Move xfa/src/fxgraphics/src up one level.

This Cl moves the xfa/src/fxgraphics/src code up to the, previously empty,
xfa/src/fxgraphics directory and removes xfa/src/fxgraphics/src.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1775733004 .

1 files changed, 201 insertions, 0 deletions

diff --git a/xfa/src/fxgraphics/fx_path_generator.cpp b/xfa/src/fxgraphics/fx_path_generator.cpp
new file mode 100644
index 0000000000..8b0bab00da
--- /dev/null
+++ b/xfa/src/fxgraphics/fx_path_generator.cpp
@@ -0,0 +1,201 @@
+// Copyright 2014 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/src/fxgraphics/fx_path_generator.h"
+
+#include "xfa/src/fxgraphics/pre.h"
+
+CFX_PathGenerator::CFX_PathGenerator() {
+  m_pPathData = NULL;
+}
+void CFX_PathGenerator::Create() {
+  m_pPathData = new CFX_PathData;
+}
+CFX_PathGenerator::~CFX_PathGenerator() {
+  if (m_pPathData) {
+    delete m_pPathData;
+    m_pPathData = NULL;
+  }
+}
+void CFX_PathGenerator::AddPathData(CFX_PathData* pPathData) {
+  if (pPathData && pPathData->GetPointCount() > 0) {
+    int nCount = pPathData->GetPointCount();
+    FX_PATHPOINT* pPoints = pPathData->GetPoints();
+    AddPathData(pPoints, nCount);
+  }
+}
+void CFX_PathGenerator::AddPathData(FX_PATHPOINT* pPoints, int nCount) {
+  if (pPoints && nCount > 0) {
+    int nOldCount = m_pPathData->GetPointCount();
+    m_pPathData->AddPointCount(nCount);
+    FX_PATHPOINT* pDstPoints = m_pPathData->GetPoints();
+    FXSYS_memcpy(pDstPoints + nOldCount, pPoints,
+                 sizeof(FX_PATHPOINT) * nCount);
+  }
+}
+void CFX_PathGenerator::MoveTo(FX_FLOAT x, FX_FLOAT y) {
+  m_pPathData->AddPointCount(1);
+  m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1, x, y, FXPT_MOVETO);
+}
+void CFX_PathGenerator::LineTo(FX_FLOAT x, FX_FLOAT y) {
+  m_pPathData->AddPointCount(1);
+  m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1, x, y, FXPT_LINETO);
+}
+void CFX_PathGenerator::BezierTo(FX_FLOAT ctrl_x1,
+                                 FX_FLOAT ctrl_y1,
+                                 FX_FLOAT ctrl_x2,
+                                 FX_FLOAT ctrl_y2,
+                                 FX_FLOAT to_x,
+                                 FX_FLOAT to_y) {
+  int old_count = m_pPathData->GetPointCount();
+  m_pPathData->AddPointCount(3);
+  m_pPathData->SetPoint(old_count, ctrl_x1, ctrl_y1, FXPT_BEZIERTO);
+  m_pPathData->SetPoint(old_count + 1, ctrl_x2, ctrl_y2, FXPT_BEZIERTO);
+  m_pPathData->SetPoint(old_count + 2, to_x, to_y, FXPT_BEZIERTO);
+}
+void CFX_PathGenerator::Close() {
+  if (m_pPathData->GetPointCount() > 0) {
+    int index = m_pPathData->GetPointCount() - 1;
+    FX_PATHPOINT* pPoints = m_pPathData->GetPoints();
+    pPoints[index].m_Flag |= FXPT_CLOSEFIGURE;
+  }
+}
+void CFX_PathGenerator::AddLine(FX_FLOAT x1,
+                                FX_FLOAT y1,
+                                FX_FLOAT x2,
+                                FX_FLOAT y2) {
+  int old_count = m_pPathData->GetPointCount();
+  m_pPathData->AddPointCount(2);
+  m_pPathData->SetPoint(old_count, x1, y1, FXPT_MOVETO);
+  m_pPathData->SetPoint(old_count + 1, x2, y2, FXPT_LINETO);
+}
+void CFX_PathGenerator::AddBezier(FX_FLOAT start_x,
+                                  FX_FLOAT start_y,
+                                  FX_FLOAT ctrl_x1,
+                                  FX_FLOAT ctrl_y1,
+                                  FX_FLOAT ctrl_x2,
+                                  FX_FLOAT ctrl_y2,
+                                  FX_FLOAT end_x,
+                                  FX_FLOAT end_y) {
+  int old_count = m_pPathData->GetPointCount();
+  m_pPathData->AddPointCount(4);
+  m_pPathData->SetPoint(old_count, start_x, start_y, FXPT_MOVETO);
+  m_pPathData->SetPoint(old_count + 1, ctrl_x1, ctrl_y1, FXPT_BEZIERTO);
+  m_pPathData->SetPoint(old_count + 2, ctrl_x2, ctrl_y2, FXPT_BEZIERTO);
+  m_pPathData->SetPoint(old_count + 3, end_x, end_y, FXPT_BEZIERTO);
+}
+void CFX_PathGenerator::AddRectangle(FX_FLOAT x1,
+                                     FX_FLOAT y1,
+                                     FX_FLOAT x2,
+                                     FX_FLOAT y2) {
+  m_pPathData->AppendRect(x1, y1, x2, y2);
