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      1 /*
      2  * Copyright 2011 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "SkDOM.h"
      9 #include "SkViewPriv.h"
     10 
     11 //////////////////////////////////////////////////////////////////////
     12 
     13 void SkView::Artist::draw(SkView* view, SkCanvas* canvas)
     14 {
     15     SkASSERT(view && canvas);
     16     this->onDraw(view, canvas);
     17 }
     18 
     19 void SkView::Artist::inflate(const SkDOM& dom, const SkDOM::Node* node)
     20 {
     21     SkASSERT(node);
     22     this->onInflate(dom, node);
     23 }
     24 
     25 void SkView::Artist::onInflate(const SkDOM&, const SkDOM::Node*)
     26 {
     27     // subclass should override this as needed
     28 }
     29 
     30 SkView::Artist* SkView::getArtist() const
     31 {
     32     Artist_SkTagList* rec = (Artist_SkTagList*)this->findTagList(kViewArtist_SkTagList);
     33     SkASSERT(rec == nullptr || rec->fArtist != nullptr);
     34 
     35     return rec ? rec->fArtist : nullptr;
     36 }
     37 
     38 SkView::Artist* SkView::setArtist(Artist* obj)
     39 {
     40     if (obj == nullptr)
     41     {
     42         this->removeTagList(kViewArtist_SkTagList);
     43     }
     44     else    // add/replace
     45     {
     46         Artist_SkTagList* rec = (Artist_SkTagList*)this->findTagList(kViewArtist_SkTagList);
     47 
     48         if (rec)
     49             SkRefCnt_SafeAssign(rec->fArtist, obj);
     50         else
     51             this->addTagList(new Artist_SkTagList(obj));
     52     }
     53     return obj;
     54 }
     55 
     56 ////////////////////////////////////////////////////////////////////////////////
     57 
     58 void SkView::Layout::layoutChildren(SkView* parent)
     59 {
     60     SkASSERT(parent);
     61     if (parent->width() > 0 && parent->height() > 0)
     62         this->onLayoutChildren(parent);
     63 }
     64 
     65 void SkView::Layout::inflate(const SkDOM& dom, const SkDOM::Node* node)
     66 {
     67     SkASSERT(node);
     68     this->onInflate(dom, node);
     69 }
     70 
     71 void SkView::Layout::onInflate(const SkDOM&, const SkDOM::Node*)
     72 {
     73     // subclass should override this as needed
     74 }
     75 
     76 SkView::Layout* SkView::getLayout() const
     77 {
     78     Layout_SkTagList* rec = (Layout_SkTagList*)this->findTagList(kViewLayout_SkTagList);
     79     SkASSERT(rec == nullptr || rec->fLayout != nullptr);
     80 
     81     return rec ? rec->fLayout : nullptr;
     82 }
     83 
     84 SkView::Layout* SkView::setLayout(Layout* obj, bool invokeLayoutNow)
     85 {
     86     if (obj == nullptr)
     87     {
     88         this->removeTagList(kViewLayout_SkTagList);
     89     }
     90     else    // add/replace
     91     {
     92         Layout_SkTagList* rec = (Layout_SkTagList*)this->findTagList(kViewLayout_SkTagList);
     93 
     94         if (rec)
     95             SkRefCnt_SafeAssign(rec->fLayout, obj);
     96         else
     97             this->addTagList(new Layout_SkTagList(obj));
     98     }
     99 
    100     if (invokeLayoutNow)
    101         this->invokeLayout();
    102 
    103     return obj;
    104 }
    105