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/include/xfa_rendercontext.h"
8
9 #include "xfa/fxfa/include/xfa_ffpageview.h"
10 #include "xfa/fxfa/include/xfa_ffwidget.h"
11 #include "xfa/fxgraphics/include/cfx_graphics.h"
12
13 namespace {
14
15 const int32_t kMaxCount = 30;
16
17 } // namsepace
18
CXFA_RenderContext()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
~CXFA_RenderContext()25 CXFA_RenderContext::~CXFA_RenderContext() {}
26
StartRender(CXFA_FFPageView * pPageView,CFX_Graphics * pGS,const CFX_Matrix & matrix,const CXFA_RenderOptions & options)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 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 uint32_t dwFilterType = XFA_WidgetStatus_Visible |
43 (m_options.m_bPrint ? XFA_WidgetStatus_Printable
44 : XFA_WidgetStatus_Viewable);
45 m_pWidgetIterator.reset(
46 m_pPageView->CreateWidgetIterator(XFA_TRAVERSEWAY_Form, dwFilterType));
47 m_pWidget = m_pWidgetIterator->MoveToNext();
48 return XFA_RENDERSTATUS_Ready;
49 }
50
DoRender(IFX_Pause * pPause)51 int32_t CXFA_RenderContext::DoRender(IFX_Pause* pPause) {
52 int32_t iCount = 0;
53 while (m_pWidget) {
54 CXFA_FFWidget* pWidget = m_pWidget;
55 CFX_RectF rtWidgetBox;
56 pWidget->GetBBox(rtWidgetBox, XFA_WidgetStatus_Visible);
57 rtWidgetBox.width += 1;
58 rtWidgetBox.height += 1;
59 if (rtWidgetBox.IntersectWith(m_rtClipRect))
60 pWidget->RenderWidget(m_pGS, &m_matrix, m_dwStatus);
61 m_pWidget = m_pWidgetIterator->MoveToNext();
62 iCount++;
63 if (iCount > kMaxCount && pPause && pPause->NeedToPauseNow())
64 return XFA_RENDERSTATUS_ToBeContinued;
65 }
66 return XFA_RENDERSTATUS_Done;
67 }
68
StopRender()69 void CXFA_RenderContext::StopRender() {
70 m_pWidgetIterator.reset();
71 }
72