class Panel(QWidget): characterSelected = Signal(str) fontResized = Signal(float) def __init__(self, parent=None): super().__init__(parent) self.displayFont = QFont() self.displayFont.setStyleStrategy(QFont.PreferDefault) self.updateFont(self.displayFont.family()) self.currentChar = "" self.setMouseTracking(True) self.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Expanding) def updateFont(self, family): self.displayFont.setFamily(family) self.updateSize(self.displayFont.pointSize()) def updateSize(self, size): size = int(size) self.displayFont.setPointSize(size) self.squareSize = max(SQUARE_SIZE, QFontMetrics(self.displayFont).xHeight() * 3) self.fontResized.emit(self.squareSize) self.adjustSize() self.update() def minimumWidth(self): return COLUMNS * self.squareSize def sizeHint(self): return QSize(self.minimumWidth(), (MAX_CHAR / COLUMNS) * self.squareSize) def mousePressEvent(self, event): if event.button() == Qt.LeftButton: self.currentChar = chr((event.y() // self.squareSize) * COLUMNS + event.x() // self.squareSize) if not unicodedata.category(self.currentChar).startswith("C"): self.characterSelected.emit(self.currentChar) self.update() else: super().mousePressEvent(event) def mouseMoveEvent(self, event): pos = self.mapFromGlobal(event.globalPos()) code = ((pos.y() // self.squareSize) * COLUMNS + pos.x() // self.squareSize) name = "unnamed" try: name = unicodedata.name(chr(code)).capitalize() except ValueError: pass text = """<p><span style="font-size: 18pt;">{0:c}</span></p> <p><span style="font-size: 13pt;">U+{0:04X}<br>{1}</span></p>""".format( code, name) QToolTip.showText(event.globalPos(), text, self) def paintEvent(self, event): painter = QPainter(self) painter.fillRect(event.rect(), Qt.white) painter.setFont(self.displayFont) redrawRect = event.rect() beginRow = redrawRect.top() // self.squareSize endRow = redrawRect.bottom() // self.squareSize beginColumn = redrawRect.left() // self.squareSize endColumn = redrawRect.right() // self.squareSize painter.setPen(Qt.gray) for row in range(beginRow, endRow + 1): for column in range(beginColumn, endColumn + 1): painter.drawRect(column * self.squareSize, row * self.squareSize, self.squareSize, self.squareSize) fontMetrics = QFontMetrics(self.displayFont) painter.setPen(Qt.black) for row in range(beginRow, endRow + 1): for column in range(beginColumn, endColumn + 1): char = chr(row * COLUMNS + column) painter.setClipRect(column * self.squareSize, row * self.squareSize, self.squareSize, self.squareSize) if char == self.currentChar: painter.fillRect(column * self.squareSize + 1, row * self.squareSize + 1, self.squareSize, self.squareSize, Qt.green) painter.drawText( column * self.squareSize + (self.squareSize / 2) - fontMetrics.width(char) / 2, row * self.squareSize + 4 + fontMetrics.ascent(), char)
class Bar(QToolBar): clicked = Signal(str) def __init__(self, orientation=Qt.Horizontal, parent=None): super().__init__(parent) self.setOrientation(orientation) policy = QSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed, QSizePolicy.ButtonBox) policy.setHeightForWidth(True) policy.setWidthForHeight(True) self.setSizePolicy(policy) self.setFloatable(False) self.setToolTip("""<p><b>Goto Letter</b></p> <p>Left-click a letter to navigate to the first entry starting with that letter.</p> <p>Right-click a letter to navigate to the first entry starting with the most recently left-clicked letter, plus any subsequent right-clicked letters, and this letter.</p> <p>(One left-click or a fifth right-click clears the previous letters.)</p> <p>For example, left-click <i>S</i> to go to the first “s” entry. Then right-click <i>A</i> to go to the first “sa” entry, then right-click <i>T</i> to go to the first “sat” entry.