Book Reader Redesign with e-ink focus (#1246)

* Refactored the drawer into offcanvas component. Had to write some hacks to emulate how bootstrap's javascript implementation works as ngBootstrap doesn't have a component yet.

* Cleaned up some of the code

* Rewrote drawer to align it with the new design

* First pass, refactored table of content into it's own component

* Refactored all of the settings logic into a separate component. Everything is broken.

* More settings on on reactive form

* More code cleanup on settings

* Misc fixes around the drawer code. Fixed a bug where range sliders were inheriting background color of normal text inputs

* Fixed dark mode with book reader.

We now clear the theme from the main app so book reader is self-contained. Styles for dark mode are injected into the reading-section. Styles that were previously in scss are now only for the actual menu system.

* Cleaned up drawer styling on header

* Removed an ngIf statement for click to paginate

* Tweaked the accent style to have smaller font size and adjusted style on light mode. Cleaned up some clearTimeout code in a further effort to streamline codebase.

* Refactored Dark mode into a basic theme. Currently styles are hardcoded.

* Patched book theme in from themes branch

* Patched in the backend for Book Theme (not tested yet)

* Fixed a bug in seeding code for book themes. Started integration of themes into the reader settings

* Everything except managing themes is working. Themes are a bit shakey, having second thoughts if we should have them or not.

* Reverted the ability to do custom user book themes. Code is stable with system themes.

* Stablize the Styles (#1128)

* Fixed a bug where adding multiple series to reading list would throw an error on UI, but it was successful.

* When a series has a reading list, we now show the connection on Series detail.

* Removed all baseurl code from UI and not-connected component since we no longer use it.

* Fixed tag badges not showing a border. Added last read time to the series detail page

* Fixed up error interceptor to remove no-connection code

* Changed implementation for series detail. Book libraries will never send chapters back. Volume 0 volumes will not be sent in volumes ever. Fixed up more renaming logic on books to send more accurate representations to the UI.

* Cleaned up the selected tab and tab display logic

* Fixed a bad where statement in reading lists for series

* Fixed up tab logic again

* Fixed a small margin on search backdrop

* Made badge expander button smaller to align with badges

* Fixed a few UIs due to .form-group and .form-row being removed

* Updated Theme component page to help with style testing

* Added more components to theme tester

* Cleaned up some styling

* Fixed opacity on search item hover

* Bump versions by dotnet-bump-version.

* Tweaked the accordion styles for light mode

* Set dark book theme as default. Refactored resetSettings to be much cleaner

* Started the refactor to allow book themes to affect global css variables

* Fixed some issues with my css variable declarations

* Fixed a close model state update

* Lots of work, but dark mode on the book reader is basically done. We have to code the themes much like the site themes

* Some black theme enhancements

* Started working on column layout in book reader.

* Cleaned up the CSS on Reader Settings

* Hooked up reading direction

* Got column and double column layout working

* Implemented some basic virtual paging and hooked in book color theme and layout mode into user preferences.

* Migration wrote, can edit page layout and color theme on book reader. Removed book dark mode since no longer needed.

Fixed a bug on login/register forms where when input is focused, text is white and not black.

* When loading book reader, apply column layout.

* Lots of work around 2 column layout, working on images not splitting. Still not working, committing so i can merge develop in and validate code with new manga reader.

* Fixed images being split into 2 BUT regression on each page boundary, total reading height is smaller and smaller

* Fixed some rendering bugs where toggling column layouts would shrink images on screen constantly.

Fixed a bug where bottom bar wouldn't render on column layout in some conditions (this might need to be reworked)

* Started progress on progress work

* Updated .NET to 6.0.4

* Fixed a bug where DataContextModelSnapshot was being removed on build thus new migrations were broken.

* Tweaked the code around progress saving so that we don't loose track of last scroll element on page load

* Trying to restore progress, but stuck

* Extra merge stuff

* Fixed a bug where volumes that are a range fail to generate series detail

* No gutters on whole app. Book reader backend now applies the image class automatically at the backend.

* Added wiki documentation into invite user flow and register admin user to help users understand email isn't required and they can host their own service.

* Removed bottom padding

* Refactored the document height to be set and removed on nav service, so the book reader and manga reader aren't broken.

* Fixed the height of the action bar to simplify logic and keep the code cleaner. Refactored book service image scoping to be much more streamlined and efficient

* Fixed the height of action bar to 62px and adjusted code to use the hardcoded px. (code commented)

* Removed commented out code from fixed action bar height

* Progress restoration seems to be working

* Code cleanup

* Ensure the bottom action bar is at the bottom of the viewport on small pages

* Fixed book fonts not setting properly and added OpenDyslexic font.

