go4canvas.mjs

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import { ObjectPainter, getHPainter, addDrawFunc, create, gStyle, draw, floatToString, getElementMainPainter } from 'jsroot';
 
import { addMoveHandler } from 'jsrootsys/modules/gui/utils.mjs';
 
import { GO4 } from './core.mjs';
 
import { ConditionEditor } from './condition.mjs';
 
GO4.web_canvas = true;
 
function findPainter(painter, obj, name, typ) {
   let pp = painter.getPadPainter();
   return pp ? pp.findPainterFor(obj, name, typ) : null;
}
 
class MarkerPainter extends ObjectPainter{
   constructor(dom, marker) {
      super(dom, marker);
      this.pave = null; // drawing of stat
   }
 
   moveDrag(dx,dy) {
      this.grx += dx;
      this.gry += dy;
      this.draw_g.select('path').attr("d",this.markeratt.create(this.grx, this.gry));
   }
 
   moveEnd() {
      let marker = this.getObject();
      marker.fX = this.svgToAxis("x", this.grx);
      marker.fY = this.svgToAxis("y", this.gry);
      let exec = `SetXY(${marker.fX},${marker.fY})`;
      this.submitCanvExec(exec);
      this.drawLabel();
   }
 
   drawMarker() {
      let g = this.createG(), // can draw in complete pad
          marker = this.getObject();
 
      this.createAttMarker({ attr: marker });
 
      this.grx = this.axisToSvg("x", marker.fX);
      this.gry = this.axisToSvg("y", marker.fY);
 
      let path = this.markeratt.create(this.grx, this.gry);
 
      if (path)
            g.append("svg:path")
               .attr("d", path)
               .call(this.markeratt.func);
 
      addMoveHandler(this);
   }
 
   fillLabels(marker) {
      let lbls = [],
            rect = this.getFramePainter().getFrameRect(),
            main = this.getMainPainter(), hint = null;
 
      if (main && typeof main.processTooltipEvent == 'function')
         hint = main.processTooltipEvent({ enabled: false, x: this.grx - rect.x, y: this.gry - rect.y });
 
      lbls.push(marker.fxName + ((hint && hint.name) ? (" : " + hint.name) : ""));
 
      if (marker.fbXDraw)
            lbls.push("X = " + floatToString(marker.fX, "6.4g"));
 
      if (marker.fbYDraw)
         lbls.push("Y = " + floatToString(marker.fY, "6.4g"));
 
      if (hint && hint.user_info) {
         if (marker.fbXbinDraw) {
            let bin = "<undef>";
            if (hint.user_info.binx !== undefined) bin = hint.user_info.binx; else
            if (hint.user_info.bin !== undefined) bin = hint.user_info.bin;
            lbls.push("Xbin = " + bin);
         }
 
         if (marker.fbYbinDraw) {
            lbls.push("Ybin = " + ((hint.user_info.biny !== undefined) ? hint.user_info.biny : "<undef>"));
         }
 
         if (marker.fbContDraw)
            lbls.push("Cont = " + hint.user_info.cont);
      }
 
      return lbls;
   }
 
   drawLabel() {
 
      let marker = this.getObject();
 
      if (!marker.fbHasLabel)
         return Promise.resolve(this);
 
      let pave_painter = findPainter(this, this.pave);
 
      if (!pave_painter) {
         this.pave = create("TPaveStats");
         this.pave.fName = "stats_" + marker.fName;
 
         let pp = this.getPadPainter(),
               pad_width = pp.getPadWidth(),
               pad_height = pp.getPadHeight();
 
         let px = this.grx / pad_width + 0.02,
             py = this.gry / pad_height - 0.02;
         Object.assign(this.pave, { fX1NDC: px, fY1NDC: py - 0.15, fX2NDC: px + 0.2, fY2NDC: py, fBorderSize: 1, fFillColor: 0, fFillStyle: 1001 });
 
