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annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/dnd/TableDragSourceEffect.d @ 112:9f4c18c268b2

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Update to compile and execute with dmd 2.052.
author kntroh
date Wed, 16 Mar 2011 21:53:53 +0900
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1 /*******************************************************************************
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2 * Copyright (c) 2007, 2008 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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.swt.dnd.TableDragSourceEffect;
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14
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15 import org.eclipse.swt.SWT;
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16 import org.eclipse.swt.graphics.Image;
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17 import org.eclipse.swt.graphics.ImageData;
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18 import org.eclipse.swt.graphics.PaletteData;
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19 import org.eclipse.swt.graphics.Rectangle;
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20 import org.eclipse.swt.internal.win32.OS;
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21 import org.eclipse.swt.widgets.Display;
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22 import org.eclipse.swt.widgets.Table;
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23 import org.eclipse.swt.widgets.TableItem;
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24
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25 import org.eclipse.swt.dnd.DragSourceEffect;
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26 import org.eclipse.swt.dnd.DragSourceEvent;
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27
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28 import java.lang.all;
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29
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30 /**
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31 * This class provides default implementations to display a source image
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32 * when a drag is initiated from a <code>Table</code>.
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33 *
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34 * <p>Classes that wish to provide their own source image for a <code>Table</code> can
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35 * extend the <code>TableDragSourceEffect</code> class, override the
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36 * <code>TableDragSourceEffect.dragStart</code> method and set the field
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37 * <code>DragSourceEvent.image</code> with their own image.</p>
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38 *
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39 * Subclasses that override any methods of this class must call the corresponding
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40 * <code>super</code> method to get the default drag source effect implementation.
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41 *
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42 * @see DragSourceEffect
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43 * @see DragSourceEvent
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44 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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45 *
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46 * @since 3.3
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47 */
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48 public class TableDragSourceEffect : DragSourceEffect {
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49 Image dragSourceImage = null;
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50
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51 /**
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52 * Creates a new <code>TableDragSourceEffect</code> to handle drag effect
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53 * from the specified <code>Table</code>.
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54 *
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55 * @param table the <code>Table</code> that the user clicks on to initiate the drag
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56 */
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57 public this(Table table) {
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58 super(table);
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59 }
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60
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61 /**
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62 * This implementation of <code>dragFinished</code> disposes the image
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63 * that was created in <code>TableDragSourceEffect.dragStart</code>.
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64 *
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65 * Subclasses that override this method should call <code>super.dragFinished(event)</code>
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66 * to dispose the image in the default implementation.
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67 *
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68 * @param event the information associated with the drag finished event
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69 */
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70 public void dragFinished(DragSourceEvent event) {
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71 if (dragSourceImage !is null) dragSourceImage.dispose();
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72 dragSourceImage = null;
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73 }
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74
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75 /**
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76 * This implementation of <code>dragStart</code> will create a default
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77 * image that will be used during the drag. The image should be disposed
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78 * when the drag is completed in the <code>TableDragSourceEffect.dragFinished</code>
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79 * method.
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80 *
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81 * Subclasses that override this method should call <code>super.dragStart(event)</code>
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82 * to use the image from the default implementation.
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83 *
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84 * @param event the information associated with the drag start event
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85 */
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86 public void dragStart(DragSourceEvent event) {
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87 event.image = getDragSourceImage(event);
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88 }
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89
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90 Image getDragSourceImage(DragSourceEvent event) {
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91 if (dragSourceImage !is null) dragSourceImage.dispose();
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92 dragSourceImage = null;
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93 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (5, 1)) {
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94 SHDRAGIMAGE shdi;
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95 int DI_GETDRAGIMAGE = OS.RegisterWindowMessage ( "ShellGetDragImage"w.ptr ); //$NON-NLS-1$
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96 if (OS.SendMessage (control.handle, DI_GETDRAGIMAGE, 0, &shdi) !is 0) {
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97 if ((control.getStyle() & SWT.MIRRORED) !is 0) {
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98 event.x += shdi.sizeDragImage.cx - shdi.ptOffset.x;
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99 } else {
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100 event.x += shdi.ptOffset.x;
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101 }
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102 event.y += shdi.ptOffset.y;
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103 auto hImage = shdi.hbmpDragImage;
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104 if (hImage !is null) {
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105 BITMAP bm;
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106 OS.GetObject (hImage, BITMAP.sizeof, &bm);
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107 int srcWidth = bm.bmWidth;
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108 int srcHeight = bm.bmHeight;
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109
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110 /* Create resources */
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111 auto hdc = OS.GetDC (null);
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112 auto srcHdc = OS.CreateCompatibleDC (hdc);
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113 auto oldSrcBitmap = OS.SelectObject (srcHdc, hImage);
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114 auto memHdc = OS.CreateCompatibleDC (hdc);
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115 BITMAPINFOHEADER bmiHeader;
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116 bmiHeader.biSize = BITMAPINFOHEADER.sizeof;
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117 bmiHeader.biWidth = srcWidth;
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118 bmiHeader.biHeight = -srcHeight;
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119 bmiHeader.biPlanes = 1;
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120 bmiHeader.biBitCount = 32;
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121 bmiHeader.biCompression = OS.BI_RGB;
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122 void* pBits;
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123 auto memDib = OS.CreateDIBSection (null, cast(BITMAPINFO*)&bmiHeader, OS.DIB_RGB_COLORS, &pBits, null, 0);
