C++ Painter::drawEllipse方法代码示例

// Emulates Ui::RoundImageCheckbox::paint() in a checked state.
void PeerListRow::paintDisabledCheckUserpic(
		Painter &p,
		const style::PeerListItem &st,
		int x,
		int y,
		int outerWidth) const {
	auto userpicRadius = st::contactsPhotoCheckbox.imageSmallRadius;
	auto userpicShift = st::contactsPhotoCheckbox.imageRadius - userpicRadius;
	auto userpicDiameter = st::contactsPhotoCheckbox.imageRadius * 2;
	auto userpicLeft = x + userpicShift;
	auto userpicTop = y + userpicShift;
	auto userpicEllipse = rtlrect(x, y, userpicDiameter, userpicDiameter, outerWidth);
	auto userpicBorderPen = st::contactsPhotoDisabledCheckFg->p;
	userpicBorderPen.setWidth(st::contactsPhotoCheckbox.selectWidth);

	auto iconDiameter = st::contactsPhotoCheckbox.check.size;
	auto iconLeft = x + userpicDiameter + st::contactsPhotoCheckbox.selectWidth - iconDiameter;
	auto iconTop = y + userpicDiameter + st::contactsPhotoCheckbox.selectWidth - iconDiameter;
	auto iconEllipse = rtlrect(iconLeft, iconTop, iconDiameter, iconDiameter, outerWidth);
	auto iconBorderPen = st::contactsPhotoCheckbox.check.border->p;
	iconBorderPen.setWidth(st::contactsPhotoCheckbox.selectWidth);

	if (_isSavedMessagesChat) {
		Ui::EmptyUserpic::PaintSavedMessages(p, userpicLeft, userpicTop, outerWidth, userpicRadius * 2);
	} else {
		peer()->paintUserpicLeft(p, userpicLeft, userpicTop, outerWidth, userpicRadius * 2);
	}

	{
		PainterHighQualityEnabler hq(p);

		p.setPen(userpicBorderPen);
		p.setBrush(Qt::NoBrush);
		p.drawEllipse(userpicEllipse);

		p.setPen(iconBorderPen);
		p.setBrush(st::contactsPhotoDisabledCheckFg);
		p.drawEllipse(iconEllipse);
	}

	st::contactsPhotoCheckbox.check.check.paint(p, iconEllipse.topLeft(), outerWidth);
}

void CalendarBox::Inner::paintRows(Painter &p, QRect clip) {
	p.setFont(st::calendarDaysFont);
	auto ms = getms();
	auto y = rowsTop();
	auto index = -_context->daysShift();
	auto highlightedIndex = _context->highlightedIndex();
	for (auto row = 0, rowsCount = _context->rowsCount(), daysCount = _context->daysCount()
		; row != rowsCount
		; ++row, y += st::calendarCellSize.height()) {
		auto x = rowsLeft();
		if (!myrtlrect(x, y, st::calendarCellSize.width() * kDaysInWeek, st::calendarCellSize.height()).intersects(clip)) {
			index += kDaysInWeek;
			continue;
		}
		for (auto col = 0; col != kDaysInWeek; ++col, ++index, x += st::calendarCellSize.width()) {
			auto rect = myrtlrect(x, y, st::calendarCellSize.width(), st::calendarCellSize.height());
			auto grayedOut = (index < 0 || index >= daysCount || !rect.intersects(clip));
			auto highlighted = (index == highlightedIndex);
			auto enabled = _context->isEnabled(index);
			auto innerLeft = x + (st::calendarCellSize.width() - st::calendarCellInner) / 2;
			auto innerTop = y + (st::calendarCellSize.height() - st::calendarCellInner) / 2;
			if (highlighted) {
				PainterHighQualityEnabler hq(p);
				p.setPen(Qt::NoPen);
				p.setBrush(grayedOut ? st::windowBgOver : st::dialogsBgActive);
				p.drawEllipse(myrtlrect(innerLeft, innerTop, st::calendarCellInner, st::calendarCellInner));
				p.setBrush(Qt::NoBrush);
			}
			auto it = _ripples.find(index);
			if (it != _ripples.cend()) {
				auto colorOverride = [highlighted, grayedOut] {
					if (highlighted) {
						return grayedOut ? st::windowBgRipple : st::dialogsRippleBgActive;
					}
					return st::windowBgOver;
				};
				it->second->paint(p, innerLeft, innerTop, width(), ms, &(colorOverride()->c));
				if (it->second->empty()) {
					_ripples.erase(it);
				}
			}
			if (highlighted) {
				p.setPen(grayedOut ? st::windowSubTextFg : st::dialogsNameFgActive);
			} else if (enabled) {
				p.setPen(grayedOut ? st::windowSubTextFg : st::boxTextFg);
			} else {
				p.setPen(st::windowSubTextFg);
			}
			p.drawText(rect, _context->labelFromIndex(index), style::al_center);
		}
	}
}