         const st = gStyle;
         Object.assign(this.pave, { fFillColor: st.fStatColor, fFillStyle: st.fStatStyle, fTextAngle: 0, fTextSize: st.fStatFontSize,
                                    fTextAlign: 12, fTextColor: st.fStatTextColor, fTextFont: st.fStatFont });
      } else {
         this.pave.Clear();
      }
 
      let lbls = this.fillLabels(marker);
      for (let k = 0; k < lbls.length; ++k)
         this.pave.AddText(lbls[k]);
 
      let pr = pave_painter ? pave_painter.redraw() :
               draw(this.getDrawDom(), this.pave, "").then(p => { if (p) p.$secondary = true; });
      return pr.then(() => this);
   }
 
   redrawObject(obj) {
      if (!this.updateObject(obj)) return false;
      this.redraw(); // no need to redraw complete pad
      return true;
   }
 
   cleanup(arg) {
      if (this.pave) {
         let pp = findPainter(this, this.pave);
         if (pp) {
            pp.removeFromPadPrimitives();
            pp.cleanup();
         }
         delete this.pave;
      }
 
      super.cleanup(arg);
   }
 
   redraw() {
      this.drawMarker();
      return this.drawLabel();
   }
 
//   fillContextMenu(menu) {
//      let marker = this.getObject();
//      menu.add("header:"+ marker._typename + "::" + marker.fxName);
//      function select(name,exec) {
//         let marker = this.getObject();
//         marker[name] = !marker[name];
//         this.submitCanvExec(exec + (marker[name] ? '(true)' : '(false)'));
//         this.redraw();
//      }
//      menu.addchk(marker.fbHasLabel, 'Label', select.bind(this, 'fbHasLabel', 'SetLabelDraw'));
//      menu.addchk(marker.fbHasConnector, 'Connector', select.bind(this, 'fbHasConnector', 'SetLineDraw'));
//      menu.addchk(marker.fbXDraw, 'Draw X', select.bind(this, 'fbXDraw', 'SetXDraw'));
//      menu.addchk(marker.fbYDraw, 'Draw Y', select.bind(this, 'fbYDraw', 'SetYDraw'));
//      menu.addchk(marker.fbXbinDraw, 'Draw X bin', select.bind(this, 'fbXbinDraw', 'SetXbinDraw'));
//      menu.addchk(marker.fbYbinDraw, 'Draw Y bin', select.bind(this, 'fbYbinDraw', 'SetYbinDraw'));
//      menu.addchk(marker.fbContDraw, 'Draw content', select.bind(this, 'fbContDraw', 'SetContDraw'));
//      return true;
//   }
 
   processTooltipEvent(pnt) {
      if (!pnt) return null;
 
      let marker = this.getObject(),
            rect = this.getFramePainter().getFrameRect(),
            fx = rect.x,
            fy = rect.y,
            marker_sz = this.markeratt.getFullSize();
 
      let hint = { name: marker.fxName,
                     title: marker.fxName,
                     painter: this,
                     menu: true,
                     x: this.grx - fx,
                     y: this.gry - fy,
                     color1: this.markeratt.color };
 
      let dist = Math.sqrt(Math.pow(pnt.x - hint.x, 2) + Math.pow(pnt.y - hint.y, 2));
 
      hint.menu_dist = dist;
 
      if (dist < 2.5 * marker_sz) hint.exact = true;
 
      if (hint.exact)
         hint.lines = this.fillLabels(marker);
 
      // res.menu = res.exact; // activate menu only when exactly locate bin
      // res.menu_dist = 3; // distance always fixed
 
      return hint;
   }
 
   ShowTooltip(hint) {}
 
   static draw(dom, obj, /*, option */) {
      const painter = new MarkerPainter(dom, obj);
      painter.drawMarker();
      painter.addToPadPrimitives();
      painter.drawLabel();
      return painter.drawLabel();
   }
 
} // class MarkerPainter
 
 
// =========================================================================
 
class ConditionPainter extends ObjectPainter {
   constructor(dom, cond) {
      super(dom, cond);
      this.pave = null; // drawing of stat
   }
 
