如何拍摄QMediaPlayer的屏幕截图? - PyQt

时间:2018-06-12 03:20:28

标签: python pyqt pyqt5 screenshot qmediaplayer

我在videoplayer.py中有一个视频播放器,我将其导入main.py并将其嵌入到窗口中。我想要做的是在点击btn时拍摄视频播放器当前视频帧的屏幕截图,而现在只拍摄没有视频的视频播放器的屏幕截图。

那么当点击btn时,代码如何在视频播放器中截取当前视频帧的屏幕截图?

main.py

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from videoplayer import Player
app = QApplication(sys.argv)
win = QWidget()
grid = QGridLayout(win)
grid.setContentsMargins(0,0,0,0)
player = Player(sys.argv[:1])
grid.addWidget(player)    

def shot():
    p = player.grab()
    p.save('TestImg.jpg', 'jpg')
    print("shot taken")

btn = QPushButton('take screenshot', clicked=shot)
grid.addWidget(btn)
win.show()
sys.exit(app.exec_())

videoplayer.py

from PyQt5.QtCore import (pyqtSignal, pyqtSlot, Q_ARG, QAbstractItemModel,
        QFileInfo, qFuzzyCompare, QMetaObject, QModelIndex, QObject, Qt,
        QThread, QTime, QUrl)
from PyQt5.QtGui import QColor, qGray, QImage, QPainter, QPalette
from PyQt5.QtMultimedia import (QAbstractVideoBuffer, QMediaContent,
        QMediaMetaData, QMediaPlayer, QMediaPlaylist, QVideoFrame, QVideoProbe)
from PyQt5.QtMultimediaWidgets import QVideoWidget
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtWidgets import *

from PyQt5.QtMultimedia import *
from PyQt5.QtMultimediaWidgets import *

from PyQt5.QtCore import * 

class VideoWidget(QVideoWidget):

    def __init__(self, parent=None):
        super(VideoWidget, self).__init__(parent)
        self.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Ignored)

        p = self.palette()
        p.setColor(QPalette.Window, Qt.black)
        self.setPalette(p)


        self.setAttribute(Qt.WA_OpaquePaintEvent)

    def keyPressEvent(self, event):
        if event.key() == Qt.Key_Escape and self.isFullScreen():
            self.setFullScreen(False)
            event.accept()
        elif event.key() == Qt.Key_Enter and event.modifiers() & Qt.Key_Alt:
            self.setFullScreen(not self.isFullScreen())
            event.accept()
        else:
            super(VideoWidget, self).keyPressEvent(event)

    def mouseDoubleClickEvent(self, event):
        self.setFullScreen(not self.isFullScreen())
        event.accept()


class PlaylistModel(QAbstractItemModel):

    Title, ColumnCount = range(2)

    def __init__(self, parent=None):
        super(PlaylistModel, self).__init__(parent)

        self.m_playlist = None

    def rowCount(self, parent=QModelIndex()):
        return self.m_playlist.mediaCount() if self.m_playlist is not None and not parent.isValid() else 0

    def columnCount(self, parent=QModelIndex()):
        return self.ColumnCount if not parent.isValid() else 0

    def index(self, row, column, parent=QModelIndex()):
        return self.createIndex(row, column) if self.m_playlist is not None and not parent.isValid() and row >= 0 and row < self.m_playlist.mediaCount() and column >= 0 and column < self.ColumnCount else QModelIndex()

    def parent(self, child):
        return QModelIndex()

    def data(self, index, role=Qt.DisplayRole):
        if index.isValid() and role == Qt.DisplayRole:
            if index.column() == self.Title:
                location = self.m_playlist.media(index.row()).canonicalUrl()
                return QFileInfo(location.path()).fileName()

            return self.m_data[index]

