1b2808cd0411b5860f04f1364138674463768e414cdalton/* 2b2808cd0411b5860f04f1364138674463768e414cdalton * Copyright 2014 Google Inc. 3b2808cd0411b5860f04f1364138674463768e414cdalton * 4b2808cd0411b5860f04f1364138674463768e414cdalton * Use of this source code is governed by a BSD-style license that can be 5b2808cd0411b5860f04f1364138674463768e414cdalton * found in the LICENSE file. 6b2808cd0411b5860f04f1364138674463768e414cdalton */ 7b2808cd0411b5860f04f1364138674463768e414cdalton 8b2808cd0411b5860f04f1364138674463768e414cdalton#include "gm.h" 9b2808cd0411b5860f04f1364138674463768e414cdalton#include "SkCanvas.h" 10b2808cd0411b5860f04f1364138674463768e414cdalton#include "SkGradientShader.h" 11b2808cd0411b5860f04f1364138674463768e414cdalton 12b2808cd0411b5860f04f1364138674463768e414cdalton/** 13b2808cd0411b5860f04f1364138674463768e414cdalton * This test exercises drawPosTextH and drawPosText with every text align. 14b2808cd0411b5860f04f1364138674463768e414cdalton */ 15dbfd7ab10883f173f5c1b653a233e18dc6142002mtkleinconstexpr int kWidth = 480; 16dbfd7ab10883f173f5c1b653a233e18dc6142002mtkleinconstexpr int kHeight = 600; 17dbfd7ab10883f173f5c1b653a233e18dc6142002mtkleinconstexpr SkScalar kTextHeight = 64.0f; 18dbfd7ab10883f173f5c1b653a233e18dc6142002mtkleinconstexpr int kMaxStringLength = 12; 19b2808cd0411b5860f04f1364138674463768e414cdalton 202a24338c777462e04a2b26295f9c034155ee8f3ehalcanarystatic void drawTestCase(SkCanvas*, const char*, SkScalar, const SkPaint&); 21b2808cd0411b5860f04f1364138674463768e414cdalton 222a24338c777462e04a2b26295f9c034155ee8f3ehalcanaryDEF_SIMPLE_GM_BG(glyph_pos_align, canvas, kWidth, kHeight, SK_ColorBLACK) { 23b2808cd0411b5860f04f1364138674463768e414cdalton SkPaint paint; 24b2808cd0411b5860f04f1364138674463768e414cdalton paint.setTextSize(kTextHeight); 25b2808cd0411b5860f04f1364138674463768e414cdalton paint.setFakeBoldText(true); 26b2808cd0411b5860f04f1364138674463768e414cdalton const SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE }; 27b2808cd0411b5860f04f1364138674463768e414cdalton const SkPoint pts[] = {{0, 0}, {kWidth, kHeight}}; 282ad1aa67c6894696cdd65ec56057f81031d1c24areed paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, SK_ARRAY_COUNT(colors), 292ad1aa67c6894696cdd65ec56057f81031d1c24areed SkShader::kMirror_TileMode)); 30b2808cd0411b5860f04f1364138674463768e414cdalton paint.setTextAlign(SkPaint::kRight_Align); 31b2808cd0411b5860f04f1364138674463768e414cdalton drawTestCase(canvas, "Right Align", kTextHeight, paint); 32b2808cd0411b5860f04f1364138674463768e414cdalton 33b2808cd0411b5860f04f1364138674463768e414cdalton paint.setTextAlign(SkPaint::kCenter_Align); 34b2808cd0411b5860f04f1364138674463768e414cdalton drawTestCase(canvas, "Center Align", 4 * kTextHeight, paint); 35b2808cd0411b5860f04f1364138674463768e414cdalton 36b2808cd0411b5860f04f1364138674463768e414cdalton paint.setTextAlign(SkPaint::kLeft_Align); 37b2808cd0411b5860f04f1364138674463768e414cdalton drawTestCase(canvas, "Left Align", 7 * kTextHeight, paint); 382a24338c777462e04a2b26295f9c034155ee8f3ehalcanary} 39b2808cd0411b5860f04f1364138674463768e414cdalton 402a24338c777462e04a2b26295f9c034155ee8f3ehalcanaryvoid drawTestCase(SkCanvas* canvas, const char* text, SkScalar y, const SkPaint& paint) { 41b2808cd0411b5860f04f1364138674463768e414cdalton SkScalar widths[kMaxStringLength]; 42b2808cd0411b5860f04f1364138674463768e414cdalton SkScalar posX[kMaxStringLength]; 43b2808cd0411b5860f04f1364138674463768e414cdalton SkPoint pos[kMaxStringLength]; 44fbaace082745a0e301186b2d3b84af62e2fb87ecbsalomon int length = SkToInt(strlen(text)); 45b2808cd0411b5860f04f1364138674463768e414cdalton SkASSERT(length <= kMaxStringLength); 46b2808cd0411b5860f04f1364138674463768e414cdalton 47b2808cd0411b5860f04f1364138674463768e414cdalton paint.getTextWidths(text, length, widths); 48b2808cd0411b5860f04f1364138674463768e414cdalton 49b2808cd0411b5860f04f1364138674463768e414cdalton float originX; 50b2808cd0411b5860f04f1364138674463768e414cdalton switch (paint.getTextAlign()) { 51b2808cd0411b5860f04f1364138674463768e414cdalton case SkPaint::kRight_Align: originX = 1; break; 52b2808cd0411b5860f04f1364138674463768e414cdalton case SkPaint::kCenter_Align: originX = 0.5f; break; 53b2808cd0411b5860f04f1364138674463768e414cdalton case SkPaint::kLeft_Align: originX = 0; break; 54b4aab9ae6d27c446af8302b79d15b832c816c633Ben Wagner default: SK_ABORT("Invalid paint origin"); return; 55b2808cd0411b5860f04f1364138674463768e414cdalton } 56b2808cd0411b5860f04f1364138674463768e414cdalton 57b2808cd0411b5860f04f1364138674463768e414cdalton float x = kTextHeight; 58b2808cd0411b5860f04f1364138674463768e414cdalton for (int i = 0; i < length; ++i) { 59b2808cd0411b5860f04f1364138674463768e414cdalton posX[i] = x + originX * widths[i]; 60b2808cd0411b5860f04f1364138674463768e414cdalton pos[i].set(posX[i], i ? pos[i - 1].y() + 3 : y + kTextHeight); 61b2808cd0411b5860f04f1364138674463768e414cdalton x += widths[i]; 62b2808cd0411b5860f04f1364138674463768e414cdalton } 63b2808cd0411b5860f04f1364138674463768e414cdalton 64b2808cd0411b5860f04f1364138674463768e414cdalton canvas->drawPosTextH(text, length, posX, y, paint); 65b2808cd0411b5860f04f1364138674463768e414cdalton canvas->drawPosText(text, length, pos, paint); 66b2808cd0411b5860f04f1364138674463768e414cdalton} 67