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/**
* @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:
struct Params
: public LLInitParam::Block<Params, LLView::Params>
{
Optional<std::string> label;
Optional<LLUIColor> drag_highlight_color;
Optional<LLUIColor> drag_shadow_color;
Params()
: drag_highlight_color("", LLUI::getCachedColorFunctor("DefaultHighlightLight")),
drag_shadow_color("", LLUI::getCachedColorFunctor("DefaultShadowDark"))
{
mouse_opaque(true);
follows.flags(FOLLOWS_ALL);
}
};
void initFromParams(const Params&);
virtual ~LLDragHandle();
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:
LLDragHandle(const Params&);
friend class LLUICtrlFactory;
protected:
LLTextBox* mTitleBox;
private:
S32 mDragLastScreenX;
S32 mDragLastScreenY;
S32 mLastMouseScreenX;
S32 mLastMouseScreenY;
LLCoordGL mLastMouseDir;
LLUIColor mDragHighlightColor;
LLUIColor mDragShadowColor;
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
{
protected:
LLDragHandleTop(const Params& p) : LLDragHandle(p) {}
friend class LLUICtrlFactory;
public:
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
{
protected:
LLDragHandleLeft(const Params& p) : LLDragHandle(p) {}
friend class LLUICtrlFactory;
public:
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
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