2014-03-07 03:25:16 +00:00
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/*
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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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#ifndef sk_tool_utils_DEFINED
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#define sk_tool_utils_DEFINED
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2015-01-26 20:49:00 +00:00
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#include "SkColor.h"
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2015-03-23 12:46:51 +00:00
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#include "SkImageEncoder.h"
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2014-06-21 17:54:17 +00:00
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#include "SkImageInfo.h"
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2015-03-23 12:46:51 +00:00
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#include "SkPixelSerializer.h"
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2015-10-19 19:15:55 +00:00
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#include "SkRandom.h"
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2016-11-30 22:07:59 +00:00
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#include "SkStream.h"
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#include "SkTDArray.h"
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2014-06-23 18:25:00 +00:00
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#include "SkTypeface.h"
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2014-03-07 03:25:16 +00:00
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2014-07-31 12:58:44 +00:00
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class SkBitmap;
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class SkCanvas;
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class SkColorFilter;
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class SkImage;
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class SkPaint;
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class SkPath;
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class SkRRect;
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class SkShader;
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class SkTestFont;
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class SkTextBlobBuilder;
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2014-03-18 03:02:11 +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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2014-03-17 21:31:26 +00:00
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const char* colortype_name(SkColorType);
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2015-07-24 18:08:01 +00:00
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/**
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* Map opaque colors from 8888 to 565.
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*/
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SkColor color_to_565(SkColor color);
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/**
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* Return a color emoji typeface if available.
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*/
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2016-05-12 17:09:30 +00:00
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sk_sp<SkTypeface> emoji_typeface();
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/**
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* If the platform supports color emoji, return sample text the emoji can render.
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*/
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2015-07-21 19:27:36 +00:00
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const char* emoji_sample_text();
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/**
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* Returns a string describing the platform font manager, if we're using one, otherwise "".
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*/
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const char* platform_font_manager();
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2015-07-24 18:08:01 +00:00
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/**
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* Sets the paint to use a platform-independent text renderer
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*/
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2015-08-27 14:41:13 +00:00
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void set_portable_typeface(SkPaint* paint, const char* name = nullptr,
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SkFontStyle style = SkFontStyle());
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/**
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* Returns a platform-independent text renderer.
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*/
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2016-05-31 18:42:36 +00:00
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sk_sp<SkTypeface> create_portable_typeface(const char* name, SkFontStyle style);
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2015-07-24 18:08:01 +00:00
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2015-06-15 13:48:30 +00:00
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/** Call to clean up portable font references. */
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void release_portable_typefaces();
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2014-06-23 18:25:00 +00:00
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2014-03-07 03:25:16 +00:00
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/**
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* Call canvas->writePixels() by using the pixels from bitmap, but with an info that claims
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* the pixels are colorType + alphaType
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*/
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void write_pixels(SkCanvas*, const SkBitmap&, int x, int y, SkColorType, SkAlphaType);
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2017-08-08 19:48:54 +00:00
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/**
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* Returns true iff all of the pixels between the two images differ by <= the maxDiff value
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* per component.
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*
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* If the configs differ, return false.
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*
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* If the colorType is half-float, then maxDiff is interpreted as 0..255 --> 0..1
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*/
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2017-12-04 21:06:03 +00:00
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bool equal_pixels(const SkPixmap&, const SkPixmap&, unsigned maxDiff = 0,
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bool respectColorSpaces = false);
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bool equal_pixels(const SkBitmap&, const SkBitmap&, unsigned maxDiff = 0,
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bool respectColorSpaces = false);
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bool equal_pixels(const SkImage* a, const SkImage* b, unsigned maxDiff,
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bool respectColorSpaces = false);
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2014-07-31 12:58:44 +00:00
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// private to sk_tool_utils
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sk_sp<SkTypeface> create_font(const char* name, SkFontStyle);
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2014-07-31 12:58:44 +00:00
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2015-01-26 20:49:00 +00:00
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/** Returns a newly created CheckerboardShader. */
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sk_sp<SkShader> create_checkerboard_shader(SkColor c1, SkColor c2, int size);
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/** Draw a checkerboard pattern in the current canvas, restricted to
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the current clip, using SkXfermode::kSrc_Mode. */
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void draw_checkerboard(SkCanvas* canvas,
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SkColor color1,
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SkColor color2,
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int checkSize);
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/** Make it easier to create a bitmap-based checkerboard */
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SkBitmap create_checkerboard_bitmap(int w, int h,
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SkColor c1, SkColor c2,
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int checkSize);
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/** A default checkerboard. */
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inline void draw_checkerboard(SkCanvas* canvas) {
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sk_tool_utils::draw_checkerboard(canvas, 0xFF999999, 0xFF666666, 8);
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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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// A helper for inserting a drawtext call into a SkTextBlobBuilder
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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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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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2017-11-06 21:10:54 +00:00
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// Constructs a star by walking a 'numPts'-sided regular polygon with even/odd fill:
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//
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// moveTo(pts[0]);
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// lineTo(pts[step % numPts]);
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// ...
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// lineTo(pts[(step * (N - 1)) % numPts]);
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//
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// numPts=5, step=2 will produce a classic five-point star.
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//
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// numPts and step must be co-prime.
