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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef skiagm_DEFINED
#define skiagm_DEFINED
#include "include/core/SkColor.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/private/SkMacros.h"
#include "tools/Registry.h"
#include <memory>
class GrContext;
class GrRenderTargetContext;
class SkCanvas;
class SkMetaData;
struct GrContextOptions;
#define DEF_GM(CODE) \
static skiagm::GMRegistry SK_MACRO_APPEND_LINE(REG_)(\
[](){return std::unique_ptr<skiagm::GM>([](){ CODE ; }());});
// A Simple GM is a rendering test that does not store state between rendering calls or make use of
// the onOnceBeforeDraw() virtual; it consists of:
// * A name.
// * Prefered width and height.
// * Optionally, a background color (default is white).
// * A standalone function pointer that implements its onDraw method.
#define DEF_SIMPLE_GM(NAME, CANVAS, W, H) \
DEF_SIMPLE_GM_BG_NAME(NAME, CANVAS, W, H, SK_ColorWHITE, SkString(#NAME))
#define DEF_SIMPLE_GM_BG(NAME, CANVAS, W, H, BGCOLOR) \
DEF_SIMPLE_GM_BG_NAME(NAME, CANVAS, W, H, BGCOLOR, SkString(#NAME))
#define DEF_SIMPLE_GM_BG_NAME(NAME, CANVAS, W, H, BGCOLOR, NAME_STR) \
static void SK_MACRO_CONCAT(NAME,_GM_inner)(SkCanvas*); \
DEF_SIMPLE_GM_BG_NAME_CAN_FAIL(NAME, CANVAS,, W, H, BGCOLOR, NAME_STR) { \
SK_MACRO_CONCAT(NAME,_GM_inner)(CANVAS); \
return skiagm::DrawResult::kOk; \
} \
void SK_MACRO_CONCAT(NAME,_GM_inner)(SkCanvas* CANVAS)
#define DEF_SIMPLE_GM_CAN_FAIL(NAME, CANVAS, ERR_MSG, W, H) \
DEF_SIMPLE_GM_BG_NAME_CAN_FAIL(NAME, CANVAS, ERR_MSG, W, H, SK_ColorWHITE, SkString(#NAME))
#define DEF_SIMPLE_GM_BG_CAN_FAIL(NAME, CANVAS, ERR_MSG, W, H, BGCOLOR) \
DEF_SIMPLE_GM_BG_NAME_CAN_FAIL(NAME, CANVAS, ERR_MSG, W, H, BGCOLOR, SkString(#NAME))
#define DEF_SIMPLE_GM_BG_NAME_CAN_FAIL(NAME, CANVAS, ERR_MSG, W, H, BGCOLOR, NAME_STR) \
static skiagm::DrawResult SK_MACRO_CONCAT(NAME,_GM)(SkCanvas*, SkString*); \
DEF_GM(return new skiagm::SimpleGM(BGCOLOR, NAME_STR, {W,H}, SK_MACRO_CONCAT(NAME,_GM));) \
skiagm::DrawResult SK_MACRO_CONCAT(NAME,_GM)(SkCanvas* CANVAS, SkString* ERR_MSG)
// A Simple GpuGM makes direct GPU calls. Its onDraw hook that includes GPU objects as params, and
// is only invoked on GPU configs. Non-GPU configs automatically draw a GPU-only message and abort.
#define DEF_SIMPLE_GPU_GM(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, W, H) \
DEF_SIMPLE_GPU_GM_BG(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, W, H, SK_ColorWHITE)
#define DEF_SIMPLE_GPU_GM_BG(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, W, H, BGCOLOR) \
static void SK_MACRO_CONCAT(NAME,_GM_inner)(GrContext*, GrRenderTargetContext*, SkCanvas*); \
DEF_SIMPLE_GPU_GM_BG_CAN_FAIL(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS,, W, H, \
BGCOLOR) { \
SK_MACRO_CONCAT(NAME,_GM_inner)(GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS); \
return skiagm::DrawResult::kOk; \
} \
void SK_MACRO_CONCAT(NAME,_GM_inner)( \
GrContext* GR_CONTEXT, GrRenderTargetContext* RENDER_TARGET_CONTEXT, SkCanvas* CANVAS)
#define DEF_SIMPLE_GPU_GM_CAN_FAIL(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, ERR_MSG, W, H) \
DEF_SIMPLE_GPU_GM_BG_CAN_FAIL(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, \
ERR_MSG, W, H, SK_ColorWHITE)
#define DEF_SIMPLE_GPU_GM_BG_CAN_FAIL(NAME, GR_CONTEXT, RENDER_TARGET_CONTEXT, CANVAS, ERR_MSG, W, \
H, BGCOLOR) \
static skiagm::DrawResult SK_MACRO_CONCAT(NAME,_GM)( \
GrContext*, GrRenderTargetContext*, SkCanvas*, SkString*); \
DEF_GM(return new skiagm::SimpleGpuGM(BGCOLOR, SkString(#NAME), {W,H}, \
SK_MACRO_CONCAT(NAME,_GM));) \
skiagm::DrawResult SK_MACRO_CONCAT(NAME,_GM)( \
GrContext* GR_CONTEXT, GrRenderTargetContext* RENDER_TARGET_CONTEXT, SkCanvas* CANVAS, \
SkString* ERR_MSG)
namespace skiagm {
enum class DrawResult {
kOk, // Test drew successfully.
kFail, // Test failed to draw.
kSkip // Test is not applicable in this context and should be skipped.
