Qt Utilities: misc/dialogutils.cpp Source File

Qt Utilities 6.19.1 Common Qt related C++ classes and routines used by my applications such as dialogs, widgets and models

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dialogutils.cpp
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1#include "./dialogutils.h"
2
3#include "../misc/desktoputils.h"
4
5#include <QCoreApplication>
6#include <QDir>
7#include <QFileInfo>
8
9#if defined(QT_UTILITIES_GUI_QTWIDGETS) || defined(QT_UTILITIES_GUI_QTQUICK)
10#include <QGuiApplication>
11#include <QPalette>
12#endif
13
14#if defined(QT_UTILITIES_GUI_QTWIDGETS)
15#include <QApplication>
16#include <QCursor>
17#if (QT_VERSION < QT_VERSION_CHECK(5, 10, 0))
18#include <QDesktopWidget>
19#endif
20#include <QScreen>
21#include <QStyle>
22#include <QWidget>
23#endif
24
25namespace QtUtilities {
26
31QString generateWindowTitle(DocumentStatus documentStatus, const QString &documentPath)
32{
33 switch (documentStatus) {
34 case DocumentStatus::Saved:
35 if (documentPath.isEmpty()) {
36 return QCoreApplication::translate("Utilities::windowTitle", "Unsaved - %1").arg(QCoreApplication::applicationName());
37 } else {
38 const QFileInfo file(documentPath);
39 return QCoreApplication::translate("Utilities::windowTitle", "%1 - %2 - %3")
40 .arg(file.fileName(), file.dir().path(), QCoreApplication::applicationName());
41 }
42 case DocumentStatus::Unsaved:
43 if (documentPath.isEmpty()) {
44 return QCoreApplication::translate("Utilities::windowTitle", "*Unsaved - %1").arg(QCoreApplication::applicationName());
45 } else {
46 const QFileInfo file(documentPath);
47 return QCoreApplication::translate("Utilities::windowTitle", "*%1 - %2 - %3")
48 .arg(file.fileName(), file.dir().path(), QCoreApplication::applicationName());
49 }
50 case DocumentStatus::NoDocument:
51 return QCoreApplication::applicationName();
52 default:
53 return QString(); // to suppress warning: "control reaches end of non-void
54 // function"
55 }
56}
57
58#if defined(QT_UTILITIES_GUI_QTWIDGETS) || defined(QT_UTILITIES_GUI_QTQUICK)
59
60#ifdef Q_OS_WIN32
64QColor windowFrameColorForPalette(const QPalette &palette)
65{
66 return palette.window().color().darker(108);
67}
68
72QColor windowFrameColor()
73{
74 return windowFrameColorForPalette(QGuiApplication::palette());
75}
76
80QColor instructionTextColorForPalette(const QPalette &palette)
81{
82 return isPaletteDark(palette) ? palette.text().color() : QColor(0x00, 0x33, 0x99);
83}
84
88QColor instructionTextColor()
89{
90 return instructionTextColorForPalette(QGuiApplication::palette());
91}
92#endif
93
98QString dialogStyleForPalette(const QPalette &palette)
99{
100#ifdef Q_OS_WINDOWS
101 return QStringLiteral("#mainWidget { color: palette(text); background-color: "
102 "palette(base); border: none; }"
103 "#bottomWidget { background-color: palette(window); "
104 "color: palette(window-text); border-top: 1px solid %1; }"
105 "*[classNames~=\"heading\"] { font-size: 12pt; color: %2; }"
106 "*[classNames~=\"input-invalid\"] { color: red; }")
107 .arg(windowFrameColorForPalette(palette).name(), instructionTextColorForPalette(palette).name());
108#else
109 Q_UNUSED(palette)
110 return QStringLiteral("*[classNames~=\"heading\"] { font-weight: bold; }"
111 "*[classNames~=\"input-invalid\"] { color: red; }");
112#endif
113}
114
119const QString &dialogStyle()
120{
121 static const auto style = dialogStyleForPalette(QGuiApplication::palette());
122 return style;
123}
124
125#ifdef QT_UTILITIES_GUI_QTWIDGETS
126
127QRect availableScreenGeometryAtPoint(const QPoint &point)
128{
129#if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
130 QScreen *const screen = QGuiApplication::screenAt(point);
131 if (!screen) {
132 return QRect();
133 }
134 return screen->availableGeometry();
135#else
136 return QApplication::desktop()->availableGeometry(point);
137#endif
138}
139
141static QRect shrinkRectByMargins(QRect rect, const QMargins &margins)
142{
143 rect.setLeft(rect.left() + margins.left());
