/*
* 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.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkTypeface.h"
// effects
#include "SkGradientShader.h"
#include "SkUnitMappers.h"
#include "SkBlurDrawLooper.h"
static void makebm(SkBitmap* bm, SkBitmap::Config config, int w, int h) {
bm->setConfig(config, w, h);
bm->allocPixels();
bm->eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(*bm);
SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(w), SkIntToScalar(h)} };
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
SkScalar pos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
SkPaint paint;
SkUnitMapper* um = NULL;
um = new SkCosineMapper;
// um = new SkDiscreteMapper(12);
SkAutoUnref au(um);
paint.setDither(true);
paint.setShader(SkGradientShader::CreateLinear(pts, colors, pos,
SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode, um))->unref();
canvas.drawPaint(paint);
}
static void setup(SkPaint* paint, const SkBitmap& bm, SkPaint::FilterLevel filter_level,
SkShader::TileMode tmx, SkShader::TileMode tmy) {
SkShader* shader = SkShader::CreateBitmapShader(bm, tmx, tmy);
paint->setShader(shader)->unref();
paint->setFilterLevel(filter_level);
}
static const SkBitmap::Config gConfigs[] = {
SkBitmap::kARGB_8888_Config,
SkBitmap::kRGB_565_Config,
};
class ScaledTilingGM : public skiagm::GM {
SkBlurDrawLooper fLooper;
public:
ScaledTilingGM(bool powerOfTwoSize)
: fLooper(SkIntToScalar(1), SkIntToScalar(2), SkIntToScalar(2), 0x88000000)
, fPowerOfTwoSize(powerOfTwoSize) {
}
SkBitmap fTexture[SK_ARRAY_COUNT(gConfigs)];
protected:
enum {
kPOTSize = 4,
kNPOTSize = 3,
};
SkString onShortName() {
SkString name("scaled_tilemodes");
if (!fPowerOfTwoSize) {
name.append("_npot");
}
return name;
}
SkISize onISize() { return SkISize::Make(880, 760); }
virtual void onOnceBeforeDraw() SK_OVERRIDE {
int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) {
makebm(&fTexture[i], gConfigs[i], size, size);
}
}
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
float scale = 32.f/kPOTSize;
int size = fPowerOfTwoSize ? kPOTSize : kNPOTSize;
SkRect r = { 0, 0, SkIntToScalar(size*2), SkIntToScalar(size*2) };
static const char* gConfigNames[] = { "8888" , "565", "4444" };
static const SkPaint::FilterLevel gFilterLevels[] =
{ SkPaint::kNone_FilterLevel,
SkPaint::kLow_FilterLevel,
SkPaint::kMedium_FilterLevel,
SkPaint::kHigh_FilterLevel };
static const char* gFilterNames[] = { "None", "Low", "Medium", "High" };
static const SkShader::TileMode gModes[] = { SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode };
static const char* gModeNames[] = { "C", "R", "M" };
SkScalar y = SkIntToScalar(24);
SkScalar x = SkIntToScalar(10)/scale;
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
SkPaint p;
SkString str;
p.setAntiAlias(true);
p.setDither(true);
p.setLooper(&fLooper);
str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
p.setTextAlign(SkPaint::kCenter_Align);
canvas->drawText(str.c_str(), str.size(), scale*(x + r.width()/2), y, p);
x += r.width() * 4 / 3;
}
}
y = SkIntToScalar(40) / scale;
for (size_t i = 0; i < SK_ARRAY_COUNT(gConfigs); i++) {
for (size_t j = 0; j < SK_ARRAY_COUNT(gFilterLevels); j++) {
x = SkIntToScalar(10)/scale;
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
SkPaint paint;
#if 1 // Temporary change to regen bitmap before each draw. This may help tracking down an issue
// on SGX where resizing NPOT textures to POT textures exhibits a driver bug.
