Imported existing code

indra/llui/lldraghandle.h

@@ -0,0 +1,121 @@
+/** 
+ * @file lldraghandle.h
+ * @brief LLDragHandle base class
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+// A widget for dragging a view around the screen using the mouse.
+
+#ifndef LL_DRAGHANDLE_H
+#define LL_DRAGHANDLE_H
+
+#include "llview.h"
+#include "v4color.h"
+#include "llrect.h"
+#include "llcoord.h"
+
+class LLTextBox;
+
+class LLDragHandle : public LLView
+{
+public:
+	LLDragHandle(const std::string& name, const LLRect& rect, const std::string& title );
+	virtual ~LLDragHandle() { setTitleBox(NULL); }
+
+	virtual void setValue(const LLSD& value);
+
+	void			setForeground(BOOL b)		{ mForeground = b; }
+	BOOL			getForeground() const		{ return mForeground; }
+	void			setMaxTitleWidth(S32 max_width) {mMaxTitleWidth = llmin(max_width, mMaxTitleWidth); }
+	S32				getMaxTitleWidth() const { return mMaxTitleWidth; }
+	void			setTitleVisible(BOOL visible);
+
+	virtual void	setTitle( const std::string& title ) = 0;
+	virtual const std::string&	getTitle() const = 0;
+
+	virtual BOOL	handleHover(S32 x, S32 y, MASK mask);
+	virtual BOOL	handleMouseDown(S32 x, S32 y, MASK mask);
+	virtual BOOL	handleMouseUp(S32 x, S32 y, MASK mask);
+
+protected:
+	LLTextBox*		getTitleBox() const { return mTitleBox; }
+	void			setTitleBox(LLTextBox*);
+
+private:
+	S32				mDragLastScreenX;
+	S32				mDragLastScreenY;
+	S32				mLastMouseScreenX;
+	S32				mLastMouseScreenY;
+	LLCoordGL		mLastMouseDir;
+	LLColor4		mDragHighlightColor;
+	LLColor4		mDragShadowColor;
+	LLTextBox*		mTitleBox;
+	S32				mMaxTitleWidth;
+	BOOL			mForeground;
+
+	// Pixels near the edge to snap floaters.
+	static S32		sSnapMargin;
+};
+
+
+// Use this one for traditional top-of-window draggers
+class LLDragHandleTop
+: public LLDragHandle
+{
+public:
+	LLDragHandleTop(const std::string& name, const LLRect& rect, const std::string& title );
+
+	virtual void	setTitle( const std::string& title );
+	virtual const std::string& getTitle() const;
+	virtual void	draw();
+	virtual void	reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+
+private:
+	void	reshapeTitleBox();
+};
+
+
+// Use this for left-side, vertical text draggers
+class LLDragHandleLeft
+: public LLDragHandle
+{
+public:
+	LLDragHandleLeft(const std::string& name, const LLRect& rect, const std::string& title );
+
+	virtual void	setTitle( const std::string& title );
+	virtual const std::string& getTitle() const;
+	virtual void	draw();
+	virtual void	reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+
+};
+
+const S32 DRAG_HANDLE_HEIGHT = 16;
+const S32 DRAG_HANDLE_WIDTH = 16;
+
+#endif  // LL_DRAGHANDLE_H