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      1 /*
      2  * Copyright (C) 2011 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 "ShapeCache.h"
     20 
     21 namespace android {
     22 namespace uirenderer {
     23 
     24 ///////////////////////////////////////////////////////////////////////////////
     25 // Rounded rects
     26 ///////////////////////////////////////////////////////////////////////////////
     27 
     28 RoundRectShapeCache::RoundRectShapeCache(): ShapeCache<RoundRectShapeCacheEntry>(
     29         "round rect", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
     30 }
     31 
     32 PathTexture* RoundRectShapeCache::getRoundRect(float width, float height,
     33         float rx, float ry, SkPaint* paint) {
     34     RoundRectShapeCacheEntry entry(width, height, rx, ry, paint);
     35     PathTexture* texture = get(entry);
     36 
     37     if (!texture) {
     38         SkPath path;
     39         SkRect r;
     40         r.set(0.0f, 0.0f, width, height);
     41         path.addRoundRect(r, rx, ry, SkPath::kCW_Direction);
     42 
     43         texture = addTexture(entry, &path, paint);
     44     }
     45 
     46     return texture;
     47 }
     48 
     49 ///////////////////////////////////////////////////////////////////////////////
     50 // Circles
     51 ///////////////////////////////////////////////////////////////////////////////
     52 
     53 CircleShapeCache::CircleShapeCache(): ShapeCache<CircleShapeCacheEntry>(
     54         "circle", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
     55 }
     56 
     57 PathTexture* CircleShapeCache::getCircle(float radius, SkPaint* paint) {
     58     CircleShapeCacheEntry entry(radius, paint);
     59     PathTexture* texture = get(entry);
     60 
     61     if (!texture) {
     62         SkPath path;
     63         path.addCircle(radius, radius, radius, SkPath::kCW_Direction);
     64 
     65         texture = addTexture(entry, &path, paint);
     66     }
     67 
     68     return texture;
     69 }
     70 
     71 ///////////////////////////////////////////////////////////////////////////////
     72 // Ovals
     73 ///////////////////////////////////////////////////////////////////////////////
     74 
     75 OvalShapeCache::OvalShapeCache(): ShapeCache<OvalShapeCacheEntry>(
     76         "oval", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
     77 }
     78 
     79 PathTexture* OvalShapeCache::getOval(float width, float height, SkPaint* paint) {
     80     OvalShapeCacheEntry entry(width, height, paint);
     81     PathTexture* texture = get(entry);
     82 
     83     if (!texture) {
     84         SkPath path;
     85         SkRect r;
     86         r.set(0.0f, 0.0f, width, height);
     87         path.addOval(r, SkPath::kCW_Direction);
     88 
     89         texture = addTexture(entry, &path, paint);
     90     }
     91 
     92     return texture;
     93 }
     94 
     95 ///////////////////////////////////////////////////////////////////////////////
     96 // Rects
     97 ///////////////////////////////////////////////////////////////////////////////
     98 
     99 RectShapeCache::RectShapeCache(): ShapeCache<RectShapeCacheEntry>(
    100         "rect", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
    101 }
    102 
    103 PathTexture* RectShapeCache::getRect(float width, float height, SkPaint* paint) {
    104     RectShapeCacheEntry entry(width, height, paint);
    105     PathTexture* texture = get(entry);
    106 
    107     if (!texture) {
    108         SkRect bounds;
    109         bounds.set(0.0f, 0.0f, width, height);
    110 
    111         float left, top, offset;
    112         uint32_t rectWidth, rectHeight;
    113         computeBounds(bounds, paint, left, top, offset, rectWidth, rectHeight);
    114 
    115         if (!checkTextureSize(rectWidth, rectHeight)) return NULL;
    116 
    117         purgeCache(rectWidth, rectHeight);
    118 
    119         SkBitmap bitmap;
    120         initBitmap(bitmap, rectWidth, rectHeight);
    121 
    122         SkPaint pathPaint(*paint);
    123         initPaint(pathPaint);
    124 
    125         SkCanvas canvas(bitmap);
    126         canvas.translate(-left + offset, -top + offset);
    127         canvas.drawRect(bounds, pathPaint);
    128 
    129         texture = createTexture(0, 0, offset, rectWidth, rectHeight, 0);
    130         addTexture(entry, &bitmap, texture);
    131     }
    132 
    133     return texture;
    134 }
    135 
    136 ///////////////////////////////////////////////////////////////////////////////
    137 // Arcs
    138 ///////////////////////////////////////////////////////////////////////////////
    139 
    140 ArcShapeCache::ArcShapeCache(): ShapeCache<ArcShapeCacheEntry>(
    141         "arc", PROPERTY_SHAPE_CACHE_SIZE, DEFAULT_SHAPE_CACHE_SIZE) {
    142 }
    143 
    144 PathTexture* ArcShapeCache::getArc(float width, float height,
    145         float startAngle, float sweepAngle, bool useCenter, SkPaint* paint) {
    146     ArcShapeCacheEntry entry(width, height, startAngle, sweepAngle, useCenter, paint);
    147     PathTexture* texture = get(entry);
    148 
    149     if (!texture) {
    150         SkPath path;
    151         SkRect r;
    152         r.set(0.0f, 0.0f, width, height);
    153         if (useCenter) {
    154             path.moveTo(r.centerX(), r.centerY());
    155         }
    156         path.arcTo(r, startAngle, sweepAngle, !useCenter);
    157         if (useCenter) {
    158             path.close();
    159         }
    160 
    161         texture = addTexture(entry, &path, paint);
    162     }
    163 
    164     return texture;
    165 }
    166 
    167 }; // namespace uirenderer
    168 }; // namespace android
    169