bool SkWindow::update(SkIRect* updateArea) {
if (!fDirtyRgn.isEmpty()) {
SkBitmap bm = this->getBitmap();
#if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
char* buffer = (char*)GXBeginDraw();
SkASSERT(buffer);
RECT rect;
GetWindowRect((HWND)((SkOSWindow*)this)->getHWND(), &rect);
buffer += rect.top * gDisplayProps.cbyPitch + rect.left * gDisplayProps.cbxPitch;
bm.setPixels(buffer);
#endif
SkAutoTUnref<SkSurface> surface(this->createSurface());
SkCanvas* canvas = surface->getCanvas();
canvas->clipRegion(fDirtyRgn);
if (updateArea)
*updateArea = fDirtyRgn.getBounds();
SkAutoCanvasRestore acr(canvas, true);
canvas->concat(fMatrix);
// empty this now, so we can correctly record any inval calls that
// might be made during the draw call.
fDirtyRgn.setEmpty();
#ifdef SK_SIMULATE_FAILED_MALLOC
gEnableControlledThrow = true;
#endif
#ifdef SK_BUILD_FOR_WIN32
//try {
this->draw(canvas);
//}
//catch (...) {
//}
#else
this->draw(canvas);
#endif
#ifdef SK_SIMULATE_FAILED_MALLOC
gEnableControlledThrow = false;
#endif
#if defined(SK_BUILD_FOR_WINCE) && defined(USE_GX_SCREEN)
GXEndDraw();
#endif
return true;
}
return false;
}
SkCanvas* TiledPictureRenderer::setupCanvas(int width, int height) {
SkCanvas* canvas = this->INHERITED::setupCanvas(width, height);
SkASSERT(fPicture);
// Clip the tile to an area that is completely inside both the SkPicture and the viewport. This
// is mostly important for tiles on the right and bottom edges as they may go over this area and
// the picture may have some commands that draw outside of this area and so should not actually
// be written.
// Uses a clipRegion so that it will be unaffected by the scale factor, which may have been set
// by INHERITED::setupCanvas.
SkRegion clipRegion;
clipRegion.setRect(0, 0, this->getViewWidth(), this->getViewHeight());
canvas->clipRegion(clipRegion);
return canvas;
}
bool SkWindow::update(SkIRect* updateArea) {
if (!fDirtyRgn.isEmpty()) {
SkAutoTUnref<SkSurface> surface(this->createSurface());
SkCanvas* canvas = surface->getCanvas();
canvas->clipRegion(fDirtyRgn);
if (updateArea) {
*updateArea = fDirtyRgn.getBounds();
}
SkAutoCanvasRestore acr(canvas, true);
canvas->concat(fMatrix);
// empty this now, so we can correctly record any inval calls that
// might be made during the draw call.
fDirtyRgn.setEmpty();
#ifdef SK_SIMULATE_FAILED_MALLOC
gEnableControlledThrow = true;
#endif
#ifdef SK_BUILD_FOR_WIN32
//try {
this->draw(canvas);
//}
//catch (...) {
//}
#else
this->draw(canvas);
#endif
#ifdef SK_SIMULATE_FAILED_MALLOC
gEnableControlledThrow = false;
#endif
return true;
}
return false;
}
static void test_complex_clips(skiatest::Reporter* reporter) {
#ifdef SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG
const int WIDTH = 400;
const int HEIGHT = 400;
const int SPACER = 10;
SkIRect layerRect = SkIRect::MakeWH(WIDTH, HEIGHT / 4);
layerRect.inset(2*SPACER, 2*SPACER);
SkIRect clipRect = layerRect;
clipRect.fRight = clipRect.fLeft + (clipRect.width() / 2) - (2*SPACER);
clipRect.outset(SPACER, SPACER);
SkIRect regionBounds = clipRect;
regionBounds.offset(clipRect.width() + (2*SPACER), 0);
SkIRect regionInterior = regionBounds;
regionInterior.inset(SPACER*3, SPACER*3);
SkRegion clipRegion;
clipRegion.setRect(regionBounds);
clipRegion.op(regionInterior, SkRegion::kDifference_Op);
const SkRegion::Op clipOps[] = { SkRegion::kIntersect_Op,
SkRegion::kIntersect_Op,
SkRegion::kReplace_Op,
};
const SkCanvas::SaveFlags flags[] = { SkCanvas::kARGB_NoClipLayer_SaveFlag,
SkCanvas::kARGB_ClipLayer_SaveFlag,
SkCanvas::kARGB_NoClipLayer_SaveFlag,
};
REPORTER_ASSERT(reporter, sizeof(clipOps) == sizeof(flags));
