sola/qwindowkit.git

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			#ifndef QWKWINDOWSEXTRA_P_H
			#define QWKWINDOWSEXTRA_P_H

			//
			// W A R N I N G !!!
			// -----------------
			//
			// This file is not part of the QWindowKit API. It is used purely as an
			// implementation detail. This header file may change from version to
			// version without notice, or may even be removed.
			//

			#include <shellscalingapi.h>
			#include <dwmapi.h>
			#include <timeapi.h>

			#include <QWKCore/qwindowkit_windows.h>

			#include <QtCore/private/qsystemlibrary_p.h>
			#include <QtCore/private/qwinregistry_p.h>

			#include <QtGui/QStyleHints>
			#include <QtGui/QPalette>

			// Don't include this header in any header files.

			namespace QWK {

			enum _DWMWINDOWATTRIBUTE {
			// [set] BOOL, Allows the use of host backdrop brushes for the window.
			_DWMWA_USE_HOSTBACKDROPBRUSH = 17,

			// Undocumented, the same with DWMWA_USE_IMMERSIVE_DARK_MODE, but available on systems
			// before Win10 20H1.
			_DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1 = 19,

			// [set] BOOL, Allows a window to either use the accent color, or dark, according to the
			// user Color Mode preferences.
			_DWMWA_USE_IMMERSIVE_DARK_MODE = 20,

			// [set] WINDOW_CORNER_PREFERENCE, Controls the policy that rounds top-level window corners
			_DWMWA_WINDOW_CORNER_PREFERENCE = 33,

			// [get] UINT, width of the visible border around a thick frame window
			_DWMWA_VISIBLE_FRAME_BORDER_THICKNESS = 37,

			// [get, set] SYSTEMBACKDROP_TYPE, Controls the system-drawn backdrop material of a window,
			// including behind the non-client area.
			_DWMWA_SYSTEMBACKDROP_TYPE = 38,

			// Undocumented, use this value to enable Mica material on Win11 21H2. You should use
			// DWMWA_SYSTEMBACKDROP_TYPE instead on Win11 22H2 and newer.
			_DWMWA_MICA_EFFECT = 1029
			};

			// Types used with DWMWA_SYSTEMBACKDROP_TYPE
			enum _DWM_SYSTEMBACKDROP_TYPE {
			_DWMSBT_AUTO, // [Default] Let DWM automatically decide the system-drawn backdrop for this
			// window.
			_DWMSBT_NONE, // [Disable] Do not draw any system backdrop.
			_DWMSBT_MAINWINDOW, // [Mica] Draw the backdrop material effect corresponding to a
			// long-lived window.
			_DWMSBT_TRANSIENTWINDOW, // [Acrylic] Draw the backdrop material effect corresponding to a
			// transient window.
			_DWMSBT_TABBEDWINDOW, // [Mica Alt] Draw the backdrop material effect corresponding to a
			// window with a tabbed title bar.
			};

			enum WINDOWCOMPOSITIONATTRIB {
			WCA_UNDEFINED = 0,
			WCA_NCRENDERING_ENABLED = 1,
			WCA_NCRENDERING_POLICY = 2,
			WCA_TRANSITIONS_FORCEDISABLED = 3,
			WCA_ALLOW_NCPAINT = 4,
			WCA_CAPTION_BUTTON_BOUNDS = 5,
			WCA_NONCLIENT_RTL_LAYOUT = 6,
			WCA_FORCE_ICONIC_REPRESENTATION = 7,
			WCA_EXTENDED_FRAME_BOUNDS = 8,
			WCA_HAS_ICONIC_BITMAP = 9,
			WCA_THEME_ATTRIBUTES = 10,
			WCA_NCRENDERING_EXILED = 11,
			WCA_NCADORNMENTINFO = 12,
			WCA_EXCLUDED_FROM_LIVEPREVIEW = 13,
			WCA_VIDEO_OVERLAY_ACTIVE = 14,
			WCA_FORCE_ACTIVEWINDOW_APPEARANCE = 15,
			WCA_DISALLOW_PEEK = 16,
			WCA_CLOAK = 17,
			WCA_CLOAKED = 18,
			WCA_ACCENT_POLICY = 19,
			WCA_FREEZE_REPRESENTATION = 20,
			WCA_EVER_UNCLOAKED = 21,
			WCA_VISUAL_OWNER = 22,
			WCA_HOLOGRAPHIC = 23,
			WCA_EXCLUDED_FROM_DDA = 24,
			WCA_PASSIVEUPDATEMODE = 25,
			WCA_USEDARKMODECOLORS = 26,
			WCA_CORNER_STYLE = 27,
			WCA_PART_COLOR = 28,
			WCA_DISABLE_MOVESIZE_FEEDBACK = 29,
			WCA_LAST = 30
			};

