Rename the fxgraphics classes

The build system doesn't like name clashes over directories in XFA.
The Pattern and and Shading classes need to be renamed to not clash with
future XFA node class names.

Change-Id: I978da492d884626c0db2e11ac236a3399e9c7e58
Reviewed-on: https://pdfium-review.googlesource.com/18290
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/xfa/fxgraphics/cxfa_geshading.cpp b/xfa/fxgraphics/cxfa_geshading.cpp
new file mode 100644
index 0000000000..f6911696a1
--- /dev/null
+++ b/xfa/fxgraphics/cxfa_geshading.cpp
@@ -0,0 +1,78 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// 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/fxgraphics/cxfa_geshading.h"
+
+CXFA_GEShading::CXFA_GEShading(const CFX_PointF& beginPoint,
+                               const CFX_PointF& endPoint,
+                               bool isExtendedBegin,
+                               bool isExtendedEnd,
+                               const FX_ARGB beginArgb,
+                               const FX_ARGB endArgb)
+    : m_type(FX_SHADING_Axial),
+      m_beginPoint(beginPoint),
+      m_endPoint(endPoint),
+      m_beginRadius(0),
+      m_endRadius(0),
+      m_isExtendedBegin(isExtendedBegin),
+      m_isExtendedEnd(isExtendedEnd),
+      m_beginArgb(beginArgb),
+      m_endArgb(endArgb) {
+  InitArgbArray();
+}
+
+CXFA_GEShading::CXFA_GEShading(const CFX_PointF& beginPoint,
+                               const CFX_PointF& endPoint,
+                               const float beginRadius,
+                               const float endRadius,
+                               bool isExtendedBegin,
+                               bool isExtendedEnd,
+                               const FX_ARGB beginArgb,
+                               const FX_ARGB endArgb)
+    : m_type(FX_SHADING_Radial),
+      m_beginPoint(beginPoint),
+      m_endPoint(endPoint),
+      m_beginRadius(beginRadius),
+      m_endRadius(endRadius),
+      m_isExtendedBegin(isExtendedBegin),
+      m_isExtendedEnd(isExtendedEnd),
+      m_beginArgb(beginArgb),
+      m_endArgb(endArgb) {
+  InitArgbArray();
+}
+
+CXFA_GEShading::~CXFA_GEShading() {}
+
+void CXFA_GEShading::InitArgbArray() {
+  int32_t a1;
+  int32_t r1;
+  int32_t g1;
+  int32_t b1;
+  std::tie(a1, r1, g1, b1) = ArgbDecode(m_beginArgb);
+
+  int32_t a2;
+  int32_t r2;
+  int32_t g2;
+  int32_t b2;
+  std::tie(a2, r2, g2, b2) = ArgbDecode(m_endArgb);
+
+  float f = static_cast<float>(FX_SHADING_Steps - 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 (int32_t i = 0; i < FX_SHADING_Steps; 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] =
+        FXARGB_TODIB(FXARGB_MAKE(a1 + a3, r1 + r3, g1 + g3, b1 + b3));
+  }
+}