textareapainter.java

来自「Mobile 应用程序使用 Java Micro Edition (Java M」· Java 代码 · 共 395 行 · 第 1/2 页

/*
 * TextAreaPainter.java %E%
 *
 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.sun.java.swing.plaf.nimbus;

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
import com.sun.java.swing.Painter;

/**
 */
public final class TextAreaPainter extends AbstractRegionPainter {
    //package private integers representing the available states that
    //this painter will paint. These are used when creating a new instance
    //of TextAreaPainter to determine which region/state is being painted
    //by that instance.
    static final int BACKGROUND_DISABLED = 1;
    static final int BACKGROUND_ENABLED = 2;
    static final int BACKGROUND_DISABLED_NOTINSCROLLPANE = 3;
    static final int BACKGROUND_ENABLED_NOTINSCROLLPANE = 4;
    static final int BACKGROUND_SELECTED = 5;
    static final int BORDER_DISABLED_NOTINSCROLLPANE = 6;
    static final int BORDER_FOCUSED_NOTINSCROLLPANE = 7;
    static final int BORDER_ENABLED_NOTINSCROLLPANE = 8;


    private int state; //refers to one of the static final ints above
    private PaintContext ctx;

    //the following 4 variables are reused during the painting code of the layers
    private Path2D path = new Path2D.Float();
    private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
    private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
    private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);

    //All Colors used for painting are stored here. Ideally, only those colors being used
    //by a particular instance of TextAreaPainter would be created. For the moment at least,
    //however, all are created for each instance.
    private Color color1 = decodeColor("nimbusBlueGrey", -0.015872955f, -0.07995863f, 0.15294117f, 0);
    private Color color2 = decodeColor("nimbusLightBackground", 0.0f, 0.0f, 0.0f, 0);
    private Color color3 = decodeColor("nimbusBlueGrey", -0.006944418f, -0.07187897f, 0.06666666f, 0);
    private Color color4 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07826825f, 0.10588235f, 0);
    private Color color5 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07856284f, 0.11372548f, 0);
    private Color color6 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07796818f, 0.09803921f, 0);
    private Color color7 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.0965403f, -0.18431371f, 0);
    private Color color8 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.1048766f, -0.05098039f, 0);
    private Color color9 = decodeColor("nimbusLightBackground", 0.6666667f, 0.004901961f, -0.19999999f, 0);
    private Color color10 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.10512091f, -0.019607842f, 0);
    private Color color11 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.105344966f, 0.011764705f, 0);
    private Color color12 = decodeColor("nimbusFocus", 0.0f, 0.0f, 0.0f, 0);


    //Array of current component colors, updated in each paint call
    private Object[] componentColors;

    public TextAreaPainter(PaintContext ctx, int state) {
        super();
        this.state = state;
        this.ctx = ctx;
    }

    @Override
    protected void doPaint(Graphics2D g, JComponent c, int width, int height, Object[] extendedCacheKeys) {
        //populate componentColors array with colors calculated in getExtendedCacheKeys call
        componentColors = extendedCacheKeys;
        //generate this entire method. Each state/bg/fg/border combo that has
        //been painted gets its own KEY and paint method.
        switch(state) {
            case BACKGROUND_DISABLED: paintBackgroundDisabled(g); break;
            case BACKGROUND_ENABLED: paintBackgroundEnabled(g); break;
            case BACKGROUND_DISABLED_NOTINSCROLLPANE: paintBackgroundDisabledAndNotInScrollPane(g); break;
            case BACKGROUND_ENABLED_NOTINSCROLLPANE: paintBackgroundEnabledAndNotInScrollPane(g); break;
            case BACKGROUND_SELECTED: paintBackgroundSelected(g); break;
            case BORDER_DISABLED_NOTINSCROLLPANE: paintBorderDisabledAndNotInScrollPane(g); break;
            case BORDER_FOCUSED_NOTINSCROLLPANE: paintBorderFocusedAndNotInScrollPane(g); break;
            case BORDER_ENABLED_NOTINSCROLLPANE: paintBorderEnabledAndNotInScrollPane(g); break;

        }
    }
        
    protected Object[] getExtendedCacheKeys(JComponent c) {
        Object[] extendedCacheKeys = null;
        switch(state) {
            case BACKGROUND_ENABLED:
                extendedCacheKeys = new Object[] {
                     getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
                break;
            case BACKGROUND_ENABLED_NOTINSCROLLPANE:
                extendedCacheKeys = new Object[] {
                     getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
                break;
            case BORDER_FOCUSED_NOTINSCROLLPANE:
                extendedCacheKeys = new Object[] {
                     getComponentColor(c, "background", color9, 0.004901961f, -0.19999999f, 0),
                     getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
                break;
            case BORDER_ENABLED_NOTINSCROLLPANE:
                extendedCacheKeys = new Object[] {
                     getComponentColor(c, "background", color9, 0.004901961f, -0.19999999f, 0),
                     getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
                break;
        }
        return extendedCacheKeys;
    }

    @Override
    protected final PaintContext getPaintContext() {
        return ctx;
    }

    private void paintBackgroundDisabled(Graphics2D g) {
        rect = decodeRect1();
        g.setPaint(color1);
        g.fill(rect);

    }

    private void paintBackgroundEnabled(Graphics2D g) {
        rect = decodeRect1();
        g.setPaint((Color)componentColors[0]);
        g.fill(rect);

    }

    private void paintBackgroundDisabledAndNotInScrollPane(Graphics2D g) {
        rect = decodeRect2();
        g.setPaint(color1);
        g.fill(rect);

    }

    private void paintBackgroundEnabledAndNotInScrollPane(Graphics2D g) {
        rect = decodeRect2();
        g.setPaint((Color)componentColors[0]);
        g.fill(rect);

    }

    private void paintBackgroundSelected(Graphics2D g) {
        rect = decodeRect2();
        g.setPaint(color2);
        g.fill(rect);

    }

    private void paintBorderDisabledAndNotInScrollPane(Graphics2D g) {
        rect = decodeRect3();
        g.setPaint(decodeGradient1(rect));
        g.fill(rect);
        rect = decodeRect4();
        g.setPaint(decodeGradient2(rect));
        g.fill(rect);
        rect = decodeRect5();
        g.setPaint(color6);
        g.fill(rect);
        rect = decodeRect6();
        g.setPaint(color4);
        g.fill(rect);
        rect = decodeRect7();
        g.setPaint(color4);
        g.fill(rect);

    }

    private void paintBorderFocusedAndNotInScrollPane(Graphics2D g) {
        rect = decodeRect8();
        g.setPaint(decodeGradient3(rect));
        g.fill(rect);
        rect = decodeRect9();
        g.setPaint(decodeGradient4(rect));
        g.fill(rect);
        rect = decodeRect10();
        g.setPaint(color10);
        g.fill(rect);
        rect = decodeRect11();
        g.setPaint(color10);
        g.fill(rect);
        rect = decodeRect12();
        g.setPaint(color11);
        g.fill(rect);
        path = decodePath1();
        g.setPaint(color12);
        g.fill(path);

    }

    private void paintBorderEnabledAndNotInScrollPane(Graphics2D g) {
        rect = decodeRect8();
        g.setPaint(decodeGradient5(rect));
        g.fill(rect);
        rect = decodeRect9();
        g.setPaint(decodeGradient4(rect));
        g.fill(rect);