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extract class refactoring. #167

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167 changes: 86 additions & 81 deletions examples/src/main/java/org/apache/pdfbox/examples/pdmodel/CreatePatternsPDF.java
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Original file line number Diff line number Diff line change
Expand Up @@ -36,95 +36,100 @@
*
* @author Tilman Hausherr
*/
public final class CreatePatternsPDF
{
private CreatePatternsPDF()
{
}
public final class CreatePatternsPDF {

public static void main(String[] args) throws IOException
{
try (PDDocument doc = new PDDocument())
{
public static void main(String[] args) throws IOException {
try (PDDocument doc = new PDDocument()) {
PDPage page = new PDPage();
doc.addPage(page);
page.setResources(new PDResources());


PatternDrawer drawer = new PatternDrawer(doc, page);

// Colored pattern, i.e. the pattern content stream will set its own color(s)
try (PDPageContentStream pcs = new PDPageContentStream(doc, page))

// Table 75 spec
PDTilingPattern coloredTilingPattern = drawer.createTilingPattern(
new PDRectangle(0, 0, 10, 10),
PDTilingPattern.PAINT_COLORED,
PDTilingPattern.TILING_CONSTANT_SPACING,
10,
10);
COSName coloredTilingPatternName = page.getResources().add(coloredTilingPattern);
try (PDPatternContentStream cs = new PDPatternContentStream(coloredTilingPattern))
{
// Set color, draw diagonal line + 2 more diagonals so that corners look good
cs.setStrokingColor(Color.red);
cs.moveTo(0, 0);
cs.lineTo(10, 10);
cs.moveTo(-1, 9);
cs.lineTo(1, 11);
cs.moveTo(9, -1);
cs.lineTo(11, 1);
cs.stroke();
}
PDColorSpace coloredPatternCS = new PDPattern(null, PDDeviceRGB.INSTANCE);
PDColor patternColor = new PDColor(coloredTilingPatternName, coloredPatternCS);
drawer.drawPattern(50, 500, 200, 200, patternColor);

// Uncolored pattern - the color is passed later

PDTilingPattern uncoloredTilingPattern = drawer.createTilingPattern(
new PDRectangle(0, 0, 10, 10),
PDTilingPattern.PAINT_UNCOLORED,
PDTilingPattern.TILING_NO_DISTORTION,
10,
10);
COSName uncoloredTilingPatternName = page.getResources().add(uncoloredTilingPattern);
try (PDPatternContentStream cs = new PDPatternContentStream(uncoloredTilingPattern))
{
// Colored pattern, i.e. the pattern content stream will set its own color(s)
PDColorSpace patternCS1 = new PDPattern(null, PDDeviceRGB.INSTANCE);

// Table 75 spec
PDTilingPattern tilingPattern1 = new PDTilingPattern();
tilingPattern1.setBBox(new PDRectangle(0, 0, 10, 10));
tilingPattern1.setPaintType(PDTilingPattern.PAINT_COLORED);
tilingPattern1.setTilingType(PDTilingPattern.TILING_CONSTANT_SPACING);
tilingPattern1.setXStep(10);
tilingPattern1.setYStep(10);

COSName patternName1 = page.getResources().add(tilingPattern1);
try (PDPatternContentStream cs1 = new PDPatternContentStream(tilingPattern1))
{
// Set color, draw diagonal line + 2 more diagonals so that corners look good
cs1.setStrokingColor(Color.red);
cs1.moveTo(0, 0);
cs1.lineTo(10, 10);
cs1.moveTo(-1, 9);
cs1.lineTo(1, 11);
cs1.moveTo(9, -1);
cs1.lineTo(11, 1);
cs1.stroke();
}

PDColor patternColor1 = new PDColor(patternName1, patternCS1);

pcs.addRect(50, 500, 200, 200);
pcs.setNonStrokingColor(patternColor1);
pcs.fill();

// Uncolored pattern - the color is passed later
PDTilingPattern tilingPattern2 = new PDTilingPattern();
tilingPattern2.setBBox(new PDRectangle(0, 0, 10, 10));
tilingPattern2.setPaintType(PDTilingPattern.PAINT_UNCOLORED);
tilingPattern2.setTilingType(PDTilingPattern.TILING_NO_DISTORTION);
tilingPattern2.setXStep(10);
tilingPattern2.setYStep(10);

COSName patternName2 = page.getResources().add(tilingPattern2);
try (PDPatternContentStream cs2 = new PDPatternContentStream(tilingPattern2))
{
// draw a cross
cs2.moveTo(0, 5);
cs2.lineTo(10, 5);
cs2.moveTo(5, 0);
cs2.lineTo(5, 10);
cs2.stroke();
}

// Uncolored pattern colorspace needs to know the colorspace
// for the color values that will be passed when painting the fill
PDColorSpace patternCS2 = new PDPattern(null, PDDeviceRGB.INSTANCE);
PDColor patternColor2green = new PDColor(
new float[]{0,1,0},
patternName2,
patternCS2);

pcs.addRect(300, 500, 100, 100);
pcs.setNonStrokingColor(patternColor2green);
pcs.fill();

// same pattern again but with different color + different pattern start position
PDColor patternColor2blue = new PDColor(
new float[]{0,0,1},
patternName2,
patternCS2);
pcs.addRect(455, 505, 100, 100);
pcs.setNonStrokingColor(patternColor2blue);
pcs.fill();
// draw a cross
cs.moveTo(0, 5);
cs.lineTo(10, 5);
cs.moveTo(5, 0);
cs.lineTo(5, 10);
cs.stroke();
}

// Uncolored pattern colorspace needs to know the colorspace
// for the color values that will be passed when painting the fill
PDColorSpace uncoloredPatternCS = new PDPattern(null, PDDeviceRGB.INSTANCE);
PDColor patternColor2green = new PDColor(new float[]{0, 1, 0}, uncoloredTilingPatternName, uncoloredPatternCS);
drawer.drawPattern(300, 500, 100, 100, patternColor2green);

// same pattern again but with different color + different pattern start position
PDColor patternColor2blue = new PDColor(new float[]{0, 0, 1}, uncoloredTilingPatternName, uncoloredPatternCS);
drawer.drawPattern(455, 505, 100, 100, patternColor2blue);

doc.save("patterns.pdf");
}
}
}

final class PatternDrawer{
private final PDDocument document;
private final PDPage page;

public PatternDrawer(PDDocument document, PDPage page) {
this.document = document;
this.page = page;
}

public void drawPattern(float x, float y, float width, float height, PDColor patternColor) throws IOException {
try (PDPageContentStream pcs = new PDPageContentStream(document, page)) {
pcs.addRect(x, y, width, height);
pcs.setNonStrokingColor(patternColor);
pcs.fill();
}
}

public PDTilingPattern createTilingPattern(PDRectangle pdRectangle, int paintType, int tilingType, float xStep, float yStep){
PDTilingPattern tilingPattern = new PDTilingPattern();
tilingPattern.setBBox(pdRectangle);
tilingPattern.setPaintType(paintType);
tilingPattern.setTilingType(tilingType);
tilingPattern.setXStep(xStep);
tilingPattern.setYStep(yStep);
return tilingPattern;
}
}