Partially scale and scroll the motion slide

client/src/app/shared/components/slide-container/slide-container.component.scss

@@ -7,7 +7,7 @@
         position: absolute;
         left: 50px;
         top: 50px;
-        line-height: 1.5em;
+        line-height: 1.5;
     }
 }
 

client/src/app/shared/components/slide-container/slide-container.component.ts

@@ -8,6 +8,7 @@ import { BaseSlideComponent } from 'app/slides/base-slide-component';
 import { SlideData } from 'app/core/core-services/projector-data.service';
 import { ProjectorElement } from 'app/shared/models/core/projector';
 import { ViewProjector } from 'app/site/projector/models/view-projector';
+import { isBaseScaleScrollSlideComponent } from 'app/slides/base-scale-scroll-slide-component';
 
 function hasError(obj: object): obj is { error: string } {
     return (<{ error: string }>obj).error !== undefined;
@@ -28,6 +29,13 @@ export class SlideContainerComponent extends BaseComponent {
     private slide: ViewContainerRef;
     private slideRef: ComponentRef<BaseSlideComponent<object>>;
 
+    /**
+     * A slide is autonomic, if it takes care of scaling and scrolling by itself.
+     */
+    private get slideIsAutonomic(): boolean {
+        return !!this.slideRef && !!this.slideRef.instance && isBaseScaleScrollSlideComponent(this.slideRef.instance);
+    }
+
     /**
      * The data for this slide. Will be accessed below.
      */
@@ -59,8 +67,9 @@ export class SlideContainerComponent extends BaseComponent {
         if (this.previousSlideName !== slideData.element.name) {
             this.slideChanged(slideData.element);
             this.previousSlideName = slideData.element.name;
+        } else {
+            this.setDataForComponent();
         }
-        this.setDataForComponent();
     }
 
     public get slideData(): SlideData<object> {
@@ -77,6 +86,7 @@ export class SlideContainerComponent extends BaseComponent {
         this._projector = projector;
         this.setProjectorForComponent();
         this.updateScroll();
+        this.updateScale();
     }
 
     public get projector(): ViewProjector {
@@ -101,18 +111,19 @@ export class SlideContainerComponent extends BaseComponent {
         return this._scroll;
     }
 
+    private _scale: number;
+
     /**
      * Update the slideStyle, when the scale changes.
      */
     @Input()
     public set scale(value: number) {
-        if (this.slideOptions.scaleable) {
+        this._scale = value;
-            value *= 10;
+        this.updateScale();
-            value += 100;
+    }
-            this.slideStyle['font-size'] = `${value}%`;
+
-        } else {
+    public get scale(): number {
-            this.slideStyle['font-size'] = '100%';
+        return this._scale;
-        }
     }
 
     /**
@@ -133,10 +144,11 @@ export class SlideContainerComponent extends BaseComponent {
     }
 
     /**
-     * Updates the 'margin-top' attribute in the slide styles.
+     * Updates the 'margin-top' attribute in the slide styles. Propages the sroll to
+     * autonomic slides.
      */
     private updateScroll(): void {
-        if (this.slideOptions.scrollable) {
+        if (this.slideOptions.scrollable && !this.slideIsAutonomic) {
             let value = this.scroll;
             value *= -100;
             if (this.projector.show_header_footer) {
@@ -145,6 +157,28 @@ export class SlideContainerComponent extends BaseComponent {
             this.slideStyle['margin-top'] = `${value}px`;
         } else {
             this.slideStyle['margin-top'] = '0px';
+
+            if (this.slideIsAutonomic && isBaseScaleScrollSlideComponent(this.slideRef.instance)) {
+                this.slideRef.instance.scroll = this.scroll;
+            }
+        }
+    }
+
+    /**
+     * Updates the 'font-size' style attributes. Propagates the scale to autonomic slides.
+     */
+    private updateScale(): void {
+        if (this.slideOptions.scaleable && !this.slideIsAutonomic) {
+            let scale = this.scale;
+            scale *= 10;
+            scale += 100;
+            this.slideStyle['font-size'] = `${scale}%`;
+        } else {
+            this.slideStyle['font-size'] = '100%';
+
+            if (this.slideIsAutonomic && isBaseScaleScrollSlideComponent(this.slideRef.instance)) {
+                this.slideRef.instance.scale = this.scale;
+            }
         }
     }
 
@@ -170,6 +204,8 @@ export class SlideContainerComponent extends BaseComponent {
             this.slideRef = this.slide.createComponent(slideFactory);
             this.setDataForComponent();
             this.setProjectorForComponent();
+            this.updateScale();
+            this.updateScroll();
         });
     }
 

client/src/app/slides/base-scale-scroll-slide-component.ts

@@ -0,0 +1,32 @@
+import { Input } from '@angular/core';
+
+import { BaseSlideComponent } from './base-slide-component';
+
+export function isBaseScaleScrollSlideComponent<T extends object>(obj: any): obj is IBaseScaleScrollSlideComponent<T> {
+    return !!obj && obj.scroll !== undefined && obj.scale !== undefined;
+}
+
+/**
+ * A description of BaseScaleScrollSlideComponent. Usefull for "multi"-inheritance.
+ */
+export interface IBaseScaleScrollSlideComponent<T extends object> extends BaseSlideComponent<T> {
+    scroll: number;
+    scale: number;
+}
+
+/**
+ * A base slide component, which is autonomic with respect to scaling and srolling, meaning
+ * that the slide itself (and not the slide container) will take care of this.
+ */
+export abstract class BaseScaleScrollSlideComponent<T extends object> extends BaseSlideComponent<T>
+    implements IBaseScaleScrollSlideComponent<T> {
+    @Input()
+    public scroll: number;
+
+    @Input()
+    public scale: number;
+
+    public constructor() {
+        super();
+    }
+}