        return None

    def playlist(self):
        return self.m_playlist

    def setPlaylist(self, playlist):
        if self.m_playlist is not None:
            self.m_playlist.mediaAboutToBeInserted.disconnect(
                    self.beginInsertItems)
            self.m_playlist.mediaInserted.disconnect(self.endInsertItems)
            self.m_playlist.mediaAboutToBeRemoved.disconnect(
                    self.beginRemoveItems)
            self.m_playlist.mediaRemoved.disconnect(self.endRemoveItems)
            self.m_playlist.mediaChanged.disconnect(self.changeItems)

        self.beginResetModel()
        self.m_playlist = playlist

        if self.m_playlist is not None:
            self.m_playlist.mediaAboutToBeInserted.connect(
                    self.beginInsertItems)
            self.m_playlist.mediaInserted.connect(self.endInsertItems)
            self.m_playlist.mediaAboutToBeRemoved.connect(
                    self.beginRemoveItems)
            self.m_playlist.mediaRemoved.connect(self.endRemoveItems)
            self.m_playlist.mediaChanged.connect(self.changeItems)

        self.endResetModel()

    def beginInsertItems(self, start, end):
        self.beginInsertRows(QModelIndex(), start, end)

    def endInsertItems(self):
        self.endInsertRows()

    def beginRemoveItems(self, start, end):
        self.beginRemoveRows(QModelIndex(), start, end)

    def endRemoveItems(self):
        self.endRemoveRows()

    def changeItems(self, start, end):
        self.dataChanged.emit(self.index(start, 0),
                self.index(end, self.ColumnCount))


class PlayerControls(QWidget):

    play = pyqtSignal()
    pause = pyqtSignal()
    stop = pyqtSignal()
    next = pyqtSignal()
    previous = pyqtSignal()
    changeVolume = pyqtSignal(int)
    changeMuting = pyqtSignal(bool)
    changeRate = pyqtSignal(float)

    def __init__(self, parent=None):
        super(PlayerControls, self).__init__(parent)

        self.playerState = QMediaPlayer.StoppedState
        self.playerMuted = False

        self.playButton = QToolButton(clicked=self.playClicked)
        self.playButton.setShortcut('Space')
        self.playButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.playButton.setIcon(self.style().standardIcon(QStyle.SP_MediaPlay))

        self.stopButton = QToolButton(clicked=self.stop)
        self.stopButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.stopButton.setIcon(self.style().standardIcon(QStyle.SP_MediaStop))
        self.stopButton.setEnabled(False)

        self.nextButton = QToolButton(clicked=self.next)
        self.nextButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.nextButton.setIcon(
                self.style().standardIcon(QStyle.SP_MediaSkipForward))

        self.previousButton = QToolButton(clicked=self.previous)
        self.previousButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.previousButton.setIcon(
                self.style().standardIcon(QStyle.SP_MediaSkipBackward))

        self.muteButton = QToolButton(clicked=self.muteClicked)
        self.muteButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.muteButton.setIcon(
                self.style().standardIcon(QStyle.SP_MediaVolume))

        self.volumeSlider = QSlider(Qt.Horizontal,
                sliderMoved=self.changeVolume)
        self.volumeSlider.setRange(0, 100)

        self.rateBox = QComboBox(currentIndexChanged=self.updateRate)
        self.rateBox.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        font = QtGui.QFont('Calibri')
        self.rateBox.setFont(font)
        self.rateBox.addItem("0.5x", 0.5)
        self.rateBox.addItem("0.8x", 0.8)
        self.rateBox.addItem("1.0x", 1.0)
        self.rateBox.addItem("2.0x", 2.0)
        self.rateBox.setCurrentIndex(2)

        layout = QHBoxLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.addWidget(self.stopButton)
        layout.addWidget(self.previousButton)
        layout.addWidget(self.playButton)
        layout.addWidget(self.nextButton)
        layout.addWidget(self.muteButton)
        layout.addWidget(self.volumeSlider)
        layout.addWidget(self.rateBox)
        self.setLayout(layout)

    def state(self):
        return self.playerState

    def setState(self,state):
        if state != self.playerState:
            self.playerState = state

