コード例 #1
0
ファイル: easing.py プロジェクト: death-finger/Scripts
    def createCurveIcons(self):
        pix = QPixmap(self.m_iconSize)
        painter = QPainter()

        gradient = QLinearGradient(0, 0, 0, self.m_iconSize.height())
        gradient.setColorAt(0.0, QColor(240, 240, 240))
        gradient.setColorAt(1.0, QColor(224, 224, 224))

        brush = QBrush(gradient)

        # The original C++ code uses undocumented calls to get the names of the
        # different curve types.  We do the Python equivalant (but without
        # cheating).
        curve_types = [(n, c) for n, c in QEasingCurve.__dict__.items()
                if isinstance(c, QEasingCurve.Type) and c != QEasingCurve.Custom]
        curve_types.sort(key=lambda ct: ct[1])

        painter.begin(pix)

        for curve_name, curve_type in curve_types:
            painter.fillRect(QRect(QPoint(0, 0), self.m_iconSize), brush)

            curve = QEasingCurve(curve_type)

            if curve_type == QEasingCurve.BezierSpline:
                curve.addCubicBezierSegment(QPointF(0.4, 0.1),
                        QPointF(0.6, 0.9), QPointF(1.0, 1.0))
            elif curve_type == QEasingCurve.TCBSpline:
                curve.addTCBSegment(QPointF(0.0, 0.0), 0, 0, 0)
                curve.addTCBSegment(QPointF(0.3, 0.4), 0.2, 1, -0.2)
                curve.addTCBSegment(QPointF(0.7, 0.6), -0.2, 1, 0.2)
                curve.addTCBSegment(QPointF(1.0, 1.0), 0, 0, 0)

            painter.setPen(QColor(0, 0, 255, 64))
            xAxis = self.m_iconSize.height() / 1.5
            yAxis = self.m_iconSize.width() / 3.0
            painter.drawLine(0, xAxis, self.m_iconSize.width(),  xAxis)
            painter.drawLine(yAxis, 0, yAxis, self.m_iconSize.height())

            curveScale = self.m_iconSize.height() / 2.0;

            painter.setPen(Qt.NoPen)

            # Start point.
            painter.setBrush(Qt.red)
            start = QPoint(yAxis,
                    xAxis - curveScale * curve.valueForProgress(0))
            painter.drawRect(start.x() - 1, start.y() - 1, 3, 3)

            # End point.
            painter.setBrush(Qt.blue)
            end = QPoint(yAxis + curveScale,
                    xAxis - curveScale * curve.valueForProgress(1))
            painter.drawRect(end.x() - 1, end.y() - 1, 3, 3)

            curvePath = QPainterPath()
            curvePath.moveTo(QPointF(start))
            t = 0.0
            while t <= 1.0:
                to = QPointF(yAxis + curveScale * t,
                        xAxis - curveScale * curve.valueForProgress(t))
                curvePath.lineTo(to)
                t += 1.0 / curveScale

            painter.setRenderHint(QPainter.Antialiasing, True)
            painter.strokePath(curvePath, QColor(32, 32, 32))
            painter.setRenderHint(QPainter.Antialiasing, False)

            item = QListWidgetItem()
            item.setIcon(QIcon(pix))
            item.setText(curve_name)
            self.m_ui.easingCurvePicker.addItem(item)

        painter.end()
コード例 #2
0
ファイル: easing.py プロジェクト: eudu/pyqt-examples
    def createCurveIcons(self):
        pix = QPixmap(self.m_iconSize)
        painter = QPainter()

        gradient = QLinearGradient(0, 0, 0, self.m_iconSize.height())
        gradient.setColorAt(0.0, QColor(240, 240, 240))
        gradient.setColorAt(1.0, QColor(224, 224, 224))

        brush = QBrush(gradient)

        # The original C++ code uses undocumented calls to get the names of the
        # different curve types.  We do the Python equivalant (but without
        # cheating).
        curve_types = [(n, c) for n, c in QEasingCurve.__dict__.items()
                if isinstance(c, QEasingCurve.Type) and c != QEasingCurve.Custom]
        curve_types.sort(key=lambda ct: ct[1])

        painter.begin(pix)

        for curve_name, curve_type in curve_types:
            painter.fillRect(QRect(QPoint(0, 0), self.m_iconSize), brush)

            curve = QEasingCurve(curve_type)

