1/* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8#include "SkCanvas.h" 9#include "SkCommandLineFlags.h" 10#include "SkData.h" 11#include "SkDocument.h" 12#include "SkForceLinking.h" 13#include "SkGraphics.h" 14#include "SkSurface.h" 15#include "SkImage.h" 16#include "SkStream.h" 17#include "SkString.h" 18 19__SK_FORCE_IMAGE_DECODER_LINKING; 20 21DEFINE_string2(outFile, o, "skhello", "The filename to write the image."); 22DEFINE_string2(text, t, "Hello", "The string to write."); 23 24static void doDraw(SkCanvas* canvas, const SkPaint& paint, const char text[]) { 25 SkRect bounds; 26 canvas->getClipBounds(&bounds); 27 28 canvas->drawColor(SK_ColorWHITE); 29 canvas->drawText(text, strlen(text), 30 bounds.centerX(), bounds.centerY(), 31 paint); 32} 33 34static bool do_surface(int w, int h, const char path[], const char text[], 35 const SkPaint& paint) { 36 SkSurfaceProps props(0, kUnknown_SkPixelGeometry); 37 SkAutoTUnref<SkSurface> surface(SkSurface::NewRasterN32Premul(w, h, &props)); 38 doDraw(surface->getCanvas(), paint, text); 39 40 SkAutoTUnref<SkImage> image(surface->newImageSnapshot()); 41 SkAutoDataUnref data(image->encode()); 42 if (nullptr == data.get()) { 43 return false; 44 } 45 SkFILEWStream stream(path); 46 return stream.write(data->data(), data->size()); 47} 48 49static bool do_document(int w, int h, const char path[], const char text[], 50 const SkPaint& paint) { 51 SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(path)); 52 if (doc.get()) { 53 SkScalar width = SkIntToScalar(w); 54 SkScalar height = SkIntToScalar(h); 55 doDraw(doc->beginPage(width, height, nullptr), paint, text); 56 return true; 57 } 58 return false; 59} 60 61int tool_main(int argc, char** argv); 62int tool_main(int argc, char** argv) { 63 SkCommandLineFlags::SetUsage(""); 64 SkCommandLineFlags::Parse(argc, argv); 65 66 SkAutoGraphics ag; 67 SkString path("skhello"); 68 SkString text("Hello"); 69 70 if (!FLAGS_outFile.isEmpty()) { 71 path.set(FLAGS_outFile[0]); 72 } 73 if (!FLAGS_text.isEmpty()) { 74 text.set(FLAGS_text[0]); 75 } 76 77 SkPaint paint; 78 paint.setAntiAlias(true); 79 paint.setTextSize(SkIntToScalar(30)); 80 paint.setTextAlign(SkPaint::kCenter_Align); 81 82 SkScalar width = paint.measureText(text.c_str(), text.size()); 83 SkScalar spacing = paint.getFontSpacing(); 84 85 int w = SkScalarRoundToInt(width) + 30; 86 int h = SkScalarRoundToInt(spacing) + 30; 87 88 static const struct { 89 bool (*fProc)(int w, int h, const char path[], const char text[], 90 const SkPaint&); 91 const char* fSuffix; 92 } gRec[] = { 93 { do_surface, ".png" }, 94 { do_document, ".pdf" }, 95 }; 96 97 for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) { 98 SkString file; 99 file.printf("%s%s", path.c_str(), gRec[i].fSuffix); 100 if (!gRec[i].fProc(w, h, file.c_str(), text.c_str(), paint)) { 101 return -1; 102 } 103 } 104 return 0; 105} 106 107#if !defined SK_BUILD_FOR_IOS 108int main(int argc, char * const argv[]) { 109 return tool_main(argc, (char**) argv); 110} 111#endif 112