Home | History | Annotate | Download | only in app
      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