eu.hansolo.medusa.skins.SimpleSectionSkin Maven / Gradle / Ivy
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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 javafx.geometry.Insets;
import javafx.scene.CacheHint;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
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.paint.Color;
import javafx.scene.paint.Paint;
import javafx.scene.shape.Arc;
import javafx.scene.shape.ArcType;
import javafx.scene.shape.StrokeLineCap;
import javafx.scene.text.Text;
import java.util.List;
/**
* Created by hansolo on 25.07.16.
*/
public class SimpleSectionSkin 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 = 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 String formatString;
// ******************** Constructors **************************************
public SimpleSectionSkin(Gauge gauge) {
super(gauge);
if (gauge.isAutoScale()) gauge.calcAutoScale();
formatString = new StringBuilder("%.").append(Integer.toString(gauge.getDecimals())).append("f").toString();
sections = gauge.getSections();
initGraphics();
registerListeners();
setBar(gauge.getCurrentValue());
}
// ******************** Initialization ************************************
private void initGraphics() {
// Set initial size
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(getSkinnable().getPrefWidth(), getSkinnable().getPrefHeight());
} else {
getSkinnable().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, getSkinnable().getStartAngle() + 150, ANGLE_RANGE);
barBackground.setType(ArcType.OPEN);
barBackground.setStroke(getSkinnable().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, getSkinnable().getStartAngle() + 90, 0);
bar.setType(ArcType.OPEN);
bar.setStroke(getSkinnable().getBarColor());
bar.setStrokeWidth(PREFERRED_WIDTH * 0.125);
bar.setStrokeLineCap(StrokeLineCap.BUTT);
bar.setFill(null);
titleText = new Text(getSkinnable().getTitle());
titleText.setFill(getSkinnable().getTitleColor());
Helper.enableNode(titleText, !getSkinnable().getTitle().isEmpty());
valueText = new Text();
valueText.setStroke(null);
valueText.setFill(getSkinnable().getValueColor());
Helper.enableNode(valueText, getSkinnable().isValueVisible());
unitText = new Text();
unitText.setStroke(null);
unitText.setFill(getSkinnable().getUnitColor());
Helper.enableNode(unitText, getSkinnable().isValueVisible() && !getSkinnable().getUnit().isEmpty());
pane = new Pane(barBackground, sectionCanvas, titleText, valueText, unitText, bar);
getChildren().setAll(pane);
}
private void registerListeners() {
getSkinnable().widthProperty().addListener(o -> handleEvents("RESIZE"));
getSkinnable().heightProperty().addListener(o -> handleEvents("RESIZE"));
getSkinnable().decimalsProperty().addListener(o -> handleEvents("DECIMALS"));
getSkinnable().setOnUpdate(e -> handleEvents(e.eventType.name()));
getSkinnable().currentValueProperty().addListener(o -> setBar(getSkinnable().getCurrentValue()));
getSkinnable().decimalsProperty().addListener(o -> handleEvents("DECIMALS"));
}
// ******************** Methods *******************************************
@Override protected double computeMinWidth(final double HEIGHT, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return MINIMUM_WIDTH; }
@Override protected double computeMinHeight(final double WIDTH, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return MINIMUM_HEIGHT; }
@Override protected double computePrefWidth(final double HEIGHT, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return super.computePrefWidth(HEIGHT, TOP, RIGHT, BOTTOM, LEFT); }
@Override protected double computePrefHeight(final double WIDTH, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return super.computePrefHeight(WIDTH, TOP, RIGHT, BOTTOM, LEFT); }
@Override protected double computeMaxWidth(final double HEIGHT, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return MAXIMUM_WIDTH; }
@Override protected double computeMaxHeight(final double WIDTH, final double TOP, final double RIGHT, final double BOTTOM, final double LEFT) { return MAXIMUM_HEIGHT; }
private void handleEvents(final String EVENT_TYPE) {
if ("VISIBILITY".equals(EVENT_TYPE)) {
Helper.enableNode(valueText, getSkinnable().isValueVisible());
Helper.enableNode(unitText, getSkinnable().isValueVisible() && !getSkinnable().getUnit().isEmpty());
} else if ("SECTIONS".equals(EVENT_TYPE)) {
sections = getSkinnable().getSections();
} else if ("RESIZE".equals(EVENT_TYPE)) {
resize();
redraw();
} else if ("REDRAW".equals(EVENT_TYPE)) {
redraw();
} else if ("RECALC".equals(EVENT_TYPE)) {
redraw();
setBar(getSkinnable().getCurrentValue());
} else if ("DECIMALS".equals(EVENT_TYPE)) {
formatString = new StringBuilder("%.").append(Integer.toString(getSkinnable().getDecimals())).append("f").toString();
}
}
// ******************** Canvas ********************************************
private void setBar(final double VALUE) {
bar.setStartAngle(getSkinnable().getStartAngle() + 90 + getSkinnable().getMinValue() * getSkinnable().getAngleStep());
if (getSkinnable().getMinValue() > 0) {
bar.setLength((getSkinnable().getMinValue() - VALUE) * getSkinnable().getAngleStep());
} else {
bar.setLength(-VALUE * getSkinnable().getAngleStep());
}
if (getSkinnable().getSectionsVisible() && !sections.isEmpty()) {
for (Section section : sections) {
if (section.contains(VALUE)) {
bar.setStroke(section.getColor());
break;
}
}
}
valueText.setText(String.format(getSkinnable().getLocale(), formatString, 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 (getSkinnable().getSectionsVisible() && !sections.isEmpty()) {
double xy = 0.012 * size;
double wh = size * 0.976;
double minValue = getSkinnable().getMinValue();
double maxValue = getSkinnable().getMaxValue();
double angleStep = getSkinnable().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 == getSkinnable().getScaleDirection() ? (section.getStart() - minValue) * angleStep : -(section.getStart() - minValue) * angleStep;
}
double sectionAngleExtend;
if (Double.compare(section.getStop(), maxValue) > 0) {
sectionAngleExtend = ScaleDirection.CLOCKWISE == getSkinnable().getScaleDirection() ? (maxValue - section.getStart()) * angleStep : -(maxValue - section.getStart()) * angleStep;
} else if (Double.compare(section.getStart(), minValue) < 0) {
sectionAngleExtend = ScaleDirection.CLOCKWISE == getSkinnable().getScaleDirection() ? (section.getStop() - minValue) * getSkinnable().getAngleStep() : -(section.getStop() - minValue) * angleStep;
} else {
sectionAngleExtend = ScaleDirection.CLOCKWISE == getSkinnable().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);
}
// ******************** 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 * 0.35;
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);
}
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.setPrefSize(size, size);
pane.relocate((getSkinnable().getWidth() - size) * 0.5, (getSkinnable().getHeight() - size) * 0.5);
sectionCanvas.setWidth(size);
sectionCanvas.setHeight(size);
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);
resizeValueText();
redraw();
}
}
private void redraw() {
drawBackground();
setBar(getSkinnable().getCurrentValue());
titleText.setText(getSkinnable().getTitle());
unitText.setText(getSkinnable().getUnit());
resizeStaticText();
titleText.setFill(getSkinnable().getTitleColor());
valueText.setFill(getSkinnable().getValueColor());
unitText.setFill(getSkinnable().getUnitColor());
}
}