void onDraw(SkCanvas* canvas) override {
const struct {
SkISize size;
SkScalar scaleX, scaleY;
SkScalar opacity;
} configs[] = {
{ SkISize::Make(200, 100), 1, 1, 1 },
{ SkISize::Make(200, 200), 1, 1, 1 },
{ SkISize::Make(200, 200), 1, 2, 1 },
{ SkISize::Make(400, 200), 2, 2, 1 },
{ SkISize::Make(200, 100), 1, 1, 0.9f },
{ SkISize::Make(200, 200), 1, 1, 0.75f },
{ SkISize::Make(200, 200), 1, 2, 0.5f },
{ SkISize::Make(400, 200), 2, 2, 0.25f },
{ SkISize::Make(200, 200), 0.5f, 1, 1 },
{ SkISize::Make(200, 200), 1, 0.5f, 1 },
{ SkISize::Make(200, 200), 0.5f, 0.5f, 1 },
{ SkISize::Make(200, 200), 2, 2, 1 },
{ SkISize::Make(200, 100), -1, 1, 1 },
{ SkISize::Make(200, 100), 1, -1, 1 },
{ SkISize::Make(200, 100), -1, -1, 1 },
{ SkISize::Make(200, 100), -1, -1, 0.5f },
};
const unsigned kDrawsPerRow = 4;
const SkScalar kDrawSize = 250;
for (size_t i = 0; i < SK_ARRAY_COUNT(configs); ++i) {
SkPaint p;
p.setAlpha(SkScalarRoundToInt(255 * configs[i].opacity));
SkMatrix m = SkMatrix::MakeScale(configs[i].scaleX, configs[i].scaleY);
if (configs[i].scaleX < 0) {
m.postTranslate(SkIntToScalar(configs[i].size.width()), 0);
}
if (configs[i].scaleY < 0) {
m.postTranslate(0, SkIntToScalar(configs[i].size.height()));
}
SkAutoTDelete<SkImageGenerator> gen(
SkImageGenerator::NewFromPicture(configs[i].size, fPicture.get(), &m,
p.getAlpha() != 255 ? &p : nullptr));
SkBitmap bm;
gen->generateBitmap(&bm);
const SkScalar x = kDrawSize * (i % kDrawsPerRow);
const SkScalar y = kDrawSize * (i / kDrawsPerRow);
p.setColor(0xfff0f0f0);
p.setAlpha(255);
canvas->drawRect(SkRect::MakeXYWH(x, y,
SkIntToScalar(bm.width()),
SkIntToScalar(bm.height())), p);
canvas->drawBitmap(bm, x, y);
}
}
static void textonpath_slide(SkCanvas* canvas) {
const char* text = "Displacement";
size_t len =strlen(text);
SkPath path;
path.moveTo(100, 300);
path.quadTo(300, 100, 500, 300);
path.offset(0, -100);
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(40);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawPath(path, paint);
paint.setStyle(SkPaint::kFill_Style);
SkScalar x = 50;
paint.setColor(0xFF008800);
canvas->drawTextOnPathHV(text, len, path,
x, paint.getTextSize()*2/3, paint);
paint.setColor(SK_ColorRED);
canvas->drawTextOnPathHV(text, len, path,
x + 60, 0, paint);
paint.setColor(SK_ColorBLUE);
canvas->drawTextOnPathHV(text, len, path,
x + 120, -paint.getTextSize()*2/3, paint);
path.offset(0, 200);
paint.setTextAlign(SkPaint::kRight_Align);
text = "Matrices";
len = strlen(text);
SkScalar pathLen = getpathlen(path);
SkMatrix matrix;
paint.setColor(SK_ColorBLACK);
paint.setStyle(SkPaint::kStroke_Style);
canvas->drawPath(path, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setTextSize(50);
canvas->drawTextOnPath(text, len, path, NULL, paint);
paint.setColor(SK_ColorRED);
matrix.setScale(-SK_Scalar1, SK_Scalar1);
matrix.postTranslate(pathLen, 0);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
paint.setColor(SK_ColorBLUE);
matrix.setScale(SK_Scalar1, -SK_Scalar1);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
paint.setColor(0xFF008800);
matrix.setScale(-SK_Scalar1, -SK_Scalar1);
matrix.postTranslate(pathLen, 0);
canvas->drawTextOnPath(text, len, path, &matrix, paint);
}
void SkBitmapDevice::drawSpecial(const SkDraw& draw, SkSpecialImage* srcImg, int x, int y,
