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 "gm/gm.h"
9 #include "gm/verifiers/gmverifier.h"
10 #include "include/core/SkBitmap.h"
11 #include "include/core/SkBlendMode.h"
12 #include "include/core/SkCanvas.h"
13 #include "include/core/SkFilterQuality.h"
14 #include "include/core/SkFont.h"
15 #include "include/core/SkFontTypes.h"
16 #include "include/core/SkMatrix.h"
17 #include "include/core/SkPaint.h"
18 #include "include/core/SkRect.h"
19 #include "include/core/SkShader.h"
20 #include "include/core/SkTileMode.h"
21 #include "include/core/SkTypeface.h"
22 #include "include/gpu/GrContext.h"
23 #include "src/core/SkTraceEvent.h"
24 #include "tools/ToolUtils.h"
25
26 #include <stdarg.h>
27
28 class GrRenderTargetContext;
29
30 using namespace skiagm;
31
32 constexpr char GM::kErrorMsg_DrawSkippedGpuOnly[];
33
draw_failure_message(SkCanvas * canvas,const char format[],...)34 static void draw_failure_message(SkCanvas* canvas, const char format[], ...) {
35 SkString failureMsg;
36
37 va_list argp;
38 va_start(argp, format);
39 failureMsg.appendVAList(format, argp);
40 va_end(argp);
41
42 constexpr SkScalar kOffset = 5.0f;
43 canvas->drawColor(SkColorSetRGB(200,0,0));
44 SkFont font;
45 SkRect bounds;
46 font.measureText(failureMsg.c_str(), failureMsg.size(), SkTextEncoding::kUTF8, &bounds);
47 SkPaint textPaint(SkColors::kWhite);
48 canvas->drawString(failureMsg, kOffset, bounds.height() + kOffset, font, textPaint);
49 }
50
draw_gpu_only_message(SkCanvas * canvas)51 static void draw_gpu_only_message(SkCanvas* canvas) {
52 SkBitmap bmp;
53 bmp.allocN32Pixels(128, 64);
54 SkCanvas bmpCanvas(bmp);
55 bmpCanvas.drawColor(SK_ColorWHITE);
56 SkFont font(ToolUtils::create_portable_typeface(), 20);
57 SkPaint paint(SkColors::kRed);
58 bmpCanvas.drawString("GPU Only", 20, 40, font, paint);
59 SkMatrix localM;
60 localM.setRotate(35.f);
61 localM.postTranslate(10.f, 0.f);
62 paint.setShader(bmp.makeShader(SkTileMode::kMirror, SkTileMode::kMirror, &localM));
63 paint.setFilterQuality(kMedium_SkFilterQuality);
64 canvas->drawPaint(paint);
65 }
66
GM(SkColor bgColor)67 GM::GM(SkColor bgColor) {
68 fMode = kGM_Mode;
69 fBGColor = bgColor;
70 fHaveCalledOnceBeforeDraw = false;
71 }
72
~GM()73 GM::~GM() {}
74
draw(SkCanvas * canvas,SkString * errorMsg)75 DrawResult GM::draw(SkCanvas* canvas, SkString* errorMsg) {
76 TRACE_EVENT1("GM", TRACE_FUNC, "name", TRACE_STR_COPY(this->getName()));
77 this->drawBackground(canvas);
78 return this->drawContent(canvas, errorMsg);
79 }
80
drawContent(SkCanvas * canvas,SkString * errorMsg)81 DrawResult GM::drawContent(SkCanvas* canvas, SkString* errorMsg) {
82 TRACE_EVENT0("GM", TRACE_FUNC);
83 if (!fHaveCalledOnceBeforeDraw) {
84 fHaveCalledOnceBeforeDraw = true;
85 this->onOnceBeforeDraw();
86 }
87 SkAutoCanvasRestore acr(canvas, true);
88 DrawResult drawResult = this->onDraw(canvas, errorMsg);
89 if (DrawResult::kOk != drawResult) {
90 if (DrawResult::kFail == drawResult) {
91 draw_failure_message(canvas, "DRAW FAILED: %s", errorMsg->c_str());
92 } else if (SkString(kErrorMsg_DrawSkippedGpuOnly) == *errorMsg) {
93 draw_gpu_only_message(canvas);
94 } else {
95 draw_failure_message(canvas, "DRAW SKIPPED: %s", errorMsg->c_str());
96 }
97 }
98 return drawResult;
99 }
100
drawBackground(SkCanvas * canvas)101 void GM::drawBackground(SkCanvas* canvas) {
102 TRACE_EVENT0("GM", TRACE_FUNC);
103 if (!fHaveCalledOnceBeforeDraw) {
104 fHaveCalledOnceBeforeDraw = true;
105 this->onOnceBeforeDraw();
106 }
107 SkAutoCanvasRestore acr(canvas, true);
108 canvas->drawColor(fBGColor, SkBlendMode::kSrc);
109 }
110
onDraw(SkCanvas * canvas,SkString * errorMsg)111 DrawResult GM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
112 this->onDraw(canvas);
113 return DrawResult::kOk;
114 }
onDraw(SkCanvas *)115 void GM::onDraw(SkCanvas*) { SK_ABORT("Not implemented."); }
116
117
onISize()118 SkISize SimpleGM::onISize() { return fSize; }
onShortName()119 SkString SimpleGM::onShortName() { return fName; }
onDraw(SkCanvas * canvas,SkString * errorMsg)120 DrawResult SimpleGM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
121 return fDrawProc(canvas, errorMsg);
122 }
123
onISize()124 SkISize SimpleGpuGM::onISize() { return fSize; }
onShortName()125 SkString SimpleGpuGM::onShortName() { return fName; }
onDraw(GrContext * ctx,GrRenderTargetContext * rtc,SkCanvas * canvas,SkString * errorMsg)126 DrawResult SimpleGpuGM::onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
127 SkString* errorMsg) {
128 return fDrawProc(ctx, rtc, canvas, errorMsg);
129 }
130
getName()131 const char* GM::getName() {
132 if (fShortName.size() == 0) {
133 fShortName = this->onShortName();
134 }
135 return fShortName.c_str();
136 }
137
setBGColor(SkColor color)138 void GM::setBGColor(SkColor color) {
139 fBGColor = color;
140 }
141
animate(double nanos)142 bool GM::animate(double nanos) { return this->onAnimate(nanos); }
143
runAsBench() const144 bool GM::runAsBench() const { return false; }
modifyGrContextOptions(GrContextOptions * options)145 void GM::modifyGrContextOptions(GrContextOptions* options) {}
146
getVerifiers() const147 std::unique_ptr<verifiers::VerifierList> GM::getVerifiers() const {
148 // No verifiers by default.
