Python QtWidgets.QGraphicsScene方法代码示例

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        super().__init__()
        self.show()
        self.setMinimumHeight(300)

        self.ib_qtimer = None
        self.ob_qtimer = None
        self.updating_gui_bool = False
        self.new_cycle_bool = True

        self.in_breath_graphics_qgri_list = []
        self.out_breath_graphics_qgri_list = []

        vbox_l2 = QtWidgets.QVBoxLayout()
        self.setLayout(vbox_l2)

        # vbox_l2.addWidget(QtWidgets.QLabel("Breathing History"))
        self.breathing_graphicsview = QtWidgets.QGraphicsView()  # QGraphicsScene
        vbox_l2.addWidget(self.breathing_graphicsview)
        self.breathing_graphicsscene = QtWidgets.QGraphicsScene()
        self.breathing_graphicsview.setScene(self.breathing_graphicsscene)
        # self.breathing_graphicsview.centerOn(QtCore.Qt.AlignRight)
        # alignment can be set with "setAlignment"
        self.breathing_graphicsview.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = QGraphicsScene(0, 0, 711, 601)
        self.scene.win = self
        self.view.setScene(self.scene)
        self.image = QImage(710, 600, QImage.Format_Alpha8)
        self.image.fill(black)
        self.pen = QPen(black)
        self.draw.clicked.connect(lambda: draw(self))
        self.dial_x.valueChanged.connect(lambda: draw(self))
        self.dial_y.valueChanged.connect(lambda: draw(self))
        self.dial_z.valueChanged.connect(lambda: draw(self))
        self.funcs.addItem("cos(x) * sin(z)")
        self.funcs.addItem("2 * cos(x * z)")
        self.funcs.addItem("exp(sin(sqrt(x^2 + z^2)))")
        self.funcs.addItem("x^2 / 20 + z^2 / 20")
        self.funcs.addItem("|sin(x) * sin(z)|") 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        QtWidgets.QWidget.__init__(self)
        uic.loadUi("window.ui", self)
        self.scene = QtWidgets.QGraphicsScene(0, 0, 511, 511)
        self.mainview.setScene(self.scene)
        self.image = QImage(511, 511, QImage.Format_ARGB32_Premultiplied)
        self.pen = QPen()
        self.color_line = QColor(Qt.black)
        self.color_bground = QColor(Qt.white)
        self.draw_once.clicked.connect(lambda: draw_once(self))
        self.clean_all.clicked.connect(lambda: clear_all(self))
        self.btn_bground.clicked.connect(lambda: get_color_bground(self))
        self.btn_line.clicked.connect(lambda: get_color_line(self))
        self.draw_centr.clicked.connect(lambda: draw_centr(self))
        layout = QtWidgets.QHBoxLayout()
        layout.addWidget(self.what)
        layout.addWidget(self.other)
        self.setLayout(layout)
        self.circle.setChecked(True)
        self.canon.setChecked(True)
        #self.circle.toggled.connect(lambda : change_text(self)) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        super().__init__()

        self.setObjectName('map-view')
        self.scene = QtWidgets.QGraphicsScene()
        self.setScene(self.scene)
        self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.setTransformationAnchor(QtWidgets.QGraphicsView.NoAnchor)
        self.setResizeAnchor(QtWidgets.QGraphicsView.NoAnchor)
        self.setMouseTracking(True)
        self.current_column = -1
        self.current_row = -1

        # TODO hardcore tile size somewhere else (and a bit less hard)
        self.TILE_SIZE = 80 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def init(self, app, datamanager):
        super().init(app, datamanager)
        self.statsColor = QtGui.QColor.fromRgb(20,255,23)
        self.dataManager = datamanager
        self.dataManager.registerRootObjectListener(self._onPipRootObjectEvent)
        self.statsView = self.widget.graphicsView
        self.statsScene = QtWidgets.QGraphicsScene()
        self.statsScene.setBackgroundBrush(QtGui.QBrush(QtGui.QColor.fromRgb(0,0,0)))
        self.statsView.setScene(self.statsScene)
        self.bodyCondFilePath = os.path.join('res', 'body_condition_0.svg')
        self.headCondFilePath = os.path.join('res', 'head_condition_0.svg')
        self.headCondition = 0
        headPixmap = self.imageFactory.getPixmap(self.headCondFilePath, height=50, color=self.statsColor)
        self.statsHeadItem = self.statsScene.addPixmap(headPixmap)
        self.statsHeadItem.setPos(-headPixmap.width()/2, 0)
        self.bodyCondition = 0
        bodyPixmap = self.imageFactory.getPixmap(self.bodyCondFilePath, height=100, color=self.statsColor)
        self.statsBodyItem = self.statsScene.addPixmap(bodyPixmap)
        self.statsBodyItem.setPos(-bodyPixmap.width()/2, 42) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def ok(self):

        self.gridLayoutWidget = QtWidgets.QWidget()
        self.gridLayoutWidget.setGeometry(QtCore.QRect(180, 10, 1100, 500))  # 定义gridLayout控件的大小和位置，4个数字分别为左边坐标，上边坐标，长，宽
        self.gridLayoutWidget.setObjectName("gridLayoutWidget")
        self.gridLayout_2 = QtWidgets.QGridLayout(self.gridLayoutWidget)  
        self.gridLayout_2.setContentsMargins(0, 0, 0, 0)  # 在gridLayoutWidget 上创建一个网格Layout，注意以gridLayoutWidget为参
        self.gridLayout_2.setObjectName("gridLayout_2")
        
        # ===通过graphicview来显示图形
        self.graphicview = QtWidgets.QGraphicsView(self.gridLayoutWidget)  # 第一步，创建一个QGraphicsView，注意同样以gridLayoutWidget为参
        self.graphicview.setObjectName("graphicview")
        self.gridLayout_2.addWidget(self.graphicview, 0, 0)  #第二步，将该QGraphicsView放入Layout中

        dr = Figure_Canvas() #实例化一个FigureCanvas
        dr.test()  # 画图
        graphicscene = QtWidgets.QGraphicsScene()  # 第三步，创建一个QGraphicsScene，因为加载的图形（FigureCanvas）不能直接放到graphicview控件中，必须先放到graphicScene，然后再把graphicscene放到graphicview中
        graphicscene.addWidget(dr)  # 第四步，把图形放到QGraphicsScene中，注意：图形是作为一个QWidget放到QGraphicsScene中的
        self.graphicview.setScene(graphicscene) # 第五步，把QGraphicsScene放入QGraphicsView
        self.graphicview.show()  # 最后，调用show方法呈现图形！Voila!! 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self,
                 scene: qw.QGraphicsScene,
                 point_radius: float = 0.5,
                 *,
                 draw_individual_polyline_elements: bool = False,
                 debug_draw_rect: bool = False):
        super().__init__()
        self.scene = scene
        self._color_cache = {}
        self.point_radius = point_radius
        self.draw_individual_polyline_elements = draw_individual_polyline_elements
        self._no_line = qg.QPen(qc.Qt.NoPen)
        self._no_fill = qg.QBrush(qc.Qt.NoBrush)
        self._font = qg.QFont()
        self._font_measurements = _get_font_measurements(self._font)
        self._debug_draw_rect = debug_draw_rect
        self._polyline_components: List[Union[_BufferedLineSegment, _BufferedArc]] = [] 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def show_image(self):
        img_cv = cv2.cvtColor(self.current_img, cv2.COLOR_RGB2BGR)
        img_width, img_height, a = img_cv.shape
        ratio_img = img_width/img_height
        ratio_scene = self.ui.graphicsView.width()/self.ui.graphicsView.height()
        if ratio_img > ratio_scene:
            width = int(self.ui.graphicsView.width())
            height = int(self.ui.graphicsView.width() / ratio_img)
        else:
            width = int(self.ui.graphicsView.height() * ratio_img)
            height = int(self.ui.graphicsView.height())
        img_resize = cv2.resize(img_cv, (height-5, width-5), interpolation=cv2.INTER_AREA)
        h, w, c = img_resize.shape
        bytesPerLine = w * 3
        qimg = QImage(img_resize.data, w, h, bytesPerLine, QImage.Format_RGB888)
        self.scene = QGraphicsScene()
        pix = QPixmap(qimg)
        self.scene.addPixmap(pix)
        self.ui.graphicsView.setScene(self.scene)

# 显示灰度图像 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def show_grayimage(self):
        img_cv = self.gray_image
        img_width, img_height = img_cv.shape
        ratio_img = img_width/img_height
        ratio_scene = self.ui.graphicsView.width()/self.ui.graphicsView.height()
        if ratio_img > ratio_scene:
            width = int(self.ui.graphicsView.width())
            height = int(self.ui.graphicsView.width() / ratio_img)
        else:
            width = int(self.ui.graphicsView.height() * ratio_img)
            height = int(self.ui.graphicsView.height())
        img_resize = cv2.resize(img_cv, (height-5, width-5), interpolation=cv2.INTER_AREA)
        h, w = img_resize.shape
        qimg = QImage(img_resize.data, w, h, w, QImage.Format_Grayscale8)
        self.scene = QGraphicsScene()
        pix = QPixmap(qimg)
        self.scene.addPixmap(pix)
        self.ui.graphicsView.setScene(self.scene)


