java - How can I add to or change a label on a JMenuItem? -
i need add label on right hand side of jmenuitem, labels shown below:
i have application uses ctrl++ , ctrl+- zoom image. however, + key default (without shift) = key. when try adding accelerators these menu items, ctrl+- shortcut label displays "ctrl+minus" (i prefer "ctrl -") , ctrl++ shortcut label displays "ctrl+equals" (even worse - in interest of user experience, prefer "ctrl +"):
menubar_view_zoomin.setaccelerator(keystroke.getkeystroke(keyevent.vk_equals, actionevent.ctrl_mask)); 
i want ctrl++ display "ctrl +" , ctrl+- display "ctrl -". how can done?
not answer, need search
paint() heavy, paintcomponent() lightweight jpopup, jmenu (for custom painting can switch isheavyweight...)
overlay jlabel container (few question jtable @guillaume polet , @robin)
create own jmenu/jpopup (see comment question)
import java.awt.color; import java.awt.component; import java.awt.dimension; import java.awt.flowlayout; import java.awt.graphics; import java.awt.insets; import java.awt.event.actionevent; import java.awt.event.actionlistener; import java.awt.event.windowadapter; import java.awt.event.windowevent; import javax.swing.icon; import javax.swing.jbutton; import javax.swing.jcombobox; import javax.swing.jcomponent; import javax.swing.jframe; import javax.swing.jmenu; import javax.swing.jmenubar; import javax.swing.jmenuitem; import javax.swing.jpanel; import javax.swing.swingconstants; import javax.swing.uimanager; import javax.swing.border.etchedborder; import javax.swing.border.titledborder; import javax.swing.plaf.basic.basicarrowbutton; public class comboboxmenuexample extends jframe { public comboboxmenuexample() { super("comboboxmenu example"); string[] itemstr = {"name", "red", "blue", "number", "255,0,0", "0,0,255", /*separator*/ "system", "control", "controlhighlight", "controlshadow", "text"}; jmenuitem[] menuitems = new jmenuitem[7]; menuitems[0] = new jmenuitem(itemstr[1]); menuitems[1] = new jmenuitem(itemstr[2]); menuitems[2] = new jmenuitem(itemstr[4]); menuitems[3] = new jmenuitem(itemstr[5]); menuitems[4] = new jmenuitem(itemstr[8]); menuitems[5] = new jmenuitem(itemstr[9]); menuitems[6] = new jmenuitem(itemstr[10]); jmenu[] menus = new jmenu[4]; menus[0] = new jmenu(itemstr[0]); menus[1] = new jmenu(itemstr[3]); menus[2] = new jmenu(itemstr[6]); menus[3] = new jmenu(itemstr[7]); menus[0].add(menuitems[0]); menus[0].add(menuitems[1]); menus[1].add(menuitems[2]); menus[1].add(menuitems[3]); menus[3].add(menuitems[4]); menus[3].add(menuitems[5]); menus[2].add(menus[3]); menus[2].add(menuitems[6]); jmenu menu = combomenubar.createmenu(menuitems[0].gettext()); menu.add(menus[0]); menu.add(menus[1]); menu.addseparator(); menu.add(menus[2]); combomenubar combomenu = new combomenubar(menu); jcombobox combo = new jcombobox(); combo.additem(itemstr[1]); combo.additem(itemstr[2]); combo.additem(itemstr[4]); combo.additem(itemstr[5]); combo.additem(itemstr[8]); combo.additem(itemstr[9]); combo.additem(itemstr[10]); getcontentpane().setlayout(new flowlayout()); getcontentpane().add(new combopanel("fake combobox", combomenu)); getcontentpane().add(new combopanel("combobox", combo)); } class combopanel extends jpanel { combopanel(string title, jcomponent c) { setlayout(new flowlayout()); setborder(new titledborder(title)); add(c); } } public static void main(string args[]) { try { uimanager.setlookandfeel("com.sun.java.swing.plaf.windows.windowslookandfeel"); } catch (exception evt) { } comboboxmenuexample frame = new comboboxmenuexample(); frame.addwindowlistener(new windowadapter() { @override public void windowclosing(windowevent e) { system.exit(0); } }); frame.setsize(370, 100); frame.setvisible(true); } } class combomenubar extends jmenubar { jmenu menu; dimension preferredsize; public combomenubar(jmenu menu) { this.menu = menu; color color = uimanager.getcolor("menu.selectionbackground"); uimanager.put("menu.selectionbackground", uimanager.getcolor("menu.background")); uimanager.put("menu.selectionbackground", color); menu.updateui(); menuitemlistener listener = new menuitemlistener(); setlistener(menu, listener); add(menu); } class menuitemlistener implements actionlistener { @override public void actionperformed(actionevent e) { jmenuitem item = (jmenuitem) e.getsource(); menu.settext(item.gettext()); menu.requestfocus(); } } private void setlistener(jmenuitem item, actionlistener listener) { if (item instanceof jmenu) { jmenu menu1 = (jmenu) item; int n = menu1.getitemcount(); (int = 0; < n; i++) { setlistener(menu1.getitem(i), listener); } } else if (item != null) { // null means separator item.addactionlistener(listener); } } public string getselecteditem() { return menu.gettext(); } @override public void setpreferredsize(dimension size) { preferredsize = size; } @override public dimension getpreferredsize() { if (preferredsize == null) { dimension sd = super.getpreferredsize(); dimension menud = getitemsize(menu); insets margin = menu.getmargin(); dimension retd = new dimension(menud.width, margin.top + margin.bottom + menud.height); menu.setpreferredsize(retd); preferredsize = retd; } return preferredsize; } private dimension getitemsize(jmenu menu) { dimension d = new dimension(0, 0); int n = menu.getitemcount(); (int = 0; < n; i++) { dimension itemd; jmenuitem item = menu.getitem(i); if (item instanceof jmenu) { itemd = getitemsize((jmenu) item); } else if (item != null) { itemd = item.getpreferredsize(); } else { itemd = new dimension(0, 0); // separator } d.width = math.max(d.width, itemd.width); d.height = math.max(d.height, itemd.height); } return d; } public static class combomenu extends jmenu { arrowicon iconrenderer; public combomenu(string label) { super(label); iconrenderer = new arrowicon(swingconstants.south, true); setborder(new etchedborder()); seticon(new blankicon(null, 11)); sethorizontaltextposition(jbutton.left); setfocuspainted(true); } @override public void paintcomponent(graphics g) { super.paintcomponent(g); dimension d = this.getpreferredsize(); int x = math.max(0, d.width - iconrenderer.geticonwidth() - 3); int y = math.max(0, (d.height - iconrenderer.geticonheight()) / 2 - 2); iconrenderer.painticon(this, g, x, y); } } public static jmenu createmenu(string label) { return new combomenu(label); } } class arrowicon implements icon, swingconstants { private static final int default_size = 11; //private static final int default_size = 5; private int size; private int iconsize; private int direction; private boolean isenabled; private basicarrowbutton iconrenderer; public arrowicon(int direction, boolean ispressedview) { this(default_size, direction, ispressedview); } public arrowicon(int iconsize, int direction, boolean isenabled) { this.size = iconsize / 2; this.iconsize = iconsize; this.direction = direction; this.isenabled = isenabled; iconrenderer = new basicarrowbutton(direction); } @override public void painticon(component c, graphics g, int x, int y) { iconrenderer.painttriangle(g, x, y, size, direction, isenabled); } @override public int geticonwidth() { //int retcode; switch (direction) { case north: case south: return iconsize; case east: case west: return size; } return iconsize; } @override public int geticonheight() { switch (direction) { case north: case south: return size; case east: case west: return iconsize; } return size; } } class blankicon implements icon { private color fillcolor; private int size; public blankicon() { this(null, 11); } public blankicon(color color, int size) { //uimanager.getcolor("control") //uimanager.getcolor("controlshadow") fillcolor = color; this.size = size; } @override public void painticon(component c, graphics g, int x, int y) { if (fillcolor != null) { g.setcolor(fillcolor); g.drawrect(x, y, size - 1, size - 1); } } @override public int geticonwidth() { return size; } @override public int geticonheight() { return size; } } 
Comments
Post a Comment