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Cached both main and footer charts in single linear chart view.

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This commit is contained in:
23rd
2023-07-27 01:49:53 +03:00
committed by John Preston
parent 2055cc70d1
commit 25c97a3ee8
4 changed files with 36 additions and 37 deletions
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Telegram/SourceFiles/statistics/linear_chart_view.cpp
+17 -17
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@@ -64,7 +64,8 @@ void LinearChartView::paint(
const Limits &xPercentageLimits,
const Limits &heightLimits,
const QRect &rect,
DetailsPaintContext &detailsPaintContext) {
DetailsPaintContext &detailsPaintContext,
bool footer) {
const auto cacheToken = LinearChartView::CacheToken(
xIndices,
@@ -72,42 +73,38 @@ void LinearChartView::paint(
heightLimits,
rect.size());
const auto imageSize = rect.size() * style::DevicePixelRatio();
const auto cacheScale = 1. / style::DevicePixelRatio();
auto &caches = (footer ? _footerCaches : _mainCaches);
for (auto i = 0; i < chartData.lines.size(); i++) {
const auto &line = chartData.lines[i];
p.setOpacity(alpha(line.id));
if (!p.opacity()) {
continue;
}
if (p.opacity() < 1.) {
// p.setRenderHint(QPainter::Antialiasing, false);
}
////
auto &cache = _caches[line.id];
auto &cache = caches[line.id];
const auto isSameToken = (cache.lastToken == cacheToken);
if (isSameToken && cache.hq) {
if ((isSameToken && cache.hq)
|| (p.opacity() < 1. && !isEnabled(line.id))) {
p.drawImage(rect.topLeft(), cache.image);
continue;
}
const auto ratio = style::DevicePixelRatio();
cache.hq = isSameToken;
auto image = QImage();
image = QImage(
rect.size() * style::DevicePixelRatio() * (isSameToken ? 1. : ratio),
imageSize * (isSameToken ? 1. : cacheScale),
QImage::Format_ARGB32_Premultiplied);
image.setDevicePixelRatio(style::DevicePixelRatio());
image.fill(Qt::transparent);
// image.fill(Qt::darkRed);
{
auto imagePainter = QPainter(&image);
imagePainter.setRenderHint(QPainter::Antialiasing, true);
if (isSameToken) {
// PainterHighQualityEnabler hp(imagePainter);
} else {
imagePainter.scale(ratio, ratio);
auto hq = PainterHighQualityEnabler(imagePainter);
if (!isSameToken) {
imagePainter.scale(cacheScale, cacheScale);
}
////
PaintChartLine(
imagePainter,
@@ -120,7 +117,10 @@ void LinearChartView::paint(
}
if (!isSameToken) {
image = image.scaled(rect.size() * style::DevicePixelRatio(), Qt::IgnoreAspectRatio, Qt::FastTransformation);
image = image.scaled(
imageSize,
Qt::IgnoreAspectRatio,
Qt::FastTransformation);
}
p.drawImage(rect.topLeft(), image);
cache.lastToken = cacheToken;