const SkPaint& paint) {
SkASSERT(!srcImg->isTextureBacked());
SkBitmap resultBM;
SkImageFilter* filter = paint.getImageFilter();
if (filter) {
SkIPoint offset = SkIPoint::Make(0, 0);
SkMatrix matrix = *draw.fMatrix;
matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
const SkIRect clipBounds = draw.fRC->getBounds().makeOffset(-x, -y);
SkAutoTUnref<SkImageFilterCache> cache(this->getImageFilterCache());
SkImageFilter::OutputProperties outputProperties(fBitmap.colorSpace());
SkImageFilter::Context ctx(matrix, clipBounds, cache.get(), outputProperties);
sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg, ctx, &offset));
if (resultImg) {
SkPaint tmpUnfiltered(paint);
tmpUnfiltered.setImageFilter(nullptr);
if (resultImg->getROPixels(&resultBM)) {
this->drawSprite(draw, resultBM, x + offset.x(), y + offset.y(), tmpUnfiltered);
}
}
} else {
if (srcImg->getROPixels(&resultBM)) {
this->drawSprite(draw, resultBM, x, y, paint);
}
}
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkMatrix matrix;
SkGroupShape* gs = new SkGroupShape;
SkAutoUnref aur(gs);
gs->appendShape(&fGroup);
matrix.setScale(-SK_Scalar1, SK_Scalar1);
matrix.postTranslate(SkIntToScalar(220), SkIntToScalar(240));
gs->appendShape(&fGroup, matrix);
matrix.setTranslate(SkIntToScalar(240), 0);
matrix.preScale(SK_Scalar1*2, SK_Scalar1*2);
gs->appendShape(&fGroup, matrix);
#if 1
SkPicture* pict = new SkPicture;
SkCanvas* cv = pict->beginRecording(1000, 1000);
cv->scale(SK_ScalarHalf, SK_ScalarHalf);
gs->draw(cv);
cv->translate(SkIntToScalar(680), SkIntToScalar(480));
cv->scale(-SK_Scalar1, SK_Scalar1);
gs->draw(cv);
pict->endRecording();
canvas->drawPicture(*pict);
pict->unref();
#endif
}
const GrFragmentProcessor* GrTextureAdjuster::createFragmentProcessor(
const SkMatrix& origTextureMatrix,
const SkRect& origConstraintRect,
FilterConstraint filterConstraint,
bool coordsLimitedToConstraintRect,
const GrTextureParams::FilterMode* filterOrNullForBicubic) {
SkMatrix textureMatrix = origTextureMatrix;
const SkIRect* contentArea = this->contentAreaOrNull();
// Convert the constraintRect to be relative to the texture rather than the content area so
// that both rects are in the same coordinate system.
SkTCopyOnFirstWrite<SkRect> constraintRect(origConstraintRect);
if (contentArea) {
SkScalar l = SkIntToScalar(contentArea->fLeft);
SkScalar t = SkIntToScalar(contentArea->fTop);
constraintRect.writable()->offset(l, t);
textureMatrix.postTranslate(l, t);
}
SkRect domain;
GrTextureParams params;
if (filterOrNullForBicubic) {
params.setFilterMode(*filterOrNullForBicubic);
}
SkAutoTUnref<GrTexture> texture(this->refTextureSafeForParams(params, nullptr));
if (!texture) {
return nullptr;
}
// If we made a copy then we only copied the contentArea, in which case the new texture is all
// content.
if (texture != this->originalTexture()) {
contentArea = nullptr;
}
DomainMode domainMode =
determine_domain_mode(*constraintRect, filterConstraint, coordsLimitedToConstraintRect,
texture->width(), texture->height(),
contentArea, filterOrNullForBicubic,
&domain);
if (kTightCopy_DomainMode == domainMode) {
// TODO: Copy the texture and adjust the texture matrix (both parts need to consider
// non-int constraint rect)
// For now: treat as bilerp and ignore what goes on above level 0.
