From f4920504e5190835312bfa3e4630aeac39da6047 Mon Sep 17 00:00:00 2001
From: Aziz <119948730+aziz-access@users.noreply.github.com>
Date: Tue, 4 Jul 2023 15:25:09 +0200
Subject: [PATCH] feat(geo): Print with resolution PDF and image (#1264)

* feat(geo): Added rotate option and north direction to the map when printing

* solve lint and optimize map updateControls function

* integrate custom controle rotation-button component in the map

* adjust image in all template

* solve scale and rotate arrow color and position in pdf export

* code improvement and write documentations

* sove lint

* feat(geo): add resolution options for print module

* add resolution to image export

* solve lint

* code improvement

* code improvement eliminate repeated code

* solve lint

* code refactoring

* solve lint

* delete mapOverlayHTML from dom

* solve comments

* add type to map canvas

* delete console log

* merge branches and adjust code

* delete scaleLine from print demo component

* solve conflicts

* code improvement add resetOriginalMapSize, setMapImageResolution and setMapResolution for pdf

* add access modifiers to function
---
 .../print-form/print-form.component.html      |  2 +-
 .../src/lib/print/print/print.component.ts    |  4 +-
 .../geo/src/lib/print/shared/print.service.ts | 83 ++++++++++++++-----
 3 files changed, 65 insertions(+), 24 deletions(-)

diff --git a/packages/geo/src/lib/print/print-form/print-form.component.html b/packages/geo/src/lib/print/print-form/print-form.component.html
index 721cf8c7c0..4831d7cdbc 100644
--- a/packages/geo/src/lib/print/print-form/print-form.component.html
+++ b/packages/geo/src/lib/print/print-form/print-form.component.html
@@ -113,7 +113,7 @@
     </mat-form-field>
   </div>
 
-  <div class="igo-input-container" style="display: none;">
+  <div class="igo-input-container">
     <mat-form-field>
       <mat-select
         formControlName="resolution"
diff --git a/packages/geo/src/lib/print/print/print.component.ts b/packages/geo/src/lib/print/print/print.component.ts
index b43274ef1f..e3fc71fccf 100644
--- a/packages/geo/src/lib/print/print/print.component.ts
+++ b/packages/geo/src/lib/print/print/print.component.ts
@@ -115,12 +115,10 @@ export class PrintComponent {
 
       this.printService.defineNbFileToProcess(nbFileToProcess);
 
-      const resolution = +data.resolution;
-
       this.printService
         .downloadMapImage(
           this.map,
-          resolution,
+          data.resolution,
           data.imageFormat,
           data.showProjection,
           data.showScale,
diff --git a/packages/geo/src/lib/print/shared/print.service.ts b/packages/geo/src/lib/print/shared/print.service.ts
index 117f4d5f53..9510bee6fa 100644
--- a/packages/geo/src/lib/print/shared/print.service.ts
+++ b/packages/geo/src/lib/print/shared/print.service.ts
@@ -20,7 +20,7 @@ import { getLayersLegends } from '../../layer/utils/outputLegend';
 
 import { PrintOptions, TextPdfSizeAndMargin } from './print.interface';
 import GeoPdfPlugin from './geopdf';
-import { PrintLegendPosition, PrintPaperFormat } from './print.type';
+import { PrintLegendPosition, PrintPaperFormat, PrintResolution } from './print.type';
 
 declare global {
   interface Navigator {
@@ -79,7 +79,7 @@ export class PrintService {
     const margins = [10, 10, 10, 10];
     const width = dimensions[0] - margins[3] - margins[1];
     const height = dimensions[1] - margins[0] - margins[2];
-    const size = [width, height];
+    const size: [number, number] = [width, height];
     let titleSizes: TextPdfSizeAndMargin;
     let subtitleSizes: TextPdfSizeAndMargin;
 
@@ -610,30 +610,25 @@ export class PrintService {
     doc: jsPDF,
     map: IgoMap,
     resolution: number,
-    size: Array<number>,
+    docSize: [number, number],
     margins: Array<number>,
     legendPostion: PrintLegendPosition
   ) {
 
-    const mapSize = map.ol.getSize();
+    const mapSize = map.ol.getSize() as [number, number];
     const viewResolution = map.ol.getView().getResolution();
-    const extent = map.ol.getView().calculateExtent(mapSize);
-    const widthPixels = Math.round((size[0] * resolution) / 25.4);
-    const heightPixels = Math.round((size[1] * resolution) / 25.4);
+    const dimensionPixels = this.setMapResolution(map, docSize, resolution, viewResolution);
     const status$ = new Subject();
 
     let timeout;
     map.ol.once('rendercomplete', async (event: any) => {
       const mapCanvas = event.target.getViewport().getElementsByTagName('canvas') as HTMLCollectionOf<HTMLCanvasElement>;
       const mapResultCanvas = await this.drawMap(
-        [widthPixels, heightPixels],
+        dimensionPixels,
         mapCanvas
       );
 
