本文整理汇总了Python中matplotlib.backends.backend_qt4agg.FigureCanvasQTAgg.buffer_rgba方法的典型用法代码示例。如果您正苦于以下问题：Python FigureCanvasQTAgg.buffer_rgba方法的具体用法？Python FigureCanvasQTAgg.buffer_rgba怎么用？Python FigureCanvasQTAgg.buffer_rgba使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类matplotlib.backends.backend_qt4agg.FigureCanvasQTAgg的用法示例。
在下文中一共展示了FigureCanvasQTAgg.buffer_rgba方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg [as 别名]
# 或者: from matplotlib.backends.backend_qt4agg.FigureCanvasQTAgg import buffer_rgba [as 别名]
def __init__(self, parent=None): #========================================
super(ImageViewer, self).__init__(parent)
self.scaleFactor = 0
self.scaleStep = 1.2
self.pan = False
#---- image container Set Up ----
self.imageLabel = QtGui.QLabel()
self.imageLabel.setBackgroundRole(QtGui.QPalette.Base)
self.imageLabel.setSizePolicy(QtGui.QSizePolicy.Ignored,
QtGui.QSizePolicy.Ignored)
self.imageLabel.setScaledContents(True)
self.imageLabel.installEventFilter(self)
self.imageLabel.setFrameStyle(QtGui.QFrame.Panel | QtGui.QFrame.Raised)
self.imageLabel.setLineWidth(2)
self.imageLabel.setMidLineWidth(1)
#---- Scroll Area Set Up ----
self.scrollArea = QtGui.QScrollArea(self)
self.scrollArea.setWidget(self.imageLabel)
self.scrollArea.setAlignment(QtCore.Qt.AlignCenter)
#---- Grid Set Up ----
grid = QtGui.QGridLayout()
grid.addWidget(self.scrollArea, 0, 0)
grid.setSpacing(10)
grid.setContentsMargins(0, 0, 0, 0) # (Left,Top, Right, Bottom)
self.setLayout(grid)
self.setWindowTitle("Image Viewer")
#---- Create Initial Image with Matplotlib ----
# http://stackoverflow.com/questions/17676373/
# python-matplotlib-pyqt-copy-image-to-clipboard
# http://stackoverflow.com/questions/21939658/
# matplotlib-render-into-buffer-access-pixel-data
figure = plt.figure()
figure.patch.set_facecolor('white')
figure_canvas = FigureCanvasQTAgg(figure)
figure_canvas.draw()
size = figure_canvas.size()
width, height = size.width(), size.height()
imgbuffer = figure_canvas.buffer_rgba()
image = QtGui.QImage(imgbuffer, width, height,
QtGui.QImage.Format_ARGB32)
# Reference for the RGB to BGR swap:
# http://sourceforge.net/p/matplotlib/mailman/message/5194542/
image = QtGui.QImage.rgbSwapped(image)
self.load_image(image, 0)示例2: ImageViewer
# 需要导入模块: from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg [as 别名]
# 或者: from matplotlib.backends.backend_qt4agg.FigureCanvasQTAgg import buffer_rgba [as 别名]
import sys
app = QtGui.QApplication(sys.argv)
imageViewer = ImageViewer()
imageViewer.show()
figure = plt.figure()
figure.set_size_inches(11, 8.5)
figure.patch.set_facecolor('white')
plt.plot([1, 2, 3, 4], [1, 2, 3, 4], '-b')
figure_canvas = FigureCanvasQTAgg(figure)
figure_canvas.draw()
size = figure_canvas.size()
width, height = size.width(), size.height()
print(width, height)
print(figure_canvas.get_width_height())
imgbuffer = figure_canvas.buffer_rgba()
image = QtGui.QImage(imgbuffer, width, height,
QtGui.QImage.Format_ARGB32)
# Reference for the RGB to BGR swap:
# http://sourceforge.net/p/matplotlib/mailman/message/5194542/
image = QtGui.QImage.rgbSwapped(image)
imageViewer.load_image(image, 0)
sys.exit(app.exec_())