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/src/foxitlib.h" 8 #include "xfa/src/fxfa/src/common/xfa_common.h" 9 #include "xfa_rendercontext.h" 10 #include "xfa_ffwidget.h" 11 #define XFA_RENDERCONTEXT_MaxCount 30 12 IXFA_RenderContext* XFA_RenderContext_Create() { 13 return new CXFA_RenderContext; 14 } 15 CXFA_RenderContext::CXFA_RenderContext() { 16 m_pWidgetIterator = NULL; 17 m_pWidget = NULL; 18 m_pPageView = NULL; 19 m_pGS = NULL; 20 m_dwStatus = 0; 21 m_matrix.SetIdentity(); 22 m_rtClipRect.Reset(); 23 } 24 CXFA_RenderContext::~CXFA_RenderContext() { 25 StopRender(); 26 } 27 int32_t CXFA_RenderContext::StartRender(IXFA_PageView* 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 CFX_RectF rtPage; 36 pGS->GetClipRect(rtPage); 37 CFX_Matrix mtRes; 38 mtRes.SetReverse(matrix); 39 m_rtClipRect.Set(rtPage.left, rtPage.top, rtPage.width, rtPage.height); 40 mtRes.TransformRect(m_rtClipRect); 41 m_dwStatus = m_options.m_bHighlight ? XFA_WIDGETSTATUS_Highlight : 0; 42 FX_DWORD dwFilterType = XFA_WIDGETFILTER_Visible | XFA_WIDGETFILTER_AllType | 43 (m_options.m_bPrint ? XFA_WIDGETSTATUS_Printable 44 : XFA_WIDGETSTATUS_Viewable); 45 m_pWidgetIterator = 46 m_pPageView->CreateWidgetIterator(XFA_TRAVERSEWAY_Form, dwFilterType); 47 m_pWidget = m_pWidgetIterator->MoveToNext(); 48 return XFA_RENDERSTATUS_Ready; 49 } 50 int32_t CXFA_RenderContext::DoRender(IFX_Pause* pPause) { 51 int32_t iCount = 0; 52 while (m_pWidget) { 53 CXFA_FFWidget* pWidget = (CXFA_FFWidget*)m_pWidget; 54 CFX_RectF rtWidgetBox; 55 pWidget->GetBBox(rtWidgetBox, XFA_WIDGETSTATUS_Visible); 56 rtWidgetBox.width += 1; 57 rtWidgetBox.height += 1; 58 if (rtWidgetBox.IntersectWith(m_rtClipRect)) { 59 pWidget->RenderWidget(m_pGS, &m_matrix, m_dwStatus); 60 } 61 m_pWidget = m_pWidgetIterator->MoveToNext(); 62 iCount++; 63 if (iCount > XFA_RENDERCONTEXT_MaxCount && pPause && 64 pPause->NeedToPauseNow()) { 65 return XFA_RENDERSTATUS_ToBeContinued; 66 } 67 } 68 return XFA_RENDERSTATUS_Done; 69 } 70 void CXFA_RenderContext::StopRender() { 71 if (m_pWidgetIterator) { 72 m_pWidgetIterator->Release(); 73 m_pWidgetIterator = NULL; 74 } 75 } 76