104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
|
|
||
|
|
/*
|
||
|
|
* Copyright 2012 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 "SkBitmap.h"
|
||
|
|
#include "SkCanvas.h"
|
||
|
|
#include "SkColor.h"
|
||
|
|
#include "SkMatrix.h"
|
||
|
|
#include "SkPath.h"
|
||
|
|
#include "SkRect.h"
|
||
|
|
#include "SkSize.h"
|
||
|
|
#include "SkString.h"
|
||
|
|
|
||
|
|
namespace skiagm {
|
||
|
|
|
||
|
|
class DrawBitmapMatrixGM : public GM {
|
||
|
|
public:
|
||
|
|
DrawBitmapMatrixGM() {}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
virtual SkString onShortName() SK_OVERRIDE {
|
||
|
|
return SkString("drawbitmapmatrix");
|
||
|
|
}
|
||
|
|
|
||
|
|
virtual SkISize onISize() SK_OVERRIDE { return make_isize(1024, 256); }
|
||
|
|
|
||
|
|
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
|
||
|
|
SkBitmap bm;
|
||
|
|
this->setupBitmap(&bm);
|
||
|
|
|
||
|
|
// Draw normally.
|
||
|
|
SkMatrix matrix;
|
||
|
|
matrix.reset();
|
||
|
|
SkPaint paint;
|
||
|
|
paint.setAntiAlias(true);
|
||
|
|
paint.setDither(true);
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
|
||
|
|
// Draw stretched horizontally and squished vertically.
|
||
|
|
canvas->translate(SkIntToScalar(bm.width() + 5), 0);
|
||
|
|
matrix.setScale(SkIntToScalar(2), SK_ScalarHalf);
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
|
||
|
|
// Draw rotated
|
||
|
|
canvas->translate(SkIntToScalar(bm.width()*2 + 5), 0);
|
||
|
|
matrix.reset();
|
||
|
|
matrix.setRotate(SkIntToScalar(45), SkIntToScalar(bm.width() / 2),
|
||
|
|
SkIntToScalar(bm.height() / 2));
|
||
|
|
canvas->save();
|
||
|
|
canvas->translate(0, SkIntToScalar(10));
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
canvas->restore();
|
||
|
|
|
||
|
|
// Draw with perspective
|
||
|
|
canvas->translate(SkIntToScalar(bm.width() + 15), 0);
|
||
|
|
matrix.reset();
|
||
|
|
matrix.setPerspX(SkScalarDiv(SK_Scalar1, SkIntToScalar(1000)));
|
||
|
|
matrix.setPerspY(SkScalarDiv(SK_Scalar1, SkIntToScalar(1000)));
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
|
||
|
|
// Draw with skew
|
||
|
|
canvas->translate(SkIntToScalar(bm.width() + 5), 0);
|
||
|
|
matrix.reset();
|
||
|
|
matrix.setSkew(SkIntToScalar(2), SkIntToScalar(2));
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
|
||
|
|
// Draw with sin/cos
|
||
|
|
canvas->translate(SkIntToScalar(bm.width() * 4), 0);
|
||
|
|
matrix.reset();
|
||
|
|
matrix.setSinCos(SK_ScalarHalf, SkIntToScalar(2));
|
||
|
|
canvas->drawBitmapMatrix(bm, matrix, &paint);
|
||
|
|
}
|
||
|
|
private:
|
||
|
|
void setupBitmap(SkBitmap* bm) {
|
||
|
|
SkASSERT(bm);
|
||
|
|
static const int SIZE = 64;
|
||
|
|
bm->setConfig(SkBitmap::kARGB_8888_Config, SIZE, SIZE);
|
||
|
|
bm->allocPixels();
|
||
|
|
SkCanvas canvas(*bm);
|
||
|
|
|
||
|
|
SkPaint paint;
|
||
|
|
paint.setColor(SK_ColorGREEN);
|
||
|
|
canvas.drawPaint(paint);
|
||
|
|
|
||
|
|
paint.setColor(SK_ColorBLUE);
|
||
|
|
paint.setAntiAlias(true);
|
||
|
|
SkRect rect = SkRect::MakeWH(SkIntToScalar(SIZE), SkIntToScalar(SIZE));
|
||
|
|
SkPath path;
|
||
|
|
path.addOval(rect);
|
||
|
|
canvas.drawPath(path, paint);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
////////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
static GM* MyFactory(void*) { return new DrawBitmapMatrixGM; }
|
||
|
|
static GMRegistry reg(MyFactory);
|
||
|
|
|
||
|
|
}
|