Qt Utilities: misc/desktoputils.cpp Source File

Qt Utilities 6.22.0 Common Qt related C++ classes and routines used by my applications such as dialogs, widgets and models

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desktoputils.cpp
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1#include "./desktoputils.h"
2
3#include <QDesktopServices>
4#include <QUrl>
5
6#if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
7#include <QGuiApplication>
8#include <QStyleHints>
9#endif
10
11#ifdef Q_OS_WIN32
12#include <QFileInfo>
13#endif
14
15#if defined(Q_OS_ANDROID) && (QT_VERSION >= QT_VERSION_CHECK(6, 4, 0))
16#define QT_UTILITIES_OPEN_VIA_ACTIVITY
17#include <QCoreApplication>
18#include <QJniEnvironment>
19#include <QJniObject>
20#endif
21
22namespace QtUtilities {
23
47
53
67 bool openLocalFileOrDir(const QString &path)
68{
69#ifdef QT_UTILITIES_OPEN_VIA_ACTIVITY
70 if (const auto context = QNativeInterface::QAndroidApplication::context(); context.isValid()) {
71 auto env = QJniEnvironment();
72 if (auto openPathMethod = env.findMethod(context.objectClass(), "openPath", "(Ljava/lang/String;)Z")) {
73 return env->CallBooleanMethod(context.object(), openPathMethod, QJniObject::fromString(path).object()) == JNI_TRUE;
74 }
75 }
76#endif
77
78 QUrl url(QStringLiteral("file://"));
79
80#ifdef Q_OS_WIN32
81 // replace backslashes with regular slashes
82 QString tmp(path);
83 tmp.replace(QChar('\\'), QChar('/'));
84
85 // add a slash before the drive letter of an absolute path
86 if (QFileInfo(path).isAbsolute()) {
87 tmp = QStringLiteral("/") + tmp;
88 }
89 url.setPath(tmp, QUrl::DecodedMode);
90
91#else
92 url.setPath(path, QUrl::DecodedMode);
93#endif
94 return QDesktopServices::openUrl(url);
95}
96
97 bool showToast(const QString &message, ToastDuration duration)
98{
99#ifdef Q_OS_ANDROID
100 if (const auto context = QNativeInterface::QAndroidApplication::context(); context.isValid()) {
101 auto env = QJniEnvironment();
102 if (auto showToastMethod = env.findMethod(context.objectClass(), "showToast", "(Ljava/lang/String;I)Z")) {
103 return env->CallBooleanMethod(context.object(), showToastMethod, QJniObject::fromString(message).object(), duration) == JNI_TRUE;
104 }
105 }
106#else
107 Q_UNUSED(message)
108 Q_UNUSED(duration)
109#endif
110 return false;
111}
112
113 bool performHapticFeedback()
114{
115#ifdef Q_OS_ANDROID
116 if (const auto context = QNativeInterface::QAndroidApplication::context(); context.isValid()) {
117 auto env = QJniEnvironment();
118 if (auto hapticFeedbackMethod = env.findMethod(context.objectClass(), "performHapticFeedback", "()Z")) {
119 return env->CallBooleanMethod(context.object(), hapticFeedbackMethod) == JNI_TRUE;
120 }
121 }
122#endif
123 return false;
124}
125
129 bool isPaletteDark(const QPalette &palette)
130{
131 return palette.color(QPalette::WindowText).lightness() > palette.color(QPalette::Window).lightness();
132}
133
139std::optional<bool> isDarkModeEnabled()
140{
141#if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
142 if (const auto *const styleHints = QGuiApplication::styleHints()) {
143 const auto colorScheme = styleHints->colorScheme();
144 if (colorScheme != Qt::ColorScheme::Unknown) {
145 return colorScheme == Qt::ColorScheme::Dark;
146 }
147 }
148#endif
149 return std::nullopt;
150}
151
161QMetaObject::Connection onDarkModeChanged(std::function<void(bool)> &&darkModeChangedCallback, QObject *context, bool invokeImmediately)
162{
163#if (QT_VERSION >= QT_VERSION_CHECK(6, 5, 0))
164 if (const auto *const styleHints = QGuiApplication::styleHints()) {
165 if (invokeImmediately) {
166 darkModeChangedCallback(styleHints->colorScheme() == Qt::ColorScheme::Dark);
167 }
168 return QObject::connect(styleHints, &QStyleHints::colorSchemeChanged, context,
169 [handler = std::move(darkModeChangedCallback)](Qt::ColorScheme colorScheme) { return handler(colorScheme == Qt::ColorScheme::Dark); });
170 }
171#else
172 Q_UNUSED(darkModeChangedCallback)
173 Q_UNUSED(context)
174 Q_UNUSED(invokeImmediately)
175#endif
176 return QMetaObject::Connection();
177}
178
179} // namespace QtUtilities
desktoputils.h
QtUtilities
!
Definition trylocker.h:8
QtUtilities::ToastDuration
ToastDuration
Definition desktoputils.h:26
QtUtilities::performHapticFeedback
QT_UTILITIES_EXPORT bool performHapticFeedback()
Definition desktoputils.cpp:113
QtUtilities::onDarkModeChanged
QT_UTILITIES_EXPORT QMetaObject::Connection onDarkModeChanged(std::function< void(bool)> &&darkModeChangedCallback, QObject *context=nullptr, bool invokeImmediately=true)
Invokes the specified callback when the color scheme changed.
Definition desktoputils.cpp:161
QtUtilities::isDarkModeEnabled
QT_UTILITIES_EXPORT std::optional< bool > isDarkModeEnabled()
Returns whether dark mode is enabled.
Definition desktoputils.cpp:139
QtUtilities::isPaletteDark
QT_UTILITIES_EXPORT bool isPaletteDark(const QPalette &palette=QPalette())
Returns whether palette is dark.
Definition desktoputils.cpp:129
QtUtilities::openLocalFileOrDir
QT_UTILITIES_EXPORT bool openLocalFileOrDir(const QString &path)
\macro QT_UTILITIES_DARK_MODE_FROM_COLOR_SCHEME
Definition desktoputils.cpp:67
QtUtilities::showToast
QT_UTILITIES_EXPORT bool showToast(const QString &message, ToastDuration duration=ToastDuration::Long)
Definition desktoputils.cpp:97