// We only expect MIP maps to require a tight copy.
SkASSERT(filterOrNullForBicubic &&
GrTextureParams::kMipMap_FilterMode == *filterOrNullForBicubic);
static const GrTextureParams::FilterMode kBilerp = GrTextureParams::kBilerp_FilterMode;
domainMode =
determine_domain_mode(*constraintRect, filterConstraint, coordsLimitedToConstraintRect,
texture->width(), texture->height(),
contentArea, &kBilerp, &domain);
SkASSERT(kTightCopy_DomainMode != domainMode);
}
SkASSERT(kNoDomain_DomainMode == domainMode ||
(domain.fLeft <= domain.fRight && domain.fTop <= domain.fBottom));
textureMatrix.postIDiv(texture->width(), texture->height());
return create_fp_for_domain_and_filter(texture, textureMatrix, domainMode, domain,
filterOrNullForBicubic);
}
void SkPDFDevice::internalDrawBitmap(const SkMatrix& matrix,
const SkBitmap& bitmap,
const SkIRect* srcRect,
const SkPaint& paint) {
SkIRect subset = SkIRect::MakeWH(bitmap.width(), bitmap.height());
if (srcRect && !subset.intersect(*srcRect))
return;
SkPDFImage* image = SkPDFImage::CreateImage(bitmap, subset, paint);
if (!image)
return;
SkMatrix scaled;
// Adjust for origin flip.
scaled.setScale(1, -1);
scaled.postTranslate(0, 1);
// Scale the image up from 1x1 to WxH.
scaled.postScale(SkIntToScalar(subset.width()),
SkIntToScalar(subset.height()));
scaled.postConcat(matrix);
SkMatrix curTransform = setTransform(scaled);
updateGSFromPaint(paint, false);
fXObjectResources.push(image); // Transfer reference.
fContent.writeText("/X");
fContent.writeDecAsText(fXObjectResources.count() - 1);
fContent.writeText(" Do\n");
setTransform(curTransform);
}
ShapesGM() {
SkMatrix m;
fGroup.appendShape(make_shape0(false))->unref();
m.setRotate(SkIntToScalar(30), SkIntToScalar(50), SkIntToScalar(50));
m.postTranslate(0, SkIntToScalar(120));
fGroup.appendShape(make_shape0(true), m)->unref();
m.setTranslate(SkIntToScalar(120), 0);
fGroup.appendShape(make_shape1(), m)->unref();
m.postTranslate(0, SkIntToScalar(120));
fGroup.appendShape(make_shape2(), m)->unref();
for (size_t i = 0; i < SK_ARRAY_COUNT(fMatrixRefs); i++) {
SkSafeRef(fMatrixRefs[i] = fGroup.getShapeMatrixRef(i));
}
}
SkMatrix onGetInitialTransform() const override {
SkMatrix result;
SkScalar scale = 0.8f;
result.setScale(scale, scale);
result.postTranslate(SkIntToScalar(7), SkIntToScalar(23));
return result;
}
static void make_strip(Rec* rec, int texWidth, int texHeight) {
const SkScalar tx = SkIntToScalar(texWidth);
const SkScalar ty = SkIntToScalar(texHeight);
const int n = 24;
rec->fMode = SkCanvas::kTriangleStrip_VertexMode;
rec->fCount = 2 * (n + 1);
rec->fVerts = new SkPoint[rec->fCount];
rec->fTexs = new SkPoint[rec->fCount];
SkPoint* v = rec->fVerts;
SkPoint* t = rec->fTexs;
for (int i = 0; i < n; i++) {
SkScalar cos;
SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos);
v[i*2 + 0].set(cos/2, sin/2);
v[i*2 + 1].set(cos, sin);
t[i*2 + 0].set(tx * i / n, ty);
t[i*2 + 1].set(tx * i / n, 0);
}
v[2*n + 0] = v[0];
v[2*n + 1] = v[1];
t[2*n + 0].set(tx, ty);
t[2*n + 1].set(tx, 0);
SkMatrix m;
m.setScale(SkIntToScalar(100), SkIntToScalar(100));
m.postTranslate(SkIntToScalar(110), SkIntToScalar(110));
m.mapPoints(v, rec->fCount);
}
static void scaleMatrix(const SkPath& one, const SkPath& two, SkMatrix& scale) {
SkRect larger = one.getBounds();
larger.join(two.getBounds());
SkScalar largerWidth = larger.width();
if (largerWidth < 4) {
largerWidth = 4;
}
SkScalar largerHeight = larger.height();
if (largerHeight < 4) {
largerHeight = 4;
}
SkScalar hScale = (bitWidth - 2) / largerWidth;
