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Write more DPI logs.

This commit is contained in:
John Preston 2023-01-05 14:43:13 +04:00
parent 6467ba7739
commit 3532e187fd
1 changed files with 36 additions and 29 deletions
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65
Telegram/SourceFiles/core/sandbox.cpp
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@ -32,6 +32,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
#include <QtCore/QLockFile>
#include <QtGui/QSessionManager>
#include <QtGui/QScreen>
#include <QtGui/qpa/qplatformscreen.h>
namespace Core {
namespace {
@ -210,38 +211,44 @@ void Sandbox::launchApplication() {
}
void Sandbox::setupScreenScale() {
const auto dpi = Sandbox::primaryScreen()->logicalDotsPerInch();
LOG(("Primary screen DPI: %1").arg(dpi));
if (dpi <= 108) {
cSetScreenScale(100); // 100%: 96 DPI (0-108)
} else if (dpi <= 132) {
cSetScreenScale(125); // 125%: 120 DPI (108-132)
} else if (dpi <= 168) {
cSetScreenScale(150); // 150%: 144 DPI (132-168)
} else if (dpi <= 216) {
cSetScreenScale(200); // 200%: 192 DPI (168-216)
} else if (dpi <= 264) {
cSetScreenScale(250); // 250%: 240 DPI (216-264)
} else {
cSetScreenScale(300); // 300%: 288 DPI (264-inf)
}
const auto ratio = devicePixelRatio();
if (ratio > 1.) {
if (!Platform::IsMac() || (ratio != 2.)) {
LOG(("Found non-trivial Device Pixel Ratio: %1").arg(ratio));
LOG(("Environmental variables: QT_DEVICE_PIXEL_RATIO='%1'").arg(qEnvironmentVariable("QT_DEVICE_PIXEL_RATIO")));
LOG(("Environmental variables: QT_SCALE_FACTOR='%1'").arg(qEnvironmentVariable("QT_SCALE_FACTOR")));
LOG(("Environmental variables: QT_AUTO_SCREEN_SCALE_FACTOR='%1'").arg(qEnvironmentVariable("QT_AUTO_SCREEN_SCALE_FACTOR")));
LOG(("Environmental variables: QT_SCREEN_SCALE_FACTORS='%1'").arg(qEnvironmentVariable("QT_SCREEN_SCALE_FACTORS")));
}
style::SetDevicePixelRatio(std::ceil(ratio));
if (Platform::IsMac() && ratio == 2.) {
cSetScreenScale(110); // 110% for Retina screens by default.
} else {
cSetScreenScale(style::kScaleDefault);
LOG(("Global devicePixelRatio: %1").arg(ratio));
const auto logEnv = [](const char *name) {
const auto value = qEnvironmentVariable(name);
if (!value.isEmpty()) {
LOG(("%1: %2").arg(name).arg(value));
}
};
logEnv("QT_DEVICE_PIXEL_RATIO");
logEnv("QT_AUTO_SCREEN_SCALE_FACTOR");
logEnv("QT_ENABLE_HIGHDPI_SCALING");
logEnv("QT_SCALE_FACTOR");
logEnv("QT_SCREEN_SCALE_FACTORS");
logEnv("QT_SCALE_FACTOR_ROUNDING_POLICY");
logEnv("QT_DPI_ADJUSTMENT_POLICY");
logEnv("QT_USE_PHYSICAL_DPI");
logEnv("QT_FONT_DPI");
const auto useRatio = std::clamp(qCeil(ratio), 1, 3);
style::SetDevicePixelRatio(useRatio);
const auto screen = Sandbox::primaryScreen();
const auto dpi = screen->logicalDotsPerInch();
const auto basePair = screen->handle()->logicalBaseDpi();
const auto base = (basePair.first + basePair.second) * 0.5;
const auto screenScaleExact = dpi / base;
const auto screenScale = int(base::SafeRound(screenScaleExact * 4)) * 25;
LOG(("Primary screen DPI: %1, Base: %2.").arg(dpi).arg(base));
LOG(("Computed screen scale: %1").arg(screenScale));
if (Platform::IsMac()) {
// 110% for Retina screens by default.
cSetScreenScale((useRatio == 2) ? 110 : 100);
} else {
const auto clamped = std::clamp(screenScale, 50 * useRatio, 300);
cSetScreenScale(int(base::SafeRound(clamped * 1. / useRatio)));
}
LOG(("DevicePixelRatio: %1").arg(useRatio));
LOG(("ScreenScale: %1").arg(cScreenScale()));
}
Sandbox::~Sandbox() = default;