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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef sk_tool_utils_DEFINED
#define sk_tool_utils_DEFINED
#include "SkColor.h"
#include "SkImageEncoder.h"
#include "SkImageInfo.h"
#include "SkPixelSerializer.h"
#include "SkRandom.h"
#include "SkTDArray.h"
#include "SkTypeface.h"
class SkBitmap;
class SkCanvas;
class SkPaint;
class SkPath;
class SkShader;
class SkTestFont;
class SkTextBlobBuilder;
namespace sk_tool_utils {
const char* colortype_name(SkColorType);
/**
* Map opaque colors from 8888 to 565.
*/
SkColor color_to_565(SkColor color);
/**
* Return a color emoji typeface if available.
*/
void emoji_typeface(SkAutoTUnref<SkTypeface>* );
/**
* If the platform supports color emoji, return sample text the emoji can render.
*/
const char* emoji_sample_text();
/**
* If the platform supports color emoji, return the type (i.e. "CBDT", "SBIX", "").
*/
const char* platform_os_emoji();
/**
* Return the platform name with the version number ("Mac10.9", "Win8", etc.) if available.
*/
const char* platform_os_name();
/**
* Return the platform name without the version number ("Mac", "Win", etc.) if available.
*/
SkString major_platform_os_name();
/**
* Return the platform extra config (e.g. "GDI") if available.
*/
const char* platform_extra_config(const char* config);
/**
* Map serif, san-serif, and monospace to the platform-specific font name.
*/
const char* platform_font_name(const char* name);
/**
* Sets the paint to use a platform-independent text renderer
*/
void set_portable_typeface(SkPaint* paint, const char* name = nullptr,
SkTypeface::Style style = SkTypeface::kNormal);
/**
* Returns a platform-independent text renderer.
*/
SkTypeface* create_portable_typeface(const char* name, SkTypeface::Style style);
/** Call to clean up portable font references. */
void release_portable_typefaces();
/**
* Call canvas->writePixels() by using the pixels from bitmap, but with an info that claims
* the pixels are colorType + alphaType
*/
void write_pixels(SkCanvas*, const SkBitmap&, int x, int y, SkColorType, SkAlphaType);
// private to sk_tool_utils
SkTypeface* create_font(const char* name, SkTypeface::Style);
/** Returns a newly created CheckerboardShader. */
SkShader* create_checkerboard_shader(SkColor c1, SkColor c2, int size);
/** Draw a checkerboard pattern in the current canvas, restricted to
the current clip, using SkXfermode::kSrc_Mode. */
void draw_checkerboard(SkCanvas* canvas,
SkColor color1,
SkColor color2,
int checkSize);
/** Make it easier to create a bitmap-based checkerboard */
SkBitmap create_checkerboard_bitmap(int w, int h,
SkColor c1, SkColor c2,
int checkSize);
/** A default checkerboard. */
inline void draw_checkerboard(SkCanvas* canvas) {
sk_tool_utils::draw_checkerboard(canvas, 0xFF999999, 0xFF666666, 8);
}
SkBitmap create_string_bitmap(int w, int h, SkColor c, int x, int y,
int textSize, const char* str);
// A helper for inserting a drawtext call into a SkTextBlobBuilder
void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
SkScalar x, SkScalar y);
void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst);
void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst);
void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst);
void make_big_path(SkPath& path);
// Return a blurred version of 'src'. This doesn't use a separable filter
// so it is slow!
SkBitmap slow_blur(const SkBitmap& src, float sigma);
// A helper object to test the topological sorting code (TopoSortBench.cpp & TopoSortTest.cpp)
class TopoTestNode {
public:
TopoTestNode(int id) : fID(id), fOutputPos(-1), fTempMark(false) { }
void dependsOn(TopoTestNode* src) {
*fDependencies.append() = src;
}
int id() const { return fID; }
void reset() { fOutputPos = -1; }
int outputPos() const { return fOutputPos; }
// check that the topological sort is valid for this node
bool check() {
if (-1 == fOutputPos) {
return false;
}
for (int i = 0; i < fDependencies.count(); ++i) {
if (-1 == fDependencies[i]->outputPos()) {
return false;
}
// This node should've been output after all the nodes on which it depends
if (fOutputPos < fDependencies[i]->outputPos()) {
return false;
}
}
return true;
}
// The following 7 methods are needed by the topological sort
static void SetTempMark(TopoTestNode* node) { node->fTempMark = true; }
static void ResetTempMark(TopoTestNode* node) { node->fTempMark = false; }
static bool IsTempMarked(TopoTestNode* node) { return node->fTempMark; }
static void Output(TopoTestNode* node, int outputPos) {
SkASSERT(-1 != outputPos);
node->fOutputPos = outputPos;
}
static bool WasOutput(TopoTestNode* node) { return (-1 != node->fOutputPos); }
static int NumDependencies(TopoTestNode* node) { return node->fDependencies.count(); }
static TopoTestNode* Dependency(TopoTestNode* node, int index) {
return node->fDependencies[index];
}
// Helper functions for TopoSortBench & TopoSortTest
static void AllocNodes(SkTDArray<TopoTestNode*>* graph, int num) {
graph->setReserve(num);
for (int i = 0; i < num; ++i) {
*graph->append() = new TopoTestNode(i);
}
}
static void DeallocNodes(SkTDArray<TopoTestNode*>* graph) {
for (int i = 0; i < graph->count(); ++i) {
delete (*graph)[i];
}
}
#ifdef SK_DEBUG
static void Print(const SkTDArray<TopoTestNode*>& graph) {
for (int i = 0; i < graph.count(); ++i) {
SkDebugf("%d, ", graph[i]->id());
}
SkDebugf("\n");
}
#endif
// randomize the array
static void Shuffle(SkTDArray<TopoTestNode*>* graph, SkRandom* rand) {
for (int i = graph->count()-1; i > 0; --i) {
int swap = rand->nextU() % (i+1);
TopoTestNode* tmp = (*graph)[i];
(*graph)[i] = (*graph)[swap];
(*graph)[swap] = tmp;
}
}
private:
int fID;
int fOutputPos;
bool fTempMark;
SkTDArray<TopoTestNode*> fDependencies;
};
} // namespace sk_tool_utils
#endif // sk_tool_utils_DEFINED
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