};
class GM {
public:
using DrawResult = skiagm::DrawResult;
GM(SkColor backgroundColor = SK_ColorWHITE);
virtual ~GM();
enum Mode {
kGM_Mode,
kSample_Mode,
kBench_Mode,
};
void setMode(Mode mode) { fMode = mode; }
Mode getMode() const { return fMode; }
static constexpr char kErrorMsg_DrawSkippedGpuOnly[] = "This test is for GPU configs only.";
DrawResult draw(SkCanvas* canvas) {
SkString errorMsg;
return this->draw(canvas, &errorMsg);
}
DrawResult draw(SkCanvas*, SkString* errorMsg);
void drawBackground(SkCanvas*);
DrawResult drawContent(SkCanvas* canvas) {
SkString errorMsg;
return this->drawContent(canvas, &errorMsg);
}
DrawResult drawContent(SkCanvas*, SkString* errorMsg);
SkISize getISize() { return this->onISize(); }
const char* getName();
virtual bool runAsBench() const;
SkScalar width() {
return SkIntToScalar(this->getISize().width());
}
SkScalar height() {
return SkIntToScalar(this->getISize().height());
}
SkColor getBGColor() const { return fBGColor; }
void setBGColor(SkColor);
// helper: fill a rect in the specified color based on the GM's getISize bounds.
void drawSizeBounds(SkCanvas*, SkColor);
bool animate(double /*nanos*/);
virtual bool onChar(SkUnichar);
bool getControls(SkMetaData* controls) { return this->onGetControls(controls); }
void setControls(const SkMetaData& controls) { this->onSetControls(controls); }
virtual void modifyGrContextOptions(GrContextOptions*);
protected:
virtual void onOnceBeforeDraw();
virtual DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg);
virtual void onDraw(SkCanvas*);
virtual SkISize onISize() = 0;
virtual SkString onShortName() = 0;
virtual bool onAnimate(double /*nanos*/);
virtual bool onGetControls(SkMetaData*);
virtual void onSetControls(const SkMetaData&);
private:
Mode fMode;
SkString fShortName;
SkColor fBGColor;
bool fHaveCalledOnceBeforeDraw;
};
using GMFactory = std::unique_ptr<skiagm::GM> (*)();
using GMRegistry = sk_tools::Registry<GMFactory>;
// A GpuGM replaces the onDraw method with one that also accepts GPU objects alongside the
// SkCanvas. Its onDraw is only invoked on GPU configs; on non-GPU configs it will automatically
// draw a GPU-only message and abort.
class GpuGM : public GM {
public:
GpuGM(SkColor backgroundColor = SK_ColorWHITE) : GM(backgroundColor) {}
private:
using GM::onDraw;
DrawResult onDraw(SkCanvas*, SkString* errorMsg) final;
virtual DrawResult onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
SkString* errorMsg);
virtual void onDraw(GrContext*, GrRenderTargetContext*, SkCanvas*);
};
// SimpleGM is intended for basic GMs that can define their entire implementation inside a
// single "draw" function pointer.
class SimpleGM : public GM {
public:
using DrawProc = DrawResult(*)(SkCanvas*, SkString*);
SimpleGM(SkColor bgColor, const SkString& name, const SkISize& size, DrawProc drawProc)
: GM(bgColor), fName(name), fSize(size), fDrawProc(drawProc) {}
private:
SkISize onISize() override;
SkString onShortName() override;
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override;
const SkString fName;
const SkISize fSize;
const DrawProc fDrawProc;
};
class SimpleGpuGM : public GpuGM {
public:
using DrawProc = DrawResult(*)(GrContext*, GrRenderTargetContext*, SkCanvas*, SkString*);
SimpleGpuGM(SkColor bgColor, const SkString& name, const SkISize& size, DrawProc drawProc)
: GpuGM(bgColor), fName(name), fSize(size), fDrawProc(drawProc) {}
private:
SkISize onISize() override;
SkString onShortName() override;
DrawResult onDraw(GrContext* ctx, GrRenderTargetContext* rtc, SkCanvas* canvas,
SkString* errorMsg) override;
const SkString fName;
const SkISize fSize;
const DrawProc fDrawProc;
};
}
void MarkGMGood(SkCanvas*, SkScalar x, SkScalar y);
void MarkGMBad (SkCanvas*, SkScalar x, SkScalar y);
#endif