1 files changed, 119 insertions, 0 deletions
diff --git a/src/com/android/settings/widget/ChartView.java b/src/com/android/settings/widget/ChartView.java
new file mode 100644
index 0000000..a5b8b09
--- /dev/null
+++ b/src/com/android/settings/widget/ChartView.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2011 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.settings.widget;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import android.content.Context;
+import android.graphics.Rect;
+import android.util.AttributeSet;
+import android.view.Gravity;
+import android.view.View;
+import android.widget.FrameLayout;
+
+/**
+ * Container for two-dimensional chart, drawn with a combination of
+ * {@link ChartGridView}, {@link ChartNetworkSeriesView} and {@link ChartSweepView}
+ * children. The entire chart uses {@link ChartAxis} to map between raw values
+ * and screen coordinates.
+ */
+public class ChartView extends FrameLayout {
+    private static final String TAG = "ChartView";
+
+    // TODO: extend something that supports two-dimensional scrolling
+
+    private static final int SWEEP_GRAVITY = Gravity.TOP | Gravity.LEFT;
+
+    ChartAxis mHoriz;
+    ChartAxis mVert;
+
+    private Rect mContent = new Rect();
+
+    public ChartView(Context context) {
+        this(context, null, 0);
+    }
+
+    public ChartView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public ChartView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        setClipToPadding(false);
+        setClipChildren(false);
+    }
+
+    void init(ChartAxis horiz, ChartAxis vert) {
+        mHoriz = checkNotNull(horiz, "missing horiz");
+        mVert = checkNotNull(vert, "missing vert");
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        mContent.set(getPaddingLeft(), getPaddingTop(), r - l - getPaddingRight(),
+                b - t - getPaddingBottom());
+        final int width = mContent.width();
+        final int height = mContent.height();
+
+        // no scrolling yet, so tell dimensions to fill exactly
+        mHoriz.setSize(width);
+        mVert.setSize(height);
+
+        final Rect parentRect = new Rect();
+        final Rect childRect = new Rect();
+
+        for (int i = 0; i < getChildCount(); i++) {
+            final View child = getChildAt(i);
+            final LayoutParams params = (LayoutParams) child.getLayoutParams();
+
+            parentRect.set(mContent);
+
+            if (child instanceof ChartNetworkSeriesView || child instanceof ChartGridView) {
+                // series are always laid out to fill entire graph area
+                // TODO: handle scrolling for series larger than content area
+                Gravity.apply(params.gravity, width, height, parentRect, childRect);
+                child.layout(childRect.left, childRect.top, childRect.right, childRect.bottom);
+
+            } else if (child instanceof ChartSweepView) {
+                // sweep is always placed along specific dimension
+                final ChartSweepView sweep = (ChartSweepView) child;
+                final Rect sweepMargins = sweep.getMargins();
+
+                if (sweep.getFollowAxis() == ChartSweepView.VERTICAL) {
+                    parentRect.top += sweepMargins.top + (int) sweep.getPoint();
+                    parentRect.bottom = parentRect.top;
+                    parentRect.left += sweepMargins.left;
+                    parentRect.right += sweepMargins.right;
+                    Gravity.apply(SWEEP_GRAVITY, parentRect.width(), child.getMeasuredHeight(),
+                            parentRect, childRect);
+
+                } else {
+                    parentRect.left += sweepMargins.left + (int) sweep.getPoint();
+                    parentRect.right = parentRect.left;
+                    parentRect.top += sweepMargins.top;
+                    parentRect.bottom += sweepMargins.bottom;
+                    Gravity.apply(SWEEP_GRAVITY, child.getMeasuredWidth(), parentRect.height(),
+                            parentRect, childRect);
+                }
+            }
+
+            child.layout(childRect.left, childRect.top, childRect.right, childRect.bottom);
+        }
+    }
+
+}