void MultiSelect::Inner::Item::paintDeleteButton(Painter &p, int x, int y, int outerWidth, float64 overOpacity) {
	p.setOpacity(overOpacity);

	p.setPen(Qt::NoPen);
	p.setBrush(_color);
	{
		PainterHighQualityEnabler hq(p);
		p.drawEllipse(rtlrect(x, y, _st.height, _st.height, outerWidth));
	}

	CrossAnimation::paint(p, _st.deleteCross, _st.deleteFg, x, y, outerWidth, overOpacity);

	p.setOpacity(1.);
}

void HistoryPhoto::drawGrouped(
		Painter &p,
		const QRect &clip,
		TextSelection selection,
		crl::time ms,
		const QRect &geometry,
		RectParts corners,
		not_null<uint64*> cacheKey,
		not_null<QPixmap*> cache) const {
	_data->automaticLoad(_realParent->fullId(), _parent->data());

	validateGroupedCache(geometry, corners, cacheKey, cache);

	const auto selected = (selection == FullSelection);
	const auto loaded = _data->loaded();
	const auto displayLoading = _data->displayLoading();
	const auto bubble = _parent->hasBubble();

	if (displayLoading) {
		ensureAnimation();
		if (!_animation->radial.animating()) {
			_animation->radial.start(_data->progress());
		}
	}
	const auto radial = isRadialAnimation();

	if (!bubble) {
//		App::roundShadow(p, 0, 0, paintw, painth, selected ? st::msgInShadowSelected : st::msgInShadow, selected ? InSelectedShadowCorners : InShadowCorners);
	}
	p.drawPixmap(geometry.topLeft(), *cache);
	if (selected) {
		const auto roundRadius = ImageRoundRadius::Large;
		App::complexOverlayRect(p, geometry, roundRadius, corners);
	}

	const auto displayState = radial
		|| (!loaded && !_data->loading())
		|| _data->waitingForAlbum();
	if (displayState) {
		const auto radialOpacity = radial
			? _animation->radial.opacity()
			: 1.;
		const auto backOpacity = (loaded && !_data->uploading())
			? radialOpacity
			: 1.;
		const auto radialSize = st::historyGroupRadialSize;
		const auto inner = QRect(
			geometry.x() + (geometry.width() - radialSize) / 2,
			geometry.y() + (geometry.height() - radialSize) / 2,
			radialSize,
			radialSize);
		p.setPen(Qt::NoPen);
		if (selected) {
			p.setBrush(st::msgDateImgBgSelected);
		} else if (isThumbAnimation()) {
			auto over = _animation->a_thumbOver.value(1.);
			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
		} else {
			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
			p.setBrush(over ? st::msgDateImgBgOver : st::msgDateImgBg);
		}

		p.setOpacity(backOpacity * p.opacity());

