Add copy/paste (clipboard) interface to betawidget, along with an OS X implementation.

git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@5870 4a71c877-e1ca-e34f-864e-861f7616d084

lib/betawidget/clipboard.h

@@ -0,0 +1,42 @@
+/*
+	This file is part of Warzone 2100.
+	Copyright (C) 2008  Freddie Witherden
+	Copyright (C) 2008  Warzone Resurrection Project
+
+	Warzone 2100 is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	Warzone 2100 is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Warzone 2100; if not, write to the Free Software
+	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#ifndef CLIPBOARD_H_
+#define CLIPBOARD_H_
+
+/**
+ * Returns a copy of the text in the systems clipboard. Should the clipboard be
+ * empty, or populated with non-textual data NULL is returned.
+ *
+ * It remains the resposibility of the caller to free() the string when finished
+ * with it.
+ *
+ * @return The textual contents of the clipboard (if any), otherwise NULL.
+ */
+char *widgetGetClipboardText(void);
+
+/**
+ * Attempts to set the contents of the systems clipboard to text.
+ *
+ * @return True if the contents were successfully set, false otherwise.
+ */
+bool widgetSetClipboardText(const char *text);
+
+#endif /*CLIPBOARD_H_*/

lib/betawidget/clipboardOSX.m

@@ -0,0 +1,77 @@
+/*
+	This file is part of Warzone 2100.
+	Copyright (C) 2008  Freddie Witherden
+	Copyright (C) 2008  Warzone Resurrection Project
+
+	Warzone 2100 is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	Warzone 2100 is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Warzone 2100; if not, write to the Free Software
+	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include <stdlib.h>
+#include <stdbool.h>
+
+#import <AppKit/AppKit.h>
+
+char *widgetGetClipboardText()
+{
+	NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
+	NSArray *pasteboardTypes = [pasteboard types];
+	char *clipboardText = NULL;
+	
+	// Check if the pasteboard contains any text
+	if ([pasteboardTypes containsObject:NSStringPboardType])
+	{
+		// Fetch the text
+		NSString *text = [pasteboard stringForType:NSStringPboardType];
+		
+		// So long as there is some text; duplicate it
+		if ([text length])
+		{
+			clipboardText = strdup([text UTF8String]);
+		}
+		
+		// Release the text
+		[text release];
+	}
+	
+	// Clean-up
+	[pasteboard release];
+	[pasteboardTypes release];
+	
+	return clipboardText;
+}
+
+bool widgetSetClipboardText(const char *text)
+{
+	NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
+	
+	// We are willing to provide an NSString representation only
+	NSArray *types = [NSArray arrayWithObject:NSStringPboardType];
+	
+	// Convert text to an NSString instance
+	NSString *copyText = [[NSString alloc] initWithUTF8String:text];
+	
+	// Register the data types we are willing to provide
+	[pasteboard declareTypes:types owner:nil];
+	
+	// Set the pasteboard text
+	[pasteboard setString:copyText forType:NSStringPboardType];
+	
+	// Clean-up
+	[copyText release];
+	[pasteboard release];
+	[types release];
+	
+	return true;
+}

lib/betawidget/widget.h

@@ -40,7 +40,7 @@
 #include "geom.h"
 
 #include "keycode.h"
-
+#include "clipboard.h"
 #include "font.h"
 
 /*