Python QtGui.QLabel类代码示例

    def __init__(self, parent, new_size, old_size, text="", keep_original_size=False):
        QDialog.__init__(self, parent)

        intfunc = lambda tup: [int(val) for val in tup]
        if intfunc(new_size) == intfunc(old_size):
            self.keep_original_size = True
        else:
            self.keep_original_size = keep_original_size
        self.width, self.height = new_size
        self.old_width, self.old_height = old_size
        self.ratio = self.width / self.height

        layout = QVBoxLayout()
        self.setLayout(layout)

        formlayout = QFormLayout()
        layout.addLayout(formlayout)

        if text:
            label = QLabel(text)
            label.setAlignment(Qt.AlignHCenter)
            formlayout.addRow(label)

        self.w_edit = w_edit = QLineEdit(self)
        w_valid = QIntValidator(w_edit)
        w_valid.setBottom(1)
        w_edit.setValidator(w_valid)

        self.h_edit = h_edit = QLineEdit(self)
        h_valid = QIntValidator(h_edit)
        h_valid.setBottom(1)
        h_edit.setValidator(h_valid)

        zbox = QCheckBox(_("Original size"), self)

        formlayout.addRow(_("Width (pixels)"), w_edit)
        formlayout.addRow(_("Height (pixels)"), h_edit)
        formlayout.addRow("", zbox)

        formlayout.addRow(_("Original size:"), QLabel("%d x %d" % old_size))
        self.z_label = QLabel()
        formlayout.addRow(_("Zoom factor:"), self.z_label)

        # Button box
        self.bbox = bbox = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        bbox.accepted.connect(self.accept)
        bbox.rejected.connect(self.reject)
        layout.addWidget(bbox)

        self.w_edit.setText(str(self.width))
        self.h_edit.setText(str(self.height))
        self.update_widgets()

        self.setWindowTitle(_("Resize"))

        w_edit.textChanged.connect(self.width_changed)
        h_edit.textChanged.connect(self.height_changed)
        zbox.toggled.connect(self.toggled_no_zoom)
        zbox.setChecked(self.keep_original_size)

    def __init__(self, parent, new_size, old_size, text=""):
        QDialog.__init__(self, parent)
        
        self.keep_original_size = False
        self.width, self.height = new_size
        self.old_width, self.old_height = old_size
        self.ratio = self.width/self.height

        layout = QVBoxLayout()
        self.setLayout(layout)
        
        formlayout = QFormLayout()
        layout.addLayout(formlayout)
        
        if text:
            label = QLabel(text)
            label.setAlignment(Qt.AlignHCenter)
            formlayout.addRow(label)
        
        self.w_edit = w_edit = QLineEdit(self)
        w_valid = QIntValidator(w_edit)
        w_valid.setBottom(1)
        w_edit.setValidator(w_valid)
                     
        self.h_edit = h_edit = QLineEdit(self)
        h_valid = QIntValidator(h_edit)
        h_valid.setBottom(1)
        h_edit.setValidator(h_valid)
        
        zbox = QCheckBox(_("Original size"), self)

        formlayout.addRow(_("Width (pixels)"), w_edit)
        formlayout.addRow(_("Height (pixels)"), h_edit)
        formlayout.addRow('', zbox)
        
        formlayout.addRow(_("Original size:"), QLabel("%d x %d" % old_size))
        self.z_label = QLabel()
        formlayout.addRow(_("Zoom factor:"), self.z_label)
        
        # Button box
        self.bbox = bbox = QDialogButtonBox(QDialogButtonBox.Ok|
                                            QDialogButtonBox.Cancel)
        self.connect(bbox, SIGNAL("accepted()"), SLOT("accept()"))
        self.connect(bbox, SIGNAL("rejected()"), SLOT("reject()"))
        layout.addWidget(bbox)

        self.w_edit.setText(str(self.width))
        self.h_edit.setText(str(self.height))
        self.update_widgets()
        
        self.setWindowTitle(_("Resize"))
        
        self.connect(w_edit, SIGNAL("textChanged(QString)"),
                     self.width_changed)
        self.connect(h_edit, SIGNAL("textChanged(QString)"),
                     self.height_changed)
        self.connect(zbox, SIGNAL("toggled(bool)"), self.toggled_no_zoom)

def get_image_label(name, default="not_found.png"):
    """
    Construct a QLabel from the file with specified name
    name, default: filenames with extensions
    """
    label = QLabel()
    pixmap = QPixmap(get_image_file_path(name, default))
    label.setPixmap(pixmap)
    return label

