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      1 /* libs/graphics/animator/SkHitTest.cpp
      2 **
      3 ** Copyright 2006, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #include "SkHitTest.h"
     19 
     20 #if SK_USE_CONDENSED_INFO == 0
     21 
     22 const SkMemberInfo SkHitTest::fInfo[] = {
     23     SK_MEMBER_ARRAY(bullets, Displayable),
     24     SK_MEMBER_ARRAY(hits, Int),
     25     SK_MEMBER_ARRAY(targets, Displayable),
     26     SK_MEMBER(value, Boolean)
     27 };
     28 
     29 #endif
     30 
     31 DEFINE_GET_MEMBER(SkHitTest);
     32 
     33 SkHitTest::SkHitTest() : value(false) {
     34 }
     35 
     36 bool SkHitTest::draw(SkAnimateMaker& maker) {
     37     hits.setCount(bullets.count());
     38     value = false;
     39     int bulletCount = bullets.count();
     40     int targetCount = targets.count();
     41     for (int bIndex = 0; bIndex < bulletCount; bIndex++) {
     42         SkDisplayable* bullet = bullets[bIndex];
     43         SkRect bBounds;
     44         bullet->getBounds(&bBounds);
     45         hits[bIndex] = -1;
     46         if (bBounds.fLeft == (int16_t)0x8000U)
     47             continue;
     48         for (int tIndex = 0; tIndex < targetCount; tIndex++) {
     49             SkDisplayable* target = targets[tIndex];
     50             SkRect tBounds;
     51             target->getBounds(&tBounds);
     52             if (bBounds.intersect(tBounds)) {
     53                 hits[bIndex] = tIndex;
     54                 value = true;
     55                 break;
     56             }
     57         }
     58     }
     59     return false;
     60 }
     61 
     62 bool SkHitTest::enable(SkAnimateMaker& maker) {
     63     for (int bIndex = 0; bIndex < bullets.count(); bIndex++) {
     64         SkDisplayable* bullet = bullets[bIndex];
     65         bullet->enableBounder();
     66     }
     67     for (int tIndex = 0; tIndex < targets.count(); tIndex++) {
     68         SkDisplayable* target = targets[tIndex];
     69         target->enableBounder();
     70     }
     71     return false;
     72 }
     73 
     74 bool SkHitTest::hasEnable() const {
     75     return true;
     76 }
     77 
     78 const SkMemberInfo* SkHitTest::preferredChild(SkDisplayTypes type) {
     79     if (bullets.count() == 0)
     80         return getMember("bullets");
     81     return getMember("targets"); // !!! cwap! need to refer to member through enum like kScope instead
     82 }
     83 
     84