我们从Python开源项目中，提取了以下12个代码示例，用于说明如何使用PyQt5.QtWidgets.QGraphicsView()。
def wheelEvent(self, event: QtGui.QWheelEvent): if event.modifiers() & QtCore.Qt.ShiftModifier: delta = event.angleDelta() if delta.y() > 0: scale = self.zoom_in else: scale = 1 / self.zoom_in # Set Anchors self.setResizeAnchor(QtWidgets.QGraphicsView.NoAnchor) self.setTransformationAnchor(QtWidgets.QGraphicsView.NoAnchor) cur_pos = self.mapToScene(event.pos()) self.scale(scale, scale) new_pos = self.mapToScene(event.pos()) delta_zoomed = new_pos - cur_pos self.translate(delta_zoomed.x(), delta_zoomed.y()) event.accept() return return super(VQVivFuncGraphCanvas, self).wheelEvent(event)
def addWidget(self, widget): super().addWidget(widget) if isinstance(widget, QtWidgets.QPlainTextEdit): self.text_preview = widget if isinstance(widget, QtWidgets.QGraphicsView): self.graphics_preview = widget
def keyReleaseEvent(self, event): if event.key() == QtCore.Qt.Key_Space and not event.isAutoRepeat(): self.setDragMode(QtWidgets.QGraphicsView.NoDrag) self.setInteractive(False) elif event.key() == QtCore.Qt.Key_Control: self.setInteractive(False) else: super().keyReleaseEvent(event)
def __init__(self, vw, syms, parent, *args, **kwargs): self.vw = vw self.syms = syms QtWidgets.QGraphicsView.__init__(self, parent=parent) e_qt_memory.EnviNavMixin.__init__(self) self.scene = DropGraphicsScene(parent=self) self.setScene(self.scene) self.scene.setStickyFocus(True) self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag) self.setBackgroundBrush(QtGui.QBrush(QtGui.QColor(self.bg_color))) self.setViewportUpdateMode(QtWidgets.QGraphicsView.BoundingRectViewportUpdate) self.setRenderHints(self.renderHints() | QtGui.QPainter.Antialiasing | QtGui.QPainter.SmoothPixmapTransform) self._orig_transform = self.transform() self._edge_pen = QtGui.QPen(QtGui.QBrush(QtGui.QColor(self.true_edge_color)), self.edge_width, QtCore.Qt.SolidLine, QtCore.Qt.RoundCap) ################################################################## # Function graph related stuff # holds the memory canvas instances for each basic block self._block_views = dict() self.func_va = None self.func_graph = None # the layout used for this graph self.graph_layout = None self._rend = viv_rend.WorkspaceRenderer(vw)
def __init__(self, vg, nodes, parent=None): QtWidgets.QGraphicsView.__init__(self, parent=parent) scene = QtWidgets.QGraphicsScene(parent=self) self.setScene(scene) self._v_nodecol = NodeColumn(vg, nodes, scene) self._v_vg = vg
def __init__(self, graph, parent=None): QtWidgets.QGraphicsView.__init__(self, parent=parent) vg_render.GraphRenderer.__init__(self, graph) scene = QtWidgets.QGraphicsScene(parent=self) self.setScene(scene)
def __init__(self): super().__init__() self.show() self.setMinimumHeight(300) self.setMinimumWidth(270) self.ib_qtimer = None self.ob_qtimer = None self.updating_gui_bool = False # self.breathing_rest_counter_int = 0 # self.breath_counter_int = 0 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) 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)
def __init__(self, scene, parent): super().__init__(scene, parent) self.setAlignment(Qt.AlignLeft | Qt.AlignTop) self.setDragMode(QtWidgets.QGraphicsView.RubberBandDrag) self.setMouseTracking(True) self.YScrollBar = QtWidgets.QScrollBar(Qt.Vertical, parent) self.XScrollBar = QtWidgets.QScrollBar(Qt.Horizontal, parent) self.setVerticalScrollBar(self.YScrollBar) self.setHorizontalScrollBar(self.XScrollBar) self.currentobj = None self.setRenderHints(QtGui.QPainter.Antialiasing | QtGui.QPainter.SmoothPixmapTransform)
def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(720, 480) MainWindow.setIconSize(QtCore.QSize(18, 18)) MainWindow.setDocumentMode(False) self.centralWidget = QtWidgets.QWidget(MainWindow) self.centralWidget.setObjectName("centralWidget") self.btnNewImage = QtWidgets.QPushButton(self.centralWidget) self.btnNewImage.setGeometry(QtCore.QRect(469, 200, 171, 61)) font = QtGui.QFont() font.setPointSize(16) self.btnNewImage.setFont(font) self.btnNewImage.setObjectName("btnNewImage") self.graphicsView = QtWidgets.QGraphicsView(self.centralWidget) self.graphicsView.setGeometry(QtCore.QRect(40, 120, 360, 240)) self.graphicsView.setObjectName("graphicsView") self.label = QtWidgets.QLabel(self.centralWidget) self.label.setGeometry(QtCore.QRect(40, 20, 631, 71)) font = QtGui.QFont() font.setPointSize(32) font.setUnderline(True) self.label.setFont(font) self.label.setAlignment(QtCore.Qt.AlignCenter) self.label.setWordWrap(False) self.label.setObjectName("label") MainWindow.setCentralWidget(self.centralWidget) self.menuBar = QtWidgets.QMenuBar(MainWindow) self.menuBar.setGeometry(QtCore.QRect(0, 0, 720, 17)) self.menuBar.setObjectName("menuBar") MainWindow.setMenuBar(self.menuBar) self.mainToolBar = QtWidgets.QToolBar(MainWindow) self.mainToolBar.setObjectName("mainToolBar") MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar) self.statusBar = QtWidgets.QStatusBar(MainWindow) self.statusBar.setObjectName("statusBar") MainWindow.setStatusBar(self.statusBar) self.retranslateUi(MainWindow) QtCore.QMetaObject.connectSlotsByName(MainWindow)
def __init__(self, *args, **kwargs): super(SongTextWidget, self).__init__(*args, **kwargs) self.setWindowTitle(self.tr("Lyrics")) self.w = 1920 self.h = 1080 self._progress = 0.0 # self._animated_progress = 0.0 self.title = "" self._linecount = 0 self._extra_lines_after = [] self._first_lyrics_line_y = 0 self._covered = True self.setMinimumHeight(9 * 50) self.setMinimumWidth(16 * 50) self.setSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.Minimum) self.setScene(QGraphicsScene(self)) self.setRenderHints(QPainter.HighQualityAntialiasing | QPainter.SmoothPixmapTransform) self.setInteractive(False) self.scene().setBackgroundBrush(Qt.black) self.setStyleSheet( "QGraphicsView { border-style: none; }" ) self._line_height = 10 self._document_height = 10 self._animation = None self._font_size = 40 self._line_increment = 2
def __init__(self, parent=None): super().__init__(parent) width, height = 800, 800 self.setGeometry(width, height, width, height) # configs, can be changed at runtime self.circle_line_color = Qt.gray self.crosshair_line_color = Qt.gray self.text_label_color = Qt.darkGreen self.measured_distances_color = Qt.green self.circle_count = 10 self.dot_width = 10 self.line_width = 1 self.distance_measurement_angle = 15 self.measurement_angle = 10 # degrees that one sensor covers self.fade_out_time = 4 # older measurements will fade out over this time self.add_text_labels = False # data self.measurements = [] self.added_time = dict() # measurement -> timestamp # drawing timer self.timer = QTimer() self.timer.setInterval(80) self.timer.timeout.connect(self.draw_radar) self.timer.start() # internal canvas setup self.layout = QHBoxLayout() self.setLayout(self.layout) self.scene = QGraphicsScene() self.scene.setSceneRect(0, 0, width, height) self.canvas = QGraphicsView() self.canvas.setRenderHint(QPainter.Antialiasing) self.canvas.setFixedSize(width, height) self.canvas.setAlignment(Qt.AlignLeft) self.canvas.setScene(self.scene) self.canvas.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.canvas.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff) self.layout.addWidget(self.canvas) # initial rendering self.draw_radar()
def __init__(self, mainWindow): super().__init__() self.mainWindow = mainWindow viewport = QtOpenGL.QGLWidget(QtOpenGL.QGLFormat(QtOpenGL.QGL.SampleBuffers)) viewport.format().setSwapInterval(0) #disable VSync. viewport.setAutoFillBackground(False) viewport = QtWidgets.QOpenGLWidget() viewportFormat = QtGui.QSurfaceFormat() viewportFormat.setSwapInterval(0) #disable VSync viewportFormat.setSamples(2**8) viewportFormat.setDefaultFormat(viewportFormat) viewport.setFormat(viewportFormat) self.setViewport(viewport) self.setAlignment(QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop) #self.setDragMode(QtWidgets.QGraphicsView.RubberBandDrag) self.setDragMode(QtWidgets.QGraphicsView.NoDrag) self.scoreScene = GuiScore(self) self.setScene(self.scoreScene) api.getCallbacksDatabase().setCursor.append(self.centerOnCursor) #returns a dict api.getCallbacksDatabase().updateBlockTrack.append(self.updateMode) self.xFactor = 1 #keep track of the x stretch factor. style = """ QScrollBar:horizontal { border: 1px solid black; } QScrollBar::handle:horizontal { background: #00b2b2; } QScrollBar:vertical { border: 1px solid black; } QScrollBar::handle:vertical { background: #00b2b2; } """ self.setStyleSheet(style) self._zoom() #no parameters, uses config values
