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39
40 #include "qshapedpixmapdndwindow_p.h"
41
42 #include "qplatformwindow.h"
43
44 #include <QtGui/QPainter>
45 #include <QtGui/QCursor>
46 #include <QtGui/QGuiApplication>
47 #include <QtGui/QPalette>
48 #include <QtGui/QBitmap>
49
50 QT_BEGIN_NAMESPACE
51
QShapedPixmapWindow(QScreen * screen)52 QShapedPixmapWindow::QShapedPixmapWindow(QScreen *screen)
53 : m_useCompositing(true)
54 {
55 setScreen(screen);
56 QSurfaceFormat format;
57 format.setAlphaBufferSize(8);
58 setFormat(format);
59 setFlags(Qt::ToolTip | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint
60 | Qt::WindowTransparentForInput | Qt::WindowDoesNotAcceptFocus);
61 }
62
~QShapedPixmapWindow()63 QShapedPixmapWindow::~QShapedPixmapWindow()
64 {
65 }
66
setPixmap(const QPixmap & pixmap)67 void QShapedPixmapWindow::setPixmap(const QPixmap &pixmap)
68 {
69 m_pixmap = pixmap;
70 if (!m_useCompositing) {
71 const QBitmap mask = m_pixmap.mask();
72 if (!mask.isNull()) {
73 if (!handle())
74 create();
75 if (auto platformWindow = handle()) {
76 const auto pixmapDpr = m_pixmap.devicePixelRatio();
77 const auto winDpr = devicePixelRatio();
78 const auto maskSize = (QSizeF(m_pixmap.size()) * winDpr / pixmapDpr).toSize();
79 platformWindow->setMask(QBitmap(mask.scaled(maskSize)));
80 }
81 }
82 }
83 }
84
setHotspot(const QPoint & hotspot)85 void QShapedPixmapWindow::setHotspot(const QPoint &hotspot)
86 {
87 m_hotSpot = hotspot;
88 }
89
paintEvent(QPaintEvent *)90 void QShapedPixmapWindow::paintEvent(QPaintEvent *)
91 {
92 if (!m_pixmap.isNull()) {
93 const QRect rect(QPoint(0, 0), size());
94 QPainter painter(this);
95 if (m_useCompositing)
96 painter.setCompositionMode(QPainter::CompositionMode_Source);
97 else
98 painter.fillRect(rect, QGuiApplication::palette().base());
99 painter.drawPixmap(rect, m_pixmap);
100 }
101 }
102
updateGeometry(const QPoint & pos)103 void QShapedPixmapWindow::updateGeometry(const QPoint &pos)
104 {
105 QSize size(1, 1);
106 if (!m_pixmap.isNull()) {
107 size = qFuzzyCompare(m_pixmap.devicePixelRatio(), qreal(1.0))
108 ? m_pixmap.size()
109 : (QSizeF(m_pixmap.size()) / m_pixmap.devicePixelRatio()).toSize();
110 }
111 setGeometry(QRect(pos - m_hotSpot, size));
112 }
113
114 QT_END_NAMESPACE
115