diff options
author | Derek Sollenberger <djsollen@google.com> | 2011-06-06 17:02:24 -0400 |
---|---|---|
committer | Derek Sollenberger <djsollen@google.com> | 2011-06-07 14:00:04 -0400 |
commit | 0b15698a8c76bb8abc1b555c1d91892669b4118f (patch) | |
tree | 08732d5fbb7484ce7e10c65c96fb56294053073a /samplecode/SamplePathFill.cpp | |
parent | 9770b0f3d2b5d512daac50c2c9561d2c073cd8d2 (diff) | |
download | external_skia-0b15698a8c76bb8abc1b555c1d91892669b4118f.zip external_skia-0b15698a8c76bb8abc1b555c1d91892669b4118f.tar.gz external_skia-0b15698a8c76bb8abc1b555c1d91892669b4118f.tar.bz2 |
Skia Merge (revision 1510)
This CL includes bug fixes and closely mirrors the version of
Skia used in Chrome M13, which is likely to be our baseline for
ICS.
The CL also adds source files for the SampleApp which will allow
us to execute basic skia tests. The SampleApp requires the
utils/views directory in order to run.
Finally, we have included the PDF backend for Skia in order to
experiment with using it to generate PDF files for certain
applications.
Note: The SampleApp and PDF code are not built as part of libskia.
Change-Id: I1895ccfbd8074e25f19148cc7bd1b4af571fb307
Diffstat (limited to 'samplecode/SamplePathFill.cpp')
-rw-r--r-- | samplecode/SamplePathFill.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/samplecode/SamplePathFill.cpp b/samplecode/SamplePathFill.cpp new file mode 100644 index 0000000..845b7a8 --- /dev/null +++ b/samplecode/SamplePathFill.cpp @@ -0,0 +1,140 @@ +#include "SampleCode.h" +#include "SkView.h" +#include "SkCanvas.h" +#include "SkGraphics.h" +#include "SkRandom.h" +#include "SkBlurDrawLooper.h" +#include "SkGradientShader.h" + +typedef SkScalar (*MakePathProc)(SkPath*); + +static SkScalar make_frame(SkPath* path) { + SkRect r = { 10, 10, 630, 470 }; + path->addRoundRect(r, 15, 15); + + SkPaint paint; + paint.setStyle(SkPaint::kStroke_Style); + paint.setStrokeWidth(5); + paint.getFillPath(*path, path); + return 15; +} + +static SkScalar make_triangle(SkPath* path) { + static const int gCoord[] = { + 10, 20, 15, 5, 30, 30 + }; + path->moveTo(SkIntToScalar(gCoord[0]), SkIntToScalar(gCoord[1])); + path->lineTo(SkIntToScalar(gCoord[2]), SkIntToScalar(gCoord[3])); + path->lineTo(SkIntToScalar(gCoord[4]), SkIntToScalar(gCoord[5])); + path->close(); + path->offset(10, 0); + return SkIntToScalar(30); +} + +static SkScalar make_rect(SkPath* path) { + SkRect r = { 10, 10, 30, 30 }; + path->addRect(r); + path->offset(10, 0); + return SkIntToScalar(30); +} + +static SkScalar make_oval(SkPath* path) { + SkRect r = { 10, 10, 30, 30 }; + path->addOval(r); + path->offset(10, 0); + return SkIntToScalar(30); +} + +static SkScalar make_sawtooth(SkPath* path) { + SkScalar x = SkIntToScalar(20); + SkScalar y = SkIntToScalar(20); + const SkScalar x0 = x; + const SkScalar dx = SK_Scalar1 * 5; + const SkScalar dy = SK_Scalar1 * 10; + + path->moveTo(x, y); + for (int i = 0; i < 32; i++) { + x += dx; + path->lineTo(x, y - dy); + x += dx; + path->lineTo(x, y + dy); + } + path->lineTo(x, y + 2 * dy); + path->lineTo(x0, y + 2 * dy); + path->close(); + return SkIntToScalar(30); +} + +static SkScalar make_star(SkPath* path, int n) { + const SkScalar c = SkIntToScalar(45); + const SkScalar r = SkIntToScalar(20); + + SkScalar rad = -SK_ScalarPI / 2; + const SkScalar drad = (n >> 1) * SK_ScalarPI * 2 / n; + + path->moveTo(c, c - r); + for (int i = 1; i < n; i++) { + rad += drad; + SkScalar cosV, sinV = SkScalarSinCos(rad, &cosV); + path->lineTo(c + SkScalarMul(cosV, r), c + SkScalarMul(sinV, r)); + } + path->close(); + return r * 2 * 6 / 5; +} + +static SkScalar make_star_5(SkPath* path) { return make_star(path, 5); } +static SkScalar make_star_13(SkPath* path) { return make_star(path, 13); } + +static const MakePathProc gProcs[] = { + make_frame, + make_triangle, + make_rect, + make_oval, + make_sawtooth, + make_star_5, + make_star_13 +}; + +#define N SK_ARRAY_COUNT(gProcs) + +class PathFillView : public SampleView { + SkPath fPath[N]; + SkScalar fDY[N]; + +public: + PathFillView() { + for (size_t i = 0; i < N; i++) { + fDY[i] = gProcs[i](&fPath[i]); + } + this->setBGColor(0xFFDDDDDD); + } + +protected: + // overrides from SkEventSink + virtual bool onQuery(SkEvent* evt) { + if (SampleCode::TitleQ(*evt)) { + SampleCode::TitleR(evt, "PathFill"); + return true; + } + return this->INHERITED::onQuery(evt); + } + + virtual void onDrawContent(SkCanvas* canvas) { + SkPaint paint; + paint.setAntiAlias(true); + + for (size_t i = 0; i < N; i++) { + canvas->drawPath(fPath[i], paint); + canvas->translate(0, fDY[i]); + } + } + +private: + typedef SampleView INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static SkView* MyFactory() { return new PathFillView; } +static SkViewRegister reg(MyFactory); + |