Fonctionnalité de zoom sur le profil de la passe

Aucune idée de si c'est pertinent ou non, mais je trouve ça sympa !

src/app/components/pab-profile-graph/pab-profile-graph.component.html

 <div class="graph-results-container" #graphProfile fxLayout="row wrap" fxLayoutAlign="center center">
     <div fxFlex="1 1 100%">
         <div class="graph-profile-buttons">
-            <button mat-icon-button (click)="resetZoom()">
+            <button mat-icon-button (click)="resetZoom()" [disabled]="! zoomWasChanged" [title]="uitextResetZoomTitle">
                 <mat-icon color="primary">replay</mat-icon>
             </button>
-            <button mat-icon-button (click)="exportAsImage(graphProfile)">
+            <button mat-icon-button (click)="exportAsImage(graphProfile)" [title]="uitextExportImageTitle">
                 <mat-icon color="primary">image</mat-icon>
             </button>
-            <button mat-icon-button *ngIf="! isFullscreen" (click)="setFullscreen(graphProfile)">
+            <button mat-icon-button *ngIf="! isFullscreen" (click)="setFullscreen(graphProfile)" [title]="uitextEnterFSTitle">
                 <mat-icon color="primary" class="scaled12">fullscreen</mat-icon>
             </button>
-            <button mat-icon-button *ngIf="isFullscreen" (click)="exitFullscreen()">
+            <button mat-icon-button *ngIf="isFullscreen" (click)="exitFullscreen()" [title]="uitextExitFSTitle">
                 <mat-icon color="primary" class="scaled12">fullscreen_exit</mat-icon>
             </button>
         </div>