feat(Options): add option to not draw metronome marks (#680)

part of #680

src/MusicalScore/Graphical/EngravingRules.ts

@@ -174,6 +174,7 @@ export class EngravingRules {
     private subMeasureXSpacingThreshold: number;
     private measureDynamicsMaxScalingFactor: number;
     private wholeRestXShiftVexflow: number;
+    private metronomeMarksDrawn: boolean;
     private metronomeMarkXShift: number;
     private metronomeMarkYShift: number;
     private maxInstructionsConstValue: number;
@@ -417,6 +418,7 @@ export class EngravingRules {
         this.subMeasureXSpacingThreshold = 35;
         this.measureDynamicsMaxScalingFactor = 2.5;
         this.wholeRestXShiftVexflow = -2.5; // VexFlow draws rest notes too far to the right
+        this.metronomeMarksDrawn = true;
         this.metronomeMarkXShift = -6; // our unit, is taken * unitInPixels
         this.metronomeMarkYShift = -0.5;
 
@@ -1369,6 +1371,12 @@ export class EngravingRules {
     public set WholeRestXShiftVexflow(value: number) {
         this.wholeRestXShiftVexflow = value;
     }
+    public get MetronomeMarksDrawn(): boolean {
+        return this.metronomeMarksDrawn;
+    }
+    public set MetronomeMarksDrawn(value: boolean) {
+        this.metronomeMarksDrawn = value;
+    }
     public get MetronomeMarkXShift(): number {
         return this.metronomeMarkXShift;
     }

src/MusicalScore/Graphical/MusicSheetCalculator.ts

@@ -1373,9 +1373,11 @@ export abstract class MusicSheetCalculator {
                         // in their constructor
                     }
                     // in case of metronome mark:
-                    if ((entry.Expression as InstantaneousTempoExpression).Enum === TempoEnum.metronomeMark) {
-                        this.createMetronomeMark((entry.Expression as InstantaneousTempoExpression));
-                        continue;
+                    if (this.rules.MetronomeMarksDrawn) {
+                        if ((entry.Expression as InstantaneousTempoExpression).Enum === TempoEnum.metronomeMark) {
+                            this.createMetronomeMark((entry.Expression as InstantaneousTempoExpression));
+                            continue;
+                        }
                     }
                 } else if (entry.Expression instanceof ContinuousTempoExpression) {
                     // FIXME: Not yet implemented

src/OpenSheetMusicDisplay/OSMDOptions.ts

@@ -69,6 +69,8 @@ export interface IOSMDOptions {
     drawComposer?: boolean;
     /** Whether to draw the lyricist's name, if given (top left of the score). */
     drawLyricist?: boolean;
+    /** Whether to draw metronome marks. Default true. (currently OSMD can only draw one at the beginning) */
+    drawMetronomeMarks?: boolean;
     /** Whether to draw part (instrument) names. Setting this to false also disables drawPartAbbreviations,
      *  unless explicitly enabled (drawPartNames: false, drawPartAbbreviations: true).
      */

src/OpenSheetMusicDisplay/OpenSheetMusicDisplay.ts

@@ -403,6 +403,9 @@ export class OpenSheetMusicDisplay {
         if (options.drawLyricist !== undefined) {
             this.drawingParameters.DrawLyricist = options.drawLyricist;
         }
+        if (options.drawMetronomeMarks !== undefined) {
+            this.rules.MetronomeMarksDrawn = options.drawMetronomeMarks;
+        }
         if (options.drawPartNames !== undefined) {
             this.drawingParameters.DrawPartNames = options.drawPartNames; // indirectly writes to EngravingRules