|
1 /* |
|
2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Layout blender |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 |
|
20 |
|
21 #include "glxblendlayout.h" |
|
22 #include <glxpanic.h> // Panic codes |
|
23 |
|
24 // LOCAL METHODS |
|
25 namespace |
|
26 { |
|
27 // helper method to calculate coefficiency for given field |
|
28 TReal32 GetCoefficiency( |
|
29 TGlxLayoutInfo& aBaseInfo, |
|
30 TGlxLayoutInfo& aDeltaInfo, |
|
31 TGlxLayoutInfo::TLayoutType aType, |
|
32 TInt aIndex ) |
|
33 { |
|
34 /* |
|
35 // position, get coefficients |
|
36 //TReal32 new_coeff = aDeltaInfo.Coefficient( aType ); |
|
37 //TReal32 combined_coeff = aBaseInfo.Coefficient( aType ); |
|
38 // check if this is the first layout chain in the blender |
|
39 // and full coefficiency has not been yet reached |
|
40 if( aIndex == 0 && combined_coeff < 1.0 ) |
|
41 { |
|
42 // increase the coefficient to reach 1.0 |
|
43 new_coeff = 1.0 - combined_coeff; |
|
44 aBaseInfo.SetCoefficient( aType, 1.0 ); |
|
45 } |
|
46 // if the coefficient was bigger than zero |
|
47 // and full coefficiency has not been yet reached |
|
48 else if( new_coeff > 0.0 && combined_coeff < 1.0 ) |
|
49 { |
|
50 // dont allow coefficient to exceed 1.0 |
|
51 if( new_coeff > ( 1.0 - combined_coeff ) ) |
|
52 { |
|
53 new_coeff = 1.0 - combined_coeff; |
|
54 } |
|
55 // increase the coefficient |
|
56 aBaseInfo.SetCoefficient( aType, combined_coeff + new_coeff ); |
|
57 } |
|
58 else |
|
59 { |
|
60 // coefficient over or underflow |
|
61 new_coeff = 0; |
|
62 } |
|
63 return new_coeff;*/ |
|
64 } |
|
65 } |
|
66 |
|
67 // ----------------------------------------------------------------------------- |
|
68 // Constructor |
|
69 // ----------------------------------------------------------------------------- |
|
70 EXPORT_C TGlxBlendLayout::TGlxBlendLayout() |
|
71 : iChanged( EFalse ) // blender not is changed by default |
|
72 { |
|
73 __DEBUG_ONLY( _iName = _L( "TGlxBlendLayout" ) ); |
|
74 } |
|
75 |
|
76 // ----------------------------------------------------------------------------- |
|
77 // Destructor |
|
78 // ----------------------------------------------------------------------------- |
|
79 EXPORT_C TGlxBlendLayout::~TGlxBlendLayout () |
|
80 { |
|
81 iLayouts.Close(); |
|
82 } |
|
83 |
|
84 // ----------------------------------------------------------------------------- |
|
85 // AddLayoutL |
|
86 // ----------------------------------------------------------------------------- |
|
87 EXPORT_C void TGlxBlendLayout::AddLayoutL( MGlxLayout* aLayout ) |
|
88 { |
|
89 // layout must not be null |
|
90 __ASSERT_DEBUG( aLayout, Panic( EGlxPanicNullLayout ) ); |
|
91 // create layout struct |
|
92 TLayout cache; |
|
93 cache.iLayout = aLayout; |
|
94 __ASSERT_DEBUG( |
|
95 iLayouts.Find( cache, TLayout::Match ) == KErrNotFound, |
|
96 Panic( EGlxPanicAlreadyAdded ) ); |
|
97 |
|
98 // cant set anything sane to layout info at this point |
|
99 iLayouts.AppendL( cache ); |
|
100 iChanged = ETrue; |
|
101 } |
|
102 |
|
