From 34cdc7903c5171abd387a14238c9886a5e078e47 Mon Sep 17 00:00:00 2001
From: d-kunin <mr.kunin@gmail.com>
Date: Fri, 9 Aug 2013 00:47:48 +0300
Subject: [PATCH] [and] Pinch to scale for pictures.

---
 .../travelguide/ArticleInfoDetailFragment.java       | 12 ++++++++++++
 android/src/com/example/travelguide/util/Utils.java  | 11 +++++++++++
 .../com/example/travelguide/webkit/TgWebView.java    |  5 +++--
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/android/src/com/example/travelguide/ArticleInfoDetailFragment.java b/android/src/com/example/travelguide/ArticleInfoDetailFragment.java
index 8c1ec9e..ae86b04 100644
--- a/android/src/com/example/travelguide/ArticleInfoDetailFragment.java
+++ b/android/src/com/example/travelguide/ArticleInfoDetailFragment.java
@@ -9,6 +9,8 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
+import android.webkit.WebSettings;
+import android.webkit.WebSettings.LayoutAlgorithm;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.TextView;
@@ -105,6 +107,16 @@ public class ArticleInfoDetailFragment extends Fragment implements OnClickListen
       super.onPageFinished(view, url);
       Utils.fadeOut(getActivity(), mProgressContainer);
       Utils.fadeIn(getActivity(), mWebView);
+
+      // If picture enable zoom, else disable
+      final WebSettings ws = mWebView.getSettings();
+
+      final boolean isPicture = Utils.isPictUrl(url);
+      ws.setBuiltInZoomControls(isPicture);
+      ws.setSupportZoom(isPicture);
+      ws.setLoadWithOverviewMode(isPicture);
+      ws.setLayoutAlgorithm(isPicture ? LayoutAlgorithm.SINGLE_COLUMN : LayoutAlgorithm.NARROW_COLUMNS);
+      ws.setUseWideViewPort(isPicture);
     }
 
     @Override
diff --git a/android/src/com/example/travelguide/util/Utils.java b/android/src/com/example/travelguide/util/Utils.java
index 893611c..6c1f5cd 100644
--- a/android/src/com/example/travelguide/util/Utils.java
+++ b/android/src/com/example/travelguide/util/Utils.java
@@ -3,6 +3,7 @@ package com.example.travelguide.util;
 import java.io.File;
 
 import android.content.Context;
+import android.os.Build;
 import android.view.View;
 import android.view.animation.Animation;
 import android.view.animation.Animation.AnimationListener;
@@ -90,4 +91,14 @@ public class Utils
     target.startAnimation(anim);
   }
 
+  public static boolean isPictUrl(String url)
+  {
+    return url.endsWith(".png") || url.endsWith(".jpg") || url.endsWith(".jpeg") || url.endsWith(".svg");
+  }
+
+  public static boolean isApiLevelAbove(int version)
+  {
+    return Build.VERSION.SDK_INT > version;
+  }
+
 }
diff --git a/android/src/com/example/travelguide/webkit/TgWebView.java b/android/src/com/example/travelguide/webkit/TgWebView.java
index 6d9b39b..838d370 100644
--- a/android/src/com/example/travelguide/webkit/TgWebView.java
+++ b/android/src/com/example/travelguide/webkit/TgWebView.java
@@ -10,7 +10,7 @@ import android.webkit.WebView;
 
 import com.example.travelguide.util.Utils;
 
-@SuppressLint("SetJavaScriptEnabled")
+@SuppressLint({ "SetJavaScriptEnabled", "NewApi" })
 public class TgWebView extends WebView
 {
 
@@ -19,7 +19,8 @@ public class TgWebView extends WebView
     super(context, attrs, defStyle);
     final WebSettings settings = getSettings();
     settings.setJavaScriptEnabled(true);
-
+    if (Utils.isApiLevelAbove(10))
+      settings.setDisplayZoomControls(false);
   }
 
   public TgWebView(Context context, AttributeSet attrs)