			enum ACCENT_STATE {
			ACCENT_DISABLED = 0,
			ACCENT_ENABLE_GRADIENT = 1,
			ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
			ACCENT_ENABLE_BLURBEHIND = 3, // Traditional DWM blur
			ACCENT_ENABLE_ACRYLICBLURBEHIND = 4, // RS4 1803
			ACCENT_ENABLE_HOST_BACKDROP = 5, // RS5 1809
			ACCENT_INVALID_STATE = 6 // Using this value will remove the window background
			};

			enum ACCENT_FLAG {
			ACCENT_NONE = 0,
			ACCENT_ENABLE_ACRYLIC = 1,
			ACCENT_ENABLE_ACRYLIC_WITH_LUMINOSITY = 482
			};

			struct ACCENT_POLICY {
			DWORD dwAccentState;
			DWORD dwAccentFlags;
			DWORD dwGradientColor; // #AABBGGRR
			DWORD dwAnimationId;
			};
			using PACCENT_POLICY = ACCENT_POLICY *;

			struct WINDOWCOMPOSITIONATTRIBDATA {
			WINDOWCOMPOSITIONATTRIB Attrib;
			PVOID pvData;
			SIZE_T cbData;
			};
			using PWINDOWCOMPOSITIONATTRIBDATA = WINDOWCOMPOSITIONATTRIBDATA *;

			using SetWindowCompositionAttributePtr = BOOL(WINAPI *)(HWND, PWINDOWCOMPOSITIONATTRIBDATA);

			namespace {

			struct DynamicApis {
			static const DynamicApis &instance() {
			static const DynamicApis inst{};
			return inst;
			}

			#define DYNAMIC_API_DECLARE(NAME) decltype(&::NAME) p##NAME = nullptr

			DYNAMIC_API_DECLARE(DwmFlush);
			DYNAMIC_API_DECLARE(DwmIsCompositionEnabled);
			DYNAMIC_API_DECLARE(DwmGetCompositionTimingInfo);
			DYNAMIC_API_DECLARE(DwmGetWindowAttribute);
			DYNAMIC_API_DECLARE(DwmSetWindowAttribute);
			DYNAMIC_API_DECLARE(DwmExtendFrameIntoClientArea);
			DYNAMIC_API_DECLARE(DwmEnableBlurBehindWindow);
			DYNAMIC_API_DECLARE(GetDpiForWindow);
			DYNAMIC_API_DECLARE(GetSystemMetricsForDpi);
			DYNAMIC_API_DECLARE(GetDpiForMonitor);
			DYNAMIC_API_DECLARE(timeGetDevCaps);
			DYNAMIC_API_DECLARE(timeBeginPeriod);
			DYNAMIC_API_DECLARE(timeEndPeriod);

			#undef DYNAMIC_API_DECLARE

			SetWindowCompositionAttributePtr pSetWindowCompositionAttribute = nullptr;

			private:
			DynamicApis() {
			#define DYNAMIC_API_RESOLVE(DLL, NAME) \
			p##NAME = reinterpret_cast<decltype(p##NAME)>(DLL.resolve(#NAME))

