eu.hansolo.medusa.skins.SimpleSectionSkin Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of Medusa Show documentation
Show all versions of Medusa Show documentation
Medusa is a JavaFX 8 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.Gauge.ScaleDirection;
import eu.hansolo.medusa.Section;
import eu.hansolo.medusa.tools.Helper;
import java.util.List;
import javafx.beans.InvalidationListener;
import javafx.scene.CacheHint;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
import javafx.scene.shape.StrokeLineCap;
import javafx.scene.text.Text;
import static eu.hansolo.medusa.tools.Helper.formatNumber;
/**
* Created by hansolo on 25.07.16.
*/
public class SimpleSectionSkin extends GaugeSkinBase {
private static final double ANGLE_RANGE = 300;
private double size;
private Canvas sectionCanvas;
private GraphicsContext sectionCtx;
private Arc barBackground;
private Arc bar;
private Text titleText;
private Text valueText;
private Text unitText;
private Pane pane;
private List sections;
private InvalidationListener decimalListener;
private InvalidationListener currentValueListener;
// ******************** Constructors **************************************
public SimpleSectionSkin(Gauge gauge) {
super(gauge);
if (gauge.isAutoScale()) gauge.calcAutoScale();
sections = gauge.getSections();
decimalListener = o -> handleEvents("DECIMALS");
currentValueListener = o -> setBar(gauge.getCurrentValue());
initGraphics();
registerListeners();
setBar(gauge.getCurrentValue());
}
// ******************** Initialization ************************************
private void initGraphics() {
// Set initial size
if (Double.compare(gauge.getPrefWidth(), 0.0) <= 0 || Double.compare(gauge.getPrefHeight(), 0.0) <= 0 ||
Double.compare(gauge.getWidth(), 0.0) <= 0 || Double.compare(gauge.getHeight(), 0.0) <= 0) {
if (gauge.getPrefWidth() > 0 && gauge.getPrefHeight() > 0) {
gauge.setPrefSize(gauge.getPrefWidth(), gauge.getPrefHeight());
} else {
gauge.setPrefSize(PREFERRED_WIDTH, PREFERRED_HEIGHT);
}
}
sectionCanvas = new Canvas(PREFERRED_WIDTH, PREFERRED_HEIGHT);
sectionCtx = sectionCanvas.getGraphicsContext2D();
barBackground = new Arc(PREFERRED_WIDTH * 0.5, PREFERRED_HEIGHT * 0.5, PREFERRED_WIDTH * 0.4, PREFERRED_HEIGHT * 0.4, gauge.getStartAngle() + 90, -ANGLE_RANGE);
barBackground.setType(ArcType.OPEN);
barBackground.setStroke(gauge.getBarBackgroundColor());
barBackground.setStrokeWidth(PREFERRED_WIDTH * 0.125);
barBackground.setStrokeLineCap(StrokeLineCap.BUTT);
barBackground.setFill(null);
bar = new Arc(PREFERRED_WIDTH * 0.5, PREFERRED_HEIGHT * 0.5, PREFERRED_WIDTH * 0.4, PREFERRED_HEIGHT * 0.4, gauge.getStartAngle() + 90, 0);
bar.setType(ArcType.OPEN);
bar.setStroke(gauge.getBarColor());
bar.setStrokeWidth(PREFERRED_WIDTH * 0.125);
bar.setStrokeLineCap(StrokeLineCap.BUTT);
bar.setFill(null);
titleText = new Text(gauge.getTitle());
titleText.setFill(gauge.getTitleColor());
Helper.enableNode(titleText, !gauge.getTitle().isEmpty());
valueText = new Text();
valueText.setStroke(null);
valueText.setFill(gauge.getValueColor());
Helper.enableNode(valueText, gauge.isValueVisible());
unitText = new Text();
unitText.setStroke(null);
unitText.setFill(gauge.getUnitColor());
Helper.enableNode(unitText, gauge.isValueVisible() && !gauge.getUnit().isEmpty());
pane = new Pane(barBackground, sectionCanvas, titleText, valueText, unitText, bar);
getChildren().setAll(pane);
}
@Override protected void registerListeners() {
super.registerListeners();
gauge.decimalsProperty().addListener(decimalListener);
gauge.currentValueProperty().addListener(currentValueListener);
}
// ******************** Methods *******************************************
@Override protected void handleEvents(final String EVENT_TYPE) {
super.handleEvents(EVENT_TYPE);
if ("VISIBILITY".equals(EVENT_TYPE)) {
Helper.enableNode(valueText, gauge.isValueVisible());
Helper.enableNode(titleText, !gauge.getTitle().isEmpty());
Helper.enableNode(unitText, gauge.isValueVisible() && !gauge.getUnit().isEmpty());
} else if ("SECTION".equals(EVENT_TYPE)) {
sections = gauge.getSections();
resize();
} else if ("RECALC".equals(EVENT_TYPE)) {
redraw();
setBar(gauge.getCurrentValue());
}
}
@Override public void dispose() {
gauge.decimalsProperty().removeListener(decimalListener);
gauge.currentValueProperty().removeListener(currentValueListener);
super.dispose();
}
// ******************** Canvas ********************************************
private void setBar( final double VALUE ) {
double barLength = 0;
double barStart = 0;
double min = gauge.getMinValue();
double max = gauge.getMaxValue();
double step = gauge.getAngleStep();
double clampedValue = Helper.clamp(min, max, VALUE);