   Test(x,y) {
      //  JAM: need to put this here, since condition object will lose internal definition after cloning it again!
      let cond = this.getObject();
      if (!cond.fbEnabled)
         return cond.fbResult;
 
      if (cond.fxCut)
         return cond.fxCut.IsInside(x,y) ? cond.fbTrue : cond.fbFalse;
 
      if ((x < cond.fLow1) || (x > cond.fUp1)) return cond.fbFalse;
 
      if ((cond.fiDim==2) && ((y < cond.fLow2) || (y > cond.fUp2))) return cond.fbFalse;
 
      return cond.fbTrue;
   }
 
 
   isPolyCond() {
      return this.matchObjectType("TGo4PolyCond") || this.matchObjectType("TGo4ShapedCond");
   }
 
   isEllipseCond() {
      return this.matchObjectType("TGo4ShapedCond");
   }
 
   afterCutDraw(p) {
      if (!p || !this.snapid || p._oldexec) return;
      p.snapid = this.snapid + "#member_fxCut";
      p._condpainter = this;
 
      // catch TCutG exec and mark condition as modified
      p._oldexec = p.submitCanvExec;
      p.submitCanvExec = function(exec, arg) {
         this._oldexec(exec, arg);
         p._condpainter.submitCanvExec("SetChanged()");
      }
   }
 
   drawCondition(interactive) {
 
      let cond = this.getObject();
 
      if (!cond || !cond.fbVisible) return;
 
      if (this.isPolyCond()) {
         if (cond.fxCut) {
            // look here if cut is already drawn
            let cutpaint = findPainter(this, null, cond.fName, 'TCutG');
 
            if (cutpaint) {
               if (cutpaint.updateObject(cond.fxCut)) cutpaint.redraw();
               this.afterCutDraw(cutpaint);
            } else {
               cond.fxCut.fFillStyle = 3006;
               cond.fxCut.fFillColor = 2;
               draw(this.getDrawDom(), cond.fxCut, "LF").then(p => this.afterCutDraw(p));
            }
 
         }
         return;
      }
 
      let g = this.createG(true); // drawing performed inside frame
 
      if ((cond.fFillStyle==1001) && (cond.fFillColor==19)) {
         cond.fFillStyle = 3006;
         cond.fFillColor = 2;
      }
 
      this.createAttFill({attr: cond});
      this.createAttLine({attr: cond});
 
      this.grx1 = this.axisToSvg("x", cond.fLow1);
      this.grx2 = this.axisToSvg("x", cond.fUp1);
 
      if (cond.fiDim == 2) {
         this.gry1 = this.axisToSvg("y", cond.fUp2);
         this.gry2 = this.axisToSvg("y", cond.fLow2);
         this.candy = true;
      } else {
         this.gry1 = 0;
         this.gry2 = this.getFramePainter().getFrameHeight();
         this.candy = false;
      }
 
      g.append("svg:rect")
               .attr("x", this.grx1)
               .attr("y", this.gry1)
               .attr("width", this.grx2 - this.grx1)
               .attr("height", this.gry2 - this.gry1)
               .call(this.lineatt.func)
               .call(this.fillatt.func);
 
      addMoveHandler(this);
   }
 
   moveStart(x,y) {
      this.swapx = this.swapy = false;
      this.dx1 = Math.abs(x-this.grx1) < 5;
      this.dx2 = Math.abs(x-this.grx2) < 5;
      this.dy1 = Math.abs(y-this.gry1) < 5;
      this.dy2 = Math.abs(y-this.gry2) < 5;
      if (!this.dx1 && !this.dx2 && !this.dy1 && !this.dy2)
         this.dx1 = this.dx2 = this.dy1 = this.dy2 = true;
      if (!this.candy) this.dy1 = this.dy2 = false;
   }
 
