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
21 DEFINE_string2(outFile, o, "skhello", "The filename to write the image.");
22 DEFINE_string2(text, t, "Hello", "The string to write.");
23
doDraw(SkCanvas * canvas,const SkPaint & paint,const char text[])24 static 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
do_surface(int w,int h,const char path[],const char text[],const SkPaint & paint)34 static 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
do_document(int w,int h,const char path[],const char text[],const SkPaint & paint)49 static 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
61 int tool_main(int argc, char** argv);
tool_main(int argc,char ** argv)62 int 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
main(int argc,char * const argv[])108 int main(int argc, char * const argv[]) {
109 return tool_main(argc, (char**) argv);
110 }
111 #endif
112