// 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 "fpdfsdk/pdfwindow/PWL_Icon.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
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#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
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#include "fpdfsdk/pdfwindow/PWL_Utils.h"
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#include "fpdfsdk/pdfwindow/PWL_Wnd.h"
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CPWL_Image::CPWL_Image() : m_pPDFStream(nullptr) {}
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CPWL_Image::~CPWL_Image() {}
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CFX_ByteString CPWL_Image::GetImageAppStream() {
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CFX_ByteTextBuf sAppStream;
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CFX_ByteString sAlias = GetImageAlias();
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CFX_FloatRect rcPlate = GetClientRect();
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CFX_Matrix mt;
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mt.SetReverse(GetImageMatrix());
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FX_FLOAT fHScale = 1.0f;
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FX_FLOAT fVScale = 1.0f;
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GetScale(fHScale, fVScale);
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FX_FLOAT fx = 0.0f;
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FX_FLOAT fy = 0.0f;
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GetImageOffset(fx, fy);
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if (m_pPDFStream && sAlias.GetLength() > 0) {
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sAppStream << "q\n";
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sAppStream << rcPlate.left << " " << rcPlate.bottom << " "
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<< rcPlate.right - rcPlate.left << " "
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<< rcPlate.top - rcPlate.bottom << " re W n\n";
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sAppStream << fHScale << " 0 0 " << fVScale << " " << rcPlate.left + fx
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<< " " << rcPlate.bottom + fy << " cm\n";
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sAppStream << mt.GetA() << " " << mt.GetB() << " " << mt.GetC() << " "
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<< mt.GetD() << " " << mt.GetE() << " " << mt.GetF() << " cm\n";
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sAppStream << "0 g 0 G 1 w /" << sAlias.AsStringC() << " Do\n"
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<< "Q\n";
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}
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return sAppStream.MakeString();
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}
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void CPWL_Image::SetPDFStream(CPDF_Stream* pStream) {
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m_pPDFStream = pStream;
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}
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CPDF_Stream* CPWL_Image::GetPDFStream() {
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return m_pPDFStream;
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}
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void CPWL_Image::GetImageSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight) {
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fWidth = 0.0f;
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fHeight = 0.0f;
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if (m_pPDFStream) {
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if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict()) {
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CFX_FloatRect rect = pDict->GetRectBy("BBox");
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fWidth = rect.right - rect.left;
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fHeight = rect.top - rect.bottom;
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}
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}
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}
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CFX_Matrix CPWL_Image::GetImageMatrix() {
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if (m_pPDFStream) {
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if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict()) {
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return pDict->GetMatrixBy("Matrix");
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}
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}
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return CFX_Matrix();
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}
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CFX_ByteString CPWL_Image::GetImageAlias() {
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if (!m_sImageAlias.IsEmpty())
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return m_sImageAlias;
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if (m_pPDFStream) {
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if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict()) {
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return pDict->GetStringBy("Name");
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}
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}
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return CFX_ByteString();
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}
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void CPWL_Image::SetImageAlias(const FX_CHAR* sImageAlias) {
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m_sImageAlias = sImageAlias;
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}
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void CPWL_Image::GetScale(FX_FLOAT& fHScale, FX_FLOAT& fVScale) {
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fHScale = 1.0f;
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fVScale = 1.0f;
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}
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void CPWL_Image::GetImageOffset(FX_FLOAT& x, FX_FLOAT& y) {
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x = 0.0f;
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y = 0.0f;
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}
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CPWL_Icon::CPWL_Icon() : m_pIconFit(nullptr) {}
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CPWL_Icon::~CPWL_Icon() {}
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CPDF_IconFit* CPWL_Icon::GetIconFit() {
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return m_pIconFit;
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}
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int32_t CPWL_Icon::GetScaleMethod() {
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if (m_pIconFit)
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return m_pIconFit->GetScaleMethod();
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return 0;
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}
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FX_BOOL CPWL_Icon::IsProportionalScale() {
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if (m_pIconFit)
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return m_pIconFit->IsProportionalScale();
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return FALSE;
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}
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void CPWL_Icon::GetIconPosition(FX_FLOAT& fLeft, FX_FLOAT& fBottom) {
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if (m_pIconFit) {
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fLeft = 0.0f;
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fBottom = 0.0f;
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CPDF_Array* pA = m_pIconFit->GetDict()
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? m_pIconFit->GetDict()->GetArrayBy("A")
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: nullptr;
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if (pA) {
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size_t dwCount = pA->GetCount();
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if (dwCount > 0)
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fLeft = pA->GetNumberAt(0);
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if (dwCount > 1)
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fBottom = pA->GetNumberAt(1);
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}
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} else {
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fLeft = 0.0f;
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fBottom = 0.0f;
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}
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}
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void CPWL_Icon::GetScale(FX_FLOAT& fHScale, FX_FLOAT& fVScale) {
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fHScale = 1.0f;
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fVScale = 1.0f;
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if (m_pPDFStream) {
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FX_FLOAT fImageWidth, fImageHeight;
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FX_FLOAT fPlateWidth, fPlateHeight;
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CFX_FloatRect rcPlate = GetClientRect();
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fPlateWidth = rcPlate.right - rcPlate.left;
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fPlateHeight = rcPlate.top - rcPlate.bottom;
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GetImageSize(fImageWidth, fImageHeight);
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int32_t nScaleMethod = GetScaleMethod();
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switch (nScaleMethod) {
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default:
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case 0:
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fHScale = fPlateWidth / PWL_MAX(fImageWidth, 1.0f);
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fVScale = fPlateHeight / PWL_MAX(fImageHeight, 1.0f);
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break;
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case 1:
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if (fPlateWidth < fImageWidth)
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fHScale = fPlateWidth / PWL_MAX(fImageWidth, 1.0f);
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if (fPlateHeight < fImageHeight)
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fVScale = fPlateHeight / PWL_MAX(fImageHeight, 1.0f);
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break;
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case 2:
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if (fPlateWidth > fImageWidth)
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fHScale = fPlateWidth / PWL_MAX(fImageWidth, 1.0f);
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if (fPlateHeight > fImageHeight)
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fVScale = fPlateHeight / PWL_MAX(fImageHeight, 1.0f);
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break;
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case 3:
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break;
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}
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FX_FLOAT fMinScale;
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if (IsProportionalScale()) {
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fMinScale = PWL_MIN(fHScale, fVScale);
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fHScale = fMinScale;
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fVScale = fMinScale;
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}
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}
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}
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void CPWL_Icon::GetImageOffset(FX_FLOAT& x, FX_FLOAT& y) {
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FX_FLOAT fLeft, fBottom;
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GetIconPosition(fLeft, fBottom);
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x = 0.0f;
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y = 0.0f;
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FX_FLOAT fImageWidth, fImageHeight;
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GetImageSize(fImageWidth, fImageHeight);
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FX_FLOAT fHScale, fVScale;
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GetScale(fHScale, fVScale);
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FX_FLOAT fImageFactWidth = fImageWidth * fHScale;
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FX_FLOAT fImageFactHeight = fImageHeight * fVScale;
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FX_FLOAT fPlateWidth, fPlateHeight;
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CFX_FloatRect rcPlate = GetClientRect();
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fPlateWidth = rcPlate.right - rcPlate.left;
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fPlateHeight = rcPlate.top - rcPlate.bottom;
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x = (fPlateWidth - fImageFactWidth) * fLeft;
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y = (fPlateHeight - fImageFactHeight) * fBottom;
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}
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