85 lines
3.2 KiB
Java
85 lines
3.2 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015-2021 MINRES Technologies GmbH and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* MINRES Technologies GmbH - initial API and implementation
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*******************************************************************************/
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package com.minres.scviewer.database.ui.swt.internal;
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import javax.swing.JPanel;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.graphics.Color;
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import org.eclipse.swt.graphics.FontData;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.graphics.Rectangle;
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import com.minres.scviewer.database.ui.TrackEntry;
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import com.minres.scviewer.database.ui.WaveformColors;
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public class EmptyPainter extends TrackPainter {
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/**
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*
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*/
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private final WaveformCanvas waveCanvas;
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private static final JPanel DUMMY_PANEL = new JPanel();
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public EmptyPainter(WaveformCanvas txDisplay, boolean even, TrackEntry trackEntry) {
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super(trackEntry, even);
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this.waveCanvas = txDisplay;
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}
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public void paintArea(Projection proj, Rectangle area) {
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Color bgColor = trackEntry.selected?this.waveCanvas.styleProvider.getColor(WaveformColors.TRACK_BG_HIGHLITE):this.waveCanvas.styleProvider.getColor(even ? WaveformColors.TRACK_BG_EVEN : WaveformColors.TRACK_BG_ODD);
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GC gc = proj.getGC();
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proj.setBackground(bgColor);
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proj.setFillRule(SWT.FILL_EVEN_ODD);
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proj.fillRectangle(area);
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Color drawColor = this.waveCanvas.styleProvider.getColor(WaveformColors.SEPARATOR);
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int trackHeight=trackEntry.height;
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int txBase=trackHeight*2/5;
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int txHeight=trackHeight/5;
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proj.setBackground(drawColor);
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proj.fillRectangle(new Rectangle(area.x, area.y+txBase, area.width, txHeight));
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String label = trackEntry.waveform.getName();
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if(label.length()>0) {
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Color textColor=waveCanvas.styleProvider.getColor(WaveformColors.SIGNAL_TEXT);
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FontData fd = gc.getFont().getFontData()[0];
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int height = gc.getDevice().getDPI().y * fd.getHeight() / 72;
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java.awt.Font tmpAwtFont = new java.awt.Font(fd.getName(), fd.getStyle(), height);
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int width = DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(label);
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int xBegin = (area.width-width)/2-5;
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xBegin = xBegin<0?0:xBegin;
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int xEnd = (area.width+width)/2+5;
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xEnd = xEnd>area.width?area.width:xEnd;
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int yOffsetT = this.waveCanvas.styleProvider.getTrackHeight() / 5 + area.y;
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int yOffsetM = this.waveCanvas.styleProvider.getTrackHeight() / 2 + area.y;
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int yOffsetB = 4 * this.waveCanvas.styleProvider.getTrackHeight() / 5 + area.y;
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int[] points = {
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xBegin, yOffsetM,
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xBegin + 1, yOffsetT,
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xEnd - 1, yOffsetT,
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xEnd, yOffsetM,
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xEnd - 1, yOffsetB,
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xBegin + 1, yOffsetB
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};
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gc.setBackground(bgColor);
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gc.fillPolygon(points);
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gc.setForeground(drawColor);
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gc.drawPolygon(points);
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Rectangle old = gc.getClipping();
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gc.setForeground(textColor);
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gc.setClipping(xBegin + 3, yOffsetT, xEnd - xBegin - 5, yOffsetB - yOffsetT);
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gc.drawText(label, xBegin + 3, yOffsetM - height / 2 - 1);
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gc.setClipping(old);
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}
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}
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}
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