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Diffstat (limited to 'src/plugins/platforms/cocoa/qcocoascreen.mm')
| -rw-r--r-- | src/plugins/platforms/cocoa/qcocoascreen.mm | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qcocoascreen.mm b/src/plugins/platforms/cocoa/qcocoascreen.mm new file mode 100644 index 0000000000..f523873bde --- /dev/null +++ b/src/plugins/platforms/cocoa/qcocoascreen.mm @@ -0,0 +1,296 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qcocoascreen.h" + +#include "qcocoawindow.h" +#include "qcocoahelpers.h" + +#include <QtCore/qcoreapplication.h> +#include <QtGui/private/qcoregraphics_p.h> + +#include <IOKit/graphics/IOGraphicsLib.h> + +QT_BEGIN_NAMESPACE + +class QCoreTextFontEngine; +class QFontEngineFT; + +QCocoaScreen::QCocoaScreen(int screenIndex) + : QPlatformScreen(), m_screenIndex(screenIndex), m_refreshRate(60.0) +{ + updateGeometry(); + m_cursor = new QCocoaCursor; +} + +QCocoaScreen::~QCocoaScreen() +{ + delete m_cursor; +} + +NSScreen *QCocoaScreen::nativeScreen() const +{ + NSArray *screens = [NSScreen screens]; + + // Stale reference, screen configuration has changed + if (m_screenIndex < 0 || (NSUInteger)m_screenIndex >= [screens count]) + return nil; + + return [screens objectAtIndex:m_screenIndex]; +} + +/*! + Flips the Y coordinate of the point between quadrant I and IV. + + The native coordinate system on macOS uses quadrant I, with origin + in bottom left, and Qt uses quadrant IV, with origin in top left. + + By flippig the Y coordinate, we can map the position between the + two coordinate systems. +*/ +QPointF QCocoaScreen::flipCoordinate(const QPointF &pos) const +{ + return QPointF(pos.x(), m_geometry.height() - pos.y()); +} + +/*! + Flips the Y coordinate of the rectangle between quadrant I and IV. + + The native coordinate system on macOS uses quadrant I, with origin + in bottom left, and Qt uses quadrant IV, with origin in top left. + + By flippig the Y coordinate, we can map the rectangle between the + two coordinate systems. +*/ +QRectF QCocoaScreen::flipCoordinate(const QRectF &rect) const +{ + return QRectF(flipCoordinate(rect.topLeft() + QPoint(0, rect.height())), rect.size()); +} + +void QCocoaScreen::updateGeometry() +{ + NSScreen *nsScreen = nativeScreen(); + if (!nsScreen) + return; + + // At this point the geometry is in native coordinates, but the size + // is correct, which we take advantage of next when we map the native + // coordinates to the Qt coordinate system. + m_geometry = QRectF::fromCGRect(NSRectToCGRect(nsScreen.frame)).toRect(); + m_availableGeometry = QRectF::fromCGRect(NSRectToCGRect(nsScreen.visibleFrame)).toRect(); + + // The reference screen for the geometry is always the primary screen, but since + // we may be in the process of creating and registering the primary screen, we + // must special-case that and assign it direcly. + QCocoaScreen *primaryScreen = (nsScreen == [[NSScreen screens] firstObject]) ? + this : QCocoaScreen::primaryScreen(); + + m_geometry = primaryScreen->mapFromNative(m_geometry).toRect(); + m_availableGeometry = primaryScreen->mapFromNative(m_availableGeometry).toRect(); + + m_format = QImage::Format_RGB32; + m_depth = NSBitsPerPixelFromDepth([nsScreen depth]); + + NSDictionary *devDesc = [nsScreen deviceDescription]; + CGDirectDisplayID dpy = [[devDesc objectForKey:@"NSScreenNumber"] unsignedIntValue]; + CGSize size = CGDisplayScreenSize(dpy); + m_physicalSize = QSizeF(size.width, size.height); + m_logicalDpi.first = 72; + m_logicalDpi.second = 72; + CGDisplayModeRef displayMode = CGDisplayCopyDisplayMode(dpy); + float refresh = CGDisplayModeGetRefreshRate(displayMode); + CGDisplayModeRelease(displayMode); + if (refresh > 0) + m_refreshRate = refresh; + + // Get m_name (brand/model of the monitor) + NSDictionary *deviceInfo = (NSDictionary *)IODisplayCreateInfoDictionary(CGDisplayIOServicePort(dpy), kIODisplayOnlyPreferredName); + NSDictionary *localizedNames = [deviceInfo objectForKey:[NSString stringWithUTF8String:kDisplayProductName]]; + if ([localizedNames count] > 0) + m_name = QString::fromUtf8([[localizedNames objectForKey:[[localizedNames allKeys] objectAtIndex:0]] UTF8String]); + [deviceInfo release]; + + QWindowSystemInterface::handleScreenGeometryChange(screen(), geometry(), availableGeometry()); + QWindowSystemInterface::handleScreenLogicalDotsPerInchChange(screen(), m_logicalDpi.first, m_logicalDpi.second); + QWindowSystemInterface::handleScreenRefreshRateChange(screen(), m_refreshRate); +} + +qreal QCocoaScreen::devicePixelRatio() const +{ + QMacAutoReleasePool pool; + NSScreen *nsScreen = nativeScreen(); + return qreal(nsScreen ? [nsScreen backingScaleFactor] : 1.0); +} + +QPlatformScreen::SubpixelAntialiasingType QCocoaScreen::subpixelAntialiasingTypeHint() const +{ + QPlatformScreen::SubpixelAntialiasingType type = QPlatformScreen::subpixelAntialiasingTypeHint(); + if (type == QPlatformScreen::Subpixel_None) { + // Every OSX machine has RGB pixels unless a peculiar or rotated non-Apple screen is attached + type = QPlatformScreen::Subpixel_RGB; + } + return type; +} + +QWindow *QCocoaScreen::topLevelAt(const QPoint &point) const +{ + NSPoint screenPoint = qt_mac_flipPoint(point); + + // Search (hit test) for the top-level window. [NSWidow windowNumberAtPoint: + // belowWindowWithWindowNumber] may return windows that are not interesting + // to Qt. The search iterates until a suitable window or no window is found. + NSInteger topWindowNumber = 0; + QWindow *window = 0; + do { + // Get the top-most window, below any previously rejected window. + topWindowNumber = [NSWindow windowNumberAtPoint:screenPoint + belowWindowWithWindowNumber:topWindowNumber]; + + // Continue the search if the window does not belong to this process. + NSWindow *nsWindow = [NSApp windowWithWindowNumber:topWindowNumber]; + if (nsWindow == 0) + continue; + + // Continue the search if the window does not belong to Qt. + if (![nsWindow conformsToProtocol:@protocol(QNSWindowProtocol)]) + continue; + + id<QNSWindowProtocol> proto = static_cast<id<QNSWindowProtocol> >(nsWindow); + QCocoaWindow *cocoaWindow = proto.platformWindow; + if (!cocoaWindow) + continue; + window = cocoaWindow->window(); + + // Continue the search if the window is not a top-level window. + if (!window->isTopLevel()) + continue; + + // Stop searching. The current window is the correct window. + break; + } while (topWindowNumber > 0); + + return window; +} + +QPixmap QCocoaScreen::grabWindow(WId window, int x, int y, int width, int height) const +{ + // TODO window should be handled + Q_UNUSED(window) + + const int maxDisplays = 128; // 128 displays should be enough for everyone. + CGDirectDisplayID displays[maxDisplays]; + CGDisplayCount displayCount; + CGRect cgRect; + + if (width < 0 || height < 0) { + // get all displays + cgRect = CGRectInfinite; + } else { + cgRect = CGRectMake(x, y, width, height); + } + const CGDisplayErr err = CGGetDisplaysWithRect(cgRect, maxDisplays, displays, &displayCount); + + if (err && displayCount == 0) + return QPixmap(); + + // calculate pixmap size + QSize windowSize(width, height); + if (width < 0 || height < 0) { + QRect windowRect; + for (uint i = 0; i < displayCount; ++i) { + const CGRect cgRect = CGDisplayBounds(displays[i]); + QRect qRect(cgRect.origin.x, cgRect.origin.y, cgRect.size.width, cgRect.size.height); + windowRect = windowRect.united(qRect); + } + if (width < 0) + windowSize.setWidth(windowRect.width()); + if (height < 0) + windowSize.setHeight(windowRect.height()); + } + + QPixmap windowPixmap(windowSize * devicePixelRatio()); + windowPixmap.fill(Qt::transparent); + + for (uint i = 0; i < displayCount; ++i) { + const CGRect bounds = CGDisplayBounds(displays[i]); + int w = (width < 0 ? bounds.size.width : width) * devicePixelRatio(); + int h = (height < 0 ? bounds.size.height : height) * devicePixelRatio(); + QRect displayRect = QRect(x, y, w, h); + displayRect = displayRect.translated(qRound(-bounds.origin.x), qRound(-bounds.origin.y)); + QCFType<CGImageRef> image = CGDisplayCreateImageForRect(displays[i], + CGRectMake(displayRect.x(), displayRect.y(), displayRect.width(), displayRect.height())); + QPixmap pix(w, h); + pix.fill(Qt::transparent); + CGRect rect = CGRectMake(0, 0, w, h); + QMacCGContext ctx(&pix); + qt_mac_drawCGImage(ctx, &rect, image); + + QPainter painter(&windowPixmap); + painter.drawPixmap(0, 0, pix); + } + return windowPixmap; +} + +/*! + The screen used as a reference for global window geometry +*/ +QCocoaScreen *QCocoaScreen::primaryScreen() +{ + return static_cast<QCocoaScreen *>(QGuiApplication::primaryScreen()->handle()); +} + +#ifndef QT_NO_DEBUG_STREAM +QDebug operator<<(QDebug debug, const QCocoaScreen *screen) +{ + QDebugStateSaver saver(debug); + debug.nospace(); + debug << "QCocoaScreen(" << (const void *)screen; + if (screen) { + debug << ", index=" << screen->m_screenIndex; + debug << ", native=" << screen->nativeScreen(); + debug << ", geometry=" << screen->geometry(); + debug << ", dpr=" << screen->devicePixelRatio(); + debug << ", name=" << screen->name(); + } + debug << ')'; + return debug; +} +#endif // !QT_NO_DEBUG_STREAM + +QT_END_NAMESPACE |