1 files changed, 77 insertions, 0 deletions
diff --git a/xfa/fxfa/app/xfa_rendercontext.cpp b/xfa/fxfa/app/xfa_rendercontext.cpp
new file mode 100644
index 0000000000..5b5cf48a87
--- /dev/null
+++ b/xfa/fxfa/app/xfa_rendercontext.cpp
@@ -0,0 +1,77 @@
+// 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/fxfa/app/xfa_rendercontext.h"
+
+#include "xfa/fxfa/app/xfa_ffwidget.h"
+#include "xfa/include/fxgraphics/fx_graphics.h"
+
+#define XFA_RENDERCONTEXT_MaxCount 30
+
+IXFA_RenderContext* XFA_RenderContext_Create() {
+  return new CXFA_RenderContext;
+}
+CXFA_RenderContext::CXFA_RenderContext() {
+  m_pWidgetIterator = NULL;
+  m_pWidget = NULL;
+  m_pPageView = NULL;
+  m_pGS = NULL;
+  m_dwStatus = 0;
+  m_matrix.SetIdentity();
+  m_rtClipRect.Reset();
+}
+CXFA_RenderContext::~CXFA_RenderContext() {
+  StopRender();
+}
+int32_t CXFA_RenderContext::StartRender(IXFA_PageView* pPageView,
+                                        CFX_Graphics* pGS,
+                                        const CFX_Matrix& matrix,
+                                        const CXFA_RenderOptions& options) {
+  m_pPageView = pPageView;
+  m_pGS = pGS;
+  m_matrix = matrix;
+  m_options = options;
+  CFX_RectF rtPage;
+  pGS->GetClipRect(rtPage);
+  CFX_Matrix mtRes;
+  mtRes.SetReverse(matrix);
+  m_rtClipRect.Set(rtPage.left, rtPage.top, rtPage.width, rtPage.height);
+  mtRes.TransformRect(m_rtClipRect);
+  m_dwStatus = m_options.m_bHighlight ? XFA_WIDGETSTATUS_Highlight : 0;
+  FX_DWORD dwFilterType = XFA_WIDGETFILTER_Visible | XFA_WIDGETFILTER_AllType |
+                          (m_options.m_bPrint ? XFA_WIDGETSTATUS_Printable
+                                              : XFA_WIDGETSTATUS_Viewable);
+  m_pWidgetIterator =
+      m_pPageView->CreateWidgetIterator(XFA_TRAVERSEWAY_Form, dwFilterType);
+  m_pWidget = m_pWidgetIterator->MoveToNext();
+  return XFA_RENDERSTATUS_Ready;
+}
+int32_t CXFA_RenderContext::DoRender(IFX_Pause* pPause) {
+  int32_t iCount = 0;
+  while (m_pWidget) {
+    CXFA_FFWidget* pWidget = (CXFA_FFWidget*)m_pWidget;
+    CFX_RectF rtWidgetBox;
+    pWidget->GetBBox(rtWidgetBox, XFA_WIDGETSTATUS_Visible);
+    rtWidgetBox.width += 1;
+    rtWidgetBox.height += 1;
+    if (rtWidgetBox.IntersectWith(m_rtClipRect)) {
+      pWidget->RenderWidget(m_pGS, &m_matrix, m_dwStatus);
+    }
+    m_pWidget = m_pWidgetIterator->MoveToNext();
+    iCount++;
+    if (iCount > XFA_RENDERCONTEXT_MaxCount && pPause &&
+        pPause->NeedToPauseNow()) {
+      return XFA_RENDERSTATUS_ToBeContinued;
+    }
+  }
+  return XFA_RENDERSTATUS_Done;
+}
+void CXFA_RenderContext::StopRender() {
+  if (m_pWidgetIterator) {
+    m_pWidgetIterator->Release();
+    m_pWidgetIterator = NULL;
+  }
+}