e16efc1882
git-svn-id: http://skia.googlecode.com/svn/trunk@7406 2bbb7eff-a529-9590-31e7-b0007b416f81
133 lines
3.1 KiB
C++
133 lines
3.1 KiB
C++
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkWidget.h"
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#include "SkCanvas.h"
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#include "SkMath.h"
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#include "SkShader.h"
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#include "SkInterpolator.h"
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#include "SkTime.h"
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SkProgressView::SkProgressView(uint32_t flags) : SkView(flags), fOnShader(NULL), fOffShader(NULL)
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{
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fValue = 0;
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fMax = 0;
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fInterp = NULL;
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fDoInterp = false;
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}
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SkProgressView::~SkProgressView()
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{
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delete fInterp;
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SkSafeUnref(fOnShader);
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SkSafeUnref(fOffShader);
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}
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void SkProgressView::setMax(U16CPU max)
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{
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if (fMax != max)
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{
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fMax = SkToU16(max);
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if (fValue > 0)
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this->inval(NULL);
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}
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}
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void SkProgressView::setValue(U16CPU value)
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{
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if (fValue != value)
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{
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if (fDoInterp)
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{
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if (fInterp)
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delete fInterp;
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fInterp = new SkInterpolator(1, 2);
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SkScalar x = (SkScalar)(fValue << 8);
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fInterp->setKeyFrame(0, SkTime::GetMSecs(), &x, 0);
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x = (SkScalar)(value << 8);
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fInterp->setKeyFrame(1, SkTime::GetMSecs() + 333, &x);
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}
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fValue = SkToU16(value);
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this->inval(NULL);
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}
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}
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void SkProgressView::onDraw(SkCanvas* canvas)
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{
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if (fMax == 0)
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return;
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SkFixed percent;
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if (fInterp)
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{
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SkScalar x;
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if (fInterp->timeToValues(SkTime::GetMSecs(), &x) == SkInterpolator::kFreezeEnd_Result)
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{
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delete fInterp;
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fInterp = NULL;
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}
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percent = (SkFixed)x; // now its 16.8
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percent = SkMax32(0, SkMin32(percent, fMax << 8)); // now its pinned
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percent = SkFixedDiv(percent, fMax << 8); // now its 0.16
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this->inval(NULL);
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}
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else
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{
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U16CPU value = SkMax32(0, SkMin32(fValue, fMax));
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percent = SkFixedDiv(value, fMax);
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}
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SkRect r;
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SkPaint p;
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r.set(0, 0, this->width(), this->height());
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p.setAntiAlias(true);
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r.fRight = r.fLeft + SkScalarMul(r.width(), SkFixedToScalar(percent));
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p.setStyle(SkPaint::kFill_Style);
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p.setColor(SK_ColorDKGRAY);
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p.setShader(fOnShader);
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canvas->drawRect(r, p);
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p.setColor(SK_ColorWHITE);
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p.setShader(fOffShader);
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r.fLeft = r.fRight;
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r.fRight = this->width() - SK_Scalar1;
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if (r.width() > 0)
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canvas->drawRect(r, p);
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}
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#include "SkImageDecoder.h"
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static SkShader* inflate_shader(const char file[])
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{
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SkBitmap bm;
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return SkImageDecoder::DecodeFile(file, &bm) ?
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SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode) :
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NULL;
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}
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void SkProgressView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
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{
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this->INHERITED::onInflate(dom, node);
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const char* s;
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SkASSERT(fOnShader == NULL);
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SkASSERT(fOffShader == NULL);
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if ((s = dom.findAttr(node, "src-on")) != NULL)
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fOnShader = inflate_shader(s);
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if ((s = dom.findAttr(node, "src-off")) != NULL)
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fOffShader = inflate_shader(s);
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(void)dom.findBool(node, "do-interp", &fDoInterp);
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}
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