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124 if (memDib is null) SWT.error (SWT.ERROR_NO_HANDLES);
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125 auto oldMemBitmap = OS.SelectObject (memHdc, memDib);
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126
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127 BITMAP dibBM;
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128 OS.GetObject (memDib, BITMAP.sizeof, &dibBM);
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129 int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;
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130
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131 /* Get the foreground pixels */
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132 OS.BitBlt (memHdc, 0, 0, srcWidth, srcHeight, srcHdc, 0, 0, OS.SRCCOPY);
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133 //byte[] srcData = new byte [sizeInBytes];
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134 //OS.MoveMemory (srcData, dibBM.bmBits, sizeInBytes);
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135 byte[] srcData = (cast(byte*) dibBM.bmBits)[ 0 .. sizeInBytes ];
0
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136
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137 PaletteData palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000);
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138 ImageData data = new ImageData(srcWidth, srcHeight, bm.bmBitsPixel, palette, bm.bmWidthBytes, srcData);
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139 if (shdi.crColorKey is -1) {
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140 byte[] alphaData = new byte[srcWidth * srcHeight];
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141 int spinc = dibBM.bmWidthBytes - srcWidth * 4;
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142 int ap = 0, sp = 3;
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143 for (int y = 0; y < srcHeight; ++y) {
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144 for (int x = 0; x < srcWidth; ++x) {
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145 alphaData [ap++] = srcData [sp];
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146 sp += 4;
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147 }
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148 sp += spinc;
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149 }
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150 data.alphaData = alphaData;
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151 } else {
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152 data.transparentPixel = shdi.crColorKey << 8;
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153 }
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154 dragSourceImage = new Image(control.getDisplay(), data);
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Frank Benoit <benoit@tionex.de>
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155 OS.SelectObject (memHdc, oldMemBitmap);
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Frank Benoit <benoit@tionex.de>
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156 OS.DeleteDC (memHdc);
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Frank Benoit <benoit@tionex.de>
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157 OS.DeleteObject (memDib);
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Frank Benoit <benoit@tionex.de>
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158 OS.SelectObject (srcHdc, oldSrcBitmap);
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Frank Benoit <benoit@tionex.de>
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159 OS.DeleteDC (srcHdc);
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Frank Benoit <benoit@tionex.de>
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160 OS.ReleaseDC (null, hdc);
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Frank Benoit <benoit@tionex.de>
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161 OS.DeleteObject (hImage);
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162 return dragSourceImage;
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163 }
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164 }
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165 return null;
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166 }
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Frank Benoit <benoit@tionex.de>
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167 Table table = cast(Table) control;
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Frank Benoit <benoit@tionex.de>
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168 //TEMPORARY CODE
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169 if (table.isListening (SWT.EraseItem) || table.isListening (SWT.PaintItem)) return null;
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170 TableItem[] selection = table.getSelection();
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171 if (selection.length is 0) return null;
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172 int /*long*/ tableImageList = OS.SendMessage (table.handle, OS.LVM_GETIMAGELIST, OS.LVSIL_SMALL, 0);
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173 if (tableImageList !is 0) {
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174 int count = Math.min(selection.length, 10);
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parents:
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175 Rectangle bounds = selection[0].getBounds(0);
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parents:
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176 for (int i = 1; i < count; i++) {
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177 bounds = bounds.makeUnion(selection[i].getBounds(0));
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178 }
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179 auto hDC = OS.GetDC(null);
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Frank Benoit <benoit@tionex.de>
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180 auto hDC1 = OS.CreateCompatibleDC(hDC);
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parents:
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181 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
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parents:
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182 if ((table.getStyle() & SWT.RIGHT_TO_LEFT) !is 0) {
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parents:
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183 OS.SetLayout(hDC1, OS.LAYOUT_RTL | OS.LAYOUT_BITMAPORIENTATIONPRESERVED);
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184 }
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parents:
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185 }
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Frank Benoit <benoit@tionex.de>
parents:
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186 auto bitmap = OS.CreateCompatibleBitmap(hDC, bounds.width, bounds.height);
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Frank Benoit <benoit@tionex.de>
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187 auto hOldBitmap = OS.SelectObject(hDC1, bitmap);
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188 RECT rect;
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Frank Benoit <benoit@tionex.de>
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189 rect.right = bounds.width;
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Frank Benoit <benoit@tionex.de>
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190 rect.bottom = bounds.height;
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Frank Benoit <benoit@tionex.de>
parents:
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191 auto hBrush = OS.GetStockObject(OS.WHITE_BRUSH);
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Frank Benoit <benoit@tionex.de>
parents:
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192 OS.FillRect(hDC1, &rect, hBrush);
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Frank Benoit <benoit@tionex.de>
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193 for (int i = 0; i < count; i++) {
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194 TableItem selected = selection[i];
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195 Rectangle cell = selected.getBounds(0);
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196 POINT pt;
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parents:
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197 HANDLE imageList = cast(HANDLE) OS.SendMessage (table.handle, OS.LVM_CREATEDRAGIMAGE, table.indexOf(selected), &pt);
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parents:
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198 OS.ImageList_Draw(imageList, 0, hDC1, cell.x - bounds.x, cell.y - bounds.y, OS.ILD_SELECTED);
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Frank Benoit <benoit@tionex.de>
parents:
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199 OS.ImageList_Destroy(imageList);
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Frank Benoit <benoit@tionex.de>
parents:
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200 }
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
201 OS.SelectObject(hDC1, hOldBitmap);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
202 OS.DeleteDC (hDC1);
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Frank Benoit <benoit@tionex.de>
parents:
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203 OS.ReleaseDC (null, hDC);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
204 Display display = table.getDisplay();
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Frank Benoit <benoit@tionex.de>
parents:
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205 dragSourceImage = Image.win32_new(display, SWT.BITMAP, bitmap);
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Frank Benoit <benoit@tionex.de>
parents:
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206 return dragSourceImage;
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parents:
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207 }
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parents:
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208 return null;
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parents:
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209 }
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Frank Benoit <benoit@tionex.de>
parents:
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210 }