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 "include/core/SkBitmap.h"
10 #include "include/core/SkBlendMode.h"
11 #include "include/core/SkCanvas.h"
12 #include "include/core/SkFilterQuality.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkFontTypes.h"
15 #include "include/core/SkMatrix.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkRect.h"
18 #include "include/core/SkShader.h"
19 #include "include/core/SkTileMode.h"
20 #include "include/core/SkTypeface.h"
21 #include "include/gpu/GrContext.h"
22 #include "src/core/SkTraceEvent.h"
23 #include "tools/ToolUtils.h"
24
25 #include <stdarg.h>
26
27 class GrRenderTargetContext;
28
29 using namespace skiagm;
30
31 constexpr char GM::kErrorMsg_DrawSkippedGpuOnly[];
32
draw_failure_message(SkCanvas * canvas,const char format[],...)33 static void draw_failure_message(SkCanvas* canvas, const char format[], ...) {
34 SkString failureMsg;
35
36 va_list argp;
37 va_start(argp, format);
38 failureMsg.appendVAList(format, argp);
39 va_end(argp);
40
41 constexpr SkScalar kOffset = 5.0f;
42 canvas->drawColor(SkColorSetRGB(200,0,0));
43 SkFont font;
44 SkRect bounds;
45 font.measureText(failureMsg.c_str(), failureMsg.size(), SkTextEncoding::kUTF8, &bounds);
46 SkPaint textPaint(SkColors::kWhite);
47 canvas->drawString(failureMsg, kOffset, bounds.height() + kOffset, font, textPaint);
48 }
49
draw_gpu_only_message(SkCanvas * canvas)50 static void draw_gpu_only_message(SkCanvas* canvas) {
51 SkBitmap bmp;
52 bmp.allocN32Pixels(128, 64);
53 SkCanvas bmpCanvas(bmp);
54 bmpCanvas.drawColor(SK_ColorWHITE);
55 SkFont font(ToolUtils::create_portable_typeface(), 20);
56 SkPaint paint(SkColors::kRed);
57 bmpCanvas.drawString("GPU Only", 20, 40, font, paint);
58 SkMatrix localM;
59 localM.setRotate(35.f);
60 localM.postTranslate(10.f, 0.f);
61 paint.setShader(bmp.makeShader(SkTileMode::kMirror, SkTileMode::kMirror, &localM));
62 paint.setFilterQuality(kMedium_SkFilterQuality);
63 canvas->drawPaint(paint);
64 }
65
GM(SkColor bgColor)66 GM::GM(SkColor bgColor) {
67 fMode = kGM_Mode;
68 fBGColor = bgColor;
69 fCanvasIsDeferred = false;
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
onOnceBeforeDraw()147 void GM::onOnceBeforeDraw() {}
148
onAnimate(double)149 bool GM::onAnimate(double /*nanos*/) { return false; }
150
onChar(SkUnichar uni)151 bool GM::onChar(SkUnichar uni) { return false; }
152
onGetControls(SkMetaData *)153 bool GM::onGetControls(SkMetaData*) { return false; }
154
onSetControls(const SkMetaData &)155 void GM::onSetControls(const SkMetaData&) {}
156
157 /////////////////////////////////////////////////////////////////////////////////////////////
158
drawSizeBounds(SkCanvas * canvas,SkColor color)159 void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
160 canvas->drawRect(SkRect::Make(this->getISize()), SkPaint(SkColor4f::FromColor(color)));
161 }
162
163 // need to explicitly declare this, or we get some weird infinite loop llist
164 template GMRegistry* GMRegistry::gHead;
165
onDraw(GrContext * ctx,GrRenderTargetContext * rtc,SkCanvas * canvas,SkString * errorMsg)166 DrawResult GpuGM::onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
167 SkString* errorMsg) {
168 this->onDraw(ctx, rtc, canvas);
169 return DrawResult::kOk;
170 }
onDraw(GrContext *,GrRenderTargetContext *,SkCanvas *)171 void GpuGM::onDraw(GrContext*, GrRenderTargetContext*, SkCanvas*) {
172 SK_ABORT("Not implemented.");
173 }
174
onDraw(SkCanvas * canvas,SkString * errorMsg)175 DrawResult GpuGM::onDraw(SkCanvas* canvas, SkString* errorMsg) {
176 GrContext* ctx = canvas->getGrContext();
177 GrRenderTargetContext* rtc = canvas->internal_private_accessTopLayerRenderTargetContext();
178 if (!ctx || !rtc) {
179 *errorMsg = kErrorMsg_DrawSkippedGpuOnly;
180 return DrawResult::kSkip;
181 }
182 if (ctx->abandoned()) {
183 *errorMsg = "GrContext abandoned.";
184 return DrawResult::kSkip;
185 }
186 return this->onDraw(ctx, rtc, canvas, errorMsg);
187 }
188
189 template <typename Fn>
mark(SkCanvas * canvas,SkScalar x,SkScalar y,Fn && fn)190 static void mark(SkCanvas* canvas, SkScalar x, SkScalar y, Fn&& fn) {
191 SkPaint alpha;
192 alpha.setAlpha(0x50);
193 canvas->saveLayer(nullptr, &alpha);
194 canvas->translate(x,y);
195 canvas->scale(2,2);
196 fn();
197 canvas->restore();
198 }
199
MarkGMGood(SkCanvas * canvas,SkScalar x,SkScalar y)200 void MarkGMGood(SkCanvas* canvas, SkScalar x, SkScalar y) {
201 mark(canvas, x,y, [&]{
202 // A green circle.
203 canvas->drawCircle(0, 0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(27, 158, 119))));
204
205 // Cut out a check mark.
206 SkPaint paint(SkColors::kTransparent);
207 paint.setBlendMode(SkBlendMode::kSrc);
208 paint.setStrokeWidth(2);
209 paint.setStyle(SkPaint::kStroke_Style);
210 canvas->drawLine(-6, 0,
211 -1, 5, paint);
212 canvas->drawLine(-1, +5,
213 +7, -5, paint);
214 });
215 }
216
MarkGMBad(SkCanvas * canvas,SkScalar x,SkScalar y)217 void MarkGMBad(SkCanvas* canvas, SkScalar x, SkScalar y) {
218 mark(canvas, x,y, [&] {
219 // A red circle.
220 canvas->drawCircle(0,0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(231, 41, 138))));
221
222 // Cut out an 'X'.
223 SkPaint paint(SkColors::kTransparent);
224 paint.setBlendMode(SkBlendMode::kSrc);
225 paint.setStrokeWidth(2);
226 paint.setStyle(SkPaint::kStroke_Style);
227 canvas->drawLine(-5,-5,
228 +5,+5, paint);
229 canvas->drawLine(+5,-5,
230 -5,+5, paint);
231 });
232 }
233