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()
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()
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()