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0ccb63558f
The video rendering was re-written to use writableImages and is displaying (something) but keyboard input and configurations are broken so nothing much happens after the inital boot. Basically the underlying part to make this show up in JavaFX is starting to take shape.
63 lines
2.3 KiB
Java
63 lines
2.3 KiB
Java
/*
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* Copyright (C) 2012 Brendan Robert (BLuRry) brendan.robert@gmail.com.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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package jace.core;
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import javafx.scene.image.WritableImage;
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/**
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* VideoWriter is an abstraction of a graphics display mode that knows how to
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* render a scanline a certain way (lo-res, hi-res, text, etc) over a specific
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* range of memory (as determined by getYOffset.) Dirty flags are used to mark
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* scanlines that were altered and require redraw. This is the key to only
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* updating the screen as needed instead of drawing all the time at the expense
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* of CPU.
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*
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* @author Brendan Robert (BLuRry) brendan.robert@gmail.com
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*/
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public abstract class VideoWriter {
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public abstract void displayByte(WritableImage screen, int xOffset, int y, int yTextOffset, int yGraphicsOffset);
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// This is used to support composite mixed-mode writers so that we can talk to the writer being used for a scanline
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public VideoWriter actualWriter() {
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return this;
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}
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public abstract int getYOffset(int y);
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// Dirty flags allow us to know if a scanline has or has not changed
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// Very useful for knowing if we should bother drawing changes
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private final boolean[] dirtyFlags = new boolean[192];
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public void markDirty(int y) {
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actualWriter().dirtyFlags[y] = true;
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}
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public void clearDirty(int y) {
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actualWriter().dirtyFlags[y] = false;
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}
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public boolean isRowDirty(int y) {
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return actualWriter().dirtyFlags[y];
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}
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public boolean isMixed() {
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return false;
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}
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}
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