SkScalar vScale = (bitHeight - 2) / largerHeight;
scale.reset();
scale.preScale(hScale, vScale);
larger.fLeft *= hScale;
larger.fRight *= hScale;
larger.fTop *= vScale;
larger.fBottom *= vScale;
SkScalar dx = -16000 > larger.fLeft ? -16000 - larger.fLeft
: 16000 < larger.fRight ? 16000 - larger.fRight : 0;
SkScalar dy = -16000 > larger.fTop ? -16000 - larger.fTop
: 16000 < larger.fBottom ? 16000 - larger.fBottom : 0;
scale.postTranslate(dx, dy);
}
virtual void onDraw(SkCanvas* canvas) {
SkPoint pts[2] = {
{ 0, 0 },
{ SkIntToScalar(100), SkIntToScalar(100) }
};
SkShader::TileMode tm = SkShader::kClamp_TileMode;
SkRect r = { 0, 0, SkIntToScalar(100), SkIntToScalar(100) };
SkPaint paint;
paint.setAntiAlias(true);
paint.setDither(fDither);
canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
for (size_t i = 0; i < SK_ARRAY_COUNT(gGradData); i++) {
canvas->save();
for (size_t j = 0; j < SK_ARRAY_COUNT(gGradMakers); j++) {
SkMatrix scale = SkMatrix::I();
if (i == 5) { // if the clamp case
scale.setScale(0.5f, 0.5f);
scale.postTranslate(25.f, 25.f);
}
paint.setShader(gGradMakers[j](pts, gGradData[i], tm, scale));
canvas->drawRect(r, paint);
canvas->translate(0, SkIntToScalar(120));
}
canvas->restore();
canvas->translate(SkIntToScalar(120), 0);
}
}
void make_fan(Rec* rec, int texWidth, int texHeight) {
const SkScalar tx = SkIntToScalar(texWidth);
const SkScalar ty = SkIntToScalar(texHeight);
const int n = 24;
rec->fMode = SkCanvas::kTriangleFan_VertexMode;
rec->fCount = n + 2;
rec->fVerts = new SkPoint[rec->fCount];
rec->fTexs = new SkPoint[rec->fCount];
SkPoint* v = rec->fVerts;
SkPoint* t = rec->fTexs;
v[0].set(0, 0);
t[0].set(0, 0);
for (int i = 0; i < n; i++) {
SkScalar cos;
SkScalar sin = SkScalarSinCos(SK_ScalarPI * 2 * i / n, &cos);
v[i+1].set(cos, sin);
t[i+1].set(i*tx/n, ty);
}
v[n+1] = v[1];
t[n+1].set(tx, ty);
SkMatrix m;
m.setScale(SkIntToScalar(100), SkIntToScalar(100));
m.postTranslate(SkIntToScalar(110), SkIntToScalar(110));
m.mapPoints(v, rec->fCount);
}
void SkBaseDevice::drawSpriteWithFilter(const SkDraw& draw, const SkBitmap& bitmap,
int x, int y,
const SkPaint& paint) {
SkImageFilter* filter = paint.getImageFilter();
SkASSERT(filter);
SkIPoint offset = SkIPoint::Make(0, 0);
SkMatrix matrix = *draw.fMatrix;
matrix.postTranslate(SkIntToScalar(-x), SkIntToScalar(-y));
const SkIRect clipBounds = draw.fRC->getBounds().makeOffset(-x, -y);
SkAutoTUnref<SkImageFilterCache> cache(this->getImageFilterCache());
SkImageFilter::Context ctx(matrix, clipBounds, cache.get());
sk_sp<SkSpecialImage> srcImg(SkSpecialImage::internal_fromBM(bitmap, &this->surfaceProps()));
if (!srcImg) {
return; // something disastrous happened
}
sk_sp<SkSpecialImage> resultImg(filter->filterImage(srcImg.get(), ctx, &offset));
if (resultImg) {
SkPaint tmpUnfiltered(paint);
tmpUnfiltered.setImageFilter(nullptr);
SkBitmap resultBM;
if (resultImg->internal_getBM(&resultBM)) {
// TODO: add drawSprite(SkSpecialImage) to SkDevice? (see skbug.com/5073)
this->drawSprite(draw, resultBM, x + offset.x(), y + offset.y(), tmpUnfiltered);
}
}
}
void
DrawTargetSkia::MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aSource);
TempBitmap bitmap = GetBitmapForSurface(aMask);
if (bitmap.mBitmap.colorType() == kAlpha_8_SkColorType) {
mCanvas->drawBitmap(bitmap.mBitmap, aOffset.x, aOffset.y, &paint.mPaint);
} else {
SkPaint maskPaint;
TempBitmap tmpBitmap;
SetPaintPattern(maskPaint, SurfacePattern(aMask, ExtendMode::CLAMP), tmpBitmap);
SkMatrix transform = maskPaint.getShader()->getLocalMatrix();
