Mercurial > projects > dwt-linux
view dwt/dnd/ClipboardProxy.d @ 364:2bcb17ebe0be default tip
fix: thx torhu
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 08 Nov 2009 20:57:46 +0100 |
parents | ce446666f5a2 |
children |
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/******************************************************************************* * Copyright (c) 2000, 2005 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.dnd.ClipboardProxy; import dwt.dwthelper.utils; import dwt.DWT; import dwt.internal.gtk.OS; import dwt.widgets.Display; import dwt.widgets.Event; import dwt.widgets.Listener; import dwt.dnd.Transfer; import dwt.dnd.Clipboard; import dwt.dnd.DND; import dwt.dnd.TransferData; import dwt.dwthelper.System; static import tango.stdc.string; class ClipboardProxy { /* Data is not flushed to the clipboard immediately. * This class will remember the data and provide it when requested. */ Object[] clipboardData; Transfer[] clipboardDataTypes; Object[] primaryClipboardData; Transfer[] primaryClipboardDataTypes; Display display; Clipboard activeClipboard = null; Clipboard activePrimaryClipboard = null; static String ID = "CLIPBOARD PROXY OBJECT"; //$NON-NLS-1$ static ClipboardProxy _getInstance(Display display) { ClipboardProxy proxy = cast(ClipboardProxy) display.getData(ID); if (proxy !is null) return proxy; proxy = new ClipboardProxy(display); display.setData(ID, proxy); display.addListener(DWT.Dispose, new class( display ) Listener { Display disp; this( Display disp ){ this.disp = disp; } public void handleEvent(Event event) { ClipboardProxy clipbordProxy = cast(ClipboardProxy)disp.getData(ID); if (clipbordProxy is null) return; disp.setData(ID, null); clipbordProxy.dispose(); } }); return proxy; } this(Display display) { this.display = display; } void clear (Clipboard owner, int clipboards) { if ((clipboards & DND.CLIPBOARD) !is 0 && activeClipboard is owner) { OS.gtk_clipboard_clear(Clipboard.GTKCLIPBOARD); } if ((clipboards & DND.SELECTION_CLIPBOARD) !is 0 && activePrimaryClipboard is owner) { OS.gtk_clipboard_clear(Clipboard.GTKPRIMARYCLIPBOARD); } } private static extern(C) void clearFuncFunc(GtkClipboard *clipboard, void* user_data_or_owner){ auto obj = cast(ClipboardProxy)user_data_or_owner; obj.clearFunc( clipboard ); } void clearFunc(GtkClipboard *clipboard ){ if (clipboard is Clipboard.GTKCLIPBOARD) { activeClipboard = null; clipboardData = null; clipboardDataTypes = null; } if (clipboard is Clipboard.GTKPRIMARYCLIPBOARD) { activePrimaryClipboard = null; primaryClipboardData = null; primaryClipboardDataTypes = null; } } void dispose () { if (display is null) return; if (activeClipboard !is null) OS.gtk_clipboard_clear(Clipboard.GTKCLIPBOARD); if (activePrimaryClipboard !is null) OS.gtk_clipboard_clear(Clipboard.GTKPRIMARYCLIPBOARD); display = null; clipboardData = null; clipboardDataTypes = null; primaryClipboardData = null; primaryClipboardDataTypes = null; } private static extern(C) void getFuncFunc( GtkClipboard *clipboard, GtkSelectionData *selection_data, uint info, void* user_data_or_owner) { auto obj = cast(ClipboardProxy)user_data_or_owner; obj.getFunc( clipboard, selection_data, info ); } /** * This function provides the data to the clipboard on request. * When this clipboard is disposed, the data will no longer be available. */ void getFunc( GtkClipboard *clipboard, GtkSelectionData *selectionData, uint info) { if (selectionData is null) return 0; TransferData tdata = new TransferData(); tdata.type = selectionData.target; Transfer[] types = (clipboard is Clipboard.GTKCLIPBOARD) ? clipboardDataTypes : primaryClipboardDataTypes; int index = -1; for (int i = 0; i < types.length; i++) { if (types[i].isSupportedType(tdata)) { index = i; break; } } if (index is -1) return 0; Object[] data = (clipboard is Clipboard.GTKCLIPBOARD) ? clipboardData : primaryClipboardData; types[index].javaToNative(data[index], tdata); if (tdata.format < 8 || tdata.format % 8 !is 0) { return 0; } OS.gtk_selection_data_set(selectionData, tdata.type, tdata.format, tdata.pValue, tdata.length); OS.g_free(tdata.pValue); return 1; } bool setData(Clipboard owner, Object[] data, Transfer[] dataTypes, int clipboards) { GtkTargetEntry*[] entries; GtkTargetEntry* pTargetsList; try { for (int i = 0; i < dataTypes.length; i++) { Transfer transfer = dataTypes[i]; int[] typeIds = transfer.getTypeIds(); String[] typeNames = transfer.getTypeNames(); for (int j = 0; j < typeIds.length; j++) { GtkTargetEntry* entry = new GtkTargetEntry(); entry.info = typeIds[j]; char* pName = cast(char*)OS.g_malloc(typeNames[j].length+1); pName[ 0 .. typeNames[j].length ] = typeNames[j]; pName[ typeNames[j].length ] = '\0'; entry.target = pName; GtkTargetEntry*[] tmp = new GtkTargetEntry*[entries.length + 1]; SimpleType!(GtkTargetEntry*).arraycopy(entries, 0, tmp, 0, entries.length); tmp[entries.length] = entry; entries = tmp; } } pTargetsList = cast(GtkTargetEntry*)OS.g_malloc(GtkTargetEntry.sizeof * entries.length); int offset = 0; for (int i = 0; i < entries.length; i++) { tango.stdc.string.memmove(pTargetsList + i, entries[i], GtkTargetEntry.sizeof); offset += GtkTargetEntry.sizeof; } if ((clipboards & DND.CLIPBOARD) !is 0) { if (activeClipboard !is null) OS.gtk_clipboard_clear(Clipboard.GTKCLIPBOARD); clipboardData = data; clipboardDataTypes = dataTypes; if (!OS.gtk_clipboard_set_with_data(Clipboard.GTKCLIPBOARD, pTargetsList, entries.length, &getFuncFunc, &clearFuncFunc, cast(void*)this )) { return false; } activeClipboard = owner; } if ((clipboards & DND.SELECTION_CLIPBOARD) !is 0) { if (activePrimaryClipboard !is null) OS.gtk_clipboard_clear(Clipboard.GTKPRIMARYCLIPBOARD); primaryClipboardData = data; primaryClipboardDataTypes = dataTypes; if (!OS.gtk_clipboard_set_with_data(Clipboard.GTKPRIMARYCLIPBOARD, pTargetsList, entries.length, &getFuncFunc, &clearFuncFunc, cast(void*)this )) { return false; } activePrimaryClipboard = owner; } return true; } finally { for (int i = 0; i < entries.length; i++) { GtkTargetEntry* entry = entries[i]; if( entry.target !is null) OS.g_free(entry.target); } if (pTargetsList !is null) OS.g_free(pTargetsList); } } }