    def __init__(self, parent):
        QWidget.__init__(self, parent)
        font = QFont(get_family(MONOSPACE), 10, QFont.Normal)

        info_icon = QLabel()
        icon = get_std_icon("MessageBoxInformation").pixmap(24, 24)
        info_icon.setPixmap(icon)
        info_icon.setFixedWidth(32)
        info_icon.setAlignment(Qt.AlignTop)

        self.service_status_label = QLabel()
        self.service_status_label.setWordWrap(True)
        self.service_status_label.setAlignment(Qt.AlignTop)
        self.service_status_label.setFont(font)

        self.desc_label = QLabel()
        self.desc_label.setWordWrap(True)
        self.desc_label.setAlignment(Qt.AlignTop)
        self.desc_label.setFont(font)

        self.group_desc = QGroupBox("Description", self)
        layout = QHBoxLayout()
        layout.addWidget(info_icon)
        layout.addWidget(self.desc_label)
        layout.addStretch()
        layout.addWidget(self.service_status_label)

        self.group_desc.setLayout(layout)

        self.editor = CodeEditor(self)
        self.editor.setup_editor(linenumbers=True, font=font)
        self.editor.setReadOnly(False)
        self.group_code = QGroupBox("Source code", self)
        layout = QVBoxLayout()
        layout.addWidget(self.editor)
        self.group_code.setLayout(layout)

        self.enable_button = QPushButton(get_icon("apply.png"), "Enable", self)

        self.save_button = QPushButton(get_icon("filesave.png"), "Save", self)

        self.disable_button = QPushButton(get_icon("delete.png"), "Disable", self)

        self.refresh_button = QPushButton(get_icon("restart.png"), "Refresh", self)
        hlayout = QHBoxLayout()
        hlayout.addWidget(self.save_button)
        hlayout.addWidget(self.enable_button)
        hlayout.addWidget(self.disable_button)
        hlayout.addWidget(self.refresh_button)

        vlayout = QVBoxLayout()
        vlayout.addWidget(self.group_desc)
        vlayout.addWidget(self.group_code)
        self.html_window = HTMLWindow()
        vlayout.addWidget(self.html_window)

        vlayout.addLayout(hlayout)
        self.setLayout(vlayout)

        self.current_file = None

 def __init__(self, text, parent=None, angle=270,
              family=None, bold=False, italic=False, color=None):
     QLabel.__init__(self, text, parent)
     font = self.font()
     if family is not None:
         font.setFamily(get_family(family))
     font.setBold(bold)
     font.setItalic(italic)
     self.setFont(font)
     self.color = color
     self.angle = angle
     self.setAlignment(Qt.AlignCenter)

 def __init__(self, label, klass, wordwrap=False, **kwargs):
     QGroupBox.__init__(self, label)
     self.klass = klass
     self.dataset = klass(**kwargs)
     self.layout = QVBoxLayout()
     if self.dataset.get_comment():
         label = QLabel(self.dataset.get_comment())
         label.setWordWrap(wordwrap)
         self.layout.addWidget(label)
     self.grid_layout = QGridLayout()
     self.layout.addLayout(self.grid_layout)
     self.setLayout(self.layout)
     self.edit = self.get_edit_layout()

def get_image_layout(imagename, text="", tooltip="", alignment=Qt.AlignLeft):
    """
    Construct a QHBoxLayout including image from the file with specified name,
    left-aligned text [with specified tooltip]
    Return (layout, label)
    """
    layout = QHBoxLayout()
    if alignment in (Qt.AlignCenter, Qt.AlignRight):
        layout.addStretch()
    layout.addWidget(get_image_label(imagename))
    label = QLabel(text)
    label.setToolTip(tooltip)
    layout.addWidget(label)
    if alignment in (Qt.AlignCenter, Qt.AlignLeft):
        layout.addStretch()
    return (layout, label)    

 def sizeHint(self):
     hint = QLabel.sizeHint(self)
     width, height = hint.width(), hint.height()
     angle = self.angle*pi/180
     rotated_width = abs(width*cos(angle))+abs(height*sin(angle))
     rotated_height = abs(width*sin(angle))+abs(height*cos(angle))
     return QSize(rotated_width, rotated_height)

 def place_label(self, layout, row, column):
     """
     Place item label on layout at specified position (row, column)
     """
     label_text = self.item.get_prop_value("display", "label")
     unit = self.item.get_prop_value("display", "unit", '')
     if unit and not self.READ_ONLY:
         label_text += (' (%s)' % unit)
     self.label = QLabel(label_text)
     self.label.setToolTip(self.item.get_help())
     layout.addWidget(self.label, row, column)

