129 lines
5.0 KiB
C++
129 lines
5.0 KiB
C++
// Copyright 2014 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "public/fpdf_progressive.h"
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#include <memory>
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#include <utility>
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/render/cpdf_pagerendercontext.h"
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#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
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#include "core/fxge/cfx_defaultrenderdevice.h"
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#include "fpdfsdk/cpdfsdk_helpers.h"
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#include "fpdfsdk/cpdfsdk_pauseadapter.h"
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#include "fpdfsdk/cpdfsdk_renderpage.h"
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#include "public/fpdfview.h"
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// These checks are here because core/ and public/ cannot depend on each other.
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static_assert(CPDF_ProgressiveRenderer::kReady == FPDF_RENDER_READY,
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"CPDF_ProgressiveRenderer::kReady value mismatch");
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static_assert(CPDF_ProgressiveRenderer::kToBeContinued ==
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FPDF_RENDER_TOBECONTINUED,
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"CPDF_ProgressiveRenderer::kToBeContinued value mismatch");
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static_assert(CPDF_ProgressiveRenderer::kDone == FPDF_RENDER_DONE,
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"CPDF_ProgressiveRenderer::kDone value mismatch");
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static_assert(CPDF_ProgressiveRenderer::kFailed == FPDF_RENDER_FAILED,
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"CPDF_ProgressiveRenderer::kFailed value mismatch");
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namespace {
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int ToFPDFStatus(CPDF_ProgressiveRenderer::Status status) {
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return static_cast<int>(status);
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}
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} // namespace
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FPDF_EXPORT int FPDF_CALLCONV
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FPDF_RenderPageBitmapWithColorScheme_Start(FPDF_BITMAP bitmap,
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FPDF_PAGE page,
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int start_x,
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int start_y,
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int size_x,
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int size_y,
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int rotate,
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int flags,
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const FPDF_COLORSCHEME* color_scheme,
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IFSDK_PAUSE* pause) {
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if (!bitmap || !pause || pause->version != 1)
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return FPDF_RENDER_FAILED;
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CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
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if (!pPage)
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return FPDF_RENDER_FAILED;
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auto pOwnedContext = std::make_unique<CPDF_PageRenderContext>();
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CPDF_PageRenderContext* pContext = pOwnedContext.get();
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pPage->SetRenderContext(std::move(pOwnedContext));
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RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(bitmap));
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auto pOwnedDevice = std::make_unique<CFX_DefaultRenderDevice>();
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CFX_DefaultRenderDevice* pDevice = pOwnedDevice.get();
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pContext->m_pDevice = std::move(pOwnedDevice);
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pDevice->AttachWithRgbByteOrder(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER));
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CPDFSDK_PauseAdapter pause_adapter(pause);
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CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
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size_y, rotate, flags, color_scheme,
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/*need_to_restore=*/false, &pause_adapter);
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#if defined(_SKIA_SUPPORT_)
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if (CFX_DefaultRenderDevice::SkiaIsDefaultRenderer()) {
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pBitmap->UnPreMultiply();
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}
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#endif // defined(_SKIA_SUPPORT_)
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if (!pContext->m_pRenderer)
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return FPDF_RENDER_FAILED;
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return ToFPDFStatus(pContext->m_pRenderer->GetStatus());
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}
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FPDF_EXPORT int FPDF_CALLCONV FPDF_RenderPageBitmap_Start(FPDF_BITMAP bitmap,
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FPDF_PAGE page,
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int start_x,
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int start_y,
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int size_x,
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int size_y,
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int rotate,
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int flags,
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IFSDK_PAUSE* pause) {
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return FPDF_RenderPageBitmapWithColorScheme_Start(
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bitmap, page, start_x, start_y, size_x, size_y, rotate, flags,
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/*color_scheme=*/nullptr, pause);
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}
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FPDF_EXPORT int FPDF_CALLCONV FPDF_RenderPage_Continue(FPDF_PAGE page,
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IFSDK_PAUSE* pause) {
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if (!pause || pause->version != 1)
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return FPDF_RENDER_FAILED;
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CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
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if (!pPage)
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return FPDF_RENDER_FAILED;
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auto* pContext =
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static_cast<CPDF_PageRenderContext*>(pPage->GetRenderContext());
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if (!pContext || !pContext->m_pRenderer)
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return FPDF_RENDER_FAILED;
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CPDFSDK_PauseAdapter pause_adapter(pause);
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pContext->m_pRenderer->Continue(&pause_adapter);
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#if defined(_SKIA_SUPPORT_)
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if (CFX_DefaultRenderDevice::SkiaIsDefaultRenderer()) {
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pContext->m_pDevice->GetBitmap()->UnPreMultiply();
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}
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#endif // defined(_SKIA_SUPPORT_)
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return ToFPDFStatus(pContext->m_pRenderer->GetStatus());
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}
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FPDF_EXPORT void FPDF_CALLCONV FPDF_RenderPage_Close(FPDF_PAGE page) {
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CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
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if (pPage)
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pPage->ClearRenderContext();
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}
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