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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/include/fxfa/xfa_rendercontext.h"
#include "xfa/fxgraphics/include/cfx_graphics.h"
#include "xfa/include/fxfa/xfa_ffpageview.h"
#include "xfa/include/fxfa/xfa_ffwidget.h"
#define XFA_RENDERCONTEXT_MaxCount 30
CXFA_RenderContext::CXFA_RenderContext() {
m_pWidgetIterator = NULL;
m_pWidget = NULL;
m_pPageView = NULL;
m_pGS = NULL;
m_dwStatus = 0;
m_matrix.SetIdentity();
m_rtClipRect.Reset();
}
CXFA_RenderContext::~CXFA_RenderContext() {
StopRender();
}
int32_t CXFA_RenderContext::StartRender(CXFA_FFPageView* pPageView,
CFX_Graphics* pGS,
const CFX_Matrix& matrix,
const CXFA_RenderOptions& options) {
m_pPageView = pPageView;
m_pGS = pGS;
m_matrix = matrix;
m_options = options;
CFX_RectF rtPage;
pGS->GetClipRect(rtPage);
CFX_Matrix mtRes;
mtRes.SetReverse(matrix);
m_rtClipRect.Set(rtPage.left, rtPage.top, rtPage.width, rtPage.height);
mtRes.TransformRect(m_rtClipRect);
m_dwStatus = m_options.m_bHighlight ? XFA_WIDGETSTATUS_Highlight : 0;
uint32_t dwFilterType = XFA_WIDGETFILTER_Visible | XFA_WIDGETFILTER_AllType |
(m_options.m_bPrint ? XFA_WIDGETSTATUS_Printable
: XFA_WIDGETSTATUS_Viewable);
m_pWidgetIterator =
m_pPageView->CreateWidgetIterator(XFA_TRAVERSEWAY_Form, dwFilterType);
m_pWidget = m_pWidgetIterator->MoveToNext();
return XFA_RENDERSTATUS_Ready;
}
int32_t CXFA_RenderContext::DoRender(IFX_Pause* pPause) {
int32_t iCount = 0;
while (m_pWidget) {
CXFA_FFWidget* pWidget = (CXFA_FFWidget*)m_pWidget;
CFX_RectF rtWidgetBox;
pWidget->GetBBox(rtWidgetBox, XFA_WIDGETSTATUS_Visible);
rtWidgetBox.width += 1;
rtWidgetBox.height += 1;
if (rtWidgetBox.IntersectWith(m_rtClipRect)) {
pWidget->RenderWidget(m_pGS, &m_matrix, m_dwStatus);
}
m_pWidget = m_pWidgetIterator->MoveToNext();
iCount++;
if (iCount > XFA_RENDERCONTEXT_MaxCount && pPause &&
pPause->NeedToPauseNow()) {
return XFA_RENDERSTATUS_ToBeContinued;
}
}
return XFA_RENDERSTATUS_Done;
}
void CXFA_RenderContext::StopRender() {
if (m_pWidgetIterator) {
m_pWidgetIterator->Release();
m_pWidgetIterator = NULL;
}
}
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