 def create_widgets(self, parent, refresh_callback):
     self._refresh_callback = refresh_callback
     self.prefix_label = QLabel()
     font = self.prefix_label.font()
     font.setPointSize(font.pointSize()+self._size_offset)
     self.prefix_label.setFont(font)
     self.button = QPushButton()
     self.button.setIcon(get_icon('settings.png'))
     self.button.setToolTip(
                     _("Edit '%s' fit parameter properties") % self.name)
     self.button.clicked.connect(lambda: self.edit_param(parent))
     self.lineedit = QLineEdit()
     self.lineedit.editingFinished.connect(self.line_editing_finished)
     self.unit_label = QLabel(self.unit)
     self.slider = QSlider()
     self.slider.setOrientation(Qt.Horizontal)
     self.slider.setRange(0, self.steps-1)
     self.slider.valueChanged.connect(self.slider_value_changed)
     self.update(refresh=False)
     self.add_widgets([self.prefix_label, self.lineedit, self.unit_label,
                       self.slider, self.button])

class DataSetShowWidget(AbstractDataSetWidget):
    """Read-only base widget"""
    READ_ONLY = True
    def __init__(self, item, parent_layout):
        AbstractDataSetWidget.__init__(self, item, parent_layout)
        self.group = QLabel()
        wordwrap = item.get_prop_value("display", "wordwrap", False)
        self.group.setWordWrap(wordwrap)
        self.group.setToolTip(item.get_help())
        self.group.setStyleSheet( LABEL_CSS )
        self.group.setTextInteractionFlags(Qt.TextSelectableByMouse)
        #self.group.setEnabled(False)

    def get(self):
        """Override AbstractDataSetWidget method"""
        self.set_state()
        text = self.item.get_string_value()
        self.group.setText(text)

    def set(self):
        """Read only..."""
        pass

 def __init__(self, parent):
     QWidget.__init__(self, parent)
     layout = QHBoxLayout()
     row_nb = 14
     cindex = 0
     for child in dir(QStyle):
         if child.startswith('SP_'):
             if cindex == 0:
                 col_layout = QVBoxLayout()
             icon_layout = QHBoxLayout()
             icon = get_std_icon(child)
             label = QLabel()
             label.setPixmap(icon.pixmap(32, 32))
             icon_layout.addWidget( label )
             icon_layout.addWidget( QLineEdit(child.replace('SP_', '')) )
             col_layout.addLayout(icon_layout)
             cindex = (cindex+1) % row_nb
             if cindex == 0:
                 layout.addLayout(col_layout)                    
     self.setLayout(layout)
     self.setWindowTitle('Standard Platform Icons')
     self.setWindowIcon(get_std_icon('TitleBarMenuButton'))

    def setup_instance(self, instance):
        """Override DataSetEditDialog method"""
        from guidata.dataset.datatypes import DataSetGroup
        assert isinstance(instance, DataSetGroup)
        tabs = QTabWidget()
#        tabs.setUsesScrollButtons(False)
        self.layout.addWidget(tabs)
        for dataset in instance.datasets:
            layout = QVBoxLayout()
            layout.setAlignment(Qt.AlignTop)
            if dataset.get_comment():
                label = QLabel(dataset.get_comment())
                label.setWordWrap(self.wordwrap)
                layout.addWidget(label)
            grid = QGridLayout()
            self.edit_layout.append( self.layout_factory(dataset, grid) )
            layout.addLayout(grid)
            page = QWidget()
            page.setLayout(layout)
            if dataset.get_icon():
                tabs.addTab( page, get_icon(dataset.get_icon()),
                             dataset.get_title() )
            else:
                tabs.addTab( page, dataset.get_title() )

class TestPropertiesWidget(QWidget):
    def __init__(self, parent):
        QWidget.__init__(self, parent)
        font = QFont(get_family(MONOSPACE), 10, QFont.Normal)
        
        info_icon = QLabel()
        icon = get_std_icon('MessageBoxInformation').pixmap(24, 24)
        info_icon.setPixmap(icon)
        info_icon.setFixedWidth(32)
        info_icon.setAlignment(Qt.AlignTop)
        self.desc_label = QLabel()
        self.desc_label.setWordWrap(True)
        self.desc_label.setAlignment(Qt.AlignTop)
        self.desc_label.setFont(font)
        group_desc = QGroupBox(_("Description"), self)
        layout = QHBoxLayout()
        layout.addWidget(info_icon)
        layout.addWidget(self.desc_label)
        group_desc.setLayout(layout)
        
