85 lines
2.1 KiB
C++
85 lines
2.1 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <QtGlobal>
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#include <windows.h>
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#include <dwmapi.h>
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#include <QWindow>
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#include <QRegion>
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#include "winutils.h"
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namespace Utilities {
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HRGN qt_RectToHRGN(const QRect &rc);
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HRGN qt_RectToHRGN(const QRect &rc) {
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return CreateRectRgn(rc.left(), rc.top(), rc.right() + 1, rc.bottom() + 1);
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}
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HRGN toHRGN(const QRegion ®ion);
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HRGN toHRGN(const QRegion ®ion) {
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# if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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return region.toHRGN();
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# else
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const int rect_count = region.rectCount();
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if (rect_count == 0) {
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return nullptr;
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}
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HRGN resultRgn = nullptr;
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QRegion::const_iterator rects = region.begin();
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resultRgn = qt_RectToHRGN(rects[0]);
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for (int i = 1; i < rect_count; ++i) {
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HRGN tmpRgn = qt_RectToHRGN(rects[i]);
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const int res = CombineRgn(resultRgn, resultRgn, tmpRgn, RGN_OR);
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if (res == ERROR) qWarning("Error combining HRGNs.");
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DeleteObject(tmpRgn);
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}
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return resultRgn;
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# endif // Qt 6
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}
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void enableBlurBehindWindow(QWindow *window, const QRegion ®ion) {
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DWM_BLURBEHIND dwmbb = { 0, 0, nullptr, 0 };
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dwmbb.dwFlags = DWM_BB_ENABLE;
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dwmbb.fEnable = TRUE;
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HRGN rgn = nullptr;
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if (!region.isNull()) {
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rgn = toHRGN(region);
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if (rgn) {
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dwmbb.hRgnBlur = rgn;
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dwmbb.dwFlags |= DWM_BB_BLURREGION;
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}
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}
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DwmEnableBlurBehindWindow(reinterpret_cast<HWND>(window->winId()), &dwmbb);
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if (rgn) {
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DeleteObject(rgn);
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}
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}
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} // namespace Utilities
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