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564 lines
19 KiB
564 lines
19 KiB
/*
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* Copyright 2014 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 "gm.h"
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#include "sk_tool_utils.h"
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#include "SkColorFilter.h"
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#include "SkMultiPictureDraw.h"
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#include "SkPath.h"
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#include "SkPictureRecorder.h"
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#include "SkSurface.h"
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constexpr SkScalar kRoot3Over2 = 0.86602545f; // sin(60)
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constexpr SkScalar kRoot3 = 1.73205081f;
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constexpr int kHexSide = 30;
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constexpr int kNumHexX = 6;
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constexpr int kNumHexY = 6;
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constexpr int kPicWidth = kNumHexX * kHexSide;
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constexpr int kPicHeight = (int)((kNumHexY - 0.5f) * 2 * kHexSide * kRoot3Over2 + 0.5f);
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constexpr SkScalar kInset = 20.0f;
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constexpr int kNumPictures = 4;
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constexpr int kTriSide = 40;
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// Create a hexagon centered at (originX, originY)
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static SkPath make_hex_path(SkScalar originX, SkScalar originY) {
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SkPath hex;
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hex.moveTo(originX-kHexSide, originY);
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hex.rLineTo(SkScalarHalf(kHexSide), kRoot3Over2 * kHexSide);
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hex.rLineTo(SkIntToScalar(kHexSide), 0);
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hex.rLineTo(SkScalarHalf(kHexSide), -kHexSide * kRoot3Over2);
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hex.rLineTo(-SkScalarHalf(kHexSide), -kHexSide * kRoot3Over2);
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hex.rLineTo(-SkIntToScalar(kHexSide), 0);
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hex.close();
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return hex;
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}
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// Make a picture that is a tiling of the plane with stroked hexagons where
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// each hexagon is in its own layer. The layers are to exercise Ganesh's
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// layer hoisting.
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static sk_sp<SkPicture> make_hex_plane_picture(SkColor fillColor) {
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// Create a hexagon with its center at the origin
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SkPath hex = make_hex_path(0, 0);
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SkPaint fill;
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fill.setStyle(SkPaint::kFill_Style);
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fill.setColor(fillColor);
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SkPaint stroke;
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stroke.setStyle(SkPaint::kStroke_Style);
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stroke.setStrokeWidth(3);
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
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SkIntToScalar(kPicHeight),
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&bbhFactory);
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SkScalar xPos, yPos = 0;
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for (int y = 0; y < kNumHexY; ++y) {
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xPos = 0;
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for (int x = 0; x < kNumHexX; ++x) {
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canvas->saveLayer(nullptr, nullptr);
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canvas->translate(xPos, yPos + ((x % 2) ? kRoot3Over2 * kHexSide : 0));
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canvas->drawPath(hex, fill);
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canvas->drawPath(hex, stroke);
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canvas->restore();
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xPos += 1.5f * kHexSide;
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}
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yPos += 2 * kHexSide * kRoot3Over2;
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}
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return recorder.finishRecordingAsPicture();
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}
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// Create a picture that consists of a single large layer that is tiled
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// with hexagons.
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// This is intended to exercise the layer hoisting code's clip handling (in
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// tile mode).
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static sk_sp<SkPicture> make_single_layer_hex_plane_picture() {
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// Create a hexagon with its center at the origin
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SkPath hex = make_hex_path(0, 0);
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SkPaint whiteFill;
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whiteFill.setStyle(SkPaint::kFill_Style);
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whiteFill.setColor(SK_ColorWHITE);
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SkPaint greyFill;
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greyFill.setStyle(SkPaint::kFill_Style);
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greyFill.setColor(SK_ColorLTGRAY);
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SkPaint stroke;
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stroke.setStyle(SkPaint::kStroke_Style);
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stroke.setStrokeWidth(3);
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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constexpr SkScalar kBig = 10000.0f;
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SkCanvas* canvas = recorder.beginRecording(kBig, kBig, &bbhFactory);
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canvas->saveLayer(nullptr, nullptr);
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SkScalar xPos = 0.0f, yPos = 0.0f;
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for (int y = 0; yPos < kBig; ++y) {
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xPos = 0;
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for (int x = 0; xPos < kBig; ++x) {
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canvas->save();
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canvas->translate(xPos, yPos + ((x % 2) ? kRoot3Over2 * kHexSide : 0));
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// The color of the filled hex is swapped to yield a different
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// pattern in each tile. This allows an error in layer hoisting (e.g.,
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// the clip isn't blocking cache reuse) to cause a visual discrepancy.