client/src/app/slides/motions/motion/motion-slide.component.html

@@ -1,5 +1,5 @@
 <div *ngIf="data">
-    <div id="sidebox" *ngIf="data.data.show_meta_box">
+    <div id="sidebox" *ngIf="data.data.show_meta_box" [ngStyle]="{'margin-top': projector.show_header_footer ? '144px' : '94px'}">
         <!-- Submitters -->
         <h3 translate>Submitters</h3>
         <span *ngFor="let submitter of data.data.submitter; let last = last">
@@ -13,13 +13,17 @@
         </div>
     </div>
 
-    <div [ngStyle]="{'width': data.data.show_meta_box ? 'calc(100% - 250px)' : '100%'}">
+    <div [ngStyle]="{width: data.data.show_meta_box ? 'calc(100% - 250px)' : '100%'}">
         <!-- Title -->
+        <div class="spacer" [ngStyle]="{height: projector.show_header_footer ? '50px' : '0'}"></div>
         <div class="slidetitle">
             <h1>{{ data.data.title }}</h1>
             <h2><span translate>Motion</span> {{ data.data.identifier }}</h2>
         </div>
+    </div>
 
+    <div id="text-wrapper">
+    <div id="text" [ngStyle]="textDivStyles">
         <!-- Text -->
         <span class="text-prefix-label">{{ preamble | translate }}</span>
 
@@ -73,4 +77,5 @@
             <div [innerHTML]="data.data.reason"></div>
         </div>
     </div>
+    </div>
 </div>

client/src/app/slides/motions/motion/motion-slide.component.scss

@@ -4,10 +4,22 @@
     opacity: 0.5;
 }
 
+/**
+ * Override some special values which will be set dynamically
+ */
+.slidetitle {
+    /* Original: 40px: This is done in the `scroll()` method, so the
+     * motion text will be cut (to be taken by word) on the grey line */
+    margin-bottom: 0px !important;
+
+    h1 {
+        margin: 0 !important;
+    }
+}
+
 #sidebox {
     width: 260px;
     right: 0;
-    margin-top: 94px;
     background: #d3d3d3;
     border-radius: 7px 0 0 7px;
     padding: 3px 7px 10px 10px;
@@ -21,13 +33,25 @@
     }
 }
 
+.spacer {
+    min-width: 1px;
+}
+
+#text-wrapper {
+    overflow: hidden;
+}
+
+#text {
+    position: relative;
+}
+
 /* override the absolute position of outside linenumbers on motion slide */
 :host ::ng-deep .motion-text {
     &.line-numbers-outside {
         .os-line-number {
             &:after {
                 top: 19px;
-                font-size: 13px;
+                font-size: 15px;
             }
         }
     }

client/src/app/slides/motions/motion/motion-slide.component.ts

@@ -13,13 +13,15 @@ import { SlideData } from '../../../core/core-services/projector-data.service';
 import { MotionSlideObjAmendmentParagraph } from './motion-slide-obj-amendment-paragraph';
 import { BaseMotionSlideComponent } from '../base/base-motion-slide';
 import { MotionRepositoryService } from 'app/core/repositories/motions/motion-repository.service';
+import { IBaseScaleScrollSlideComponent } from 'app/slides/base-scale-scroll-slide-component';
 
 @Component({
     selector: 'os-motion-slide',
     templateUrl: './motion-slide.component.html',
     styleUrls: ['./motion-slide.component.scss']
 })
-export class MotionSlideComponent extends BaseMotionSlideComponent<MotionSlideData> {
+export class MotionSlideComponent extends BaseMotionSlideComponent<MotionSlideData>
+    implements IBaseScaleScrollSlideComponent<MotionSlideData> {
     /**
      * Indicates the LineNumberingMode Mode.
      */
@@ -61,6 +63,8 @@ export class MotionSlideComponent extends BaseMotionSlideComponent<MotionSlideDa
         this.preamble = value.data.preamble;
         this.crMode = value.element.mode || 'original';
 
+        this.textDivStyles.width = value.data.show_meta_box ? 'calc(100% - 250px)' : '100%';
+
         this.recalcUnifiedChanges();
     }
 
@@ -68,6 +72,42 @@ export class MotionSlideComponent extends BaseMotionSlideComponent<MotionSlideDa
         return this._data;
     }
 
+    private _scroll = 0;
+
+    @Input()
+    public set scroll(value: number) {
+        this._scroll = value;
+
+        value *= -100;
+        value += 40;
+        this.textDivStyles['margin-top'] = `${value}px`;
+    }
+
+    public get scroll(): number {
+        return this._scroll;
+    }
+
+    private _scale = 0;
+
+    @Input()
+    public set scale(value: number) {
+        this._scale = value;
+
+        value *= 10;
+        value += 100;
+        this.textDivStyles['font-size'] = `${value}%`;
+    }
+
+    public get scale(): number {
+        return this._scale;
+    }
+
+    public textDivStyles: {
+        width?: string;
+        'margin-top'?: string;
+        'font-size'?: string;
+    } = {};
+
     public constructor(
         translate: TranslateService,
         motionRepo: MotionRepositoryService,