The Tor Browser / file comparison
comparison: mobile/android/base/gfx/TextLayer.java
mobile/android/base/gfx/TextLayer.java
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:31254fbf2399 |
|---|---|
| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.gfx; | |
| 7 | |
| 8 import org.mozilla.gecko.mozglue.DirectBufferAllocator; | |
| 9 | |
| 10 import android.graphics.Bitmap; | |
| 11 import android.graphics.Canvas; | |
| 12 import android.graphics.Color; | |
| 13 import android.graphics.Paint; | |
| 14 import android.graphics.Typeface; | |
| 15 | |
| 16 import java.nio.ByteBuffer; | |
| 17 | |
| 18 /** | |
| 19 * Draws text on a layer. This is used for the frame rate meter. | |
| 20 */ | |
| 21 public class TextLayer extends SingleTileLayer { | |
| 22 private final ByteBuffer mBuffer; // this buffer is owned by the BufferedCairoImage | |
| 23 private final IntSize mSize; | |
| 24 | |
| 25 /* | |
| 26 * This awkward pattern is necessary due to Java's restrictions on when one can call superclass | |
| 27 * constructors. | |
| 28 */ | |
| 29 private TextLayer(ByteBuffer buffer, BufferedCairoImage image, IntSize size, String text) { | |
| 30 super(false, image); | |
| 31 mBuffer = buffer; | |
| 32 mSize = size; | |
| 33 renderText(text); | |
| 34 } | |
| 35 | |
| 36 public static TextLayer create(IntSize size, String text) { | |
| 37 ByteBuffer buffer = DirectBufferAllocator.allocate(size.width * size.height * 4); | |
| 38 BufferedCairoImage image = new BufferedCairoImage(buffer, size.width, size.height, | |
| 39 CairoImage.FORMAT_ARGB32); | |
| 40 return new TextLayer(buffer, image, size, text); | |
| 41 } | |
| 42 | |
| 43 public void setText(String text) { | |
| 44 renderText(text); | |
| 45 invalidate(); | |
| 46 } | |
| 47 | |
| 48 private void renderText(String text) { | |
| 49 Bitmap bitmap = Bitmap.createBitmap(mSize.width, mSize.height, Bitmap.Config.ARGB_8888); | |
| 50 Canvas canvas = new Canvas(bitmap); | |
| 51 | |
| 52 Paint textPaint = new Paint(); | |
| 53 textPaint.setAntiAlias(true); | |
| 54 textPaint.setColor(Color.WHITE); | |
| 55 textPaint.setFakeBoldText(true); | |
| 56 textPaint.setTextSize(18.0f); | |
| 57 textPaint.setTypeface(Typeface.DEFAULT_BOLD); | |
| 58 float width = textPaint.measureText(text) + 18.0f; | |
| 59 | |
| 60 Paint backgroundPaint = new Paint(); | |
| 61 backgroundPaint.setColor(Color.argb(127, 0, 0, 0)); | |
| 62 canvas.drawRect(0.0f, 0.0f, width, 18.0f + 6.0f, backgroundPaint); | |
| 63 | |
| 64 canvas.drawText(text, 6.0f, 18.0f, textPaint); | |
| 65 | |
| 66 bitmap.copyPixelsToBuffer(mBuffer.asIntBuffer()); | |
| 67 } | |
| 68 } | |
| 69 |