            if state == QMediaPlayer.StoppedState:
                self.stopButton.setEnabled(False)
                self.playButton.setIcon(
                        self.style().standardIcon(QStyle.SP_MediaPlay))
            elif state == QMediaPlayer.PlayingState:
                self.stopButton.setEnabled(True)
                self.playButton.setIcon(
                        self.style().standardIcon(QStyle.SP_MediaPause))
            elif state == QMediaPlayer.PausedState:
                self.stopButton.setEnabled(True)
                self.playButton.setIcon(
                        self.style().standardIcon(QStyle.SP_MediaPlay))

    def volume(self):
        return self.volumeSlider.value()

    def setVolume(self, volume):
        self.volumeSlider.setValue(volume)

    def isMuted(self):
        return self.playerMuted

    def setMuted(self, muted):
        if muted != self.playerMuted:
            self.playerMuted = muted

            self.muteButton.setIcon(
                    self.style().standardIcon(
                            QStyle.SP_MediaVolumeMuted if muted else QStyle.SP_MediaVolume))

    def playClicked(self):
        if self.playerState in (QMediaPlayer.StoppedState, QMediaPlayer.PausedState):
            self.play.emit()
        elif self.playerState == QMediaPlayer.PlayingState:
            self.pause.emit()

    def muteClicked(self):
        self.changeMuting.emit(not self.playerMuted)

    def playbackRate(self):
        return self.rateBox.itemData(self.rateBox.currentIndex())

    def setPlaybackRate(self, rate):
        for i in range(self.rateBox.count()):
            if qFuzzyCompare(rate, self.rateBox.itemData(i)):
                self.rateBox.setCurrentIndex(i)
                return

        self.rateBox.addItem("%dx" % rate, rate)
        self.rateBox.setCurrentIndex(self.rateBox.count() - 1)

    def updateRate(self):
        self.changeRate.emit(self.playbackRate())


class FrameProcessor(QObject):

    histogramReady = pyqtSignal(list)

    @pyqtSlot(QVideoFrame, int)
    def processFrame(self, frame, levels):
        histogram = [0.0] * levels

        if levels and frame.map(QAbstractVideoBuffer.ReadOnly):
            pixelFormat = frame.pixelFormat()

            if pixelFormat == QVideoFrame.Format_YUV420P or pixelFormat == QVideoFrame.Format_NV12:
                # Process YUV data.
                bits = frame.bits()
                for idx in range(frame.height() * frame.width()):
                    histogram[(bits[idx] * levels) >> 8] += 1.0
            else:
                imageFormat = QVideoFrame.imageFormatFromPixelFormat(pixelFormat)
                if imageFormat != QImage.Format_Invalid:
                    # Process RGB data.
                    image = QImage(frame.bits(), frame.width(), frame.height(), imageFormat)

                    for y in range(image.height()):
                        for x in range(image.width()):
                            pixel = image.pixel(x, y)
                            histogram[(qGray(pixel) * levels) >> 8] += 1.0

            # Find the maximum value.
            maxValue = 0.0
            for value in histogram:
                if value > maxValue:
                    maxValue = value

            # Normalise the values between 0 and 1.
            if maxValue > 0.0:
                for i in range(len(histogram)):
                    histogram[i] /= maxValue

            frame.unmap()

        self.histogramReady.emit(histogram)


class Player(QWidget):

    fullScreenChanged = pyqtSignal(bool)

    def __init__(self, playlist, parent=None):
        super(Player, self).__init__(parent)

        self.colorDialog = None
        self.trackInfo = ""
        self.statusInfo = ""
        self.duration = 0

        self.player = QMediaPlayer()
        self.playlist = QMediaPlaylist()
        self.player.setPlaylist(self.playlist)

        self.player.durationChanged.connect(self.durationChanged)
        self.player.positionChanged.connect(self.positionChanged)
        self.player.metaDataChanged.connect(self.metaDataChanged)
        self.playlist.currentIndexChanged.connect(self.playlistPositionChanged)
        self.player.mediaStatusChanged.connect(self.statusChanged)
        self.player.bufferStatusChanged.connect(self.bufferingProgress)
        self.player.videoAvailableChanged.connect(self.videoAvailableChanged)
        self.player.error.connect(self.displayErrorMessage)

