - tickMin) / majorStep) + 1; - minorStep = EXP10(floor(log10(majorStep))); - if (minorStep == majorStep) { - nMinor = 4; - minorStep = 0.2; - } - else - nMinor = (majorStep/minorStep) - 1; - } - else { - if (tickMin == tickMax) - tickMax++; - majorStep = 1.0; - nMajor = (int)(tickMax - tickMin + 1); /* FIXME: Check this. */ - - minorStep = 0.0; /* This is a special hack to pass - * information to the GenerateTicks - * routine. An interval of 0.0 tells 1) - * this is a minor sweep and 2) the axis - * is log scale. */ - nMinor = 10; - } - if (!ops->looseMin || (ops->looseMin && !isnan(ops->reqMin))) { - tickMin = min; - nMajor++; - } - if (!ops->looseMax || (ops->looseMax && !isnan(ops->reqMax))) { - tickMax = max; - } - } - majorSweep_.step = majorStep; - majorSweep_.initial = floor(tickMin); - majorSweep_.nSteps = nMajor; - minorSweep_.initial = minorSweep_.step = minorStep; - minorSweep_.nSteps = nMinor; - - setRange(&axisRange_, tickMin, tickMax); -} - -void Axis::linearScale(double min, double max) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - unsigned int nTicks = 0; - double step = 1.0; - double axisMin =NAN; - double axisMax =NAN; - double tickMin =NAN; - double tickMax =NAN; - - if (min < max) { - double range = max - min; - if (ops->reqStep > 0.0) { - step = ops->reqStep; - while ((2 * step) >= range) - step *= 0.5; - } - else { - range = niceNum(range, 0); - step = niceNum(range / ops->reqNumMajorTicks, 1); - } - - axisMin = tickMin = floor(min / step) * step + 0.0; - axisMax = tickMax = ceil(max / step) * step + 0.0; - - nTicks = ((tickMax-tickMin) / step) + 1; - } - majorSweep_.step = step; - majorSweep_.initial = tickMin; - majorSweep_.nSteps = nTicks; - - /* - * The limits of the axis are either the range of the data ("tight") or at - * the next outer tick interval ("loose"). The looseness or tightness has - * to do with how the axis fits the range of data values. This option is - * overridden when the user sets an axis limit (by either -min or -max - * option). The axis limit is always at the selected limit (otherwise we - * assume that user would have picked a different number). - */ - if (!ops->looseMin || (ops->looseMin && !isnan(ops->reqMin))) - axisMin = min; - - if (!ops->looseMax || (ops->looseMax && !isnan(ops->reqMax))) - axisMax = max; - - setRange(&axisRange_, axisMin, axisMax); - - if (ops->reqNumMinorTicks > 0) { - nTicks = ops->reqNumMinorTicks - 1; - step = 1.0 / (nTicks + 1); - } - else { - nTicks = 0; - step = 0.5; - } - minorSweep_.initial = minorSweep_.step = step; - minorSweep_.nSteps = nTicks; -} - -void Axis::setRange(AxisRange *rangePtr, double min, double max) -{ - rangePtr->min = min; - rangePtr->max = max; - rangePtr->range = max - min; - if (fabs(rangePtr->range) < DBL_EPSILON) { - rangePtr->range = 1.0; - } - rangePtr->scale = 1.0 / rangePtr->range; -} - -void Axis::fixRange() -{ - AxisOptions* ops = (AxisOptions*)ops_; - - // When auto-scaling, the axis limits are the bounds of the element data. - // If no data exists, set arbitrary limits (wrt to log/linear scale). - double min = valueRange_.min; - double max = valueRange_.max; - - // Check the requested axis limits. Can't allow -min to be greater - // than -max, or have undefined log scale limits. */ - if (((!isnan(ops->reqMin)) && (!isnan(ops->reqMax))) && - (ops->reqMin >= ops->reqMax)) { - ops->reqMin = ops->reqMax = NAN; - } - if (ops->logScale) { - if ((!isnan(ops->reqMin)) && (ops->reqMin <= 0.0)) - ops->reqMin = NAN; - - if ((!isnan(ops->reqMax)) && (ops->reqMax <= 0.0)) - ops->reqMax = NAN; - } - - if (min == DBL_MAX) { - if (!isnan(ops->reqMin)) - min = ops->reqMin; - else - min = (ops->logScale) ? 