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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 <memory>
#include <utility>
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/render/cpdf_pagerendercontext.h"
#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "fpdfsdk/cpdfsdk_pauseadapter.h"
#include "fpdfsdk/cpdfsdk_renderpage.h"
#include "public/fpdfview.h"
#if defined(_SKIA_SUPPORT_PATHS_)
#include "core/fxge/cfx_renderdevice.h"
#endif
// These checks are here because core/ and public/ cannot depend on each other.
static_assert(CPDF_ProgressiveRenderer::kReady == FPDF_RENDER_READY,
"CPDF_ProgressiveRenderer::kReady value mismatch");
static_assert(CPDF_ProgressiveRenderer::kToBeContinued ==
FPDF_RENDER_TOBECONTINUED,
"CPDF_ProgressiveRenderer::kToBeContinued value mismatch");
static_assert(CPDF_ProgressiveRenderer::kDone == FPDF_RENDER_DONE,
"CPDF_ProgressiveRenderer::kDone value mismatch");
static_assert(CPDF_ProgressiveRenderer::kFailed == FPDF_RENDER_FAILED,
"CPDF_ProgressiveRenderer::kFailed value mismatch");
namespace {
int ToFPDFStatus(CPDF_ProgressiveRenderer::Status status) {
return static_cast<int>(status);
}
} // namespace
FPDF_EXPORT int FPDF_CALLCONV
FPDF_RenderPageBitmapWithColorScheme_Start(FPDF_BITMAP bitmap,
FPDF_PAGE page,
int start_x,
int start_y,
int size_x,
int size_y,
int rotate,
int flags,
const FPDF_COLORSCHEME* color_scheme,
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 = std::make_unique<CPDF_PageRenderContext>();
CPDF_PageRenderContext* pContext = pOwnedContext.get();
pPage->SetRenderContext(std::move(pOwnedContext));
RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(bitmap));
auto pOwnedDevice = std::make_unique<CFX_DefaultRenderDevice>();
CFX_DefaultRenderDevice* pDevice = pOwnedDevice.get();
pContext->m_pDevice = std::move(pOwnedDevice);
pDevice->AttachWithRgbByteOrder(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER));
CPDFSDK_PauseAdapter pause_adapter(pause);
CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
size_y, rotate, flags, color_scheme,
/*need_to_restore=*/false, &pause_adapter);
#if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
pDevice->Flush(false);
#endif
#if defined(_SKIA_SUPPORT_PATHS_)
pBitmap->UnPreMultiply();
#endif
if (!pContext->m_pRenderer)
return FPDF_RENDER_FAILED;
return ToFPDFStatus(pContext->m_pRenderer->GetStatus());
}
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) {
return FPDF_RenderPageBitmapWithColorScheme_Start(
bitmap, page, start_x, start_y, size_x, size_y, rotate, flags,
/*color_scheme=*/nullptr, pause);
}
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;
auto* pContext =
static_cast<CPDF_PageRenderContext*>(pPage->GetRenderContext());
if (!pContext || !pContext->m_pRenderer)
return FPDF_RENDER_FAILED;
CPDFSDK_PauseAdapter pause_adapter(pause);
pContext->m_pRenderer->Continue(&pause_adapter);
#if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
CFX_RenderDevice* pDevice = pContext->m_pDevice.get();
pDevice->Flush(false);
#endif
#if defined(_SKIA_SUPPORT_PATHS_)
pDevice->GetBitmap()->UnPreMultiply();
#endif
return ToFPDFStatus(pContext->m_pRenderer->GetStatus());
}
FPDF_EXPORT void FPDF_CALLCONV FPDF_RenderPage_Close(FPDF_PAGE page) {
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
if (pPage) {
#if defined(_SKIA_SUPPORT_PATHS_)
auto* pContext =
static_cast<CPDF_PageRenderContext*>(pPage->GetRenderContext());
if (pContext && pContext->m_pRenderer) {
CFX_RenderDevice* pDevice = pContext->m_pDevice.get();
pDevice->Flush(true);
pDevice->GetBitmap()->UnPreMultiply();
}
#endif
pPage->ClearRenderContext();
}
}