if (!fPowerOfTwoSize) {
makebm(&fTexture[i], gConfigs[i], size, size);
}
#endif
setup(&paint, fTexture[i], gFilterLevels[j], gModes[kx], gModes[ky]);
paint.setDither(true);
canvas->save();
canvas->scale(scale,scale);
canvas->translate(x, y);
canvas->drawRect(r, paint);
canvas->restore();
x += r.width() * 4 / 3;
}
}
{
SkPaint p;
SkString str;
p.setAntiAlias(true);
p.setLooper(&fLooper);
str.printf("%s, %s", gConfigNames[i], gFilterNames[j]);
canvas->drawText(str.c_str(), str.size(), scale*x, scale*(y + r.height() * 2 / 3), p);
}
y += r.height() * 4 / 3;
}
}
}
private:
bool fPowerOfTwoSize;
typedef skiagm::GM INHERITED;
};
static const int gWidth = 32;
static const int gHeight = 32;
static SkShader* make_bm(SkShader::TileMode tx, SkShader::TileMode ty) {
SkBitmap bm;
makebm(&bm, SkBitmap::kARGB_8888_Config, gWidth, gHeight);
return SkShader::CreateBitmapShader(bm, tx, ty);
}
static SkShader* make_grad(SkShader::TileMode tx, SkShader::TileMode ty) {
SkPoint pts[] = { { 0, 0 }, { SkIntToScalar(gWidth), SkIntToScalar(gHeight)} };
SkPoint center = { SkIntToScalar(gWidth)/2, SkIntToScalar(gHeight)/2 };
SkScalar rad = SkIntToScalar(gWidth)/2;
SkColor colors[] = { 0xFFFF0000, 0xFF0044FF };
int index = (int)ty;
switch (index % 3) {
case 0:
return SkGradientShader::CreateLinear(pts, colors, NULL, SK_ARRAY_COUNT(colors), tx);
case 1:
return SkGradientShader::CreateRadial(center, rad, colors, NULL, SK_ARRAY_COUNT(colors), tx);
case 2:
return SkGradientShader::CreateSweep(center.fX, center.fY, colors, NULL, SK_ARRAY_COUNT(colors));
}
return NULL;
}
typedef SkShader* (*ShaderProc)(SkShader::TileMode, SkShader::TileMode);
class ScaledTiling2GM : public skiagm::GM {
ShaderProc fProc;
SkString fName;
public:
ScaledTiling2GM(ShaderProc proc, const char name[]) : fProc(proc) {
fName.printf("scaled_tilemode_%s", name);
}
protected:
SkString onShortName() {
return fName;
}
SkISize onISize() { return SkISize::Make(880, 560); }
virtual void onDraw(SkCanvas* canvas) {
canvas->scale(SkIntToScalar(3)/2, SkIntToScalar(3)/2);
const SkScalar w = SkIntToScalar(gWidth);
const SkScalar h = SkIntToScalar(gHeight);
SkRect r = { -w, -h, w*2, h*2 };
static const SkShader::TileMode gModes[] = {
SkShader::kClamp_TileMode, SkShader::kRepeat_TileMode, SkShader::kMirror_TileMode
};
static const char* gModeNames[] = {
"Clamp", "Repeat", "Mirror"
};
SkScalar y = SkIntToScalar(24);
SkScalar x = SkIntToScalar(66);
SkPaint p;
p.setAntiAlias(true);
p.setTextAlign(SkPaint::kCenter_Align);
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
SkString str(gModeNames[kx]);
canvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
x += r.width() * 4 / 3;
}
y += SkIntToScalar(16) + h;
p.setTextAlign(SkPaint::kRight_Align);
for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
x = SkIntToScalar(16) + w;
SkString str(gModeNames[ky]);
canvas->drawText(str.c_str(), str.size(), x, y + h/2, p);
x += SkIntToScalar(50);
for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
SkPaint paint;
paint.setShader(fProc(gModes[kx], gModes[ky]))->unref();
canvas->save();
canvas->translate(x, y);
canvas->drawRect(r, paint);
canvas->restore();
x += r.width() * 4 / 3;
}
y += r.height() * 4 / 3;
}
}
private:
typedef skiagm::GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ScaledTilingGM(true); )
DEF_GM( return new ScaledTilingGM(false); )
DEF_GM( return new ScaledTiling2GM(make_bm, "bitmap"); )
DEF_GM( return new ScaledTiling2GM(make_grad, "gradient"); )