summaryrefslogtreecommitdiff
path: root/indra/llui/lllayoutstack.h
blob: 4a8702e318e48f65e0b323fb460c01ac82b15b7f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/** 
 * @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"


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;
		Optional<S32>			resize_bar_overlap;

		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_groupdatefractuiona = 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 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;
	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;
}; // 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 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;

	void setOrientation(LLLayoutStack::ELayoutOrientation 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;
	LLLayoutStack::ELayoutOrientation mOrientation;
	class LLResizeBar* mResizeBar;
};


#endif