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78 lines
2.4 KiB
78 lines
2.4 KiB
// Copyright 2016 PDFium Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style license that can be |
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// found in the LICENSE file. |
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
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#include "xfa/fxgraphics/cfx_shading.h" |
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CFX_Shading::CFX_Shading(const CFX_PointF& beginPoint, |
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const CFX_PointF& endPoint, |
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bool isExtendedBegin, |
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bool isExtendedEnd, |
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const FX_ARGB beginArgb, |
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const FX_ARGB endArgb) |
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: m_type(FX_SHADING_Axial), |
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m_beginPoint(beginPoint), |
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m_endPoint(endPoint), |
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m_beginRadius(0), |
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m_endRadius(0), |
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m_isExtendedBegin(isExtendedBegin), |
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m_isExtendedEnd(isExtendedEnd), |
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m_beginArgb(beginArgb), |
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m_endArgb(endArgb) { |
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InitArgbArray(); |
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} |
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CFX_Shading::CFX_Shading(const CFX_PointF& beginPoint, |
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const CFX_PointF& endPoint, |
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const FX_FLOAT beginRadius, |
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const FX_FLOAT endRadius, |
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bool isExtendedBegin, |
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bool isExtendedEnd, |
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const FX_ARGB beginArgb, |
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const FX_ARGB endArgb) |
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: m_type(FX_SHADING_Radial), |
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m_beginPoint(beginPoint), |
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m_endPoint(endPoint), |
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m_beginRadius(beginRadius), |
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m_endRadius(endRadius), |
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m_isExtendedBegin(isExtendedBegin), |
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m_isExtendedEnd(isExtendedEnd), |
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m_beginArgb(beginArgb), |
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m_endArgb(endArgb) { |
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InitArgbArray(); |
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} |
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CFX_Shading::~CFX_Shading() {} |
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void CFX_Shading::InitArgbArray() { |
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int32_t a1; |
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int32_t r1; |
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int32_t g1; |
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int32_t b1; |
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ArgbDecode(m_beginArgb, a1, r1, g1, b1); |
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int32_t a2; |
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int32_t r2; |
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int32_t g2; |
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int32_t b2; |
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ArgbDecode(m_endArgb, a2, r2, g2, b2); |
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FX_FLOAT f = (FX_FLOAT)(FX_SHADING_Steps - 1); |
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FX_FLOAT aScale = 1.0 * (a2 - a1) / f; |
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FX_FLOAT rScale = 1.0 * (r2 - r1) / f; |
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FX_FLOAT gScale = 1.0 * (g2 - g1) / f; |
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FX_FLOAT bScale = 1.0 * (b2 - b1) / f; |
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for (int32_t i = 0; i < FX_SHADING_Steps; i++) { |
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int32_t a3 = static_cast<int32_t>(i * aScale); |
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int32_t r3 = static_cast<int32_t>(i * rScale); |
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int32_t g3 = static_cast<int32_t>(i * gScale); |
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int32_t b3 = static_cast<int32_t>(i * bScale); |
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// TODO(dsinclair): Add overloads for FX_ARGB. pdfium:437 |
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m_argbArray[i] = |
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FXARGB_TODIB(FXARGB_MAKE(a1 + a3, r1 + r3, g1 + g3, b1 + b3)); |
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} |
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}
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