Trebuchet: Index folder contents screen and cells on first load

Issue-id: CYNGNOS-2755

Change-Id: I260d1b098e7759a0134bc40f892b8783452c9528

1 files changed, 34 insertions, 0 deletions

diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index bf11aa19e..8ffc471a3 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -39,6 +39,7 @@ import android.graphics.Color;
 import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
@@ -706,6 +707,39 @@ public final class Utilities {
                 size, metrics));
     }
 
+    public static Point caluclateFolderContentDimensions(int count, int maxCountX, int maxCountY) {
+        final Point point = new Point();
+        final int maxItemsPerPage = maxCountX * maxCountY;
+        boolean done;
+        if (count >= maxItemsPerPage) {
+            point.x = maxCountX;
+            point.y = maxCountY;
+            done = true;
+        } else {
+            done = false;
+        }
+
+        while (!done) {
+            int oldCountX = point.x;
+            int oldCountY = point.y;
+            if (point.x * point.y < count) {
+                // Current grid is too small, expand it
+                if ((point.x <= point.y || point.y == maxCountY) && point.x < maxCountX) {
+                    point.x++;
+                } else if (point.y < maxCountY) {
+                    point.y++;
+                }
+                if (point.y == 0) point.y++;
+            } else if ((point.y - 1) * point.x >= count && point.y >= point.x) {
+                point.y = Math.max(0, point.y - 1);
+            } else if ((point.x - 1) * point.y >= count) {
+                point.x = Math.max(0, point.x - 1);
+            }
+            done = point.x == oldCountX && point.y == oldCountY;
+        }
+        return point;
+    }
+
     public static String createDbSelectionQuery(String columnName, Iterable<?> values) {
         return String.format(Locale.ENGLISH, "%s IN (%s)", columnName, TextUtils.join(", ", values));
     }