        self.videoWidget = VideoWidget()
        self.videoWidget.setStyleSheet('background-color: black;')
        self.player.setVideoOutput(self.videoWidget)

        self.playlistModel = PlaylistModel()
        self.playlistModel.setPlaylist(self.playlist)

        self.playlistView = QListView()
        self.playlistView.setFixedSize(0, 890)
        self.playlistView.setFrameShape(QtWidgets.QFrame.Panel)
        self.playlistView.setFrameShadow(QtWidgets.QFrame.Sunken)
        self.playlistView.setLineWidth(6)
        self.playlistView.setMidLineWidth(3)
        self.playlistView.setStyleSheet('background-color: rgb(89, 89, 89); color: white;')
        self.playlistView.setModel(self.playlistModel)
        self.playlistView.setCurrentIndex(
                self.playlistModel.index(self.playlist.currentIndex(), 0))

        self.playlistView.activated.connect(self.jump)

        self.slider = QSlider(Qt.Horizontal)
        self.slider.setRange(0, self.player.duration() / 1000)
        font = QtGui.QFont('Calibri')
        self.labelDuration = QLabel()
        self.labelDuration.setFont(font)
        self.labelDuration.setStyleSheet('color: white;')
        self.slider.sliderMoved.connect(self.seek)
        openButton = QPushButton("Video", clicked=self.open)
        openButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        openButton.setFont(font)
        controls = PlayerControls()
        controls.setState(self.player.state())
        controls.setVolume(self.player.volume())
        controls.setMuted(controls.isMuted())

        controls.play.connect(self.player.play)
        controls.pause.connect(self.player.pause)
        controls.stop.connect(self.player.stop)
        controls.next.connect(self.playlist.next)
        controls.previous.connect(self.previousClicked)
        controls.changeVolume.connect(self.player.setVolume)
        controls.changeMuting.connect(self.player.setMuted)
        controls.changeRate.connect(self.player.setPlaybackRate)
        controls.stop.connect(self.videoWidget.update)

        self.player.stateChanged.connect(controls.setState)
        self.player.volumeChanged.connect(controls.setVolume)
        self.player.mutedChanged.connect(controls.setMuted)

        self.fullScreenButton = QPushButton("Full Screen")
        self.fullScreenButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.fullScreenButton.setCheckable(True)
        self.fullScreenButton.setFont(font)
        self.colorButton = QPushButton("Color Options...")
        self.colorButton.setStyleSheet('background-color: qlineargradient(spread:pad, x1:0, y1:1, x2:0, y2:0, stop:0 rgba(204, 204, 204, 1), stop:0.0227273 rgba(204, 204, 204, 1), stop:0.482955 rgba(204, 204, 204, 1), stop:0.98 rgba(204, 204, 204, 1), stop:1 rgba(204, 204, 204, 1));')
        self.colorButton.setEnabled(False)
        self.colorButton.setFont(font)
        self.colorButton.clicked.connect(self.showColorDialog)

        displayLayout = QHBoxLayout()
        displayLayout.addWidget(self.videoWidget, 2)
        displayLayout.addWidget(self.playlistView)

        controlLayout = QHBoxLayout()
        controlLayout.setContentsMargins(0, 0, 0, 0)
        controlLayout.addWidget(openButton)
        controlLayout.addStretch(1)
        controlLayout.addWidget(controls)
        controlLayout.addStretch(1)
        controlLayout.addWidget(self.fullScreenButton)
        controlLayout.addWidget(self.colorButton)

        layout = QVBoxLayout()
        layout.addLayout(displayLayout)
        hLayout = QHBoxLayout()
        hLayout.addWidget(self.slider)
        hLayout.addWidget(self.labelDuration)
        layout.addLayout(hLayout)
        layout.addLayout(controlLayout)
        #layout.addLayout(histogramLayout)

        self.setLayout(layout)

        if not self.player.isAvailable():
            QMessageBox.warning(self, "Service not available",
                    "The QMediaPlayer object does not have a valid service.\n"
                    "Please check the media service plugins are installed.")