</p>""") self.timer = QTimer(self) self.timer.setSingleShot(True) self.timer.timeout.connect(self.onTimeout) size = self.font().pointSizeF() strategy = QFont.StyleStrategy(QFont.PreferOutline | QFont.PreferAntialias | QFont.PreferQuality) self.mainFont = QFont("courier new") self.mainFont.setFixedPitch(True) self.mainFont.setStyleStrategy(strategy) self.mainFont.setStyleHint(QFont.Monospace) self.mainFont.setPointSizeF(size * 1.5) self.mainFont.setBold(True) self.mainFont.setItalic(False) self.setFont(self.mainFont) self.smallFont = QFont("helvetica") self.smallFont.setStyleStrategy(strategy) self.smallFont.setStyleHint(QFont.Times) self.smallFont.setPointSizeF(size * 1.25) self.smallFont.setBold(False) self.smallFont.setItalic(False) self.letters = string.ascii_uppercase self.word = None def sizeHint(self): return self.minimumSizeHint() def minimumSizeHint(self): count = len(self.letters) widthAll = self.fontMetrics().width(self.letters) * H_GAP_PC widthW = self.fontMetrics().width("WW") heightOne = self.fontMetrics().height() if self.orientation == Qt.Vertical: return QSize(widthW, (heightOne * count) + HANDLE_OFFSET) return QSize(widthAll + HANDLE_OFFSET, heightOne * V_GAP_PC) def paintEvent(self, event): super().paintEvent(event) letterPen = QPen(Qt.darkGreen if self.isEnabled() else Qt.lightGray) wordPen = QPen(Qt.darkCyan if self.isEnabled() else Qt.lightGray) painter = QPainter(self) painter.setRenderHints(QPainter.TextAntialiasing) painter.setPen(letterPen) heightOne = self.fontMetrics().height() widthOne = self.fontMetrics().width("W") if self.orientation == Qt.Vertical: y = HANDLE_OFFSET for c in self.letters: rect = QRectF(X_OFFSET, y, widthOne, heightOne) painter.drawText(rect, Qt.AlignCenter, c) y += heightOne if self.word is not None: painter.setFont(self.smallFont) painter.setPen(wordPen) rect = self.rect().adjusted(0, HANDLE_OFFSET, -widthOne / 3, 0) painter.drawText(rect, Qt.AlignTop | Qt.AlignRight | Qt.TextWordWrap, "\n".join(self.word.lower())) painter.setPen(letterPen) painter.setFont(self.mainFont) else: widthOne *= H_GAP_PC x = HANDLE_OFFSET for c in self.letters: rect = QRectF(x, 0, widthOne, heightOne * V_GAP_PC) painter.drawText(rect, Qt.AlignCenter, c) x += widthOne if self.word is not None: painter.setFont(self.smallFont) painter.setPen(wordPen) rect = self.rect().adjusted(HANDLE_OFFSET, 0, 0, 0) painter.drawText(rect, Qt.AlignBottom | Qt.AlignLeft, self.word.lower()) painter.setPen(letterPen) painter.setFont(self.mainFont) def mousePressEvent(self, event): if self.orientation == Qt.Vertical: if event.y() < HANDLE_OFFSET: event.ignore() return heightOne = self.fontMetrics().height() i = clamp(0, int((event.y() - HANDLE_OFFSET) / heightOne), len(self.letters) - 1) else: if event.x() < HANDLE_OFFSET: event.ignore() return widthOne = self.fontMetrics().width("W") * H_GAP_PC i = clamp(0, int((event.x() - HANDLE_OFFSET) / widthOne), len(self.letters) - 1) event.accept() word = self.letters[i] if event.button() == Qt.LeftButton or self.word is None: self.word = word elif event.button() == Qt.RightButton: if len(self.word) >= 4: self.word = word elif self.word is not None: self.word += word if self.word is not None: self.clicked.emit(self.word.lower()) self.timer.start(10000) self.update() def contextMenuEvent(self, event): if ((self.orientation == Qt.Vertical and event.y() < HANDLE_OFFSET) or (self.orientation == Qt.Horizontal and event.x() < HANDLE_OFFSET)): event.ignore() else: event.accept() def setOrientation(self, orientation): self.orientation = orientation self.update() def heightForWidth(self, width): count = len(self.letters) heightOne = self.fontMetrics().height() widthAll = self.fontMetrics().width(self.letters) * H_GAP_PC if widthAll > width: # Needs to be vertical return heightOne * count return heightOne * V_GAP_PC # Needs to be horizontal def onTimeout(self): self.timer.stop() if self.word is not None: self.word = None self.update()