144 rect.setTop(rect.top() + margins.top());
145 rect.setRight(rect.right() - margins.right());
146 rect.setBottom(rect.bottom() - margins.bottom());
147 return rect;
148}
149
150static QRect limitRect(QRect rect, const QRect &bounds)
151{
152 if (rect.left() < bounds.left()) {
153 rect.setLeft(bounds.left());
154 }
155 if (rect.top() < bounds.top()) {
156 rect.setTop(bounds.top());
157 }
158 if (rect.right() > bounds.right()) {
159 rect.setRight(bounds.right());
160 }
161 if (rect.bottom() > bounds.bottom()) {
162 rect.setBottom(bounds.bottom());
163 }
164 return rect;
165}
166
167static QMargins widgetFrame(QWidget *widget, const QMargins &defaultAssumption = QMargins(10, 25, 10, 10))
168{
169 if (!widget->isWindow()) {
170 return QMargins();
171 }
172 const auto widgetGeometry = widget->geometry();
173 const auto frameGeometry = widget->frameGeometry();
174 const auto frame = QMargins(widgetGeometry.left() - frameGeometry.left(), widgetGeometry.top() - frameGeometry.top(),
175 frameGeometry.right() - widgetGeometry.right(), frameGeometry.bottom() - widgetGeometry.bottom());
176 return frame.isNull() ? defaultAssumption : frame;
177}
178
179static bool centerWidgetInternal(QWidget *widget, const QWidget *parent, const QPoint *position, bool avoidOverflow)
180{
181 const auto availableGeometry = parent ? parent->geometry() : availableScreenGeometryAtPoint(position ? *position : QCursor::pos());
182 const auto alignedRect = QStyle::alignedRect(Qt::LeftToRight, Qt::AlignCenter, widget->size(), availableGeometry);
183 if (!avoidOverflow) {
184 widget->setGeometry(alignedRect);
185 return false;
186 }
187 const auto limitedRect = limitRect(alignedRect, shrinkRectByMargins(availableGeometry, widgetFrame(widget)));
188 widget->setGeometry(limitedRect);
189 return alignedRect != limitedRect;
190}
192
198void centerWidget(QWidget *widget, const QWidget *parent, const QPoint *position)
199{
200 centerWidgetInternal(widget, parent, position, false);
201}
202
213bool centerWidgetAvoidingOverflow(QWidget *widget, const QWidget *parent, const QPoint *position)
214{
215 return centerWidgetInternal(widget, parent, position, true);
216}
217
225void cornerWidget(QWidget *widget, const QPoint *position)
226{
227 const QPoint cursorPos(position ? *position : QCursor::pos());
228 const QRect availableGeometry(availableScreenGeometryAtPoint(cursorPos));
229 const Qt::Alignment alignment
230 = (cursorPos.x() - availableGeometry.left() < availableGeometry.right() - cursorPos.x() ? Qt::AlignLeft : Qt::AlignRight)
231 | (cursorPos.y() - availableGeometry.top() < availableGeometry.bottom() - cursorPos.y() ? Qt::AlignTop : Qt::AlignBottom);
232 widget->setGeometry(QStyle::alignedRect(Qt::LeftToRight, alignment, widget->size(), availableGeometry));
233}
234
238void makeHeading(QWidget *widget)
239{
240 widget->setProperty("classNames", widget->property("classNames").toStringList() << QStringLiteral("heading"));
241}
242
249void updateStyle(QWidget *widget)
250{
251 widget->style()->unpolish(widget);
252 widget->style()->polish(widget);
253 widget->update();
254}
255
256#endif
257
258#endif
259
260} // namespace QtUtilities
desktoputils.h
dialogutils.h
QtUtilities
!
Definition trylocker.h:8
QtUtilities::DocumentStatus
DocumentStatus
The DocumentStatus enum specifies the status of the document in a window.
Definition dialogutils.h:21
QtUtilities::DocumentStatus::Unsaved
@ Unsaved
Definition dialogutils.h:26
QtUtilities::DocumentStatus::Saved
@ Saved
Definition dialogutils.h:24
QtUtilities::DocumentStatus::NoDocument
@ NoDocument
Definition dialogutils.h:22
QtUtilities::generateWindowTitle
QT_UTILITIES_EXPORT QString generateWindowTitle(DocumentStatus documentStatus, const QString &documentPath)
Generates the window title string for the specified documentStatus and documentPath.
Definition dialogutils.cpp:31
QtUtilities::isPaletteDark
QT_UTILITIES_EXPORT bool isPaletteDark(const QPalette &palette=QPalette())
Returns whether palette is dark.
Definition desktoputils.cpp:70