| /* |
| * 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 | (CGBitmapInfo)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); |
| 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 < std::size(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); |
| } |
| } |