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105 lines
2.7 KiB
105 lines
2.7 KiB
/* |
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* Copyright (C) 2018 Vlad Zagorodniy <vladzzag@gmail.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#pragma once |
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// own |
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#include "breezecommon_export.h" |
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// Qt |
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#include <QColor> |
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#include <QImage> |
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#include <QPoint> |
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#include <QSize> |
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namespace Breeze |
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{ |
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class BREEZECOMMON_EXPORT BoxShadowRenderer |
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{ |
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public: |
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// Compiler generated constructors & destructor are fine. |
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/** |
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* Set the size of the box. |
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* @param size The size of the box. |
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**/ |
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void setBoxSize(const QSize &size); |
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/** |
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* Set the radius of box' corners. |
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* @param radius The border radius, in pixels. |
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**/ |
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void setBorderRadius(qreal radius); |
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/** |
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* Set the device pixel ratio of the resulting shadow texture. |
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* @param dpr The device pixel ratio. |
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**/ |
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void setDevicePixelRatio(qreal dpr); |
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/** |
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* Add a shadow. |
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* @param offset The offset of the shadow. |
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* @param radius The blur radius. |
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* @param color The color of the shadow. |
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**/ |
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void addShadow(const QPoint &offset, int radius, const QColor &color); |
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/** |
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* Render the shadow. |
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**/ |
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QImage render() const; |
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/** |
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* Calculate the minimum size of the box. |
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* |
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* This helper computes the minimum size of the box so the shadow behind it has |
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* full its strength. |
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* |
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* @param radius The blur radius of the shadow. |
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**/ |
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static QSize calculateMinimumBoxSize(int radius); |
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/** |
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* Calculate the minimum size of the shadow texture. |
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* |
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* This helper computes the minimum size of the resulting texture so the shadow |
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* is not clipped. |
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* |
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* @param boxSize The size of the box. |
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* @param radius The blur radius. |
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* @param offset The offset of the shadow. |
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**/ |
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static QSize calculateMinimumShadowTextureSize(const QSize &boxSize, int radius, const QPoint &offset); |
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private: |
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QSize m_boxSize; |
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qreal m_borderRadius = 0.0; |
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qreal m_dpr = 1.0; |
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struct Shadow { |
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QPoint offset; |
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int radius; |
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QColor color; |
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}; |
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QVector<Shadow> m_shadows; |
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}; |
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} // namespace Breeze
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