[英]Draw Graphics2D to another Graphics2D
It is possible to draw from one Graphics2D
to another Graphics2D
? 可以从一个
Graphics2D
绘制到另一个Graphics2D
吗?
Let me explain. 让我解释。 I have printing issues, when i display a
JTextArea
or JTextPanel
in screen, internaly its used sun.java2d.SunGraphics2D
, but when im printing its used sun.print.PeekGraphics
and sun.awt.windows.WPathGraphics
. 我有打印问题,当我在屏幕上显示
JTextArea
或JTextPanel
时,内部使用sun.java2d.SunGraphics2D
,但是当我打印其使用的sun.print.PeekGraphics
和sun.awt.windows.WPathGraphics
。 The problem is with some kind of Fonts, like Arial. 问题出在某些字体上,比如Arial。 In some sizes lines are cut.
在某些尺寸中,线条被切割。 I have tryed a lot of ways to render the text in printing,
Graphics2D.drawString
, SwingUtilities2.drawString
, TextLayout.drawString
, but in some cases lines are still cut, or lines are not cut but some kind of justification makes disapear white spaces. 我已经尝试了很多方法来渲染打印中的文本,
Graphics2D.drawString
, SwingUtilities2.drawString
, TextLayout.drawString
,但在某些情况下仍然会剪切线条,或者没有剪切线条,但是某种理由会使消失的白色空间变得消失。
So my idea is try to render components with sun.java2d.SunGraphics2D and "copy" the surface to the printer via sun.print.PeekGraphics
or sun.awt.windows.WPathGraphics
. 所以我的想法是尝试使用sun.java2d.SunGraphics2D渲染组件,并通过
sun.print.PeekGraphics
或sun.awt.windows.WPathGraphics
将表面“复制”到打印机。
Thanks in advance. 提前致谢。
Yes its possible, thats how double buffering is achieved in a lot of Java Games. 是的它可能,这就是如何在许多Java游戏中实现双缓冲。 What you need is the Graphics2D's drawImage() method which takes in another Graphics2D object to draw in. Eg from a small game of mine:
你需要的是Graphics2D的drawImage()方法,它接受另一个Graphics2D对象来绘制。例如,从我的一个小游戏:
private Main(){
...
/* Create the backbuffer as a BufferedImage object */
this.doubleBuffer = new BufferedImage(this.WIDTH, this.HEIGHT, BufferedImage.TYPE_INT_RGB);
/* create a Graphics 2D object to draw INTO this backbuffer */
this.doubleBufferG2D = (Graphics2D) doubleBuffer.createGraphics();
...
}
Somewhere else: 别的地方:
/*Now lets draw the backbuffer INTO the screen */
g2d.drawImage(doubleBuffer, null , 0, 0);
Edit: heh I realized its not exactly as above...lemme think on it. 编辑:嘿,我意识到它不完全如上所述...... lemme想一想。
Edit2: Alright the above can still be used a sample, but the sequence of steps to draw from one Graphics2D to another should be as such: 1. From a Graphics2D object to an Image/BufferedImage object using drawGraphics(). Edit2:好的,上面仍然可以使用一个样本,但是从一个Graphics2D到另一个Graphics2D绘制的步骤顺序应该是这样的:1。使用drawGraphics()从Graphics2D对象到Image / BufferedImage对象。 2. From the Image/BufferedImage above, extract its member Graphics2D object by using itscreateGraphics().
2.从上面的Image / BufferedImage中,使用itscreateGraphics()提取其成员Graphics2D对象。
Looks like you can do one of two things: 看起来你可以做以下两件事之一:
create a Graphics2D on an image, do your rendering, then draw the image into another Graphics2D 在图像上创建Graphics2D,进行渲染,然后将图像绘制到另一个Graphics2D中
or create Graphics2D from original Graphics2D using Graphics.create() methods and then do you rendering. 或使用Graphics.create()方法从原始Graphics2D创建Graphics2D,然后进行渲染。
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