			QSystemLibrary user32(QStringLiteral("user32"));
			DYNAMIC_API_RESOLVE(user32, GetDpiForWindow);
			DYNAMIC_API_RESOLVE(user32, GetSystemMetricsForDpi);
			DYNAMIC_API_RESOLVE(user32, SetWindowCompositionAttribute);

			QSystemLibrary shcore(QStringLiteral("shcore"));
			DYNAMIC_API_RESOLVE(shcore, GetDpiForMonitor);

			QSystemLibrary dwmapi(QStringLiteral("dwmapi"));
			DYNAMIC_API_RESOLVE(dwmapi, DwmFlush);
			DYNAMIC_API_RESOLVE(dwmapi, DwmIsCompositionEnabled);
			DYNAMIC_API_RESOLVE(dwmapi, DwmGetCompositionTimingInfo);
			DYNAMIC_API_RESOLVE(dwmapi, DwmGetWindowAttribute);
			DYNAMIC_API_RESOLVE(dwmapi, DwmSetWindowAttribute);
			DYNAMIC_API_RESOLVE(dwmapi, DwmExtendFrameIntoClientArea);
			DYNAMIC_API_RESOLVE(dwmapi, DwmEnableBlurBehindWindow);

			QSystemLibrary winmm(QStringLiteral("winmm"));
			DYNAMIC_API_RESOLVE(winmm, timeGetDevCaps);
			DYNAMIC_API_RESOLVE(winmm, timeBeginPeriod);
			DYNAMIC_API_RESOLVE(winmm, timeEndPeriod);

			#undef DYNAMIC_API_RESOLVE
			}

			~DynamicApis() = default;

			Q_DISABLE_COPY_MOVE(DynamicApis)
			};

			}

			static inline constexpr bool operator==(const POINT &lhs, const POINT &rhs) noexcept {
			return ((lhs.x == rhs.x) && (lhs.y == rhs.y));
			}

			static inline constexpr bool operator!=(const POINT &lhs, const POINT &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr bool operator==(const SIZE &lhs, const SIZE &rhs) noexcept {
			return ((lhs.cx == rhs.cx) && (lhs.cy == rhs.cy));
			}

			static inline constexpr bool operator!=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr bool operator>(const SIZE &lhs, const SIZE &rhs) noexcept {
			return ((lhs.cx * lhs.cy) > (rhs.cx * rhs.cy));
			}

			static inline constexpr bool operator>=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator>(lhs, rhs) \|\| operator==(lhs, rhs));
			}

			static inline constexpr bool operator<(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator!=(lhs, rhs) && !operator>(lhs, rhs));
			}

			static inline constexpr bool operator<=(const SIZE &lhs, const SIZE &rhs) noexcept {
			return (operator<(lhs, rhs) \|\| operator==(lhs, rhs));
			}

			static inline constexpr bool operator==(const RECT &lhs, const RECT &rhs) noexcept {
			return ((lhs.left == rhs.left) && (lhs.top == rhs.top) && (lhs.right == rhs.right) &&
			(lhs.bottom == rhs.bottom));
			}

			static inline constexpr bool operator!=(const RECT &lhs, const RECT &rhs) noexcept {
			return !operator==(lhs, rhs);
			}

			static inline constexpr QPoint point2qpoint(const POINT &point) {
			return QPoint{int(point.x), int(point.y)};
			}

			static inline constexpr POINT qpoint2point(const QPoint &point) {
			return POINT{LONG(point.x()), LONG(point.y())};
			}

			static inline constexpr QSize size2qsize(const SIZE &size) {
			return QSize{int(size.cx), int(size.cy)};
			}

			static inline constexpr SIZE qsize2size(const QSize &size) {
			return SIZE{LONG(size.width()), LONG(size.height())};
			}

			static inline constexpr QRect rect2qrect(const RECT &rect) {
			return QRect{
			QPoint{int(rect.left), int(rect.top) },
			QSize{int(RECT_WIDTH(rect)), int(RECT_HEIGHT(rect))}
			};
			}