* Fixed up some font issues

* Updated drawer so all sections are open by default

* Switched some LINQ to use MinBy

* When navigating between pages and column layout, adjust the shift for the user.

* Removed some debug code

* Blacklist .qpkg folders and don't scan Recently-Snapshot or recycle folders.

* Renamed the scale width to be scoped to kavita to avoid conflicts.

* Refactored ngx-sliders out to use normal range instead. Changed up the preferences to separate image and book settinngs into own accordion.

* updated user preferences for new migration options (not committed yet)

* Removed some debug code

* Remove console.logs

* Migration committed, let's release this to users.

* A lot of crazy code just to ensure that when you close drawer the toggle reflectst that state.

UI/Web/src/app/_services/theme.service.ts

@@ -10,13 +10,13 @@ import { SiteTheme, ThemeProvider } from '../_models/preferences/site-theme';
 import { EVENTS, MessageHubService } from './message-hub.service';
 
 
-
 @Injectable({
   providedIn: 'root'
 })
 export class ThemeService implements OnDestroy {
 
   public defaultTheme: string = 'dark';
+  public defaultBookTheme: string = 'Dark';
 
   private currentThemeSource = new ReplaySubject<SiteTheme>(1);
   public currentTheme$ = this.currentThemeSource.asObservable();
@@ -32,9 +32,9 @@ export class ThemeService implements OnDestroy {
   private readonly onDestroy = new Subject<void>();
   private renderer: Renderer2;
   private baseUrl = environment.apiUrl;
-  
 
-  constructor(rendererFactory: RendererFactory2, @Inject(DOCUMENT) private document: Document, private httpClient: HttpClient, 
+
+  constructor(rendererFactory: RendererFactory2, @Inject(DOCUMENT) private document: Document, private httpClient: HttpClient,
   messageHub: MessageHubService, private domSantizer: DomSanitizer, private confirmService: ConfirmService) {
     this.renderer = rendererFactory.createRenderer(null, null);
 
@@ -47,7 +47,7 @@ export class ThemeService implements OnDestroy {
       if (notificationEvent.name !== EVENTS.SiteThemeProgress) return;
 
       if (notificationEvent.eventType === 'ended') {
-        this.getThemes().subscribe(() => {});
+        if (notificationEvent.name === EVENTS.SiteThemeProgress) this.getThemes().subscribe(() => {});
       }
     });
   }
@@ -61,6 +61,10 @@ export class ThemeService implements OnDestroy {
     return getComputedStyle(this.document.body).getPropertyValue('--color-scheme').trim();
   }
 
+  getCssVariable(variable: string) {
+    return getComputedStyle(this.document.body).getPropertyValue(variable).trim();
+  }
+
   isDarkTheme() {
     return this.getColorScheme().toLowerCase() === 'dark';
   }
@@ -73,6 +77,13 @@ export class ThemeService implements OnDestroy {
     }));
   }
 
+  /**
+   * Used in book reader to remove all themes so book reader can provide custom theming options
+   */
+  clearThemes() {
+    this.unsetThemes();
+  }
+
   setDefault(themeId: number) {
     return this.httpClient.post(this.baseUrl + 'theme/update-default', {themeId: themeId}).pipe(map(() => {
       // Refresh the cache when a default state is changed
@@ -84,8 +95,25 @@ export class ThemeService implements OnDestroy {
     return this.httpClient.post(this.baseUrl + 'theme/scan', {});
   }
 
+  /**
+   * Sets the book theme on the body tag so css variable overrides can take place
+   * @param selector brtheme- prefixed string
+   */
+  setBookTheme(selector: string) {
+    this.unsetBookThemes();
+    this.renderer.addClass(this.document.querySelector('body'), selector);
+  }
 
-  setTheme(themeName: string) {
+  clearBookTheme() {
+    this.unsetBookThemes();
+  }
+
+
+  /**
+   * Sets the theme as active. Will inject a style tag into document to load a custom theme and apply the selector to the body
+   * @param themeName
+   */
+   setTheme(themeName: string) {
     const theme = this.themeCache.find(t => t.name.toLowerCase() === themeName.toLowerCase());
     if (theme) {
       this.unsetThemes();
@@ -132,4 +160,10 @@ export class ThemeService implements OnDestroy {
   private unsetThemes() {
     this.themeCache.forEach(theme => this.document.body.classList.remove(theme.selector));
   }
+
+  private unsetBookThemes() {
+    Array.from(this.document.body.classList).filter(cls => cls.startsWith('brtheme-')).forEach(c => this.document.body.classList.remove(c));
+  }
+
+
 }