1 files changed, 47 insertions, 0 deletions
diff --git a/main/src/cgeo/geocaching/utils/ImageHelper.java b/main/src/cgeo/geocaching/utils/ImageHelper.java
new file mode 100644
index 0000000..4c18b06
--- /dev/null
+++ b/main/src/cgeo/geocaching/utils/ImageHelper.java
@@ -0,0 +1,47 @@
+package cgeo.geocaching.utils;
+
+import cgeo.geocaching.cgeoapplication;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Rect;
+import android.graphics.drawable.BitmapDrawable;
+import android.view.Display;
+import android.view.WindowManager;
+
+public class ImageHelper {
+
+    // Do not let this class be instantiated, this is a utility class.
+    private ImageHelper() {
+    }
+
+    /**
+     * Scales a bitmap to the given bounds
+     *
+     * @param image
+     *            The bitmap to scale
+     * @return BitmapDrawable The scaled image
+     */
+    public static BitmapDrawable scaleBitmapToFitDisplay(final Bitmap image) {
+        final cgeoapplication app = cgeoapplication.getInstance();
+        final Display display = ((WindowManager) app.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
+        final int maxWidth = display.getWidth() - 25;
+        final int maxHeight = display.getHeight() - 25;
+
+        Bitmap result = image;
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        if (width > maxWidth || height > maxHeight) {
+            final double ratio = Math.min((double) maxHeight / (double) height, (double) maxWidth / (double) width);
+            width = (int) Math.ceil(width * ratio);
+            height = (int) Math.ceil(height * ratio);
+            result = Bitmap.createScaledBitmap(image, width, height, true);
+        }
+
+        final BitmapDrawable resultDrawable = new BitmapDrawable(app.getResources(), result);
+        resultDrawable.setBounds(new Rect(0, 0, width, height));
+        return resultDrawable;
+    }
+
+}