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Progress Bar
It is a bar that can demonstrate the progress of a particular request or a loading of an event. You can have text that indicates the current status of the ProgressBar and can be used both horizontally and vertically.
ProgressBarSample
import totalcross.sys.Convert;
import totalcross.sys.Settings;
import totalcross.sys.Vm;
import totalcross.ui.Container;
import totalcross.ui.Control;
import totalcross.ui.MainWindow;
import totalcross.ui.ProgressBar;
import totalcross.ui.dialog.MessageBox;
import totalcross.ui.gfx.Color;
import totalcross.util.UnitsConverter;
public class ProgressBarSample extends MainWindow {
ProgressBar pbHYellow, pbVRed, pbVCyan, pbHRed, pbHPurple;
int gap = UnitsConverter.toPixels(DP + 8);
public ProgressBarSample() {
setUIStyle(Settings.MATERIAL_UI);
}
@Override
public void initUI() {
try {
super.initUI();
Container sc = new Container();
sc.setInsets(gap, gap, gap, gap);
add(sc, LEFT, TOP, FILL, FILL);
pbHPurple = new ProgressBar();
pbHPurple.max = 50;
pbHPurple.highlight = true;
pbHPurple.suffix = " of " + pbHPurple.max;
pbHPurple.textColor = 0xAAAA;
pbHPurple.drawText = true;
sc.add(pbHPurple, LEFT, TOP, FILL, PREFERRED);
// endless ProgressBarSample
pbHYellow = new ProgressBar();
pbHYellow.max = width / 4; // max-min = width of the bar
pbHYellow.setBackColor(Color.YELLOW);
pbHYellow.setForeColor(Color.ORANGE);
pbHYellow.prefix = "Loading, please wait...";
pbHYellow.drawText = true;
sc.add(pbHYellow, LEFT, AFTER + gap, FILL, PREFERRED);
pbHRed = new ProgressBar();
pbHRed.max = 50;
pbHRed.setEndless();
pbHRed.setBackForeColors(Color.DARK, Color.RED);
sc.add(pbHRed, LEFT, AFTER + gap, FILL, FONTSIZE + 50);
final int max = Settings.onJavaSE ? 2000 : 200;
// vertical ones
pbVCyan = new ProgressBar();
pbVCyan.vertical = true;
pbVCyan.max = max;
pbVCyan.textColor = Color.BLUE;
pbVCyan.setBackColor(Color.CYAN);
pbVCyan.setForeColor(Color.GREEN);
sc.add(pbVCyan, RIGHT, AFTER + gap, PREFERRED, FILL);
pbVRed = new ProgressBar();
pbVRed.vertical = true;
pbVRed.max = 50;
pbVRed.setBackForeColors(Color.RED, Color.DARK);
sc.add(pbVRed, BEFORE - gap, SAME, FONTSIZE + 50, SAME);
onSwapFinished();
} catch (Exception ee) {
MessageBox.showException(ee, true);
}
}
@Override
public void onSwapFinished() {
final int ini = Vm.getTimeStamp();
repaintNow();
// runs the bench test
int max = pbVCyan.max;
for (int i = max; --i >= 0;) {
int v = pbHPurple.getValue();
v = (v + 1) % (pbHPurple.max + 1);
Control.enableUpdateScreen = false; // since each setValue below updates the screen, we disable it to let it paint all at once at the end
pbHPurple.setValue(v);
pbVCyan.setValue(i);
pbHYellow.setValue(5); // increment value
pbHRed.setValue(v);
Control.enableUpdateScreen = true;
pbVRed.setValue(v);
if (Settings.onJavaSE) {
Vm.sleep(20);
}
}
}
}
Type | Name | Description |
int | max | Progress Bar maximum value. |
int | value | Current value of progress Bar. |
String | prefix | It is the text that appears to the left of the value, remembering that the text output is prefix + value + sufix |
String | suffix | It is the text that appears to the right of the value, remembering that the text output is prefix + value + suffix |
boolean | drawText | It will indicate if the text will be displayed in progress bar or not, by default it comes as false. |
boolean | drawValue | It will indicate if the value will be displayed in the progress bar. |
Type | Name | Description |
Constructor | ProgressBar() | Instances a ProgressBar with the minimum values 0 and maximum value 100. |
Constructor | ProgressBar(int min, int max) | Instances a ProgressBar with the values passed in the variables min and max. |
Void | setEndless() | Use in a horizontal ProgressBar to leave it without end. |
Void | setValue(int n)
| Updates the current progressbar value and draws the ProgressBar with the updated state. |
Void | setValue(int value, String prefix, String suffix) | Updates the current value of progressBar and draws it again with the updated state and with texts before the value and after the value. |
- You can check the example contained in the SDK, in tc.samples.api.ui ProgressBarSample.
Last modified 4yr ago