我们从Python开源项目中，提取了以下9个代码示例，用于说明如何使用PyQt5.QtGui.QFontMetricsF()。
def __init__(self, brown_object, family_name, size, weight, italic): """ Args: brown_object (Brush): The object this interface belongs to family_name (str): The name of the font family size (Unit): The size of the font weight (int or None): The font weight. If `None`, a normal weight will be used. italic (bool): Italicized or not """ super().__init__(brown_object) self.family_name = family_name self.size = size self.weight = weight self.italic = italic self.qt_object = QtGui.QFont( self.family_name, GraphicUnit(self.size).value, self.weight if self.weight is not None else -1, self.italic) self._qt_font_info_object = QtGui.QFontInfo(self.qt_object) self._qt_font_metrics_object = QtGui.QFontMetricsF( self.qt_object, brown._app_interface.view) ######## PUBLIC PROPERTIES ########
def rescale(self): fm = QFontMetricsF(self._font, self) maxRect = fm.boundingRect(QRectF(self.rect()), Qt.AlignCenter, str(self._maximum)) xscale = float(self.width())/maxRect.width() yscale = float(self.height())/maxRect.height() self._scale = min(xscale, yscale)
def reposition(self): fm = QFontMetricsF(self._font, self) rect = fm.boundingRect(QRectF(self.rect()), Qt.AlignCenter, str(self._value)) self._xpos = -rect.width()/2.0 self._ypos = rect.height()/2.0 - fm.descent() self.update() # Provide getter and setter methods for the font property.
def _add_line(self, scene, line_index, left, text_str, font, color, offset=0, align_right=False): y = self._line_height * line_index + offset + self.h * 0.1 if line_index == 1: self._first_lyrics_line_y = y metrics = QFontMetricsF(font) text_width = metrics.width(text_str) max_text_width = (self.w - left - left) overflow = text_width - max_text_width if overflow <= 0: text = scene.addText(text_str, font) if align_right: text.setPos(self.w - left - text_width, y) else: text.setPos(left, y) text.setDefaultTextColor(color) else: scale_factor = max_text_width / text_width if scale_factor >= 0.9: text = scene.addText(text_str, font) text.setPos(left, y) text.setDefaultTextColor(color) text.setTransform(QTransform().scale(scale_factor, 1.0)) else: self._extra_lines_after.append(line_index) idx = len(text_str) // 2 while idx < len(text_str) and not text_str[idx].isspace(): idx += 1 line_index = self._add_line(scene, line_index, left, text_str[:idx], font, color, offset) line_index += 1 line_index = self._add_line(scene, line_index, left, "\t" + text_str[idx:], font, color, offset - self._line_height * 0.1) return line_index
def _calc_line_height(self, font): metrics = QFontMetricsF(font) line_height = metrics.height() * self.line_height_factor return line_height
