aboutsummaryrefslogtreecommitdiffhomepage
path: root/samplecode/SampleDitherBitmap.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'samplecode/SampleDitherBitmap.cpp')
-rw-r--r--samplecode/SampleDitherBitmap.cpp144
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);