From 690481663272ee4cce5dd7670edfe7b0b33a5f85 Mon Sep 17 00:00:00 2001
From: Arne Coucheron <arco68@gmail.com>
Date: Mon, 14 Aug 2017 17:02:03 +0200
Subject: Snap: Fix panorama layout

Loosely based on old cyngn patches.

Change-Id: I7fdb6ba82243f2f28e8ea655f83f0339d49de5ad
---
 res/layout/pano_module_capture.xml                 |  2 +-
 .../android/camera/WideAnglePanoramaModule.java    |  1 +
 src/com/android/camera/WideAnglePanoramaUI.java    | 45 ++++++++++++++++++----
 src/com/android/camera/ui/CameraControls.java      |  2 +-
 4 files changed, 40 insertions(+), 10 deletions(-)

diff --git a/res/layout/pano_module_capture.xml b/res/layout/pano_module_capture.xml
index 4e841878b..c6ea2b22a 100644
--- a/res/layout/pano_module_capture.xml
+++ b/res/layout/pano_module_capture.xml
@@ -24,7 +24,7 @@
         android:id="@+id/pano_preview_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_gravity="center" >
+        android:layout_gravity="center_vertical|center_horizontal" >
 
         <TextureView
             android:id="@+id/pano_preview_textureview"
diff --git a/src/com/android/camera/WideAnglePanoramaModule.java b/src/com/android/camera/WideAnglePanoramaModule.java
index c257661ca..0e7d0805d 100644
--- a/src/com/android/camera/WideAnglePanoramaModule.java
+++ b/src/com/android/camera/WideAnglePanoramaModule.java
@@ -458,6 +458,7 @@ public class WideAnglePanoramaModule
         Log.d(TAG, "camera preview h = "
                     + mCameraPreviewHeight + " , w = " + mCameraPreviewWidth);
         parameters.setPreviewSize(mCameraPreviewWidth, mCameraPreviewHeight);
+        mUI.setPreviewSize(mCameraPreviewWidth, mCameraPreviewHeight);
 
         List<int[]> frameRates = parameters.getSupportedPreviewFpsRange();
         int last = frameRates.size() - 1;
diff --git a/src/com/android/camera/WideAnglePanoramaUI.java b/src/com/android/camera/WideAnglePanoramaUI.java
index 99b08b9b5..f3b30db1c 100644
--- a/src/com/android/camera/WideAnglePanoramaUI.java
+++ b/src/com/android/camera/WideAnglePanoramaUI.java
@@ -108,6 +108,10 @@ public class WideAnglePanoramaUI implements
     private RotateLayout mPanoFailedDialog;
     private Button mPanoFailedButton;
 
+    private int mTopMargin = 0;
+    private int mBottomMargin = 0;
+    private float mAspectRatio = 1.0f;
+
     /** Constructor. */
     public WideAnglePanoramaUI(
             CameraActivity activity,
@@ -144,6 +148,14 @@ public class WideAnglePanoramaUI implements
         muteButton.setVisibility(View.GONE);
     }
 
+    private void calculateMargins(Point size) {
+        int l = size.x > size.y ? size.x : size.y;
+        int tm = mActivity.getResources().getDimensionPixelSize(R.dimen.preview_top_margin);
+        int bm = mActivity.getResources().getDimensionPixelSize(R.dimen.preview_bottom_margin);
+        mTopMargin = l / 4 * tm / (tm + bm);
+        mBottomMargin = l / 4 - mTopMargin;
+    }
+
     public void onStartCapture() {
         hideSwitcher();
         mShutterButton.setImageResource(R.drawable.shutter_button_stop);
@@ -363,16 +375,19 @@ public class WideAnglePanoramaUI implements
         Display display = mActivity.getWindowManager().getDefaultDisplay();
         Point size = new Point();
         display.getSize(size);
+        mActivity.getWindowManager().getDefaultDisplay().getRealSize(size);
+        calculateMargins(size);
+        mCameraControls.setMargins(mTopMargin, mBottomMargin);
 
         int width = size.x;
-        int height = size.y;
+        int height = size.y - mTopMargin - mBottomMargin;
         int xOffset = 0;
         int yOffset = 0;
         int w = width;
         int h = height;
 
         h = w * 4 / 3;
-        yOffset = (height - h) / 2;
+        yOffset = (height - h) / 2 + mTopMargin;
 
         FrameLayout.LayoutParams param = new FrameLayout.LayoutParams(w, h);
         mTextureView.setLayoutParams(param);
@@ -383,12 +398,7 @@ public class WideAnglePanoramaUI implements
         mPreviewBorder.setY(yOffset);
         mPreviewYOffset = yOffset;
 
-        int t = mPreviewYOffset;
-        int b1 = mTextureView.getBottom() - mPreviewYOffset;
-        int r = mTextureView.getRight();
-        int b2 = mTextureView.getBottom();
-
-        mCameraControls.setPreviewRatio(1.0f, true);
+        mTextureView.layout(0, mPreviewYOffset, mTextureView.getRight(), mTextureView.getBottom());
     }
 
     public void resetSavingProgress() {
@@ -711,4 +721,23 @@ public class WideAnglePanoramaUI implements
             mPreviewCover.setVisibility(View.GONE);
         }
     }
+
+    public void setPreviewSize(int width, int height) {
+        if (width == 0 || height == 0) {
+            Log.w(TAG, "Preview size should not be 0.");
+            return;
+        }
+        float ratio;
+        if (width > height) {
+            ratio = (float) width / height;
+        } else {
+            ratio = (float) height / width;
+        }
+
+        if (ratio != mAspectRatio) {
+            mAspectRatio = ratio;
+        }
+
+        mCameraControls.setPreviewRatio(mAspectRatio, false);
+    }
 }
diff --git a/src/com/android/camera/ui/CameraControls.java b/src/com/android/camera/ui/CameraControls.java
index db93c0edb..54355078c 100755
--- a/src/com/android/camera/ui/CameraControls.java
+++ b/src/com/android/camera/ui/CameraControls.java
@@ -1066,7 +1066,7 @@ public class CameraControls extends RotatableLayout {
                 mPaint.setColor(getResources().getColor(R.color.camera_control_bg_transparent));
             }
         }
-        invalidate();
+        requestLayout();
     }
 
     public void showRefocusToast(boolean show) {
-- 
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