真实打印机的打印输出与java中使用虚拟打印机的打印输出不同
在我的应用程序中,以下代码打印卡的正面和背面。在虚拟打印机(如虚拟PDF打印机、ImagePrinter Pro和Microsoft XPS Document Writer)上,输出是正确的。但当我在真正的打印机上测试时,它只打印了一半的图像宽度,而且高度是正确的。我用A4和字母格式进行了测试,但都在vane中。别问有什么问题真实打印机的打印输出与java中使用虚拟打印机的打印输出不同,java,Java,在我的应用程序中,以下代码打印卡的正面和背面。在虚拟打印机(如虚拟PDF打印机、ImagePrinter Pro和Microsoft XPS Document Writer)上,输出是正确的。但当我在真正的打印机上测试时,它只打印了一半的图像宽度,而且高度是正确的。我用A4和字母格式进行了测试,但都在vane中。别问有什么问题 public int print(Graphics g, PageFormat pageFormat, int pageIndex) { Graphics
public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC);
int w = 360, h = 240;
int padding = 2;
BufferedImage temp = new BufferedImage(w * 2, h, BufferedImage.TYPE_INT_ARGB);
Graphics2D tempG = temp.createGraphics();
tempG.drawImage(card.getFrontImage(), 0, 0,
w, h, null);
tempG.drawImage(card.getBackImage(), w, 0,
w, h, null);
tempG.dispose();
g2d.drawImage(temp, (int) 0, 0 + padding,
(int) pageFormat.getImageableWidth(), (int) pageFormat.getImageableHeight()/5, null);
}
有什么帮助吗?这是一个非常简单的例子
PageFormat
可以手动(如示例中所示)或从打印机选择对话框建立
public class TestPrint implements Printable {
private BufferedImage background;
public static final float DPI = 72;
public static void main(String[] args) {
new TestPrint();
}
public TestPrint() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
try {
background = ImageIO.read(new File("/Users/swhitehead/Dropbox/MegaTokyo/MgkGrl_Yuki_by_fredrin.jpg"));
} catch (IOException ex) {
ex.printStackTrace();
}
float width = cmToPixel(21f, DPI);
float height = cmToPixel(29.7f, DPI);
Paper paper = new Paper();
float margin = cmToPixel(1, DPI);
paper.setImageableArea(margin, margin, width - (margin * 2), height - (margin * 2));
PageFormat pf = new PageFormat();
pf.setPaper(paper);
BufferedImage img = new BufferedImage(Math.round(width), Math.round(height), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = img.createGraphics();
g2d.setColor(Color.WHITE);
g2d.fill(new Rectangle2D.Float(0, 0, width, height));
try {
g2d.setClip(new Rectangle2D.Double(pf.getImageableX(), pf.getImageableY(), pf.getImageableWidth(), pf.getImageableHeight()));
print(g2d, pf, 0);
} catch (PrinterException ex) {
ex.printStackTrace();
}
g2d.dispose();
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JLabel(new ImageIcon(img)));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public float cmToPixel(float cm, float dpi) {
return (dpi / 2.54f) * cm;
}
public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {
if (page > 0) {
return NO_SUCH_PAGE;
}
Graphics2D g = (Graphics2D) graphics;
g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
if (background != null) {
int x = (int)Math.round((pageFormat.getImageableWidth() - background.getWidth()) / 2f);
int y = (int)Math.round((pageFormat.getImageableHeight() - background.getHeight()) / 2f);
g.drawImage(background, x, y, null);
}
g.setColor(Color.BLACK);
g.draw(new Rectangle2D.Double(0, 0, pageFormat.getImageableWidth() - 1, pageFormat.getImageableHeight() - 1));
return PAGE_EXISTS;
}
}
这是一个非常简单的例子
PageFormat
可以手动(如示例中所示)或从打印机选择对话框建立
public class TestPrint implements Printable {
private BufferedImage background;
public static final float DPI = 72;
public static void main(String[] args) {
new TestPrint();
}
public TestPrint() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception ex) {
}
try {
background = ImageIO.read(new File("/Users/swhitehead/Dropbox/MegaTokyo/MgkGrl_Yuki_by_fredrin.jpg"));
} catch (IOException ex) {
ex.printStackTrace();
}
float width = cmToPixel(21f, DPI);
float height = cmToPixel(29.7f, DPI);
Paper paper = new Paper();
float margin = cmToPixel(1, DPI);
paper.setImageableArea(margin, margin, width - (margin * 2), height - (margin * 2));
PageFormat pf = new PageFormat();
pf.setPaper(paper);
BufferedImage img = new BufferedImage(Math.round(width), Math.round(height), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = img.createGraphics();
g2d.setColor(Color.WHITE);
g2d.fill(new Rectangle2D.Float(0, 0, width, height));
try {
g2d.setClip(new Rectangle2D.Double(pf.getImageableX(), pf.getImageableY(), pf.getImageableWidth(), pf.getImageableHeight()));
print(g2d, pf, 0);
} catch (PrinterException ex) {
ex.printStackTrace();
}
g2d.dispose();
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JLabel(new ImageIcon(img)));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public float cmToPixel(float cm, float dpi) {
return (dpi / 2.54f) * cm;
}
public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {
if (page > 0) {
return NO_SUCH_PAGE;
}
Graphics2D g = (Graphics2D) graphics;
g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
if (background != null) {
int x = (int)Math.round((pageFormat.getImageableWidth() - background.getWidth()) / 2f);
int y = (int)Math.round((pageFormat.getImageableHeight() - background.getHeight()) / 2f);
g.drawImage(background, x, y, null);
}
g.setColor(Color.BLACK);
g.draw(new Rectangle2D.Double(0, 0, pageFormat.getImageableWidth() - 1, pageFormat.getImageableHeight() - 1));
return PAGE_EXISTS;
}
}
你是如何建立页面格式的?甚至都没碰它。无法确定如何处理PageFormat。如何建立PageFormat?甚至都没碰它。我不知道如何处理PageFormat。你真的增强了我对这种打印材料的知识基础。但问题仍然存在。我的代码只打印一张卡片(一张拉伸的卡片)。我已经设置了一个打印5张卡片的循环,这是可行的,但是每张卡片的背面都不打印。那么,你是在A4纸上打印两面吗?这些卡片有多大,图像有多大?你真的增强了我关于印刷的知识。但问题仍然存在。我的代码只打印一张卡片(一张拉伸的卡片)。我已经设置了一个打印5张卡片的循环,这是可行的,但是每张卡片的背面都不打印。那么,你是在A4纸上打印两面吗?卡片的尺寸和图像的尺寸是多少?