Aligned Labels

Overview

Aligned Label is a Container used to align all controls to the maximum width of a set of labels.

In Totalcross this component is called AlignedLabelContainer.

Source Code

AlignedLabelsSample.java
import totalcross.ui.AlignedLabelsContainer;
import totalcross.ui.Button;
import totalcross.ui.ComboBox;
import totalcross.ui.Edit;
import totalcross.ui.Label;
import totalcross.ui.ListBox;
import totalcross.ui.ScrollContainer;
import totalcross.util.UnitsConverter;
public class extends ScrollContainer {
private int gap = UnitsConverter.toPixels(10 + DP);
private boolean canInsert = true;
private ListBox lb;
private Label output;
@Override
public void initUI() {
uiAdjustmentsBasedOnFontHeightIsSupported = false;
setBackForeColors(0xF7F7F7, 0x000000);
setScrollBars(false, true);
String[] labels = { "Name", "Born date", "Telephone", "Address", "City", "Country" };
Edit edits[] = new Edit[5];
edits[0].transparentBackground = true;
Edit.useNativeNumericPad = true;
for (int i = 0; i < edits.length; i++) {
switch (i) {
case 1:
edits[i] = new Edit("99/99/9999");
edits[i].setMode(Edit.NORMAL, true);
edits[i].setValidChars(Edit.numbersSet);
edits[i].setKeyboard(Edit.KBD_NUMERIC);
break;
case 2:
edits[i] = new Edit("(99)9999-99999");
edits[i].setMode(Edit.NORMAL, true);
edits[i].setValidChars(Edit.numbersSet);
edits[i].setKeyboard(Edit.KBD_NUMERIC);
break;
default:
edits[i] = new Edit();
}
}
Label title = new Label("This is an AlignedLabelsContainer.\nAll the content will be automatically aligned.",
CENTER, 0, true);
title.autoSplit = true;
add(title, LEFT + gap, TOP + gap, FILL - gap, PREFERRED);
AlignedLabelsContainer alc = new AlignedLabelsContainer();
alc.uiAdjustmentsBasedOnFontHeightIsSupported = false;
alc.labelAlign = RIGHT;
alc.setInsets(gap, gap, 0, 0);
alc.setLabels(labels, edits[0].getPreferredHeight());
add(alc, LEFT, AFTER, FILL, PREFERRED);
int i;
for (i = 0; i < edits.length - 1; i++) {
alc.add(edits[i], LEFT + gap, alc.getLineY(i), FILL - gap, PREFERRED);
}
Button btnInsert = new Button("Insert data", (byte) 0);
btnInsert.setBackForeColors(0x4583d4, 0xFFFFFF);
alc.add(edits[edits.length - 1], LEFT + gap, alc.getLineY(i), edits[3].getWidth() / 2 - gap / 2, PREFERRED);
alc.add(btnInsert, RIGHT - gap, CENTER_OF, SAME, PREFERRED, edits[edits.length - 1]);
ComboBox cbCountry = new ComboBox(new String[] { "Brazil", "USA" });
alc.add(cbCountry, LEFT + gap, alc.getLineY(++i), SAME, PREFERRED, edits[edits.length - 1]);
Button btnClear = new Button("CLEAR DATA", (byte) 0);
alc.add(btnClear, RIGHT - gap, CENTER_OF, SAME, PREFERRED);
btnInsert.addPressListener(e -> {
if (canInsert) {
lb = new ListBox();
for (int j = 0; j < edits.length; j++)
lb.add(labels[j] + ": " + edits[j].getText());
if (cbCountry.getSelectedIndex() != -1)
lb.add("Country: " + cbCountry.getSelectedItem());
else
lb.add("Country: ");
output = new Label("OUTPUT:");
output.setFont(font.asBold());
add(output, CENTER, AFTER);
add(lb, CENTER, AFTER + gap, SCREENSIZE + 80, PREFERRED);
canInsert = false;
scrollToControl(lb);
} else {
lb.removeAll();
for (int j = 0; j < edits.length; j++)
lb.add(labels[j] + ": " + edits[j].getText());
if (cbCountry.getSelectedIndex() != -1)
lb.add("Country: " + cbCountry.getSelectedItem());
else
lb.add("Country: ");
}
// reposition(); reposition bugando o edit
});
btnClear.addPressListener(e -> {
// Cleaning the labels' content
for (Edit edit : edits)
edit.clear();
cbCountry.setSelectedIndex(-1);
if (!canInsert) {
// Cleaning the output
remove(lb);
remove(output);
canInsert = true;
}
});
}
}

Attributes

Type

Name

Description

Font

childrenFont

Set this member to the font you want to set to the controls that are added to this container

int[ ]

foreColors

Sets an array with the same number of labels and the colors you want to show for each label

int

labelAlign

The alignment of the labels

Methods

ype

Name

Description

Construtor

AlignedLabelsContainer( )

Creates a new AlignedLabelsContainer without labels

Construtor

AlignedLabelsContainer(String[] labels)

Creates a new AlignedLabelsContainer with the given labels

Construtor

AlignedLabelsContainer(String[] labels, int vgap)

Creates a new AlignedLabelsContainer with the given labels and a vertical gap between the labels

void

add(Control c)

Since this is an AlignedLabelsContainer, use this to add a label

int

getLineY(int line)

Given a line (staring from 0), returns the y position

void

setLabels(String[ ] labels, int vgap)

Sets the labels and the extra gap between rows (which may be 0)