/* This file is part of Telegram Desktop, the official desktop application for the Telegram messaging service. For license and copyright information please follow this link: https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL */ #include "ui/effects/cross_animation.h" namespace Ui { namespace { constexpr auto kPointCount = 12; // // 1 3 // X X X X // X X X X // 0 X X 4 // X X X X // X 2 X // X X // X X // 11 5 // X X // X X // X 8 X // X X X X // 10 X X 6 // X X X X // X X X X // 9 7 // void transformLoadingCross(float64 loading, std::array &points, int &paintPointsCount) { auto moveTo = [](QPointF &point, QPointF &to, float64 ratio) { point = point * (1. - ratio) + to * ratio; }; auto moveFrom = [](QPointF &point, QPointF &from, float64 ratio) { point = from * (1. - ratio) + point * ratio; }; auto paintPoints = [&points, &paintPointsCount](std::initializer_list &&indices) { auto index = 0; for (auto paintIndex : indices) { points[index++] = points[paintIndex]; } paintPointsCount = indices.size(); }; if (loading < 0.125) { auto ratio = loading / 0.125; moveTo(points[6], points[5], ratio); moveTo(points[7], points[8], ratio); } else if (loading < 0.25) { auto ratio = (loading - 0.125) / 0.125; moveTo(points[9], points[8], ratio); moveTo(points[10], points[11], ratio); paintPoints({ 0, 1, 2, 3, 4, 9, 10, 11 }); } else if (loading < 0.375) { auto ratio = (loading - 0.25) / 0.125; moveTo(points[0], points[11], ratio); moveTo(points[1], points[2], ratio); paintPoints({ 0, 1, 2, 3, 4, 8 }); } else if (loading < 0.5) { auto ratio = (loading - 0.375) / 0.125; moveTo(points[8], points[4], ratio); moveTo(points[11], points[3], ratio); paintPoints({ 3, 4, 8, 11 }); } else if (loading < 0.625) { auto ratio = (loading - 0.5) / 0.125; moveFrom(points[8], points[4], ratio); moveFrom(points[11], points[3], ratio); paintPoints({ 3, 4, 8, 11 }); } else if (loading < 0.75) { auto ratio = (loading - 0.625) / 0.125; moveFrom(points[6], points[5], ratio); moveFrom(points[7], points[8], ratio); paintPoints({ 3, 4, 5, 6, 7, 11 }); } else if (loading < 0.875) { auto ratio = (loading - 0.75) / 0.125; moveFrom(points[9], points[8], ratio); moveFrom(points[10], points[11], ratio); paintPoints({ 3, 4, 5, 6, 7, 8, 9, 10 }); } else { auto ratio = (loading - 0.875) / 0.125; moveFrom(points[0], points[11], ratio); moveFrom(points[1], points[2], ratio); } } } // namespace void CrossAnimation::paint(Painter &p, const style::CrossAnimation &st, style::color color, int x, int y, int outerWidth, float64 shown, float64 loading) { PainterHighQualityEnabler hq(p); auto sqrt2 = sqrt(2.); auto deleteScale = shown + st.minScale * (1. - shown); auto deleteSkip = (deleteScale * st.skip) + (1. - deleteScale) * (st.size / 2); auto deleteLeft = rtlpoint(x + deleteSkip, 0, outerWidth).x() + 0.; auto deleteTop = y + deleteSkip + 0.; auto deleteWidth = st.size - 2 * deleteSkip; auto deleteHeight = st.size - 2 * deleteSkip; auto deleteStroke = st.stroke / sqrt2; std::array pathDelete = { { { deleteLeft, deleteTop + deleteStroke }, { deleteLeft + deleteStroke, deleteTop }, { deleteLeft + (deleteWidth / 2.), deleteTop + (deleteHeight / 2.) - deleteStroke }, { deleteLeft + deleteWidth - deleteStroke, deleteTop }, { deleteLeft + deleteWidth, deleteTop + deleteStroke }, { deleteLeft + (deleteWidth / 2.) + deleteStroke, deleteTop + (deleteHeight / 2.) }, { deleteLeft + deleteWidth, deleteTop + deleteHeight - deleteStroke }, { deleteLeft + deleteWidth - deleteStroke, deleteTop + deleteHeight }, { deleteLeft + (deleteWidth / 2.), deleteTop + (deleteHeight / 2.) + deleteStroke }, { deleteLeft + deleteStroke, deleteTop + deleteHeight }, { deleteLeft, deleteTop + deleteHeight - deleteStroke }, { deleteLeft + (deleteWidth / 2.) - deleteStroke, deleteTop + (deleteHeight / 2.) }, } }; auto pathDeleteSize = kPointCount; auto loadingArcLength = 0; if (loading > 0.) { transformLoadingCross(loading, pathDelete, pathDeleteSize); auto loadingArc = (loading >= 0.5) ? (loading - 1.) : loading; loadingArcLength = qRound(-loadingArc * 2 * FullArcLength); } if (shown < 1.) { auto alpha = -(shown - 1.) * M_PI_2; auto cosalpha = cos(alpha); auto sinalpha = sin(alpha); auto shiftx = deleteLeft + (deleteWidth / 2.); auto shifty = deleteTop + (deleteHeight / 2.); for (auto &point : pathDelete) { auto x = point.x() - shiftx; auto y = point.y() - shifty; point.setX(shiftx + x * cosalpha - y * sinalpha); point.setY(shifty + y * cosalpha + x * sinalpha); } } QPainterPath path; path.moveTo(pathDelete[0]); for (int i = 1; i != pathDeleteSize; ++i) { path.lineTo(pathDelete[i]); } path.lineTo(pathDelete[0]); p.fillPath(path, color); if (loadingArcLength != 0) { auto loadingArcStart = FullArcLength / 8; auto roundSkip = (st.size * (1 - sqrt2) + 2 * sqrt2 * deleteSkip + st.stroke) / 2; auto roundPart = QRectF(x + roundSkip, y + roundSkip, st.size - 2 * roundSkip, st.size - 2 * roundSkip); if (shown < 1.) { loadingArcStart -= qRound(-(shown - 1.) * FullArcLength / 4.); } p.setBrush(Qt::NoBrush); auto pen = color->p; pen.setWidthF(st.stroke); pen.setCapStyle(Qt::RoundCap); p.setPen(pen); if (loadingArcLength < 0) { loadingArcStart += loadingArcLength; loadingArcLength = -loadingArcLength; } p.drawArc(roundPart, loadingArcStart, loadingArcLength); } } } // namespace Ui