0.001 : 0.0; - } - if (max == -DBL_MAX) { - if (!isnan(ops->reqMax)) - max = ops->reqMax; - else - max = 1.0; - } - if (min >= max) { - - // There is no range of data (i.e. min is not less than max), so - // manufacture one. - if (min == 0.0) - min = 0.0, max = 1.0; - else - max = min + (fabs(min) * 0.1); - } - setRange(&valueRange_, min, max); - - // The axis limits are either the current data range or overridden by the - // values selected by the user with the -min or -max options. - min_ = min; - max_ = max; - if (!isnan(ops->reqMin)) - min_ = ops->reqMin; - - if (!isnan(ops->reqMax)) - max_ = ops->reqMax; - - if (max_ < min_) { - // If the limits still don't make sense, it's because one limit - // configuration option (-min or -max) was set and the other default - // (based upon the data) is too small or large. Remedy this by making - // up a new min or max from the user-defined limit. - if (isnan(ops->reqMin)) - min_ = max_ - (fabs(max_) * 0.1); - - if (isnan(ops->reqMax)) - max_ = min_ + (fabs(max_) * 0.1); - } - - // If a window size is defined, handle auto ranging by shifting the axis - // limits. - if ((ops->windowSize > 0.0) && - (isnan(ops->reqMin)) && (isnan(ops->reqMax))) { - if (ops->shiftBy < 0.0) - ops->shiftBy = 0.0; - - max = min_ + ops->windowSize; - if (max_ >= max) { - if (ops->shiftBy > 0.0) - max = ceil(max_/ops->shiftBy)*ops->shiftBy; - min_ = max - ops->windowSize; - } - max_ = max; - } - if ((max_ != prevMax_) || - (min_ != prevMin_)) { - /* and save the previous minimum and maximum values */ - prevMin_ = min_; - prevMax_ = max_; - } -} - -// Reference: Paul Heckbert, "Nice Numbers for Graph Labels", -// Graphics Gems, pp 61-63. -double Axis::niceNum(double x, int round) -{ - double expt; /* Exponent of x */ - double frac; /* Fractional part of x */ - double nice; /* Nice, rounded fraction */ - - expt = floor(log10(x)); - frac = x / EXP10(expt); /* between 1 and 10 */ - if (round) { - if (frac < 1.5) { - nice = 1.0; - } else if (frac < 3.0) { - nice = 2.0; - } else if (frac < 7.0) { - nice = 5.0; - } else { - nice = 10.0; - } - } else { - if (frac <= 1.0) { - nice = 1.0; - } else if (frac <= 2.0) { - nice = 2.0; - } else if (frac <= 5.0) { - nice = 5.0; - } else { - nice = 10.0; - } - } - return nice * EXP10(expt); -} - -int Axis::inRange(double x, AxisRange *rangePtr) -{ - if (rangePtr->range < DBL_EPSILON) - return (fabs(rangePtr->max - x) >= DBL_EPSILON); - else { - double norm; - - norm = (x - rangePtr->min) * rangePtr->scale; - return ((norm >= -DBL_EPSILON) && ((norm - 1.0) < DBL_EPSILON)); - } -} - -int Axis::isHorizontal() -{ - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - return ((classId_ == CID_AXIS_Y) == gops->inverted); -} - -void Axis::freeTickLabels() -{ - Chain* chain = tickLabels_; - for (ChainLink* link = Chain_FirstLink(chain); link; - link = Chain_NextLink(link)) { - TickLabel* labelPtr = (TickLabel*)Chain_GetValue(link); - delete labelPtr; - } - chain->reset(); -} - -TickLabel* Axis::makeLabel(double value) -{ -#define TICK_LABEL_SIZE 200 - - AxisOptions* ops = (AxisOptions*)ops_; - - char string[TICK_LABEL_SIZE + 1]; - if (ops->logScale) - snprintf(string, TICK_LABEL_SIZE, "1E%d", int(value)); - else - snprintf(string, TICK_LABEL_SIZE, "%.