grab from latest android
git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/views/SkProgressView.cpp b/src/views/SkProgressView.cpp
new file mode 100644
index 0000000..a34c284
--- /dev/null
+++ b/src/views/SkProgressView.cpp
@@ -0,0 +1,125 @@
+#include "SkWidget.h"
+#include "SkCanvas.h"
+#include "SkShader.h"
+#include "SkInterpolator.h"
+#include "SkTime.h"
+
+SkProgressView::SkProgressView(uint32_t flags) : SkView(flags), fOnShader(NULL), fOffShader(NULL)
+{
+ fValue = 0;
+ fMax = 0;
+ fInterp = NULL;
+ fDoInterp = false;
+}
+
+SkProgressView::~SkProgressView()
+{
+ delete fInterp;
+ fOnShader->safeUnref();
+ fOffShader->safeUnref();
+}
+
+void SkProgressView::setMax(U16CPU max)
+{
+ if (fMax != max)
+ {
+ fMax = SkToU16(max);
+ if (fValue > 0)
+ this->inval(NULL);
+ }
+}
+
+void SkProgressView::setValue(U16CPU value)
+{
+ if (fValue != value)
+ {
+ if (fDoInterp)
+ {
+ if (fInterp)
+ delete fInterp;
+ fInterp = new SkInterpolator(1, 2);
+ SkScalar x = (SkScalar)(fValue << 8);
+ fInterp->setKeyFrame(0, SkTime::GetMSecs(), &x, 0);
+ x = (SkScalar)(value << 8);
+ fInterp->setKeyFrame(1, SkTime::GetMSecs() + 333, &x);
+ }
+ fValue = SkToU16(value);
+ this->inval(NULL);
+ }
+}
+
+void SkProgressView::onDraw(SkCanvas* canvas)
+{
+ if (fMax == 0)
+ return;
+
+ SkFixed percent;
+
+ if (fInterp)
+ {
+ SkScalar x;
+ if (fInterp->timeToValues(SkTime::GetMSecs(), &x) == SkInterpolator::kFreezeEnd_Result)
+ {
+ delete fInterp;
+ fInterp = NULL;
+ }
+ percent = (SkFixed)x; // now its 16.8
+ percent = SkMax32(0, SkMin32(percent, fMax << 8)); // now its pinned
+ percent = SkFixedDiv(percent, fMax << 8); // now its 0.16
+ this->inval(NULL);
+ }
+ else
+ {
+ U16CPU value = SkMax32(0, SkMin32(fValue, fMax));
+ percent = SkFixedDiv(value, fMax);
+ }
+
+
+ SkRect r;
+ SkPaint p;
+
+ r.set(0, 0, this->width(), this->height());
+ p.setAntiAlias(true);
+
+ r.fRight = r.fLeft + SkScalarMul(r.width(), SkFixedToScalar(percent));
+ p.setStyle(SkPaint::kFill_Style);
+
+ p.setColor(SK_ColorDKGRAY);
+ p.setShader(fOnShader);
+ canvas->drawRect(r, p);
+
+ p.setColor(SK_ColorWHITE);
+ p.setShader(fOffShader);
+ r.fLeft = r.fRight;
+ r.fRight = this->width() - SK_Scalar1;
+ if (r.width() > 0)
+ canvas->drawRect(r, p);
+}
+
+#include "SkImageDecoder.h"
+
+static SkShader* inflate_shader(const char file[])
+{
+ SkBitmap bm;
+
+ return SkImageDecoder::DecodeFile(file, &bm) ?
+ SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode) :
+ NULL;
+}
+
+void SkProgressView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
+{
+ this->INHERITED::onInflate(dom, node);
+
+ const char* s;
+
+ SkASSERT(fOnShader == NULL);
+ SkASSERT(fOffShader == NULL);
+
+ if ((s = dom.findAttr(node, "src-on")) != NULL)
+ fOnShader = inflate_shader(s);
+ if ((s = dom.findAttr(node, "src-off")) != NULL)
+ fOffShader = inflate_shader(s);
+ (void)dom.findBool(node, "do-interp", &fDoInterp);
+}
+