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fix: adjust window size in NCCALCSIZE instead of adding insets (#19883)

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Heilig Benedek 2019-08-26 03:03:57 +02:00 • committed by Cheng Zhao
parent 080fdb3817
commit f6c523db13
3 changed files with 28 additions and 37 deletions
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42
shell/browser/native_window_views_win.cc
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@ -239,6 +239,15 @@ int GetAppbarAutohideEdges(HWND hwnd) {
return edges;
}
void TriggerNCCalcSize(HWND hwnd) {
RECT rcClient;
::GetWindowRect(hwnd, &rcClient);
::SetWindowPos(hwnd, NULL, rcClient.left, rcClient.top,
rcClient.right - rcClient.left, rcClient.bottom - rcClient.top,
SWP_FRAMECHANGED);
}
} // namespace
std::set<NativeWindowViews*> NativeWindowViews::forwarding_windows_;
@ -369,8 +378,12 @@ bool NativeWindowViews::PreHandleMSG(UINT message,
// https://blogs.msdn.microsoft.com/wpfsdk/2008/09/08/custom-window-chrome-in-wpf/
DefWindowProcW(GetAcceleratedWidget(), WM_NCCALCSIZE, w_param, l_param);
params->rgrc[0] = PROPOSED;
params->rgrc[1] = BEFORE;
if (last_window_state_ == ui::SHOW_STATE_MAXIMIZED) {
params->rgrc[0].top = 0;
} else {
params->rgrc[0] = PROPOSED;
params->rgrc[1] = BEFORE;
}
return true;
} else {
@ -453,26 +466,15 @@ void NativeWindowViews::HandleSizeEvent(WPARAM w_param, LPARAM l_param) {
// window state and notify the user accordingly.
switch (w_param) {
case SIZE_MAXIMIZED: {
// Frameless maximized windows are size compensated by Windows for a
// border that's not actually there, so we must conter-compensate.
// https://blogs.msdn.microsoft.com/wpfsdk/2008/09/08/custom-window-chrome-in-wpf/
if (!has_frame()) {
float scale_factor = display::win::ScreenWin::GetScaleFactorForHWND(
GetAcceleratedWidget());
int border =
GetSystemMetrics(SM_CXFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
if (!thick_frame_) {
border -= GetSystemMetrics(SM_CXBORDER);
}
root_view_->SetInsets(gfx::Insets(border).Scale(1.0f / scale_factor));
}
last_window_state_ = ui::SHOW_STATE_MAXIMIZED;
if (consecutive_moves_) {
last_normal_bounds_ = last_normal_bounds_before_move_;
}
if (!has_frame()) {
TriggerNCCalcSize(GetAcceleratedWidget());
}
NotifyWindowMaximize();
break;
}
@ -497,8 +499,12 @@ void NativeWindowViews::HandleSizeEvent(WPARAM w_param, LPARAM l_param) {
switch (last_window_state_) {
case ui::SHOW_STATE_MAXIMIZED:
last_window_state_ = ui::SHOW_STATE_NORMAL;
root_view_->SetInsets(gfx::Insets(0));
NotifyWindowUnmaximize();
if (!has_frame()) {
TriggerNCCalcSize(GetAcceleratedWidget());
}
break;
case ui::SHOW_STATE_MINIMIZED:
if (IsFullscreen()) {