完善详情界面

src/com/hippo/ehviewer/util/ViewUtils.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2014 Hippo Seven
+ *
+ * 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.hippo.ehviewer.util;
+
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewParent;
+
+public final class ViewUtils {
+
+    /**
+     * Get view center location in window
+     *
+     * @param view
+     * @param location
+     */
+    public static void getCenterInWindows(View view, int[] location) {
+        getLocationInWindow(view, location);
+        location[0] += view.getWidth() / 2;
+        location[1] += view.getHeight() / 2;
+    }
+
+    /**
+     * Get view location in window
+     *
+     * @param view
+     * @param location
+     */
+    public static void getLocationInWindow(View view, int[] location) {
+        if (location == null || location.length < 2) {
+            throw new IllegalArgumentException("location must be an array of two integers");
+        }
+
+        float[] position = new float[2];
+
+        position[0] = view.getLeft();
+        position[1] = view.getTop();
+
+        ViewParent viewParent = view.getParent();
+        while (viewParent instanceof View) {
+            view = (View)viewParent;
+            if (view.getId() == android.R.id.content) {
+                break;
+            }
+
+            position[0] -= view.getScrollX();
+            position[1] -= view.getScrollY();
+
+            position[0] += view.getLeft();
+            position[1] += view.getTop();
+
+            viewParent = view.getParent();
+         }
+
+        location[0] = (int) (position[0] + 0.5f);
+        location[1] = (int) (position[1] + 0.5f);
+    }
+
+    /**
+     * Returns a bitmap showing a screenshot of the view passed in.
+     * @param v
+     * @return
+     */
+    public static Bitmap getBitmapFromView(View v) {
+        Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        // TODO I need to know why I need it, when ScrollView
+        canvas.translate(-v.getScrollX(), -v.getScrollY());
+        v.draw(canvas);
+        return bitmap;
+    }
+
+    public static boolean isClickAction(MotionEvent event) {
+        // TODO bad idea to check click
+        return event.getAction() == MotionEvent.ACTION_UP &&
+                System.nanoTime() / 1000000 - event.getDownTime() < 200;
+    }
+}