transform.postTranslate(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
maskPaint.getShader()->setLocalMatrix(transform);
SkLayerRasterizer::Builder builder;
builder.addLayer(maskPaint);
SkAutoTUnref<SkRasterizer> raster(builder.detachRasterizer());
paint.mPaint.setRasterizer(raster.get());
IntSize size = aMask->GetSize();
Rect rect = Rect(aOffset.x, aOffset.y, size.width, size.height);
mCanvas->drawRect(RectToSkRect(rect), paint.mPaint);
}
}
GrTexture* SkPictureImageGenerator::onGenerateTexture(GrContext* ctx, SkImageUsageType usage,
const SkIRect* subset) {
const SkImageInfo& info = this->getInfo();
SkImageInfo surfaceInfo = subset ? info.makeWH(subset->width(), subset->height()) : info;
//
// TODO: respect the usage, by possibly creating a different (pow2) surface
//
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTarget(ctx,
SkSurface::kYes_Budgeted,
surfaceInfo));
if (!surface.get()) {
return nullptr;
}
SkMatrix matrix = fMatrix;
if (subset) {
matrix.postTranslate(-subset->x(), -subset->y());
}
surface->getCanvas()->clear(0); // does NewRenderTarget promise to do this for us?
surface->getCanvas()->drawPicture(fPicture, &matrix, fPaint.getMaybeNull());
SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
if (!image.get()) {
return nullptr;
}
return SkSafeRef(image->getTexture());
}
void
DrawTargetSkia::MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aSource);
SkPaint maskPaint;
TempBitmap tmpBitmap;
SetPaintPattern(maskPaint, SurfacePattern(aMask, ExtendMode::CLAMP), tmpBitmap);
SkMatrix transform = maskPaint.getShader()->getLocalMatrix();
transform.postTranslate(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
maskPaint.getShader()->setLocalMatrix(transform);
SkLayerRasterizer *raster = new SkLayerRasterizer();
raster->addLayer(maskPaint);
SkSafeUnref(paint.mPaint.setRasterizer(raster));
IntSize size = aMask->GetSize();
Rect rect = Rect(aOffset.x, aOffset.y, size.width, size.height);
mCanvas->drawRect(RectToSkRect(rect), paint.mPaint);
}
void QuiltTask::draw() {
SkAutoTUnref<SkPicture> recorded(RecordPicture(fGM.get()));
SkBitmap full;
SetupBitmap(fReference.colorType(), fGM.get(), &full);
SkCanvas fullCanvas(full);
SkBitmap tile;
tile.allocPixels(SkImageInfo::Make(FLAGS_quiltTile, FLAGS_quiltTile,
fReference.colorType(), kPremul_SkAlphaType));
SkCanvas tileCanvas(tile);
for (int y = 0; y < tiles_needed(full.height(), tile.height()); y++) {
for (int x = 0; x < tiles_needed(full.width(), tile.width()); x++) {
SkAutoCanvasRestore ar(&tileCanvas, true/*also save now*/);
const SkScalar xOffset = SkIntToScalar(x * tile.width()),
yOffset = SkIntToScalar(y * tile.height());
SkMatrix matrix = tileCanvas.getTotalMatrix();
matrix.postTranslate(-xOffset, -yOffset);
tileCanvas.setMatrix(matrix);
recorded->draw(&tileCanvas);
tileCanvas.flush();
fullCanvas.drawBitmap(tile, xOffset, yOffset, NULL);
}
}
if (!BitmapsEqual(full, fReference)) {
this->fail();
this->spawnChild(SkNEW_ARGS(WriteTask, (*this, full)));
}
}
static void __createRotationMatrix(int rotation, int width, int height,
SkMatrix &outMatrix) {
// set the position of the image to the middle of the screen
outMatrix.setRotate(rotation, width / 2, height / 2);
outMatrix.postTranslate((DISPLAY_WIDTH - width) / 2,
(DISPLAY_HEIGHT - height) / 2);
}
static void draw_gradients(SkCanvas* canvas,
sk_sp<SkShader> (*makeShader)(const SkPoint[2], const SkMatrix&),
const SkPoint ptsArray[][2], int numImages) {
// Use some nice prime numbers for the rectangle and matrix with
