Package org.jnode.test.gui

Source Code of org.jnode.test.gui.FBConsole$FBPcTextScreen$FBScreen

/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test.gui;

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.GraphicsEnvironment;
import java.awt.image.BufferedImage;
import java.util.Collection;
import org.apache.log4j.Logger;
import org.jnode.driver.Device;
import org.jnode.driver.DeviceManager;
import org.jnode.driver.DeviceUtils;
import org.jnode.driver.console.ConsoleManager;
import org.jnode.driver.console.textscreen.ScrollableTextScreenConsole;
import org.jnode.driver.console.textscreen.TextScreenConsoleManager;
import org.jnode.driver.textscreen.ScrollableTextScreen;
import org.jnode.driver.textscreen.TextScreen;
import org.jnode.driver.textscreen.x86.AbstractPcTextScreen;
import org.jnode.driver.video.FrameBufferAPI;
import org.jnode.driver.video.FrameBufferConfiguration;
import org.jnode.driver.video.Surface;
import org.jnode.naming.InitialNaming;
import org.jnode.shell.CommandShell;

/**
* @author Levente S\u00e1ntha
*/
public class FBConsole {
    private static final Logger log = Logger.getLogger(FBConsole.class);

    public static void main(String[] args) throws Exception {

        final String devId = (args.length > 0) ? args[0] : "" /*"fb0"*/;

        Surface g = null;
        try {
            Device dev = null;
            if ("".equals(devId)) {
                final Collection<Device> devs = DeviceUtils.getDevicesByAPI(FrameBufferAPI.class);
                int dev_count = devs.size();
                if (dev_count > 0) {
                    Device[] dev_a = devs.toArray(new Device[dev_count]);
                    dev = dev_a[0];
                }
            }

            if (dev == null) {
                final DeviceManager dm = InitialNaming.lookup(DeviceManager.NAME);
                dev = dm.getDevice(devId);
            }

            final FrameBufferAPI api = dev.getAPI(FrameBufferAPI.class);
            final FrameBufferConfiguration conf = api.getConfigurations()[0];

            g = api.open(conf);

            TextScreenConsoleManager mgr = new TextScreenConsoleManager();

            ScrollableTextScreen ts = new FBConsole.FBPcTextScreen(g).createCompatibleScrollableBufferScreen(500);

            ScrollableTextScreenConsole first =
                new ScrollableTextScreenConsole(mgr, "console", ts,
                    ConsoleManager.CreateOptions.TEXT |
                        ConsoleManager.CreateOptions.SCROLLABLE);

            mgr.registerConsole(first);
            mgr.focus(first);

            new CommandShell(first).run();
            Thread.sleep(60 * 1000);

        } catch (Throwable ex) {
            log.error("Error in FBConsole", ex);
        } finally {
            if (g != null) {
                log.info("Close graphics");
                g.close();
            }
        }
    }


    static class FBPcTextScreen extends AbstractPcTextScreen {
        private static final int SCREEN_WIDTH = 80;
        private static final int SCREEN_HEIGHT = 25;
        char[] buffer;

        int cursorOffset;

        FBScreen screen;

        public FBPcTextScreen(Surface g) {
            super(FBConsole.FBPcTextScreen.SCREEN_WIDTH, FBConsole.FBPcTextScreen.SCREEN_HEIGHT);
            buffer = new char[FBConsole.FBPcTextScreen.SCREEN_WIDTH * FBConsole.FBPcTextScreen.SCREEN_HEIGHT];
            screen = new FBScreen(g);
            for (int i = 0; i < buffer.length; i++) {
                buffer[i] = ' ';
            }
            for (String s : GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames()) {
                System.out.println(s);
            }
        }


        public char getChar(int offset) {
            return buffer[offset];
        }

        public int getColor(int offset) {
            return 0;
        }

        public void set(int offset, char ch, int count, int color) {
            char c = (char) (ch & 0xFF);
            buffer[offset] = c == 0 ? ' ' : c;
            sync(offset, count);
        }

        public void set(int offset, char[] ch, int chOfs, int length, int color) {
            char[] cha = new char[ch.length];
            for (int i = 0; i < cha.length; i++) {
                char c = (char) (ch[i] & 0xFF);
                cha[i] = c == 0 ? ' ' : c;
            }
            System.arraycopy(cha, chOfs, buffer, offset, length);
            sync(offset, length);
        }

