RelativePositionHelper.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * 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 . */ #include <RelativePositionHelper.hxx> #include <com/sun/star/chart2/RelativeSize.hpp> #include <com/sun/star/awt/Size.hpp> #include <rtl/math.hxx> #include <osl/diagnose.h> using namespace ::com::sun::star; namespace chart { chart2::RelativePosition RelativePositionHelper::getReanchoredPosition( const chart2::RelativePosition & rPosition, const chart2::RelativeSize & rObjectSize, drawing::Alignment aNewAnchor ) { chart2::RelativePosition aResult( rPosition ); if( rPosition.Anchor != aNewAnchor ) { sal_Int32 nShiftHalfWidths = 0; sal_Int32 nShiftHalfHeights = 0; // normalize to top-left switch( rPosition.Anchor ) { case drawing::Alignment_TOP_LEFT: break; case drawing::Alignment_LEFT: nShiftHalfHeights -= 1; break; case drawing::Alignment_BOTTOM_LEFT: nShiftHalfHeights -= 2; break; case drawing::Alignment_TOP: nShiftHalfWidths -= 1; break; case drawing::Alignment_CENTER: nShiftHalfWidths -= 1; nShiftHalfHeights -= 1; break; case drawing::Alignment_BOTTOM: nShiftHalfWidths -= 1; nShiftHalfHeights -= 2; break; case drawing::Alignment_TOP_RIGHT: nShiftHalfWidths -= 2; break; case drawing::Alignment_RIGHT: nShiftHalfWidths -= 2; nShiftHalfHeights -= 1; break; case drawing::Alignment_BOTTOM_RIGHT: nShiftHalfWidths -= 2; nShiftHalfHeights -= 2; break; case drawing::Alignment::Alignment_MAKE_FIXED_SIZE: break; } // transform switch( aNewAnchor ) { case drawing::Alignment_TOP_LEFT: break; case drawing::Alignment_LEFT: nShiftHalfHeights += 1; break; case drawing::Alignment_BOTTOM_LEFT: nShiftHalfHeights += 2; break; case drawing::Alignment_TOP: nShiftHalfWidths += 1; break; case drawing::Alignment_CENTER: nShiftHalfWidths += 1; nShiftHalfHeights += 1; break; case drawing::Alignment_BOTTOM: nShiftHalfWidths += 1; nShiftHalfHeights += 2; break; case drawing::Alignment_TOP_RIGHT: nShiftHalfWidths += 2; break; case drawing::Alignment_RIGHT: nShiftHalfWidths += 2; nShiftHalfHeights += 1; break; case drawing::Alignment_BOTTOM_RIGHT: nShiftHalfWidths += 2; nShiftHalfHeights += 2; break; case drawing::Alignment::Alignment_MAKE_FIXED_SIZE: break; } if( nShiftHalfWidths != 0 ) aResult.Primary += (rObjectSize.Primary / 2.0) * nShiftHalfWidths; if( nShiftHalfHeights != 0 ) aResult.Secondary += (rObjectSize.Secondary / 2.0) * nShiftHalfHeights; } return aResult; } awt::Point RelativePositionHelper::getUpperLeftCornerOfAnchoredObject( awt::Point aPoint , awt::Size aObjectSize , drawing::Alignment aAnchor ) { awt::Point aResult( aPoint ); double fXDelta = 0.0; double fYDelta = 0.0; // adapt x-value switch( aAnchor ) { case drawing::Alignment_TOP: case drawing::Alignment_CENTER: case drawing::Alignment_BOTTOM: fXDelta -= static_cast< double >( aObjectSize.Width ) / 2.0; break; case drawing::Alignment_TOP_RIGHT: case drawing::Alignment_RIGHT: case drawing::Alignment_BOTTOM_RIGHT: fXDelta -= aObjectSize.Width; break; case drawing::Alignment_TOP_LEFT: case drawing::Alignment_LEFT: case drawing::Alignment_BOTTOM_LEFT: default: // nothing to do break; } // adapt y-value switch( aAnchor ) { case drawing::Alignment_LEFT: case drawing::Alignment_CENTER: case drawing::Alignment_RIGHT: fYDelta -= static_cast< double >( aObjectSize.Height ) / 2.0; break; case drawing::Alignment_BOTTOM_LEFT: case drawing::Alignment_BOTTOM: case drawing::Alignment_BOTTOM_RIGHT: fYDelta -= aObjectSize.Height; break; case drawing::Alignment_TOP_LEFT: case drawing::Alignment_TOP: case drawing::Alignment_TOP_RIGHT: default: // nothing to do break; } aResult.X += static_cast< sal_Int32 >( ::rtl::math::round( fXDelta )); aResult.Y += static_cast< sal_Int32 >( ::rtl::math::round( fYDelta )); return aResult; } awt::Point RelativePositionHelper::getCenterOfAnchoredObject( awt::Point aPoint , awt::Size aUnrotatedObjectSize , drawing::Alignment aAnchor , double fAnglePi ) { awt::Point aResult( aPoint ); double fXDelta = 0.0; double fYDelta = 0.0; // adapt x-value switch( aAnchor ) { case drawing::Alignment_TOP: case drawing::Alignment_CENTER: case drawing::Alignment_BOTTOM: // nothing to do break; case drawing::Alignment_TOP_RIGHT: case drawing::Alignment_RIGHT: case drawing::Alignment_BOTTOM_RIGHT: fXDelta -= aUnrotatedObjectSize.Width/2; break; case drawing::Alignment_TOP_LEFT: case drawing::Alignment_LEFT: case drawing::Alignment_BOTTOM_LEFT: default: fXDelta += aUnrotatedObjectSize.Width/2; break; } // adapt y-value switch( aAnchor ) { case drawing::Alignment_LEFT: case drawing::Alignment_CENTER: case drawing::Alignment_RIGHT: // nothing to do break; case drawing::Alignment_BOTTOM_LEFT: case drawing::Alignment_BOTTOM: case drawing::Alignment_BOTTOM_RIGHT: fYDelta -= aUnrotatedObjectSize.Height/2; break; case drawing::Alignment_TOP_LEFT: case drawing::Alignment_TOP: case drawing::Alignment_TOP_RIGHT: fYDelta += aUnrotatedObjectSize.Height/2; break; default: // nothing to do break; } //take rotation into account: aResult.X += static_cast< sal_Int32 >( ::rtl::math::round( fXDelta * std::cos( fAnglePi ) + fYDelta * std::sin( fAnglePi ) ) ); aResult.Y += static_cast< sal_Int32 >( ::rtl::math::round( - fXDelta * std::sin( fAnglePi ) + fYDelta * std::cos( fAnglePi ) ) ); return aResult; } bool RelativePositionHelper::centerGrow( chart2::RelativePosition & rInOutPosition, chart2::RelativeSize & rInOutSize, double fAmountX, double fAmountY ) { chart2::RelativePosition aPos( rInOutPosition ); chart2::RelativeSize aSize( rInOutSize ); const double fPosCheckThreshold = 0.02; const double fSizeCheckThreshold = 0.1; // grow/shrink, back to relative aSize.Primary += fAmountX; aSize.Secondary += fAmountY; double fShiftAmountX = fAmountX / 2.0; double fShiftAmountY = fAmountY / 2.0; // shift X switch( rInOutPosition.Anchor ) { case drawing::Alignment_TOP_LEFT: case drawing::Alignment_LEFT: case drawing::Alignment_BOTTOM_LEFT: aPos.Primary -= fShiftAmountX; break; case drawing::Alignment_TOP: case drawing::Alignment_CENTER: case drawing::Alignment_BOTTOM: // nothing break; case drawing::Alignment_TOP_RIGHT: case drawing::Alignment_RIGHT: case drawing::Alignment_BOTTOM_RIGHT: aPos.Primary += fShiftAmountX; break; case drawing::Alignment::Alignment_MAKE_FIXED_SIZE: break; } // shift Y switch( rInOutPosition.Anchor ) { case drawing::Alignment_TOP: case drawing::Alignment_TOP_LEFT: case drawing::Alignment_TOP_RIGHT: aPos.Secondary -= fShiftAmountY; break; case drawing::Alignment_CENTER: case drawing::Alignment_LEFT: case drawing::Alignment_RIGHT: // nothing break; case drawing::Alignment_BOTTOM: case drawing::Alignment_BOTTOM_LEFT: case drawing::Alignment_BOTTOM_RIGHT: aPos.Secondary += fShiftAmountY; break; case drawing::Alignment::Alignment_MAKE_FIXED_SIZE: break; } // anchor must not be changed OSL_ASSERT( rInOutPosition.Anchor == aPos.Anchor ); if( rInOutPosition.Primary == aPos.Primary && rInOutPosition.Secondary == aPos.Secondary && rInOutSize.Primary == aSize.Primary && rInOutSize.Secondary == aSize.Secondary ) return false; // Note: this somewhat complicated check allows the output being // out-of-bounds if the input was also out-of-bounds, and the change is // for "advantage". E.g., you have a chart that laps out on the left // side. If you shrink it, this should be possible, also if it still // laps out on the left side afterwards. But you shouldn't be able to // grow it then. chart2::RelativePosition aUpperLeft( RelativePositionHelper::getReanchoredPosition( aPos, aSize, drawing::Alignment_TOP_LEFT )); chart2::RelativePosition aLowerRight( RelativePositionHelper::getReanchoredPosition( aPos, aSize, drawing::Alignment_BOTTOM_RIGHT )); // Do not grow, if this leads to corners being off-screen if( fAmountX > 0.0 && ( (aUpperLeft.Primary < fPosCheckThreshold) || (aLowerRight.Primary > (1.0 - fPosCheckThreshold)) )) return false; if( fAmountY > 0.0 && ( (aUpperLeft.Secondary < fPosCheckThreshold) || (aLowerRight.Secondary > (1.0 - fPosCheckThreshold)) )) return false; // Do not shrink, if this leads to a size too small if( fAmountX < 0.0 && ( aSize.Primary < fSizeCheckThreshold )) return false; if( fAmountY < 0.0 && ( aSize.Secondary < fSizeCheckThreshold )) return false; rInOutPosition = aPos; rInOutSize = aSize; return true; } bool RelativePositionHelper::moveObject( chart2::RelativePosition & rInOutPosition, const chart2::RelativeSize & rObjectSize, double fAmountX, double fAmountY ) { chart2::RelativePosition aPos( rInOutPosition ); aPos.Primary += fAmountX; aPos.Secondary += fAmountY; const double fPosCheckThreshold = 0.02; chart2::RelativePosition aUpperLeft( RelativePositionHelper::getReanchoredPosition( aPos, rObjectSize, drawing::Alignment_TOP_LEFT )); chart2::RelativePosition aLowerRight( aUpperLeft ); aLowerRight.Primary += rObjectSize.Primary; aLowerRight.Secondary += rObjectSize.Secondary; const double fFarEdgeThreshold = 1.0 - fPosCheckThreshold; if( ( fAmountX > 0.0 && (aLowerRight.Primary > fFarEdgeThreshold)) || ( fAmountX < 0.0 && (aUpperLeft.Primary < fPosCheckThreshold)) || ( fAmountY > 0.0 && (aLowerRight.Secondary > fFarEdgeThreshold)) || ( fAmountY < 0.0 && (aUpperLeft.Secondary < fPosCheckThreshold)) ) return false; rInOutPosition = aPos; return true; } } // namespace chart /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V636 The 'aUnrotatedObjectSize.Width / 2' expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;.

↑ V636 The 'aUnrotatedObjectSize.Height / 2' expression was implicitly cast from 'int' type to 'double' type. Consider utilizing an explicit type cast to avoid the loss of a fractional part. An example: double A = (double)(X) / Y;.