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https://gitlab.winehq.org/wine/wine-gecko.git
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970a0497a7
This removes the hard-coded limit of 1024x2048 tile sizes, and allows for arbitrary tile-sizes. It will still only allocate texture sizes in powers of two, however. It replaces the tile size with a buffered-area size, which can be re-allocated as the screen dimensions change.
227 lines
9.2 KiB
Java
227 lines
9.2 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Kartikaya Gupta <kgupta@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Color;
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import android.graphics.Paint;
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import android.graphics.PointF;
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import android.graphics.PorterDuff;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.opengl.GLES11;
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import android.opengl.GLES11Ext;
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import android.util.Log;
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import java.nio.ByteBuffer;
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import javax.microedition.khronos.opengles.GL10;
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import org.mozilla.gecko.FloatUtils;
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import org.mozilla.gecko.GeckoAppShell;
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/**
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* Draws a small rect. This is scaled to become a scrollbar.
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*/
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public class ScrollbarLayer extends TileLayer {
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public static final long FADE_DELAY = 500; // milliseconds before fade-out starts
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private static final float FADE_AMOUNT = 0.03f; // how much (as a percent) the scrollbar should fade per frame
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private static final int PADDING = 1; // gap between scrollbar and edge of viewport
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private static final int BAR_SIZE = 6;
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private static final int CAP_RADIUS = (BAR_SIZE / 2);
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private static final int[] CROPRECT_MIDPIXEL = new int[] { CAP_RADIUS, CAP_RADIUS, 1, 1 };
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private static final int[] CROPRECT_TOPCAP = new int[] { 0, CAP_RADIUS, BAR_SIZE, -CAP_RADIUS };
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private static final int[] CROPRECT_BOTTOMCAP = new int[] { 0, BAR_SIZE, BAR_SIZE, -CAP_RADIUS };
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private static final int[] CROPRECT_LEFTCAP = new int[] { 0, BAR_SIZE, CAP_RADIUS, -BAR_SIZE };
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private static final int[] CROPRECT_RIGHTCAP = new int[] { CAP_RADIUS, BAR_SIZE, CAP_RADIUS, -BAR_SIZE };
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private final boolean mVertical;
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private final ByteBuffer mBuffer;
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private final Bitmap mBitmap;
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private final Canvas mCanvas;
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private float mOpacity;
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private boolean mFinalized = false;
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private ScrollbarLayer(CairoImage image, boolean vertical, ByteBuffer buffer) {
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super(false, image);
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mVertical = vertical;
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mBuffer = buffer;
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IntSize size = image.getSize();
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mBitmap = Bitmap.createBitmap(size.width, size.height, Bitmap.Config.ARGB_8888);
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mCanvas = new Canvas(mBitmap);
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}
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protected void finalize() throws Throwable {
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try {
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if (!mFinalized && mBuffer != null)
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GeckoAppShell.freeDirectBuffer(mBuffer);
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mFinalized = true;
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} finally {
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super.finalize();
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}
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}
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public static ScrollbarLayer create(boolean vertical) {
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// just create an empty image for now, it will get drawn
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// on demand anyway
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int imageSize = IntSize.nextPowerOfTwo(BAR_SIZE);
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ByteBuffer buffer = GeckoAppShell.allocateDirectBuffer(imageSize * imageSize * 4);
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CairoImage image = new BufferedCairoImage(buffer, imageSize, imageSize, CairoImage.FORMAT_ARGB32);
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return new ScrollbarLayer(image, vertical, buffer);
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}
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/**
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* Decrease the opacity of the scrollbar by one frame's worth.
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* Return true if the opacity was decreased, or false if the scrollbars
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* are already fully faded out.
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*/
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public boolean fade() {
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if (FloatUtils.fuzzyEquals(mOpacity, 0.0f)) {
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return false;
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}
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beginTransaction();
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try {
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setOpacity(Math.max(mOpacity - FADE_AMOUNT, 0.0f));
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invalidate();
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} finally {
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endTransaction();
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}
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return true;
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}
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/**
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* Restore the opacity of the scrollbar to fully opaque.
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* Return true if the opacity was changed, or false if the scrollbars
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* are already fully opaque.
