C++ Painter::drawPixmap方法代码示例

void paintUnreadBadge(Painter &p, const QRect &rect, const UnreadBadgeStyle &st) {
	t_assert(rect.height() == st.size);

	int index = (st.muted ? 0x03 : 0x00) + (st.active ? 0x02 : (st.selected ? 0x01 : 0x00));
	int size = st.size, sizehalf = size / 2;

	unreadBadgeStyle.createIfNull();
	auto badgeData = unreadBadgeStyle->sizes;
	if (st.sizeId > 0) {
		t_assert(st.sizeId < UnreadBadgeSizesCount);
		badgeData = &unreadBadgeStyle->sizes[st.sizeId];
	}
	auto bg = unreadBadgeStyle->bg[index];
	if (badgeData->left[index].isNull()) {
		int imgsize = size * cIntRetinaFactor(), imgsizehalf = sizehalf * cIntRetinaFactor();
		createCircleMask(badgeData, size);
		badgeData->left[index] = App::pixmapFromImageInPlace(colorizeCircleHalf(badgeData, imgsize, imgsizehalf, 0, bg));
		badgeData->right[index] = App::pixmapFromImageInPlace(colorizeCircleHalf(badgeData, imgsize, imgsizehalf, imgsize - imgsizehalf, bg));
	}

	int bar = rect.width() - 2 * sizehalf;
	p.drawPixmap(rect.x(), rect.y(), badgeData->left[index]);
	if (bar) {
		p.fillRect(rect.x() + sizehalf, rect.y(), bar, rect.height(), bg);
	}
	p.drawPixmap(rect.x() + sizehalf + bar, rect.y(), badgeData->right[index]);
}

bool FadeAnimation::paint(Painter &p) {
	if (_cache.isNull()) return false;

	const auto cache = _cache;
	auto opacity = _animation.value(_visible ? 1. : 0.);
	p.setOpacity(opacity);
	if (_scale < 1.) {
		PainterHighQualityEnabler hq(p);
		auto targetRect = QRect(
			(1 - kWideScale) / 2 * _size.width(),
			(1 - kWideScale) / 2 * _size.height(),
			kWideScale * _size.width(),
			kWideScale * _size.height());
		auto scale = opacity + (1. - opacity) * _scale;
		auto shownWidth = anim::interpolate(
			(1 - kWideScale) / 2 * _size.width(),
			0,
			scale);
		auto shownHeight = anim::interpolate(
			(1 - kWideScale) / 2 * _size.height(),
			0,
			scale);
		auto margins = QMargins(
			shownWidth,
			shownHeight,
			shownWidth,
			shownHeight);
		p.drawPixmap(targetRect.marginsAdded(margins), cache);
	} else {
		p.drawPixmap(0, 0, cache);
	}
	return true;
}

void SlideAnimation::paintFrame(Painter &p, int x, int y, int outerWidth) {
	auto dt = _animation.value(1.);
	if (!animating()) return;

	auto easeOut = anim::easeOutCirc(1., dt);
	auto easeIn = anim::easeInCirc(1., dt);
	auto arrivingAlpha = easeIn;
	auto departingAlpha = 1. - easeOut;
	auto leftCoord = (_slideLeft ? anim::interpolate(-_leftSnapshotWidth, 0, easeOut) : anim::interpolate(0, -_leftSnapshotWidth, easeIn));
	auto leftAlpha = (_slideLeft ? arrivingAlpha : departingAlpha);
	auto rightCoord = (_slideLeft ? anim::interpolate(0, _rightSnapshotWidth, easeIn) : anim::interpolate(_rightSnapshotWidth, 0, easeOut));
	auto rightAlpha = (_slideLeft ? departingAlpha : arrivingAlpha);

	if (_overflowHidden) {
		auto leftWidth = (_leftSnapshotWidth + leftCoord);
		if (leftWidth > 0) {
			p.setOpacity(leftAlpha);
			p.drawPixmap(x, y, leftWidth, _leftSnapshotHeight, _leftSnapshot, (_leftSnapshot.width() - leftWidth * cIntRetinaFactor()), 0, leftWidth * cIntRetinaFactor(), _leftSnapshot.height());
		}
		auto rightWidth = _rightSnapshotWidth - rightCoord;
		if (rightWidth > 0) {
			p.setOpacity(rightAlpha);
			p.drawPixmap(x + rightCoord, y, _rightSnapshot, 0, 0, rightWidth * cIntRetinaFactor(), _rightSnapshot.height());
		}
	} else {
		p.setOpacity(leftAlpha);
		p.drawPixmap(x + leftCoord, y, _leftSnapshot);
		p.setOpacity(rightAlpha);
		p.drawPixmap(x + rightCoord, y, _rightSnapshot);
	}
}

void PeerData::paintUserpicSquare(Painter &p, int x, int y, int size) const {
	if (auto userpic = currentUserpic()) {
		p.drawPixmap(x, y, userpic->pix(size, size));
	} else {
		_userpicEmpty->paintSquare(p, x, y, x + size + x, size);
	}
}

void PeerData::paintUserpicRounded(Painter &p, int x, int y, int size) const {
	if (auto userpic = currentUserpic()) {
		p.drawPixmap(x, y, userpic->pixRounded(size, size, ImageRoundRadius::Small));
	} else {
		_userpicEmpty->paintRounded(p, x, y, x + size + x, size);
	}
}

bool MultiSelect::Inner::Item::paintCached(Painter &p, int x, int y, int outerWidth) {
	PainterHighQualityEnabler hq(p);

	auto opacity = _visibility.current(_hiding ? 0. : 1.);
	auto scale = opacity + _st.minScale * (1. - opacity);
	auto height = opacity * _cache.height() / _cache.devicePixelRatio();
	auto width = opacity * _cache.width() / _cache.devicePixelRatio();

	p.setOpacity(opacity);
	p.drawPixmap(rtlrect(x + (_width - width) / 2., y + (_st.height - height) / 2., width, height, outerWidth), _cache);
	p.setOpacity(1.);
	return true;
}

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 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.........