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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "DisplayRenderArea.h"
#include "DisplayDevice.h"
namespace android {
namespace {
RenderArea::RotationFlags applyDeviceOrientation(bool useIdentityTransform,
const DisplayDevice& display) {
if (!useIdentityTransform) {
return RenderArea::RotationFlags::ROT_0;
}
return ui::Transform::toRotationFlags(display.getOrientation());
}
} // namespace
std::unique_ptr<RenderArea> DisplayRenderArea::create(wp<const DisplayDevice> displayWeak,
const Rect& sourceCrop, ui::Size reqSize,
ui::Dataspace reqDataSpace,
bool useIdentityTransform,
bool allowSecureLayers) {
if (auto display = displayWeak.promote()) {
// Using new to access a private constructor.
return std::unique_ptr<DisplayRenderArea>(
new DisplayRenderArea(std::move(display), sourceCrop, reqSize, reqDataSpace,
useIdentityTransform, allowSecureLayers));
}
return nullptr;
}
DisplayRenderArea::DisplayRenderArea(sp<const DisplayDevice> display, const Rect& sourceCrop,
ui::Size reqSize, ui::Dataspace reqDataSpace,
bool useIdentityTransform, bool allowSecureLayers)
: RenderArea(reqSize, CaptureFill::OPAQUE, reqDataSpace, display->getLayerStackSpaceRect(),
allowSecureLayers, applyDeviceOrientation(useIdentityTransform, *display)),
mDisplay(std::move(display)),
mSourceCrop(sourceCrop) {}
const ui::Transform& DisplayRenderArea::getTransform() const {
return mTransform;
}
Rect DisplayRenderArea::getBounds() const {
return mDisplay->getBounds();
}
int DisplayRenderArea::getHeight() const {
return mDisplay->getHeight();
}
int DisplayRenderArea::getWidth() const {
return mDisplay->getWidth();
}
bool DisplayRenderArea::isSecure() const {
return mAllowSecureLayers && mDisplay->isSecure();
}
sp<const DisplayDevice> DisplayRenderArea::getDisplayDevice() const {
return mDisplay;
}
bool DisplayRenderArea::needsFiltering() const {
// check if the projection from the logical render area
// to the physical render area requires filtering
const Rect& sourceCrop = getSourceCrop();
int width = sourceCrop.width();
int height = sourceCrop.height();
if (getRotationFlags() & ui::Transform::ROT_90) {
std::swap(width, height);
}
return width != getReqWidth() || height != getReqHeight();
}
Rect DisplayRenderArea::getSourceCrop() const {
// use the projected display viewport by default.
if (mSourceCrop.isEmpty()) {
return mDisplay->getLayerStackSpaceRect();
}
// Correct for the orientation when the screen capture request contained
// useIdentityTransform. This will cause the rotation flag to be non 0 since
// it needs to rotate based on the screen orientation to allow the screenshot
// to be taken in the ROT_0 orientation
const auto flags = getRotationFlags();
int width = mDisplay->getLayerStackSpaceRect().getWidth();
int height = mDisplay->getLayerStackSpaceRect().getHeight();
ui::Transform rotation;
rotation.set(flags, width, height);
return rotation.transform(mSourceCrop);
}
} // namespace android
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