109 lines
3.3 KiB
Java
109 lines
3.3 KiB
Java
/*
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* Copyright (c) 2017, 7u83 <7u83@mail.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package chart.painter;
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import sesim.ChartDef;
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import sesim.ChartPanel;
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import java.awt.Dimension;
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import java.awt.Graphics2D;
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import sesim.ChartPainterInterface;
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import sesim.MinMax;
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import sesim.OHLCData;
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/**
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*
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* @author 7u83 <7u83@mail.ru>
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*/
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abstract public class ChartPainter implements ChartPainterInterface{
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protected int em_size;
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/* public abstract interface DataProvider {
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abstract OHLCData get();
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}
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DataProvider dataProvider = null;
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public void setDataProvider(DataProvider dataProvider) {
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this.dataProvider = dataProvider;
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}
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*/
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/**
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* Init method scould be called before painting the chart
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*
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* @param g Graphics context
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*/
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protected final void init(Graphics2D g) {
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// Calculate the number of pixels for 1 em
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em_size = g.getFontMetrics().stringWidth("M");
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}
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protected float y_scaling;
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protected int y_height;
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protected float y_min;
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float getY(float y) {
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//c_yscaling = ctx.rect.height / c_mm.getDiff();
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// float ys = dim.height / mm.getDiff();
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/* if (minmax.isLog()) {
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// return rect.height + rect.y - ((float) Math.log(y) - c_mm.getMin()) * ys;
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}
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*/
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// return (dim.height - ((y - minmax.getMin()) * y_scaling));
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return (y_height - ((y - y_min) * y_scaling));
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}
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double getValAtY(float y) {
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float val = 0;
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/* if (c_mm.isLog()) {
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float ys = rect.height / c_mm.getDiff();
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return Math.exp((rect.height + rect.y) / ys + c_mm.getMin() - y / ys);
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}
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*/
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return (-(y - y_height)) / y_scaling + y_min;
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}
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void initGetY(MinMax minmax, Dimension dim) {
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y_height = dim.height;
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y_scaling = dim.height / minmax.getDiff();
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y_min = minmax.getMin();
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}
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abstract public void drawChart(Graphics2D g, ChartPanel p, ChartDef def);
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}
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