   moveDrag(dx,dy) {
      if (this.dx1) this.grx1 += dx;
      if (this.dx2) this.grx2 += dx;
      if (this.grx1 > this.grx2) {
         this.swapx = true;
         let tempx = this.grx1; this.grx1 = this.grx2; this.grx2 = tempx;
         tempx = this.dx1; this.dx1 = this.dx2; this.dx2 = tempx;
      }
      if (this.dy1) this.gry1 += dy;
      if (this.dy2) this.gry2 += dy;
      if (this.gry1 > this.gry2) {
         this.swapy = true;
         let tempy = this.gry1; this.gry1 = this.gry2; this.gry2 = tempy;
         tempy = this.dy1; this.dy1 = this.dy2; this.dy2 = tempy;
      }
      this.draw_g.select('rect').attr("x",this.grx1).attr("y", this.gry1)
                  .attr("width", this.grx2 - this.grx1).attr("height", this.gry2 - this.gry1);
   }
 
   moveEnd() {
      let cond = this.getObject(), exec = "";
      if (this.dx1 || this.swapx) { cond.fLow1 = this.svgToAxis("x", this.grx1); exec += "SetXLow(" + cond.fLow1 + ");;"; }
      if (this.dx2 || this.swapx) { cond.fUp1 = this.svgToAxis("x", this.grx2); exec += "SetXUp(" + cond.fUp1 + ");;"; }
      if (this.dy2 || this.swapy) { cond.fLow2 = this.svgToAxis("y", this.gry2); exec += "SetYLow(" + cond.fLow2 + ");;"; }
      if (this.dy1 || this.swapy) { cond.fUp2 = this.svgToAxis("y", this.gry1); exec += "SetYUp(" + cond.fUp2 + ");;"; }
      if (exec) {
         this.submitCanvExec(exec + "SetChanged()");
         this.drawLabel();
      }
   }
 
   drawLabel() {
 
      let cond = this.getObject(), painter = this, stat = {};
 
      if (!cond.fbLabelDraw || !cond.fbVisible)
         return Promise.resolve(this);
 
      let pave_painter = findPainter(this, this.pave);
 
      if (!pave_painter) {
         this.pave = create('TPaveStats');
         this.pave.fName = 'stats_' + cond.fName;
         Object.assign(this.pave, { fX1NDC: 0.1, fY1NDC: 0.4, fX2NDC: 0.4, fY2NDC: 0.65, fBorderSize: 1, fFillColor: 0, fFillStyle: 1001 });
 
         const st = gStyle;
         Object.assign(this.pave, { fFillColor: st.fStatColor, fFillStyle: st.fStatStyle, fTextAngle: 0, fTextSize: st.fStatFontSize,
                                    fTextAlign: 12, fTextColor: st.fStatTextColor, fTextFont: st.fStatFont});
      } else {
         this.pave.Clear();
      }
 
      this.pave.AddText(cond.fName);
 
      this.pave.AddText("Counts = " + cond.fiCounts);
 
      if (cond.fbLimitsDraw)
         if (this.isPolyCond()) {
            let res = { xmin: 0, xmax: 0, ymin: 0, ymax: 0 };
            if (cond.fxCut.fNpoints > 0) {
               res.xmin = res.xmax = cond.fxCut.fX[0];
               res.ymin = res.ymax = cond.fxCut.fY[0];
               for (let i=1; i<cond.fxCut.fNpoints; i++) {
                  res.xmin = Math.min(res.xmin, cond.fxCut.fX[i]);
                  res.xmax = Math.max(res.xmax, cond.fxCut.fX[i]);
                  res.ymin = Math.min(res.ymin, cond.fxCut.fY[i]);
                  res.ymax = Math.max(res.ymax, cond.fxCut.fY[i]);
               }
            }
            this.pave.AddText("Xmin = " + res.xmin);
            this.pave.AddText("Xmax = " + res.xmax);
            this.pave.AddText("Ymin = " + res.ymin);
            this.pave.AddText("Ymax = " + res.ymax);
         } else {
            this.pave.AddText("Xmin = " + cond.fLow1);
            this.pave.AddText("Xmax = " + cond.fUp1);
            if (cond.fiDim==2) {
               this.pave.AddText("Ymin = " + cond.fLow2);
               this.pave.AddText("Ymax = " + cond.fUp2);
            }
         }
 
