Python QtGui.qRgb方法代码示例

# 需要导入模块: from PyQt4 import QtGui [as 别名]
# 或者: from PyQt4.QtGui import qRgb [as 别名]
def test_rgb(self):
        # from https://doc.qt.io/archives/qt-4.8/qcolor.html
        # typedef QRgb
        # An ARGB quadruplet on the format #AARRGGBB,
        # equivalent to an unsigned int.
        if ImageQt.qt_version == '5':
            from PyQt5.QtGui import qRgb
        elif ImageQt.qt_version == '4':
            from PyQt4.QtGui import qRgb
        elif ImageQt.qt_version == 'side':
            from PySide.QtGui import qRgb
        elif ImageQt.qt_version == 'side2':
            from PySide2.QtGui import qRgb

        self.assertEqual(qRgb(0, 0, 0), qRgba(0, 0, 0, 255))

        def checkrgb(r, g, b):
            val = ImageQt.rgb(r, g, b)
            val = val % 2**24  # drop the alpha
            self.assertEqual(val >> 16, r)
            self.assertEqual(((val >> 8) % 2**8), g)
            self.assertEqual(val % 2**8, b)

        checkrgb(0, 0, 0)
        checkrgb(255, 0, 0)
        checkrgb(0, 255, 0)
        checkrgb(0, 0, 255) 

# 需要导入模块: from PyQt4 import QtGui [as 别名]
# 或者: from PyQt4.QtGui import qRgb [as 别名]
def rgb(r, g, b):
    # use qRgb to pack the colors, and then turn the resulting long
    # into a negative integer with the same bitpattern.
    return (qRgb(r, g, b) & 0xffffff) - 0x1000000

##
# An PIL image wrapper for Qt.  This is a subclass of PyQt4's QImage
# class.
#
# @param im A PIL Image object, or a file name (given either as Python
#     string or a PyQt string object). 

# 需要导入模块: from PyQt4 import QtGui [as 别名]
# 或者: from PyQt4.QtGui import qRgb [as 别名]
def _create_icon(self, color_map_name, image, values):
        """"
        :type color_map_name: str
        :type image: QImage
        :type values: np.ndarray
        """

        color_map = ScalarMappable(cmap=color_map_name)
        rgba = color_map.to_rgba(values, bytes=True)

        color_table = [qRgb(c[0], c[1], c[2]) for c in rgba]
        image.setColorTable(color_table)

        return QPixmap.fromImage(image).scaledToWidth(128) 

# 需要导入模块: from PyQt4 import QtGui [as 别名]
# 或者: from PyQt4.QtGui import qRgb [as 别名]
def loadDisparities(self):
        if not self.enableDisparity:
            return
        if not self.showDisparity:
            return

        filename = self.getDisparityFilename()
        if not filename:
            self.dispImg = None
            return

        # If we have everything and the filename did not change, then we are good
        if self.dispImg and filename == self.currentDispFile:
            return

        # Clear the current labels first
        self.dispImg = None

        try:
            self.dispImg = Image.open(filename)
        except IOError as e:
            # This is the error if the file does not exist
            message = "Error parsing disparities in {0}. Message: {1}".format( filename, e.strerror )
            self.statusBar().showMessage(message)
            self.dispImg = None

        if self.dispImg:
            dispNp = np.array( self.dispImg )
            dispNp /= 128
            dispNp.round()
            dispNp = np.array( dispNp , dtype=np.uint8 )

            dispQt = QtGui.QImage( dispNp.data , dispNp.shape[1] , dispNp.shape[0] , QtGui.QImage.Format_Indexed8 )

            colortable = []
            for i in range(256):
                color = self.colormap.to_rgba(i)
                colorRgb = ( int(color[0]*255) , int(color[1]*255) , int(color[2]*255) )
                colortable.append( QtGui.qRgb( *colorRgb ) )

            dispQt.setColorTable( colortable )
            dispQt = dispQt.convertToFormat( QtGui.QImage.Format_ARGB32_Premultiplied )
            self.dispOverlay = dispQt

        # Remember the filename loaded
        self.currentDispFile = filename

        # Remember the status bar message to restore it later
        restoreMessage = self.statusBar().currentMessage()

        # Restore the message
        self.statusBar().showMessage( restoreMessage )

    #############################
    ## Drawing
    #############################

    # This method is called when redrawing everything
    # Can be manually triggered by self.update()
    # Note that there must not be any other self.update within this method
    # or any methods that are called within