1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SampleCode.h"
9 #include "SkView.h"
10 #include "SkCanvas.h"
11
12 #include "SkAnimator.h"
13 #include "SkStream.h"
14 #include "SkDOM.h"
15
16 ///////////////////////////////////////////////////////////////////////////////
17
18 class SkAnimatorView : public SkView {
19 public:
20 SkAnimatorView();
21 virtual ~SkAnimatorView();
22
23 void setURIBase(const char dir[]);
24
getAnimator() const25 SkAnimator* getAnimator() const { return fAnimator; }
26
27 bool decodeFile(const char path[]);
28 bool decodeMemory(const void* buffer, size_t size);
29 bool decodeStream(SkStream* stream);
30
31 protected:
32 // overrides
33 virtual void onDraw(SkCanvas*);
34 virtual bool onQuery(SkEvent* evt);
35
36 private:
37 SkString fBaseURI;
38 SkAnimator* fAnimator;
39
40 typedef SkView INHERITED;
41 };
42
SkAnimatorView()43 SkAnimatorView::SkAnimatorView() : fAnimator(NULL) {}
44
~SkAnimatorView()45 SkAnimatorView::~SkAnimatorView() {
46 delete fAnimator;
47 }
48
setURIBase(const char dir[])49 void SkAnimatorView::setURIBase(const char dir[]) {
50 fBaseURI.set(dir);
51 }
52
decodeFile(const char path[])53 bool SkAnimatorView::decodeFile(const char path[]) {
54 SkFILEStream* is = new SkFILEStream(path);
55 SkAutoUnref aur(is);
56 return is->isValid() && this->decodeStream(is);
57 }
58
decodeMemory(const void * buffer,size_t size)59 bool SkAnimatorView::decodeMemory(const void* buffer, size_t size) {
60 SkMemoryStream* is = new SkMemoryStream(buffer, size);
61 SkAutoUnref aur(is);
62 return this->decodeStream(is);
63 }
64
find_nodeID(const SkDOM & dom,const SkDOMNode * node,const char name[])65 static const SkDOMNode* find_nodeID(const SkDOM& dom,
66 const SkDOMNode* node, const char name[]) {
67 if (NULL == node) {
68 node = dom.getRootNode();
69 }
70 do {
71 const char* idval = dom.findAttr(node, "id");
72 if (idval && !strcmp(idval, name)) {
73 return node;
74 }
75 const SkDOMNode* child = dom.getFirstChild(node);
76 if (child) {
77 const SkDOMNode* found = find_nodeID(dom, child, name);
78 if (found) {
79 return found;
80 }
81 }
82 } while ((node = dom.getNextSibling(node)) != NULL);
83 return NULL;
84 }
85
decodeStream(SkStream * stream)86 bool SkAnimatorView::decodeStream(SkStream* stream) {
87 delete fAnimator;
88 fAnimator = new SkAnimator;
89 fAnimator->setURIBase(fBaseURI.c_str());
90 #if 0
91 if (!fAnimator->decodeStream(stream)) {
92 delete fAnimator;
93 fAnimator = NULL;
94 return false;
95 }
96 #else
97 size_t len = stream->getLength();
98 char* text = (char*)sk_malloc_throw(len);
99 stream->read(text, len);
100 SkDOM dom;
101 const SkDOM::Node* root = dom.build(text, len);
102 if (NULL == root) {
103 return false;
104 }
105 if (!fAnimator->decodeDOM(dom, root)) {
106 delete fAnimator;
107 fAnimator = NULL;
108 return false;
109 }
110 for (int i = 0; i <= 10; i++) {
111 SkString name("glyph");
112 name.appendS32(i);
113 const SkDOM::Node* node = find_nodeID(dom, NULL, name.c_str());
114 SkASSERT(node);
115 SkRect r;
116 dom.findScalar(node, "left", &r.fLeft);
117 dom.findScalar(node, "top", &r.fTop);
118 dom.findScalar(node, "width", &r.fRight); r.fRight += r.fLeft;
119 dom.findScalar(node, "height", &r.fBottom); r.fBottom += r.fTop;
120 SkDebugf("--- %s [%g %g %g %g]\n", name.c_str(),
121 r.fLeft, r.fTop, r.fRight, r.fBottom);
122 }
123 #endif
124 return true;
125 }
126
127 #include "SkTime.h"
128
onDraw(SkCanvas * canvas)129 void SkAnimatorView::onDraw(SkCanvas* canvas) {
130 canvas->drawColor(SK_ColorWHITE);
131 if (fAnimator) {
132 fAnimator->draw(canvas, 0);
133 #if 0
134 canvas->save();
135 canvas->translate(120, 30);
136 canvas->scale(0.5, 0.5);
137 fAnimator->draw(canvas, 0);
138 canvas->restore();
139
140 canvas->save();
141 canvas->translate(190, 40);
142 canvas->scale(0.25, 0.25);
143 fAnimator->draw(canvas, 0);
144 canvas->restore();
145
146 this->inval(NULL);
147 #endif
148 }
149 }
150
onQuery(SkEvent * evt)151 bool SkAnimatorView::onQuery(SkEvent* evt) {
152 if (SampleCode::TitleQ(*evt)) {
153 SampleCode::TitleR(evt, "Animator");
154 return true;
155 }
156 return this->INHERITED::onQuery(evt);
157 }
158
159 //////////////////////////////////////////////////////////////////////////////
160
MyFactory()161 static SkView* MyFactory() {
162 SkAnimatorView* av = new SkAnimatorView;
163 // av->decodeFile("/skimages/test.xml");
164 #if 0
165 av->setURIBase("/skia/trunk/animations/");
166 av->decodeFile("/skia/trunk/animations/checkbox.xml");
167 #else
168 av->setURIBase("/");
169 av->decodeFile("/testanim.txt");
170 #endif
171 return av;
172 }
173
174 static SkViewRegister reg(MyFactory);
175