Qt控件用法：QDockWidget、树控件QTreeWidget及属性控件QtTreePropertyBrowser

/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the tools applications of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qtpropertymanager.h" #include "qtpropertybrowserutils_p.h" #include <QtCore/QDateTime> #include <QtCore/QLocale> #include <QtCore/QMap> #include <QtCore/QTimer> #include <QtGui/QIcon> #include <QtCore/QMetaEnum> #include <QtGui/QFontDatabase> #include <QtWidgets/QStyleOption> #include <QtWidgets/QStyle> #include <QtWidgets/QApplication> #include <QtGui/QPainter> #include <QtWidgets/QLabel> #include <limits> #include <limits.h> #include <float.h> #if defined(Q_CC_MSVC) # pragma warning(disable: 4786) /* MS VS 6: truncating debug info after 255 characters */ #endif QT_BEGIN_NAMESPACE template <class PrivateData, class Value> static void setSimpleMinimumData(PrivateData *data, const Value &minVal) { data->minVal = minVal; if (data->maxVal < data->minVal) data->maxVal = data->minVal; if (data->val < data->minVal) data->val = data->minVal; } template <class PrivateData, class Value> static void setSimpleMaximumData(PrivateData *data, const Value &maxVal) { data->maxVal = maxVal; if (data->minVal > data->maxVal) data->minVal = data->maxVal; if (data->val > data->maxVal) data->val = data->maxVal; } template <class PrivateData, class Value> static void setSizeMinimumData(PrivateData *data, const Value &newMinVal) { data->minVal = newMinVal; if (data->maxVal.width() < data->minVal.width()) data->maxVal.setWidth(data->minVal.width()); if (data->maxVal.height() < data->minVal.height()) data->maxVal.setHeight(data->minVal.height()); if (data->val.width() < data->minVal.width()) data->val.setWidth(data->minVal.width()); if (data->val.height() < data->minVal.height()) data->val.setHeight(data->minVal.height()); } template <class PrivateData, class Value> static void setSizeMaximumData(PrivateData *data, const Value &newMaxVal) { data->maxVal = newMaxVal; if (data->minVal.width() > data->maxVal.width()) data->minVal.setWidth(data->maxVal.width()); if (data->minVal.height() > data->maxVal.height()) data->minVal.setHeight(data->maxVal.height()); if (data->val.width() > data->maxVal.width()) data->val.setWidth(data->maxVal.width()); if (data->val.height() > data->maxVal.height()) data->val.setHeight(data->maxVal.height()); } template <class SizeValue> static SizeValue qBoundSize(const SizeValue &minVal, const SizeValue &val, const SizeValue &maxVal) { SizeValue croppedVal = val; if (minVal.width() > val.width()) croppedVal.setWidth(minVal.width()); else if (maxVal.width() < val.width()) croppedVal.setWidth(maxVal.width()); if (minVal.height() > val.height()) croppedVal.setHeight(minVal.height()); else if (maxVal.height() < val.height()) croppedVal.setHeight(maxVal.height()); return croppedVal; } // Match the exact signature of qBound for VS 6. QSize qBound(QSize minVal, QSize val, QSize maxVal) { return qBoundSize(minVal, val, maxVal); } QSizeF qBound(QSizeF minVal, QSizeF val, QSizeF maxVal) { return qBoundSize(minVal, val, maxVal); } namespace { namespace { template <class Value> void orderBorders(Value &minVal, Value &maxVal) { if (minVal > maxVal) qSwap(minVal, maxVal); } template <class Value> static void orderSizeBorders(Value &minVal, Value &maxVal) { Value fromSize = minVal; Value toSize = maxVal; if (fromSize.width() > toSize.width()) { fromSize.setWidth(maxVal.width()); toSize.setWidth(minVal.width()); } if (fromSize.height() > toSize.height()) { fromSize.setHeight(maxVal.height()); toSize.setHeight(minVal.height()); } minVal = fromSize; maxVal = toSize; } void orderBorders(QSize &minVal, QSize &maxVal) { orderSizeBorders(minVal, maxVal); } void orderBorders(QSizeF &minVal, QSizeF &maxVal) { orderSizeBorders(minVal, maxVal); } } } //////// template <class Value, class PrivateData> static Value getData(const QMap<const QtProperty *, PrivateData> &propertyMap, Value PrivateData::*data, const QtProperty *property, const Value &defaultValue = Value()) { const auto it = propertyMap.constFind(property); if (it == propertyMap.constEnd()) return defaultValue; return it.value().*data; } template <class Value, class PrivateData> static Value getValue(const QMap<const QtProperty *, PrivateData> &propertyMap, const QtProperty *property, const Value &defaultValue = Value()) { return getData<Value>(propertyMap, &PrivateData::val, property, defaultValue); } template <class Value, class PrivateData> static Value getMinimum(const QMap<const QtProperty *, PrivateData> &propertyMap, const QtProperty *property, const Value &defaultValue = Value()) { return getData<Value>(propertyMap, &PrivateData::minVal, property, defaultValue); } template <class Value, class PrivateData> static Value getMaximum(const QMap<const QtProperty *, PrivateData> &propertyMap, const QtProperty *property, const Value &defaultValue = Value()) { return getData<Value>(propertyMap, &PrivateData::maxVal, property, defaultValue); } template <class ValueChangeParameter, class Value, class PropertyManager> static void setSimpleValue(QMap<const QtProperty *, Value> &propertyMap, PropertyManager *manager, void (PropertyManager::*propertyChangedSignal)(QtProperty *), void (PropertyManager::*valueChangedSignal)(QtProperty *, ValueChangeParameter), QtProperty *property, const Value &val) { const auto it = propertyMap.find(property); if (it == propertyMap.end()) return; if (it.value() == val) return; it.value() = val; emit (manager->*propertyChangedSignal)(property); emit (man