Adding image centering logic into the background image updater, also …

…making phone desktop images wider so the sliding animation to all app works better.
diogorolo · Jan 19, 2016 · e667720 · e667720
1 parent 2d6bc0d
commit e667720
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Showing 2 changed files with 23 additions and 9 deletions.
diff --git a/BaconBackend/Managers/Background/BackgroundImageUpdater.cs b/BaconBackend/Managers/Background/BackgroundImageUpdater.cs
@@ -567,6 +567,12 @@ public async void OnRequestComplete(object sender, ImageManager.ImageManagerResp
                             targetImageSize = new Size(310, 128);
                         }
                     }
+                    else if(type == UpdateTypes.Desktop && DeviceHelper.CurrentDevice() == DeviceTypes.Mobile)
+                    {
+                        // If we are desktop on mobile we want to do a bit larger than the screen res because
+                        // there is a sliding image animation when you switch to all apps. Lets make the width 30% larger.
+                        targetImageSize.Width *= 1.3;
+                    }
 
                     // Resize the image to fit nicely
                     InMemoryRandomAccessStream image = await ResizeImage(response.ImageStream, targetImageSize);
@@ -678,16 +684,19 @@ private async Task<InMemoryRandomAccessStream> ResizeImage(InMemoryRandomAccessS
 
             uint outputHeight = imageHeight;
             uint outputWidth = imageWidth;
+            bool centerOnX = false;
 
             if (widthRatio < heightRatio)
             {
                 outputHeight = (uint)(imageHeight / widthRatio);
                 outputWidth = (uint)requiredSize.Width;
+                centerOnX = false;
             }
             else
             {
                 outputWidth = (uint)(imageWidth / heightRatio);
                 outputHeight = (uint)requiredSize.Height;
+                centerOnX = true;
             }
 
             // Make an output stream and an encoder
@@ -700,6 +709,20 @@ private async Task<InMemoryRandomAccessStream> ResizeImage(InMemoryRandomAccessS
             BitmapBounds bound = new BitmapBounds();
             bound.Height = (uint)requiredSize.Height;
             bound.Width = (uint)requiredSize.Width;
+
+            // Choose Fant for quality over perf.
+            enc.BitmapTransform.InterpolationMode = BitmapInterpolationMode.Fant;
+
+            if(centerOnX)
+            {
+                int width = ((int)outputWidth / 2) - ((int)bound.Width / 2);
+                bound.X = (uint)(width > 0 ? width : 0);
+            }
+            else
+            {
+                int height = ((int)outputHeight / 2) - ((int)bound.Height / 2);
+                bound.Y = (uint)(height > 0 ? height : 0);
+            }
             enc.BitmapTransform.Bounds = bound;
 
             // Do it

diff --git a/Baconit/ContentPanels/Panels/BasicImageContentPanel.xaml.cs b/Baconit/ContentPanels/Panels/BasicImageContentPanel.xaml.cs
@@ -1,24 +1,15 @@
 using BaconBackend.Managers;
 using Baconit.Interfaces;
 using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.InteropServices.WindowsRuntime;
 using System.Threading.Tasks;
 using Windows.Foundation;
-using Windows.Foundation.Collections;
 using Windows.Graphics.Display;
 using Windows.Storage.Streams;
 using Windows.UI.Core;
 using Windows.UI.Xaml;
 using Windows.UI.Xaml.Controls;
-using Windows.UI.Xaml.Controls.Primitives;
-using Windows.UI.Xaml.Data;
 using Windows.UI.Xaml.Input;
-using Windows.UI.Xaml.Media;
 using Windows.UI.Xaml.Media.Imaging;
-using Windows.UI.Xaml.Navigation;
 
 namespace Baconit.ContentPanels.Panels
 {