		{
			PainterHighQualityEnabler hq(p);
			p.drawEllipse(inner);
		}

		const auto icon = [&]() -> const style::icon* {
			if (_data->waitingForAlbum()) {
				return &(selected ? st::historyFileThumbWaitingSelected : st::historyFileThumbWaiting);
			} else if (radial || _data->loading()) {
				if (_data->uploading()
					|| _data->large()->location().valid()) {
					return &(selected ? st::historyFileThumbCancelSelected : st::historyFileThumbCancel);
				}
				return nullptr;
			}
			return &(selected ? st::historyFileThumbDownloadSelected : st::historyFileThumbDownload);
		}();
		const auto previous = [&]() -> const style::icon* {
			if (_data->waitingForAlbum()) {
				return &(selected ? st::historyFileThumbCancelSelected : st::historyFileThumbCancel);
			}
			return nullptr;
		}();
		p.setOpacity(backOpacity);
		if (icon) {
			if (previous && radialOpacity > 0. && radialOpacity < 1.) {
				PaintInterpolatedIcon(p, *icon, *previous, radialOpacity, inner);
			} else {
				icon->paintInCenter(p, inner);
			}
		}
		p.setOpacity(1);
		if (radial) {
			const auto line = st::historyGroupRadialLine;
			const auto rinner = inner.marginsRemoved({ line, line, line, line });
			const auto color = selected
//.........这里部分代码省略.........

void HistoryPhoto::draw(Painter &p, const QRect &r, TextSelection selection, crl::time ms) const {
	if (width() < st::msgPadding.left() + st::msgPadding.right() + 1) return;

	_data->automaticLoad(_realParent->fullId(), _parent->data());
	auto selected = (selection == FullSelection);
	auto loaded = _data->loaded();
	auto displayLoading = _data->displayLoading();

	auto inWebPage = (_parent->media() != this);
	auto paintx = 0, painty = 0, paintw = width(), painth = height();
	auto bubble = _parent->hasBubble();

	auto captionw = paintw - st::msgPadding.left() - st::msgPadding.right();

	if (displayLoading) {
		ensureAnimation();
		if (!_animation->radial.animating()) {
			_animation->radial.start(_data->progress());
		}
	}
	const auto radial = isRadialAnimation();