            controls.setEnabled(False)
            self.playlistView.setEnabled(False)
            openButton.setEnabled(False)
            self.colorButton.setEnabled(False)
            self.fullScreenButton.setEnabled(False)

        self.metaDataChanged()

        self.addToPlaylist(playlist)

    def open(self):
        fileNames, _ = QFileDialog.getOpenFileNames(self, "Open Files")
        self.addToPlaylist(fileNames)
        self.player.play()

    def addToPlaylist(self, fileNames):
        for name in fileNames:
            fileInfo = QFileInfo(name)
            if fileInfo.exists():
                url = QUrl.fromLocalFile(fileInfo.absoluteFilePath())
                if fileInfo.suffix().lower() == 'm3u':
                    self.playlist.load(url)
                else:
                    self.playlist.addMedia(QMediaContent(url))
            else:
                url = QUrl(name)
                if url.isValid():
                    self.playlist.addMedia(QMediaContent(url))

    def durationChanged(self, duration):
        duration /= 1000

        self.duration = duration
        self.slider.setMaximum(duration)

    def positionChanged(self, progress):
        progress /= 1000

        if not self.slider.isSliderDown():
            self.slider.setValue(progress)

        self.updateDurationInfo(progress)

    def metaDataChanged(self):
        if self.player.isMetaDataAvailable():
            self.setTrackInfo("%s - %s" % (
                    self.player.metaData(QMediaMetaData.AlbumArtist),
                    self.player.metaData(QMediaMetaData.Title)))

    def previousClicked(self):
        # Go to the previous track if we are within the first 5 seconds of
        # playback.  Otherwise, seek to the beginning.
        if self.player.position() <= 5000:
            self.playlist.previous()
        else:
            self.player.setPosition(0)

    def jump(self, index):
        if index.isValid():
            self.playlist.setCurrentIndex(index.row())
            self.player.play()

    def playlistPositionChanged(self, position):
        self.playlistView.setCurrentIndex(
                self.playlistModel.index(position, 0))

    def seek(self, seconds):
        self.player.setPosition(seconds * 1000)

    def statusChanged(self, status):
        self.handleCursor(status)

        if status == QMediaPlayer.LoadingMedia:
            self.setStatusInfo("Loading...")
        elif status == QMediaPlayer.StalledMedia:
            self.setStatusInfo("Media Stalled")
        elif status == QMediaPlayer.EndOfMedia:
            QApplication.alert(self)
        elif status == QMediaPlayer.InvalidMedia:
            self.displayErrorMessage()
        else:
            self.setStatusInfo("")

    def handleCursor(self, status):
        if status in (QMediaPlayer.LoadingMedia, QMediaPlayer.BufferingMedia, QMediaPlayer.StalledMedia):
            self.setCursor(Qt.BusyCursor)
        else:
            self.unsetCursor()

    def bufferingProgress(self, progress):
        self.setStatusInfo("Buffering %d%" % progress)

    def videoAvailableChanged(self, available):
        if available:
            self.fullScreenButton.clicked.connect(
                    self.videoWidget.setFullScreen)
            self.videoWidget.fullScreenChanged.connect(
                    self.fullScreenButton.setChecked)

            if self.fullScreenButton.isChecked():
                self.videoWidget.setFullScreen(True)
        else:
            self.fullScreenButton.clicked.disconnect(
                    self.videoWidget.setFullScreen)
            self.videoWidget.fullScreenChanged.disconnect(
                    self.fullScreenButton.setChecked)

            self.videoWidget.setFullScreen(False)

        self.colorButton.setEnabled(available)

