142 lines
3.8 KiB
C++
142 lines
3.8 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "statistics/view/chart_horizontal_lines_view.h"
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#include "data/data_statistics.h"
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#include "statistics/statistics_common.h"
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#include "styles/style_statistics.h"
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namespace Statistic {
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ChartHorizontalLinesView::ChartHorizontalLinesView() = default;
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void ChartHorizontalLinesView::setChartData(
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const Data::StatisticalChart &chartData,
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ChartViewType type) {
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_horizontalLines.clear();
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_isDouble = (type == ChartViewType::DoubleLinear);
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if (_isDouble && (chartData.lines.size() == 2)) {
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_leftPen = QPen(chartData.lines.front().color);
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_rightPen = QPen(chartData.lines.back().color);
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const auto firstMax = chartData.lines.front().maxValue;
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const auto secondMax = chartData.lines.back().maxValue;
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if (firstMax > secondMax) {
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_isLeftLineScaled = false;
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_scaledLineRatio = firstMax / float64(secondMax);
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} else {
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_isLeftLineScaled = true;
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_scaledLineRatio = secondMax / float64(firstMax);
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}
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}
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}
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void ChartHorizontalLinesView::paintHorizontalLines(
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QPainter &p,
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const QRect &r) {
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for (auto &horizontalLine : _horizontalLines) {
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const auto alpha = p.opacity();
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p.setOpacity(horizontalLine.alpha);
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for (const auto &line : horizontalLine.lines) {
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const auto lineRect = QRect(
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0,
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r.y() + r.height() * line.relativeValue,
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r.x() + r.width(),
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st::lineWidth);
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p.fillRect(lineRect, st::windowSubTextFg);
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}
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p.setOpacity(alpha);
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}
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}
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void ChartHorizontalLinesView::paintCaptionsToHorizontalLines(
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QPainter &p,
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const QRect &r) {
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const auto offset = r.y() - st::statisticsChartHorizontalLineCaptionSkip;
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p.setFont(st::statisticsDetailsBottomCaptionStyle.font);
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for (auto &horizontalLine : _horizontalLines) {
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const auto alpha = p.opacity();
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p.setOpacity(horizontalLine.alpha);
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for (const auto &line : horizontalLine.lines) {
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const auto y = offset + r.height() * line.relativeValue;
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p.setPen(_isDouble ? _leftPen : st::windowSubTextFg);
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p.drawText(
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0,
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y,
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(!_isDouble)
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? line.caption
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: _isLeftLineScaled
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? line.scaledLineCaption
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: line.caption);
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if (_isDouble) {
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p.setPen(_rightPen);
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p.drawText(
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r.width() - line.rightCaptionWidth,
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y,
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_isLeftLineScaled
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? line.caption
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: line.scaledLineCaption);
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}
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}
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p.setOpacity(alpha);
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}
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}
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void ChartHorizontalLinesView::computeRelative(
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int newMaxHeight,
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int newMinHeight) {
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for (auto &horizontalLine : _horizontalLines) {
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horizontalLine.computeRelative(newMaxHeight, newMinHeight);
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}
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}
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void ChartHorizontalLinesView::setAlpha(float64 value) {
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for (auto &horizontalLine : _horizontalLines) {
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horizontalLine.alpha = horizontalLine.fixedAlpha * (1. - value);
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}
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_horizontalLines.back().alpha = value;
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if (value == 1.) {
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while (_horizontalLines.size() > 1) {
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const auto startIt = begin(_horizontalLines);
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if (!startIt->alpha) {
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_horizontalLines.erase(startIt);
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} else {
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break;
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}
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}
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}
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}
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void ChartHorizontalLinesView::add(Limits newHeight, bool animated) {
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auto newLinesData = ChartHorizontalLinesData(
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newHeight.max,
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newHeight.min,
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true,
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_isDouble ? _scaledLineRatio : 0.);
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if (_isDouble) {
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const auto &font = st::statisticsDetailsBottomCaptionStyle.font;
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for (auto &line : newLinesData.lines) {
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line.rightCaptionWidth = font->width(_isLeftLineScaled
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? line.caption
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: line.scaledLineCaption);
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}
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}
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if (!animated) {
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_horizontalLines.clear();
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}
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for (auto &horizontalLine : _horizontalLines) {
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horizontalLine.fixedAlpha = horizontalLine.alpha;
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}
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_horizontalLines.push_back(newLinesData);
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if (!animated) {
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_horizontalLines.back().alpha = 1.;
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}
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}
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} // namespace Statistic
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