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/*
This file is part of the iText (R) project.
Copyright (c) 1998-2023 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see .
*/
package com.itextpdf.kernel.pdf.canvas.wmf;
import com.itextpdf.io.font.FontProgram;
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.io.image.ImageData;
import com.itextpdf.io.image.ImageDataFactory;
import com.itextpdf.io.image.ImageType;
import com.itextpdf.kernel.exceptions.PdfException;
import com.itextpdf.kernel.colors.Color;
import com.itextpdf.kernel.exceptions.KernelExceptionMessageConstant;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.font.PdfFontFactory.EmbeddingStrategy;
import com.itextpdf.kernel.geom.Point;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.kernel.pdf.canvas.PdfCanvasConstants;
import com.itextpdf.kernel.pdf.xobject.PdfImageXObject;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.List;
/**
* A class to process WMF files. Used internally by {@link com.itextpdf.kernel.pdf.canvas.wmf.WmfImageHelper}.
*/
public class MetaDo {
public static final int META_SETBKCOLOR = 0x0201;
public static final int META_SETBKMODE = 0x0102;
public static final int META_SETMAPMODE = 0x0103;
public static final int META_SETROP2 = 0x0104;
public static final int META_SETRELABS = 0x0105;
public static final int META_SETPOLYFILLMODE = 0x0106;
public static final int META_SETSTRETCHBLTMODE = 0x0107;
public static final int META_SETTEXTCHAREXTRA = 0x0108;
public static final int META_SETTEXTCOLOR = 0x0209;
public static final int META_SETTEXTJUSTIFICATION = 0x020A;
public static final int META_SETWINDOWORG = 0x020B;
public static final int META_SETWINDOWEXT = 0x020C;
public static final int META_SETVIEWPORTORG = 0x020D;
public static final int META_SETVIEWPORTEXT = 0x020E;
public static final int META_OFFSETWINDOWORG = 0x020F;
public static final int META_SCALEWINDOWEXT = 0x0410;
public static final int META_OFFSETVIEWPORTORG = 0x0211;
public static final int META_SCALEVIEWPORTEXT = 0x0412;
public static final int META_LINETO = 0x0213;
public static final int META_MOVETO = 0x0214;
public static final int META_EXCLUDECLIPRECT = 0x0415;
public static final int META_INTERSECTCLIPRECT = 0x0416;
public static final int META_ARC = 0x0817;
public static final int META_ELLIPSE = 0x0418;
public static final int META_FLOODFILL = 0x0419;
public static final int META_PIE = 0x081A;
public static final int META_RECTANGLE = 0x041B;
public static final int META_ROUNDRECT = 0x061C;
public static final int META_PATBLT = 0x061D;
public static final int META_SAVEDC = 0x001E;
public static final int META_SETPIXEL = 0x041F;
public static final int META_OFFSETCLIPRGN = 0x0220;
public static final int META_TEXTOUT = 0x0521;
public static final int META_BITBLT = 0x0922;
public static final int META_STRETCHBLT = 0x0B23;
public static final int META_POLYGON = 0x0324;
public static final int META_POLYLINE = 0x0325;
public static final int META_ESCAPE = 0x0626;
public static final int META_RESTOREDC = 0x0127;
public static final int META_FILLREGION = 0x0228;
public static final int META_FRAMEREGION = 0x0429;
public static final int META_INVERTREGION = 0x012A;
public static final int META_PAINTREGION = 0x012B;
public static final int META_SELECTCLIPREGION = 0x012C;
public static final int META_SELECTOBJECT = 0x012D;
public static final int META_SETTEXTALIGN = 0x012E;
public static final int META_CHORD = 0x0830;
public static final int META_SETMAPPERFLAGS = 0x0231;
public static final int META_EXTTEXTOUT = 0x0a32;
public static final int META_SETDIBTODEV = 0x0d33;
public static final int META_SELECTPALETTE = 0x0234;
public static final int META_REALIZEPALETTE = 0x0035;
public static final int META_ANIMATEPALETTE = 0x0436;
public static final int META_SETPALENTRIES = 0x0037;
public static final int META_POLYPOLYGON = 0x0538;
public static final int META_RESIZEPALETTE = 0x0139;
public static final int META_DIBBITBLT = 0x0940;
public static final int META_DIBSTRETCHBLT = 0x0b41;
public static final int META_DIBCREATEPATTERNBRUSH = 0x0142;
public static final int META_STRETCHDIB = 0x0f43;
public static final int META_EXTFLOODFILL = 0x0548;
public static final int META_DELETEOBJECT = 0x01f0;
public static final int META_CREATEPALETTE = 0x00f7;
public static final int META_CREATEPATTERNBRUSH = 0x01F9;
public static final int META_CREATEPENINDIRECT = 0x02FA;
public static final int META_CREATEFONTINDIRECT = 0x02FB;
public static final int META_CREATEBRUSHINDIRECT = 0x02FC;
public static final int META_CREATEREGION = 0x06FF;
/**
* PdfCanvas of the MetaDo object.
