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-rw-r--r--src/widgets/kernel/qsizepolicy.h128
1 files changed, 93 insertions, 35 deletions
diff --git a/src/widgets/kernel/qsizepolicy.h b/src/widgets/kernel/qsizepolicy.h
index 63b578fbf3..6cb4e147e9 100644
--- a/src/widgets/kernel/qsizepolicy.h
+++ b/src/widgets/kernel/qsizepolicy.h
@@ -42,9 +42,25 @@
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qobject.h>
+#include <QtCore/qalgorithms.h>
QT_BEGIN_NAMESPACE
+// gcc < 4.8.0 has problems with init'ing variant members in constexpr ctors
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54922
+#if !defined(Q_CC_GNU) || defined(Q_CC_INTEL) || defined(Q_CC_CLANG) || Q_CC_GNU >= 408
+# define QT_SIZEPOLICY_CONSTEXPR Q_DECL_CONSTEXPR
+# if defined(Q_COMPILER_UNIFORM_INIT)
+# define QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT Q_DECL_CONSTEXPR
+# endif // uniform-init
+#endif
+
+#ifndef QT_SIZEPOLICY_CONSTEXPR
+# define QT_SIZEPOLICY_CONSTEXPR
+#endif
+#ifndef QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT
+# define QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT
+#endif
class QVariant;
class QSizePolicy;
@@ -54,7 +70,6 @@ Q_DECL_CONST_FUNCTION inline uint qHash(QSizePolicy key, uint seed = 0) Q_DECL_N
class Q_WIDGETS_EXPORT QSizePolicy
{
Q_GADGET
- Q_FLAGS(ControlTypes)
public:
enum PolicyFlag {
@@ -93,57 +108,92 @@ public:
ToolButton = 0x00004000
};
Q_DECLARE_FLAGS(ControlTypes, ControlType)
+ Q_FLAG(ControlTypes)
- QSizePolicy() : data(0) { }
+ QT_SIZEPOLICY_CONSTEXPR QSizePolicy() Q_DECL_NOTHROW : data(0) { }
- QSizePolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType)
+#if defined(Q_COMPILER_UNIFORM_INIT) && !defined(Q_QDOC)
+ QT_SIZEPOLICY_CONSTEXPR QSizePolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType) Q_DECL_NOTHROW
+ : bits{0, 0, quint32(horizontal), quint32(vertical),
+ type == DefaultType ? 0 : toControlTypeFieldValue(type), 0, 0, 0}
+ {}
+#else
+ QSizePolicy(Policy horizontal, Policy vertical, ControlType type = DefaultType) Q_DECL_NOTHROW
: data(0) {
bits.horPolicy = horizontal;
bits.verPolicy = vertical;
setControlType(type);
}
- Policy horizontalPolicy() const { return static_cast<Policy>(bits.horPolicy); }
- Policy verticalPolicy() const { return static_cast<Policy>(bits.verPolicy); }
- ControlType controlType() const;
+#endif // uniform-init
+ QT_SIZEPOLICY_CONSTEXPR Policy horizontalPolicy() const Q_DECL_NOTHROW { return static_cast<Policy>(bits.horPolicy); }
+ QT_SIZEPOLICY_CONSTEXPR Policy verticalPolicy() const Q_DECL_NOTHROW { return static_cast<Policy>(bits.verPolicy); }
+ ControlType controlType() const Q_DECL_NOTHROW;
- void setHorizontalPolicy(Policy d) { bits.horPolicy = d; }
- void setVerticalPolicy(Policy d) { bits.verPolicy = d; }
- void setControlType(ControlType type);
+ Q_DECL_RELAXED_CONSTEXPR void setHorizontalPolicy(Policy d) Q_DECL_NOTHROW { bits.horPolicy = d; }
+ Q_DECL_RELAXED_CONSTEXPR void setVerticalPolicy(Policy d) Q_DECL_NOTHROW { bits.verPolicy = d; }
+ void setControlType(ControlType type) Q_DECL_NOTHROW;
- Qt::Orientations expandingDirections() const {
+ QT_SIZEPOLICY_CONSTEXPR Qt::Orientations expandingDirections() const Q_DECL_NOTHROW {
return ( (verticalPolicy() & ExpandFlag) ? Qt::Vertical : Qt::Orientations() )
| ( (horizontalPolicy() & ExpandFlag) ? Qt::Horizontal : Qt::Orientations() ) ;
}
- void setHeightForWidth(bool b) { bits.hfw = b; }
- bool hasHeightForWidth() const { return bits.hfw; }
- void setWidthForHeight(bool b) { bits.wfh = b; }
- bool hasWidthForHeight() const { return bits.wfh; }
+ Q_DECL_RELAXED_CONSTEXPR void setHeightForWidth(bool b) Q_DECL_NOTHROW { bits.hfw = b; }
+ QT_SIZEPOLICY_CONSTEXPR bool hasHeightForWidth() const Q_DECL_NOTHROW { return bits.hfw; }
+ Q_DECL_RELAXED_CONSTEXPR void setWidthForHeight(bool b) Q_DECL_NOTHROW { bits.wfh = b; }
+ QT_SIZEPOLICY_CONSTEXPR bool hasWidthForHeight() const Q_DECL_NOTHROW { return bits.wfh; }
- bool operator==(const QSizePolicy& s) const { return data == s.data; }
- bool operator!=(const QSizePolicy& s) const { return data != s.data; }
+ QT_SIZEPOLICY_CONSTEXPR bool operator==(const QSizePolicy& s) const Q_DECL_NOTHROW { return data == s.data; }
