| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkBlendMode.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkSamplingOptions.h" |
| #include "include/core/SkShader.h" // IWYU pragma: keep |
| #include "include/core/SkTileMode.h" |
| #include "src/core/SkTraceEvent.h" |
| #include "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| #if defined(SK_GANESH) |
| #include "include/gpu/GrRecordingContext.h" |
| #endif |
| |
| #include <cstdarg> |
| #include <cstdint> |
| |
| using namespace skiagm; |
| |
| static void draw_failure_message(SkCanvas* canvas, const char format[], ...) SK_PRINTF_LIKE(2, 3); |
| |
| static void draw_failure_message(SkCanvas* canvas, const char format[], ...) { |
| SkString failureMsg; |
| |
| va_list argp; |
| va_start(argp, format); |
| failureMsg.appendVAList(format, argp); |
| va_end(argp); |
| |
| constexpr SkScalar kOffset = 5.0f; |
| canvas->drawColor(SkColorSetRGB(200,0,0)); |
| SkFont font = ToolUtils::DefaultPortableFont(); |
| SkRect bounds; |
| font.measureText(failureMsg.c_str(), failureMsg.size(), SkTextEncoding::kUTF8, &bounds); |
| SkPaint textPaint(SkColors::kWhite); |
| canvas->drawString(failureMsg, kOffset, bounds.height() + kOffset, font, textPaint); |
| } |
| |
| static void draw_gpu_only_message(SkCanvas* canvas) { |
| SkBitmap bmp; |
| bmp.allocN32Pixels(128, 64); |
| SkCanvas bmpCanvas(bmp); |
| bmpCanvas.drawColor(SK_ColorWHITE); |
| SkFont font(ToolUtils::DefaultPortableTypeface(), 20); |
| SkPaint paint(SkColors::kRed); |
| bmpCanvas.drawString("GPU Only", 20, 40, font, paint); |
| SkMatrix localM; |
| localM.setRotate(35.f); |
| localM.postTranslate(10.f, 0.f); |
| paint.setShader(bmp.makeShader(SkTileMode::kMirror, SkTileMode::kMirror, |
| SkSamplingOptions(SkFilterMode::kLinear, |
| SkMipmapMode::kNearest), |
| localM)); |
| canvas->drawPaint(paint); |
| } |
| |
| static void handle_gm_failure(SkCanvas* canvas, DrawResult result, const SkString& errorMsg) { |
| if (DrawResult::kFail == result) { |
| draw_failure_message(canvas, "DRAW FAILED: %s", errorMsg.c_str()); |
| } else if (SkString(GM::kErrorMsg_DrawSkippedGpuOnly) == errorMsg) { |
| draw_gpu_only_message(canvas); |
| } else { |
| draw_failure_message(canvas, "DRAW SKIPPED: %s", errorMsg.c_str()); |
| } |
| } |
| |
| GM::GM(SkColor bgColor) { |
| fMode = kGM_Mode; |
| fBGColor = bgColor; |
| } |
| |
| GM::~GM() {} |
| |
| DrawResult GM::gpuSetup(SkCanvas* canvas, |
| SkString* errorMsg, |
| GraphiteTestContext* graphiteTestContext) { |
| TRACE_EVENT1("GM", TRACE_FUNC, "name", TRACE_STR_COPY(this->getName().c_str())); |
| if (!fGpuSetup) { |
| // When drawn in viewer, gpuSetup will be called multiple times with the same |
| // GrContext or graphite::Context. |
| fGpuSetup = true; |
| fGpuSetupResult = this->onGpuSetup(canvas, errorMsg, graphiteTestContext); |
| } |
| if (fGpuSetupResult == DrawResult::kOk) { |
| fGraphiteTestContext = graphiteTestContext; |
| } else { |
| handle_gm_failure(canvas, fGpuSetupResult, *errorMsg); |
| } |
| |
| return fGpuSetupResult; |
| } |
| |
| void GM::gpuTeardown() { |
| this->onGpuTeardown(); |
| |
| // After 'gpuTeardown' a GM can be reused with a different GrContext or graphite::Context. Reset |
| // the flag so 'onGpuSetup' will be called. |
| fGpuSetup = false; |
| fGraphiteTestContext = nullptr; |
| } |
| |
| DrawResult GM::draw(SkCanvas* canvas, SkString* errorMsg) { |
| TRACE_EVENT1("GM", TRACE_FUNC, "name", TRACE_STR_COPY(this->getName().c_str())); |
| this->drawBackground(canvas); |
| return this->drawContent(canvas, errorMsg); |
| } |
| |
| DrawResult GM::drawContent(SkCanvas* canvas, SkString* errorMsg) { |
| TRACE_EVENT0("GM", TRACE_FUNC); |
| this->onceBeforeDraw(); |
| SkAutoCanvasRestore acr(canvas, true); |
| DrawResult drawResult = this->onDraw(canvas, errorMsg); |
| if (DrawResult::kOk != drawResult) { |
| handle_gm_failure(canvas, drawResult, *errorMsg); |
| } |
| return drawResult; |
| } |
| |
| void GM::drawBackground(SkCanvas* canvas) { |
| TRACE_EVENT0("GM", TRACE_FUNC); |
| this->onceBeforeDraw(); |
| canvas->drawColor(fBGColor, SkBlendMode::kSrc); |
| } |
| |
| DrawResult GM::onDraw(SkCanvas* canvas, SkString* errorMsg) { |
| this->onDraw(canvas); |
| return DrawResult::kOk; |
| } |
