adding and implementing logo component

client/src/app/shared/components/logo/logo.component.html

@@ -0,0 +1,3 @@
+<div *ngIf="getImage() != ''" class="logo-container">
+    <img [src]="getImage()">
+</div>

client/src/app/shared/components/logo/logo.component.scss

@@ -0,0 +1,10 @@
+img {
+    max-width: 100%;
+    height: auto;
+    max-height: 100%;
+}
+
+.logo-container {
+    width: 100%;
+    text-align: center;
+}

client/src/app/shared/components/logo/logo.component.spec.ts

@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { E2EImportsModule } from 'e2e-imports.module';
+import { LogoComponent } from './logo.component';
+
+describe('LogoComponent', () => {
+    let component: LogoComponent;
+    let fixture: ComponentFixture<LogoComponent>;
+
+    beforeEach(async(() => {
+        TestBed.configureTestingModule({
+            imports: [E2EImportsModule]
+        }).compileComponents();
+    }));
+
+    beforeEach(() => {
+        fixture = TestBed.createComponent(LogoComponent);
+        component = fixture.componentInstance;
+        fixture.detectChanges();
+    });
+
+    it('should create', () => {
+        expect(component).toBeTruthy();
+    });
+});

client/src/app/shared/components/logo/logo.component.ts

@@ -0,0 +1,155 @@
+import { Component, OnInit, Input } from '@angular/core';
+import { MediaManageService } from '../../../site/mediafiles/services/media-manage.service';
+
+/**
+ * Reusable Logo component for Apps.
+ *
+ * Following actions are possible:
+ * * "logo_projector_main"
+ * * "logo_projector_header"
+ * * "logo_web_header"
+ * * "logo_pdf_header_L"
+ * * "logo_pdf_header_R"
+ * * "logo_pdf_footer_L"
+ * * "logo_pdf_footer_R"
+ * * "logo_pdf_ballot_paper"
+ *
+ * ## Examples:
+ *
+ * ### Usage of the selector:
+ *
+ * ```html
+ * <os-logo
+ *   inputAction="logo_projector_main"
+ *   [footer]="false"
+ *   [alignment]="right">
+ * </os-logo>
+ * ```
+ *
+ * Sidenote: The footer variable is optional. Only if you want
+ * alternating logos, i.E. in the sidenav. the Alignment is also
+ * optional.
+ */
+@Component({
+    selector: 'os-logo',
+    templateUrl: './logo.component.html',
+    styleUrls: ['./logo.component.scss']
+})
+export class LogoComponent implements OnInit {
+    /**
+     * Constant path of the dark logo
+     */
+    public static STANDARD_LOGO = '/assets/img/openslides-logo-h.svg';
+
+    /**
+     * Holds the actions for logos. Updated via an observable
+     */
+    public logoActions: string[];
+
+    /**
+     * decides based on the actionString how to display the logo
+     */
+    @Input()
+    public inputAction: string;
+
+    /**
+     * determines if the current picture is displayed in the footer.
+     * Optional.
+     */
+    @Input()
+    public footer = false;
+
+    /**
+     * influences text-alignment in the .logo-container css class
+     */
+    @Input()
+    public alignment = 'center';
+    /**
+     * The consotructor
+     *
+     * @param mmservice The Media Manage Service
+     */
+    public constructor(private mmservice: MediaManageService) {}
+
+    /**
+     * Initialization function
+     */
+    public ngOnInit(): void {
+        this.mmservice.getLogoActions().subscribe(action => {
+            this.logoActions = action;
+        });
+    }
+
+    /**
+     * gets the image based on the inputAction and location.
+     * Possible inputActions are in the class description.
+     *
+     * @returns path to image
+     */
+    public getImage(): string {
+        if (this.footer) {
+            const path = this.getFooterImage(this.inputAction);
+            return path;
+        } else {
+            const path = this.getHeaderImage(this.inputAction, this.alignment);
+            return path;
+        }
+    }
+
+    /**
+     * gets the header image based on logo action
+     *
+     * @param logoAction the logo action to be used
+     * @param alignment the alignment of the logo (optional)
+     * @returns path to image
+     */
+    protected getHeaderImage(logoAction: string, alignment: string = 'center'): string {
+        if (alignment !== 'center') {
+            this.setAlignment(alignment);
+        }
+        let path = '';
+        /* check if datastore is loaded and custom logo can be read */
+        if (this.logoActions === undefined) {
+            return '';
+        }
+        if (this.mmservice !== undefined) {
+            if (this.mmservice.isImageConfigObject(this.mmservice.getMediaConfig(logoAction))) {
+                const imageConfig = this.mmservice.getMediaConfig(logoAction);
+                path = imageConfig.path;
+            }
+        }
+        if (path === '') {
+            path = LogoComponent.STANDARD_LOGO;
+        }
+        return path;
+    }
+
+    /**
+     * Changes the alignment from center to either 'left' or 'right'
+     *
+     * @param alignment either 'right' or 'left'
+     */
+    private setAlignment(alignment: string): void {
+        if (alignment === 'left' || alignment === 'right') {
+            const cssLogoContainer = document.getElementsByClassName('logo-container') as HTMLCollectionOf<HTMLElement>;
+            if (cssLogoContainer.length !== 0) {
+                cssLogoContainer[0].style.textAlign = alignment;
+            }
+        }
+    }
+
+    /**
+     * Returns the image-path for the footer
+     *
+     * @param logoAction the logo action to be used
+     * @returns '' if no logo is set and path to standard logo if a custom
+     *  logo was set
+     */
+    protected getFooterImage(logoAction: string): string {
+        if (this.getHeaderImage(logoAction) === LogoComponent.STANDARD_LOGO || this.getHeaderImage(logoAction) === '') {
+            return '';
+        } else {
+            return LogoComponent.STANDARD_LOGO;
+        }
+    }
+}