      stat = this.getMainPainter().countStat((x,y) => painter.Test(x,y));
 
      if (cond.fbIntDraw) this.pave.AddText("Integral = " + floatToString(stat.integral, "14.7g"));
 
      if (cond.fbXMeanDraw) this.pave.AddText("Mean x = " + floatToString(stat.meanx, "6.4g"));
 
      if (cond.fbXRMSDraw) this.pave.AddText("RMS x = " + floatToString(stat.rmsx, "6.4g"));
 
      if (cond.fiDim==2) {
         if (cond.fbYMeanDraw) this.pave.AddText("Mean y = " + floatToString(stat.meany, "6.4g"));
         if (cond.fbYRMSDraw) this.pave.AddText("RMS y = " + floatToString(stat.rmsy, "6.4g"));
      }
 
      if (cond.fbXMaxDraw) this.pave.AddText("X max = " + floatToString(stat.xmax, "6.4g"));
 
      if (cond.fiDim==2) {
         if (cond.fbYMaxDraw) this.pave.AddText("Y max = " + floatToString(stat.ymax, "6.4g"));
      }
 
      if (cond.fbCMaxDraw) this.pave.AddText("C max = " + floatToString(stat.wmax, "14.7g"));
 
      let pr = pave_painter ? pave_painter.redraw() : draw(this.getDrawDom(), this.pave, "nofillstats");
      return pr.then(() => this); // ensure that condition painter is returned
   }
 
//   fillContextMenu(menu) {
//      let cond = this.getObject();
//      menu.add("header:"+ cond._typename + "::" + cond.fName);
//      function select(name,exec) {
//         let cond = this.getObject();
//         cond[name] = !cond[name];
//         this.submitCanvExec(exec + (cond[name] ? '(true)' : '(false)'));
//         this.redraw();
//      }
//      menu.addchk(cond.fbLabelDraw, 'Label', select.bind(this, 'fbLabelDraw', 'SetLabelDraw'));
//      menu.addchk(cond.fbLimitsDraw, 'Limits', select.bind(this, 'fbLimitsDraw', 'SetLimitsDraw'));
//      menu.addchk(cond.fbIntDraw, 'Integral', select.bind(this, 'fbIntDraw', 'SetIntDraw'));
//      menu.addchk(cond.fbXMeanDraw, 'X mean', select.bind(this, 'fbXMeanDraw', 'SetXMeanDraw'));
//      menu.addchk(cond.fbXRMSDraw, 'X rms', select.bind(this, 'fbXRMSDraw', 'SetXRMSDraw'));
//      menu.addchk(cond.fbXMaxDraw, 'X max', select.bind(this, 'fbXMaxDraw', 'SetXMaxDraw'));
//      menu.addchk(cond.fbYMeanDraw, 'Y mean', select.bind(this, 'fbYMeanDraw', 'SetYMeanDraw'));
//      menu.addchk(cond.fbYRMSDraw, 'Y rms', select.bind(this, 'fbYRMSDraw', 'SetYRMSDraw'));
//      menu.addchk(cond.fbYMaxDraw, 'Y max', select.bind(this, 'fbYMaxDraw', 'SetYMaxDraw'));
//      return true;
//   }
 
   processTooltipEvent(pnt) {
      if (!pnt) return null;
 
      let cond = this.getObject(),
            hint = { name: cond.fName, title: cond.fTitle, painter: this, menu: true, x: pnt.x, y: pnt.y };
 
      if (!this.isPolyCond()) {
 
         hint.color1 = this.fillatt.color;
         hint.color2 = this.lineatt.color;
 
         hint.menu_dist = Math.sqrt(Math.pow(pnt.x - (this.grx1 + this.grx2)/2, 2) + Math.pow(pnt.y - (this.gry1 + this.gry2)/2, 2));
         hint.exact = (this.grx1 <= pnt.x) && (pnt.x <= this.grx2) && (this.gry1 <= pnt.y) && (pnt.y <= this.gry2);
         if (Math.abs(this.grx1 - pnt.x) < 5) hint.sidex = -1;
         if (Math.abs(this.grx2 - pnt.x) < 5) hint.sidex = 1;
         if (cond.fiDim == 2) {
            if (Math.abs(this.gry1 - pnt.y) < 5) hint.sidey = 1;
            if (Math.abs(this.gry2 - pnt.y) < 5) hint.sidey = -1;
         }
      }
 
