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comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/dnd/TableDragSourceEffect.d @ 0:6dd524f61e62

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add dwt win and basic java stuff
author Frank Benoit <benoit@tionex.de>
date Mon, 02 Mar 2009 14:44:16 +0100
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-1:000000000000 0:6dd524f61e62
1 /*******************************************************************************
2 * Copyright (c) 2007, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module org.eclipse.swt.dnd.TableDragSourceEffect;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.graphics.Image;
17 import org.eclipse.swt.graphics.ImageData;
18 import org.eclipse.swt.graphics.PaletteData;
19 import org.eclipse.swt.graphics.Rectangle;
20 import org.eclipse.swt.internal.win32.OS;
21 import org.eclipse.swt.widgets.Display;
22 import org.eclipse.swt.widgets.Table;
23 import org.eclipse.swt.widgets.TableItem;
24
25 import org.eclipse.swt.dnd.DragSourceEffect;
26 import org.eclipse.swt.dnd.DragSourceEvent;
27
28 import java.lang.all;
29
30 /**
31 * This class provides default implementations to display a source image
32 * when a drag is initiated from a <code>Table</code>.
33 *
34 * <p>Classes that wish to provide their own source image for a <code>Table</code> can
35 * extend the <code>TableDragSourceEffect</code> class, override the
36 * <code>TableDragSourceEffect.dragStart</code> method and set the field
37 * <code>DragSourceEvent.image</code> with their own image.</p>
38 *
39 * Subclasses that override any methods of this class must call the corresponding
40 * <code>super</code> method to get the default drag source effect implementation.
41 *
42 * @see DragSourceEffect
43 * @see DragSourceEvent
44 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
45 *
46 * @since 3.3
47 */
48 public class TableDragSourceEffect : DragSourceEffect {
49 Image dragSourceImage = null;
50
51 /**
52 * Creates a new <code>TableDragSourceEffect</code> to handle drag effect
53 * from the specified <code>Table</code>.
54 *
55 * @param table the <code>Table</code> that the user clicks on to initiate the drag
56 */
57 public this(Table table) {
58 super(table);
59 }
60
61 /**
62 * This implementation of <code>dragFinished</code> disposes the image
63 * that was created in <code>TableDragSourceEffect.dragStart</code>.
64 *
65 * Subclasses that override this method should call <code>super.dragFinished(event)</code>
66 * to dispose the image in the default implementation.
67 *
68 * @param event the information associated with the drag finished event
69 */
70 public void dragFinished(DragSourceEvent event) {
71 if (dragSourceImage !is null) dragSourceImage.dispose();
72 dragSourceImage = null;
73 }
74
75 /**
76 * This implementation of <code>dragStart</code> will create a default
77 * image that will be used during the drag. The image should be disposed
78 * when the drag is completed in the <code>TableDragSourceEffect.dragFinished</code>
79 * method.
80 *
81 * Subclasses that override this method should call <code>super.dragStart(event)</code>
82 * to use the image from the default implementation.
83 *
84 * @param event the information associated with the drag start event
85 */
86 public void dragStart(DragSourceEvent event) {
87 event.image = getDragSourceImage(event);
88 }
89
90 Image getDragSourceImage(DragSourceEvent event) {
91 if (dragSourceImage !is null) dragSourceImage.dispose();
92 dragSourceImage = null;
93 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (5, 1)) {
94 SHDRAGIMAGE shdi;
95 int DI_GETDRAGIMAGE = OS.RegisterWindowMessage ( "ShellGetDragImage"w.ptr ); //$NON-NLS-1$
96 if (OS.SendMessage (control.handle, DI_GETDRAGIMAGE, 0, &shdi) !is 0) {
97 if ((control.getStyle() & SWT.MIRRORED) !is 0) {
98 event.x += shdi.sizeDragImage.cx - shdi.ptOffset.x;
99 } else {
100 event.x += shdi.ptOffset.x;
101 }
102 event.y += shdi.ptOffset.y;
103 auto hImage = shdi.hbmpDragImage;
104 if (hImage !is null) {
105 BITMAP bm;