        public void set(int offset, char[] ch, int chOfs, int length, int[] colors, int colorsOfs) {
            char[] cha = new char[ch.length];
            for (int i = 0; i < cha.length; i++) {
                char c = (char) (ch[i] & 0xFF);
                cha[i] = c == 0 ? ' ' : c;
            }
            System.arraycopy(cha, chOfs, buffer, offset, length);
            sync(offset, length);
        }

        public void copyContent(int srcOffset, int destOffset, int length) {
            System.arraycopy(buffer, srcOffset * 2, buffer, destOffset * 2, length * 2);
            sync(destOffset, length);
        }

        public void copyTo(TextScreen dst, int offset, int length) {

        }


        @Override
        public void sync(int offset, int length) {
            screen.repaint();
        }

        public int setCursor(int x, int y) {
            cursorOffset = getOffset(x, y);
            return cursorOffset;
        }

        public int setCursorVisible(boolean visible) {
            return cursorOffset;
        }

        /**
         * Copy the content of the given rawData into this screen.
         *
         * @param rawData       the data as a char array
         * @param rawDataOffset the offset in the data array
         */
        public void copyFrom(char[] rawData, int rawDataOffset) {
            if (rawDataOffset < 0) {
                //Unsafe.die("Screen:rawDataOffset = " + rawDataOffset);
            }
            char[] cha = new char[rawData.length];
            for (int i = 0; i < cha.length; i++) {
                char c = (char) (rawData[i] & 0xFF);
                cha[i] = c == 0 ? ' ' : c;
            }

            final int length = getWidth() * getHeight();
            System.arraycopy(cha, rawDataOffset, buffer, 0, length);
            sync(0, length);
        }

        private class FBScreen {
            private int margin = 5;
            private int w = 7;
            private int h = 18;
            private Surface g;
            private int sw;
            private int sh;
            private BufferedImage bi;
            private Graphics ig;
            private Font font;
            private boolean update;

            public FBScreen(Surface g) {
                this.g = g;
                sh = h * FBPcTextScreen.SCREEN_HEIGHT + 2 * margin;
                sw = w * FBPcTextScreen.SCREEN_WIDTH + 2 * margin;
                bi = new BufferedImage(sw, sh, BufferedImage.TYPE_INT_ARGB);
                ig = bi.getGraphics();
                font = new Font(
                    "-FontForge-Bitstream Vera Sans Mono-Book-R-Normal-SansMono--12-120-75-75-P-69-ISO10646",
                    Font.PLAIN, 12);

                /*
                try{
                    FontProvider fm = new BDFFontProvider();
                    if(!fm.provides(font)){
                        throw new RuntimeException(fm + " does not provide" + font);
                    }
                    TextRenderer tr = fm.getTextRenderer(font);
                    if(tr == null)
                        new NullPointerException("Text renderer is null");
                }catch(Exception e){
                    new RuntimeException(e);
                }
                */
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        while (true) {
                            try {
                                paintComponent();
                                synchronized (FBScreen.this) {
                                    if (!update) {
                                        update = false;
                                        FBScreen.this.wait();
                                    }
                                }
                            } catch (InterruptedException x) {
                                break;
                            }
                        }
                    }
                }, "FBScreenUpdater").start();
            }

            protected void paintComponent() {
                ig.setColor(Color.BLACK);
                ig.fillRect(0, 0, sw, sh);
                ig.setColor(Color.WHITE);
                ig.setFont(font);
                for (int i = 0; i < FBPcTextScreen.SCREEN_HEIGHT; i++) {
                    int offset = i * FBPcTextScreen.SCREEN_WIDTH;
                    int lenght = FBPcTextScreen.SCREEN_WIDTH;
                    ig.drawChars(buffer, offset, lenght, margin, h + i * h);
                }
                g.drawCompatibleRaster(bi.getRaster(), 0, 0, 0, 0, sw, sh, Color.BLACK);
            }

            public synchronized void repaint() {
                if (!update) {
                    update = true;
                    notifyAll();
                }
            }
        }
    }
}
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