// different scaling along the x and y axes (which is the bug this
// test addresses, where incorrect order of operations mixed up the axes)
SkRect rectGrad = {
SkIntToScalar(43), SkIntToScalar(61),
SkIntToScalar(181), SkIntToScalar(167) };
SkMatrix shaderMat;
shaderMat.setScale(rectGrad.width(), rectGrad.height());
shaderMat.postTranslate(rectGrad.left(), rectGrad.top());
canvas->save();
for (int i = 0; i < numImages; i++) {
// Advance line downwards if necessary.
if (i % IMAGES_X == 0 && i != 0) {
canvas->restore();
canvas->translate(0, TESTGRID_Y);
canvas->save();
}
SkPaint paint;
paint.setShader(makeShader(*ptsArray, shaderMat));
canvas->drawRect(rectGrad, paint);
// Advance to next position.
canvas->translate(TESTGRID_X, 0);
ptsArray++;
}
canvas->restore();
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkMatrix saveM = *fMatrixRefs[3];
SkScalar c = SkIntToScalar(50);
fMatrixRefs[3]->preRotate(SkIntToScalar(30), c, c);
SkMatrix matrix;
SkGroupShape* gs = new SkGroupShape;
SkAutoUnref aur(gs);
gs->appendShape(&fGroup);
matrix.setScale(-SK_Scalar1, SK_Scalar1);
matrix.postTranslate(SkIntToScalar(220), SkIntToScalar(240));
gs->appendShape(&fGroup, matrix);
matrix.setTranslate(SkIntToScalar(240), 0);
matrix.preScale(SK_Scalar1*2, SK_Scalar1*2);
gs->appendShape(&fGroup, matrix);
#if 0
canvas->drawShape(gs);
#else
SkPicture pict;
SkCanvas* cv = pict.beginRecording(1000, 1000);
cv->scale(SK_ScalarHalf, SK_ScalarHalf);
cv->drawShape(gs);
cv->translate(SkIntToScalar(680), SkIntToScalar(480));
cv->scale(-SK_Scalar1, SK_Scalar1);
cv->drawShape(gs);
pict.endRecording();
canvas->drawPicture(pict);
#endif
*fMatrixRefs[3] = saveM;
}
void Matrix::NativePostTranslate(
/* [in] */ Int64 nObj,
/* [in] */ Float dx,
/* [in] */ Float dy)
{
SkMatrix* obj = reinterpret_cast<SkMatrix*>(nObj);
obj->postTranslate(dx, dy);
}
virtual void onDraw(SkCanvas* canvas) {
SkMatrix m;
m.reset();
m.setRotate(33 * SK_Scalar1);
m.postScale(3000 * SK_Scalar1, 3000 * SK_Scalar1);
m.postTranslate(6000 * SK_Scalar1, -5000 * SK_Scalar1);
canvas->concat(m);
SkPaint paint;
paint.setColor(SK_ColorRED);
paint.setAntiAlias(true);
bool success = m.invert(&m);
SkASSERT(success);
(void) success; // silence compiler :(
SkPath path;
SkPoint pt = {10 * SK_Scalar1, 10 * SK_Scalar1};
SkScalar small = 1 / (500 * SK_Scalar1);
m.mapPoints(&pt, 1);
path.addCircle(pt.fX, pt.fY, small);
canvas->drawPath(path, paint);
pt.set(30 * SK_Scalar1, 10 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkRect rect = {pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small};
canvas->drawRect(rect, paint);
SkBitmap bmp;
bmp.setConfig(SkBitmap::kARGB_8888_Config, 2, 2);
bmp.allocPixels();
bmp.lockPixels();
uint32_t* pixels = reinterpret_cast<uint32_t*>(bmp.getPixels());
pixels[0] = SkPackARGB32(0xFF, 0xFF, 0x00, 0x00);
pixels[1] = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
pixels[2] = SkPackARGB32(0x80, 0x00, 0x00, 0x00);
pixels[3] = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
bmp.unlockPixels();
pt.set(30 * SK_Scalar1, 30 * SK_Scalar1);
m.mapPoints(&pt, 1);
SkShader* shader = SkShader::CreateBitmapShader(
bmp,
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode);
SkMatrix s;
s.reset();
s.setScale(SK_Scalar1 / 1000, SK_Scalar1 / 1000);
shader->setLocalMatrix(s);
paint.setShader(shader)->unref();
paint.setAntiAlias(false);
paint.setFilterLevel(SkPaint::kLow_FilterLevel);
rect.setLTRB(pt.fX - small, pt.fY - small,
pt.fX + small, pt.fY + small);
canvas->drawRect(rect, paint);
}
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode) const {
