| // Copyright 2016 The PDFium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "xfa/fgas/graphics/cfgas_geshading.h" |
| |
| CFGAS_GEShading::CFGAS_GEShading(const CFX_PointF& beginPoint, |
| const CFX_PointF& endPoint, |
| bool isExtendedBegin, |
| bool isExtendedEnd, |
| FX_ARGB beginArgb, |
| FX_ARGB endArgb) |
| : m_type(Type::kAxial), |
| m_beginPoint(beginPoint), |
| m_endPoint(endPoint), |
| m_beginRadius(0), |
| m_endRadius(0), |
| m_isExtendedBegin(isExtendedBegin), |
| m_isExtendedEnd(isExtendedEnd) { |
| InitArgbArray(beginArgb, endArgb); |
| } |
| |
| CFGAS_GEShading::CFGAS_GEShading(const CFX_PointF& beginPoint, |
| const CFX_PointF& endPoint, |
| float beginRadius, |
| float endRadius, |
| bool isExtendedBegin, |
| bool isExtendedEnd, |
| FX_ARGB beginArgb, |
| FX_ARGB endArgb) |
| : m_type(Type::kRadial), |
| m_beginPoint(beginPoint), |
| m_endPoint(endPoint), |
| m_beginRadius(beginRadius), |
| m_endRadius(endRadius), |
| m_isExtendedBegin(isExtendedBegin), |
| m_isExtendedEnd(isExtendedEnd) { |
| InitArgbArray(beginArgb, endArgb); |
| } |
| |
| CFGAS_GEShading::~CFGAS_GEShading() = default; |
| |
| void CFGAS_GEShading::InitArgbArray(FX_ARGB beginArgb, FX_ARGB endArgb) { |
| int32_t a1; |
| int32_t r1; |
| int32_t g1; |
| int32_t b1; |
| std::tie(a1, r1, g1, b1) = ArgbDecode(beginArgb); |
| |
| int32_t a2; |
| int32_t r2; |
| int32_t g2; |
| int32_t b2; |
| std::tie(a2, r2, g2, b2) = ArgbDecode(endArgb); |
| |
| float f = static_cast<float>(kSteps - 1); |
| float aScale = 1.0 * (a2 - a1) / f; |
| float rScale = 1.0 * (r2 - r1) / f; |
| float gScale = 1.0 * (g2 - g1) / f; |
| float bScale = 1.0 * (b2 - b1) / f; |
| |
| for (size_t i = 0; i < kSteps; i++) { |
| int32_t a3 = static_cast<int32_t>(i * aScale); |
| int32_t r3 = static_cast<int32_t>(i * rScale); |
| int32_t g3 = static_cast<int32_t>(i * gScale); |
| int32_t b3 = static_cast<int32_t>(i * bScale); |
| |
| // TODO(dsinclair): Add overloads for FX_ARGB. pdfium:437 |
| m_argbArray[i] = ArgbEncode(a1 + a3, r1 + r3, g1 + g3, b1 + b3); |
| } |
| } |