| /************************************************************** |
| * |
| * 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 INCLUDED_CANVAS_SURFACERECT_HXX |
| #define INCLUDED_CANVAS_SURFACERECT_HXX |
| |
| #include <basegfx/point/b2ipoint.hxx> |
| #include <basegfx/vector/b2isize.hxx> |
| |
| namespace canvas |
| { |
| ////////////////////////////////////////////////////////////////////////////////// |
| // SurfaceRect |
| ////////////////////////////////////////////////////////////////////////////////// |
| |
| struct SurfaceRect |
| { |
| ::basegfx::B2IPoint maPos; |
| ::basegfx::B2ISize maSize; |
| ::basegfx::B2IPoint maBackup; |
| bool bEnabled; |
| |
| explicit SurfaceRect( const ::basegfx::B2ISize &rSize ) : |
| maPos(), |
| maSize(rSize), |
| maBackup(), |
| bEnabled(true) |
| { |
| } |
| |
| // coordinates contained in this rectangle are |
| // constrained to the following rules: |
| // 1) p.x >= pos.x |
| // 2) p.x <= pos.x+size.x |
| // 3) p.y >= pos.y |
| // 4) p.y <= pos.y+size.y |
| // in other words, 'size' means the number of pixels |
| // this rectangle encloses plus one. for example with pos[0,0] |
| // and size[512,512], p[512,512] would return inside. |
| // a size of [0,0] therefore denotes a one-by-one rectangle. |
| bool pointInside( sal_Int32 px, sal_Int32 py ) const |
| { |
| const sal_Int32 x1(maPos.getX()); |
| const sal_Int32 y1(maPos.getY()); |
| const sal_Int32 x2(maPos.getX()+maSize.getX()); |
| const sal_Int32 y2(maPos.getY()+maSize.getY()); |
| if(px < x1) return false; |
| if(px >= x2) return false; |
| if(py < y1) return false; |
| if(py >= y2) return false; |
| return true; |
| } |
| |
| // returns true if the horizontal line intersects the rect. |
| bool hLineIntersect( sal_Int32 lx1, sal_Int32 lx2, sal_Int32 ly ) const |
| { |
| const sal_Int32 x1(maPos.getX()); |
| const sal_Int32 y1(maPos.getY()); |
| const sal_Int32 x2(maPos.getX()+maSize.getX()); |
| const sal_Int32 y2(maPos.getY()+maSize.getY()); |
| if(ly < y1) return false; |
| if(ly >= y2) return false; |
| if((lx1 < x1) && (lx2 < x1)) return false; |
| if((lx1 >= x2) && (lx2 >= x2)) return false; |
| return true; |
| } |
| |
| //! Returns true if the vertical line intersects the rect. |
| bool vLineIntersect( sal_Int32 lx, sal_Int32 ly1, sal_Int32 ly2 ) const |
| { |
| const sal_Int32 x1(maPos.getX()); |
| const sal_Int32 y1(maPos.getY()); |
| const sal_Int32 x2(maPos.getX()+maSize.getX()); |
| const sal_Int32 y2(maPos.getY()+maSize.getY()); |
| if(lx < x1) return false; |
| if(lx >= x2) return false; |
| if((ly1 < y1) && (ly2 < y1)) return false; |
| if((ly1 >= y2) && (ly2 >= y2)) return false; |
| return true; |
| } |
| |
| // returns true if the passed rect intersects this one. |
| bool intersection( const SurfaceRect& r ) const |
| { |
| const sal_Int32 x1(maPos.getX()); |
| const sal_Int32 y1(maPos.getY()); |
| const sal_Int32 x2(maPos.getX()+maSize.getX()); |
| const sal_Int32 y2(maPos.getY()+maSize.getY()); |
| if(r.hLineIntersect(x1,x2,y1)) return true; |
| if(r.hLineIntersect(x1,x2,y2)) return true; |
| if(r.vLineIntersect(x1,y1,y2)) return true; |
| if(r.vLineIntersect(x2,y1,y2)) return true; |
| return false; |
| } |
| |
| bool inside( const SurfaceRect& r ) const |
| { |
| const sal_Int32 x1(maPos.getX()); |
| const sal_Int32 y1(maPos.getY()); |
| const sal_Int32 x2(maPos.getX()+maSize.getX()); |
| const sal_Int32 y2(maPos.getY()+maSize.getY()); |
| if(!(r.pointInside(x1,y1))) return false; |
| if(!(r.pointInside(x2,y1))) return false; |
| if(!(r.pointInside(x2,y2))) return false; |
| if(!(r.pointInside(x1,y2))) return false; |
| return true; |
| } |
| }; |
| } |
| |
| #endif |