76 lines
3.5 KiB
Diff
76 lines
3.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Heilig Benedek <benecene@gmail.com>
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Date: Thu, 20 Sep 2018 17:47:54 -0700
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Subject: disable-redraw-lock.patch
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Chromium uses a custom window titlebar implementation on Windows when DWM
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is disabled (Windows 7 and earlier, non Aero theme). The native titlebar
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sometimes painted over this custom titlebar, so a workaround was put in
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place to lock redraws in reaction to certain events if DWM is disabled,
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since the code assumes that in that case, the custom titlebar is painted.
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Electron forces the use of the native titlebar, which the workaround doesn't
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take into account, and still locks redraws, causing weird repainting issues
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in electron (and other applications). This patch provides a way to disable
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the redraw locking mechanism, which fixes these issues. The electron issue
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can be found at https://github.com/electron/electron/issues/1821
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diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
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index 4cfdfcc93b4da0497271fd31e01db8485b2ec7b2..e7be846616e58631ed2a89530d02930d64336b70 100644
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--- a/ui/views/win/hwnd_message_handler.cc
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+++ b/ui/views/win/hwnd_message_handler.cc
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@@ -306,6 +306,10 @@ constexpr int kSynthesizedMouseMessagesTimeDifference = 500;
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} // namespace
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+bool HWNDMessageHandlerDelegate::HasNativeFrame() const {
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+ return false;
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+}
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+
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// A scoping class that prevents a window from being able to redraw in response
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// to invalidations that may occur within it for the lifetime of the object.
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//
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@@ -357,6 +361,7 @@ class HWNDMessageHandler::ScopedRedrawLock {
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cancel_unlock_(false),
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should_lock_(owner_->IsVisible() && !owner->HasChildRenderingWindow() &&
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::IsWindow(hwnd_) &&
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+ !owner_->HasNativeFrame() &&
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(!(GetWindowLong(hwnd_, GWL_STYLE) & WS_CAPTION) ||
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!ui::win::IsAeroGlassEnabled())) {
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if (should_lock_)
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@@ -970,6 +975,10 @@ HWNDMessageHandler::RegisterUnadjustedMouseEvent() {
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return scoped_enable;
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}
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+bool HWNDMessageHandler::HasNativeFrame() {
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+ return delegate_->HasNativeFrame();
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+}
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+
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////////////////////////////////////////////////////////////////////////////////
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// HWNDMessageHandler, gfx::WindowImpl overrides:
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diff --git a/ui/views/win/hwnd_message_handler.h b/ui/views/win/hwnd_message_handler.h
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index 7118ff56f0dd1c6291e4095ce7f3d8fc723f0398..5dbaab15ee1667ed1caf0b746b8e31d1b12a7b52 100644
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--- a/ui/views/win/hwnd_message_handler.h
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+++ b/ui/views/win/hwnd_message_handler.h
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@@ -203,6 +203,8 @@ class VIEWS_EXPORT HWNDMessageHandler : public gfx::WindowImpl,
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using TouchIDs = std::set<DWORD>;
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enum class DwmFrameState { kOff, kOn };
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+ bool HasNativeFrame();
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+
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// Overridden from WindowImpl:
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HICON GetDefaultWindowIcon() const override;
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HICON GetSmallWindowIcon() const override;
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diff --git a/ui/views/win/hwnd_message_handler_delegate.h b/ui/views/win/hwnd_message_handler_delegate.h
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index 98efa2b7c4033c9ce8c73f7201e68e85baf05bba..4f0897ecc675d3e366ec07df28e09698c6b6e4cf 100644
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--- a/ui/views/win/hwnd_message_handler_delegate.h
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+++ b/ui/views/win/hwnd_message_handler_delegate.h
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@@ -46,6 +46,8 @@ class VIEWS_EXPORT HWNDMessageHandlerDelegate {
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// True if the widget associated with this window has a non-client view.
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virtual bool HasNonClientView() const = 0;
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+ virtual bool HasNativeFrame() const;
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+
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// Returns who we want to be drawing the frame. Either the system (Windows)
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// will handle it or Chrome will custom draw it.
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virtual FrameMode GetFrameMode() const = 0;
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