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Diffstat (limited to '')
| -rw-r--r-- | vcl/source/gdi/gradient.cxx | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/vcl/source/gdi/gradient.cxx b/vcl/source/gdi/gradient.cxx new file mode 100644 index 000000000..2973f2d82 --- /dev/null +++ b/vcl/source/gdi/gradient.cxx @@ -0,0 +1,285 @@ +/* -*- 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 <tools/gen.hxx> +#include <vcl/gradient.hxx> + +class Gradient::Impl +{ +public: + GradientStyle meStyle; + Color maStartColor; + Color maEndColor; + sal_uInt16 mnAngle; + sal_uInt16 mnBorder; + sal_uInt16 mnOfsX; + sal_uInt16 mnOfsY; + sal_uInt16 mnIntensityStart; + sal_uInt16 mnIntensityEnd; + sal_uInt16 mnStepCount; + + Impl() + : meStyle (GradientStyle::Linear) + , maStartColor(COL_BLACK) + , maEndColor(COL_WHITE) + , mnAngle(0) + , mnBorder(0) + , mnOfsX(50) + , mnOfsY(50) + , mnIntensityStart(100) + , mnIntensityEnd(100) + , mnStepCount(0) + { + } + + Impl(const Impl& rImplGradient) + : meStyle (rImplGradient.meStyle) + , maStartColor(rImplGradient.maStartColor) + , maEndColor(rImplGradient.maEndColor) + , mnAngle(rImplGradient.mnAngle) + , mnBorder(rImplGradient.mnBorder) + , mnOfsX(rImplGradient.mnOfsX) + , mnOfsY(rImplGradient.mnOfsY) + , mnIntensityStart(rImplGradient.mnIntensityStart) + , mnIntensityEnd(rImplGradient.mnIntensityEnd) + , mnStepCount(rImplGradient.mnStepCount) + { + } + + bool operator==(const Impl& rImpl_Gradient) const + { + return (meStyle == rImpl_Gradient.meStyle) + && (mnAngle == rImpl_Gradient.mnAngle) + && (mnBorder == rImpl_Gradient.mnBorder) + && (mnOfsX == rImpl_Gradient.mnOfsX) + && (mnOfsY == rImpl_Gradient.mnOfsY) + && (mnStepCount == rImpl_Gradient.mnStepCount) + && (mnIntensityStart == rImpl_Gradient.mnIntensityStart) + && (mnIntensityEnd == rImpl_Gradient.mnIntensityEnd) + && (maStartColor == rImpl_Gradient.maStartColor) + && (maEndColor == rImpl_Gradient.maEndColor); + } +}; + +Gradient::Gradient() = default; + +Gradient::Gradient( const Gradient& ) = default; + +Gradient::Gradient( Gradient&& ) = default; + +Gradient::Gradient( GradientStyle eStyle, + const Color& rStartColor, const Color& rEndColor ) : + mpImplGradient() +{ + mpImplGradient->meStyle = eStyle; + mpImplGradient->maStartColor = rStartColor; + mpImplGradient->maEndColor = rEndColor; +} + +Gradient::~Gradient() = default; + + +GradientStyle Gradient::GetStyle() const +{ + return mpImplGradient->meStyle; +} + +void Gradient::SetStyle( GradientStyle eStyle ) +{ + mpImplGradient->meStyle = eStyle; +} + +const Color& Gradient::GetStartColor() const +{ + return mpImplGradient->maStartColor; +} + +void Gradient::SetStartColor( const Color& rColor ) +{ + mpImplGradient->maStartColor = rColor; +} + +const Color& Gradient::GetEndColor() const +{ + return mpImplGradient->maEndColor; +} + +void Gradient::SetEndColor( const Color& rColor ) +{ + mpImplGradient->maEndColor = rColor; +} + +sal_uInt16 Gradient::GetAngle() const +{ + return mpImplGradient->mnAngle; +} + +void Gradient::SetAngle( sal_uInt16 nAngle ) +{ + mpImplGradient->mnAngle = nAngle; +} + +sal_uInt16 Gradient::GetBorder() const +{ + return mpImplGradient->mnBorder; +} + +void Gradient::SetBorder( sal_uInt16 nBorder ) +{ + mpImplGradient->mnBorder = nBorder; +} + +sal_uInt16 Gradient::GetOfsX() const +{ + return mpImplGradient->mnOfsX; +} + +void Gradient::SetOfsX( sal_uInt16 nOfsX ) +{ + mpImplGradient->mnOfsX = nOfsX; +} + +sal_uInt16 Gradient::GetOfsY() const +{ + return mpImplGradient->mnOfsY; +} + +void Gradient::SetOfsY( sal_uInt16 nOfsY ) +{ + mpImplGradient->mnOfsY = nOfsY; +} + +sal_uInt16 Gradient::GetStartIntensity() const +{ + return