# 显示直方图 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def data_scene(self) -> QGraphicsScene:
        n = self.samples_per_symbol * len(self.display_bits)
        y = np.ones(n, dtype=np.float32)

        for i, bit in enumerate(self.display_bits):
            if bit == "0":
                y[i*self.samples_per_symbol:(i + 1) * self.samples_per_symbol] = -1.0

        x = np.arange(0, n).astype(np.int64)

        scene = ZoomableScene()
        scene.setSceneRect(0, -1.25, n, 2.5)
        scene.setBackgroundBrush(settings.BGCOLOR)
        scene.addLine(0, 0, n, 0, QPen(settings.AXISCOLOR, 0))

        path = path_creator.array_to_QPath(x, y)
        scene.addPath(path, QPen(settings.LINECOLOR, 0))

        return scene 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        super().__init__()
        self.ui = Ui_NozzlePreview()
        self.ui.setupUi(self)

        self.brush = QBrush()
        self.brush.setStyle(1)
        self.scene = QGraphicsScene(self)
        self.upper = QGraphicsPolygonItem()
        self.lower = QGraphicsPolygonItem()
        self.upper.setBrush(self.brush)
        self.lower.setBrush(self.brush)
        self.scene.addItem(self.upper)
        self.scene.addItem(self.lower)
        self.ui.tabCrossSection.setScene(self.scene)

        self.ui.tabWidget.currentChanged.connect(self.rescale) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self, *args):
		super(SymbolScene, self).__init__(*args)
		self.symbolRoot = None
		self.symbolDict = {}
		self.baseRadius = 200
		self.totalRadius = 20
		self.unpinnedAngle = 1
		self.pinnedAngle   = 1

		self.highPosList   = []
		self.normalPosList = []
		self.lowPosList    = []

		self.callRef = {}

		from db.SymbolNode import SymbolNode
		self.widthDict = {SymbolNode.KIND_NAMESPACE: 10,
						  SymbolNode.KIND_FUNCTION:  30,
						  SymbolNode.KIND_VARIABLE:  10,
						  SymbolNode.KIND_CLASS:	 10,
						  SymbolNode.KIND_UNKNOWN:   10}

		self.setItemIndexMethod(QtWidgets.QGraphicsScene.BspTreeIndex) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def load_image_from_string(self, image_str):
        '''Loads an image into self.ui.image_pattern_view using a temporary QGraphicsScene'''

        # TODO Check for maximum width before loading the image
        self.pil_image = Image.open(image_str)

        self.pil_image = self.pil_image.convert("RGBA")

        self.refresh_scene()
        self.statusBar().showMessage(image_str)
        # Enable plugin elements after first load of image
        self.ui.widget_optionsdock.setEnabled(True)
        self.ui.menuImage_Actions.setEnabled(True)
        # Tell loaded plugin elements about changed parameters
        width, height = self.pil_image.size
        self.enabled_plugin.slotSetImageDimensions(width,
                                                   height) 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def __init__(self):
        super().__init__()
        self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.setFixedWidth(VIEW_WIDTH_INT)
        self.setFixedHeight(VIEW_HEIGHT_INT)
        t_brush = QtGui.QBrush(QtGui.QColor(mc.mc_global.MC_WHITE_COLOR_STR))
        self.setBackgroundBrush(t_brush)
        self.setRenderHints(
            QtGui.QPainter.Antialiasing |
            QtGui.QPainter.SmoothPixmapTransform
        )
        self.setAlignment(QtCore.Qt.AlignCenter)

        self._graphics_scene = QtWidgets.QGraphicsScene()
        self.setScene(self._graphics_scene)

        # Custom dynamic breathing graphic (may be possible to change this in the future)
        self._breathing_gi = BreathingGraphicsObject()
        self._graphics_scene.addItem(self._breathing_gi)
        self._breathing_gi.update_pos_and_origin_point(VIEW_WIDTH_INT, VIEW_HEIGHT_INT)
        self._breathing_gi.hover_signal.connect(self._breathing_gi_hover)
        # -Please note that for breathing in we use a static sized rectangle (instead of the one the user sees),
        # this is the reason for using "hover" instead of "enter above"
        self._breathing_gi.leave_signal.connect(self._breathing_gi_leave)

        # Text
        self.text_gi = TextGraphicsItem()
        self.text_gi.setAcceptHoverEvents(False)  # -so that the underlying item will not be disturbed
        ib_str = mc.model.PhrasesM.get(mc.mc_global.active_phrase_id_it).ib
        self.text_gi.setHtml(mc.mc_global.get_html(ib_str))
        self.text_gi.setTextWidth(200)
        self.text_gi.update_pos_and_origin_point(VIEW_WIDTH_INT, VIEW_HEIGHT_INT)
        self.text_gi.setDefaultTextColor(QtGui.QColor(mc.mc_global.MC_DARKER_GREEN_COLOR_STR))
        self._graphics_scene.addItem(self.text_gi)

        self._peak_scale_ft = 1 

# 需要导入模块: from PyQt5 import QtWidgets [as 别名]
# 或者: from PyQt5.QtWidgets import QGraphicsScene [as 别名]
def blurPixmap(pixmap, radius):
    effect = QGraphicsBlurEffect()
    effect.setBlurRadius(radius)
    buffer = QPixmap(pixmap)
    item = QGraphicsPixmapItem(buffer)
    item.setGraphicsEffect(effect)
    output = QPixmap(pixmap.width(), pixmap.height())
    painter = QtGui.QPainter(output)
    scene = QtWidgets.QGraphicsScene()
    view = QtWidgets.QGraphicsView(scene)
    scene.addItem(item)
    scene.render(painter)
    return output