*/
public PdfCanvas cb;
/**
* The InputMeta instance containing the data.
*/
public InputMeta in;
int left;
int top;
int right;
int bottom;
int inch;
MetaState state = new MetaState();
/**
* Creates a MetaDo instance.
*
* @param in inputstream containing the data
* @param cb PdfCanvas
*/
public MetaDo(InputStream in, PdfCanvas cb) {
this.cb = cb;
this.in = new InputMeta(in);
}
/**
* Reads and processes all the data of the InputMeta.
*
* @throws IOException an {@link IOException}
*/
public void readAll() throws IOException {
if (in.readInt() != 0x9AC6CDD7) {
throw new PdfException(KernelExceptionMessageConstant.NOT_A_PLACEABLE_WINDOWS_METAFILE);
}
in.readWord();
left = in.readShort();
top = in.readShort();
right = in.readShort();
bottom = in.readShort();
inch = in.readWord();
state.setScalingX((float)(right - left) / (float)inch * 72f);
state.setScalingY((float)(bottom - top) / (float)inch * 72f);
state.setOffsetWx(left);
state.setOffsetWy(top);
state.setExtentWx(right - left);
state.setExtentWy(bottom - top);
in.readInt();
in.readWord();
in.skip(18);
int tsize;
int function;
cb.setLineCapStyle(PdfCanvasConstants.LineCapStyle.ROUND);
cb.setLineJoinStyle(PdfCanvasConstants.LineJoinStyle.ROUND);
for (;;) {
int lenMarker = in.getLength();
tsize = in.readInt();
if (tsize < 3)
break;
function = in.readWord();
switch (function) {
case 0:
break;
case META_CREATEPALETTE:
case META_CREATEREGION:
case META_DIBCREATEPATTERNBRUSH:
state.addMetaObject(new MetaObject());
break;
case META_CREATEPENINDIRECT:
{
MetaPen pen = new MetaPen();
pen.init(in);
state.addMetaObject(pen);
break;
}
case META_CREATEBRUSHINDIRECT:
{
MetaBrush brush = new MetaBrush();
brush.init(in);
state.addMetaObject(brush);
break;
}
case META_CREATEFONTINDIRECT:
{
MetaFont font = new MetaFont();
font.init(in);
state.addMetaObject(font);
break;
}
case META_SELECTOBJECT:
{
int idx = in.readWord();
state.selectMetaObject(idx, cb);
break;
}
case META_DELETEOBJECT:
{
int idx = in.readWord();
state.deleteMetaObject(idx);
break;
}
case META_SAVEDC:
state.saveState(cb);
break;
case META_RESTOREDC:
{
int idx = in.readShort();
state.restoreState(idx, cb);
break;
}
case META_SETWINDOWORG:
state.setOffsetWy(in.readShort());
state.setOffsetWx(in.readShort());
break;
case META_SETWINDOWEXT:
state.setExtentWy(in.readShort());
state.setExtentWx(in.readShort());
break;
case META_MOVETO:
{
int y = in.readShort();
Point p = new Point(in.readShort(), y);
state.setCurrentPoint(p);
break;
}
case META_LINETO:
{
int y = in.readShort();
int x = in.readShort();
Point p = state.getCurrentPoint();
cb.moveTo(state.transformX((int)p.getX()), state.transformY((int)p.getY()));
cb.lineTo(state.transformX(x), state.transformY(y));