	auto rthumb = rtlrect(paintx, painty, paintw, painth, width());
	if (_serviceWidth > 0) {
		const auto pix = [&] {
			if (loaded) {
				return _data->large()->pixCircled(_realParent->fullId(), _pixw, _pixh);
			} else if (_data->thumbnail()->loaded()) {
				return _data->thumbnail()->pixBlurredCircled(_realParent->fullId(), _pixw, _pixh);
			} else if (_data->thumbnailSmall()->loaded()) {
				return _data->thumbnailSmall()->pixBlurredCircled(_realParent->fullId(), _pixw, _pixh);
			} else if (const auto blurred = _data->thumbnailInline()) {
				return blurred->pixBlurredCircled(_realParent->fullId(), _pixw, _pixh);
			} else {
				return QPixmap();
			}
		}();
		p.drawPixmap(rthumb.topLeft(), pix);
	} else {
		if (bubble) {
			if (!_caption.isEmpty()) {
				painth -= st::mediaCaptionSkip + _caption.countHeight(captionw);
				if (isBubbleBottom()) {
					painth -= st::msgPadding.bottom();
				}
				rthumb = rtlrect(paintx, painty, paintw, painth, width());
			}
		} else {
			App::roundShadow(p, 0, 0, paintw, painth, selected ? st::msgInShadowSelected : st::msgInShadow, selected ? InSelectedShadowCorners : InShadowCorners);
		}
		auto inWebPage = (_parent->media() != this);
		auto roundRadius = inWebPage ? ImageRoundRadius::Small : ImageRoundRadius::Large;
		auto roundCorners = inWebPage ? RectPart::AllCorners : ((isBubbleTop() ? (RectPart::TopLeft | RectPart::TopRight) : RectPart::None)
			| ((isBubbleBottom() && _caption.isEmpty()) ? (RectPart::BottomLeft | RectPart::BottomRight) : RectPart::None));
		const auto pix = [&] {
			if (loaded) {
				return _data->large()->pixSingle(_realParent->fullId(), _pixw, _pixh, paintw, painth, roundRadius, roundCorners);
			} else if (_data->thumbnail()->loaded()) {
				return _data->thumbnail()->pixBlurredSingle(_realParent->fullId(), _pixw, _pixh, paintw, painth, roundRadius, roundCorners);
			} else if (_data->thumbnailSmall()->loaded()) {
				return _data->thumbnailSmall()->pixBlurredSingle(_realParent->fullId(), _pixw, _pixh, paintw, painth, roundRadius, roundCorners);
			} else if (const auto blurred = _data->thumbnailInline()) {
				return blurred->pixBlurredSingle(_realParent->fullId(), _pixw, _pixh, paintw, painth, roundRadius, roundCorners);
			} else {
				return QPixmap();
			}
		}();
		p.drawPixmap(rthumb.topLeft(), pix);
		if (selected) {
			App::complexOverlayRect(p, rthumb, roundRadius, roundCorners);
		}
	}
	if (radial || (!loaded && !_data->loading())) {
		const auto radialOpacity = (radial && loaded && !_data->uploading())
			? _animation->radial.opacity() :
			1.;
		QRect inner(rthumb.x() + (rthumb.width() - st::msgFileSize) / 2, rthumb.y() + (rthumb.height() - st::msgFileSize) / 2, st::msgFileSize, st::msgFileSize);
		p.setPen(Qt::NoPen);
		if (selected) {
			p.setBrush(st::msgDateImgBgSelected);
		} else if (isThumbAnimation()) {
			auto over = _animation->a_thumbOver.value(1.);
			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
		} else {
			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
			p.setBrush(over ? st::msgDateImgBgOver : st::msgDateImgBg);
		}

		p.setOpacity(radialOpacity * p.opacity());

		{
			PainterHighQualityEnabler hq(p);
			p.drawEllipse(inner);
		}

		p.setOpacity(radialOpacity);
		auto icon = [&]() -> const style::icon* {
			if (radial || _data->loading()) {
				if (_data->uploading()
					|| _data->large()->location().valid()) {
//.........这里部分代码省略.........

void RoundImageCheckbox::paint(Painter &p, uint64 ms, int x, int y, int outerWidth) {
	_selection.step(ms);
	for (auto &icon : _icons) {
		icon.fadeIn.step(ms);
		icon.fadeOut.step(ms);
	}
	removeFadeOutedIcons();

	auto selectionLevel = _selection.current(_checked ? 1. : 0.);
	if (_selection.animating()) {
		auto userpicRadius = qRound(kWideScale * (_st.imageRadius + (_st.imageSmallRadius - _st.imageRadius) * selectionLevel));
		auto userpicShift = kWideScale * _st.imageRadius - userpicRadius;
		auto userpicLeft = x - (kWideScale - 1) * _st.imageRadius + userpicShift;
		auto userpicTop = y - (kWideScale - 1) * _st.imageRadius + userpicShift;
		auto to = QRect(userpicLeft, userpicTop, userpicRadius * 2, userpicRadius * 2);
		auto from = QRect(QPoint(0, 0), _wideCache.size());

		p.setRenderHint(QPainter::SmoothPixmapTransform, true);
		p.drawPixmapLeft(to, outerWidth, _wideCache, from);
		p.setRenderHint(QPainter::SmoothPixmapTransform, false);
	} else {
		if (!_wideCache.isNull()) {
			_wideCache = QPixmap();
		}
		auto userpicRadius = _checked ? _st.imageSmallRadius : _st.imageRadius;
		auto userpicShift = _st.imageRadius - userpicRadius;
		auto userpicLeft = x + userpicShift;
		auto userpicTop = y + userpicShift;
		_paintRoundImage(p, userpicLeft, userpicTop, outerWidth, userpicRadius * 2);
	}

