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/*
* Copyright (C) 2007 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 <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <ui/GraphicBuffer.h>
#include "LayerDim.h"
#include "SurfaceFlinger.h"
#include "DisplayDevice.h"
#include "RenderEngine/RenderEngine.h"
namespace android {
// ---------------------------------------------------------------------------
LayerDim::LayerDim(SurfaceFlinger* flinger, const sp<Client>& client,
const String8& name, uint32_t w, uint32_t h, uint32_t flags)
: Layer(flinger, client, name, w, h, flags) {
}
LayerDim::~LayerDim() {
}
void LayerDim::onDraw(const sp<const DisplayDevice>& hw,
const Region& /* clip */, bool useIdentityTransform) const
{
const State& s(getDrawingState());
if (s.alpha>0) {
Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2);
computeGeometry(hw, mesh, useIdentityTransform);
RenderEngine& engine(mFlinger->getRenderEngine());
engine.setupDimLayerBlending(s.alpha);
engine.drawMesh(mesh);
engine.disableBlending();
}
}
bool LayerDim::isVisible() const {
const Layer::State& s(getDrawingState());
return !(s.flags & layer_state_t::eLayerHidden) && s.alpha;
}
// ---------------------------------------------------------------------------
}; // namespace android
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