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SkPath make_star(const SkRect& bounds, int numPts = 5, int step = 2);
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2015-10-05 14:23:30 +00:00
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void make_big_path(SkPath& path);
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2015-10-19 13:39:17 +00:00
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// Return a blurred version of 'src'. This doesn't use a separable filter
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// so it is slow!
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SkBitmap slow_blur(const SkBitmap& src, float sigma);
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2016-08-04 16:03:19 +00:00
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SkRect compute_central_occluder(const SkRRect& rr);
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2016-08-04 19:35:46 +00:00
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SkRect compute_widest_occluder(const SkRRect& rr);
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SkRect compute_tallest_occluder(const SkRRect& rr);
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2016-08-04 16:03:19 +00:00
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2015-10-19 19:15:55 +00:00
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// A helper object to test the topological sorting code (TopoSortBench.cpp & TopoSortTest.cpp)
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class TopoTestNode {
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public:
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TopoTestNode(int id) : fID(id), fOutputPos(-1), fTempMark(false) { }
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void dependsOn(TopoTestNode* src) {
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*fDependencies.append() = src;
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}
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int id() const { return fID; }
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void reset() { fOutputPos = -1; }
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int outputPos() const { return fOutputPos; }
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// check that the topological sort is valid for this node
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bool check() {
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if (-1 == fOutputPos) {
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return false;
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}
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for (int i = 0; i < fDependencies.count(); ++i) {
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if (-1 == fDependencies[i]->outputPos()) {
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return false;
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}
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// This node should've been output after all the nodes on which it depends
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if (fOutputPos < fDependencies[i]->outputPos()) {
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return false;
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}
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}
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return true;
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}
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// The following 7 methods are needed by the topological sort
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static void SetTempMark(TopoTestNode* node) { node->fTempMark = true; }
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static void ResetTempMark(TopoTestNode* node) { node->fTempMark = false; }
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static bool IsTempMarked(TopoTestNode* node) { return node->fTempMark; }
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static void Output(TopoTestNode* node, int outputPos) {
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SkASSERT(-1 != outputPos);
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node->fOutputPos = outputPos;
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}
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static bool WasOutput(TopoTestNode* node) { return (-1 != node->fOutputPos); }
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static int NumDependencies(TopoTestNode* node) { return node->fDependencies.count(); }
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static TopoTestNode* Dependency(TopoTestNode* node, int index) {
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return node->fDependencies[index];
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}
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// Helper functions for TopoSortBench & TopoSortTest
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static void AllocNodes(SkTDArray<TopoTestNode*>* graph, int num) {
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graph->setReserve(num);
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for (int i = 0; i < num; ++i) {
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*graph->append() = new TopoTestNode(i);
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}
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}
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static void DeallocNodes(SkTDArray<TopoTestNode*>* graph) {
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for (int i = 0; i < graph->count(); ++i) {
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delete (*graph)[i];
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}
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}
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#ifdef SK_DEBUG
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static void Print(const SkTDArray<TopoTestNode*>& graph) {
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for (int i = 0; i < graph.count(); ++i) {
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SkDebugf("%d, ", graph[i]->id());
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}
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SkDebugf("\n");
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}
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#endif
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// randomize the array
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static void Shuffle(SkTDArray<TopoTestNode*>* graph, SkRandom* rand) {
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for (int i = graph->count()-1; i > 0; --i) {
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int swap = rand->nextU() % (i+1);
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TopoTestNode* tmp = (*graph)[i];
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(*graph)[i] = (*graph)[swap];
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(*graph)[swap] = tmp;
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}
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}
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private:
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int fID;
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int fOutputPos;
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bool fTempMark;
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SkTDArray<TopoTestNode*> fDependencies;
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};
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2016-11-23 15:55:18 +00:00
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template <typename T>
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inline bool EncodeImageToFile(const char* path, const T& src, SkEncodedImageFormat f, int q) {
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SkFILEWStream file(path);
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return file.isValid() && SkEncodeImage(&file, src, f, q);
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}
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template <typename T>
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inline sk_sp<SkData> EncodeImageToData(const T& src, SkEncodedImageFormat f, int q) {
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SkDynamicMemoryWStream buf;
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return SkEncodeImage(&buf, src , f, q) ? buf.detachAsData() : nullptr;
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}
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/**
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* Uses SkEncodeImage to serialize images that are not already
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* encoded as SkEncodedImageFormat::kPNG images.
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*/
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inline sk_sp<SkPixelSerializer> MakePixelSerializer() {
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struct EncodeImagePixelSerializer final : SkPixelSerializer {
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bool onUseEncodedData(const void*, size_t) override { return true; }
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SkData* onEncode(const SkPixmap& pmap) override {
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return EncodeImageToData(pmap, SkEncodedImageFormat::kPNG, 100).release();
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}
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};
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return sk_make_sp<EncodeImagePixelSerializer>();
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}
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2017-01-18 16:49:33 +00:00
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2017-04-28 15:15:22 +00:00
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bool copy_to(SkBitmap* dst, SkColorType dstCT, const SkBitmap& src);
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2017-01-18 16:49:33 +00:00
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void copy_to_g8(SkBitmap* dst, const SkBitmap& src);
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2014-06-21 17:54:17 +00:00
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} // namespace sk_tool_utils
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#endif // sk_tool_utils_DEFINED
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