const int layerCombinations = sizeof(flags) / sizeof(SkCanvas::SaveFlags);
SkBitmap bitmaps[2];
for (int i = 0; i < 2; ++i) {
bitmaps[i].allocN32Pixels(WIDTH, HEIGHT);
SkCanvas canvas(bitmaps[i]);
canvas.drawColor(SK_ColorRED);
SkRegion localRegion = clipRegion;
for (int j = 0; j < layerCombinations; ++j) {
SkRect layerBounds = SkRect::Make(layerRect);
canvas.saveLayerAlpha(&layerBounds, 128, flags[j]);
SkCanvasState* state = NULL;
SkCanvas* tmpCanvas = NULL;
if (i) {
state = SkCanvasStateUtils::CaptureCanvasState(&canvas);
REPORTER_ASSERT(reporter, state);
tmpCanvas = SkCanvasStateUtils::CreateFromCanvasState(state);
REPORTER_ASSERT(reporter, tmpCanvas);
} else {
tmpCanvas = SkRef(&canvas);
}
tmpCanvas->save();
tmpCanvas->clipRect(SkRect::Make(clipRect), clipOps[j]);
tmpCanvas->drawColor(SK_ColorBLUE);
tmpCanvas->restore();
tmpCanvas->clipRegion(localRegion, clipOps[j]);
tmpCanvas->drawColor(SK_ColorBLUE);
tmpCanvas->unref();
SkCanvasStateUtils::ReleaseCanvasState(state);
canvas.restore();
// translate the canvas and region for the next iteration
canvas.translate(0, SkIntToScalar(2*(layerRect.height() + (SPACER))));
localRegion.translate(0, 2*(layerRect.height() + SPACER));
}
}
// now we memcmp the two bitmaps
REPORTER_ASSERT(reporter, bitmaps[0].getSize() == bitmaps[1].getSize());
REPORTER_ASSERT(reporter, !memcmp(bitmaps[0].getPixels(),
bitmaps[1].getPixels(),
bitmaps[0].getSize()));
#endif
}
static jobject Surface_lockCanvas(JNIEnv* env, jobject clazz, jobject dirtyRect)
{
const sp<Surface>& surface(getSurface(env, clazz));
if (!Surface::isValid(surface)) {
doThrowIAE(env);
return 0;
}
// get dirty region
Region dirtyRegion;
if (dirtyRect) {
Rect dirty;
dirty.left = env->GetIntField(dirtyRect, ro.l);
dirty.top = env->GetIntField(dirtyRect, ro.t);
dirty.right = env->GetIntField(dirtyRect, ro.r);
dirty.bottom= env->GetIntField(dirtyRect, ro.b);
if (!dirty.isEmpty()) {
dirtyRegion.set(dirty);
}
} else {
dirtyRegion.set(Rect(0x3FFF,0x3FFF));
}
Surface::SurfaceInfo info;
status_t err = surface->lock(&info, &dirtyRegion);
if (err < 0) {
const char* const exception = (err == NO_MEMORY) ?
OutOfResourcesException :
"java/lang/IllegalArgumentException";
jniThrowException(env, exception, NULL);
return 0;
}
// Associate a SkCanvas object to this surface
jobject canvas = env->GetObjectField(clazz, so.canvas);
env->SetIntField(canvas, co.surfaceFormat, info.format);
SkCanvas* nativeCanvas = (SkCanvas*)env->GetIntField(canvas, no.native_canvas);
SkBitmap bitmap;
ssize_t bpr = info.s * bytesPerPixel(info.format);
bitmap.setConfig(convertPixelFormat(info.format), info.w, info.h, bpr);
if (info.format == PIXEL_FORMAT_RGBX_8888) {
bitmap.setIsOpaque(true);
}
if (info.w > 0 && info.h > 0) {
bitmap.setPixels(info.bits);
} else {
// be safe with an empty bitmap.
bitmap.setPixels(NULL);
}
nativeCanvas->setBitmapDevice(bitmap);
SkRegion clipReg;
if (dirtyRegion.isRect()) { // very common case
const Rect b(dirtyRegion.getBounds());
clipReg.setRect(b.left, b.top, b.right, b.bottom);
} else {
size_t count;
Rect const* r = dirtyRegion.getArray(&count);
while (count) {
clipReg.op(r->left, r->top, r->right, r->bottom, SkRegion::kUnion_Op);
r++, count--;
}
}
nativeCanvas->clipRegion(clipReg);
int saveCount = nativeCanvas->save();
env->SetIntField(clazz, so.saveCount, saveCount);
if (dirtyRect) {
const Rect& bounds(dirtyRegion.getBounds());
env->SetIntField(dirtyRect, ro.l, bounds.left);
env->SetIntField(dirtyRect, ro.t, bounds.top);
env->SetIntField(dirtyRect, ro.r, bounds.right);
env->SetIntField(dirtyRect, ro.b, bounds.bottom);
}
return canvas;
}