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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/PrintFigureOperation.d @ 104:88652073d1c2

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More work on icu
author Frank Benoit <benoit@tionex.de>
date Sat, 02 May 2009 11:27:24 +0200
parents bc29606a740c
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Sven M�ller - Added tiling support
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11 * Port to the D programming language:
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12 * Frank Benoit <benoit@tionex.de>
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13 *******************************************************************************/
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14 module org.eclipse.draw2d.PrintFigureOperation;
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15
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16 import java.lang.all;
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19
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20 import org.eclipse.swt.SWT;
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21 import org.eclipse.swt.graphics.Color;
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22 import org.eclipse.swt.printing.Printer;
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23 import org.eclipse.swt.widgets.Display;
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24 import org.eclipse.draw2d.geometry.Rectangle;
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25 import org.eclipse.draw2d.IFigure;
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26 import org.eclipse.draw2d.PrintOperation;
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27 import org.eclipse.draw2d.Graphics;
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28 import org.eclipse.draw2d.ColorConstants;
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29
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30 /**
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31 * Class responsible for printing Figures.
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32 *
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33 * @author Dan Lee
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34 * @author Eric Bordeau
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35 * @author Sven M�ller
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36 */
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37 public class PrintFigureOperation : PrintOperation {
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38
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39 /**
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40 * The default print mode. Prints at 100% scale and tiles horizontally and/or vertically,
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41 * if necessary.
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42 */
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43 public static const int TILE = 1;
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44 /**
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45 * A print mode that scales the printer graphics so that the entire printed image fits on
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46 * one page.
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47 */
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48 public static const int FIT_PAGE = 2;
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49 /**
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50 * A print mode that scales the printer graphics so that the width of the printed image
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51 * fits on one page and tiles vertically, if necessary.
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52 */
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53 public static const int FIT_WIDTH = 3;
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54 /**
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55 * A print mode that scales the printer graphics so that the height of the printed image
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56 * fits on one page and tiles horizontally, if necessary.
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57 */
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58 public static const int FIT_HEIGHT = 4;
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59
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60 private IFigure printSource;
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61 private Color oldBGColor;
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62 private int printMode = TILE;
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63
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64 /**
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65 * Constructor for PrintFigureOperation.
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66 * <p>
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67 * Note: Descendants must call setPrintSource(IFigure) to set the IFigure that is to be
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68 * printed.
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69 * @see org.eclipse.draw2d.PrintOperation#PrintOperation(Printer)
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70 */
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71 protected this(Printer p) {
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72 super(p);
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73 }
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74
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75 /**
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76 * Constructor for PrintFigureOperation.
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77 *
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78 * @param p Printer to print on
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79 * @param srcFigure Figure to print
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80 */
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81 public this(Printer p, IFigure srcFigure) {
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82 super(p);
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83 setPrintSource(srcFigure);
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84 }
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85
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86 /**
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87 * @return SWT.RIGHT_TO_LEFT if the print source is mirrored; SWT.LEFT_TO_RIGHT otherwise
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88 * @see org.eclipse.draw2d.PrintOperation#getGraphicsOrientation()
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89 */
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90 int getGraphicsOrientation() {
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91 return getPrintSource().isMirrored() ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT;
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92 }
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93
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94 /**
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95 * Returns the current print mode. The print mode is one of: {@link #FIT_HEIGHT},
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96 * {@link #FIT_PAGE}, or {@link #FIT_WIDTH}.
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97 * @return the print mode
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98 */
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99 protected int getPrintMode() {
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100 return printMode;
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101 }
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102
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103 /**
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104 * Returns the printSource.
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105 *
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106 * @return IFigure The source IFigure
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107 */
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108 protected IFigure getPrintSource() {
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109 return printSource;
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110 }
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111
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112 /**
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113 * @see org.eclipse.draw2d.PrintOperation#preparePrintSource()
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114 */
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115 protected void preparePrintSource() {
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116 oldBGColor = getPrintSource().getLocalBackgroundColor();
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117 getPrintSource().setBackgroundColor(ColorConstants.white);
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118 }
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119
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120 /**
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121 * Prints the pages based on the current print mode.
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122 * @see org.eclipse.draw2d.PrintOperation#printPages()
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123 */
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124 protected void printPages() {
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125 Graphics graphics = getFreshPrinterGraphics();
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126 IFigure figure = getPrintSource();
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127 setupPrinterGraphicsFor(graphics, figure);
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128 Rectangle bounds = figure.getBounds();
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129 int x = bounds.x, y = bounds.y;
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130 Rectangle clipRect = new Rectangle();
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131 while (y < bounds.y + bounds.height) {
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132 while (x < bounds.x + bounds.width) {
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133 graphics.pushState();
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134 getPrinter().startPage();
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135 graphics.translate(-x, -y);
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136 graphics.getClip(clipRect);
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137 clipRect.setLocation(x, y);
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138 graphics.clipRect(clipRect);
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139 figure.paint(graphics);
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140 getPrinter().endPage();
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141 graphics.popState();
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142 x += clipRect.width;
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143 }
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144 x = bounds.x;
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145 y += clipRect.height;
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146 }
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147 }
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148
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149 /**
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150 * @see org.eclipse.draw2d.PrintOperation#restorePrintSource()
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151 */
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152 protected void restorePrintSource() {
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153 getPrintSource().setBackgroundColor(oldBGColor);
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154 oldBGColor = null;
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155 }
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156
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157 /**
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158 * Sets the print mode. Possible values are {@link #TILE}, {@link #FIT_HEIGHT},
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159 * {@link #FIT_WIDTH} and {@link #FIT_PAGE}.
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160 * @param mode the print mode
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161 */
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162 public void setPrintMode(int mode) {
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163 printMode = mode;
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164 }
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165
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166 /**
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167 * Sets the printSource.
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168 * @param printSource The printSource to set
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169 */
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170 protected void setPrintSource(IFigure printSource) {
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171 this.printSource = printSource;
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172 }
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173
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174 /**
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175 * Sets up Graphics object for the given IFigure.
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176 * @param graphics The Graphics to setup
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177 * @param figure The IFigure used to setup graphics
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178 */
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179 protected void setupPrinterGraphicsFor(Graphics graphics, IFigure figure) {
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180 double dpiScale = cast(double)getPrinter().getDPI().x / Display.getCurrent().getDPI().x;
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181
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182 Rectangle printRegion = getPrintRegion();
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183 // put the print region in display coordinates
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184 printRegion.width /= dpiScale;
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185 printRegion.height /= dpiScale;
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186
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187 Rectangle bounds = figure.getBounds();
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188 double xScale = cast(double)printRegion.width / bounds.width;
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189 double yScale = cast(double)printRegion.height / bounds.height;
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190 switch (getPrintMode()) {
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191 case FIT_PAGE:
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192 graphics.scale(Math.min(xScale, yScale) * dpiScale);
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193 break;
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194 case FIT_WIDTH:
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195 graphics.scale(xScale * dpiScale);
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196 break;
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197 case FIT_HEIGHT:
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198 graphics.scale(yScale * dpiScale);
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199 break;
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200 default:
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201 graphics.scale(dpiScale);
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202 }
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203 graphics.setForegroundColor(figure.getForegroundColor());
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204 graphics.setBackgroundColor(figure.getBackgroundColor());
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205 graphics.setFont(figure.getFont());
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206 }
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207
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208 }