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fix: gtk app scaled size too big

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GDK_SCALE 缩放 UI
GDK_DPI_SCALE 缩放字体，

Isuee: https://github.com/linuxdeepin/developer-center/issues/7528
This commit is contained in:
ck 2024-03-18 16:16:17 +08:00 committed by mike
parent 77f927e308
commit f3134f7609
1 changed files with 10 additions and 1 deletions
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11
src/dbus/applicationservice.cpp
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@ -54,7 +54,7 @@ void ApplicationService::appendExtraEnvironments(QVariantMap &runtimeOptions) co
QString oldEnv;
// scale factor
// NOTE: Use QT_SCREEN_SCALE_FACTOR in multi-monitor situations, as this feature may be added in the future
static QStringList scaleEnvs{"DEEPIN_WINE_SCALE=%1;", "GDK_DPI_SCALE=%1;", "QT_SCREEN_SCALE_FACTOR=%1;", "GDK_SCALE=%1;"};
static QStringList scaleEnvs{"DEEPIN_WINE_SCALE=%1;", "QT_SCREEN_SCALE_FACTOR=%1;"};
auto factor = scaleFactor();
if (auto it = runtimeOptions.find("env"); it != runtimeOptions.cend()) {
oldEnv = it->value<QString>();
@ -64,6 +64,15 @@ void ApplicationService::appendExtraEnvironments(QVariantMap &runtimeOptions) co
oldEnv.append(env.arg(factor));
}
// FIX #7528 GTK app only scale the UI, not scaling of text.
// GDK_SCALE Must be set to an integer, see https://docs.gtk.org/gtk3/x11.html
// 1.25 ==> 1 , 1.75 ==>2
int scale = qRound(factor);
oldEnv.append(QString("GDK_SCALE=%1;").arg(scale));
if (scale > 0) { // avoid division by 0
oldEnv.append(QString("GDK_DPI_SCALE=%1;").arg(qreal(1.0 / scale)));
}
// GIO
oldEnv.append(QString{"GIO_LAUNCHED_DESKTOP_FILE=%1;"}.arg(m_desktopSource.sourcePath()));