-      // Reset original map size
-      map.ol.setSize(mapSize);
-      map.ol.getView().setResolution(viewResolution);
-      this.renderMap(map, mapSize, extent);
+      this.resetOriginalMapSize(map, mapSize, viewResolution);
 
       await this.drawMapControls(map, mapResultCanvas, legendPostion);
 
@@ -669,20 +664,43 @@ export class PrintService {
           status = SubjectStatus.Error;
           this.messageService.error('igo.geo.printForm.corsErrorMessageBody', 'igo.geo.printForm.corsErrorMessageHeader');
         }
-        // Reset original map size
-        map.ol.setSize(mapSize);
-        map.ol.getView().setResolution(viewResolution);
-        this.renderMap(map, mapSize, extent);
+        this.resetOriginalMapSize(map, mapSize, viewResolution);
         status$.next(status);
       },200);
     });
 
+    return status$;
+  }
+
+  private setMapResolution(
+    map: IgoMap,
+    initialSize: [number, number],
+    resolution: number,
+    viewResolution: number
+  ): [number, number] {
+
+    const mapSize = map.ol.getSize();
+    const widthPixels = Math.round((initialSize[0] * resolution) / 25.4);
+    const heightPixels = Math.round((initialSize[1] * resolution) / 25.4);
+
     // Set print size
     const printSize = [widthPixels, heightPixels];
     map.ol.setSize(printSize);
     const scaling = Math.min(widthPixels / mapSize[0], heightPixels / mapSize[1]);
     map.ol.getView().setResolution(viewResolution / scaling);
-    return status$;
+
+    return [widthPixels, heightPixels];
+  }
+
+  private resetOriginalMapSize(
+    map: IgoMap,
+    initialSize: [number, number],
+    viewResolution: number
+  ) {
+    map.ol.setSize(initialSize);
+    map.ol.getView().setResolution(viewResolution);
+    map.ol.updateSize();
+    map.ol.renderSync();
   }
 
   private async drawMap(
@@ -832,7 +850,7 @@ export class PrintService {
    */
   downloadMapImage(
     map: IgoMap,
-    resolution: number,
+    printResolution: PrintResolution,
     format = 'png',
     projection = false,
     scale = false,
@@ -843,15 +861,20 @@ export class PrintService {
     legendPosition: PrintLegendPosition
   ) {
     const status$ = new Subject();
-    // const resolution = map.ol.getView().getResolution();
     this.activityId = this.activityService.register();
     const translate = this.languageService.translate;
     format = format.toLowerCase();
+    const resolution = +printResolution;
+    const initialMapSize = map.ol.getSize() as [number, number];
+    const viewResolution = map.ol.getView().getResolution();
 
     map.ol.once('rendercomplete', async (event: any) => {
       const size = map.ol.getSize();
       const mapCanvas = event.target.getViewport().getElementsByTagName('canvas') as HTMLCollectionOf<HTMLCanvasElement>;
       const mapResultCanvas = await this.drawMap(size, mapCanvas);
+
+      this.resetOriginalMapSize(map, initialMapSize, viewResolution);
+
       await this.drawMapControls(map, mapResultCanvas, legendPosition);
       // Check the legendPosition
      if (legendPosition !== 'none') {
@@ -1032,10 +1055,30 @@ export class PrintService {
         }
       }
     });
-    map.ol.renderSync();
+
+    this.setMapImageResolution(map, initialMapSize, resolution, viewResolution);
+
     return status$;
   }
 
+  private setMapImageResolution(
+    map: IgoMap,
+    initialMapSize: [number, number],
+    resolution: number,
+    viewResolution: number
+  ): void {
+    const scaleFactor = resolution / 96;
+    const newMapSize = [
+      Math.round(initialMapSize[0] * scaleFactor), // width
+      Math.round(initialMapSize[1] * scaleFactor) // height
+    ];
+    map.ol.setSize(newMapSize);
+    const scaling = Math.min(newMapSize[0] / initialMapSize[0], newMapSize[1] / initialMapSize[1]);
+    const view = map.ol.getView();
+    view.setResolution(viewResolution / scaling);
+    map.ol.renderSync();
+  }
+
   /**
    * Create and Add Legend to the map canvas
    * @param  canvas Canvas of the map