From fb438e9a0f5b49ccd1cef415561dcb4e83bed95a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=BB=84=E6=82=AC?= <huangxuan23@h-partners.com>
Date: Mon, 1 Sep 2025 08:48:48 +0000
Subject: [PATCH] =?UTF-8?q?updater=E7=95=8C=E9=9D=A2=E5=85=B3=E6=9C=BA?=
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Signed-off-by: 黄悬 <huangxuan23@h-partners.com>
---
 services/ui/driver/graphic_engine.cpp | 28 ++++++++++++++++++++-------
 services/ui/driver/graphic_engine.h   |  3 +++
 2 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/services/ui/driver/graphic_engine.cpp b/services/ui/driver/graphic_engine.cpp
index ba95193d..8dc6c86e 100644
--- a/services/ui/driver/graphic_engine.cpp
+++ b/services/ui/driver/graphic_engine.cpp
@@ -102,6 +102,11 @@ __attribute__((weak)) void InitFlushBatteryStatusExt(void)
 {
 }
 
+__attribute__((weak)) void SetBrightness(int value)
+{
+    LOG(INFO) << "not pc, not set backlight";
+}
+
 void GraphicEngine::FlushThreadLoop() const
 {
     while (!flushStop_) {
@@ -110,18 +115,27 @@ void GraphicEngine::FlushThreadLoop() const
         Utils::UsSleep(sleepTime_);
     }
     // clear screen after stop
-    UiRotation::GetInstance().SetDegree(UI_ROTATION_DEGREE::UI_ROTATION_0);
-    uint8_t pixelBytes = OHOS::DrawUtils::GetByteSizeByColorMode(colorMode_);
-    uint32_t picSize = 0;
-    if (__builtin_mul_overflow(width_ * height_, pixelBytes, &picSize)) {
-        return;
+    LOG(INFO) << "disable clear stop stopClear_ = " << stopClear_;
+    if (stopClear_) {
+        UiRotation::GetInstance().SetDegree(UI_ROTATION_DEGREE::UI_ROTATION_0);
+        uint8_t pixelBytes = OHOS::DrawUtils::GetByteSizeByColorMode(colorMode_);
+        uint32_t picSize = 0;
+        if (__builtin_mul_overflow(width_ * height_, pixelBytes, &picSize)) {
+            return;
+        }
+        (void)memset_s(buffInfo_->virAddr, picSize, 0, picSize);
+        sfDev_->Flip(reinterpret_cast<uint8_t *>(buffInfo_->virAddr));
     }
-    (void)memset_s(buffInfo_->virAddr, picSize, 0, picSize);
-    sfDev_->Flip(reinterpret_cast<uint8_t *>(buffInfo_->virAddr));
+}
+
+void GraphicEngine::DisableClearStop(void)
+{
+    stopClear_ = false;
 }
 
 void GraphicEngine::StopEngine(void)
 {
+    SetBrightness(0);
     flushStop_ = true;
     Utils::UsSleep(THREAD_USLEEP_TIME * 10); // 10: wait for stop 100ms
 }
diff --git a/services/ui/driver/graphic_engine.h b/services/ui/driver/graphic_engine.h
index c80dba19..a036388a 100644
--- a/services/ui/driver/graphic_engine.h
+++ b/services/ui/driver/graphic_engine.h
@@ -38,6 +38,7 @@ public:
     uint16_t GetScreenHeight() override;
     void StopEngine(void);
     void SetSleepTime(uint32_t sleepTime);
+    void DisableClearStop(void);
     void HandleScreenPowerDown(bool blank);
 private:
     void FlushThreadLoop() const;
@@ -53,6 +54,7 @@ private:
     uint16_t width_ = 0;
     uint8_t colorMode_ = 0;
     bool flushStop_ = true;
+    bool stopClear_ = true;
     uint32_t sleepTime_ = THREAD_USLEEP_TIME;
     std::mutex mtx_ {};
 };
@@ -64,6 +66,7 @@ extern "C" {
 #endif /* __cplusplus */
 void InitFlushBatteryStatusExt(void);
 void PostInitSurfDev(std::unique_ptr<SurfaceDev> &surfDev, GrSurface &surface);
+void SetBrightness(int value);
 #ifdef __cplusplus
 #if __cplusplus
 }
-- 
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