client/src/app/shared/shared.module.ts

@@ -70,6 +70,7 @@ import { ChoiceDialogComponent } from './components/choice-dialog/choice-dialog.
 import { OsSortFilterBarComponent } from './components/os-sort-filter-bar/os-sort-filter-bar.component';
 import { OsSortBottomSheetComponent } from './components/os-sort-filter-bar/os-sort-bottom-sheet/os-sort-bottom-sheet.component';
 import { FilterMenuComponent } from './components/os-sort-filter-bar/filter-menu/filter-menu.component';
+import { LogoComponent } from './components/logo/logo.component';
 
 /**
  * Share Module for all "dumb" components and pipes.
@@ -171,7 +172,8 @@ import { FilterMenuComponent } from './components/os-sort-filter-bar/filter-menu
         EditorModule,
         SortingTreeComponent,
         TreeModule,
-        OsSortFilterBarComponent
+        OsSortFilterBarComponent,
+        LogoComponent
     ],
     declarations: [
         PermsDirective,
@@ -188,7 +190,8 @@ import { FilterMenuComponent } from './components/os-sort-filter-bar/filter-menu
         ChoiceDialogComponent,
         OsSortFilterBarComponent,
         OsSortBottomSheetComponent,
-        FilterMenuComponent
+        FilterMenuComponent,
+        LogoComponent
     ],
     providers: [
         { provide: DateAdapter, useClass: OpenSlidesDateAdapter },

client/src/app/site/mediafiles/services/media-manage.service.ts

@@ -79,6 +79,18 @@ export class MediaManageService {
         return this.httpService.put<void>(restPath, payload);
     }
 
+    /**
+     * Checks if an image is an imageConfig Object
+     *
+     * @param object instance of something to check
+     * @returns boolean if an object is a ImageConfigObject
+     */
+    public isImageConfigObject(object: any): object is ImageConfigObject {
+        if (object !== undefined) {
+            return (<ImageConfigObject>object).path !== undefined;
+        }
+    }
+
     /**
      * Get all actions that can be executed on images
      *

client/src/app/site/site.component.html

@@ -10,10 +10,14 @@
         disableClose="!vp.isMobile"
         class="side-panel"
     >
-        <mat-toolbar class="nav-toolbar">
+        <div class="nav-toolbar">
             <!-- logo -->
-            <mat-toolbar-row class="os-logo-container" routerLink="/" (click)="toggleSideNav()"></mat-toolbar-row>
-        </mat-toolbar>
+            <a routerLink="/" (click)="toggleSideNav()">
+                <os-logo class="os-logo-container"
+                    inputAction="logo_web_header"
+                    [footer]="false"></os-logo>
+            </a>
+        </div>
 
         <!-- User Menu -->
         <mat-expansion-panel class="user-menu mat-elevation-z0">
@@ -118,6 +122,11 @@
             >
                 <span><small>© Copyright by OpenSlides</small></span>
             </a>
+            <div class="os-footer-logo-container">
+                <os-logo inputAction="logo_web_header"
+                         footer="true">
+                </os-logo>
+            </div>
         </mat-nav-list>
     </mat-sidenav>
     <mat-sidenav-content>

client/src/app/site/site.component.scss

@@ -32,19 +32,35 @@ mat-sidenav-container {
     }
 }
 
-/* Logo container */
-.os-logo-container {
-    width: 200px;
-    margin-left: 10px;
-    background-image: url(/assets/img/openslides-logo-h.svg);
-    background-size: contain;
-    background-repeat: no-repeat;
-    background-position: center;
-    cursor: pointer;
+.nav-toolbar {
+    display: flex;
+    margin: auto;
+    width: 250px;
+    height: 80px;
+    align-items: center;
 }
+/* The top logo container can contain any logo with any size.
+   It needs to always fit.*/
+.os-logo-container {
+    margin: auto;
+    width: 250px !important;
+    max-height: 80px;
+    display: flex;
+}
+
+/* The footer container only appears when custom logo is
+   specified. It can only contain the standard logo */
+.os-footer-logo-container {
+    width: 150px;
+    margin-left: 10px;
+}
+
 .os-logo-container:focus,
 .os-logo-container:active,
-.os-logo-container:hover {
+.os-logo-container:hover,
+.os-footer-logo-container:focus,
+.os-footer-logo-container:active,
+.os-footer-logo-container:hover {
     border: none;
     outline: none;
 }