if (gauge.isStartFromZero()) {
if ( ( VALUE > min || min < 0 ) && ( VALUE < max || max > 0 ) ) {
if ( max < 0 ) {
barStart = gauge.getStartAngle() + 90 - gauge.getAngleRange();
barLength = ( max - clampedValue ) * step;
} else if ( min > 0 ) {
barStart = gauge.getStartAngle() + 90;
barLength = ( min - clampedValue ) * step;
} else {
barStart = gauge.getStartAngle() + 90 + min * step;
barLength = - clampedValue * step;
}
}
} else {
barStart = gauge.getStartAngle() + 90;
barLength = ( min - clampedValue ) * step;
}
bar.setStartAngle(barStart);
bar.setLength(barLength);
bar.setStroke(gauge.getBarColor());
if (gauge.getSectionsVisible() && !sections.isEmpty()) {
for ( Section section : sections ) {
if ( section.contains(VALUE) ) {
bar.setStroke(section.getColor());
break;
}
}
}
valueText.setText(formatNumber(gauge.getLocale(), gauge.getFormatString(), gauge.getDecimals(), VALUE));
valueText.setLayoutX((size - valueText.getLayoutBounds().getWidth()) * 0.5);
}
private void drawBackground() {
sectionCanvas.setCache(false);
sectionCtx.setLineCap(StrokeLineCap.BUTT);
sectionCtx.clearRect(0, 0, size, size);
if (gauge.getSectionsVisible() && !sections.isEmpty()) {
double xy = 0.012 * size;
double wh = size * 0.976;
double minValue = gauge.getMinValue();
double maxValue = gauge.getMaxValue();
double angleStep = gauge.getAngleStep();
sectionCtx.setLineWidth(size * 0.025);
sectionCtx.setLineCap(StrokeLineCap.BUTT);
for (int i = 0; i < sections.size(); i++) {
Section section = sections.get(i);
double sectionStartAngle;
if (Double.compare(section.getStart(), maxValue) <= 0 && Double.compare(section.getStop(), minValue) >= 0) {
if (Double.compare(section.getStart(), minValue) < 0 && Double.compare(section.getStop(), maxValue) < 0) {
sectionStartAngle = 0;
} else {
sectionStartAngle = ScaleDirection.CLOCKWISE == gauge.getScaleDirection() ? (section.getStart() - minValue) * angleStep : -(section.getStart() - minValue) * angleStep;
}
double sectionAngleExtend;
if (Double.compare(section.getStop(), maxValue) > 0) {
sectionAngleExtend = ScaleDirection.CLOCKWISE == gauge.getScaleDirection() ? (maxValue - section.getStart()) * angleStep : -(maxValue - section.getStart()) * angleStep;
} else if (Double.compare(section.getStart(), minValue) < 0) {
sectionAngleExtend = ScaleDirection.CLOCKWISE == gauge.getScaleDirection() ? (section.getStop() - minValue) * gauge.getAngleStep() : -(section.getStop() - minValue) * angleStep;
} else {
sectionAngleExtend = ScaleDirection.CLOCKWISE == gauge.getScaleDirection() ? (section.getStop() - section.getStart()) * angleStep : -(section.getStop() - section.getStart()) * angleStep;
}
sectionCtx.save();
sectionCtx.setStroke(section.getColor());
sectionCtx.strokeArc(xy, xy, wh, wh, -(120 + sectionStartAngle), -sectionAngleExtend, ArcType.OPEN);
sectionCtx.restore();
}
}
}
sectionCanvas.setCache(true);
sectionCanvas.setCacheHint(CacheHint.QUALITY);
barBackground.setStroke(gauge.getBarBackgroundColor());
}
// ******************** Resizing ******************************************
private void resizeValueText() {
double maxWidth = size * 0.86466165;
double fontFactor = -0.035 * ( Math.max(1, gauge.getDecimals() ) - 1 ) + 0.2556391;
double fontSize = size * fontFactor;
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 * 0.35;
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);
titleText.setFill(Color.RED);
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);
}
@Override protected void resize() {
double width = gauge.getWidth() - gauge.getInsets().getLeft() - gauge.getInsets().getRight();
double height = gauge.getHeight() - gauge.getInsets().getTop() - gauge.getInsets().getBottom();
size = width < height ? width : height;
if (width > 0 && height > 0) {
pane.setMaxSize(size, size);
pane.setPrefSize(size, size);
pane.relocate((gauge.getWidth() - size) * 0.5, (gauge.getHeight() - size) * 0.5);
sectionCanvas.setWidth(size);
sectionCanvas.setHeight(size);
//barBackground.setStartAngle(gauge.getStartAngle() + 90);
barBackground.setCenterX(size * 0.5);
barBackground.setCenterY(size * 0.5);
barBackground.setRadiusX(size * 0.4);
barBackground.setRadiusY(size * 0.4);
barBackground.setStrokeWidth(size * 0.125);
bar.setCenterX(size * 0.5);
bar.setCenterY(size * 0.5);
bar.setRadiusX(size * 0.4);
bar.setRadiusY(size * 0.4);
bar.setStrokeWidth(size * 0.125);
redraw();
}
}
@Override protected void redraw() {
drawBackground();
setBar(gauge.getCurrentValue());
resizeValueText();
titleText.setText(gauge.getTitle());
unitText.setText(gauge.getUnit());
resizeStaticText();
titleText.setFill(gauge.getTitleColor());
valueText.setFill(gauge.getValueColor());
unitText.setFill(gauge.getUnitColor());
}
}