103 // ----------------------------------------------------------------------------- |
|
104 // RemoveLayout |
|
105 // ----------------------------------------------------------------------------- |
|
106 EXPORT_C void TGlxBlendLayout::RemoveLayout( const MGlxLayout* aLayout ) |
|
107 { |
|
108 TInt count = iLayouts.Count(); |
|
109 for( TInt i = 0; i < count; i++ ) |
|
110 { |
|
111 if( iLayouts[ i ].iLayout == aLayout ) |
|
112 { |
|
113 // Found it, remove |
|
114 iLayouts.Remove( i ); |
|
115 iChanged = ETrue; |
|
116 return; |
|
117 } |
|
118 } |
|
119 // its ok to remove a layout that was already gone, no harm done there |
|
120 } |
|
121 |
|
122 // ----------------------------------------------------------------------------- |
|
123 // RemoveAllLayouts |
|
124 // ----------------------------------------------------------------------------- |
|
125 EXPORT_C void TGlxBlendLayout::RemoveAllLayouts() |
|
126 { |
|
127 iLayouts.Close(); |
|
128 } |
|
129 |
|
130 // ----------------------------------------------------------------------------- |
|
131 // MapValue |
|
132 // ----------------------------------------------------------------------------- |
|
133 void TGlxBlendLayout::DoSetLayoutValues( TGlxLayoutInfo& aInfo ) |
|
134 { |
|
135 /* |
|
136 TInt count = iLayouts.Count(); |
|
137 // first set each layouts info fields correctly |
|
138 for( TInt i = 0; i < count; i++ ) |
|
139 { |
|
140 // reset the values for the layout info |
|
141 //iLayouts[ i ].iLayoutInfo.Reset( aInfo.Index() ); |
|
142 //iLayouts[ i ].iLayoutInfo.SetVisual( aInfo.Visual() ); |
|
143 //iLayouts[ i ].iLayoutInfo.SetScreenInfo( aInfo.ScreenInfo() ); |
|
144 } |
|
145 |
|
146 // process each layout |
|
147 for( TInt i = 0; i < count; i++ ) |
|
148 { |
|
149 // call the layout (chain) to perform the processing for their own info |
|
150 iLayouts[ i ].iLayout->SetLayoutValues( iLayouts[ i ].iLayoutInfo ); |
|
151 } |
|
152 |
|
153 // reset completely the aInfo fields and its coefficients |
|
154 // we use the coefficient fields to know when we have enough values for |
|
155 // certain field (coefficient reaches 1.0) |
|
156 // we need to reset the base values as the cached values in layout chains |
|
157 // had default values (which may not ne 0 for all fields) |
|
158 aInfo.iPosition.iX = 0; |
|
159 aInfo.iPosition.iY = 0; |
|
160 aInfo.SetCoefficient( TGlxLayoutInfo::EPosition, 0 ); |
|
161 aInfo.iSize.iX = 0; |
|
162 aInfo.iSize.iY = 0; |
|
163 aInfo.SetCoefficient( TGlxLayoutInfo::ESize, 0 ); |
|
164 aInfo.iOpacity = 0; |
|
165 aInfo.SetCoefficient( TGlxLayoutInfo::EOpacity, 0 ); |
|
166 aInfo.iRotation = 0; |
|
167 aInfo.SetCoefficient( TGlxLayoutInfo::ERotation, 0 ); |
|
168 |
|
169 // then merge the values according to coefficients |
|
170 // need to process in reverse order since layout in index 0 |
|
171 // has the strongest effect |
|
172 for( TInt i = count - 1; i >= 0; i-- ) |
|
173 { |
|
174 // position, get coefficient |
|
175 TReal32 new_coeff = GetCoefficiency( |
|
176 aInfo, iLayouts[ i ].iLayoutInfo, |
|
