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 3703f163d2370292912d969395eccf372284db73..bedfaf0ebfefc5dcca530b8aaab4a829017f3fb9 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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@@ -290,6 +290,10 @@ const 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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@@ -341,6 +345,7 @@ 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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@@ -942,6 +947,10 @@ bool HWNDMessageHandler::HasChildRenderingWindow() {
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hwnd());
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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 925996e356994bf27939565beb9663c4416de1bc..8c2b5fc09da64a4766c1918eee34d4cfe651958d 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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@@ -183,6 +183,8 @@ class VIEWS_EXPORT HWNDMessageHandler : public gfx::WindowImpl,
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typedef std::set<DWORD> TouchIDs;
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enum class DwmFrameState { OFF, ON };
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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 a3c4e34bd26891e1bb98bc47038700da7e5a6b94..a919147ef1d46fe562ac74cdf515ae2d3ff8e2c4 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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