943a462fef
This was requested in https://codereview.chromium.org/1309543012/ (Add new GM to directly exercise perspective bitmap drawing) Review URL: https://codereview.chromium.org/1320673011
139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
/*
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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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#include "SkColor.h"
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#include "SkImageEncoder.h"
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#include "SkImageInfo.h"
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#include "SkPixelSerializer.h"
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#include "SkTypeface.h"
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class SkBitmap;
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class SkCanvas;
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class SkPaint;
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class SkShader;
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class SkTestFont;
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class SkTextBlobBuilder;
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namespace sk_tool_utils {
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const char* colortype_name(SkColorType);
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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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void emoji_typeface(SkAutoTUnref<SkTypeface>* );
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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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const char* emoji_sample_text();
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/**
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* If the platform supports color emoji, return the type (i.e. "CBDT", "SBIX", "").
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*/
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const char* platform_os_emoji();
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/**
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* Return the platform name with the version number ("Mac10.9", "Win8", etc.) if available.
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*/
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const char* platform_os_name();
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/**
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* Return the platform name without the version number ("Mac", "Win", etc.) if available.
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*/
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SkString major_platform_os_name();
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/**
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* Return the platform extra config (e.g. "GDI") if available.
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*/
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const char* platform_extra_config(const char* config);
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/**
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* Map serif, san-serif, and monospace to the platform-specific font name.
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*/
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const char* platform_font_name(const char* name);
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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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void set_portable_typeface(SkPaint* paint, const char* name = nullptr,
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SkTypeface::Style style = SkTypeface::kNormal);
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/**
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* Returns a platform-independent text renderer.
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*/
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SkTypeface* create_portable_typeface(const char* name, SkTypeface::Style style);
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/** Call to clean up portable font references. */
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void release_portable_typefaces();
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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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// private to sk_tool_utils
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SkTypeface* create_font(const char* name, SkTypeface::Style);
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/** Returns a newly created CheckerboardShader. */
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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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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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// Encodes to PNG, unless there is already encoded data, in which case that gets
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// used.
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class PngPixelSerializer : public SkPixelSerializer {
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public:
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bool onUseEncodedData(const void*, size_t) override { return true; }
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SkData* onEncodePixels(const SkImageInfo& info, const void* pixels,
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size_t rowBytes) override {
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return SkImageEncoder::EncodeData(info, pixels, rowBytes,
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SkImageEncoder::kPNG_Type, 100);
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}
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};
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// A helper for inserting a drawtext call into a SkTextBlobBuilder
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void add_to_text_blob(SkTextBlobBuilder* builder, const char* text, const SkPaint& origPaint,
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SkScalar x, SkScalar y);
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void create_hemi_normal_map(SkBitmap* bm, const SkIRect& dst);
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void create_frustum_normal_map(SkBitmap* bm, const SkIRect& dst);
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void create_tetra_normal_map(SkBitmap* bm, const SkIRect& dst);
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} // namespace sk_tool_utils
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#endif // sk_tool_utils_DEFINED
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