The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/views/animated/SkScrollBarView.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 "SkScrollBarView.h"
    1.12 +#include "SkAnimator.h"
    1.13 +#include "SkWidgetViews.h"
    1.14 +#include "SkSystemEventTypes.h"
    1.15 +#include "SkTime.h"
    1.16 +
    1.17 +//see SkProgressBarView.cpp
    1.18 +//#include "SkWidgetViews.cpp"
    1.19 +
    1.20 +SkScrollBarView::SkScrollBarView()
    1.21 +{
    1.22 +    fAnim.setHostEventSink(this);
    1.23 +    init_skin_anim(kScroll_SkinEnum, &fAnim);
    1.24 +
    1.25 +    fTotalLength = 0;
    1.26 +    fStartPoint = 0;
    1.27 +    fShownLength = 0;
    1.28 +
    1.29 +    this->adjust();
    1.30 +}
    1.31 +
    1.32 +void SkScrollBarView::setStart(unsigned start)
    1.33 +{
    1.34 +    if ((int)start < 0)
    1.35 +        start = 0;
    1.36 +
    1.37 +    if (fStartPoint != start)
    1.38 +    {
    1.39 +        fStartPoint = start;
    1.40 +        this->adjust();
    1.41 +    }
    1.42 +}
    1.43 +
    1.44 +void SkScrollBarView::setShown(unsigned shown)
    1.45 +{
    1.46 +    if ((int)shown < 0)
    1.47 +        shown = 0;
    1.48 +
    1.49 +    if (fShownLength != shown)
    1.50 +    {
    1.51 +        fShownLength = shown;
    1.52 +        this->adjust();
    1.53 +    }
    1.54 +}
    1.55 +
    1.56 +void SkScrollBarView::setTotal(unsigned total)
    1.57 +{
    1.58 +    if ((int)total < 0)
    1.59 +        total = 0;
    1.60 +
    1.61 +    if (fTotalLength != total)
    1.62 +    {
    1.63 +        fTotalLength = total;
    1.64 +        this->adjust();
    1.65 +    }
    1.66 +}
    1.67 +
    1.68 +/* virtual */ void SkScrollBarView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
    1.69 +{
    1.70 +    this->INHERITED::onInflate(dom, node);
    1.71 +
    1.72 +    int32_t value;
    1.73 +    if (dom.findS32(node, "total", &value))
    1.74 +        this->setTotal(value);
    1.75 +    if (dom.findS32(node, "shown", &value))
    1.76 +        this->setShown(value);
    1.77 +}
    1.78 +
    1.79 +/*virtual*/ void SkScrollBarView::onSizeChange()
    1.80 +{
    1.81 +    this->INHERITED::onSizeChange();
    1.82 +    SkEvent evt("user");
    1.83 +    evt.setString("id", "setDim");
    1.84 +    evt.setScalar("dimX", this->width());
    1.85 +    evt.setScalar("dimY", this->height());
    1.86 +    fAnim.doUserEvent(evt);
    1.87 +}
    1.88 +
    1.89 +/*virtual*/ void SkScrollBarView::onDraw(SkCanvas* canvas)
    1.90 +{
    1.91 +    SkPaint                        paint;
    1.92 +    SkAnimator::DifferenceType    diff = fAnim.draw(canvas, &paint, SkTime::GetMSecs());
    1.93 +
    1.94 +    if (diff == SkAnimator::kDifferent)
    1.95 +        this->inval(NULL);
    1.96 +    else if (diff == SkAnimator::kPartiallyDifferent)
    1.97 +    {
    1.98 +        SkRect    bounds;
    1.99 +        fAnim.getInvalBounds(&bounds);
   1.100 +        this->inval(&bounds);
   1.101 +    }
   1.102 +}
   1.103 +
   1.104 +/*virtual*/ bool SkScrollBarView::onEvent(const SkEvent& evt)
   1.105 +{
   1.106 +    if (evt.isType(SK_EventType_Inval))
   1.107 +    {
   1.108 +        this->inval(NULL);
   1.109 +        return true;
   1.110 +    }
   1.111 +    if (evt.isType("recommendDim"))
   1.112 +    {
   1.113 +        SkScalar    width;
   1.114 +
   1.115 +        if (evt.findScalar("x", &width))
   1.116 +            this->setWidth(width);
   1.117 +        return true;
   1.118 +    }
   1.119 +
   1.120 +    return this->INHERITED::onEvent(evt);
   1.121 +}
   1.122 +
   1.123 +void SkScrollBarView::adjust()
   1.124 +{
   1.125 +    int total = fTotalLength;
   1.126 +    int start = fStartPoint;
   1.127 +    int shown = fShownLength;
   1.128 +//    int hideBar = 0;
   1.129 +
   1.130 +    if (total <= 0 || shown <= 0 || shown >= total)    // no bar to show
   1.131 +    {
   1.132 +        total = 1;        // avoid divide-by-zero. should be done by skin/script
   1.133 +//        hideBar = 1;    // signal we don't want a thumb
   1.134 +    }
   1.135 +    else
   1.136 +    {
   1.137 +        if (start + shown > total)
   1.138 +            start = total - shown;
   1.139 +    }
   1.140 +
   1.141 +    SkEvent e("user");
   1.142 +    e.setString("id", "adjustScrollBar");
   1.143 +    e.setScalar("_totalLength", SkIntToScalar(total));
   1.144 +    e.setScalar("_startPoint", SkIntToScalar(start));
   1.145 +    e.setScalar("_shownLength", SkIntToScalar(shown));
   1.146 +//    e.setS32("hideBar", hideBar);
   1.147 +    fAnim.doUserEvent(e);
   1.148 +}