+}
+void CFX_PathGenerator::AddEllipse(FX_FLOAT x,
+                                   FX_FLOAT y,
+                                   FX_FLOAT width,
+                                   FX_FLOAT height) {
+  AddArc(x, y, width, height, 0, FX_PI * 2);
+}
+void CFX_PathGenerator::ArcTo(FX_FLOAT x,
+                              FX_FLOAT y,
+                              FX_FLOAT width,
+                              FX_FLOAT height,
+                              FX_FLOAT start_angle,
+                              FX_FLOAT sweep_angle) {
+  FX_FLOAT x0 = FXSYS_cos(sweep_angle / 2);
+  FX_FLOAT y0 = FXSYS_sin(sweep_angle / 2);
+  FX_FLOAT tx = ((1.0f - x0) * 4) / (3 * 1.0f);
+  FX_FLOAT ty = y0 - ((tx * x0) / y0);
+  FX_FLOAT px[3], py[3];
+  px[0] = x0 + tx;
+  py[0] = -ty;
+  px[1] = x0 + tx;
+  py[1] = ty;
+  FX_FLOAT sn = FXSYS_sin(start_angle + sweep_angle / 2);
+  FX_FLOAT cs = FXSYS_cos(start_angle + sweep_angle / 2);
+  int old_count = m_pPathData->GetPointCount();
+  m_pPathData->AddPointCount(3);
+  FX_FLOAT bezier_x, bezier_y;
+  bezier_x = x + (width * ((px[0] * cs) - (py[0] * sn)));
+  bezier_y = y + (height * ((px[0] * sn) + (py[0] * cs)));
+  m_pPathData->SetPoint(old_count, bezier_x, bezier_y, FXPT_BEZIERTO);
+  bezier_x = x + (width * ((px[1] * cs) - (py[1] * sn)));
+  bezier_y = y + (height * ((px[1] * sn) + (py[1] * cs)));
+  m_pPathData->SetPoint(old_count + 1, bezier_x, bezier_y, FXPT_BEZIERTO);
+  bezier_x = x + (width * FXSYS_cos(start_angle + sweep_angle));
+  bezier_y = y + (height * FXSYS_sin(start_angle + sweep_angle));
+  m_pPathData->SetPoint(old_count + 2, bezier_x, bezier_y, FXPT_BEZIERTO);
+}
+void CFX_PathGenerator::AddArc(FX_FLOAT x,
+                               FX_FLOAT y,
+                               FX_FLOAT width,
+                               FX_FLOAT height,
+                               FX_FLOAT start_angle,
+                               FX_FLOAT sweep_angle) {
+  if (sweep_angle == 0) {
+    return;
+  }
+
+  const FX_FLOAT bezier_arc_angle_epsilon = 0.01f;
+  while (start_angle > FX_PI * 2) {
+    start_angle -= FX_PI * 2;
+  }
+  while (start_angle < 0) {
+    start_angle += FX_PI * 2;
+  }
+  if (sweep_angle >= FX_PI * 2) {
+    sweep_angle = FX_PI * 2;
+  }
+  if (sweep_angle <= -FX_PI * 2) {
+    sweep_angle = -FX_PI * 2;
+  }
+  m_pPathData->AddPointCount(1);
+  m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
+                        x + (width * FXSYS_cos(start_angle)),
+                        y + (height * FXSYS_sin(start_angle)), FXPT_MOVETO);
+  FX_FLOAT total_sweep = 0, local_sweep = 0, prev_sweep = 0;
+  FX_BOOL done = FALSE;
+  do {
+    if (sweep_angle < 0) {
+      prev_sweep = total_sweep;
+      local_sweep = -FX_PI / 2;
+      total_sweep -= FX_PI / 2;
+      if (total_sweep <= sweep_angle + bezier_arc_angle_epsilon) {
+        local_sweep = sweep_angle - prev_sweep;
+        done = TRUE;
+      }
+    } else {
+      prev_sweep = total_sweep;
+      local_sweep = FX_PI / 2;
+      total_sweep += FX_PI / 2;
+      if (total_sweep >= sweep_angle - bezier_arc_angle_epsilon) {
+        local_sweep = sweep_angle - prev_sweep;
+        done = TRUE;
+      }
+    }
+    ArcTo(x, y, width, height, start_angle, local_sweep);
+    start_angle += local_sweep;
+  } while (!done);
+}
+void CFX_PathGenerator::AddPie(FX_FLOAT x,
+                               FX_FLOAT y,
+                               FX_FLOAT width,
+                               FX_FLOAT height,
+                               FX_FLOAT start_angle,
+                               FX_FLOAT sweep_angle) {
+  if (sweep_angle == 0) {
+    int old_count = m_pPathData->GetPointCount();
+    m_pPathData->AddPointCount(2);
+    m_pPathData->SetPoint(old_count, x, y, FXPT_MOVETO);
+    m_pPathData->SetPoint(old_count + 1, x + (width * FXSYS_cos(start_angle)),
+                          y + (height * FXSYS_sin(start_angle)), FXPT_LINETO);
+    return;
+  }
+  AddArc(x, y, width, height, start_angle, sweep_angle);
+  m_pPathData->AddPointCount(1);
+  m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1, x, y,
+                        FXPT_LINETO | FXPT_CLOSEFIGURE);
+}