cb.stroke();
state.setCurrentPoint(new Point(x, y));
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;
List ar = PdfCanvas.bezierArc(l, b, r, t, arc1, arc2);
if (ar.size() == 0)
break;
double[] pt = ar.get(0);
cb.moveTo(cx, cy);
cb.lineTo(pt[0], pt[1]);
for (int k = 0; k < ar.size(); ++k) {
pt = 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;
List ar = PdfCanvas.bezierArc(l, b, r, t, arc1, arc2);
if (ar.size() == 0)
break;
double[] pt = ar.get(0);
cx = (float)pt[0];
cy = (float)pt[1];
cb.moveTo(cx, cy);
for (int k = 0; k < ar.size(); ++k) {
pt = 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.endPath();
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:
state.setCurrentBackgroundColor(in.readColor());
break;
case META_SETTEXTCOLOR:
state.setCurrentTextColor(in.readColor());
break;
case META_SETTEXTALIGN:
state.setTextAlign(in.readWord());
break;
case META_SETBKMODE:
state.setBackgroundMode(in.readWord());
break;
case META_SETPOLYFILLMODE:
state.setPolyFillMode(in.readWord());
break;
case META_SETPIXEL:
{
Color color = in.readColor();
int y = in.readShort();
int x = in.readShort();
cb.saveState();
cb.setFillColor(color);
cb.rectangle(state.transformX(x), state.transformY(y), .2f, .2f);
cb.fill();
cb.restoreState();
break;
}
case META_DIBSTRETCHBLT:
case META_STRETCHDIB: {
int rop = in.readInt();
if (function == META_STRETCHDIB) {
/*int usage = */ in.readWord();
}
int srcHeight = in.readShort();
int srcWidth = in.readShort();
int ySrc = in.readShort();
int xSrc = in.readShort();
float destHeight = state.transformY(in.readShort()) - state.transformY(0);
float destWidth = state.transformX(in.readShort()) - state.transformX(0);
float yDest = state.transformY(in.readShort());
float xDest = state.transformX(in.readShort());
byte[] b = new byte[tsize * 2 - (in.getLength() - lenMarker)];
for (int k = 0; k < b.length; ++k)
b[k] = (byte)in.readByte();
try {
cb.saveState();
cb.rectangle(xDest, yDest, destWidth, destHeight);
cb.clip();
cb.endPath();
ImageData bmpImage = ImageDataFactory.createBmp(b, true);
PdfImageXObject imageXObject = new PdfImageXObject(bmpImage);
float width = destWidth * bmpImage.getWidth() / srcWidth;
float height = -destHeight * bmpImage.getHeight() / srcHeight;
float x = xDest - destWidth * xSrc / srcWidth;
float y = yDest + destHeight * ySrc / srcHeight - height;
cb.addXObjectFittedIntoRectangle(imageXObject, new Rectangle(x, y, width, height));
cb.restoreState();
}
catch (Exception e) {
// empty on purpose
}
break;
}
}
in.skip(tsize * 2 - (in.getLength() - lenMarker));
}
state.cleanup(cb);
}
/**
* Output Text at a certain x and y coordinate. Clipped or opaque text isn't supported as of yet.
