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// Copyright 2016 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 "core/fpdfapi/render/cpdf_rendercontext.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/page/cpdf_pageobject.h"
#include "core/fpdfapi/page/cpdf_pageobjectholder.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/render/cpdf_pagerendercache.h"
#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
#include "core/fpdfapi/render/cpdf_renderoptions.h"
#include "core/fpdfapi/render/cpdf_renderstatus.h"
#include "core/fpdfapi/render/cpdf_textrenderer.h"
#include "core/fxge/cfx_renderdevice.h"
#include "core/fxge/fx_dib.h"
CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage)
: m_pDocument(pPage->m_pDocument),
m_pPageResources(pPage->m_pPageResources),
m_pPageCache(pPage->GetRenderCache()) {}
CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc,
CPDF_PageRenderCache* pPageCache)
: m_pDocument(pDoc), m_pPageResources(nullptr), m_pPageCache(pPageCache) {}
CPDF_RenderContext::~CPDF_RenderContext() {}
void CPDF_RenderContext::GetBackground(
const CFX_RetainPtr<CFX_DIBitmap>& pBuffer,
const CPDF_PageObject* pObj,
const CPDF_RenderOptions* pOptions,
CFX_Matrix* pFinalMatrix) {
CFX_FxgeDevice device;
device.Attach(pBuffer, false, nullptr, false);
FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight());
device.FillRect(&rect, 0xffffffff);
Render(&device, pObj, pOptions, pFinalMatrix);
}
void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
const CFX_Matrix* pObject2Device) {
m_Layers.emplace_back();
m_Layers.back().m_pObjectHolder = pObjectHolder;
if (pObject2Device)
m_Layers.back().m_Matrix = *pObject2Device;
else
m_Layers.back().m_Matrix.SetIdentity();
}
void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
const CPDF_RenderOptions* pOptions,
const CFX_Matrix* pLastMatrix) {
Render(pDevice, nullptr, pOptions, pLastMatrix);
}
void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice,
const CPDF_PageObject* pStopObj,
const CPDF_RenderOptions* pOptions,
const CFX_Matrix* pLastMatrix) {
for (auto& layer : m_Layers) {
pDevice->SaveState();
if (pLastMatrix) {
CFX_Matrix FinalMatrix = layer.m_Matrix;
FinalMatrix.Concat(*pLastMatrix);
CPDF_RenderStatus status;
status.Initialize(this, pDevice, pLastMatrix, pStopObj, nullptr, nullptr,
pOptions, layer.m_pObjectHolder->m_Transparency, false,
nullptr);
status.RenderObjectList(layer.m_pObjectHolder, &FinalMatrix);
if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE)
m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
if (status.m_bStopped) {
pDevice->RestoreState(false);
break;
}
} else {
CPDF_RenderStatus status;
status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr,
pOptions, layer.m_pObjectHolder->m_Transparency, false,
nullptr);
status.RenderObjectList(layer.m_pObjectHolder, &layer.m_Matrix);
if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE)
m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize);
if (status.m_bStopped) {
pDevice->RestoreState(false);
break;
}
}
pDevice->RestoreState(false);
}
}
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