| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef _BGFX_RANGE_BASICBOX_HXX |
| #define _BGFX_RANGE_BASICBOX_HXX |
| |
| #include <basegfx/range/basicrange.hxx> |
| |
| |
| namespace basegfx |
| { |
| /** Specialization of BasicRange, handling the inside predicates |
| differently. |
| |
| This template considers the rightmost and bottommost border as |
| <em>outside</em> of the range, in contrast to BasicRange, |
| which considers them inside. |
| */ |
| class BasicBox : public BasicRange< sal_Int32, Int32Traits > |
| { |
| typedef BasicRange< sal_Int32, Int32Traits > Base; |
| public: |
| BasicBox() : |
| Base() |
| { |
| } |
| |
| BasicBox( sal_Int32 nValue ) : |
| Base( nValue ) |
| { |
| } |
| |
| BasicBox(const BasicBox& rBox) : |
| Base( rBox ) |
| { |
| } |
| |
| double getCenter() const |
| { |
| if(isEmpty()) |
| { |
| return 0.0; |
| } |
| else |
| { |
| return ((mnMaximum + mnMinimum - 1.0) / 2.0); |
| } |
| } |
| |
| using Base::isInside; |
| |
| bool isInside(sal_Int32 nValue) const |
| { |
| if(isEmpty()) |
| { |
| return false; |
| } |
| else |
| { |
| return (nValue >= mnMinimum) && (nValue < mnMaximum); |
| } |
| } |
| |
| using Base::overlaps; |
| |
| bool overlaps(const BasicBox& rBox) const |
| { |
| if(isEmpty()) |
| { |
| return false; |
| } |
| else |
| { |
| if(rBox.isEmpty()) |
| { |
| return false; |
| } |
| else |
| { |
| return !((rBox.mnMaximum <= mnMinimum) || (rBox.mnMinimum >= mnMaximum)); |
| } |
| } |
| } |
| |
| void grow(sal_Int32 nValue) |
| { |
| if(!isEmpty()) |
| { |
| bool bLessThanZero(nValue < 0); |
| |
| if(nValue > 0 || bLessThanZero) |
| { |
| mnMinimum -= nValue; |
| mnMaximum += nValue; |
| |
| if(bLessThanZero) |
| { |
| // test if range did collapse |
| if(mnMinimum > mnMaximum) |
| { |
| // if yes, collapse to center |
| mnMinimum = mnMaximum = ((mnMaximum + mnMinimum - 1) / 2); |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| } // end of namespace basegfx |
| |
| #endif /* _BGFX_RANGE_BASICBOX_HXX */ |