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Make WindowHelper::updateMargins multi-screen DPI aware

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This commit is contained in:
Ilya Fedin 2023-08-12 04:04:12 +04:00 • committed by John Preston
parent e66ad9c80c
commit cbb9e0bbde
1 changed files with 26 additions and 2 deletions
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26
ui/platform/win/ui_window_win.cpp
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@ -48,6 +48,13 @@ int(__stdcall *GetSystemMetricsForDpi)(
_In_ int nIndex,
_In_ UINT dpi);
BOOL(__stdcall *AdjustWindowRectExForDpi)(
_Inout_ LPRECT lpRect,
_In_ DWORD dwStyle,
_In_ BOOL bMenu,
_In_ DWORD dwExStyle,
_In_ UINT dpi);
[[nodiscard]] bool GetDpiForWindowSupported() {
static const auto Result = [&] {
#define LOAD_SYMBOL(lib, name) base::Platform::LoadMethod(lib, #name, name)
@ -68,6 +75,16 @@ int(__stdcall *GetSystemMetricsForDpi)(
return Result;
}
[[nodiscard]] bool AdjustWindowRectExForDpiSupported() {
static const auto Result = [&] {
#define LOAD_SYMBOL(lib, name) base::Platform::LoadMethod(lib, #name, name)
const auto user32 = base::Platform::SafeLoadLibrary(L"User32.dll");
return LOAD_SYMBOL(user32, AdjustWindowRectExForDpi);
#undef LOAD_SYMBOL
}();
return Result;
}
[[nodiscard]] bool IsCompositionEnabled() {
auto result = BOOL(FALSE);
const auto success = (DwmIsCompositionEnabled(&result) == S_OK);
@ -416,7 +433,9 @@ void WindowHelper::init() {
}();
}, window()->lifetime());
_dpi.value() | rpl::start_with_next([=](uint dpi) {
updateMargins();
}, window()->lifetime());
if (!::Platform::IsWindows11OrGreater()) {
_shadow.emplace(window(), st::windowShadowFg->c);
@ -854,7 +873,12 @@ void WindowHelper::updateMargins() {
RECT r{};
const auto style = GetWindowLongPtr(_handle, GWL_STYLE);
const auto styleEx = GetWindowLongPtr(_handle, GWL_EXSTYLE);
AdjustWindowRectEx(&a, style, false, styleEx);
const auto dpi = _dpi.current();
if (AdjustWindowRectExForDpiSupported() && dpi) {
AdjustWindowRectExForDpi(&r, style, false, styleEx, dpi);
} else {
AdjustWindowRectEx(&r, style, false, styleEx);
}
auto margins = QMargins(r.left, r.top, -r.right, -r.bottom);
if (style & WS_MAXIMIZE) {
RECT w, m;