i making chat messenger in java netbeans.
works now, want differentiate text background color of sender , receiver user can understand chat conversation.
using jtextarea show chat conversation.
tell me technique use there.
here example searching on google don't know how use this.
following class used draw first chat bubble: (arrow @ left side of bubble)
import java.awt.basicstroke; import java.awt.color; import java.awt.graphics; import java.awt.graphics2d; import java.awt.polygon; import java.awt.renderinghints; import java.awt.geom.area; import java.awt.geom.roundrectangle2d; import javax.swing.jpanel; /** * @ */ public class leftarrowbubble extends jpanel { private static final long serialversionuid = -5389178141802153305l; private int radius = 10; private int arrowsize = 12; private int strokethickness = 3; private int padding = strokethickness / 2; @override protected void paintcomponent(final graphics g) { final graphics2d g2d = (graphics2d) g; g2d.setcolor(new color(0.5f, 0.8f, 1f)); int x = padding + strokethickness + arrowsize; int width = getwidth() - arrowsize - (strokethickness * 2); int bottomliney = getheight() - strokethickness; g2d.fillrect(x, padding, width, bottomliney); g2d.setrenderinghints(new renderinghints(renderinghints.key_antialiasing, renderinghints.value_antialias_on)); g2d.setstroke(new basicstroke(strokethickness)); roundrectangle2d.double rect = new roundrectangle2d.double(x, padding, width, bottomliney, radius, radius); polygon arrow = new polygon(); arrow.addpoint(20, 8); arrow.addpoint(0, 10); arrow.addpoint(20, 12); area area = new area(rect); area.add(new area(arrow)); g2d.draw(area); } } following code draw second chat bubble. (arrow @ right side of bubble):
import java.awt.basicstroke; import java.awt.color; import java.awt.graphics; import java.awt.graphics2d; import java.awt.polygon; import java.awt.renderinghints; import java.awt.geom.area; import java.awt.geom.roundrectangle2d; import javax.swing.jpanel; /** * @author */ public class rightarrowbubble extends jpanel { private static final long serialversionuid = -5389178141802153305l; private int strokethickness = 3; private int radius = 10; private int arrowsize = 12; private int padding = strokethickness / 2; @override protected void paintcomponent(final graphics g) { final graphics2d g2d = (graphics2d) g; g2d.setcolor(new color(0.5f, 0.5f, 1f)); int bottomliney = getheight() - strokethickness; int width = getwidth() - arrowsize - (strokethickness * 2); g2d.fillrect(padding, padding, width, bottomliney); roundrectangle2d.double rect = new roundrectangle2d.double(padding, padding, width, bottomliney, radius, radius); polygon arrow = new polygon(); arrow.addpoint(width, 8); arrow.addpoint(width + arrowsize, 10); arrow.addpoint(width, 12); area area = new area(rect); area.add(new area(arrow)); g2d.setrenderinghints(new renderinghints(renderinghints.key_antialiasing, renderinghints.value_antialias_on)); g2d.setstroke(new basicstroke(strokethickness)); g2d.draw(area); } } and here code using above 2 classes:
import java.awt.headlessexception; import java.net.malformedurlexception; import java.net.url; import javax.swing.grouplayout; import javax.swing.imageicon; import javax.swing.jlabel; import javax.swing.joptionpane; import javax.swing.jpanel; import javax.swing.swingutilities; /** * @author harsh */ public class testpanel extends jpanel { private static final long serialversionuid = 9029457020704524363l; private jlabel messagelbl1, userimagelbl1, messagelbl, userimagelbl; private jpanel msgpanel1, msgpanel; string userimageurl = "http://cdn1.iconfinder.com/data/icons/nuvola2/22x22/apps/personal.png"; public testpanel() throws malformedurlexception { userimagelbl = new jlabel(); msgpanel = new leftarrowbubble(); messagelbl = new jlabel(); messagelbl1 = new jlabel(); msgpanel1 = new rightarrowbubble(); userimagelbl1 = new jlabel(); userimagelbl.seticon(new imageicon(new url(userimageurl))); messagelbl.settext("hi, how you?"); grouplayout msgpanellayout = new grouplayout(msgpanel); msgpanel.setlayout(msgpanellayout); msgpanellayout.sethorizontalgroup( msgpanellayout.createparallelgroup(grouplayout.alignment.leading) .addgroup(msgpanellayout.createsequentialgroup() .addgap(21, 21, 21) .addcomponent(messagelbl) .addcontainergap(162, short.max_value)) ); msgpanellayout.setverticalgroup( msgpanellayout.createparallelgroup(grouplayout.alignment.leading) .addgroup(msgpanellayout.createsequentialgroup() .addcomponent(messagelbl) .addcontainergap(grouplayout.default_size, short.max_value)) ); messagelbl1.seticon(new imageicon(new url(userimageurl))); userimagelbl1.settext("i'm good."); grouplayout jpanel1layout = new grouplayout(msgpanel1); msgpanel1.setlayout(jpanel1layout); jpanel1layout.sethorizontalgroup( jpanel1layout.createparallelgroup(grouplayout.alignment.leading) .addgroup(grouplayout.alignment.trailing, jpanel1layout.createsequentialgroup() .addcontainergap(171, short.max_value) .addcomponent(userimagelbl1) .addgap(22, 22, 22)) ); jpanel1layout.setverticalgroup( jpanel1layout.createparallelgroup(grouplayout.alignment.leading) .addgroup(jpanel1layout.createsequentialgroup() .addcomponent(userimagelbl1) .addcontainergap(grouplayout.default_size, short.max_value)) ); grouplayout layout = new grouplayout(this); this.setlayout(layout); layout.sethorizontalgroup( layout.createparallelgroup(grouplayout.alignment.leading) .addgroup(layout.createsequentialgroup() .addcontainergap() .addcomponent(userimagelbl) .addgroup(layout.createparallelgroup(grouplayout.alignment.trailing) .addcomponent(msgpanel1, grouplayout.default_size, grouplayout.default_size, short.max_value) .addcomponent(msgpanel, grouplayout.default_size, grouplayout.default_size, short.max_value)) .addcomponent(messagelbl1) .addcontainergap()) ); layout.setverticalgroup( layout.createparallelgroup(grouplayout.alignment.leading) .addgroup(layout.createsequentialgroup() .addcontainergap() .addgroup(layout.createparallelgroup(grouplayout.alignment.leading) .addcomponent(userimagelbl) .addcomponent(msgpanel, grouplayout.preferred_size, grouplayout.default_size, grouplayout.preferred_size)) .addgap(18, 18, 18) .addgroup(layout.createparallelgroup(grouplayout.alignment.leading) .addcomponent(messagelbl1) .addcomponent(msgpanel1, grouplayout.preferred_size, grouplayout.default_size, grouplayout.preferred_size)) .addcontainergap(22, short.max_value)) ); } public static void main(string[] args) { swingutilities.invokelater(new runnable() { public void run() { try { joptionpane.showmessagedialog(null, new testpanel()); } catch (headlessexception e) { e.printstacktrace(); } catch (malformedurlexception e) { e.printstacktrace(); } } }); } } here output of code https://web.archive.org/web/20131031212512/http://harryjoy.files.wordpress.com/2012/07/chatbubble1.png
help how use background styles in project. want use in jframe , chatting viber,facebook,tango...
jtextarea meant enter , present plain text.
the settings applied single character applies whole of jtextarea.
you can use jtextpane or jeditorpane write colored text.
for more info on how enter colored text in jtextpane can see example here.
to use jeditorpane use example here.
i go jtextpane solutions because simpler.
hope help
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