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/**
* @file lllayoutstack.h
* @author Richard Nelson
* @brief LLLayout class - dynamic stacking of UI elements
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Reshasearch, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLLAYOUTSTACK_H
#define LL_LLLAYOUTSTACK_H
#include "llpanel.h"
#include "llresizebar.h"
class LLLayoutPanel;
class LLLayoutStack : public LLView, public LLInstanceTracker<LLLayoutStack>
{
public:
struct LayoutStackRegistry : public LLChildRegistry<LayoutStackRegistry>
{
LLSINGLETON_EMPTY_CTOR(LayoutStackRegistry);
};
struct Params : public LLInitParam::Block<Params, LLView::Params>
{
Mandatory<EOrientation> orientation;
Optional<S32> border_size;
Optional<bool> animate,
clip;
Optional<F32> open_time_constant,
close_time_constant;
Optional<S32> resize_bar_overlap;
Optional<bool> show_drag_handle;
Optional<S32> drag_handle_first_indent;
Optional<S32> drag_handle_second_indent;
Optional<S32> drag_handle_thickness;
Optional<S32> drag_handle_shift;
Params();
};
typedef LayoutStackRegistry child_registry_t;
virtual ~LLLayoutStack();
/*virtual*/ void draw();
/*virtual*/ void removeChild(LLView*);
/*virtual*/ BOOL postBuild();
/*virtual*/ bool addChild(LLView* child, S32 tab_group = 0);
/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node = NULL);
typedef enum e_animate
{
NO_ANIMATE,
ANIMATE
} EAnimate;
void addPanel(LLLayoutPanel* panel, EAnimate animate = NO_ANIMATE);
void collapsePanel(LLPanel* panel, BOOL collapsed = TRUE);
S32 getNumPanels() { return mPanels.size(); }
void updateLayout();
S32 getPanelSpacing() const { return mPanelSpacing; }
static void updateClass();
protected:
LLLayoutStack(const Params&);
friend class LLUICtrlFactory;
friend class LLLayoutPanel;
private:
void updateResizeBarLimits();
bool animatePanels();
void createResizeBar(LLLayoutPanel* panel);
const EOrientation mOrientation;
typedef std::vector<LLLayoutPanel*> e_panel_list_t;
e_panel_list_t mPanels;
LLLayoutPanel* findEmbeddedPanel(LLPanel* panelp) const;
LLLayoutPanel* findEmbeddedPanelByName(const std::string& name) const;
void updateFractionalSizes();
void normalizeFractionalSizes();
void updatePanelRect( LLLayoutPanel* param1, const LLRect& new_rect );
S32 mPanelSpacing;
// true if we already applied animation this frame
bool mAnimatedThisFrame;
bool mAnimate;
bool mClip;
F32 mOpenTimeConstant;
F32 mCloseTimeConstant;
bool mNeedsLayout;
S32 mResizeBarOverlap;
bool mShowDragHandle;
S32 mDragHandleFirstIndent;
S32 mDragHandleSecondIndent;
S32 mDragHandleThickness;
S32 mDragHandleShift;
}; // end class LLLayoutStack
class LLLayoutPanel : public LLPanel
{
friend class LLLayoutStack;
friend class LLUICtrlFactory;
public:
struct Params : public LLInitParam::Block<Params, LLPanel::Params>
{
Optional<S32> expanded_min_dim,
min_dim;
Optional<bool> user_resize,
auto_resize;
Params();
};
~LLLayoutPanel();
void initFromParams(const Params& p);
void handleReshape(const LLRect& new_rect, bool by_user);
void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
void setVisible(BOOL visible);
S32 getLayoutDim() const;
S32 getTargetDim() const;
void setTargetDim(S32 value);
S32 getMinDim() const { return llmax(0, mMinDim); }
void setMinDim(S32 value) { mMinDim = value; }
S32 getExpandedMinDim() const { return mExpandedMinDim >= 0 ? mExpandedMinDim : getMinDim(); }
void setExpandedMinDim(S32 value) { mExpandedMinDim = value; }
S32 getRelevantMinDim() const
{
S32 min_dim = mMinDim;
if (!mCollapsed)
{
min_dim = getExpandedMinDim();
}
return min_dim;
}
F32 getAutoResizeFactor() const;
F32 getVisibleAmount() const;
S32 getVisibleDim() const;
LLResizeBar* getResizeBar() { return mResizeBar; }
bool isCollapsed() const { return mCollapsed;}
void setOrientation(LLView::EOrientation orientation);
void storeOriginalDim();
void setIgnoreReshape(bool ignore) { mIgnoreReshape = ignore; }
protected:
LLLayoutPanel(const Params& p);
const bool mAutoResize;
const bool mUserResize;
S32 mExpandedMinDim;
S32 mMinDim;
bool mCollapsed;
F32 mVisibleAmt;
F32 mCollapseAmt;
F32 mFractionalSize;
S32 mTargetDim;
bool mIgnoreReshape;
LLView::EOrientation mOrientation;
class LLResizeBar* mResizeBar;
};
#endif
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