jviewport

How to pan an image using your mouse in Java Swing

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-30 03:27:08
问题 I am creating a Java app that will allow users to view images and to pan the image using their mouse. To implement the panning of the image I use a combination of mouseClicked and mouseDragged events using JViewports. The bulk of the code is in the mouseDragged method public void mouseDragged(MouseEvent e, WindowWrapper w) { final JViewport vp = someFieldViewPort; //Getting the point that the mouse is dragged to to Point cp = e.getPoint(); final Point vPoint = vp.getViewPosition(); //I found

Enabling auto resize of JTable only if it fit viewport

由 这一生的挚爱 提交于 2019-12-18 04:36:08
问题 I need to create a JTable inside JScrollPane with resizeable columns (when user increase column width - horizontal scrollbar appears). For this I have use table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); . Also, when viewport is wide enough to contain entire table - columns should stretch to fill viewport width. To accomplish this I have override getScrollableTracksViewportWidth() method of JTable class as follow: @Override public boolean getScrollableTracksViewportWidth() { return

JTable how to change BackGround Color

由 血红的双手。 提交于 2019-12-17 03:20:29
问题 I inspired by MeBigFatGuy interesting question, in this conection I have very specific question about Graphisc2D , how to change BackGround Color by depends if is JTables Row visible in the JViewPort , 1) if 1st. & last JTables Row will be visible in the JViewPort , then BackGround would be colored to the Color.red 2) if 1st. & last JTables Row will not be visible in the JViewPort , then BackGround would be colored to the Color.whatever from SSCCE import java.awt.*; import java.awt.event

JTable how to change BackGround Color

由 一个人想着一个人 提交于 2019-12-17 03:20:09
问题 I inspired by MeBigFatGuy interesting question, in this conection I have very specific question about Graphisc2D , how to change BackGround Color by depends if is JTables Row visible in the JViewPort , 1) if 1st. & last JTables Row will be visible in the JViewPort , then BackGround would be colored to the Color.red 2) if 1st. & last JTables Row will not be visible in the JViewPort , then BackGround would be colored to the Color.whatever from SSCCE import java.awt.*; import java.awt.event

Scrolling JComponent in JScrollPane

由 非 Y 不嫁゛ 提交于 2019-12-11 08:28:10
问题 Say, I have a big JComponent: Dimension componentSize = new Dimension(5000,5000); And a smaller JScrollPane: Dimension scrollPaneSize = new Dimension(500,500); I want to display part of my JComponent in JScrollPane, like on the picture below: White rectangle is my JScrollPane, which currently displays part of JComponent from (x1,y1) to (x2,y2) . So, what have I tried: I have created a new JComponent: JComponent component = new JComponent(){ protected void paintComponent(Graphics g) { // Here

uncatchable error with JViewport.setView

由 前提是你 提交于 2019-12-11 07:58:51
问题 I CANNOT provide an SSCCE as I can't make error repeatable outside of my large App. But here is a snippet and the output: if (vp != null) { try { starterModule.writePaneln("Sigma.show() 4.1 vp: "+vp); starterModule.writePaneln("Sigma.show() 4.1 P: "+P); starterModule.writePaneln("Sigma.show() 4.1 scrollPane: "+scrollPane); vp.setView(P); starterModule.writePaneln("Sigma.show() 4.2"); } catch (Exception e) { PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C:\\javaout2.txt"

JScrollPane adjustmentListener and scrollRectToVisible

由 戏子无情 提交于 2019-12-11 05:53:47
问题 I need to handle event from JScrollPane when user scrolls it. In here it is suggested to use addAdjustmentListener to either JViewport or Vertical/HorizontalScrollBar. Is there any difference, which method should I choose? I would like also to use scrollRectToVisible for the same JScrollPane , should I anticipate AdjustmentListener working for this method? Also I wonder whether scrollRectToVisible tries to do minimum scrolling to make required rectangular visible or it tries to make it

Scrolling limitation with JScrollPane and JViewport maximum sizes smaller than contents

由 别来无恙 提交于 2019-12-01 23:42:51
问题 I have a JFrame containing a JScrollPane containing a JPanel . The JPanel contains a bunch of JTextArea s. I'm loading a lot of text into them (about 8k-10k characters). The layout works fine, though the scrolling is a bit laggy. The real issue is that it seems JPanel , JScrollPane and JViewport have a hard 32767 size limit, so when any JTextArea grows higher than that, it can't be scrolled any further to show the last 1/3 of the text. Below you can see a minimal example for the problem. I

Scrolling limitation with JScrollPane and JViewport maximum sizes smaller than contents

由 Deadly 提交于 2019-12-01 22:33:30
I have a JFrame containing a JScrollPane containing a JPanel . The JPanel contains a bunch of JTextArea s. I'm loading a lot of text into them (about 8k-10k characters). The layout works fine, though the scrolling is a bit laggy. The real issue is that it seems JPanel , JScrollPane and JViewport have a hard 32767 size limit, so when any JTextArea grows higher than that, it can't be scrolled any further to show the last 1/3 of the text. Below you can see a minimal example for the problem. I used the NetBeans JFrame designer so it might be a bit lengthy but the only thing I have changed from the

How to pan an image using your mouse in Java Swing

由 六月ゝ 毕业季﹏ 提交于 2019-11-30 10:01:35
I am creating a Java app that will allow users to view images and to pan the image using their mouse. To implement the panning of the image I use a combination of mouseClicked and mouseDragged events using JViewports. The bulk of the code is in the mouseDragged method public void mouseDragged(MouseEvent e, WindowWrapper w) { final JViewport vp = someFieldViewPort; //Getting the point that the mouse is dragged to to Point cp = e.getPoint(); final Point vPoint = vp.getViewPosition(); //I found the image went off the content to show the white border so I included this // Here pp is a field that I
订阅 jviewport