            if curve_type == QEasingCurve.BezierSpline:
                curve.addCubicBezierSegment(QPointF(0.4, 0.1),
                        QPointF(0.6, 0.9), QPointF(1.0, 1.0))
            elif curve_type == QEasingCurve.TCBSpline:
                curve.addTCBSegment(QPointF(0.0, 0.0), 0, 0, 0)
                curve.addTCBSegment(QPointF(0.3, 0.4), 0.2, 1, -0.2)
                curve.addTCBSegment(QPointF(0.7, 0.6), -0.2, 1, 0.2)
                curve.addTCBSegment(QPointF(1.0, 1.0), 0, 0, 0)

            painter.setPen(QColor(0, 0, 255, 64))
            xAxis = self.m_iconSize.height() / 1.5
            yAxis = self.m_iconSize.width() / 3.0
            painter.drawLine(0, xAxis, self.m_iconSize.width(),  xAxis)
            painter.drawLine(yAxis, 0, yAxis, self.m_iconSize.height())

            curveScale = self.m_iconSize.height() / 2.0;

            painter.setPen(Qt.NoPen)

            # Start point.
            painter.setBrush(Qt.red)
            start = QPoint(yAxis,
                    xAxis - curveScale * curve.valueForProgress(0))
            painter.drawRect(start.x() - 1, start.y() - 1, 3, 3)

            # End point.
            painter.setBrush(Qt.blue)
            end = QPoint(yAxis + curveScale,
                    xAxis - curveScale * curve.valueForProgress(1))
            painter.drawRect(end.x() - 1, end.y() - 1, 3, 3)

            curvePath = QPainterPath()
            curvePath.moveTo(QPointF(start))
            t = 0.0
            while t <= 1.0:
                to = QPointF(yAxis + curveScale * t,
                        xAxis - curveScale * curve.valueForProgress(t))
                curvePath.lineTo(to)
                t += 1.0 / curveScale

            painter.setRenderHint(QPainter.Antialiasing, True)
            painter.strokePath(curvePath, QColor(32, 32, 32))
            painter.setRenderHint(QPainter.Antialiasing, False)

            item = QListWidgetItem()
            item.setIcon(QIcon(pix))
            item.setText(curve_name)
            self.m_ui.easingCurvePicker.addItem(item)

        painter.end()
コード例 #3
0
    def paintEvent(self, e):
        """
        draw pixmap as a the background with a dark overlay

        HELP: currently, this cost much CPU
        """
        painter = QPainter(self)
        painter.setPen(Qt.NoPen)
        painter.setRenderHint(QPainter.Antialiasing)
        painter.setRenderHint(QPainter.SmoothPixmapTransform)

        # calculate available size
        draw_width = self.width()
        draw_height = 10  # spacing defined in table container
        draw_height += self.bottom_panel.height()
        if self.table_container.meta_widget.isVisible():
            draw_height += self.table_container.meta_widget.height()
        extra = self.table_container.current_extra
        if extra is not None and extra.isVisible():
            draw_height += extra.height()
        if self.table_container.toolbar.isVisible():
            draw_height += self.table_container.toolbar.height()

        scrolled = self.scrollarea.verticalScrollBar().value()
        max_scroll_height = draw_height - self.bottom_panel.height()

        # Do not draw the pixmap when it is not shown.
        if scrolled >= max_scroll_height:
            painter.save()
            painter.setBrush(self.palette().brush(QPalette.Window))
            painter.drawRect(self.bottom_panel.rect())
            painter.restore()
            return

        if self._pixmap is not None:
            self._draw_pixmap(painter, draw_width, draw_height, scrolled)
            self._draw_pixmap_overlay(painter, draw_width, draw_height, scrolled)
            curve = QEasingCurve(QEasingCurve.OutCubic)
            alpha_ratio = min(scrolled / max_scroll_height, 1)
            alpha = int(250 * curve.valueForProgress(alpha_ratio))
            painter.save()
            color = self.palette().color(QPalette.Window)
            color.setAlpha(alpha)
            painter.setBrush(color)
            painter.drawRect(self.bottom_panel.rect())
            painter.restore()
        else:
            # draw gradient for widgets(bottom panel + meta_widget + ...) above table
            self._draw_overlay(painter, draw_width, draw_height, scrolled)

            # if scrolled height > 30, draw background to seperate bottom_panel and body
            if scrolled >= 30:
                painter.save()
                painter.setBrush(self.palette().brush(QPalette.Window))
                painter.drawRect(self.bottom_panel.rect())
                painter.restore()
                return

            # since the body's background color is palette(base), we use
            # the color to draw background for remain empty area
            painter.save()
            painter.setBrush(self.palette().brush(QPalette.Base))
            painter.drawRect(0, draw_height, draw_width, self.height() - draw_height)
            painter.restore()
        painter.end()