81 lines
2.6 KiB
C++
81 lines
2.6 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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#include "sk_tool_utils.h"
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#include "sk_tool_utils_flags.h"
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#include "SkBitmap.h"
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#include "SkCanvas.h"
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#include "SkShader.h"
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#include "SkTestScalerContext.h"
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DEFINE_bool(portableFonts, false, "Use portable fonts");
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DEFINE_bool(resourceFonts, false, "Use resource fonts");
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namespace sk_tool_utils {
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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 kIndex_8_SkColorType: return "Index_8";
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case kARGB_4444_SkColorType: return "ARGB_4444";
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case kRGB_565_SkColorType: return "RGB_565";
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case kRGBA_8888_SkColorType: return "RGBA_8888";
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case kBGRA_8888_SkColorType: return "BGRA_8888";
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default:
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SkASSERT(false);
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return "unexpected colortype";
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}
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}
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SkTypeface* create_portable_typeface(const char* name, SkTypeface::Style style) {
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SkTypeface* face;
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if (FLAGS_portableFonts) {
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face = create_font(name, style);
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} else if (FLAGS_resourceFonts) {
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face = resource_font(name, style);
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} else {
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face = SkTypeface::CreateFromName(name, style);
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}
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return face;
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}
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void set_portable_typeface(SkPaint* paint, const char* name, SkTypeface::Style style) {
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SkTypeface* face = create_portable_typeface(name, style);
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SkSafeUnref(paint->setTypeface(face));
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}
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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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tmp.lockPixels();
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const SkImageInfo info = SkImageInfo::Make(tmp.width(), tmp.height(), colorType, alphaType);
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canvas->writePixels(info, tmp.getPixels(), tmp.rowBytes(), x, y);
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}
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SkShader* create_checkerboard_shader(SkColor c1, SkColor c2, int size) {
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SkBitmap bm;
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bm.allocN32Pixels(2 * size, 2 * size);
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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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return SkShader::CreateBitmapShader(
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bm, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode);
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}
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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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paint.setShader(create_checkerboard_shader(c1, c2, size))->unref();
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paint.setXfermodeMode(SkXfermode::kSrc_Mode);
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canvas->drawPaint(paint);
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}
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} // namespace sk_tool_utils
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