metado.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

                    break;
                }
                case META_POLYLINE:
                {
                    state.setLineJoinPolygon(cb);
                    int len = in.readWord();
                    int x = in.readShort();
                    int y = in.readShort();
                    cb.moveTo(state.transformX(x), state.transformY(y));
                    for (int k = 1; k < len; ++k) {
                        x = in.readShort();
                        y = in.readShort();
                        cb.lineTo(state.transformX(x), state.transformY(y));
                    }
                    cb.stroke();
                    break;
                }
                case META_POLYGON:
                {
                    if (isNullStrokeFill(false))
                        break;
                    int len = in.readWord();
                    int sx = in.readShort();
                    int sy = in.readShort();
                    cb.moveTo(state.transformX(sx), state.transformY(sy));
                    for (int k = 1; k < len; ++k) {
                        int x = in.readShort();
                        int y = in.readShort();
                        cb.lineTo(state.transformX(x), state.transformY(y));
                    }
                    cb.lineTo(state.transformX(sx), state.transformY(sy));
                    strokeAndFill();
                    break;
                }
                case META_POLYPOLYGON:
                {
                    if (isNullStrokeFill(false))
                        break;
                    int numPoly = in.readWord();
                    int lens[] = new int[numPoly];
                    for (int k = 0; k < lens.length; ++k)
                        lens[k] = in.readWord();
                    for (int j = 0; j < lens.length; ++j) {
                        int len = lens[j];
                        int sx = in.readShort();
                        int sy = in.readShort();
                        cb.moveTo(state.transformX(sx), state.transformY(sy));
                        for (int k = 1; k < len; ++k) {
                            int x = in.readShort();
                            int y = in.readShort();
                            cb.lineTo(state.transformX(x), state.transformY(y));
                        }
                        cb.lineTo(state.transformX(sx), state.transformY(sy));
                    }
                    strokeAndFill();
                    break;
                }
                case META_ELLIPSE:
                {
                    if (isNullStrokeFill(state.getLineNeutral()))
                        break;
                    int b = in.readShort();
                    int r = in.readShort();
                    int t = in.readShort();
                    int l = in.readShort();
                    cb.arc(state.transformX(l), state.transformY(b), state.transformX(r), state.transformY(t), 0, 360);
                    strokeAndFill();
                    break;
                }
                case META_ARC:
                {
                    if (isNullStrokeFill(state.getLineNeutral()))
                        break;
                    float yend = state.transformY(in.readShort());
                    float xend = state.transformX(in.readShort());
                    float ystart = state.transformY(in.readShort());
                    float xstart = state.transformX(in.readShort());
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    float cx = (r + l) / 2;
                    float cy = (t + b) / 2;
                    float arc1 = getArc(cx, cy, xstart, ystart);
                    float arc2 = getArc(cx, cy, xend, yend);
                    arc2 -= arc1;
                    if (arc2 <= 0)
                        arc2 += 360;
                    cb.arc(l, b, r, t, arc1, arc2);
                    cb.stroke();
                    break;
                }
                case META_PIE:
                {
                    if (isNullStrokeFill(state.getLineNeutral()))
                        break;
                    float yend = state.transformY(in.readShort());
                    float xend = state.transformX(in.readShort());
                    float ystart = state.transformY(in.readShort());
                    float xstart = state.transformX(in.readShort());
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    float cx = (r + l) / 2;
                    float cy = (t + b) / 2;
                    float arc1 = getArc(cx, cy, xstart, ystart);
                    float arc2 = getArc(cx, cy, xend, yend);
                    arc2 -= arc1;
                    if (arc2 <= 0)
                        arc2 += 360;
                    ArrayList ar = PdfContentByte.bezierArc(l, b, r, t, arc1, arc2);
                    if (ar.isEmpty())
                        break;
                    float pt[] = (float [])ar.get(0);
                    cb.moveTo(cx, cy);
                    cb.lineTo(pt[0], pt[1]);
                    for (int k = 0; k < ar.size(); ++k) {
                        pt = (float [])ar.get(k);
                        cb.curveTo(pt[2], pt[3], pt[4], pt[5], pt[6], pt[7]);
