fixed f0ee94b0 from https://gitee.com/openharmony/graphic_ui/pulls/308

Description:fix snapshot view issue
IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I42GZ2
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

frameworks/common/screen.cpp

@@ -45,7 +45,7 @@ bool Screen::GetCurrentScreenBitmap(ImageInfo& info)
     }
     uint16_t screenWidth = BaseGfxEngine::GetInstance()->GetScreenWidth();
     uint16_t screenHeight = BaseGfxEngine::GetInstance()->GetScreenHeight();
-    info.header.colorMode = bufferInfo->mode;
+    info.header.colorMode = ARGB8888;
     info.dataSize = screenWidth * screenHeight * DrawUtils::GetByteSizeByColorMode(info.header.colorMode);
     info.data = reinterpret_cast<uint8_t*>(ImageCacheMalloc(info));
     if (info.data == nullptr) {
@@ -56,11 +56,21 @@ bool Screen::GetCurrentScreenBitmap(ImageInfo& info)
     info.header.reserved = 0;
     info.header.compressMode = 0;
 
-    if (memcpy_s(static_cast<void *>(const_cast<uint8_t *>(info.data)), info.dataSize,
-                 bufferInfo->virAddr, info.dataSize) != EOK) {
-        ImageCacheFree(info);
-        return false;
-    }
+    Rect screenRect = {0, 0, static_cast<int16_t>(screenWidth - 1), static_cast<int16_t>(screenHeight - 1)};
+    Point dstPos = {0, 0};
+    BlendOption blendOption;
+    blendOption.opacity = OPA_OPAQUE;
+
+    BufferInfo dstBufferInfo;
+    dstBufferInfo.rect = screenRect;
+    dstBufferInfo.mode = ARGB8888;
+    dstBufferInfo.color = 0x44;
+    dstBufferInfo.phyAddr = dstBufferInfo.virAddr = static_cast<void*>(const_cast<uint8_t*>(info.data));
+    dstBufferInfo.stride = screenWidth * 4; // 4: bpp
+    dstBufferInfo.width = screenWidth;
+    dstBufferInfo.height = screenHeight;
+
+    BaseGfxEngine::GetInstance()->Blit(dstBufferInfo, dstPos, *bufferInfo, screenRect, blendOption);
     return true;
 }
 

frameworks/components/ui_view.cpp

@@ -917,7 +917,7 @@ bool UIView::GetBitmap(ImageInfo& bitmap)
     mask.Intersect(mask, screenRect);
     uint16_t bufferWidth = static_cast<uint16_t>(mask.GetWidth());
     uint16_t bufferHeight = static_cast<uint16_t>(mask.GetHeight());
-    bitmap.header.colorMode = bufferInfo->mode;
+    bitmap.header.colorMode = ARGB8888;
     bitmap.dataSize = bufferWidth * bufferHeight * DrawUtils::GetByteSizeByColorMode(bitmap.header.colorMode);
     bitmap.header.width = bufferWidth;
     bitmap.header.height = bufferHeight;
@@ -937,7 +937,7 @@ bool UIView::GetBitmap(ImageInfo& bitmap)
     newBufferInfo.rect = mask;
     newBufferInfo.width = bufferWidth;
     newBufferInfo.height = bufferHeight;
-    newBufferInfo.mode = bufferInfo->mode;
+    newBufferInfo.mode = ARGB8888;
     newBufferInfo.stride = bufferWidth *  DrawUtils::GetByteSizeByColorMode(bitmap.header.colorMode);
 
     RootView::GetInstance()->SaveDrawContext();