1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "xfa/fxfa/xfa_rendercontext.h" 8 9 #include "xfa/fxfa/xfa_ffpageview.h" 10 #include "xfa/fxfa/xfa_ffwidget.h" 11 #include "xfa/fxgraphics/cfx_graphics.h" 12 13 namespace { 14 15 const int32_t kMaxCount = 30; 16 17 } // namsepace 18 19 CXFA_RenderContext::CXFA_RenderContext() 20 : m_pWidget(nullptr), m_pPageView(nullptr), m_pGS(nullptr), m_dwStatus(0) { 21 m_matrix.SetIdentity(); 22 m_rtClipRect.Reset(); 23 } 24 25 CXFA_RenderContext::~CXFA_RenderContext() {} 26 27 int32_t CXFA_RenderContext::StartRender(CXFA_FFPageView* pPageView, 28 CFX_Graphics* pGS, 29 const CFX_Matrix& matrix, 30 const CXFA_RenderOptions& options) { 31 m_pPageView = pPageView; 32 m_pGS = pGS; 33 m_matrix = matrix; 34 m_options = options; 35 36 CFX_Matrix mtRes; 37 mtRes.SetReverse(matrix); 38 m_rtClipRect = pGS->GetClipRect(); 39 mtRes.TransformRect(m_rtClipRect); 40 m_dwStatus = m_options.m_bHighlight ? XFA_WidgetStatus_Highlight : 0; 41 uint32_t dwFilterType = XFA_WidgetStatus_Visible | 42 (m_options.m_bPrint ? XFA_WidgetStatus_Printable 43 : XFA_WidgetStatus_Viewable); 44 m_pWidgetIterator.reset( 45 m_pPageView->CreateWidgetIterator(XFA_TRAVERSEWAY_Form, dwFilterType)); 46 m_pWidget = m_pWidgetIterator->MoveToNext(); 47 return XFA_RENDERSTATUS_Ready; 48 } 49 50 int32_t CXFA_RenderContext::DoRender(IFX_Pause* pPause) { 51 int32_t iCount = 0; 52 while (m_pWidget) { 53 CXFA_FFWidget* pWidget = m_pWidget; 54 CFX_RectF rtWidgetBox = pWidget->GetBBox(XFA_WidgetStatus_Visible); 55 rtWidgetBox.width += 1; 56 rtWidgetBox.height += 1; 57 if (rtWidgetBox.IntersectWith(m_rtClipRect)) 58 pWidget->RenderWidget(m_pGS, &m_matrix, m_dwStatus); 59 60 m_pWidget = m_pWidgetIterator->MoveToNext(); 61 iCount++; 62 if (iCount > kMaxCount && pPause && pPause->NeedToPauseNow()) 63 return XFA_RENDERSTATUS_ToBeContinued; 64 } 65 return XFA_RENDERSTATUS_Done; 66 } 67 68 void CXFA_RenderContext::StopRender() { 69 m_pWidgetIterator.reset(); 70 } 71