+ QT_SIZEPOLICY_CONSTEXPR bool operator!=(const QSizePolicy& s) const Q_DECL_NOTHROW { return data != s.data; }
friend Q_DECL_CONST_FUNCTION uint qHash(QSizePolicy key, uint seed) Q_DECL_NOTHROW { return qHash(key.data, seed); }
operator QVariant() const;
- int horizontalStretch() const { return static_cast<int>(bits.horStretch); }
- int verticalStretch() const { return static_cast<int>(bits.verStretch); }
- void setHorizontalStretch(int stretchFactor) { bits.horStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
- void setVerticalStretch(int stretchFactor) { bits.verStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
-
- bool retainSizeWhenHidden() const { return bits.retainSizeWhenHidden; }
- void setRetainSizeWhenHidden(bool retainSize) { bits.retainSizeWhenHidden = retainSize; }
+ QT_SIZEPOLICY_CONSTEXPR int horizontalStretch() const Q_DECL_NOTHROW { return static_cast<int>(bits.horStretch); }
+ QT_SIZEPOLICY_CONSTEXPR int verticalStretch() const Q_DECL_NOTHROW { return static_cast<int>(bits.verStretch); }
+ Q_DECL_RELAXED_CONSTEXPR void setHorizontalStretch(int stretchFactor) { bits.horStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
+ Q_DECL_RELAXED_CONSTEXPR void setVerticalStretch(int stretchFactor) { bits.verStretch = static_cast<quint32>(qBound(0, stretchFactor, 255)); }
- void transpose();
+ QT_SIZEPOLICY_CONSTEXPR bool retainSizeWhenHidden() const Q_DECL_NOTHROW { return bits.retainSizeWhenHidden; }
+ Q_DECL_RELAXED_CONSTEXPR void setRetainSizeWhenHidden(bool retainSize) Q_DECL_NOTHROW { bits.retainSizeWhenHidden = retainSize; }
+ Q_DECL_RELAXED_CONSTEXPR void transpose() Q_DECL_NOTHROW { *this = transposed(); }
+#ifndef Q_QDOC
+ QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT
+#endif
+ QSizePolicy transposed() const Q_DECL_NOTHROW Q_REQUIRED_RESULT
+ {
+ return QSizePolicy(bits.transposed());
+ }
private:
#ifndef QT_NO_DATASTREAM
friend Q_WIDGETS_EXPORT QDataStream &operator<<(QDataStream &, const QSizePolicy &);
friend Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
#endif
- QSizePolicy(int i) : data(i) { }
+ QT_SIZEPOLICY_CONSTEXPR QSizePolicy(int i) Q_DECL_NOTHROW : data(i) { }
+ struct Bits;
+ QT_SIZEPOLICY_CONSTEXPR explicit QSizePolicy(Bits b) Q_DECL_NOTHROW : bits(b) { }
+
+ static Q_DECL_RELAXED_CONSTEXPR quint32 toControlTypeFieldValue(ControlType type) Q_DECL_NOTHROW
+ {
+ /*
+ The control type is a flag type, with values 0x1, 0x2, 0x4, 0x8, 0x10,
+ etc. In memory, we pack it onto the available bits (CTSize) in
+ setControlType(), and unpack it here.
+
+ Example:
+
+ 0x00000001 maps to 0
+ 0x00000002 maps to 1
+ 0x00000004 maps to 2
+ 0x00000008 maps to 3
+ etc.
+ */
+
+ return qCountTrailingZeroBits(static_cast<quint32>(type));
+ }
struct Bits {
quint32 horStretch : 8;
@@ -154,6 +204,19 @@ private:
quint32 hfw : 1;
quint32 wfh : 1;
quint32 retainSizeWhenHidden : 1;
+
+ QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT
+ Bits transposed() const Q_DECL_NOTHROW
+ {
+ return {verStretch, // \ swap
+ horStretch, // /
+ verPolicy, // \ swap
+ horPolicy, // /
+ ctype,
+ hfw, // \ don't swap (historic behavior)
+ wfh, // /
+ retainSizeWhenHidden};
+ }
};
union {
Bits bits;
@@ -163,6 +226,8 @@ private:
#if QT_VERSION >= QT_VERSION_CHECK(6,0,0)
// Can't add in Qt 5, as QList<QSizePolicy> would be BiC:
Q_DECLARE_TYPEINFO(QSizePolicy, Q_PRIMITIVE_TYPE);
+#else
+Q_DECLARE_TYPEINFO(QSizePolicy, Q_RELOCATABLE_TYPE);
#endif
Q_DECLARE_OPERATORS_FOR_FLAGS(QSizePolicy::ControlTypes)
@@ -176,16 +241,9 @@ Q_WIDGETS_EXPORT QDataStream &operator>>(QDataStream &, QSizePolicy &);
Q_WIDGETS_EXPORT QDebug operator<<(QDebug dbg, const QSizePolicy &);
#endif
-inline void QSizePolicy::transpose() {
- Policy hData = horizontalPolicy();
- Policy vData = verticalPolicy();
- int hStretch = horizontalStretch();
- int vStretch = verticalStretch();
- setHorizontalPolicy(vData);
- setVerticalPolicy(hData);
- setHorizontalStretch(vStretch);
- setVerticalStretch(hStretch);
-}
+
+#undef QT_SIZEPOLICY_CONSTEXPR
+#undef QT_SIZEPOLICY_CONSTEXPR_AND_UNIFORM_INIT
QT_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 04:39:01 +0000