eu.hansolo.medusa.skins.SlimSkin Maven / Gradle / Ivy
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Medusa is a JavaFX library containing gauges and clocks
/*
* Copyright (c) 2016 by Gerrit Grunwald
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package eu.hansolo.medusa.skins;
import eu.hansolo.medusa.Fonts;
import eu.hansolo.medusa.Gauge;
import eu.hansolo.medusa.Section;
import eu.hansolo.medusa.tools.Helper;
import javafx.geometry.Insets;
import javafx.scene.control.Skin;
import javafx.scene.control.SkinBase;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
import javafx.scene.shape.StrokeLineCap;
import javafx.scene.text.Text;
import java.util.List;
import java.util.Locale;
/**
* Created by hansolo on 13.01.16.
*/
public class SlimSkin extends SkinBase implements Skin {
private static final double PREFERRED_WIDTH = 250;
private static final double PREFERRED_HEIGHT = 250;
private static final double MINIMUM_WIDTH = 50;
private static final double MINIMUM_HEIGHT = 50;
private static final double MAXIMUM_WIDTH = 1024;
private static final double MAXIMUM_HEIGHT = 1024;
private static final double ANGLE_RANGE = 360;
private double size;
private Arc barBackground;
private Arc bar;
private Text titleText;
private Text valueText;
private Text unitText;
private Pane pane;
private double minValue;
private double range;
private double angleStep;
private boolean colorGradientEnabled;
private int noOfGradientStops;
private boolean sectionsVisible;
private List sections;
private String formatString;
// ******************** Constructors **************************************
public SlimSkin(Gauge gauge) {
super(gauge);
if (gauge.isAutoScale()) gauge.calcAutoScale();
minValue = gauge.getMinValue();
range = gauge.getRange();
angleStep = ANGLE_RANGE / range;
colorGradientEnabled = gauge.isGradientBarEnabled();
noOfGradientStops = gauge.getGradientBarStops().size();
sectionsVisible = gauge.getSectionsVisible();
sections = gauge.getSections();
formatString = new StringBuilder("%.").append(Integer.toString(gauge.getDecimals())).append("f").toString();
init();
initGraphics();
registerListeners();
setBar(gauge.getCurrentValue());
}
// ******************** Initialization ************************************
private void init() {
if (Double.compare(getSkinnable().getPrefWidth(), 0.0) <= 0 || Double.compare(getSkinnable().getPrefHeight(), 0.0) <= 0 ||
Double.compare(getSkinnable().getWidth(), 0.0) <= 0 || Double.compare(getSkinnable().getHeight(), 0.0) <= 0) {
if (getSkinnable().getPrefWidth() < 0 && getSkinnable().getPrefHeight() < 0) {
getSkinnable().setPrefSize(PREFERRED_WIDTH, PREFERRED_HEIGHT);
}
}
if (Double.compare(getSkinnable().getMinWidth(), 0.0) <= 0 || Double.compare(getSkinnable().getMinHeight(), 0.0) <= 0) {
getSkinnable().setMinSize(MINIMUM_WIDTH, MINIMUM_HEIGHT);
}
if (Double.compare(getSkinnable().getMaxWidth(), 0.0) <= 0 || Double.compare(getSkinnable().getMaxHeight(), 0.0) <= 0) {
getSkinnable().setMaxSize(MAXIMUM_WIDTH, MAXIMUM_HEIGHT);
}
}
private void initGraphics() {
barBackground = new Arc(PREFERRED_WIDTH * 0.5, PREFERRED_HEIGHT * 0.5, PREFERRED_WIDTH * 0.48590226, PREFERRED_HEIGHT * 0.48590226, 90, 360);
barBackground.setType(ArcType.OPEN);
barBackground.setStroke(getSkinnable().getBarBackgroundColor());
barBackground.setStrokeWidth(PREFERRED_WIDTH * 0.02819549 * 2);
barBackground.setStrokeLineCap(StrokeLineCap.ROUND);
barBackground.setFill(null);
bar = new Arc(PREFERRED_WIDTH * 0.5, PREFERRED_HEIGHT * 0.5, PREFERRED_WIDTH * 0.48590226, PREFERRED_HEIGHT * 0.48590226, 90, 0);
bar.setType(ArcType.OPEN);
bar.setStroke(getSkinnable().getBarColor());
bar.setStrokeWidth(PREFERRED_WIDTH * 0.02819549 * 2);
bar.setStrokeLineCap(StrokeLineCap.ROUND);
bar.setFill(null);
titleText = new Text(getSkinnable().getTitle());
titleText.setFill(getSkinnable().getTitleColor());
valueText = new Text(String.format(Locale.US, formatString, getSkinnable().getCurrentValue()));
valueText.setFill(getSkinnable().getValueColor());
unitText = new Text(getSkinnable().getUnit());
unitText.setFill(getSkinnable().getUnitColor());
pane = new Pane(barBackground, bar, titleText, valueText, unitText);
pane.setBorder(new Border(new BorderStroke(getSkinnable().getBorderPaint(), BorderStrokeStyle.SOLID, new CornerRadii(1024), new BorderWidths(getSkinnable().getBorderWidth()))));
pane.setBackground(new Background(new BackgroundFill(getSkinnable().getBackgroundPaint(), new CornerRadii(1024), Insets.EMPTY)));
getChildren().setAll(pane);
}
private void registerListeners() {
getSkinnable().widthProperty().addListener(o -> handleEvents("RESIZE"));
getSkinnable().heightProperty().addListener(o -> handleEvents("RESIZE"));
getSkinnable().setOnUpdate(e -> handleEvents(e.eventType.name()));
getSkinnable().currentValueProperty().addListener(o -> setBar(getSkinnable().getCurrentValue()));
}
// ******************** Methods *******************************************
private void handleEvents(final String EVENT_TYPE) {
if ("RESIZE".equals(EVENT_TYPE)) {
resize();
redraw();
} else if ("REDRAW".equals(EVENT_TYPE)) {
redraw();
} else if ("RECALC".equals(EVENT_TYPE)) {
minValue = getSkinnable().getMinValue();
range = getSkinnable().getRange();
angleStep = ANGLE_RANGE / range;
sections = getSkinnable().getSections();
redraw();
}
}
private void setBar(final double VALUE) {
if (minValue > 0) {
bar.setLength((minValue - VALUE) * angleStep);
} else {
bar.setLength(-VALUE * angleStep);
}
setBarColor(VALUE);
valueText.setText(String.format(Locale.US, formatString, VALUE));
resizeValueText();
}
private void setBarColor(final double VALUE) {
if (!sectionsVisible && !colorGradientEnabled) {
bar.setStroke(getSkinnable().getBarColor());
} else if (colorGradientEnabled && noOfGradientStops > 1) {
bar.setStroke(getSkinnable().getGradientLookup().getColorAt((VALUE - minValue) / range));
} else {
for (Section section : sections) {
if (section.contains(VALUE)) {
bar.setStroke(section.getColor());
break;
}
}
}
}
// ******************** Resizing ******************************************
private void resizeValueText() {
double maxWidth = size * 0.86466165;
double fontSize = size * 0.2556391;
valueText.setFont(Fonts.latoLight(fontSize));
if (valueText.getLayoutBounds().getWidth() > maxWidth) { Helper.adjustTextSize(valueText, maxWidth, fontSize); }
valueText.relocate((size - valueText.getLayoutBounds().getWidth()) * 0.5, (size - valueText.getLayoutBounds().getHeight()) * 0.5);
}
private void resizeStaticText() {
double maxWidth = size * 0.69548872;
double fontSize = size * 0.08082707;
titleText.setFont(Fonts.latoBold(fontSize));
if (titleText.getLayoutBounds().getWidth() > maxWidth) { Helper.adjustTextSize(titleText, maxWidth, fontSize); }
titleText.relocate((size - titleText.getLayoutBounds().getWidth()) * 0.5, size * 0.22180451);
unitText.setFont(Fonts.latoBold(fontSize));
if (unitText.getLayoutBounds().getWidth() > maxWidth) { Helper.adjustTextSize(unitText, maxWidth, fontSize); }
unitText.relocate((size - unitText.getLayoutBounds().getWidth()) * 0.5, size * 0.68984962);
}
private void resize() {
double width = getSkinnable().getWidth() - getSkinnable().getInsets().getLeft() - getSkinnable().getInsets().getRight();
double height = getSkinnable().getHeight() - getSkinnable().getInsets().getTop() - getSkinnable().getInsets().getBottom();
size = width < height ? width : height;
if (width > 0 && height > 0) {
pane.setMaxSize(size, size);
pane.relocate((width - size) * 0.5, (height - size) * 0.5);
barBackground.setCenterX(size * 0.5);
barBackground.setCenterY(size * 0.5);
barBackground.setRadiusX(size * 0.48590226);
barBackground.setRadiusY(size * 0.48590226);
barBackground.setStrokeWidth(size * 0.02819549);
bar.setCenterX(size * 0.5);
bar.setCenterY(size * 0.5);
bar.setRadiusX(size * 0.48590226);
bar.setRadiusY(size * 0.48590226);
bar.setStrokeWidth(size * 0.02819549);
resizeStaticText();
resizeValueText();
}
}
private void redraw() {
pane.setBorder(new Border(new BorderStroke(getSkinnable().getBorderPaint(), BorderStrokeStyle.SOLID, new CornerRadii(1024), new BorderWidths(getSkinnable().getBorderWidth() / PREFERRED_WIDTH * size))));
pane.setBackground(new Background(new BackgroundFill(getSkinnable().getBackgroundPaint(), new CornerRadii(1024), Insets.EMPTY)));
formatString = new StringBuilder("%.").append(Integer.toString(getSkinnable().getDecimals())).append("f").toString();
colorGradientEnabled = getSkinnable().isGradientBarEnabled();
noOfGradientStops = getSkinnable().getGradientBarStops().size();
sectionsVisible = getSkinnable().getSectionsVisible();
titleText.setText(getSkinnable().getTitle());
unitText.setText(getSkinnable().getUnit());
resizeStaticText();
barBackground.setStroke(getSkinnable().getBarBackgroundColor());
setBarColor(getSkinnable().getCurrentValue());
titleText.setFill(getSkinnable().getTitleColor());
valueText.setFill(getSkinnable().getValueColor());
unitText.setFill(getSkinnable().getUnitColor());
}
}