*G", 15, value); - - if (ops->formatCmd) { - Tcl_Interp* interp = graphPtr_->interp_; - Tk_Window tkwin = graphPtr_->tkwin_; - - // A TCL proc was designated to format tick labels. Append the path - // name of the widget and the default tick label as arguments when - // invoking it. Copy and save the new label from interp->result. - Tcl_ResetResult(interp); - if (Tcl_VarEval(interp, ops->formatCmd, " ", Tk_PathName(tkwin), - " ", string, NULL) != TCL_OK) { - Tcl_BackgroundError(interp); - } - else { - // The proc could return a string of any length, so arbitrarily - // limit it to what will fit in the return string. - strncpy(string, Tcl_GetStringResult(interp), TICK_LABEL_SIZE); - string[TICK_LABEL_SIZE] = '\0'; - - Tcl_ResetResult(interp); /* Clear the interpreter's result. */ - } - } - - TickLabel* labelPtr = new TickLabel(string); - - return labelPtr; -} - -double Axis::invHMap(double x) -{ - AxisOptions* ops = (AxisOptions*)ops_; - double value; - - x = (double)(x - screenMin_) * screenScale_; - if (ops->descending) { - x = 1.0 - x; - } - value = (x * axisRange_.range) + axisRange_.min; - if (ops->logScale) { - value = EXP10(value); - } - return value; -} - -double Axis::invVMap(double y) -{ - AxisOptions* ops = (AxisOptions*)ops_; - double value; - - y = (double)(y - screenMin_) * screenScale_; - if (ops->descending) { - y = 1.0 - y; - } - value = ((1.0 - y) * axisRange_.range) + axisRange_.min; - if (ops->logScale) { - value = EXP10(value); - } - return value; -} - -double Axis::hMap(double x) -{ - AxisOptions* ops = (AxisOptions*)ops_; - if ((ops->logScale) && (x != 0.0)) { - x = log10(fabs(x)); - } - /* Map graph coordinate to normalized coordinates [0..1] */ - x = (x - axisRange_.min) * axisRange_.scale; - if (ops->descending) { - x = 1.0 - x; - } - return (x * screenRange_ + screenMin_); -} - -double Axis::vMap(double y) -{ - AxisOptions* ops = (AxisOptions*)ops_; - if ((ops->logScale) && (y != 0.0)) { - y = log10(fabs(y)); - } - /* Map graph coordinate to normalized coordinates [0..1] */ - y = (y - axisRange_.min) * axisRange_.scale; - if (ops->descending) { - y = 1.0 - y; - } - return ((1.0 - y) * screenRange_ + screenMin_); -} - -void Axis::getDataLimits(double min, double max) -{ - if (valueRange_.min > min) - valueRange_.min = min; - - if (valueRange_.max < max) - valueRange_.max = max; -} - -void Axis::resetTextStyles() -{ - AxisOptions* ops = (AxisOptions*)ops_; - - XGCValues gcValues; - unsigned long gcMask; - gcMask = (GCForeground | GCLineWidth | GCCapStyle); - gcValues.foreground = ops->tickColor->pixel; - gcValues.font = Tk_FontId(ops->tickFont); - gcValues.line_width = ops->lineWidth; - gcValues.cap_style = CapProjecting; - - GC newGC = Tk_GetGC(graphPtr_->tkwin_, gcMask, &gcValues); - if (tickGC_) - Tk_FreeGC(graphPtr_->display_, tickGC_); - tickGC_ = newGC; - - // Assuming settings from above GC - gcValues.foreground = ops->activeFgColor->pixel; - newGC = Tk_GetGC(graphPtr_->tkwin_, gcMask, &gcValues); - if (activeTickGC_) - Tk_FreeGC(graphPtr_->display_, activeTickGC_); - activeTickGC_ = newGC; - - gcValues.background = gcValues.foreground = ops->major.color->pixel; - gcValues.line_width = ops->major.lineWidth; - gcMask = (GCForeground | GCBackground | GCLineWidth); - if (LineIsDashed(ops->major.dashes)) { - gcValues.line_style = LineOnOffDash; - gcMask |= GCLineStyle; - } - newGC = graphPtr_->getPrivateGC(gcMask, &gcValues); - if (LineIsDashed(ops->major.dashes)) - graphPtr_->setDashes(newGC, &ops->major.dashes); - - if (ops->major.gc) - graphPtr_->freePrivateGC(ops->major.gc); - - ops->major.gc = newGC; - - gcValues.background = gcValues.foreground = ops->minor.color->pixel; - gcValues.line_width = ops->minor.lineWidth; - gcMask = (GCForeground | GCBackground | GCLineWidth); - if (LineIsDashed(ops->minor.dashes)) { - gcValues.line_style = LineOnOffDash; - gcMask |= GCLineStyle; - } - newGC = graphPtr_->getPrivateGC(gcMask, &gcValues); - if (LineIsDashed(ops->minor.dashes)) - graphPtr_->setDashes(newGC, &ops->minor.dashes); - - if (ops->minor.gc) - graphPtr_->freePrivateGC(ops->minor.gc); - - ops->minor.gc = newGC; -} - -void Axis::makeLine(int line, Segment2d *sp) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - double min = axisRange_.min; - double max = axisRange_.max; - if (ops->logScale) { - min = EXP10(min); - max = EXP10(max); - } - if (isHorizontal()) { - sp->p.x = hMap(min); - sp->q.x = hMap(max); - sp->p.y = sp->q.y = line; - } - else { - sp->q.x = sp->p.x = line; - sp->p.y = vMap(min); - sp->q.y = vMap(max); - } -} - -void Axis::offsets(int margin, int offset, AxisInfo *infoPtr) -{ - AxisOptions* ops = (AxisOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - int axisLine =0; - int t1 =0; - int t2 =0; - int labelOffset =AXIS_PAD_TITLE; - int tickLabel =0; - - float titleAngle[4] = {0.0, 90.0, 0.0, 270.0}; - titleAngle_ = titleAngle[margin]; - Margin *marginPtr = gops->margins + margin; - - if (ops->lineWidth > 0) { - if (ops->showTicks) { - t1 = ops->tickLength; - t2 = (t1 * 10) / 15; - } - labelOffset = t1 + AXIS_PAD_TITLE; - if (ops->exterior) - labelOffset += ops->lineWidth; - } - - int axisPad =0; - - // Adjust offset for the interior border width and the line width */ - // fixme - int pad = 0; - // int pad = 1; - // if (graphPtr_->plotBW > 0) - // pad += graphPtr_->plotBW + 1; - - // Pre-calculate the x-coordinate positions of the axis, tick labels, and - // the individual major and minor ticks. - int inset = pad + ops->lineWidth / 2; - - switch (margin) { - case MARGIN_TOP: - { - axisLine = graphPtr_->top_; - if (ops->exterior) { - axisLine -= gops->plotBW + axisPad + ops->lineWidth / 2; - tickLabel = axisLine - 2; - if (ops->lineWidth > 0) - tickLabel -= ops->tickLength; - } - else { - if (gops->plotRelief == TK_RELIEF_SOLID) - axisLine--; - - axisLine -= axisPad + ops->lineWidth / 2; - tickLabel = graphPtr_->top_ - gops->plotBW - 2; - } - - int mark = graphPtr_->top_ - offset - pad; - tickAnchor_ = TK_ANCHOR_S; - left_ = screenMin_ - inset - 2; - right_ = screenMin_ + screenRange_ + inset - 1; - if (gops->stackAxes) - top_ = mark - marginPtr->axesOffset; - else - top_ = mark - height_; - bottom_ = mark; - - int x, y; - if (ops->titleAlternate) { - x = graphPtr_->right_ + AXIS_PAD_TITLE; - y = mark - (height_ / 2); - titleAnchor_ = TK_ANCHOR_W; - } - else { - x = (right_ + left_) / 2; - if (gops->stackAxes) - y = mark - marginPtr->axesOffset + AXIS_PAD_TITLE; - else - y = mark - height_ + AXIS_PAD_TITLE; - - titleAnchor_ = TK_ANCHOR_N; - } - titlePos_.x = x; - titlePos_.y = y; - } - break; - - case MARGIN_BOTTOM: - { - /* - * ----------- bottom + plot borderwidth - * mark -------------------------------------------- - * ===================== axisLine (linewidth) - * tick - * title - * - * ===================== axisLine (linewidth) - * ----------- bottom + plot borderwidth - * mark -------------------------------------------- - * tick - * title - */ - axisLine = graphPtr_->bottom_; - if (gops->plotRelief == TK_RELIEF_SOLID) - axisLine++; - - if (ops->exterior) { - axisLine += gops->plotBW + axisPad + ops->lineWidth / 2; - tickLabel = axisLine + 2; - if (ops->lineWidth > 0) - tickLabel += ops->tickLength; - } - else { - axisLine -= axisPad + ops->lineWidth / 2; - tickLabel = graphPtr_->bottom_ + gops->plotBW + 2; - } - - int mark = graphPtr_->bottom_ + offset; - float fangle = fmod(ops->tickAngle, 90.0); - if (fangle == 0.0) - tickAnchor_ = TK_ANCHOR_N; - else { - int quadrant = (int)(ops->tickAngle / 90.0); - if ((quadrant == 0) || (quadrant == 