149 return nullptr;
150 }
151
onOnceBeforeDraw()152 void GM::onOnceBeforeDraw() {}
153
onAnimate(double)154 bool GM::onAnimate(double /*nanos*/) { return false; }
155
onChar(SkUnichar uni)156 bool GM::onChar(SkUnichar uni) { return false; }
157
onGetControls(SkMetaData *)158 bool GM::onGetControls(SkMetaData*) { return false; }
159
onSetControls(const SkMetaData &)160 void GM::onSetControls(const SkMetaData&) {}
161
162 /////////////////////////////////////////////////////////////////////////////////////////////
163
drawSizeBounds(SkCanvas * canvas,SkColor color)164 void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
165 canvas->drawRect(SkRect::Make(this->getISize()), SkPaint(SkColor4f::FromColor(color)));
166 }
167
168 // need to explicitly declare this, or we get some weird infinite loop llist
169 template GMRegistry* GMRegistry::gHead;
170
onDraw(GrContext * ctx,GrRenderTargetContext * rtc,SkCanvas * canvas,SkString * errorMsg)171 DrawResult GpuGM::onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
172 SkString* errorMsg) {
173 this->onDraw(ctx, rtc, canvas);
174 return DrawResult::kOk;
175 }
onDraw(GrContext *,GrRenderTargetContext *,SkCanvas *)176 void GpuGM::onDraw(GrContext*, GrRenderTargetContext*, SkCanvas*) {
177 SK_ABORT("Not implemented.");
178 }
179
onDraw(SkCanvas * canvas,SkString * errorMsg)180 DrawResult GpuGM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
181 GrContext* ctx = canvas->getGrContext();
182 GrRenderTargetContext* rtc = canvas->internal_private_accessTopLayerRenderTargetContext();
183 if (!ctx || !rtc) {
184 *errorMsg = kErrorMsg_DrawSkippedGpuOnly;
185 return DrawResult::kSkip;
186 }
187 if (ctx->abandoned()) {
188 *errorMsg = "GrContext abandoned.";
189 return DrawResult::kSkip;
190 }
191 return this->onDraw(ctx, rtc, canvas, errorMsg);
192 }
193
194 template <typename Fn>
mark(SkCanvas * canvas,SkScalar x,SkScalar y,Fn && fn)195 static void mark(SkCanvas* canvas, SkScalar x, SkScalar y, Fn&& fn) {
196 SkPaint alpha;
197 alpha.setAlpha(0x50);
198 canvas->saveLayer(nullptr, &alpha);
199 canvas->translate(x,y);
200 canvas->scale(2,2);
201 fn();
202 canvas->restore();
203 }
204
MarkGMGood(SkCanvas * canvas,SkScalar x,SkScalar y)205 void MarkGMGood(SkCanvas* canvas, SkScalar x, SkScalar y) {
206 mark(canvas, x,y, [&]{
207 // A green circle.
208 canvas->drawCircle(0, 0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(27, 158, 119))));
209
210 // Cut out a check mark.
211 SkPaint paint(SkColors::kTransparent);
212 paint.setBlendMode(SkBlendMode::kSrc);
213 paint.setStrokeWidth(2);
214 paint.setStyle(SkPaint::kStroke_Style);
215 canvas->drawLine(-6, 0,
216 -1, 5, paint);
217 canvas->drawLine(-1, +5,
218 +7, -5, paint);
219 });
220 }
221
MarkGMBad(SkCanvas * canvas,SkScalar x,SkScalar y)222 void MarkGMBad(SkCanvas* canvas, SkScalar x, SkScalar y) {
223 mark(canvas, x,y, [&] {
224 // A red circle.
225 canvas->drawCircle(0,0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(231, 41, 138))));
226
227 // Cut out an 'X'.
228 SkPaint paint(SkColors::kTransparent);
229 paint.setBlendMode(SkBlendMode::kSrc);
230 paint.setStrokeWidth(2);
231 paint.setStyle(SkPaint::kStroke_Style);
232 canvas->drawLine(-5,-5,
233 +5,+5, paint);
234 canvas->drawLine(+5,-5,
235 -5,+5, paint);
236 });
237 }
238