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223 | class CheckboxDrawer:
def __init__(self, style_inst: AYONStyle) -> None:
self.style_inst = style_inst
self.model = style_inst.model
@property
def _super(self):
"""Return proxy for calling QCommonStyle methods on style_inst."""
from ..style import AYONStyle as _AYONStyle
return super(_AYONStyle, self.style_inst)
@property
def base_class(self):
return {"QCheckBox": QCheckBox}
def register_drawers(self):
return {
enum_to_str(
QStyle.ControlElement,
QStyle.ControlElement.CE_CheckBox,
"QCheckBox",
): self.draw_indicator,
enum_to_str(
QStyle.PrimitiveElement,
QStyle.PrimitiveElement.PE_IndicatorCheckBox,
"QCheckBox",
): self.draw_toggle,
enum_to_str(
QStyle.PrimitiveElement,
QStyle.PrimitiveElement.PE_FrameFocusRect,
"QCheckBox",
): do_nothing,
}
def register_metrics(self):
return {
enum_to_str(
QStyle.PixelMetric,
QStyle.PixelMetric.PM_IndicatorWidth,
"QCheckBox",
): self.get_metric,
enum_to_str(
QStyle.PixelMetric,
QStyle.PixelMetric.PM_IndicatorHeight,
"QCheckBox",
): self.get_metric,
enum_to_str(
QStyle.PixelMetric,
QStyle.PixelMetric.PM_CheckBoxLabelSpacing,
"QCheckBox",
): self.get_metric,
}
def get_metric(
self,
metric: QStyle.PixelMetric,
opt: QStyleOption | None = None,
widget: QWidget | None = None,
):
variant = getattr(widget, "_variant_str", "default")
style = self.model.get_style(
"QCheckBox",
variant=variant,
)
style.set_context(widget)
metrics_h = widget.fontMetrics().height() if widget else 18
metrics_w = metrics_h * 2 if widget else 32
if metric == QStyle.PixelMetric.PM_IndicatorWidth:
# if indicator-width == 0, use 2x the font height.
return style.get("indicator-width", metrics_w) or metrics_w
elif metric == QStyle.PixelMetric.PM_IndicatorHeight:
# if indicator-height == 0, use the font height.
return style.get("indicator-height", metrics_h) or metrics_h
elif metric == QStyle.PixelMetric.PM_CheckBoxLabelSpacing:
return style.get("checkbox-label-spacing", 8)
return 0
def draw_indicator(
self,
option: QStyleOption,
painter: QPainter,
widget: QWidget | None,
):
variant = getattr(widget, "_variant_str", "default")
state = (
"checked" if option.state & QStyle.StateFlag.State_On else "base"
)
style = self.model.get_style(
"QCheckBox",
variant=variant,
state=state,
)
style.set_context(widget)
if style.get("background-color"):
painter.save()
painter.setBrush(QColor(style["background-color"]))
painter.setPen(Qt.PenStyle.NoPen)
radius = style.get("border-radius", 0)
painter.drawRoundedRect(option.rect, radius, radius)
painter.restore()
if style.get("indicator-position", "left") == "right":
# Manually draw a centred [label toggle] group so that padding
# is equal on both sides, instead of relying on Qt's layout.
s = self.style_inst
ind_w = s.pixelMetric(
QStyle.PixelMetric.PM_IndicatorWidth, option, widget
)
ind_h = s.pixelMetric(
QStyle.PixelMetric.PM_IndicatorHeight, option, widget
)
spacing = s.pixelMetric(
QStyle.PixelMetric.PM_CheckBoxLabelSpacing, option, widget
)
text = getattr(option, "text", "")
fm = option.fontMetrics
text_w = fm.horizontalAdvance(text) if text else 0
text_h = fm.height()
total_w = text_w + (spacing + ind_w if text_w else ind_w)
rect = option.rect
cx = rect.center().x()
cy = rect.center().y()
x = cx - total_w // 2
painter.save()
if text:
painter.setPen(
QColor(style["color"])
if style.get("color")
else option.palette.color(QPalette.ColorRole.WindowText)
)
text_rect = QRect(x, cy - text_h // 2, text_w, text_h)
painter.drawText(
text_rect,
Qt.AlignmentFlag.AlignVCenter | Qt.AlignmentFlag.AlignLeft,
text,
)
toggle_opt = QStyleOption(option)
toggle_opt.rect = QRect(
x + text_w + (spacing if text_w else 0),
cy - ind_h // 2,
ind_w,
ind_h,
)
self.draw_toggle(toggle_opt, painter, widget)
painter.restore()
return
if style.get("color"):
option.palette.setColor(
QPalette.ColorRole.WindowText, QColor(style["color"])
)
self._super.drawControl(
QStyle.ControlElement.CE_CheckBox, option, painter, widget
)
def draw_toggle(
self,
option: QStyleOption,
painter: QPainter,
w: QWidget | None = None,
):
painter.save()
painter.setRenderHint(QPainter.RenderHint.Antialiasing, True)
# get style data
checked = bool(option.state & QStyle.StateFlag.State_On)
variant = getattr(w, "_variant_str", "default")
style = self.model.get_style(
"QCheckBox",
variant=variant,
state="checked" if checked else "base",
)
style.set_context(w)
# draw toggle background
painter.setBrush(QColor(style["indicator-background-color"]))
if style.get("indicator-border-width", 0):
pen = QPen(QColor(style["indicator-border-color"]))
pen.setWidth(style.get("indicator-border-width", 0))
painter.setPen(pen)
else:
painter.setPen(Qt.PenStyle.NoPen)
frame_rect: QRectF = option.rect.toRectF().adjusted(1, 0, -1, 0)
radius = frame_rect.height() / 2.0
painter.drawRoundedRect(frame_rect, radius, radius)
# draw toggle knob
painter.setBrush(QColor(style["indicator-color"]))
offset = frame_rect.height() * 0.125
state_rect: QRectF = frame_rect.adjusted(
offset, offset, -offset, -offset
)
state_rect.setWidth(state_rect.height())
if checked:
state_rect.moveRight(frame_rect.right() - offset)
painter.drawEllipse(state_rect)
painter.restore()
|