			static inline constexpr RECT qrect2rect(const QRect &qrect) {
			return RECT{LONG(qrect.left()), LONG(qrect.top()), LONG(qrect.right()),
			LONG(qrect.bottom())};
			}

			static inline /constexpr/ QString hwnd2str(const WId windowId) {
			// NULL handle is allowed here.
			return QLatin1String("0x") +
			QString::number(windowId, 16).toUpper().rightJustified(8, u'0');
			}

			static inline /constexpr/ QString hwnd2str(HWND hwnd) {
			// NULL handle is allowed here.
			return hwnd2str(reinterpret_cast<WId>(hwnd));
			}

			static inline bool isWin8OrGreater() {
			static const bool result = IsWindows8OrGreater_Real();
			return result;
			}

			static inline bool isWin8Point1OrGreater() {
			static const bool result = IsWindows8Point1OrGreater_Real();
			return result;
			}

			static inline bool isWin10OrGreater() {
			static const bool result = IsWindows10OrGreater_Real();
			return result;
			}

			static inline bool isWin11OrGreater() {
			static const bool result = IsWindows11OrGreater_Real();
			return result;
			}

			static inline bool isWin1122H2OrGreater() {
			static const bool result = IsWindows1122H2OrGreater_Real();
			return result;
			}

			static inline bool isDwmCompositionEnabled() {
			if (isWin8OrGreater()) {
			return true;
			}
			const DynamicApis &apis = DynamicApis::instance();
			if (!apis.pDwmIsCompositionEnabled) {
			return false;
			}
			BOOL enabled = FALSE;
			return SUCCEEDED(apis.pDwmIsCompositionEnabled(&enabled)) && enabled;
			}

			static inline bool isWindowFrameBorderColorized() {
			const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
			if (!registry.isValid()) {
			return false;
			}
			const auto value = registry.dwordValue(L"ColorPrevalence");
			if (!value.second) {
			return false;
			}
			return value.first;
			}

			static inline bool isDarkThemeActive() {
			#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
			return QGuiApplication::styleHints()->colorScheme() == Qt::ColorScheme::Dark;
			#else
			const QWinRegistryKey registry(
			HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\CurrentVersion\Themes\Personalize)");
			if (!registry.isValid()) {
			return false;
			}
			const auto value = registry.dwordValue(L"AppsUseLightTheme");
			if (!value.second) {
			return false;
			}
			return !value.first;
			#endif
			}

			static inline bool isDarkWindowFrameEnabled(HWND hwnd) {
			BOOL enabled = FALSE;
			const DynamicApis &apis = DynamicApis::instance();
			if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd, _DWMWA_USE_IMMERSIVE_DARK_MODE, &enabled,
			sizeof(enabled)))) {
			return enabled;
			} else if (SUCCEEDED(apis.pDwmGetWindowAttribute(hwnd,
			_DWMWA_USE_IMMERSIVE_DARK_MODE_BEFORE_20H1,
			&enabled, sizeof(enabled)))) {
			return enabled;
			} else {
			return false;
			}
			}

			static inline QColor getAccentColor() {
			#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
			return QGuiApplication::palette().color(QPalette::Accent);
			#else
			const QWinRegistryKey registry(HKEY_CURRENT_USER, LR"(Software\Microsoft\Windows\DWM)");
			if (!registry.isValid()) {
			return {};
			}
			const auto value = registry.dwordValue(L"AccentColor");
			if (!value.second) {
			return {};
			}
			// The retrieved value is in the #AABBGGRR format, we need to
			// convert it to the #AARRGGBB format which Qt expects.
			const QColor abgr = QColor::fromRgba(value.first);
			if (!abgr.isValid()) {
			return {};
			}
			return QColor::fromRgb(abgr.blue(), abgr.green(), abgr.red(), abgr.alpha());
			#endif
			}

			}

			#endif // QWKWINDOWSEXTRA_P_H