    def setTrackInfo(self, info):
        self.trackInfo = info

        if self.statusInfo != "":
            self.setWindowTitle("%s | %s" % (self.trackInfo, self.statusInfo))
        else:
            self.setWindowTitle(self.trackInfo)

    def setStatusInfo(self, info):
        self.statusInfo = info

        if self.statusInfo != "":
            self.setWindowTitle("%s | %s" % (self.trackInfo, self.statusInfo))
        else:
            self.setWindowTitle(self.trackInfo)

    def displayErrorMessage(self):
        self.setStatusInfo(self.player.errorString())

    def updateDurationInfo(self, currentInfo):
        duration = self.duration
        if currentInfo or duration:
            currentTime = QTime((currentInfo/3600)%60, (currentInfo/60)%60,
                    currentInfo%60, (currentInfo*1000)%1000)
            totalTime = QTime((duration/3600)%60, (duration/60)%60,
                    duration%60, (duration*1000)%1000);

            format = 'hh:mm:ss' if duration > 3600 else 'mm:ss'
            tStr = currentTime.toString(format) + " / " + totalTime.toString(format)
        else:
            tStr = ""

        self.labelDuration.setText(tStr)

    def showColorDialog(self):
        if self.colorDialog is None:
            brightnessSlider = QSlider(Qt.Horizontal)
            brightnessSlider.setStyleSheet('background-color: rgb(217, 217, 217);')
            brightnessSlider.setRange(-100, 100)
            brightnessSlider.setValue(self.videoWidget.brightness())
            brightnessSlider.sliderMoved.connect(
                    self.videoWidget.setBrightness)
            self.videoWidget.brightnessChanged.connect(
                    brightnessSlider.setValue)

            contrastSlider = QSlider(Qt.Horizontal)
            contrastSlider.setStyleSheet('background-color: rgb(217, 217, 217);')
            contrastSlider.setRange(-100, 100)
            contrastSlider.setValue(self.videoWidget.contrast())
            contrastSlider.sliderMoved.connect(self.videoWidget.setContrast)
            self.videoWidget.contrastChanged.connect(contrastSlider.setValue)

            hueSlider = QSlider(Qt.Horizontal)
            hueSlider.setStyleSheet('background-color: rgb(217, 217, 217);')
            hueSlider.setRange(-100, 100)
            hueSlider.setValue(self.videoWidget.hue())
            hueSlider.sliderMoved.connect(self.videoWidget.setHue)
            self.videoWidget.hueChanged.connect(hueSlider.setValue)

            saturationSlider = QSlider(Qt.Horizontal)
            saturationSlider.setStyleSheet('background-color: rgb(217, 217, 217);')
            saturationSlider.setRange(-100, 100)
            saturationSlider.setValue(self.videoWidget.saturation())
            saturationSlider.sliderMoved.connect(
                    self.videoWidget.setSaturation)
            self.videoWidget.saturationChanged.connect(
                    saturationSlider.setValue)

            layout = QFormLayout()
            lb1 = QLabel('Brightness')
            lb1.setStyleSheet('background-color: rgb(217, 217, 217);')
            lb2 = QLabel('Contrast')
            lb2.setStyleSheet('background-color: rgb(217, 217, 217);')
            lb3 = QLabel('Hue')
            lb3.setStyleSheet('background-color: rgb(217, 217, 217);')
            lb4 = QLabel('Saturation')
            lb4.setStyleSheet('background-color: rgb(217, 217, 217);')
            layout.addRow(lb1, brightnessSlider)
            layout.addRow(lb2, contrastSlider)
            layout.addRow(lb3, hueSlider)
            layout.addRow(lb4, saturationSlider)

            button = QPushButton("Close")
            button.setStyleSheet('background-color: rgb(217, 217, 217);')

            layout.addRow(button)

            self.colorDialog = QDialog(self)
            self.colorDialog.setWindowTitle("Color Options")
            self.colorDialog.setLayout(layout)

            button.clicked.connect(self.colorDialog.close)

        self.colorDialog.show()

任何帮助将不胜感激

0 个答案:

没有答案