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Implemented calculation of chart height in stack chart view.

This commit is contained in:
23rd 2023-08-28 01:17:30 +03:00 committed by John Preston
parent b55d2008c0
commit 2ddc1ee2e1
2 changed files with 36 additions and 1 deletions
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29
Telegram/SourceFiles/statistics/view/stack_chart_view.cpp
View File

@ -7,6 +7,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "statistics/view/stack_chart_view.h"
#include "data/data_statistics.h"
namespace Statistic {
namespace {
} // namespace
@ -52,7 +54,32 @@ float64 StackChartView::alpha(int id) const {
AbstractChartView::HeightLimits StackChartView::heightLimits(
Data::StatisticalChart &chartData,
Limits xIndices) {
return {};
if (_cachedHeightLimits.ySum.empty()) {
_cachedHeightLimits.ySum.reserve(chartData.x.size());
auto maxValueFull = 0;
for (auto i = 0; i < chartData.x.size(); i++) {
auto sum = 0;
for (const auto &line : chartData.lines) {
if (isEnabled(line.id)) {
sum += line.y[i];
}
}
_cachedHeightLimits.ySum.push_back(sum);
maxValueFull = std::max(sum, maxValueFull);
}
_cachedHeightLimits.ySumSegmentTree = SegmentTree(
_cachedHeightLimits.ySum);
_cachedHeightLimits.full = { 0., float64(maxValueFull) };
}
const auto max = _cachedHeightLimits.ySumSegmentTree.rMaxQ(
xIndices.min,
xIndices.max);
return {
.full = _cachedHeightLimits.full,
.ranged = { 0., float64(max) },
};
}
void StackChartView::tick(crl::time now) {

8
Telegram/SourceFiles/statistics/view/stack_chart_view.h
View File

@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "statistics/segment_tree.h"
#include "statistics/statistics_common.h"
#include "statistics/view/abstract_chart_view.h"
@ -51,6 +52,13 @@ public:
void tick(crl::time now) override;
private:
struct {
Limits full;
std::vector<int> ySum;
SegmentTree ySumSegmentTree;
} _cachedHeightLimits;
};
} // namespace Statistic