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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java')
-rw-r--r-- | android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java b/android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java new file mode 100644 index 000000000..023433a88 --- /dev/null +++ b/android/source/src/java/org/mozilla/gecko/gfx/TextLayer.java @@ -0,0 +1,69 @@ +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +package org.mozilla.gecko.gfx; + +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Color; +import android.graphics.Paint; +import android.graphics.Typeface; + +import org.libreoffice.kit.DirectBufferAllocator; + +import java.nio.ByteBuffer; + +/** + * Draws text on a layer. This is used for the frame rate meter. + */ +public class TextLayer extends SingleTileLayer { + private final ByteBuffer mBuffer; // this buffer is owned by the BufferedCairoImage + private final IntSize mSize; + + /* + * This awkward pattern is necessary due to Java's restrictions on when one can call superclass + * constructors. + */ + private TextLayer(ByteBuffer buffer, BufferedCairoImage image, IntSize size, String text) { + super(false, image); + mBuffer = buffer; + mSize = size; + renderText(text); + } + + public static TextLayer create(IntSize size, String text) { + ByteBuffer buffer = DirectBufferAllocator.allocate(size.width * size.height * 4); + BufferedCairoImage image = new BufferedCairoImage(buffer, size.width, size.height, + CairoImage.FORMAT_ARGB32); + return new TextLayer(buffer, image, size, text); + } + + public void setText(String text) { + renderText(text); + invalidate(); + } + + private void renderText(String text) { + Bitmap bitmap = Bitmap.createBitmap(mSize.width, mSize.height, Bitmap.Config.ARGB_8888); + Canvas canvas = new Canvas(bitmap); + + Paint textPaint = new Paint(); + textPaint.setAntiAlias(true); + textPaint.setColor(Color.WHITE); + textPaint.setFakeBoldText(true); + textPaint.setTextSize(18.0f); + textPaint.setTypeface(Typeface.DEFAULT_BOLD); + float width = textPaint.measureText(text) + 18.0f; + + Paint backgroundPaint = new Paint(); + backgroundPaint.setColor(Color.argb(127, 0, 0, 0)); + canvas.drawRect(0.0f, 0.0f, width, 18.0f + 6.0f, backgroundPaint); + + canvas.drawText(text, 6.0f, 18.0f, textPaint); + + bitmap.copyPixelsToBuffer(mBuffer.asIntBuffer()); + } +} + |