*
* @param x x-coordinate
* @param y y-coordinate
* @param flag flag indicating clipped or opaque
* @param x1 x1-coordinate of the rectangle if clipped or opaque
* @param y1 y1-coordinate of the rectangle if clipped or opaque
* @param x2 x2-coordinate of the rectangle if clipped or opaque
* @param y2 y1-coordinate of the rectangle if clipped or opaque
* @param text text to output
* @throws IOException an {@link IOException}
*/
public void outputText(int x, int y, int flag, int x1, int y1, int x2, int y2, String text) throws IOException {
MetaFont font = state.getCurrentFont();
float refX = state.transformX(x);
float refY = state.transformY(y);
float angle = state.transformAngle(font.getAngle());
float sin = (float)Math.sin(angle);
float cos = (float)Math.cos(angle);
float fontSize = font.getFontSize(state);
FontProgram fp = font.getFont();
int align = state.getTextAlign();
// NOTE, MetaFont always creates with CP1252 encoding.
int normalizedWidth = 0;
byte[] bytes = font.encoding.convertToBytes(text);
for (byte b : bytes) {
normalizedWidth += fp.getWidth(0xff & b);
}
final float textWidth = FontProgram.convertTextSpaceToGlyphSpace(fontSize) * normalizedWidth;
float tx = 0;
float ty = 0;
float descender = fp.getFontMetrics().getTypoDescender();
float ury = fp.getFontMetrics().getBbox()[3];
cb.saveState();
cb.concatMatrix(cos, sin, -sin, cos, refX, refY);
if ((align & MetaState.TA_CENTER) == MetaState.TA_CENTER) {
tx = -textWidth / 2;
} else if ((align & MetaState.TA_RIGHT) == MetaState.TA_RIGHT) {
tx = -textWidth;
} if ((align & MetaState.TA_BASELINE) == MetaState.TA_BASELINE) {
ty = 0;
} else if ((align & MetaState.TA_BOTTOM) == MetaState.TA_BOTTOM) {
ty = -descender;
} else {
ty = -ury;
}
Color textColor;
if (state.getBackgroundMode() == MetaState.OPAQUE) {
textColor = state.getCurrentBackgroundColor();
cb.setFillColor(textColor);
cb.rectangle(tx, ty + descender, textWidth, ury - descender);
cb.fill();
}
textColor = state.getCurrentTextColor();
cb.setFillColor(textColor);
cb.beginText();
cb.setFontAndSize(PdfFontFactory.createFont(state.getCurrentFont().getFont(),
PdfEncodings.CP1252, EmbeddingStrategy.PREFER_EMBEDDED), fontSize);
cb.setTextMatrix(tx, ty);
cb.showText(text);
cb.endText();
if (font.isUnderline()) {
cb.rectangle(tx, ty - fontSize / 4, textWidth, fontSize / 15);
cb.fill();
}
if (font.isStrikeout()) {
cb.rectangle(tx, ty + fontSize / 3, textWidth, fontSize / 15);
cb.fill();
}
cb.restoreState();
}
/**
* Return true if the pen style is null and if it isn't a brush.
*
* @param isRectangle value to decide how to change the state. If true state.setLineJoinRectangle(cb) is called,
* if false state.setLineJoinPolygon(cb) is called.
* @return true if the pen style is null and if it isn't a brush
*/
public boolean isNullStrokeFill(boolean isRectangle) {
MetaPen pen = state.getCurrentPen();
MetaBrush brush = state.getCurrentBrush();
boolean noPen = pen.getStyle() == MetaPen.PS_NULL;
int style = brush.getStyle();
boolean isBrush = style == MetaBrush.BS_SOLID || style == MetaBrush.BS_HATCHED && state.getBackgroundMode() == MetaState.OPAQUE;
boolean result = noPen && !isBrush;
if (!noPen) {
if (isRectangle)
state.setLineJoinRectangle(cb);
else
state.setLineJoinPolygon(cb);
}
return result;
}
/**
* Stroke and fill the MetaPen and MetaBrush paths.
