1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/views/SkViewInflate.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,145 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2011 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +#include "SkViewInflate.h"
1.12 +#include "SkView.h"
1.13 +#include <stdio.h>
1.14 +
1.15 +SkViewInflate::SkViewInflate() : fIDs(kMinIDStrAlloc), fStrings(kMinIDStrAlloc)
1.16 +{
1.17 +}
1.18 +
1.19 +SkViewInflate::~SkViewInflate()
1.20 +{
1.21 +}
1.22 +
1.23 +void SkViewInflate::rInflate(const SkDOM& dom, const SkDOM::Node* node, SkView* parent)
1.24 +{
1.25 + const char* str = dom.findAttr(node, "id");
1.26 + if (str)
1.27 + fIDs.set(str, parent);
1.28 +
1.29 + const SkDOM::Node* child = dom.getFirstChild(node);
1.30 + while (child)
1.31 + {
1.32 + SkView* view = this->createView(dom, child);
1.33 + if (view)
1.34 + {
1.35 + this->rInflate(dom, child, view);
1.36 + parent->attachChildToFront(view)->unref();
1.37 + }
1.38 + else
1.39 + {
1.40 + const char* name = dom.getName(child);
1.41 + const char* target;
1.42 +
1.43 + if (!strcmp(name, "listenTo") && (target = dom.findAttr(child, "target")) != NULL)
1.44 + this->addIDStr(&fListenTo, parent, target);
1.45 +
1.46 + if (!strcmp(name, "broadcastTo") && (target = dom.findAttr(child, "target")) != NULL)
1.47 + this->addIDStr(&fBroadcastTo, parent, target);
1.48 + }
1.49 + child = dom.getNextSibling(child);
1.50 + }
1.51 +
1.52 + parent->setVisibleP(true);
1.53 + this->inflateView(parent, dom, node);
1.54 +}
1.55 +
1.56 +void SkViewInflate::inflateView(SkView* view, const SkDOM& dom, const SkDOM::Node* node)
1.57 +{
1.58 + // called after all of view's children have been instantiated.
1.59 + // this may be overridden by a subclass, to load in layout or other helpers
1.60 + // they should call through to us (INHERITED) before or after their patch
1.61 + view->inflate(dom, node);
1.62 +}
1.63 +
1.64 +SkView* SkViewInflate::inflate(const SkDOM& dom, const SkDOM::Node* node, SkView* root)
1.65 +{
1.66 + fIDs.reset();
1.67 +
1.68 + if (root == NULL)
1.69 + {
1.70 + root = this->createView(dom, node);
1.71 + if (root == NULL)
1.72 + {
1.73 + printf("createView returned NULL on <%s>\n", dom.getName(node));
1.74 + return NULL;
1.75 + }
1.76 + }
1.77 + this->rInflate(dom, node, root);
1.78 +
1.79 + // resolve listeners and broadcasters
1.80 + {
1.81 + SkView* target;
1.82 + const IDStr* iter = fListenTo.begin();
1.83 + const IDStr* stop = fListenTo.end();
1.84 + for (; iter < stop; iter++)
1.85 + {
1.86 + if (fIDs.find(iter->fStr, &target))
1.87 + target->addListenerID(iter->fView->getSinkID());
1.88 + }
1.89 +
1.90 + iter = fBroadcastTo.begin();
1.91 + stop = fBroadcastTo.end();
1.92 + for (; iter < stop; iter++)
1.93 + {
1.94 + if (fIDs.find(iter->fStr, &target))
1.95 + iter->fView->addListenerID(target->getSinkID());
1.96 + }
1.97 + }
1.98 +
1.99 + // now that the tree is built, give everyone a shot at the ID dict
1.100 + root->postInflate(fIDs);
1.101 + return root;
1.102 +}
1.103 +
1.104 +SkView* SkViewInflate::inflate(const char xml[], size_t len, SkView* root)
1.105 +{
1.106 + SkDOM dom;
1.107 + const SkDOM::Node* node = dom.build(xml, len);
1.108 +
1.109 + return node ? this->inflate(dom, node, root) : NULL;
1.110 +}
1.111 +
1.112 +SkView* SkViewInflate::findViewByID(const char id[]) const
1.113 +{
1.114 + SkASSERT(id);
1.115 + SkView* view;
1.116 + return fIDs.find(id, &view) ? view : NULL;
1.117 +}
1.118 +
1.119 +SkView* SkViewInflate::createView(const SkDOM& dom, const SkDOM::Node* node)
1.120 +{
1.121 + if (!strcmp(dom.getName(node), "view"))
1.122 + return new SkView;
1.123 + return NULL;
1.124 +}
1.125 +
1.126 +void SkViewInflate::addIDStr(SkTDArray<IDStr>* list, SkView* view, const char* str)
1.127 +{
1.128 + size_t len = strlen(str) + 1;
1.129 + IDStr* pair = list->append();
1.130 + pair->fView = view;
1.131 + pair->fStr = (char*)fStrings.alloc(len, SkChunkAlloc::kThrow_AllocFailType);
1.132 + memcpy(pair->fStr, str, len);
1.133 +}
1.134 +
1.135 +#ifdef SK_DEBUG
1.136 +void SkViewInflate::dump() const
1.137 +{
1.138 + const IDStr* iter = fListenTo.begin();
1.139 + const IDStr* stop = fListenTo.end();
1.140 + for (; iter < stop; iter++)
1.141 + SkDebugf("inflate: listenTo(\"%s\")\n", iter->fStr);
1.142 +
1.143 + iter = fBroadcastTo.begin();
1.144 + stop = fBroadcastTo.end();
1.145 + for (; iter < stop; iter++)
1.146 + SkDebugf("inflate: broadcastFrom(\"%s\")\n", iter->fStr);
1.147 +}
1.148 +#endif