SkASSERT(fLayers);
if (fLayers->empty()) {
return false;
}
if (SkMask::kJustRenderImage_CreateMode != mode) {
if (!compute_bounds(*fLayers, path, matrix, clipBounds, &mask->fBounds))
return false;
}
if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode) {
mask->fFormat = SkMask::kA8_Format;
mask->fRowBytes = mask->fBounds.width();
size_t size = mask->computeImageSize();
if (0 == size) {
return false; // too big to allocate, abort
}
mask->fImage = SkMask::AllocImage(size);
memset(mask->fImage, 0, size);
}
if (SkMask::kJustComputeBounds_CreateMode != mode) {
SkBitmap device;
SkRasterClip rectClip;
SkDraw draw;
SkMatrix translatedMatrix; // this translates us to our local pixels
SkMatrix drawMatrix; // this translates the path by each layer's offset
rectClip.setRect(SkIRect::MakeWH(mask->fBounds.width(), mask->fBounds.height()));
translatedMatrix = matrix;
translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
-SkIntToScalar(mask->fBounds.fTop));
device.installMaskPixels(*mask);
draw.fBitmap = &device;
draw.fMatrix = &drawMatrix;
draw.fRC = &rectClip;
draw.fClip = &rectClip.bwRgn();
// we set the matrixproc in the loop, as the matrix changes each time (potentially)
SkDeque::F2BIter iter(*fLayers);
SkLayerRasterizer_Rec* rec;
while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
drawMatrix = translatedMatrix;
drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
draw.drawPath(path, rec->fPaint);
}
}
return true;
}
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode)
{
if (fLayers.empty())
return false;
if (SkMask::kJustRenderImage_CreateMode != mode)
{
if (!compute_bounds(fLayers, path, matrix, clipBounds, &mask->fBounds))
return false;
}
if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode)
{
mask->fFormat = SkMask::kA8_Format;
mask->fRowBytes = SkToU16(mask->fBounds.width());
mask->fImage = SkMask::AllocImage(mask->computeImageSize());
memset(mask->fImage, 0, mask->computeImageSize());
}
if (SkMask::kJustComputeBounds_CreateMode != mode)
{
SkBitmap device;
SkDraw draw;
SkMatrix translatedMatrix; // this translates us to our local pixels
SkMatrix drawMatrix; // this translates the path by each layer's offset
SkRegion rectClip;
rectClip.setRect(0, 0, mask->fBounds.width(), mask->fBounds.height());
translatedMatrix = matrix;
translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
-SkIntToScalar(mask->fBounds.fTop));
device.setConfig(SkBitmap::kA8_Config, mask->fBounds.width(), mask->fBounds.height(), mask->fRowBytes);
device.setPixels(mask->fImage);
draw.fBitmap = &device;
draw.fMatrix = &drawMatrix;
draw.fClip = &rectClip;
// we set the matrixproc in the loop, as the matrix changes each time (potentially)
draw.fBounder = NULL;
SkDeque::Iter iter(fLayers);
SkLayerRasterizer_Rec* rec;
while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
drawMatrix = translatedMatrix;
drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
draw.drawPath(path, rec->fPaint);
}
}
return true;
}
void SkMatrixImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
SkRect bounds = src;
if (getInput(0)) {
getInput(0)->computeFastBounds(src, &bounds);
}
SkMatrix matrix;
matrix.setTranslate(-bounds.x(), -bounds.y());
matrix.postConcat(fTransform);
matrix.postTranslate(bounds.x(), bounds.y());
matrix.mapRect(dst, bounds);
}
/**
* We need to handle setMatrix specially as it overwrites the matrix in each
* canvas unlike all other matrix operations (i.e. translate, scale, etc) which
* just pre-concatenate with the existing matrix.