106 OS.GetObject (hImage, BITMAP.sizeof, &bm);
107 int srcWidth = bm.bmWidth;
108 int srcHeight = bm.bmHeight;
109
110 /* Create resources */
111 auto hdc = OS.GetDC (null);
112 auto srcHdc = OS.CreateCompatibleDC (hdc);
113 auto oldSrcBitmap = OS.SelectObject (srcHdc, hImage);
114 auto memHdc = OS.CreateCompatibleDC (hdc);
115 BITMAPINFOHEADER bmiHeader;
116 bmiHeader.biSize = BITMAPINFOHEADER.sizeof;
117 bmiHeader.biWidth = srcWidth;
118 bmiHeader.biHeight = -srcHeight;
119 bmiHeader.biPlanes = 1;
120 bmiHeader.biBitCount = 32;
121 bmiHeader.biCompression = OS.BI_RGB;
122 void* pBits;
123 auto memDib = OS.CreateDIBSection (null, cast(BITMAPINFO*)&bmiHeader, OS.DIB_RGB_COLORS, &pBits, null, 0);
124 if (memDib is null) SWT.error (SWT.ERROR_NO_HANDLES);
125 auto oldMemBitmap = OS.SelectObject (memHdc, memDib);
126
127 BITMAP dibBM;
128 OS.GetObject (memDib, BITMAP.sizeof, &dibBM);
129 int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;
130
131 /* Get the foreground pixels */
132 OS.BitBlt (memHdc, 0, 0, srcWidth, srcHeight, srcHdc, 0, 0, OS.SRCCOPY);
133 //byte[] srcData = new byte [sizeInBytes];
134 //OS.MoveMemory (srcData, dibBM.bmBits, sizeInBytes);
135 byte[] srcData = (cast(byte*) dibBM.bmBits)[ 0 .. BITMAPINFOHEADER.sizeof ];
136
137 PaletteData palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000);
138 ImageData data = new ImageData(srcWidth, srcHeight, bm.bmBitsPixel, palette, bm.bmWidthBytes, srcData);
139 if (shdi.crColorKey is -1) {
140 byte[] alphaData = new byte[srcWidth * srcHeight];
141 int spinc = dibBM.bmWidthBytes - srcWidth * 4;
142 int ap = 0, sp = 3;
143 for (int y = 0; y < srcHeight; ++y) {
144 for (int x = 0; x < srcWidth; ++x) {
145 alphaData [ap++] = srcData [sp];
146 sp += 4;
147 }
148 sp += spinc;
149 }
150 data.alphaData = alphaData;
151 } else {
152 data.transparentPixel = shdi.crColorKey << 8;
153 }
154 dragSourceImage = new Image(control.getDisplay(), data);
155 OS.SelectObject (memHdc, oldMemBitmap);
156 OS.DeleteDC (memHdc);
157 OS.DeleteObject (memDib);
158 OS.SelectObject (srcHdc, oldSrcBitmap);
159 OS.DeleteDC (srcHdc);
160 OS.ReleaseDC (null, hdc);
161 OS.DeleteObject (hImage);
162 return dragSourceImage;
163 }
164 }
165 return null;
166 }
167 Table table = cast(Table) control;
168 //TEMPORARY CODE
169 if (table.isListening (SWT.EraseItem) || table.isListening (SWT.PaintItem)) return null;
170 TableItem[] selection = table.getSelection();
171 if (selection.length is 0) return null;
172 int /*long*/ tableImageList = OS.SendMessage (table.handle, OS.LVM_GETIMAGELIST, OS.LVSIL_SMALL, 0);
173 if (tableImageList !is 0) {
174 int count = Math.min(selection.length, 10);
175 Rectangle bounds = selection[0].getBounds(0);
176 for (int i = 1; i < count; i++) {
177 bounds = bounds.makeUnion(selection[i].getBounds(0));
178 }
179 auto hDC = OS.GetDC(null);
180 auto hDC1 = OS.CreateCompatibleDC(hDC);
181 if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION(4, 10)) {
182 if ((table.getStyle() & SWT.RIGHT_TO_LEFT) !is 0) {
183 OS.SetLayout(hDC1, OS.LAYOUT_RTL | OS.LAYOUT_BITMAPORIENTATIONPRESERVED);
184 }
185 }
186 auto bitmap = OS.CreateCompatibleBitmap(hDC, bounds.width, bounds.height);
187 auto hOldBitmap = OS.SelectObject(hDC1, bitmap);
188 RECT rect;
189 rect.right = bounds.width;
190 rect.bottom = bounds.height;
191 auto hBrush = OS.GetStockObject(OS.WHITE_BRUSH);
192 OS.FillRect(hDC1, &rect, hBrush);
193 for (int i = 0; i < count; i++) {
194 TableItem selected = selection[i];
195 Rectangle cell = selected.getBounds(0);
196 POINT pt;
197 HANDLE imageList = cast(HANDLE) OS.SendMessage (table.handle, OS.LVM_CREATEDRAGIMAGE, table.indexOf(selected), &pt);
198 OS.ImageList_Draw(imageList, 0, hDC1, cell.x - bounds.x, cell.y - bounds.y, OS.ILD_SELECTED);
199 OS.ImageList_Destroy(imageList);
200 }
201 OS.SelectObject(hDC1, hOldBitmap);
202 OS.DeleteDC (hDC1);
203 OS.ReleaseDC (null, hDC);
204 Display display = table.getDisplay();
205 dragSourceImage = Image.win32_new(display, SWT.BITMAP, bitmap);
206 return dragSourceImage;
207 }
208 return null;
209 }
210 }