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canvas->drawPath(hex, ((x+y) % 3) ? whiteFill : greyFill);
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canvas->drawPath(hex, stroke);
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canvas->restore();
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xPos += 1.5f * kHexSide;
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}
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yPos += 2 * kHexSide * kRoot3Over2;
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}
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canvas->restore();
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return recorder.finishRecordingAsPicture();
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}
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// Make an equilateral triangle path with its top corner at (originX, originY)
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static SkPath make_tri_path(SkScalar originX, SkScalar originY) {
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SkPath tri;
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tri.moveTo(originX, originY);
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tri.rLineTo(SkScalarHalf(kTriSide), 1.5f * kTriSide / kRoot3);
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tri.rLineTo(-kTriSide, 0);
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tri.close();
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return tri;
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}
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static sk_sp<SkPicture> make_tri_picture() {
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SkPath tri = make_tri_path(SkScalarHalf(kTriSide), 0);
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SkPaint fill;
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fill.setStyle(SkPaint::kFill_Style);
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fill.setColor(SK_ColorLTGRAY);
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SkPaint stroke;
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stroke.setStyle(SkPaint::kStroke_Style);
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stroke.setStrokeWidth(3);
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
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SkIntToScalar(kPicHeight),
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&bbhFactory);
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SkRect r = tri.getBounds();
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r.outset(2.0f, 2.0f); // outset for stroke
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canvas->clipRect(r);
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// The saveLayer/restore block is to exercise layer hoisting
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canvas->saveLayer(nullptr, nullptr);
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canvas->drawPath(tri, fill);
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canvas->drawPath(tri, stroke);
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canvas->restore();
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return recorder.finishRecordingAsPicture();
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}
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static sk_sp<SkPicture> make_sub_picture(const SkPicture* tri) {
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
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SkIntToScalar(kPicHeight),
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&bbhFactory);
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canvas->scale(1.0f/2.0f, 1.0f/2.0f);
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canvas->save();
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canvas->translate(SkScalarHalf(kTriSide), 0);
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canvas->drawPicture(tri);
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canvas->restore();
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canvas->save();
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canvas->translate(SkIntToScalar(kTriSide), 1.5f * kTriSide / kRoot3);
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canvas->drawPicture(tri);
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canvas->restore();
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canvas->save();
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canvas->translate(0, 1.5f * kTriSide / kRoot3);
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canvas->drawPicture(tri);
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canvas->restore();
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return recorder.finishRecordingAsPicture();
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}
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// Create a Sierpinkski-like picture that starts with a top row with a picture
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// that just contains a triangle. Subsequent rows take the prior row's picture,
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// shrinks it and replicates it 3 times then draws and appropriate number of
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// copies of it.
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static sk_sp<SkPicture> make_sierpinski_picture() {
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sk_sp<SkPicture> pic(make_tri_picture());
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
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SkIntToScalar(kPicHeight),
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&bbhFactory);
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constexpr int kNumLevels = 4;
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for (int i = 0; i < kNumLevels; ++i) {
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canvas->save();
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canvas->translate(kPicWidth/2 - (i+1) * (kTriSide/2.0f), 0.0f);
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for (int j = 0; j < i+1; ++j) {
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canvas->drawPicture(pic);
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canvas->translate(SkIntToScalar(kTriSide), 0);
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}
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canvas->restore();
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pic = make_sub_picture(pic.get());
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canvas->translate(0, 1.5f * kTriSide / kRoot3);
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}
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return recorder.finishRecordingAsPicture();
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}
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static sk_sp<SkSurface> create_compat_surface(SkCanvas* canvas, int width, int height) {
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SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
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return sk_tool_utils::makeSurface(canvas, info);
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}
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// This class stores the information required to compose all the result
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// fragments potentially generated by the MultiPictureDraw object
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class ComposeStep {
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public:
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ComposeStep() : fX(0.0f), fY(0.0f), fPaint(nullptr) { }
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~ComposeStep() {
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delete fPaint;
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}
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sk_sp<SkSurface> fSurf;
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SkScalar fX;
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SkScalar fY;
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SkPaint* fPaint;
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};
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typedef void (*PFContentMtd)(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]);
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// Just a single picture with no clip
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static void no_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[0]);
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}
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// Two pictures with a rect clip on the second one
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static void rect_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[0]);
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SkRect rect = pictures[0]->cullRect();
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rect.inset(kInset, kInset);
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canvas->clipRect(rect);
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canvas->drawPicture(pictures[1]);
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}
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// Two pictures with a round rect clip on the second one
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static void rrect_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[0]);
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SkRect rect = pictures[0]->cullRect();
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rect.inset(kInset, kInset);
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SkRRect rrect;
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rrect.setRectXY(rect, kInset, kInset);
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canvas->clipRRect(rrect);
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canvas->drawPicture(pictures[1]);
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}
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// Two pictures with a clip path on the second one
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static void path_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[0]);
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// Create a hexagon centered on the middle of the hex grid
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SkPath hex = make_hex_path((kNumHexX / 2.0f) * kHexSide, kNumHexY * kHexSide * kRoot3Over2);
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canvas->clipPath(hex);
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canvas->drawPicture(pictures[1]);
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}
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// Two pictures with an inverse clip path on the second one
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static void invpath_clip(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[0]);
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// Create a hexagon centered on the middle of the hex grid
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SkPath hex = make_hex_path((kNumHexX / 2.0f) * kHexSide, kNumHexY * kHexSide * kRoot3Over2);
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hex.setFillType(SkPath::kInverseEvenOdd_FillType);
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canvas->clipPath(hex);
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canvas->drawPicture(pictures[1]);
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}
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// Reuse a single base (triangular) picture a _lot_ (rotated, scaled and translated).
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static void sierpinski(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->save();
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canvas->drawPicture(pictures[2]);
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canvas->rotate(180.0f);
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canvas->translate(-SkIntToScalar(kPicWidth), -SkIntToScalar(kPicHeight));
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canvas->drawPicture(pictures[2]);
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canvas->restore();
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}
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static void big_layer(SkCanvas* canvas, const SkPicture* pictures[kNumPictures]) {
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canvas->drawPicture(pictures[3]);
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}
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constexpr PFContentMtd gContentMthds[] = {
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no_clip,
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rect_clip,
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rrect_clip,
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path_clip,
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invpath_clip,
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sierpinski,
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big_layer,
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};
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static void create_content(SkMultiPictureDraw* mpd, PFContentMtd pfGen,
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const SkPicture* pictures[kNumPictures],
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SkCanvas* dest, const SkMatrix& xform) {
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sk_sp<SkPicture> composite;
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{
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SkPictureRecorder recorder;
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SkRTreeFactory bbhFactory;
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SkCanvas* pictureCanvas = recorder.beginRecording(SkIntToScalar(kPicWidth),
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SkIntToScalar(kPicHeight),
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&bbhFactory);
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(*pfGen)(pictureCanvas, pictures);
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composite = recorder.finishRecordingAsPicture();
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}
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mpd->add(dest, composite.get(), &xform);
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}
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typedef void(*PFLayoutMtd)(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd,
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PFContentMtd pfGen, const SkPicture* pictures[kNumPictures],
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SkTArray<ComposeStep>* composeSteps);
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// Draw the content into a single canvas
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static void simple(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd,
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PFContentMtd pfGen,
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const SkPicture* pictures[kNumPictures],
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SkTArray<ComposeStep> *composeSteps) {
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ComposeStep& step = composeSteps->push_back();
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step.fSurf = create_compat_surface(finalCanvas, kPicWidth, kPicHeight);
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SkCanvas* subCanvas = step.fSurf->getCanvas();
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create_content(mpd, pfGen, pictures, subCanvas, SkMatrix::I());
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}
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// Draw the content into multiple canvases/tiles
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static void tiled(SkCanvas* finalCanvas, SkMultiPictureDraw* mpd,
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PFContentMtd pfGen,
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const SkPicture* pictures[kNumPictures],
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SkTArray<ComposeStep> *composeSteps) {
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const int kNumTilesX = 2;
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const int kNumTilesY = 2;
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const int kTileWidth = kPicWidth / kNumTilesX;
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const int kTileHeight = kPicHeight / kNumTilesY;
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SkASSERT(kPicWidth == kNumTilesX * kTileWidth);
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SkASSERT(kPicHeight == kNumTilesY * kTileHeight);
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const SkColor colors[kNumTilesX][kNumTilesY] = {
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{ SK_ColorCYAN, SK_ColorMAGENTA },
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{ SK_ColorYELLOW, SK_ColorGREEN }
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};
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for (int y = 0; y < kNumTilesY; ++y) {
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for (int x = 0; x < kNumTilesX; ++x) {
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ComposeStep& step = composeSteps->push_back();
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step.fX = SkIntToScalar(x*kTileWidth);
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step.fY = SkIntToScalar(y*kTileHeight);
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step.fPaint = new SkPaint;
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step.fPaint->setColorFilter(
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SkColorFilter::MakeModeFilter(colors[x][y], SkBlendMode::kModulate));
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step.fSurf = create_compat_surface(finalCanvas, kTileWidth, kTileHeight);
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SkCanvas* subCanvas = step.fSurf->getCanvas();
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const SkMatrix trans = SkMatrix::MakeTrans(-SkIntToScalar(x*kTileWidth),
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-SkIntToScalar(y*kTileHeight));
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create_content(mpd, pfGen, pictures, subCanvas, trans);
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}
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}
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}
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constexpr PFLayoutMtd gLayoutMthds[] = { simple, tiled };
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namespace skiagm {
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/**
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* This GM exercises the SkMultiPictureDraw object. It tests the
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* cross product of:
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* tiled vs. all-at-once rendering (e.g., into many or just 1 canvas)
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* different clips (e.g., none, rect, rrect)
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* single vs. multiple pictures (e.g., normal vs. picture-pile-style content)
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*/
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class MultiPictureDraw : public GM {
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public:
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enum Content {
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kNoClipSingle_Content,
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kRectClipMulti_Content,
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kRRectClipMulti_Content,
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kPathClipMulti_Content,
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kInvPathClipMulti_Content,
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kSierpinski_Content,
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kBigLayer_Content,
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kLast_Content = kBigLayer_Content
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};
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const int kContentCnt = kLast_Content + 1;
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enum Layout {
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kSimple_Layout,
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kTiled_Layout,
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kLast_Layout = kTiled_Layout
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};
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const int kLayoutCnt = kLast_Layout + 1;
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MultiPictureDraw(Content content, Layout layout) : fContent(content), fLayout(layout) {
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SkASSERT(SK_ARRAY_COUNT(gLayoutMthds) == kLayoutCnt);
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SkASSERT(SK_ARRAY_COUNT(gContentMthds) == kContentCnt);
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for (int i = 0; i < kNumPictures; ++i) {
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fPictures[i] = nullptr;
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}
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}
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~MultiPictureDraw() override {
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for (int i = 0; i < kNumPictures; ++i) {
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SkSafeUnref(fPictures[i]);
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}
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}
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protected:
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Content fContent;
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Layout fLayout;
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const SkPicture* fPictures[kNumPictures];
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void onOnceBeforeDraw() override {
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fPictures[0] = make_hex_plane_picture(SK_ColorWHITE).release();
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fPictures[1] = make_hex_plane_picture(SK_ColorGRAY).release();
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fPictures[2] = make_sierpinski_picture().release();
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fPictures[3] = make_single_layer_hex_plane_picture().release();
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}
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void onDraw(SkCanvas* canvas) override {
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SkMultiPictureDraw mpd;
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SkTArray<ComposeStep> composeSteps;
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// Fill up the MultiPictureDraw
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(*gLayoutMthds[fLayout])(canvas, &mpd,
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gContentMthds[fContent],
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fPictures, &composeSteps);
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mpd.draw();
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// Compose all the drawn canvases into the final canvas
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for (int i = 0; i < composeSteps.count(); ++i) {
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const ComposeStep& step = composeSteps[i];
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canvas->drawImage(step.fSurf->makeImageSnapshot().get(),
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step.fX, step.fY, step.fPaint);
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}
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}
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SkISize onISize() override { return SkISize::Make(kPicWidth, kPicHeight); }
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SkString onShortName() override {
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const char* gContentNames[] = {
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"noclip", "rectclip", "rrectclip", "pathclip",
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"invpathclip", "sierpinski", "biglayer"
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};
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const char* gLayoutNames[] = { "simple", "tiled" };
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|
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SkASSERT(SK_ARRAY_COUNT(gLayoutNames) == kLayoutCnt);
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SkASSERT(SK_ARRAY_COUNT(gContentNames) == kContentCnt);
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|
|
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SkString name("multipicturedraw_");
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|
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name.append(gContentNames[fContent]);
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name.append("_");
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name.append(gLayoutNames[fLayout]);
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return name;
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|
}
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|
|
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bool runAsBench() const override { return true; }
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|
|
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private:
|
|
typedef GM INHERITED;
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|
};
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|
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kNoClipSingle_Content,
|
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MultiPictureDraw::kSimple_Layout);)
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|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRectClipMulti_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRRectClipMulti_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kPathClipMulti_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kInvPathClipMulti_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kSierpinski_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kBigLayer_Content,
|
|
MultiPictureDraw::kSimple_Layout);)
|
|
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kNoClipSingle_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRectClipMulti_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kRRectClipMulti_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kPathClipMulti_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kInvPathClipMulti_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kSierpinski_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
DEF_GM(return new MultiPictureDraw(MultiPictureDraw::kBigLayer_Content,
|
|
MultiPictureDraw::kTiled_Layout);)
|
|
}
|