*/
void SkCanvasStack::didSetMatrix(const SkMatrix& matrix) {
SkASSERT(fList.count() == fCanvasData.count());
for (int i = 0; i < fList.count(); ++i) {
SkMatrix tempMatrix = matrix;
tempMatrix.postTranslate(SkIntToScalar(-fCanvasData[i].origin.x()),
SkIntToScalar(-fCanvasData[i].origin.y()));
fList[i]->setMatrix(tempMatrix);
}
this->SkCanvas::didSetMatrix(matrix);
}
void onOnceBeforeDraw() override {
const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100);
SkPictureRecorder recorder;
draw_something(recorder.beginRecording(bounds), bounds);
fPicture = recorder.finishRecordingAsPicture();
// extract enough just for the oval.
const SkISize size = SkISize::Make(100, 100);
auto srgbColorSpace = SkColorSpace::MakeSRGB();
SkMatrix matrix;
matrix.setTranslate(-100, -100);
fImage0 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr,
SkImage::BitDepth::kU8, srgbColorSpace);
matrix.postTranslate(-50, -50);
matrix.postRotate(45);
matrix.postTranslate(50, 50);
fImage1 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr,
SkImage::BitDepth::kU8, srgbColorSpace);
}
static SkMatrix pts_to_unit_matrix(const SkPoint pts[2]) {
SkVector vec = pts[1] - pts[0];
SkScalar mag = vec.length();
SkScalar inv = mag ? SkScalarInvert(mag) : 0;
vec.scale(inv);
SkMatrix matrix;
matrix.setSinCos(-vec.fY, vec.fX, pts[0].fX, pts[0].fY);
matrix.postTranslate(-pts[0].fX, -pts[0].fY);
matrix.postScale(inv, inv);
return matrix;
}
/**
* Draw a single rect element of the clip stack into the accumulation bitmap
*/
void GrSWMaskHelper::drawRect(const SkRect& rect, const SkMatrix& matrix, SkRegion::Op op, GrAA aa,
uint8_t alpha) {
SkPaint paint;
paint.setBlendMode(op_to_mode(op));
paint.setAntiAlias(GrAA::kYes == aa);
paint.setColor(SkColorSetARGB(alpha, alpha, alpha, alpha));
SkMatrix translatedMatrix = matrix;
translatedMatrix.postTranslate(fTranslate.fX, fTranslate.fY);
fDraw.fMatrix = &translatedMatrix;
fDraw.drawRect(rect, paint);
}
static CGAffineTransform matrix_to_transform(CGContextRef cg, const SkMatrix& ctm) {
SkMatrix matrix;
matrix.setScale(1, -1);
matrix.postTranslate(0, SkIntToScalar(CGBitmapContextGetHeight(cg)));
matrix.preConcat(ctm);
return CGAffineTransformMake(matrix[SkMatrix::kMScaleX],
matrix[SkMatrix::kMSkewY],
matrix[SkMatrix::kMSkewX],
matrix[SkMatrix::kMScaleY],
matrix[SkMatrix::kMTransX],
matrix[SkMatrix::kMTransY]);
}
