qt 绘图工具 实例 C++ 2D 图形绘制 编辑

/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the Qt Solutions component. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qtpropertymanager.h" #include "qtpropertybrowserutils_p.h" #include <QDateTime> #include <QLocale> #include <QMap> #include <QTimer> #include <QIcon> #include <QMetaEnum> #include <QFontDatabase> #include <QStyleOption> #include <QStyle> #include <QApplication> #include <QPainter> #include <QLabel> #include <QCheckBox> #include <QLineEdit> #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 #if QT_VERSION >= 0x040400 QT_BEGIN_NAMESPACE #endif 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()) { typedef QMap<const QtProperty *, PrivateData> PropertyToData; typedef typename PropertyToData::const_iterator PropertyToDataConstIterator; const PropertyToDataConstIterator 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) { typedef QMap<const QtProperty *, Value> PropertyToData; typedef typename PropertyToData::iterator PropertyToDataIterator; const PropertyToDataIterator it = propertyMap.find(property); if (it == propertyMap.end()) return; if (it.value()