The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/views/animated/SkScrollBarView.cpp
gfx/skia/trunk/src/views/animated/SkScrollBarView.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
equal
deleted
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replaced
| -1:000000000000 | 0:81aa758d81e3 |
|---|---|
| 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 "SkScrollBarView.h" | |
| 9 #include "SkAnimator.h" | |
| 10 #include "SkWidgetViews.h" | |
| 11 #include "SkSystemEventTypes.h" | |
| 12 #include "SkTime.h" | |
| 13 | |
| 14 //see SkProgressBarView.cpp | |
| 15 //#include "SkWidgetViews.cpp" | |
| 16 | |
| 17 SkScrollBarView::SkScrollBarView() | |
| 18 { | |
| 19 fAnim.setHostEventSink(this); | |
| 20 init_skin_anim(kScroll_SkinEnum, &fAnim); | |
| 21 | |
| 22 fTotalLength = 0; | |
| 23 fStartPoint = 0; | |
| 24 fShownLength = 0; | |
| 25 | |
| 26 this->adjust(); | |
| 27 } | |
| 28 | |
| 29 void SkScrollBarView::setStart(unsigned start) | |
| 30 { | |
| 31 if ((int)start < 0) | |
| 32 start = 0; | |
| 33 | |
| 34 if (fStartPoint != start) | |
| 35 { | |
| 36 fStartPoint = start; | |
| 37 this->adjust(); | |
| 38 } | |
| 39 } | |
| 40 | |
| 41 void SkScrollBarView::setShown(unsigned shown) | |
| 42 { | |
| 43 if ((int)shown < 0) | |
| 44 shown = 0; | |
| 45 | |
| 46 if (fShownLength != shown) | |
| 47 { | |
| 48 fShownLength = shown; | |
| 49 this->adjust(); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 void SkScrollBarView::setTotal(unsigned total) | |
| 54 { | |
| 55 if ((int)total < 0) | |
| 56 total = 0; | |
| 57 | |
| 58 if (fTotalLength != total) | |
| 59 { | |
| 60 fTotalLength = total; | |
| 61 this->adjust(); | |
| 62 } | |
| 63 } | |
| 64 | |
| 65 /* virtual */ void SkScrollBarView::onInflate(const SkDOM& dom, const SkDOM::Node* node) | |
| 66 { | |
| 67 this->INHERITED::onInflate(dom, node); | |
| 68 | |
| 69 int32_t value; | |
| 70 if (dom.findS32(node, "total", &value)) | |
| 71 this->setTotal(value); | |
| 72 if (dom.findS32(node, "shown", &value)) | |
| 73 this->setShown(value); | |
| 74 } | |
| 75 | |
| 76 /*virtual*/ void SkScrollBarView::onSizeChange() | |
| 77 { | |
| 78 this->INHERITED::onSizeChange(); | |
| 79 SkEvent evt("user"); | |
| 80 evt.setString("id", "setDim"); | |
| 81 evt.setScalar("dimX", this->width()); | |
| 82 evt.setScalar("dimY", this->height()); | |
| 83 fAnim.doUserEvent(evt); | |
| 84 } | |
| 85 | |
| 86 /*virtual*/ void SkScrollBarView::onDraw(SkCanvas* canvas) | |
| 87 { | |
| 88 SkPaint paint; | |
| 89 SkAnimator::DifferenceType diff = fAnim.draw(canvas, &paint, SkTime::GetMSecs()); | |
| 90 | |
| 91 if (diff == SkAnimator::kDifferent) | |
| 92 this->inval(NULL); | |
| 93 else if (diff == SkAnimator::kPartiallyDifferent) | |
| 94 { | |
| 95 SkRect bounds; | |
| 96 fAnim.getInvalBounds(&bounds); | |
| 97 this->inval(&bounds); | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 /*virtual*/ bool SkScrollBarView::onEvent(const SkEvent& evt) | |
| 102 { | |
| 103 if (evt.isType(SK_EventType_Inval)) | |
| 104 { | |
| 105 this->inval(NULL); | |
| 106 return true; | |
| 107 } | |
| 108 if (evt.isType("recommendDim")) | |
| 109 { | |
| 110 SkScalar width; | |
| 111 | |
| 112 if (evt.findScalar("x", &width)) | |
| 113 this->setWidth(width); | |
| 114 return true; | |
| 115 } | |
| 116 | |
| 117 return this->INHERITED::onEvent(evt); | |
| 118 } | |
| 119 | |
| 120 void SkScrollBarView::adjust() | |
| 121 { | |
| 122 int total = fTotalLength; | |
| 123 int start = fStartPoint; | |
| 124 int shown = fShownLength; | |
| 125 // int hideBar = 0; | |
| 126 | |
| 127 if (total <= 0 || shown <= 0 || shown >= total) // no bar to show | |
| 128 { | |
| 129 total = 1; // avoid divide-by-zero. should be done by skin/script | |
| 130 // hideBar = 1; // signal we don't want a thumb | |
| 131 } | |
| 132 else | |
| 133 { | |
| 134 if (start + shown > total) | |
| 135 start = total - shown; | |
| 136 } | |
| 137 | |
| 138 SkEvent e("user"); | |
| 139 e.setString("id", "adjustScrollBar"); | |
| 140 e.setScalar("_totalLength", SkIntToScalar(total)); | |
| 141 e.setScalar("_startPoint", SkIntToScalar(start)); | |
| 142 e.setScalar("_shownLength", SkIntToScalar(shown)); | |
| 143 // e.setS32("hideBar", hideBar); | |
| 144 fAnim.doUserEvent(e); | |
| 145 } |