*/
public void strokeAndFill() {
MetaPen pen = state.getCurrentPen();
MetaBrush brush = state.getCurrentBrush();
int penStyle = pen.getStyle();
int brushStyle = brush.getStyle();
if (penStyle == MetaPen.PS_NULL) {
cb.closePath();
if (state.getPolyFillMode() == MetaState.ALTERNATE) {
cb.eoFill();
}
else {
cb.fill();
}
}
else {
boolean isBrush = brushStyle == MetaBrush.BS_SOLID || brushStyle == MetaBrush.BS_HATCHED && state.getBackgroundMode() == MetaState.OPAQUE;
if (isBrush) {
if (state.getPolyFillMode() == MetaState.ALTERNATE)
cb.closePathEoFillStroke();
else
cb.closePathFillStroke();
}
else {
cb.closePathStroke();
}
}
}
static float getArc(float xCenter, float yCenter, float xDot, float yDot) {
double s = Math.atan2(yDot - yCenter, xDot - xCenter);
if (s < 0)
s += Math.PI * 2;
return (float)(s / Math.PI * 180);
}
/**
* Wrap a BMP image in an WMF.
*
* @param image the BMP image to be wrapped
* @return the wrapped BMP
* @throws IOException an {@link IOException}
*/
public static byte[] wrapBMP(ImageData image) throws IOException {
if (image.getOriginalType() != ImageType.BMP) {
throw new PdfException(KernelExceptionMessageConstant.ONLY_BMP_CAN_BE_WRAPPED_IN_WMF);
}
InputStream imgIn;
byte data[];
if (image.getData() == null) {
imgIn = image.getUrl().openStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
int b = 0;
while ((b = imgIn.read()) != -1)
out.write(b);
imgIn.close();
data = out.toByteArray();
} else {
data = image.getData();
}
int sizeBmpWords = data.length - 14 + 1 >>> 1;
ByteArrayOutputStream os = new ByteArrayOutputStream();
// write metafile header
writeWord(os, 1);
writeWord(os, 9);
writeWord(os, 0x0300);
// total metafile size
writeDWord(os, 9 + 4 + 5 + 5 + 13 + sizeBmpWords + 3);
writeWord(os, 1);
// max record size
writeDWord(os, 14 + sizeBmpWords);
writeWord(os, 0);
// write records
writeDWord(os, 4);
writeWord(os, META_SETMAPMODE);
writeWord(os, 8);
writeDWord(os, 5);
writeWord(os, META_SETWINDOWORG);
writeWord(os, 0);
writeWord(os, 0);
writeDWord(os, 5);
writeWord(os, META_SETWINDOWEXT);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeDWord(os, 13 + sizeBmpWords);
writeWord(os, META_DIBSTRETCHBLT);
writeDWord(os, 0x00cc0020);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);
writeWord(os, 0);
writeWord(os, (int)image.getHeight());
writeWord(os, (int)image.getWidth());
writeWord(os, 0);
writeWord(os, 0);
os.write(data, 14, data.length - 14);
if ((data.length & 1) == 1) {
os.write(0);
}
writeDWord(os, 3);
writeWord(os, 0);
os.close();
return os.toByteArray();
}
/**
* Writes the specified value to the specified outputstream as a word.
*
* @param os outputstream to write the word to
* @param v value to be written
* @throws IOException an {@link IOException}
*/
public static void writeWord(OutputStream os, int v) throws IOException {
os.write(v & 0xff);
os.write(v >>> 8 & 0xff);
}
/**
* Writes the specified value to the specified outputstream as a dword.
*
* @param os outputstream to write the dword to
* @param v value to be written
* @throws IOException an {@link IOException}
*/
public static void writeDWord(OutputStream os, int v) throws IOException {
writeWord(os, v & 0xffff);
writeWord(os, v >>> 16 & 0xffff);
}
}
