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Bind translucent theme to background contrast rather than blur effect

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Only the background contrast effect provides real contrast for contents, the blur effect
doesn't improve readability that much; so we now use the translucent theme only when we
have the background contrast effect. This significantly improves readability.

CHANGELOG: An opaque theme is now used when only the blur effect is available
REVIEW: 124039
BUG: 342934
BUG: 348154
This commit is contained in:
Kai Uwe Broulik 2015-06-08 17:30:38 +02:00
parent afd962a15b
commit d65c0ed1d0
2 changed files with 14 additions and 18 deletions
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27
src/plasma/private/theme_p.cpp
View File

@ -39,7 +39,7 @@ const char ThemePrivate::themeRcFile[] = "plasmarc";
// these svgs do not follow the theme's colors, but rather the system colors
const char ThemePrivate::systemColorsTheme[] = "internal-system-colors";
#if HAVE_X11
EffectWatcher *ThemePrivate::s_blurEffectWatcher = 0;
EffectWatcher *ThemePrivate::s_backgroundContrastEffectWatcher = Q_NULLPTR;
#endif
ThemePrivate *ThemePrivate::globalTheme = 0;
@ -61,7 +61,7 @@ ThemePrivate::ThemePrivate(QObject *parent)
cachesToDiscard(NoCache),
locolor(false),
compositingActive(KWindowSystem::self()->compositingActive()),
blurActive(KWindowEffects::isEffectAvailable(KWindowEffects::BlurBehind)),
backgroundContrastActive(KWindowEffects::isEffectAvailable(KWindowEffects::BackgroundContrast)),
isDefault(true),
useGlobal(true),
hasWallpapers(false),
@ -95,12 +95,17 @@ ThemePrivate::ThemePrivate(QObject *parent)
if (QPixmap::defaultDepth() > 8) {
#if HAVE_X11
//watch for blur effect property changes as well
if (!s_blurEffectWatcher) {
s_blurEffectWatcher = new EffectWatcher("_KDE_NET_WM_BLUR_BEHIND_REGION");
//watch for background contrast effect property changes as well
if (!s_backgroundContrastEffectWatcher) {
s_backgroundContrastEffectWatcher = new EffectWatcher("_KDE_NET_WM_BACKGROUND_CONTRAST_REGION");
}
QObject::connect(s_blurEffectWatcher, SIGNAL(effectChanged(bool)), this, SLOT(blurBehindChanged(bool)));
QObject::connect(s_backgroundContrastEffectWatcher, &EffectWatcher::effectChanged, this, [this](bool active) {
if (backgroundContrastActive != active) {
backgroundContrastActive = active;
scheduleThemeChangeNotification(PixmapCache | SvgElementsCache);
}
});
#endif
}
QCoreApplication::instance()->installEventFilter(this);
@ -278,7 +283,7 @@ QString ThemePrivate::findInTheme(const QString &image, const QString &theme, bo
type = QStringLiteral("/locolor/");
} else if (!compositingActive) {
type = QStringLiteral("/opaque/");
} else if (blurActive) {
} else if (backgroundContrastActive) {
type = QStringLiteral("/translucent/");
}
@ -360,14 +365,6 @@ void ThemePrivate::colorsChanged()
scheduleThemeChangeNotification(PixmapCache);
}
void ThemePrivate::blurBehindChanged(bool blur)
{
if (blurActive != blur) {
blurActive = blur;
scheduleThemeChangeNotification(PixmapCache | SvgElementsCache);
}
}
void ThemePrivate::scheduleThemeChangeNotification(CacheTypes caches)
{
cachesToDiscard |= caches;

5
src/plasma/private/theme_p.h
View File

@ -84,7 +84,6 @@ public:
public Q_SLOTS:
void compositingChanged(bool active);
void colorsChanged();
void blurBehindChanged(bool blur);
void settingsFileChanged(const QString &settings);
void scheduledCacheUpdate();
void onAppExitCleanup();
@ -102,7 +101,7 @@ public:
static const char systemColorsTheme[];
static const char themeRcFile[];
#if HAVE_X11
static EffectWatcher *s_blurEffectWatcher;
static EffectWatcher *s_backgroundContrastEffectWatcher;
#endif
//Ref counting of ThemePrivate instances
static ThemePrivate *globalTheme;
@ -142,7 +141,7 @@ public:
bool locolor : 1;
bool compositingActive : 1;
bool blurActive : 1;
bool backgroundContrastActive : 1;
bool isDefault : 1;
bool useGlobal : 1;
bool hasWallpapers : 1;