        self.editor = CodeEditor(self)
        self.editor.setup_editor(linenumbers=True, font=font)
        self.editor.setReadOnly(True)
        group_code = QGroupBox(_("Source code"), self)
        layout = QVBoxLayout()
        layout.addWidget(self.editor)
        group_code.setLayout(layout)
        
        self.run_button = QPushButton(get_icon("apply.png"),
                                      _("Run this script"), self)
        self.quit_button = QPushButton(get_icon("exit.png"), _("Quit"), self)
        hlayout = QHBoxLayout()
        hlayout.addWidget(self.run_button)
        hlayout.addStretch()
        hlayout.addWidget(self.quit_button)
        
        vlayout = QVBoxLayout()
        vlayout.addWidget(group_desc)
        vlayout.addWidget(group_code)
        vlayout.addLayout(hlayout)
        self.setLayout(vlayout)
        
    def set_item(self, test):
        self.desc_label.setText(test.get_description())
        self.editor.set_text_from_file(test.filename)

class FitParam(object):
    def __init__(self, name, value, min, max, logscale=False,
                 steps=5000, format='%.3f', size_offset=0, unit=''):
        self.name = name
        self.value = value
        self.min = min
        self.max = max
        self.logscale = logscale
        self.steps = steps
        self.format = format
        self.unit = unit
        self.prefix_label = None
        self.lineedit = None
        self.unit_label = None
        self.slider = None
        self.button = None
        self._widgets = []
        self._size_offset = size_offset
        self._refresh_callback = None
        self.dataset = FitParamDataSet(title=_("Curve fitting parameter"))
        
    def copy(self):
        """Return a copy of this fitparam"""
        return self.__class__(self.name, self.value, self.min, self.max,
                              self.logscale, self.steps, self.format,
                              self._size_offset, self.unit)
        
    def create_widgets(self, parent, refresh_callback):
        self._refresh_callback = refresh_callback
        self.prefix_label = QLabel()
        font = self.prefix_label.font()
        font.setPointSize(font.pointSize()+self._size_offset)
        self.prefix_label.setFont(font)
        self.button = QPushButton()
        self.button.setIcon(get_icon('settings.png'))
        self.button.setToolTip(
                        _("Edit '%s' fit parameter properties") % self.name)
        self.button.clicked.connect(lambda: self.edit_param(parent))
        self.lineedit = QLineEdit()
        self.lineedit.editingFinished.connect(self.line_editing_finished)
        self.unit_label = QLabel(self.unit)
        self.slider = QSlider()
        self.slider.setOrientation(Qt.Horizontal)
        self.slider.setRange(0, self.steps-1)
        self.slider.valueChanged.connect(self.slider_value_changed)
        self.update(refresh=False)
        self.add_widgets([self.prefix_label, self.lineedit, self.unit_label,
                          self.slider, self.button])
        
    def add_widgets(self, widgets):
        self._widgets += widgets
        
    def get_widgets(self):
        return self._widgets
        
    def set_scale(self, state):
        self.logscale = state > 0
        self.update_slider_value()
        
    def set_text(self, fmt=None):
        style = "<span style=\'color: #444444\'><b>%s</b></span>"
        self.prefix_label.setText(style % self.name)
        if self.value is None:
            value_str = ''
        else:
            if fmt is None:
                fmt = self.format
            value_str = fmt % self.value
        self.lineedit.setText(value_str)
        self.lineedit.setDisabled(
                            self.value == self.min and self.max == self.min)
        
    def line_editing_finished(self):
        try:
            self.value = float(self.lineedit.text())
        except ValueError:
            self.set_text()
        self.update_slider_value()
        self._refresh_callback()
        
    def slider_value_changed(self, int_value):
        if self.logscale:
            total_delta = np.log10(1+self.max-self.min)
            self.value = self.min+10**(total_delta*int_value/(self.steps-1))-1
        else:
            total_delta = self.max-self.min
            self.value = self.min+total_delta*int_value/(self.steps-1)
        self.set_text()
        self._refresh_callback()
    
    def update_slider_value(self):
        if (self.value is None or self.min is None or self.max is None):
            self.slider.setEnabled(False)
            if self.slider.parent() and self.slider.parent().isVisible():
                self.slider.show()
        elif self.value == self.min and self.max == self.min:
            self.slider.hide()
        else:
            self.slider.setEnabled(True)
            if self.slider.parent() and self.slider.parent().isVisible():
#.........这里部分代码省略.........