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- /*
- * Copyright 2019 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "gm/gm.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFont.h"
- #include "include/core/SkFontStyle.h"
- #include "include/core/SkFontTypes.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkScalar.h"
- #include "include/core/SkTypeface.h"
- #include "include/core/SkTypes.h"
- #include <string.h>
- #include <initializer_list>
- #ifdef SK_BUILD_FOR_MAC
- #include "include/core/SkSurface.h"
- #import <ApplicationServices/ApplicationServices.h>
- static void std_cg_setup(CGContextRef ctx) {
- CGContextSetAllowsFontSubpixelQuantization(ctx, false);
- CGContextSetShouldSubpixelQuantizeFonts(ctx, false);
- // Because CG always draws from the horizontal baseline,
- // if there is a non-integral translation from the horizontal origin to the vertical origin,
- // then CG cannot draw the glyph in the correct location without subpixel positioning.
- CGContextSetAllowsFontSubpixelPositioning(ctx, true);
- CGContextSetShouldSubpixelPositionFonts(ctx, true);
- CGContextSetAllowsFontSmoothing(ctx, true);
- CGContextSetShouldAntialias(ctx, true);
- CGContextSetTextDrawingMode(ctx, kCGTextFill);
- // Draw black on white to create mask. (Special path exists to speed this up in CG.)
- CGContextSetGrayFillColor(ctx, 0.0f, 1.0f);
- }
- static CGContextRef make_cg_ctx(const SkPixmap& pm) {
- CGBitmapInfo info;
- CGColorSpaceRef cs;
- switch (pm.colorType()) {
- case kRGBA_8888_SkColorType:
- info = kCGBitmapByteOrder32Host | kCGImageAlphaNoneSkipFirst;
- cs = CGColorSpaceCreateDeviceRGB();
- break;
- case kGray_8_SkColorType:
- info = kCGImageAlphaNone;
- cs = CGColorSpaceCreateDeviceGray();
- break;
- case kAlpha_8_SkColorType:
- info = kCGImageAlphaOnly;
- cs = nullptr;
- break;
- default:
- return nullptr;
- }
- auto ctx = CGBitmapContextCreate(pm.writable_addr(), pm.width(), pm.height(), 8, pm.rowBytes(),
- cs, info);
- std_cg_setup(ctx);
- return ctx;
- }
- static void test_mac_fonts(SkCanvas* canvas, SkScalar size, SkScalar xpos) {
- int w = 32;
- int h = 32;
- canvas->scale(10, 10);
- SkScalar y = 1;
- for (SkColorType ct : {kRGBA_8888_SkColorType, kGray_8_SkColorType, kAlpha_8_SkColorType}) {
- SkImageInfo ii = SkImageInfo::Make(w, h, ct, kPremul_SkAlphaType);
- auto surf = SkSurface::MakeRaster(ii);
- SkPixmap pm;
- surf->peekPixels(&pm);
- CGContextRef ctx = make_cg_ctx(pm);
- CGContextSelectFont(ctx, "Times", size, kCGEncodingMacRoman);
- SkScalar x = 1;
- for (bool smooth : {false, true}) {
- surf->getCanvas()->clear(ct == kAlpha_8_SkColorType ? 0 : 0xFFFFFFFF);
- CGContextSetShouldSmoothFonts(ctx, smooth);
- CGContextShowTextAtPoint(ctx, 2 + xpos, 2, "A", 1);
- surf->draw(canvas, x, y, nullptr);
- x += pm.width();
- }
- y += pm.height();
- }
- }
- class MacAAFontsGM : public skiagm::GM {
- SkScalar fSize = 16;
- SkScalar fXPos = 0;
- public:
- MacAAFontsGM() {}
- ~MacAAFontsGM() override {}
- protected:
- DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
- test_mac_fonts(canvas, fSize, fXPos);
- return DrawResult::kOk;
- }
- SkISize onISize() override { return { 1024, 768 }; }
- SkString onShortName() override { return SkString("macaatest"); }
- bool onChar(SkUnichar uni) override {
- switch (uni) {
- case 'i': fSize += 1; return true;
- case 'k': fSize -= 1; return true;
- case 'j': fXPos -= 1.0f/16; return true;
- case 'l': fXPos += 1.0f/16; return true;
- default: break;
- }
- return false;
- }
- };
- DEF_GM(return new MacAAFontsGM;)
- #endif
- DEF_SIMPLE_GM(macaa_colors, canvas, 800, 500) {
- const SkColor GRAY = 0xFF808080;
- const SkColor colors[] = {
- SK_ColorBLACK, SK_ColorWHITE,
- SK_ColorBLACK, GRAY,
- SK_ColorWHITE, SK_ColorBLACK,
- SK_ColorWHITE, GRAY,
- };
- const SkScalar sizes[] = {10, 12, 15, 18, 24};
- const SkScalar width = 200;
- const SkScalar height = 500;
- const char str[] = "Hamburgefons";
- const size_t len = strlen(str);
- SkFont font;
- font.setTypeface(SkTypeface::MakeFromName("Times", SkFontStyle()));
- for (size_t i = 0; i < SK_ARRAY_COUNT(colors); i += 2) {
- canvas->save();
- SkPaint paint;
- paint.setColor(colors[i+1]);
- canvas->drawRect({0, 0, width, height}, paint);
- paint.setColor(colors[i]);
- SkScalar y = 10;
- SkScalar x = 10;
- for (SkScalar ps : sizes) {
- font.setSize(ps);
- for (bool lcd : {false, true}) {
- font.setEdging(lcd ? SkFont::Edging::kSubpixelAntiAlias
- : SkFont::Edging::kAntiAlias);
- for (auto h : {SkFontHinting::kNone, SkFontHinting::kNormal}) {
- font.setHinting(h);
- y += font.getSpacing() + 2;
- canvas->drawSimpleText(str, len, SkTextEncoding::kUTF8, x, y, font, paint);
- }
- }
- y += 8;
- }
- canvas->restore();
- canvas->translate(width, 0);
- }
- }
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