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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 Research, 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"
class LLLayoutPanel;
class LLLayoutStack : public LLView, public LLInstanceTracker<LLLayoutStack>
{
public:
typedef enum e_layout_orientation
{
HORIZONTAL,
VERTICAL
} ELayoutOrientation;
struct OrientationNames
: public LLInitParam::TypeValuesHelper<ELayoutOrientation, OrientationNames>
{
static void declareValues();
};
struct LayoutStackRegistry : public LLChildRegistry<LayoutStackRegistry>
{};
struct Params : public LLInitParam::Block<Params, LLView::Params>
{
Mandatory<ELayoutOrientation, OrientationNames> orientation;
Optional<S32> border_size;
Optional<bool> animate,
clip;
Optional<F32> open_time_constant,
close_time_constant;
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);
static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node = NULL);
S32 getMinWidth() const { return mMinWidth; }
S32 getMinHeight() const { return mMinHeight; }
typedef enum e_animate
{
NO_ANIMATE,
ANIMATE
} EAnimate;
void addPanel(LLLayoutPanel* panel, EAnimate animate = NO_ANIMATE);
void removePanel(LLPanel* panel);
void collapsePanel(LLPanel* panel, BOOL collapsed = TRUE);
S32 getNumPanels() { return mPanels.size(); }
/**
* Moves panel_to_move before target_panel inside layout stack (both panels should already be there).
* If move_to_front is true target_panel is ignored and panel_to_move is moved to the beginning of mPanels
*/
void movePanel(LLPanel* panel_to_move, LLPanel* target_panel, bool move_to_front = false);
void updatePanelAutoResize(const std::string& panel_name, BOOL auto_resize);
void setPanelUserResize(const std::string& panel_name, BOOL user_resize);
/**
* Gets minimal dimension along layout_stack axis of the specified by name panel.
*
* @returns true if specified by panel_name internal panel exists, false otherwise.
*/
bool getPanelMinSize(const std::string& panel_name, S32* min_dimp);
/**
* Gets maximal dimension along layout_stack axis of the specified by name panel.
*
* @returns true if specified by panel_name internal panel exists, false otherwise.
*/
bool getPanelMaxSize(const std::string& panel_name, S32* max_dim);
void updateLayout(BOOL force_resize = FALSE);
S32 getPanelSpacing() const { return mPanelSpacing; }
BOOL getAnimate () const { return mAnimate; }
void setAnimate (BOOL animate) { mAnimate = animate; }
static void updateClass();
protected:
LLLayoutStack(const Params&);
friend class LLUICtrlFactory;
private:
void createResizeBars();
void calcMinExtents();
S32 getDefaultHeight(S32 cur_height);
S32 getDefaultWidth(S32 cur_width);
const ELayoutOrientation 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;
S32 mMinWidth; // calculated by calcMinExtents
S32 mMinHeight; // calculated by calcMinExtents
S32 mPanelSpacing;
// true if we already applied animation this frame
bool mAnimatedThisFrame;
bool mAnimate;
bool mClip;
F32 mOpenTimeConstant;
F32 mCloseTimeConstant;
}; // 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,
max_dim;
Optional<bool> user_resize,
auto_resize,
fit_content;
Params()
: expanded_min_dim("expanded_min_dim", 0),
min_dim("min_dim", 0),
max_dim("max_dim", 0),
user_resize("user_resize", true),
auto_resize("auto_resize", true),
fit_content("fit_content", false)
{
addSynonym(min_dim, "min_width");
addSynonym(min_dim, "min_height");
addSynonym(max_dim, "max_width");
addSynonym(max_dim, "max_height");
}
};
~LLLayoutPanel();
void initFromParams(const Params& p);
S32 getMinDim() const { return mMinDim; }
void setMinDim(S32 value) { mMinDim = value; if (!mExpandedMinDimSpecified) mExpandedMinDim = value; }
S32 getMaxDim() const { return mMaxDim; }
void setMaxDim(S32 value) { mMaxDim = value; }
S32 getExpandedMinDim() const { return mExpandedMinDim; }
void setExpandedMinDim(S32 value) { mExpandedMinDim = value; mExpandedMinDimSpecified = true; }
S32 getRelevantMinDim() const
{
S32 min_dim = mMinDim;
if (!mCollapsed)
{
min_dim = mExpandedMinDim;
}
return min_dim;
}
protected:
LLLayoutPanel(const Params& p);
F32 getCollapseFactor(LLLayoutStack::ELayoutOrientation orientation);
void fitToContent();
bool mExpandedMinDimSpecified;
S32 mExpandedMinDim;
S32 mMinDim;
S32 mMaxDim;
bool mAutoResize;
bool mUserResize;
bool mCollapsed;
bool mFitContent;
F32 mVisibleAmt;
F32 mCollapseAmt;
class LLResizeBar* mResizeBar;
};
#endif
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