95 lines
3.7 KiB
C++
95 lines
3.7 KiB
C++
// Copyright 2014 PDFium Authors. All rights reserved.
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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 "core/fpdfapi/cpdf_pagerendercontext.h"
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
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#include "core/fxcrt/fx_memory.h"
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#include "core/fxge/cfx_fxgedevice.h"
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#include "core/fxge/cfx_renderdevice.h"
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#include "fpdfsdk/fsdk_define.h"
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#include "fpdfsdk/fsdk_pauseadapter.h"
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#include "public/fpdfview.h"
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#include "third_party/base/ptr_util.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::Ready == FPDF_RENDER_READER,
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"CPDF_ProgressiveRenderer::Ready value mismatch");
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static_assert(CPDF_ProgressiveRenderer::ToBeContinued ==
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FPDF_RENDER_TOBECOUNTINUED,
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"CPDF_ProgressiveRenderer::ToBeContinued value mismatch");
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static_assert(CPDF_ProgressiveRenderer::Done == FPDF_RENDER_DONE,
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"CPDF_ProgressiveRenderer::Done value mismatch");
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static_assert(CPDF_ProgressiveRenderer::Failed == FPDF_RENDER_FAILED,
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"CPDF_ProgressiveRenderer::Failed value mismatch");
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DLLEXPORT int STDCALL 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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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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CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
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pPage->SetRenderContext(pdfium::WrapUnique(pContext));
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CFX_FxgeDevice* pDevice = new CFX_FxgeDevice;
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pContext->m_pDevice.reset(pDevice);
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CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
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pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
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IFSDK_PAUSE_Adapter IPauseAdapter(pause);
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FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
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rotate, flags, false, &IPauseAdapter);
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if (pContext->m_pRenderer) {
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return CPDF_ProgressiveRenderer::ToFPDFStatus(
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pContext->m_pRenderer->GetStatus());
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}
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return FPDF_RENDER_FAILED;
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}
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DLLEXPORT int STDCALL 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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CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
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if (pContext && pContext->m_pRenderer) {
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IFSDK_PAUSE_Adapter IPauseAdapter(pause);
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pContext->m_pRenderer->Continue(&IPauseAdapter);
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return CPDF_ProgressiveRenderer::ToFPDFStatus(
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pContext->m_pRenderer->GetStatus());
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}
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return FPDF_RENDER_FAILED;
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}
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DLLEXPORT void STDCALL 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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return;
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CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
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if (!pContext)
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return;
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pContext->m_pDevice->RestoreState(false);
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pPage->SetRenderContext(nullptr);
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}
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