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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 "public/fpdf_progressive.h"
#include <utility>
#include "core/fpdfapi/cpdf_pagerendercontext.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
#include "core/fxcrt/fx_memory.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_renderdevice.h"
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "fpdfsdk/ipdfsdk_pauseadapter.h"
#include "public/fpdfview.h"
#include "third_party/base/ptr_util.h"
// These checks are here because core/ and public/ cannot depend on each other.
static_assert(CPDF_ProgressiveRenderer::Ready == FPDF_RENDER_READY,
"CPDF_ProgressiveRenderer::Ready value mismatch");
static_assert(CPDF_ProgressiveRenderer::ToBeContinued ==
FPDF_RENDER_TOBECONTINUED,
"CPDF_ProgressiveRenderer::ToBeContinued value mismatch");
static_assert(CPDF_ProgressiveRenderer::Done == FPDF_RENDER_DONE,
"CPDF_ProgressiveRenderer::Done value mismatch");
static_assert(CPDF_ProgressiveRenderer::Failed == FPDF_RENDER_FAILED,
"CPDF_ProgressiveRenderer::Failed value mismatch");
FPDF_EXPORT int FPDF_CALLCONV FPDF_RenderPageBitmap_Start(FPDF_BITMAP bitmap,
FPDF_PAGE page,
int start_x,
int start_y,
int size_x,
int size_y,
int rotate,
int flags,
IFSDK_PAUSE* pause) {
if (!bitmap || !pause || pause->version != 1)
return FPDF_RENDER_FAILED;
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return FPDF_RENDER_FAILED;
auto pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
CPDF_PageRenderContext* pContext = pOwnedContext.get();
pPage->SetRenderContext(std::move(pOwnedContext));
RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(bitmap));
auto pOwnedDevice = pdfium::MakeUnique<CFX_DefaultRenderDevice>();
CFX_DefaultRenderDevice* pDevice = pOwnedDevice.get();
pContext->m_pDevice = std::move(pOwnedDevice);
pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
IPDFSDK_PauseAdapter IPauseAdapter(pause);
RenderPageWithContext(pContext, page, start_x, start_y, size_x, size_y,
rotate, flags, false, &IPauseAdapter);
#ifdef _SKIA_SUPPORT_PATHS_
pDevice->Flush(false);
pBitmap->UnPreMultiply();
#endif
if (pContext->m_pRenderer) {
return CPDF_ProgressiveRenderer::ToFPDFStatus(
pContext->m_pRenderer->GetStatus());
}
return FPDF_RENDER_FAILED;
}
FPDF_EXPORT int FPDF_CALLCONV FPDF_RenderPage_Continue(FPDF_PAGE page,
IFSDK_PAUSE* pause) {
if (!pause || pause->version != 1)
return FPDF_RENDER_FAILED;
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (!pPage)
return FPDF_RENDER_FAILED;
CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
if (pContext && pContext->m_pRenderer) {
IPDFSDK_PauseAdapter IPauseAdapter(pause);
pContext->m_pRenderer->Continue(&IPauseAdapter);
#ifdef _SKIA_SUPPORT_PATHS_
CFX_RenderDevice* pDevice = pContext->m_pDevice.get();
pDevice->Flush(false);
pDevice->GetBitmap()->UnPreMultiply();
#endif
return CPDF_ProgressiveRenderer::ToFPDFStatus(
pContext->m_pRenderer->GetStatus());
}
return FPDF_RENDER_FAILED;
}
FPDF_EXPORT void FPDF_CALLCONV FPDF_RenderPage_Close(FPDF_PAGE page) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (pPage) {
#ifdef _SKIA_SUPPORT_PATHS_
CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
if (pContext && pContext->m_pRenderer) {
CFX_RenderDevice* pDevice = pContext->m_pDevice.get();
pDevice->Flush(true);
pDevice->GetBitmap()->UnPreMultiply();
}
#endif
pPage->SetRenderContext(nullptr);
}
}
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