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
XFA_RenderContext_Create()12 IXFA_RenderContext* XFA_RenderContext_Create() {
13 return new CXFA_RenderContext;
14 }
CXFA_RenderContext()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 }
~CXFA_RenderContext()24 CXFA_RenderContext::~CXFA_RenderContext() {
25 StopRender();
26 }
StartRender(IXFA_PageView * pPageView,CFX_Graphics * pGS,const CFX_Matrix & matrix,const CXFA_RenderOptions & options)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 }
DoRender(IFX_Pause * pPause)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 }
StopRender()70 void CXFA_RenderContext::StopRender() {
71 if (m_pWidgetIterator) {
72 m_pWidgetIterator->Release();
73 m_pWidgetIterator = NULL;
74 }
75 }
76