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Diffstat (limited to 'samplecode/SampleDitherBitmap.cpp')
-rw-r--r-- | samplecode/SampleDitherBitmap.cpp | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/samplecode/SampleDitherBitmap.cpp b/samplecode/SampleDitherBitmap.cpp deleted file mode 100644 index 2f3de35fd6..0000000000 --- a/samplecode/SampleDitherBitmap.cpp +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright 2011 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "SampleCode.h" -#include "SkCanvas.h" -#include "SkColorPriv.h" -#include "SkGradientShader.h" -#include "SkPath.h" -#include "SkRegion.h" -#include "SkUtils.h" -#include "SkView.h" -#include "sk_tool_utils.h" - -static void draw_rect(SkCanvas* canvas, const SkRect& r, const SkPaint& p) { - canvas->drawRect(r, p); - - SkPaint frame(p); - frame.setShader(nullptr); - frame.setStyle(SkPaint::kStroke_Style); - canvas->drawRect(r, frame); -} - -static void draw_gradient(SkCanvas* canvas) { - SkRect r = { 0, 0, SkIntToScalar(256), SkIntToScalar(32) }; - SkPoint pts[] = { { r.fLeft, r.fTop }, { r.fRight, r.fTop } }; - SkColor colors[] = { 0xFF000000, 0xFFFF0000 }; - SkPaint p; - p.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkShader::kClamp_TileMode)); - draw_rect(canvas, r, p); - - canvas->translate(0, SkIntToScalar(40)); - p.setDither(true); - draw_rect(canvas, r, p); -} - -static bool test_pathregion() { - SkPath path; - SkRegion region; - path.moveTo(25071800.f, -141823808.f); - path.lineTo(25075500.f, -141824000.f); - path.lineTo(25075400.f, -141827712.f); - path.lineTo(25071810.f, -141827600.f); - path.close(); - - SkIRect bounds; - path.getBounds().round(&bounds); - SkRegion clip(bounds); - return region.setPath(path, clip); // <-- !! DOWN !! -} - -static SkBitmap make_bitmap() { - SkPMColor c[256]; - for (int i = 0; i < 256; i++) { - c[i] = SkPackARGB32(0xFF, i, 0, 0); - } - SkBitmap bm; - bm.allocPixels(SkImageInfo::Make(256, 32, kIndex_8_SkColorType, kPremul_SkAlphaType), - SkColorTable::Make(c, 256)); - - for (int y = 0; y < bm.height(); y++) { - uint8_t* p = bm.getAddr8(0, y); - for (int x = 0; x < 256; x++) { - p[x] = x; - } - } - return bm; -} - -class DitherBitmapView : public SampleView { - SkBitmap fBM8; - SkBitmap fBM32; - bool fResult; -public: - DitherBitmapView() { - fResult = test_pathregion(); - fBM8 = make_bitmap(); - sk_tool_utils::copy_to(&fBM32, kN32_SkColorType, fBM8); - - this->setBGColor(0xFFDDDDDD); - } - -protected: - // overrides from SkEventSink - virtual bool onQuery(SkEvent* evt) { - if (SampleCode::TitleQ(*evt)) { - SampleCode::TitleR(evt, "DitherBitmap"); - return true; - } - return this->INHERITED::onQuery(evt); - } - - static void setBitmapOpaque(SkBitmap* bm, bool isOpaque) { - bm->setAlphaType(isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType); - } - - static void draw2(SkCanvas* canvas, const SkBitmap& bm) { - SkPaint paint; - SkBitmap bitmap(bm); - - setBitmapOpaque(&bitmap, false); - paint.setDither(false); - canvas->drawBitmap(bitmap, 0, 0, &paint); - paint.setDither(true); - canvas->drawBitmap(bitmap, 0, SkIntToScalar(bm.height() + 10), &paint); - - setBitmapOpaque(&bitmap, true); - SkScalar x = SkIntToScalar(bm.width() + 10); - paint.setDither(false); - canvas->drawBitmap(bitmap, x, 0, &paint); - paint.setDither(true); - canvas->drawBitmap(bitmap, x, SkIntToScalar(bm.height() + 10), &paint); - } - - virtual void onDrawContent(SkCanvas* canvas) { - canvas->translate(SkIntToScalar(20), SkIntToScalar(20)); - - draw2(canvas, fBM8); - canvas->translate(0, SkIntToScalar(fBM8.height() *3)); - draw2(canvas, fBM32); - - canvas->translate(0, SkIntToScalar(fBM8.height() *3)); - draw_gradient(canvas); - - char resultTrue[] = "SkRegion::setPath returned true"; - char resultFalse[] = "SkRegion::setPath returned false"; - SkPaint p; - if (fResult) - canvas->drawText(resultTrue, sizeof(resultTrue) - 1, 0, 50, p); - else - canvas->drawText(resultFalse, sizeof(resultFalse) - 1, 0, 50, p); - } - -private: - typedef SampleView INHERITED; -}; - -////////////////////////////////////////////////////////////////////////////// - -static SkView* MyFactory() { return new DitherBitmapView; } -static SkViewRegister reg(MyFactory); |