	if (selectionLevel > 0) {
		p.setRenderHint(QPainter::HighQualityAntialiasing, true);
		p.setOpacity(snap(selectionLevel, 0., 1.));
		p.setBrush(Qt::NoBrush);
		auto pen = _st.selectFg->p;
		pen.setWidth(_st.selectWidth);
		p.setPen(pen);
		p.drawEllipse(rtlrect(x, y, _st.imageRadius * 2, _st.imageRadius * 2, outerWidth));
		p.setOpacity(1.);
		p.setRenderHint(QPainter::HighQualityAntialiasing, false);
	}

	p.setRenderHint(QPainter::SmoothPixmapTransform, true);
	for (auto &icon : _icons) {
		auto fadeIn = icon.fadeIn.current(1.);
		auto fadeOut = icon.fadeOut.current(1.);
		auto iconRadius = qRound(kWideScale * (_st.checkSmallRadius + fadeOut * (_st.checkRadius - _st.checkSmallRadius)));
		auto iconShift = kWideScale * _st.checkRadius - iconRadius;
		auto iconLeft = x + 2 * _st.imageRadius + _st.selectWidth - 2 * _st.checkRadius - (kWideScale - 1) * _st.checkRadius + iconShift;
		auto iconTop = y + 2 * _st.imageRadius + _st.selectWidth - 2 * _st.checkRadius - (kWideScale - 1) * _st.checkRadius + iconShift;
		auto to = QRect(iconLeft, iconTop, iconRadius * 2, iconRadius * 2);
		auto from = QRect(QPoint(0, 0), _wideCheckFullCache.size());
		auto opacity = fadeIn * fadeOut;
		p.setOpacity(opacity);
		if (fadeOut < 1.) {
			p.drawPixmapLeft(to, outerWidth, icon.wideCheckCache, from);
		} else {
			auto divider = qRound((kWideScale - 2) * _st.checkRadius + fadeIn * 3 * _st.checkRadius);
			p.drawPixmapLeft(QRect(iconLeft, iconTop, divider, iconRadius * 2), outerWidth, _wideCheckFullCache, QRect(0, 0, divider * cIntRetinaFactor(), _wideCheckFullCache.height()));
			p.drawPixmapLeft(QRect(iconLeft + divider, iconTop, iconRadius * 2 - divider, iconRadius * 2), outerWidth, _wideCheckBgCache, QRect(divider * cIntRetinaFactor(), 0, _wideCheckBgCache.width() - divider * cIntRetinaFactor(), _wideCheckBgCache.height()));
		}
	}
	p.setRenderHint(QPainter::SmoothPixmapTransform, false);
	p.setOpacity(1.);
}

void HistoryVideo::draw(Painter &p, const QRect &r, TextSelection selection, TimeMs ms) const {
	if (width() < st::msgPadding.left() + st::msgPadding.right() + 1) return;

	_data->automaticLoad(_realParent->fullId(), _parent->data());
	bool loaded = _data->loaded(), displayLoading = _data->displayLoading();
	bool selected = (selection == FullSelection);

	auto paintx = 0, painty = 0, paintw = width(), painth = height();
	bool bubble = _parent->hasBubble();

	int captionw = paintw - st::msgPadding.left() - st::msgPadding.right();

	if (displayLoading) {
		ensureAnimation();
		if (!_animation->radial.animating()) {
			_animation->radial.start(_data->progress());
		}
	}
	updateStatusText();
	bool radial = isRadialAnimation(ms);

	if (bubble) {
		if (!_caption.isEmpty()) {
			painth -= st::mediaCaptionSkip + _caption.countHeight(captionw);
			if (isBubbleBottom()) {
				painth -= st::msgPadding.bottom();
			}
		}
	} else {
		App::roundShadow(p, 0, 0, paintw, painth, selected ? st::msgInShadowSelected : st::msgInShadow, selected ? InSelectedShadowCorners : InShadowCorners);
	}