      if (hint.exact)
         hint.lines = ["condition", cond.fName ];
 
      return hint;
   }
 
   redrawObject(obj) {
      if (!this.updateObject(obj)) return false;
      this.redraw(); // no need to redraw complete pad
      return true;
   }
 
   cleanup(arg) {
      if (this.pave) {
         let pp = findPainter(this, this.pave);
         if (pp) {
            pp.removeFromPadPrimitives();
            pp.cleanup();
         }
         delete this.pave;
      }
      super.cleanup(arg);
   }
 
   redraw() {
      this.drawCondition();
      return this.drawLabel();
   }
 
   static async draw(dom, cond, option) {
 
      if (!option) option = "";
 
      let condpainter = new ConditionPainter(dom, cond),
            elem = condpainter.selectDom(),
            main = condpainter.getMainPainter();
 
      if (GO4.web_canvas || (option.indexOf('same') >= 0) || main) {
         // if no hist painter, do nothing, just return dummy
         if (!main)
            return condpainter;
         condpainter.drawCondition();
         condpainter.addToPadPrimitives();
         return condpainter.drawLabel();
      }
 
      // from here normal code for plain THttpServer
      if ((option=='editor') || !cond.fxHistoName) {
 
         const rect = elem.node().getBoundingClientRect();
         if ((rect.height < 10) && (rect.width > 10))
            elem.style("height", Math.round(rect.width*0.4) + "px");
         const editor = new ConditionEditor(dom, cond);
         return editor.drawEditor();
      }
 
      const hpainter = getHPainter();
      if (!hpainter) return;
 
      let histofullpath = null;
 
      hpainter.forEachItem(h => {
         if ((h._name == cond.fxHistoName) && h._kind && (h._kind.indexOf("ROOT.TH") == 0))
            histofullpath = hpainter.itemFullName(h);
      });
 
      if (histofullpath === null) {
         histofullpath = "../../Histograms/" + cond.fxHistoName;
 
         let hitem = hpainter.findItem({ name: histofullpath, force: true });
 
         hitem._kind = "ROOT.TH1I";
      }
 
      return hpainter.display(histofullpath, '', condpainter.getDrawDom()).then(hist_painter => {
         if (!hist_painter)
            return console.log('fail to draw histogram ' + histofullpath);
         condpainter.drawCondition();
         condpainter.addToPadPrimitives();
         return condpainter.drawLabel();
      });
   }
 
} // class ConditionPainter
 
function drawCondArray(dom, obj, option) {
   const arr = obj.condarr.arr,
         num = obj.fiNumCond,
         main = getElementMainPainter(dom);
   let first = null;
 
   function drawNext(i) {
      if (i >= num)
         return first;
 
      const cond = arr[i];
 
      if ((i === 0) && !cond.fxHistoName && !main) {
         cond.fxHistoName = obj.fxHistoName;
         if (!cond.fxHistoName)
            return null;
      }
 
      return ConditionPainter.draw(dom, cond, ((i > 0) || main) ? 'same' : '').then(p => {
         if (!first)
            first = p;
         return drawNext(i + 1);
      });
   }
 
   return drawNext(0);
}
 
addDrawFunc({ name: 'TGo4Marker', func: MarkerPainter.draw });
addDrawFunc({ name: 'TGo4WinCond', func: ConditionPainter.draw });
addDrawFunc({ name: 'TGo4PolyCond', func: ConditionPainter.draw });
addDrawFunc({ name: 'TGo4ShapedCond', func: ConditionPainter.draw });
addDrawFunc({ name: 'TGo4CondArray', func: drawCondArray });
 
export { MarkerPainter, ConditionPainter, drawCondArray };