1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "OpenGLRenderer"
18
19 #include <utils/Log.h>
20
21 #include "PatchCache.h"
22 #include "Properties.h"
23
24 namespace android {
25 namespace uirenderer {
26
27 ///////////////////////////////////////////////////////////////////////////////
28 // Constructors/destructor
29 ///////////////////////////////////////////////////////////////////////////////
30
PatchCache()31 PatchCache::PatchCache(): mMaxEntries(DEFAULT_PATCH_CACHE_SIZE) {
32 }
33
PatchCache(uint32_t maxEntries)34 PatchCache::PatchCache(uint32_t maxEntries): mMaxEntries(maxEntries) {
35 }
36
~PatchCache()37 PatchCache::~PatchCache() {
38 clear();
39 }
40
41 ///////////////////////////////////////////////////////////////////////////////
42 // Caching
43 ///////////////////////////////////////////////////////////////////////////////
44
clear()45 void PatchCache::clear() {
46 size_t count = mCache.size();
47 for (size_t i = 0; i < count; i++) {
48 delete mCache.valueAt(i);
49 }
50 mCache.clear();
51 }
52
get(const float bitmapWidth,const float bitmapHeight,const float pixelWidth,const float pixelHeight,const int32_t * xDivs,const int32_t * yDivs,const uint32_t * colors,const uint32_t width,const uint32_t height,const int8_t numColors)53 Patch* PatchCache::get(const float bitmapWidth, const float bitmapHeight,
54 const float pixelWidth, const float pixelHeight,
55 const int32_t* xDivs, const int32_t* yDivs, const uint32_t* colors,
56 const uint32_t width, const uint32_t height, const int8_t numColors) {
57
58 int8_t transparentQuads = 0;
59 uint32_t colorKey = 0;
60
61 if (uint8_t(numColors) < sizeof(uint32_t) * 4) {
62 for (int8_t i = 0; i < numColors; i++) {
63 if (colors[i] == 0x0) {
64 transparentQuads++;
65 colorKey |= 0x1 << i;
66 }
67 }
68 }
69
70 // If the 9patch is made of only transparent quads
71 if (transparentQuads == int8_t((width + 1) * (height + 1))) {
72 return NULL;
73 }
74
75 const PatchDescription description(bitmapWidth, bitmapHeight,
76 pixelWidth, pixelHeight, width, height, transparentQuads, colorKey);
77
78 ssize_t index = mCache.indexOfKey(description);
79 Patch* mesh = NULL;
80 if (index >= 0) {
81 mesh = mCache.valueAt(index);
82 }
83
84 if (!mesh) {
85 PATCH_LOGD("New patch mesh "
86 "xCount=%d yCount=%d, w=%.2f h=%.2f, bw=%.2f bh=%.2f",
87 width, height, pixelWidth, pixelHeight, bitmapWidth, bitmapHeight);
88
89 mesh = new Patch(width, height, transparentQuads);
90 mesh->updateColorKey(colorKey);
91 mesh->copy(xDivs, yDivs);
92 mesh->updateVertices(bitmapWidth, bitmapHeight, 0.0f, 0.0f, pixelWidth, pixelHeight);
93
94 if (mCache.size() >= mMaxEntries) {
95 delete mCache.valueAt(mCache.size() - 1);
96 mCache.removeItemsAt(mCache.size() - 1, 1);
97 }
98
99 mCache.add(description, mesh);
100 } else if (!mesh->matches(xDivs, yDivs, colorKey)) {
101 PATCH_LOGD("Patch mesh does not match, refreshing vertices");
102 mesh->updateVertices(bitmapWidth, bitmapHeight, 0.0f, 0.0f, pixelWidth, pixelHeight);
103 }
104
105 return mesh;
106 }
107
108 }; // namespace uirenderer
109 }; // namespace android
110