	auto inWebPage = (_parent->media() != this);
	auto roundRadius = inWebPage ? ImageRoundRadius::Small : ImageRoundRadius::Large;
	auto roundCorners = inWebPage ? RectPart::AllCorners : ((isBubbleTop() ? (RectPart::TopLeft | RectPart::TopRight) : RectPart::None)
		| ((isBubbleBottom() && _caption.isEmpty()) ? (RectPart::BottomLeft | RectPart::BottomRight) : RectPart::None));
	QRect rthumb(rtlrect(paintx, painty, paintw, painth, width()));

	const auto good = _data->goodThumbnail();
	if (good && good->loaded()) {
		p.drawPixmap(rthumb.topLeft(), good->pixSingle({}, _thumbw, _thumbh, paintw, painth, roundRadius, roundCorners));
	} else {
		if (good) {
			good->load({});
		}
		p.drawPixmap(rthumb.topLeft(), _data->thumb->pixBlurredSingle(_realParent->fullId(), _thumbw, _thumbh, paintw, painth, roundRadius, roundCorners));
	}
	if (selected) {
		App::complexOverlayRect(p, rthumb, roundRadius, roundCorners);
	}

	QRect inner(rthumb.x() + (rthumb.width() - st::msgFileSize) / 2, rthumb.y() + (rthumb.height() - st::msgFileSize) / 2, st::msgFileSize, st::msgFileSize);
	p.setPen(Qt::NoPen);
	if (selected) {
		p.setBrush(st::msgDateImgBgSelected);
	} else if (isThumbAnimation(ms)) {
		auto over = _animation->a_thumbOver.current();
		p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
	} else {
		bool over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
		p.setBrush(over ? st::msgDateImgBgOver : st::msgDateImgBg);
	}

	{
		PainterHighQualityEnabler hq(p);
		p.drawEllipse(inner);
	}

	if (!selected && _animation) {
		p.setOpacity(1);
	}

	auto icon = ([this, radial, selected, loaded]() -> const style::icon * {
		if (loaded && !radial) {
			return &(selected ? st::historyFileThumbPlaySelected : st::historyFileThumbPlay);
		} else if (radial || _data->loading()) {
			if (_parent->data()->id > 0 || _data->uploading()) {
				return &(selected ? st::historyFileThumbCancelSelected : st::historyFileThumbCancel);
			}
			return nullptr;
		}
		return &(selected ? st::historyFileThumbDownloadSelected : st::historyFileThumbDownload);
	})();
	if (icon) {
		icon->paintInCenter(p, inner);
	}
	if (radial) {
		QRect rinner(inner.marginsRemoved(QMargins(st::msgFileRadialLine, st::msgFileRadialLine, st::msgFileRadialLine, st::msgFileRadialLine)));
		_animation->radial.draw(p, rinner, st::msgFileRadialLine, selected ? st::historyFileThumbRadialFgSelected : st::historyFileThumbRadialFg);
	}

	auto statusX = paintx + st::msgDateImgDelta + st::msgDateImgPadding.x(), statusY = painty + st::msgDateImgDelta + st::msgDateImgPadding.y();
	auto statusW = st::normalFont->width(_statusText) + 2 * st::msgDateImgPadding.x();
	auto statusH = st::normalFont->height + 2 * st::msgDateImgPadding.y();
	App::roundRect(p, rtlrect(statusX - st::msgDateImgPadding.x(), statusY - st::msgDateImgPadding.y(), statusW, statusH, width()), selected ? st::msgDateImgBgSelected : st::msgDateImgBg, selected ? DateSelectedCorners : DateCorners);
	p.setFont(st::normalFont);
	p.setPen(st::msgDateImgFg);
	p.drawTextLeft(statusX, statusY, width(), _statusText, statusW - 2 * st::msgDateImgPadding.x());

	// date
//.........这里部分代码省略.........