                    }
                    cb.lineTo(cx, cy);
                    strokeAndFill();
                    break;
                }
                case META_CHORD:
                {
                    if (isNullStrokeFill(state.getLineNeutral()))
                        break;
                    float yend = state.transformY(in.readShort());
                    float xend = state.transformX(in.readShort());
                    float ystart = state.transformY(in.readShort());
                    float xstart = state.transformX(in.readShort());
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    float cx = (r + l) / 2;
                    float cy = (t + b) / 2;
                    float arc1 = getArc(cx, cy, xstart, ystart);
                    float arc2 = getArc(cx, cy, xend, yend);
                    arc2 -= arc1;
                    if (arc2 <= 0)
                        arc2 += 360;
                    ArrayList ar = PdfContentByte.bezierArc(l, b, r, t, arc1, arc2);
                    if (ar.isEmpty())
                        break;
                    float pt[] = (float [])ar.get(0);
                    cx = pt[0];
                    cy = pt[1];
                    cb.moveTo(cx, cy);
                    for (int k = 0; k < ar.size(); ++k) {
                        pt = (float [])ar.get(k);
                        cb.curveTo(pt[2], pt[3], pt[4], pt[5], pt[6], pt[7]);
                    }
                    cb.lineTo(cx, cy);
                    strokeAndFill();
                    break;
                }
                case META_RECTANGLE:
                {
                    if (isNullStrokeFill(true))
                        break;
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    cb.rectangle(l, b, r - l, t - b);
                    strokeAndFill();
                    break;
                }
                case META_ROUNDRECT:
                {
                    if (isNullStrokeFill(true))
                        break;
                    float h = state.transformY(0) - state.transformY(in.readShort());
                    float w = state.transformX(in.readShort()) - state.transformX(0);
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    cb.roundRectangle(l, b, r - l, t - b, (h + w) / 4);
                    strokeAndFill();
                    break;
                }
                case META_INTERSECTCLIPRECT:
                {
                    float b = state.transformY(in.readShort());
                    float r = state.transformX(in.readShort());
                    float t = state.transformY(in.readShort());
                    float l = state.transformX(in.readShort());
                    cb.rectangle(l, b, r - l, t - b);
                    cb.eoClip();
                    cb.newPath();
                    break;
                }
                case META_EXTTEXTOUT:
                {
                    int y = in.readShort();
                    int x = in.readShort();
                    int count = in.readWord();
                    int flag = in.readWord();
                    int x1 = 0;
                    int y1 = 0;
                    int x2 = 0;
                    int y2 = 0;
                    if ((flag & (MetaFont.ETO_CLIPPED | MetaFont.ETO_OPAQUE)) != 0) {
                        x1 = in.readShort();
                        y1 = in.readShort();
                        x2 = in.readShort();
                        y2 = in.readShort();
                    }
                    byte text[] = new byte[count];
                    int k;
                    for (k = 0; k < count; ++k) {
                        byte c = (byte)in.readByte();
                        if (c == 0)
                            break;
                        text[k] = c;
                    }
                    String s;
                    try {
                        s = new String(text, 0, k, "Cp1252");
                    }
                    catch (UnsupportedEncodingException e) {
                        s = new String(text, 0, k);
                    }
                    outputText(x, y, flag, x1, y1, x2, y2, s);
                    break;
                }
                case META_TEXTOUT:
                {
                    int count = in.readWord();
                    byte text[] = new byte[count];
                    int k;
                    for (k = 0; k < count; ++k) {
                        byte c = (byte)in.readByte();
                        if (c == 0)
                            break;
                        text[k] = c;
                    }
                    String s;
                    try {
                        s = new String(text, 0, k, "Cp1252");
                    }
                    catch (UnsupportedEncodingException e) {
                        s = new String(text, 0, k);
                    }
                    count = (count + 1) & 0xfffe;
                    in.skip(count - k);
                    int y = in.readShort();
                    int x = in.readShort();
                    outputText(x, y, 0, 0, 0, 0, 0, s);
                    break;
                }
                case META_SETBKCOLOR: