2016-05-12 17:09:30 +00:00
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/*
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2014-06-21 17:54:17 +00:00
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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 "SkBitmap.h"
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2018-02-15 15:20:04 +00:00
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#include "SkBlendMode.h"
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2014-06-21 17:54:17 +00:00
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#include "SkCanvas.h"
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2018-02-15 15:20:04 +00:00
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#include "SkColorData.h"
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#include "SkColorPriv.h"
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#include "SkFloatingPoint.h"
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2017-12-04 21:06:03 +00:00
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#include "SkImage.h"
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2018-02-15 15:20:04 +00:00
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#include "SkMatrix.h"
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#include "SkPaint.h"
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#include "SkPath.h"
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#include "SkPixelRef.h"
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#include "SkPixmap.h"
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2018-07-17 16:30:40 +00:00
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#include "SkPoint3.h"
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2018-02-15 15:20:04 +00:00
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#include "SkRRect.h"
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2015-01-26 20:49:00 +00:00
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#include "SkShader.h"
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2018-01-02 20:40:29 +00:00
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#include "SkSurface.h"
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2015-04-14 19:17:27 +00:00
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#include "SkTextBlob.h"
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2018-02-15 15:20:04 +00:00
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#include "sk_tool_utils.h"
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#include <cmath>
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#include <cstring>
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#include <memory>
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2014-06-21 17:54:17 +00:00
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2014-07-31 12:58:44 +00:00
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namespace sk_tool_utils {
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2014-06-23 18:25:00 +00:00
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2018-02-07 21:05:29 +00:00
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const char* alphatype_name(SkAlphaType at) {
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switch (at) {
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case kUnknown_SkAlphaType: return "Unknown";
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case kOpaque_SkAlphaType: return "Opaque";
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case kPremul_SkAlphaType: return "Premul";
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case kUnpremul_SkAlphaType: return "Unpremul";
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}
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SkASSERT(false);
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return "unexpected alphatype";
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}
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2014-03-17 21:31:26 +00:00
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const char* colortype_name(SkColorType ct) {
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switch (ct) {
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case kUnknown_SkColorType: return "Unknown";
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case kAlpha_8_SkColorType: return "Alpha_8";
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case kRGB_565_SkColorType: return "RGB_565";
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2018-02-07 21:05:29 +00:00
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case kARGB_4444_SkColorType: return "ARGB_4444";
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2014-03-17 21:31:26 +00:00
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case kRGBA_8888_SkColorType: return "RGBA_8888";
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2018-02-07 21:05:29 +00:00
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case kRGB_888x_SkColorType: return "RGB_888x";
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2014-03-17 21:31:26 +00:00
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case kBGRA_8888_SkColorType: return "BGRA_8888";
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2018-02-07 21:05:29 +00:00
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case kRGBA_1010102_SkColorType: return "RGBA_1010102";
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case kRGB_101010x_SkColorType: return "RGB_101010x";
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case kGray_8_SkColorType: return "Gray_8";
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2017-02-08 15:47:28 +00:00
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case kRGBA_F16_SkColorType: return "RGBA_F16";
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2018-06-26 15:43:06 +00:00
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case kRGBA_F32_SkColorType: return "RGBA_F32";
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2014-03-17 21:31:26 +00:00
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}
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2018-02-07 21:05:29 +00:00
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SkASSERT(false);
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return "unexpected colortype";
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2014-03-17 21:31:26 +00:00
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}
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2015-06-15 13:51:08 +00:00
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SkColor color_to_565(SkColor color) {
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2018-08-16 14:17:03 +00:00
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// Not a good idea to use this function for greyscale colors...
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// it will add an obvious purple or green tint.
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SkASSERT(SkColorGetR(color) != SkColorGetG(color) ||
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SkColorGetR(color) != SkColorGetB(color) ||
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SkColorGetG(color) != SkColorGetB(color));
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2015-06-15 13:51:08 +00:00
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SkPMColor pmColor = SkPreMultiplyColor(color);
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2015-06-12 18:49:04 +00:00
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U16CPU color16 = SkPixel32ToPixel16(pmColor);
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2015-06-15 13:51:08 +00:00
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return SkPixel16ToColor(color16);
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2015-06-12 18:49:04 +00:00
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}
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2014-03-07 03:25:16 +00:00
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void write_pixels(SkCanvas* canvas, const SkBitmap& bitmap, int x, int y,
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SkColorType colorType, SkAlphaType alphaType) {
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SkBitmap tmp(bitmap);
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2014-09-03 18:54:58 +00:00
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const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType);
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2014-03-08 03:02:06 +00:00
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2014-03-07 03:25:16 +00:00
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canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
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}
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2018-02-08 19:10:40 +00:00
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void write_pixels(SkSurface* surface, const SkBitmap& src, int x, int y,
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SkColorType colorType, SkAlphaType alphaType) {
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const SkImageInfo info = SkImageInfo::Make(src.width(), src.height(), colorType, alphaType);
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surface->writePixels({info, src.getPixels(), src.rowBytes()}, x, y);
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}
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2016-03-09 02:50:00 +00:00
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sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size) {
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2015-01-26 20:49:00 +00:00
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SkBitmap bm;
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2016-09-28 21:02:10 +00:00
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bm.allocPixels(SkImageInfo::MakeS32(2 * size, 2 * size, kPremul_SkAlphaType));
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2015-01-26 20:49:00 +00:00
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bm.eraseColor(c1);
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bm.eraseArea(SkIRect::MakeLTRB(0, 0, size, size), c2);
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bm.eraseArea(SkIRect::MakeLTRB(size, size, 2 * size, 2 * size), c2);
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2016-03-09 02:50:00 +00:00
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return SkShader::MakeBitmapShader(
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2015-01-26 20:49:00 +00:00
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bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
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}
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2015-09-03 20:32:33 +00:00
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SkBitmap create_checkerboard_bitmap(int w, int h, SkColor c1, SkColor c2, int checkSize) {
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SkBitmap bitmap;
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2016-09-28 21:02:10 +00:00
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bitmap.allocPixels(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
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2015-09-03 20:32:33 +00:00
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SkCanvas canvas(bitmap);
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sk_tool_utils::draw_checkerboard(&canvas, c1, c2, checkSize);
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return bitmap;
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}
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2015-01-26 20:49:00 +00:00
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void draw_checkerboard(SkCanvas* canvas, SkColor c1, SkColor c2, int size) {
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SkPaint paint;
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2016-03-09 02:50:00 +00:00
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paint.setShader(create_checkerboard_shader(c1, c2, size));
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2016-10-06 00:33:02 +00:00
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paint.setBlendMode(SkBlendMode::kSrc);
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2015-01-26 20:49:00 +00:00
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canvas->drawPaint(paint);
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}
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2015-09-03 20:32:33 +00:00
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SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y,
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int textSize, const char* str) {
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SkBitmap bitmap;
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bitmap.allocN32Pixels(w, h);
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SkCanvas canvas(bitmap);
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setColor(c);
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paint.setTextSize(SkIntToScalar(textSize));
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canvas.clear(0x00000000);
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2017-04-28 19:35:12 +00:00
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canvas.drawString(str, SkIntToScalar(x), SkIntToScalar(y), paint);
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2015-09-03 20:32:33 +00:00
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2016-12-20 16:09:31 +00:00
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// Tag data as sRGB (without doing any color space conversion). Color-space aware configs
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// will process this correctly but legacy configs will render as if this returned N32.
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SkBitmap result;
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result.setInfo(SkImageInfo::MakeS32(w, h, kPremul_SkAlphaType));
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result.setPixelRef(sk_ref_sp(bitmap.pixelRef()), 0, 0);
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return result;
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2015-09-03 20:32:33 +00:00
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}
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2017-08-15 17:28:42 +00:00
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void add_to_text_blob_w_len(SkTextBlobBuilder* builder, const char* text, size_t len,
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const SkPaint& origPaint, SkScalar x, SkScalar y) {
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2015-04-14 19:17:27 +00:00
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SkPaint paint(origPaint);
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SkTDArray<uint16_t> glyphs;
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2015-08-27 14:41:13 +00:00
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glyphs.append(paint.textToGlyphs(text, len, nullptr));
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2015-04-14 19:17:27 +00:00
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paint.textToGlyphs(text, len, glyphs.begin());
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paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
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const SkTextBlobBuilder::RunBuffer& run = builder->allocRun(paint, glyphs.count(), x, y,
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2015-08-27 14:41:13 +00:00
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nullptr);
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2015-04-14 19:17:27 +00:00
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memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
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}
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2017-08-15 17:28:42 +00:00
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void add_to_text_blob(SkTextBlobBuilder* builder, const char* text,
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const SkPaint& origPaint, SkScalar x, SkScalar y) {
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add_to_text_blob_w_len(builder, text, strlen(text), origPaint, x, y);
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}
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2017-11-06 21:10:54 +00:00
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SkPath make_star(const SkRect& bounds, int numPts, int step) {
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SkPath path;
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path.setFillType(SkPath::kEvenOdd_FillType);
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path.moveTo(0,-1);
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for (int i = 1; i < numPts; ++i) {
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int idx = i*step;
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SkScalar theta = idx * 2*SK_ScalarPI/numPts + SK_ScalarPI/2;
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SkScalar x = SkScalarCos(theta);
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SkScalar y = -SkScalarSin(theta);
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path.lineTo(x, y);
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}
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path.transform(SkMatrix::MakeRectToRect(path.getBounds(), bounds, SkMatrix::kFill_ScaleToFit));
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return path;
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}
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2018-07-17 16:30:40 +00:00
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static inline void norm_to_rgb(SkBitmap* bm, int x, int y, const SkVector3& norm) {
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SkASSERT(SkScalarNearlyEqual(norm.length(), 1.0f));
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unsigned char r = static_cast<unsigned char>((0.5f * norm.fX + 0.5f) * 255);
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unsigned char g = static_cast<unsigned char>((-0.5f * norm.fY + 0.5f) * 255);
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unsigned char b = static_cast<unsigned char>((0.5f * norm.fZ + 0.5f) * 255);
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*bm->getAddr32(x, y) = SkPackARGB32(0xFF, r, g, b);
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}
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void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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const SkPoint halfSize = SkPoint::Make(dst.width() / 2.0f, dst.height() / 2.0f);
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SkVector3 norm;
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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norm.fX = (x + 0.5f - center.fX) / halfSize.fX;
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norm.fY = (y + 0.5f - center.fY) / halfSize.fY;
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SkScalar tmp = norm.fX * norm.fX + norm.fY * norm.fY;
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if (tmp >= 1.0f) {
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norm.set(0.0f, 0.0f, 1.0f);
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} else {
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norm.fZ = sqrtf(1.0f - tmp);
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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SkIRect inner = dst;
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inner.inset(dst.width()/4, dst.height()/4);
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SkPoint3 norm;
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const SkPoint3 left = SkPoint3::Make(-SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
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const SkPoint3 up = SkPoint3::Make(0.0f, -SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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const SkPoint3 right = SkPoint3::Make(SK_ScalarRoot2Over2, 0.0f, SK_ScalarRoot2Over2);
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const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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if (inner.contains(x, y)) {
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norm.set(0.0f, 0.0f, 1.0f);
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} else {
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SkScalar locX = x + 0.5f - center.fX;
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SkScalar locY = y + 0.5f - center.fY;
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if (locX >= 0.0f) {
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if (locY > 0.0f) {
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norm = locX >= locY ? right : down; // LR corner
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} else {
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norm = locX > -locY ? right : up; // UR corner
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}
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} else {
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if (locY > 0.0f) {
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norm = -locX > locY ? left : down; // LL corner
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} else {
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norm = locX > locY ? up : left; // UL corner
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}
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}
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst) {
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const SkPoint center = SkPoint::Make(dst.fLeft + (dst.width() / 2.0f),
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dst.fTop + (dst.height() / 2.0f));
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static const SkScalar k1OverRoot3 = 0.5773502692f;
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SkPoint3 norm;
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const SkPoint3 leftUp = SkPoint3::Make(-k1OverRoot3, -k1OverRoot3, k1OverRoot3);
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const SkPoint3 rightUp = SkPoint3::Make(k1OverRoot3, -k1OverRoot3, k1OverRoot3);
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const SkPoint3 down = SkPoint3::Make(0.0f, SK_ScalarRoot2Over2, SK_ScalarRoot2Over2);
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for (int y = dst.fTop; y < dst.fBottom; ++y) {
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for (int x = dst.fLeft; x < dst.fRight; ++x) {
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SkScalar locX = x + 0.5f - center.fX;
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SkScalar locY = y + 0.5f - center.fY;
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if (locX >= 0.0f) {
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if (locY > 0.0f) {
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norm = locX >= locY ? rightUp : down; // LR corner
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} else {
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norm = rightUp;
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}
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} else {
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if (locY > 0.0f) {
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norm = -locX > locY ? leftUp : down; // LL corner
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} else {
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norm = leftUp;
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}
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}
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norm_to_rgb(bm, x, y, norm);
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}
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}
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}
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2017-07-31 15:57:21 +00:00
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#if !defined(__clang__) && defined(_MSC_VER)
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2016-10-12 21:06:48 +00:00
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// MSVC takes ~2 minutes to compile this function with optimization.
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// We don't really care to wait that long for this function.
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#pragma optimize("", off)
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#endif
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2015-10-05 14:23:30 +00:00
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void make_big_path(SkPath& path) {
|
2018-02-15 15:20:04 +00:00
|
|
|
#include "BigPathBench.inc" // IWYU pragma: keep
|
2015-10-05 14:23:30 +00:00
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|
|
}
|
|
|
|
|
2017-04-28 15:15:22 +00:00
|
|
|
bool copy_to(SkBitmap* dst, SkColorType dstColorType, const SkBitmap& src) {
|
|
|
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SkPixmap srcPM;
|
|
|
|
if (!src.peekPixels(&srcPM)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
SkBitmap tmpDst;
|
|
|
|
SkImageInfo dstInfo = srcPM.info().makeColorType(dstColorType);
|
|
|
|
if (!tmpDst.setInfo(dstInfo)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2017-07-12 19:10:28 +00:00
|
|
|
if (!tmpDst.tryAllocPixels()) {
|
2017-04-28 15:15:22 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
SkPixmap dstPM;
|
|
|
|
if (!tmpDst.peekPixels(&dstPM)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!srcPM.readPixels(dstPM)) {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
dst->swap(tmpDst);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2017-01-18 16:49:33 +00:00
|
|
|
void copy_to_g8(SkBitmap* dst, const SkBitmap& src) {
|
|
|
|
SkASSERT(kBGRA_8888_SkColorType == src.colorType() ||
|
|
|
|
kRGBA_8888_SkColorType == src.colorType());
|
|
|
|
|
|
|
|
SkImageInfo grayInfo = src.info().makeColorType(kGray_8_SkColorType);
|
|
|
|
dst->allocPixels(grayInfo);
|
|
|
|
uint8_t* dst8 = (uint8_t*)dst->getPixels();
|
|
|
|
const uint32_t* src32 = (const uint32_t*)src.getPixels();
|
|
|
|
|
|
|
|
const int w = src.width();
|
|
|
|
const int h = src.height();
|
|
|
|
const bool isBGRA = (kBGRA_8888_SkColorType == src.colorType());
|
|
|
|
for (int y = 0; y < h; ++y) {
|
|
|
|
if (isBGRA) {
|
|
|
|
// BGRA
|
|
|
|
for (int x = 0; x < w; ++x) {
|
|
|
|
uint32_t s = src32[x];
|
|
|
|
dst8[x] = SkComputeLuminance((s >> 16) & 0xFF, (s >> 8) & 0xFF, s & 0xFF);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// RGBA
|
|
|
|
for (int x = 0; x < w; ++x) {
|
|
|
|
uint32_t s = src32[x];
|
|
|
|
dst8[x] = SkComputeLuminance(s & 0xFF, (s >> 8) & 0xFF, (s >> 16) & 0xFF);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
src32 = (const uint32_t*)((const char*)src32 + src.rowBytes());
|
|
|
|
dst8 += dst->rowBytes();
|
|
|
|
}
|
|
|
|
}
|
2016-08-04 19:35:46 +00:00
|
|
|
|
2017-08-08 19:48:54 +00:00
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
2018-09-20 16:47:39 +00:00
|
|
|
bool equal_pixels(const SkPixmap& a, const SkPixmap& b) {
|
2017-08-08 19:48:54 +00:00
|
|
|
if (a.width() != b.width() ||
|
|
|
|
a.height() != b.height() ||
|
2018-09-20 16:47:39 +00:00
|
|
|
a.colorType() != b.colorType())
|
2017-08-08 19:48:54 +00:00
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (int y = 0; y < a.height(); ++y) {
|
|
|
|
const char* aptr = (const char*)a.addr(0, y);
|
|
|
|
const char* bptr = (const char*)b.addr(0, y);
|
|
|
|
if (memcmp(aptr, bptr, a.width() * a.info().bytesPerPixel())) {
|
2018-09-20 16:47:39 +00:00
|
|
|
return false;
|
2017-08-08 19:48:54 +00:00
|
|
|
}
|
|
|
|
aptr += a.rowBytes();
|
|
|
|
bptr += b.rowBytes();
|
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2018-09-20 16:47:39 +00:00
|
|
|
bool equal_pixels(const SkBitmap& bm0, const SkBitmap& bm1) {
|
2017-08-08 19:48:54 +00:00
|
|
|
SkPixmap pm0, pm1;
|
2018-09-20 16:47:39 +00:00
|
|
|
return bm0.peekPixels(&pm0) && bm1.peekPixels(&pm1) && equal_pixels(pm0, pm1);
|
2017-12-04 21:06:03 +00:00
|
|
|
}
|
|
|
|
|
2018-09-20 16:47:39 +00:00
|
|
|
bool equal_pixels(const SkImage* a, const SkImage* b) {
|
2017-12-04 21:06:03 +00:00
|
|
|
// ensure that peekPixels will succeed
|
|
|
|
auto imga = a->makeRasterImage();
|
|
|
|
auto imgb = b->makeRasterImage();
|
|
|
|
|
|
|
|
SkPixmap pm0, pm1;
|
2018-09-20 16:47:39 +00:00
|
|
|
return imga->peekPixels(&pm0) && imgb->peekPixels(&pm1) && equal_pixels(pm0, pm1);
|
2017-08-08 19:48:54 +00:00
|
|
|
}
|
2018-01-02 20:40:29 +00:00
|
|
|
|
2018-09-05 18:41:40 +00:00
|
|
|
sk_sp<SkSurface> makeSurface(SkCanvas* canvas, const SkImageInfo& info,
|
|
|
|
const SkSurfaceProps* props) {
|
|
|
|
auto surf = canvas->makeSurface(info, props);
|
|
|
|
if (!surf) {
|
|
|
|
surf = SkSurface::MakeRaster(info, props);
|
|
|
|
}
|
|
|
|
return surf;
|
|
|
|
}
|
2014-06-21 17:54:17 +00:00
|
|
|
} // namespace sk_tool_utils
|