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59 lines
2.1 KiB
Java
59 lines
2.1 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko.gfx;
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import android.graphics.RectF;
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import org.mozilla.gecko.FloatUtils;
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/*
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* This class keeps track of the area we request Gecko to paint, as well
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* as the resolution of the paint. The area may be different from the visible
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* area of the page, and the resolution may be different from the resolution
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* used in the compositor to render the page. This is so that we can ask Gecko
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* to paint a much larger area without using extra memory, and then render some
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* subsection of that with compositor scaling.
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*/
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public final class DisplayPortMetrics {
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private final RectF mPosition;
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private final float mResolution;
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public DisplayPortMetrics() {
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this(0, 0, 0, 0, 1);
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}
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public DisplayPortMetrics(float left, float top, float right, float bottom, float resolution) {
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mPosition = new RectF(left, top, right, bottom);
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mResolution = resolution;
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}
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public boolean contains(RectF rect) {
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return mPosition.contains(rect);
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}
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public boolean fuzzyEquals(DisplayPortMetrics metrics) {
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return RectUtils.fuzzyEquals(mPosition, metrics.mPosition)
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&& FloatUtils.fuzzyEquals(mResolution, metrics.mResolution);
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}
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public String toJSON() {
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StringBuffer sb = new StringBuffer(256);
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sb.append("{ \"left\": ").append(mPosition.left)
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.append(", \"top\": ").append(mPosition.top)
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.append(", \"right\": ").append(mPosition.right)
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.append(", \"bottom\": ").append(mPosition.bottom)
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.append(", \"resolution\": ").append(mResolution)
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.append('}');
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return sb.toString();
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}
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@Override
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public String toString() {
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return "DisplayPortMetrics v=(" + mPosition.left + ","
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+ mPosition.top + "," + mPosition.right + ","
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+ mPosition.bottom + ") z=" + mResolution;
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}
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}
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