177 TGlxLayoutInfo::EPosition, i ); |
|
178 // if the coefficient was bigger than zero |
|
179 if( new_coeff > 0.0 ) |
|
180 { |
|
181 // add new position, multiplied with the coefficient |
|
182 aInfo.iPosition.iX += |
|
183 iLayouts[ i ].iLayoutInfo.iPosition.iX * new_coeff; |
|
184 aInfo.iPosition.iY += |
|
185 iLayouts[ i ].iLayoutInfo.iPosition.iY * new_coeff; |
|
186 } |
|
187 |
|
188 // size, get coefficient |
|
189 new_coeff = GetCoefficiency( |
|
190 aInfo, iLayouts[ i ].iLayoutInfo, |
|
191 TGlxLayoutInfo::ESize, i ); |
|
192 // if the coefficient was bigger than zero |
|
193 if( new_coeff > 0.0 ) |
|
194 { |
|
195 // add new size, multiplied with the coefficient |
|
196 aInfo.iSize.iX += |
|
197 iLayouts[ i ].iLayoutInfo.iSize.iX * new_coeff; |
|
198 aInfo.iSize.iY += |
|
199 iLayouts[ i ].iLayoutInfo.iSize.iY * new_coeff; |
|
200 } |
|
201 |
|
202 // opacity, get coefficient |
|
203 new_coeff = GetCoefficiency( |
|
204 aInfo, iLayouts[ i ].iLayoutInfo, |
|
205 TGlxLayoutInfo::EOpacity, i ); |
|
206 if( new_coeff > 0.0 ) |
|
207 { |
|
208 // add new opacity, multiplied with the coefficient |
|
209 aInfo.iOpacity += |
|
210 iLayouts[ i ].iLayoutInfo.iOpacity * new_coeff; |
|
211 } |
|
212 |
|
213 // rotation, get coefficient |
|
214 new_coeff = GetCoefficiency( |
|
215 aInfo, iLayouts[ i ].iLayoutInfo, |
|
216 TGlxLayoutInfo::ERotation, i ); |
|
217 if( new_coeff > 0.0 ) |
|
218 { |
|
219 // add new rotation, multiplied with the coefficient |
|
220 aInfo.iRotation += |
|
221 iLayouts[ i ].iLayoutInfo.iRotation * new_coeff; |
|
222 } |
|
223 } */ |
|
224 } |
|
225 |
|
226 // ----------------------------------------------------------------------------- |
|
227 // DoChanged |
|
228 // ----------------------------------------------------------------------------- |
|
229 TBool TGlxBlendLayout::DoChanged() const |
|
230 { |
|
231 // See if even one layout has changed |
|
232 /// @todo consider adding the index of current visual to the Changed call |
|
233 /* TInt count = iLayouts.Count(); |
|
234 for( TInt i = 0; i < count; i++ ) |
|
235 { |
|
236 if( iLayouts[ i ].iLayout->Changed() ) |
|
237 { |
|
238 return ETrue; |
|
239 } |
|
240 } |
|
241 |
|
242 return iChanged; |
|
243 */ } |
|
244 |
|
245 // ----------------------------------------------------------------------------- |
|
246 // DoClearChanged |
|
247 // ----------------------------------------------------------------------------- |
|
248 void TGlxBlendLayout::DoClearChanged() |
|
249 { |
|
250 TInt count = iLayouts.Count(); |
|
251 for( TInt i = 0; i < count; i++ ) |
|
252 { |
|
253 // iLayouts[ i ].iLayout->ClearChanged(); |
|
254 } |
|
255 |
|
256 iChanged = EFalse; |
|
257 } |
|
258 |
|
259 // ----------------------------------------------------------------------------- |
|
260 // TLayout::Match |
|
261 // ----------------------------------------------------------------------------- |
|
262 TBool TGlxBlendLayout::TLayout::Match( const TLayout& aLhs, const TLayout& aRhs ) |
|
263 { |
|
264 return aLhs.iLayout == aRhs.iLayout; |
|
265 } |