1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "freeze_controller.h"
17
18 #include <securec.h>
19
20 #include "display_manager_service_inner.h"
21 #include "pixel_map.h"
22 #include "surface_draw.h"
23 #include "window_manager_hilog.h"
24 #include "window_option.h"
25 #include "wm_common.h"
26
27 namespace OHOS {
28 namespace Rosen {
29 namespace {
30 constexpr HiviewDFX::HiLogLabel LABEL = {LOG_CORE, HILOG_DOMAIN_WINDOW, "FreezeController"};
31 }
32
FreezeDisplay(DisplayId displayId)33 bool FreezeController::FreezeDisplay(DisplayId displayId)
34 {
35 sptr<Window> window = CreateCoverWindow(displayId);
36 if (window == nullptr) {
37 return false;
38 }
39
40 WMError res = window->Show();
41 if (res != WMError::WM_OK) {
42 WLOGFE("Show window failed");
43 return false;
44 }
45 std::shared_ptr<Media::PixelMap> pixelMap = DisplayManagerServiceInner::GetInstance().GetDisplaySnapshot(displayId);
46 if (pixelMap == nullptr) {
47 WLOGE("freeze display fail, pixel map is null. display %{public}" PRIu64"", displayId);
48 return false;
49 }
50 return SurfaceDraw::DrawImage(window->GetSurfaceNode(), window->GetRect().width_,
51 window->GetRect().height_, pixelMap);
52 }
53
UnfreezeDisplay(DisplayId displayId)54 bool FreezeController::UnfreezeDisplay(DisplayId displayId)
55 {
56 auto iter = coverWindowMap_.find(displayId);
57 if (iter == coverWindowMap_.end()) {
58 WLOGW("unfreeze fail, no cover window. display %{public}" PRIu64"", displayId);
59 return false;
60 }
61 sptr<Window> window = iter->second;
62 if (window == nullptr) {
63 WLOGW("unfreeze fail, window is null. display %{public}" PRIu64"", displayId);
64 return false;
65 }
66 return WMError::WM_OK == window->Destroy();
67 }
68
CreateCoverWindow(DisplayId displayId)69 sptr<Window> FreezeController::CreateCoverWindow(DisplayId displayId)
70 {
71 sptr<WindowOption> option = new (std::nothrow) WindowOption();
72 if (option == nullptr) {
73 WLOGFE("window option is null");
74 return nullptr;
75 }
76 option->SetWindowType(WindowType::WINDOW_TYPE_FREEZE_DISPLAY);
77 option->SetFocusable(false);
78 option->SetMainHandlerAvailable(false);
79 option->RemoveWindowFlag(WindowFlag::WINDOW_FLAG_NEED_AVOID);
80 option->SetDisplayId(displayId);
81 sptr<Window> window = Window::Create("freeze" + std::to_string(displayId), option);
82 if (window == nullptr) {
83 WLOGFE("cover window is null");
84 return nullptr;
85 }
86 coverWindowMap_[displayId] = window;
87 return window;
88 }
89 } // Rosen
90 } // OHOS