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 "include/core/SkCanvas.h"
9 #include "include/core/SkData.h"
10 #include "include/core/SkDocument.h"
11 #include "include/core/SkGraphics.h"
12 #include "include/core/SkImage.h"
13 #include "include/core/SkStream.h"
14 #include "include/core/SkString.h"
15 #include "include/core/SkSurface.h"
16 #include "tools/flags/CommandLineFlags.h"
17
18 static DEFINE_string2(outFile, o, "skhello", "The filename to write the image.");
19 static DEFINE_string2(text, t, "Hello", "The string to write.");
20
doDraw(SkCanvas * canvas,const SkPaint & paint,const char text[])21 static void doDraw(SkCanvas* canvas, const SkPaint& paint, const char text[]) {
22 SkRect bounds = canvas->getLocalClipBounds();
23
24 canvas->drawColor(SK_ColorWHITE);
25 canvas->drawText(text, strlen(text),
26 bounds.centerX(), bounds.centerY(),
27 paint);
28 }
29
do_surface(int w,int h,const char path[],const char text[],const SkPaint & paint)30 static bool do_surface(int w, int h, const char path[], const char text[],
31 const SkPaint& paint) {
32 SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
33 sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(w, h, &props));
34 doDraw(surface->getCanvas(), paint, text);
35
36 sk_sp<SkImage> image(surface->makeImageSnapshot());
37 sk_sp<SkData> data(image->encode());
38 if (!data) {
39 return false;
40 }
41 SkFILEWStream stream(path);
42 return stream.write(data->data(), data->size());
43 }
44
do_document(int w,int h,const char path[],const char text[],const SkPaint & paint)45 static bool do_document(int w, int h, const char path[], const char text[],
46 const SkPaint& paint) {
47 auto doc = SkPDF::MakeDocument(path);
48 if (doc.get()) {
49 SkScalar width = SkIntToScalar(w);
50 SkScalar height = SkIntToScalar(h);
51 doDraw(doc->beginPage(width, height, nullptr), paint, text);
52 return true;
53 }
54 return false;
55 }
56
main(int argc,char ** argv)57 int main(int argc, char** argv) {
58 CommandLineFlags::SetUsage("");
59 CommandLineFlags::Parse(argc, argv);
60
61 SkAutoGraphics ag;
62 SkString path("skhello");
63 SkString text("Hello");
64
65 if (!FLAGS_outFile.isEmpty()) {
66 path.set(FLAGS_outFile[0]);
67 }
68 if (!FLAGS_text.isEmpty()) {
69 text.set(FLAGS_text[0]);
70 }
71
72 SkPaint paint;
73 paint.setAntiAlias(true);
74 paint.setTextSize(SkIntToScalar(30));
75 paint.setTextAlign(SkPaint::kCenter_Align);
76
77 SkScalar width = paint.measureText(text.c_str(), text.size());
78 SkScalar spacing = paint.getFontSpacing();
79
80 int w = SkScalarRoundToInt(width) + 30;
81 int h = SkScalarRoundToInt(spacing) + 30;
82
83 static const struct {
84 bool (*fProc)(int w, int h, const char path[], const char text[],
85 const SkPaint&);
86 const char* fSuffix;
87 } gRec[] = {
88 { do_surface, ".png" },
89 { do_document, ".pdf" },
90 };
91
92 for (size_t i = 0; i < SK_ARRAY_COUNT(gRec); ++i) {
93 SkString file;
94 file.printf("%s%s", path.c_str(), gRec[i].fSuffix);
95 if (!gRec[i].fProc(w, h, file.c_str(), text.c_str(), paint)) {
96 return -1;
97 }
98 }
99 return 0;
100 }
101