Pcbnew, pdf plotter: fixes and enhancements.

* To select a footprint info, Use the bbox with not text as selectable area
* Fix also incorrect position of footprint bbox when plotting with offset

Fixes https://gitlab.com/kicad/code/kicad/-/issues/17355

include/plotters/plotter.h

@@ -543,6 +543,12 @@ public:
      */
     virtual void EndBlock( void* aData ) {}
 
+    /**
+     * @return the plot offset in IUs, set by SetViewport() and used
+     * to plot items.
+     */
+    VECTOR2I GetPlotOffsetUserUnits() {return m_plotOffset; }
+
 
 protected:
     /**
@@ -631,6 +637,7 @@ protected:
 
     double GetDashGapLenIU( int aLineWidth ) const;
 
+
 protected:      // variables used in most of plotters:
     /// Plot scale - chosen by the user (even implicitly with 'fit in a4')
     double           m_plotScale;

pcbnew/plot_board_layers.cpp

@@ -118,9 +118,22 @@ void PlotInteractiveLayer( BOARD* aBoard, PLOTTER* aPlotter, const PCB_PLOT_PARA
                                                    _( "Keywords" ),
                                                    fp->GetKeywords() ) );
 #endif
-        aPlotter->HyperlinkMenu( fp->GetBoundingBox(), properties );
-
-        aPlotter->Bookmark( fp->GetBoundingBox(), fp->GetReference(), _( "Footprints" ) );
+        // Draw items are plotted with a position offset. So we need to move
+        // our boxes (which are not plotted) by the same offset.
+        VECTOR2I offset = -aPlotter->GetPlotOffsetUserUnits();
+
+        // Use a footprint bbox without texts to create the hyperlink area
+        BOX2I bbox = fp->GetBoundingBox( false, false );
+        bbox.Move( offset );
+        aPlotter->HyperlinkMenu( bbox, properties );
+
+        // Use a footprint bbox with visible texts only to create the bookmark area
+        // which is the area to zoom on ft selection
+        // However the bbox need to be inflated for a better look.
+        bbox = fp->GetBoundingBox( true, false );
+        bbox.Move( offset );
+        bbox.Inflate( bbox.GetWidth() /2, bbox.GetHeight() /2 );
+        aPlotter->Bookmark( bbox, fp->GetReference(), _( "Footprints" ) );
     }
 }