| void GM::onDraw(SkCanvas*) { SK_ABORT("Not implemented."); } |
| |
| SkISize SimpleGM::getISize() { return fSize; } |
| SkString SimpleGM::getName() const { return fName; } |
| DrawResult SimpleGM::onDraw(SkCanvas* canvas, SkString* errorMsg) { |
| return fDrawProc(canvas, errorMsg); |
| } |
| |
| #if defined(SK_GANESH) |
| SkISize SimpleGpuGM::getISize() { return fSize; } |
| SkString SimpleGpuGM::getName() const { return fName; } |
| DrawResult SimpleGpuGM::onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) { |
| return fDrawProc(rContext, canvas, errorMsg); |
| } |
| #endif |
| |
| void GM::setBGColor(SkColor color) { |
| fBGColor = color; |
| } |
| |
| bool GM::animate(double nanos) { return this->onAnimate(nanos); } |
| |
| bool GM::runAsBench() const { return false; } |
| |
| void GM::onOnceBeforeDraw() {} |
| |
| bool GM::onAnimate(double /*nanos*/) { return false; } |
| |
| bool GM::onChar(SkUnichar uni) { return false; } |
| |
| bool GM::onGetControls(SkMetaData*) { return false; } |
| |
| void GM::onSetControls(const SkMetaData&) {} |
| |
| ///////////////////////////////////////////////////////////////////////////////////////////// |
| |
| void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) { |
| canvas->drawRect(SkRect::Make(this->getISize()), SkPaint(SkColor4f::FromColor(color))); |
| } |
| |
| // need to explicitly declare this, or we get some weird infinite loop llist |
| template GMRegistry* GMRegistry::gHead; |
| |
| #if defined(SK_GANESH) |
| DrawResult GpuGM::onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) { |
| this->onDraw(rContext, canvas); |
| return DrawResult::kOk; |
| } |
| void GpuGM::onDraw(GrRecordingContext*, SkCanvas*) { |
| SK_ABORT("Not implemented."); |
| } |
| |
| DrawResult GpuGM::onDraw(SkCanvas* canvas, SkString* errorMsg) { |
| |
| auto rContext = canvas->recordingContext(); |
| if (!rContext) { |
| *errorMsg = kErrorMsg_DrawSkippedGpuOnly; |
| return DrawResult::kSkip; |
| } |
| if (rContext->abandoned()) { |
| *errorMsg = "GrContext abandoned."; |
| return DrawResult::kSkip; |
| } |
| return this->onDraw(rContext, canvas, errorMsg); |
| } |
| #endif |
| |
| template <typename Fn> |
| static void mark(SkCanvas* canvas, SkScalar x, SkScalar y, Fn&& fn) { |
| SkPaint alpha; |
| alpha.setAlpha(0x50); |
| canvas->saveLayer(nullptr, &alpha); |
| canvas->translate(x,y); |
| canvas->scale(2,2); |
| fn(); |
| canvas->restore(); |
| } |
| |
| void MarkGMGood(SkCanvas* canvas, SkScalar x, SkScalar y) { |
| mark(canvas, x,y, [&]{ |
| // A green circle. |
| canvas->drawCircle(0, 0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(27, 158, 119)))); |
| |
| // Cut out a check mark. |
| SkPaint paint(SkColors::kTransparent); |
| paint.setBlendMode(SkBlendMode::kSrc); |
| paint.setStrokeWidth(2); |
| paint.setStyle(SkPaint::kStroke_Style); |
| canvas->drawLine(-6, 0, |
| -1, 5, paint); |
| canvas->drawLine(-1, +5, |
| +7, -5, paint); |
| }); |
| } |
| |
| void MarkGMBad(SkCanvas* canvas, SkScalar x, SkScalar y) { |
| mark(canvas, x,y, [&] { |
| // A red circle. |
| canvas->drawCircle(0,0, 12, SkPaint(SkColor4f::FromColor(SkColorSetRGB(231, 41, 138)))); |
| |
| // Cut out an 'X'. |
| SkPaint paint(SkColors::kTransparent); |
| paint.setBlendMode(SkBlendMode::kSrc); |
| paint.setStrokeWidth(2); |
| paint.setStyle(SkPaint::kStroke_Style); |
| canvas->drawLine(-5,-5, |
| +5,+5, paint); |
| canvas->drawLine(+5,-5, |
| -5,+5, paint); |
| }); |
| } |
| |
| namespace skiagm { |
| void Register(skiagm::GM* gm) { |
| // The skiagm::GMRegistry class is a subclass of sk_tools::Registry. Instances of |
| // sk_tools::Registry form a linked list (there is one such list for each subclass), where each |
| // instance holds a value and a pointer to the next sk_tools::Registry instance. The head of |
| // this linked list is stored in a global variable. The sk_tools::Registry constructor |
| // automatically pushes a new instance to the head of said linked list. Therefore, in order to |
| // register a value in the GM registry, it suffices to just instantiate skiagm::GMRegistry with |
| // the value we wish to register. |
| new skiagm::GMRegistry([=]() { return std::unique_ptr<skiagm::GM>(gm); }); |
| } |
| } // namespace skiagm |