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*/
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public boolean unfade() {
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if (FloatUtils.fuzzyEquals(mOpacity, 1.0f)) {
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return false;
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}
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beginTransaction();
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try {
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setOpacity(1.0f);
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invalidate();
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} finally {
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endTransaction();
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}
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return true;
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}
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private void setOpacity(float opacity) {
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mOpacity = opacity;
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Paint foregroundPaint = new Paint();
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foregroundPaint.setAntiAlias(true);
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foregroundPaint.setStyle(Paint.Style.FILL);
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// use a (a,r,g,b) color of (127,0,0,0), and multiply the alpha by mOpacity for fading
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foregroundPaint.setColor(Color.argb((int)Math.round(mOpacity * 127), 0, 0, 0));
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mCanvas.drawColor(Color.argb(0, 0, 0, 0), PorterDuff.Mode.CLEAR);
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mCanvas.drawCircle(CAP_RADIUS, CAP_RADIUS, CAP_RADIUS, foregroundPaint);
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mBitmap.copyPixelsToBuffer(mBuffer.asIntBuffer());
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}
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@Override
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public void draw(RenderContext context) {
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if (!initialized())
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return;
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try {
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GLES11.glEnable(GL10.GL_BLEND);
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Rect rect = RectUtils.round(mVertical ? getVerticalRect(context) : getHorizontalRect(context));
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GLES11.glBindTexture(GL10.GL_TEXTURE_2D, getTextureID());
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float viewHeight = context.viewport.height();
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// for the body of the scrollbar, we take a 1x1 pixel from the center of the image
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// and scale it to become the bar
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, CROPRECT_MIDPIXEL, 0);
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GLES11Ext.glDrawTexfOES(rect.left, viewHeight - rect.bottom, 0.0f, rect.width(), rect.height());
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if (mVertical) {
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// top endcap
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, CROPRECT_TOPCAP, 0);
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GLES11Ext.glDrawTexfOES(rect.left, viewHeight - rect.top, 0.0f, BAR_SIZE, CAP_RADIUS);
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// bottom endcap
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, CROPRECT_BOTTOMCAP, 0);
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GLES11Ext.glDrawTexfOES(rect.left, viewHeight - (rect.bottom + CAP_RADIUS), 0.0f, BAR_SIZE, CAP_RADIUS);
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} else {
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// left endcap
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, CROPRECT_LEFTCAP, 0);
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GLES11Ext.glDrawTexfOES(rect.left - CAP_RADIUS, viewHeight - rect.bottom, 0.0f, CAP_RADIUS, BAR_SIZE);
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// right endcap
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GLES11.glTexParameteriv(GL10.GL_TEXTURE_2D, GLES11Ext.GL_TEXTURE_CROP_RECT_OES, CROPRECT_RIGHTCAP, 0);
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GLES11Ext.glDrawTexfOES(rect.right, viewHeight - rect.bottom, 0.0f, CAP_RADIUS, BAR_SIZE);
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}
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} finally {
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GLES11.glDisable(GL10.GL_BLEND);
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}
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}
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private RectF getVerticalRect(RenderContext context) {
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RectF viewport = context.viewport;
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FloatSize pageSize = context.pageSize;
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float barStart = (viewport.height() * viewport.top / pageSize.height) + CAP_RADIUS;
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float barEnd = (viewport.height() * viewport.bottom / pageSize.height) - CAP_RADIUS;
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if (barStart > barEnd) {
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float middle = (barStart + barEnd) / 2.0f;
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barStart = barEnd = middle;
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}
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float right = viewport.width() - PADDING;
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return new RectF(right - BAR_SIZE, barStart, right, barEnd);
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}
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private RectF getHorizontalRect(RenderContext context) {
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RectF viewport = context.viewport;
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FloatSize pageSize = context.pageSize;
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float barStart = (viewport.width() * viewport.left / pageSize.width) + CAP_RADIUS;
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float barEnd = (viewport.width() * viewport.right / pageSize.width) - CAP_RADIUS;
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if (barStart > barEnd) {
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float middle = (barStart + barEnd) / 2.0f;
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barStart = barEnd = middle;
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}
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float bottom = viewport.height() - PADDING;
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return new RectF(barStart, bottom - BAR_SIZE, barEnd, bottom);
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}
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}
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