mpImplGradient->mnIntensityStart; +} + +void Gradient::SetStartIntensity( sal_uInt16 nIntens ) +{ + mpImplGradient->mnIntensityStart = nIntens; +} + +sal_uInt16 Gradient::GetEndIntensity() const +{ + return mpImplGradient->mnIntensityEnd; +} + +void Gradient::SetEndIntensity( sal_uInt16 nIntens ) +{ + mpImplGradient->mnIntensityEnd = nIntens; +} + +sal_uInt16 Gradient::GetSteps() const +{ + return mpImplGradient->mnStepCount; +} + +void Gradient::SetSteps( sal_uInt16 nSteps ) +{ + mpImplGradient->mnStepCount = nSteps; +} + +void Gradient::GetBoundRect( const tools::Rectangle& rRect, tools::Rectangle& rBoundRect, Point& rCenter ) const +{ + tools::Rectangle aRect( rRect ); + sal_uInt16 nAngle = GetAngle() % 3600; + + if( GetStyle() == GradientStyle::Linear || GetStyle() == GradientStyle::Axial ) + { + const double fAngle = nAngle * F_PI1800; + const double fWidth = aRect.GetWidth(); + const double fHeight = aRect.GetHeight(); + double fDX = fWidth * fabs( cos( fAngle ) ) + + fHeight * fabs( sin( fAngle ) ); + double fDY = fHeight * fabs( cos( fAngle ) ) + + fWidth * fabs( sin( fAngle ) ); + fDX = (fDX - fWidth) * 0.5 + 0.5; + fDY = (fDY - fHeight) * 0.5 + 0.5; + aRect.AdjustLeft( -static_cast<long>(fDX) ); + aRect.AdjustRight(static_cast<long>(fDX) ); + aRect.AdjustTop( -static_cast<long>(fDY) ); + aRect.AdjustBottom(static_cast<long>(fDY) ); + + rBoundRect = aRect; + rCenter = rRect.Center(); + } + else + { + if( GetStyle() == GradientStyle::Square || GetStyle() == GradientStyle::Rect ) + { + const double fAngle = nAngle * F_PI1800; + const double fWidth = aRect.GetWidth(); + const double fHeight = aRect.GetHeight(); + double fDX = fWidth * fabs( cos( fAngle ) ) + fHeight * fabs( sin( fAngle ) ); + double fDY = fHeight * fabs( cos( fAngle ) ) + fWidth * fabs( sin( fAngle ) ); + + fDX = ( fDX - fWidth ) * 0.5 + 0.5; + fDY = ( fDY - fHeight ) * 0.5 + 0.5; + + aRect.AdjustLeft( -static_cast<long>(fDX) ); + aRect.AdjustRight(static_cast<long>(fDX) ); + aRect.AdjustTop( -static_cast<long>(fDY) ); + aRect.AdjustBottom(static_cast<long>(fDY) ); + } + + Size aSize( aRect.GetSize() ); + + if( GetStyle() == GradientStyle::Radial ) + { + // Calculation of radii for circle + aSize.setWidth( static_cast<long>(0.5 + sqrt(static_cast<double>(aSize.Width())*static_cast<double>(aSize.Width()) + static_cast<double>(aSize.Height())*static_cast<double>(aSize.Height()))) ); + aSize.setHeight( aSize.Width() ); + } + else if( GetStyle() == GradientStyle::Elliptical ) + { + // Calculation of radii for ellipse + aSize.setWidth( static_cast<long>( 0.5 + static_cast<double>(aSize.Width()) * 1.4142 ) ); + aSize.setHeight( static_cast<long>( 0.5 + static_cast<double>(aSize.Height()) * 1.4142 ) ); + } + + // Calculate new centers + long nZWidth = aRect.GetWidth() * static_cast<long>(GetOfsX()) / 100; + long nZHeight = aRect.GetHeight() * static_cast<long>(GetOfsY()) / 100; + long nBorderX = static_cast<long>(GetBorder()) * aSize.Width() / 100; + long nBorderY = static_cast<long>(GetBorder()) * aSize.Height() / 100; + rCenter = Point( aRect.Left() + nZWidth, aRect.Top() + nZHeight ); + + // Respect borders + aSize.AdjustWidth( -nBorderX ); + aSize.AdjustHeight( -nBorderY ); + + // Recalculate output rectangle + aRect.SetLeft( rCenter.X() - ( aSize.Width() >> 1 ) ); + aRect.SetTop( rCenter.Y() - ( aSize.Height() >> 1 ) ); + + aRect.SetSize( aSize ); + rBoundRect = aRect; + } +} + +Gradient& Gradient::operator=( const Gradient& ) = default; + +Gradient& Gradient::operator=( Gradient&& ) = default; + +bool Gradient::operator==( const Gradient& rGradient ) const +{ + return mpImplGradient == rGradient.mpImplGradient; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |