1 files changed, 75 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/display/DisplayViewport.java b/services/core/java/com/android/server/display/DisplayViewport.java
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+++ b/services/core/java/com/android/server/display/DisplayViewport.java
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+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.display;
+
+import android.graphics.Rect;
+
+/**
+ * Describes how the pixels of physical display device reflects the content of
+ * a logical display.
+ * <p>
+ * This information is used by the input system to translate touch input from
+ * physical display coordinates into logical display coordinates.
+ * </p>
+ */
+public final class DisplayViewport {
+    // True if this viewport is valid.
+    public boolean valid;
+
+    // The logical display id.
+    public int displayId;
+
+    // The rotation applied to the physical coordinate system.
+    public int orientation;
+
+    // The portion of the logical display that are presented on this physical display.
+    public final Rect logicalFrame = new Rect();
+
+    // The portion of the (rotated) physical display that shows the logical display contents.
+    // The relation between logical and physical frame defines how the coordinate system
+    // should be scaled or translated after rotation.
+    public final Rect physicalFrame = new Rect();
+
+    // The full width and height of the display device, rotated in the same
+    // manner as physicalFrame.  This expresses the full native size of the display device.
+    // The physical frame should usually fit within this area.
+    public int deviceWidth;
+    public int deviceHeight;
+
+    public void copyFrom(DisplayViewport viewport) {
+        valid = viewport.valid;
+        displayId = viewport.displayId;
+        orientation = viewport.orientation;
+        logicalFrame.set(viewport.logicalFrame);
+        physicalFrame.set(viewport.physicalFrame);
+        deviceWidth = viewport.deviceWidth;
+        deviceHeight = viewport.deviceHeight;
+    }
+
+    // For debugging purposes.
+    @Override
+    public String toString() {
+        return "DisplayViewport{valid=" + valid
+                + ", displayId=" + displayId
+                + ", orientation=" + orientation
+                + ", logicalFrame=" + logicalFrame
+                + ", physicalFrame=" + physicalFrame
+                + ", deviceWidth=" + deviceWidth
+                + ", deviceHeight=" + deviceHeight
+                + "}";
+    }
+}