2)) - tickAnchor_ = TK_ANCHOR_NE; - else - tickAnchor_ = TK_ANCHOR_NW; - } - - left_ = screenMin_ - inset - 2; - right_ = screenMin_ + screenRange_ + inset - 1; - top_ = graphPtr_->bottom_ + labelOffset - t1; - if (gops->stackAxes) - bottom_ = mark + marginPtr->axesOffset - 1; - else - bottom_ = mark + height_ - 1; - - int x, y; - if (ops->titleAlternate) { - x = graphPtr_->right_ + AXIS_PAD_TITLE; - y = mark + (height_ / 2); - titleAnchor_ = TK_ANCHOR_W; - } - else { - x = (right_ + left_) / 2; - if (gops->stackAxes) - y = mark + marginPtr->axesOffset - AXIS_PAD_TITLE; - else - y = mark + height_ - AXIS_PAD_TITLE; - titleAnchor_ = TK_ANCHOR_S; - } - titlePos_.x = x; - titlePos_.y = y; - } - break; - - case MARGIN_LEFT: - { - /* - * mark - * | : - * | : - * | : - * | : - * | : - * axisLine - */ - /* - * Exterior axis - * + plotarea right - * |A|B|C|D|E|F|G|H - * |right - * A = plot pad - * B = plot border width - * C = axis pad - * D = axis line - * E = tick length - * F = tick label - * G = graph border width - * H = highlight thickness - */ - /* - * Interior axis - * + plotarea right - * |A|B|C|D|E|F|G|H - * |right - * A = plot pad - * B = tick length - * C = axis line width - * D = axis pad - * E = plot border width - * F = tick label - * G = graph border width - * H = highlight thickness - */ - axisLine = graphPtr_->left_; - if (ops->exterior) { - axisLine -= gops->plotBW + axisPad + ops->lineWidth / 2; - tickLabel = axisLine - 2; - if (ops->lineWidth > 0) - tickLabel -= ops->tickLength; - } - else { - if (gops->plotRelief == TK_RELIEF_SOLID) - axisLine--; - axisLine += axisPad + ops->lineWidth / 2; - tickLabel = graphPtr_->left_ - gops->plotBW - 2; - } - - int mark = graphPtr_->left_ - offset; - tickAnchor_ = TK_ANCHOR_E; - if (gops->stackAxes) - left_ = mark - marginPtr->axesOffset; - else - left_ = mark - width_; - right_ = mark - 3; - top_ = screenMin_ - inset - 2; - bottom_ = screenMin_ + screenRange_ + inset - 1; - - int x, y; - if (ops->titleAlternate) { - x = mark - (width_ / 2); - y = graphPtr_->top_ - AXIS_PAD_TITLE; - titleAnchor_ = TK_ANCHOR_SW; - } - else { - if (gops->stackAxes) - x = mark - marginPtr->axesOffset; - else - x = mark - width_ + AXIS_PAD_TITLE; - y = (bottom_ + top_) / 2; - titleAnchor_ = TK_ANCHOR_W; - } - titlePos_.x = x; - titlePos_.y = y; - } - break; - - case MARGIN_RIGHT: - { - axisLine = graphPtr_->right_; - if (gops->plotRelief == TK_RELIEF_SOLID) - axisLine++; - - if (ops->exterior) { - axisLine += gops->plotBW + axisPad + ops->lineWidth / 2; - tickLabel = axisLine + 2; - if (ops->lineWidth > 0) - tickLabel += ops->tickLength; - } - else { - axisLine -= axisPad + ops->lineWidth / 2; - tickLabel = graphPtr_->right_ + gops->plotBW + 2; - } - - int mark = graphPtr_->right_ + offset + pad; - tickAnchor_ = TK_ANCHOR_W; - left_ = mark; - if (gops->stackAxes) - right_ = mark + marginPtr->axesOffset - 1; - else - right_ = mark + width_ - 1; - - top_ = screenMin_ - inset - 2; - bottom_ = screenMin_ + screenRange_ + inset -1; - - int x, y; - if (ops->titleAlternate) { - x = mark + (width_ / 2); - y = graphPtr_->top_ - AXIS_PAD_TITLE; - titleAnchor_ = TK_ANCHOR_SE; - } - else { - if (gops->stackAxes) - x = mark + marginPtr->axesOffset - AXIS_PAD_TITLE; - else - x = mark + width_ - AXIS_PAD_TITLE; - - y = (bottom_ + top_) / 2; - titleAnchor_ = TK_ANCHOR_E; - } - titlePos_.x = x; - titlePos_.y = y; - } - break; - - case MARGIN_NONE: - axisLine = 0; - break; - } - - if ((margin == MARGIN_LEFT) || (margin == MARGIN_TOP)) { - t1 = -t1; - t2 = -t2; - labelOffset = -labelOffset; - } - - infoPtr->axis = axisLine; - infoPtr->t1 = axisLine + t1; - infoPtr->t2 = axisLine + t2; - if (tickLabel > 0) - infoPtr->label = tickLabel; - else - infoPtr->label = axisLine + labelOffset; - - if (!ops->exterior) { - infoPtr->t1 = axisLine - t1; - infoPtr->t2 = axisLine - t2; - } -} - -void Axis::makeTick(double value, int tick, int line, Segment2d *sp) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (ops->logScale) - value = EXP10(value); - - if (isHorizontal()) { - sp->p.x = hMap(value); - sp->p.y = line; - sp->q.x = sp->p.x; - sp->q.y = tick; - } - else { - sp->p.x = line; - sp->p.y = vMap(value); - sp->q.x = tick; - sp->q.y = sp->p.y; - } -} - -void Axis::makeSegments(AxisInfo *infoPtr) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (segments_) { - delete [] segments_; - segments_ = NULL; - } - - Ticks* t1Ptr = ops->t1UPtr ? ops->t1UPtr : t1Ptr_; - Ticks* t2Ptr = ops->t2UPtr ? ops->t2UPtr : t2Ptr_; - - int nMajorTicks= t1Ptr ? t1Ptr->nTicks : 0; - int nMinorTicks= t2Ptr ? t2Ptr->nTicks : 0; - - int arraySize = 1 + (nMajorTicks * (nMinorTicks + 1)); - Segment2d* segments = new Segment2d[arraySize]; - Segment2d* sp = segments; - if (ops->lineWidth > 0) { - makeLine(infoPtr->axis, sp); - sp++; - } - - if (ops->showTicks) { - int isHoriz = isHorizontal(); - for (int ii=0; ii<nMajorTicks; ii++) { - double t1 = t1Ptr->values[ii]; - /* Minor ticks */ - for (int jj=0; jj<nMinorTicks; jj++) { - double t2 = t1 + (majorSweep_.step*t2Ptr->values[jj]); - if (inRange(t2, &axisRange_)) { - makeTick(t2, infoPtr->t2, infoPtr->axis, sp); - sp++; - } - } - if (!inRange(t1, &axisRange_)) - continue; - - /* Major tick */ - makeTick(t1, infoPtr->t1, infoPtr->axis, sp); - sp++; - } - - ChainLink* link = Chain_FirstLink(tickLabels_); - double labelPos = (double)infoPtr->label; - - for (int ii=0; ii< nMajorTicks; ii++) { - double t1 = t1Ptr->values[ii]; - if (ops->labelOffset) - t1 += majorSweep_.step * 0.5; - - if (!inRange(t1, &axisRange_)) - continue; - - TickLabel* labelPtr = (TickLabel*)Chain_GetValue(link); - link = Chain_NextLink(link); - Segment2d seg; - makeTick(t1, infoPtr->t1, infoPtr->axis, &seg); - // Save tick label X-Y position - if (isHoriz) { - labelPtr->anchorPos.x = seg.p.x; - labelPtr->anchorPos.y = labelPos; - } - else { - labelPtr->anchorPos.x = labelPos; - labelPtr->anchorPos.y = seg.p.y; - } - } - } - segments_ = segments; - nSegments_ = sp - segments; -} - -Ticks* Axis::generateTicks(TickSweep *sweepPtr) -{ - Ticks* ticksPtr = new Ticks(sweepPtr->nSteps); - - if (sweepPtr->step == 0.0) { - // Hack: A zero step indicates to use log values - // Precomputed log10 values [1..10] - static double logTable[] = { - 0.0, - 0.301029995663981, - 0.477121254719662, - 0.602059991327962, - 0.698970004336019, - 0.778151250383644, - 0.845098040014257, - 0.903089986991944, - 0.954242509439325, - 1.0 - }; - for (int ii=0; ii<sweepPtr->nSteps; ii++) - ticksPtr->values[ii] = logTable[ii]; - } - else { - double value = sweepPtr->initial; - for (int ii=0; ii<sweepPtr->nSteps; ii++) { - value = (value/sweepPtr->step)*sweepPtr->step; - ticksPtr->values[ii] = value; - value += sweepPtr->step; - } - } - - return ticksPtr; -} - -void Axis::makeGridLine(double value, Segment2d *sp) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (ops->logScale) - value = EXP10(value); - - if (isHorizontal()) { - sp->p.x = hMap(value); - sp->p.y = graphPtr_->top_; - sp->q.x = sp->p.x; - sp->q.y = graphPtr_->bottom_; - } - else { - sp->p.x = graphPtr_->left_; - sp->p.y = vMap(value); - sp->q.x = graphPtr_->right_; - sp->q.y = sp->p.y; - } -} - -void Axis::print(PSOutput* psPtr) -{ - AxisOptions* ops = (AxisOptions*)ops_; - PostscriptOptions* pops = (PostscriptOptions*)graphPtr_->postscript_->ops_; - - if (ops->hide || !use_) - return; - - psPtr->format("%% Axis \"%s\"\n", name_); - if (pops->decorations) { - if (ops->normalBg) { - int relief = active_ ? ops->activeRelief : ops->relief; - psPtr->fill3DRectangle(ops->normalBg, left_, top_, - right_-left_, bottom_-top_, - ops->borderWidth, relief); - } - } - else { - psPtr->setClearBackground(); - psPtr->fillRectangle(left_, top_, right_-left_, bottom_-top_); - } - - if (ops->title) { - TextStyle ts(graphPtr_); - TextStyleOptions* tops = (TextStyleOptions*)ts.ops(); - - tops->angle = titleAngle_; - tops->font = ops->titleFont; - tops->anchor = titleAnchor_; - tops->color = active_ ? ops->activeFgColor : ops->titleColor; - tops->justify = ops->titleJustify; - - ts.xPad_ = 1; - ts.yPad_ = 0; - ts.printText(psPtr, ops->title, titlePos_.x, titlePos_.y); - } - - if (ops->showTicks) { - TextStyle ts(graphPtr_); - TextStyleOptions* tops = (TextStyleOptions*)ts.ops(); - - tops->angle = ops->tickAngle; - tops->font = ops->tickFont; - tops->anchor = tickAnchor_; - tops->color = active_ ? ops->activeFgColor : ops->tickColor; - - ts.xPad_ = 2; - ts.yPad_ = 0; - - for (ChainLink* link = Chain_FirstLink(tickLabels_); link; - link = Chain_NextLink(link)) { - TickLabel *labelPtr = (TickLabel*)Chain_GetValue(link); - ts.printText(psPtr, labelPtr->string, labelPtr->anchorPos.x, - labelPtr->anchorPos.y); - } - } - - if ((nSegments_ > 0) && (ops->lineWidth > 0)) { - psPtr->setLineAttributes(active_ ? ops->activeFgColor : ops->tickColor, - ops->lineWidth, (Dashes*)NULL, CapButt, JoinMiter); - psPtr->printSegments(segments_, nSegments_); - } -} - -void Axis::printGrids(PSOutput* psPtr) -{ - AxisOptions* ops = (AxisOptions*)ops_; - - if (ops->hide || !ops->showGrid || !use_) - return; - - psPtr->format("%% Axis %s: grid line attributes\n", name_); - psPtr->setLineAttributes(ops->major.color, ops->major.lineWidth, - &ops->major.dashes, CapButt, JoinMiter); - psPtr->format("%% Axis %s: major grid line segments\n", name_); - psPtr->printSegments(ops->major.segments, ops->major.nUsed); - - if (ops->showGridMinor) { - psPtr->setLineAttributes(ops->minor.color, ops->minor.lineWidth, - &ops->minor.dashes, CapButt, JoinMiter); - psPtr->format("%% Axis %s: minor grid line segments\n", name_); - psPtr->printSegments(ops->minor.segments, ops->minor.nUsed); - } -} - -void Axis::printLimits(PSOutput* psPtr) -{ - AxisOptions* ops = (AxisOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - if (!ops->limitsFormat) - return; - - double vMin = graphPtr_->left_ + gops->xPad + 2; - double vMax = vMin; - double hMin = graphPtr_->bottom_ - gops->yPad - 2; - double hMax = hMin; - - const int spacing =8; - int isHoriz = isHorizontal(); - char* minPtr =NULL; - char* maxPtr =NULL; - char minString[200]; - char maxString[200]; - const char* fmt = ops->limitsFormat; - if (fmt && *fmt) { - minPtr = minString; - snprintf(minString, 200, fmt, axisRange_.min); - - maxPtr = maxString; - snprintf(maxString, 200, fmt, axisRange_.max); - } - if (ops->descending) { - char *tmp = minPtr; - minPtr = maxPtr; - maxPtr = tmp; - } - - int textWidth, textHeight; - TextStyle ts(graphPtr_, &ops->limitsTextStyle); - if (maxPtr) { - graphPtr_->getTextExtents(ops->tickFont, maxPtr, -1, - &textWidth, &textHeight); - if ((textWidth > 0) && (textHeight > 0)) { - if (isHoriz) { - ops->limitsTextStyle.angle = 90.0; - ops->limitsTextStyle.anchor = TK_ANCHOR_SE; - - ts.printText(psPtr, maxPtr, (double)graphPtr_->right_, hMax); - hMax -= (textWidth + spacing); - } - else { - ops->limitsTextStyle.angle = 0.0; - ops->limitsTextStyle.anchor = TK_ANCHOR_NW; - - ts.printText(psPtr, maxPtr, vMax, (double)graphPtr_->top_); - vMax += (textWidth + spacing); - } - } - } - - if (minPtr) { - graphPtr_->getTextExtents(ops->tickFont, minPtr, -1, - &textWidth, &textHeight); - if ((textWidth > 0) && (textHeight > 0)) { - ops->limitsTextStyle.anchor = TK_ANCHOR_SW; - - if (isHoriz) { - ops->limitsTextStyle.angle = 90.0; - - ts.printText(psPtr, minPtr, (double)graphPtr_->left_, hMin); - hMin -= (textWidth + spacing); - } - else { - ops->limitsTextStyle.angle = 0.0; - - ts.printText(psPtr, minPtr, vMin, (double)graphPtr_->bottom_); - vMin += (textWidth + spacing); - } - } - } -} - -void Axis::updateScrollbar(Tcl_Interp* interp, Tcl_Obj *scrollCmdObjPtr, - int first, int last, int width) -{ - double firstFract =0.0; - double lastFract = 1.0; - if (width > 0) { - firstFract = (double)first / (double)width; - lastFract = (double)last / (double)width; - } - Tcl_Obj *cmdObjPtr = Tcl_DuplicateObj(scrollCmdObjPtr); - Tcl_ListObjAppendElement(interp, cmdObjPtr, Tcl_NewDoubleObj(firstFract)); - Tcl_ListObjAppendElement(interp, cmdObjPtr, Tcl_NewDoubleObj(lastFract)); - Tcl_IncrRefCount(cmdObjPtr); - if (Tcl_EvalObjEx(interp, cmdObjPtr, TCL_EVAL_GLOBAL) != TCL_OK) { - Tcl_BackgroundError(interp); - } - Tcl_DecrRefCount(cmdObjPtr); -} - -void Axis::getGeometry() -{ - AxisOptions* ops = (AxisOptions*)ops_; - GraphOptions* gops = (GraphOptions*)graphPtr_->ops_; - - freeTickLabels(); - - // Leave room for axis baseline and padding - unsigned int y =0; - if (ops->exterior && (gops->plotRelief != TK_RELIEF_SOLID)) - y += ops->lineWidth + 2; - - maxTickHeight_ = maxTickWidth_ = 0; - - if (t1Ptr_) - delete t1Ptr_; - t1Ptr_ = generateTicks(&majorSweep_); - - if (t2Ptr_) - delete t2Ptr_; - t2Ptr_ = generateTicks(&minorSweep_); - - if (ops->showTicks) { - Ticks* t1Ptr = ops->t1UPtr ? ops->t1UPtr : t1Ptr_; - - int nTicks =0; - if (t1Ptr) - nTicks = t1Ptr->nTicks; - - unsigned int nLabels =0; - for (int ii=0; ii<nTicks; ii++) { - double x = t1Ptr->values[ii]; - double x2 = t1Ptr->values[ii]; - if (ops->labelOffset) - x2 += majorSweep_.step * 0.5; - - if (!inRange(x2, &axisRange_)) - continue; - - TickLabel* labelPtr = makeLabel(x); - tickLabels_->append(labelPtr); - nLabels++; - - // Get the dimensions of each tick label. Remember tick labels - // can be multi-lined and/or rotated. - int lw, lh; - graphPtr_->getTextExtents(ops->tickFont, labelPtr->string, -1, &lw, &lh); - labelPtr->width = lw; - labelPtr->height = lh; - - if (ops->tickAngle != 0.0f) { - // Rotated label width and height - double rlw, rlh; - graphPtr_->getBoundingBox(lw, lh, ops->tickAngle, &rlw, &rlh, NULL); - lw = rlw; - lh = rlh; - } - if (maxTickWidth_ < int(lw)) - maxTickWidth_ = lw; - - if (maxTickHeight_ < int(lh)) - maxTickHeight_ = lh; - } - - unsigned int pad =0; - if (ops->exterior) { - // Because the axis cap style is "CapProjecting", we need to - // account for an extra 1.5 linewidth at the end of each line - pad = ((ops->lineWidth * 12) / 8); - } - if (isHorizontal()) - y += maxTickHeight_ + pad; - else { - y += maxTickWidth_ + pad; - if (maxTickWidth_ > 0) - // Pad either size of label. - y += 5; - } - y += 2 * AXIS_PAD_TITLE; - if ((ops->lineWidth > 0) && ops->exterior) - // Distance from axis line to tick label. - y += ops->tickLength; - - } // showTicks - - if (ops->title) { - if (ops->titleAlternate) { - if (y < titleHeight_) - y = titleHeight_; - } - else - y += titleHeight_ + AXIS_PAD_TITLE; - } - - // Correct for orientation of the axis - if (isHorizontal()) - height_ = y; - else - width_ = y; -} - |