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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 "fpdfsdk/pdfwindow/cpwl_icon.h"
#include <algorithm>
#include <sstream>
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "fpdfsdk/pdfwindow/cpwl_wnd.h"
CPWL_Icon::CPWL_Icon() : m_pPDFStream(nullptr), m_pIconFit(nullptr) {}
CPWL_Icon::~CPWL_Icon() {}
std::pair<float, float> CPWL_Icon::GetImageSize() {
if (!m_pPDFStream)
return {0.0f, 0.0f};
CPDF_Dictionary* pDict = m_pPDFStream->GetDict();
if (!pDict)
return {0.0f, 0.0f};
CFX_FloatRect rect = pDict->GetRectFor("BBox");
return {rect.right - rect.left, rect.top - rect.bottom};
}
CFX_Matrix CPWL_Icon::GetImageMatrix() {
if (!m_pPDFStream)
return CFX_Matrix();
if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict())
return pDict->GetMatrixFor("Matrix");
return CFX_Matrix();
}
CFX_ByteString CPWL_Icon::GetImageAlias() {
if (!m_pPDFStream)
return CFX_ByteString();
if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict())
return pDict->GetStringFor("Name");
return CFX_ByteString();
}
std::pair<float, float> CPWL_Icon::GetIconPosition() {
if (!m_pIconFit)
return {0.0f, 0.0f};
CPDF_Array* pA =
m_pIconFit->GetDict() ? m_pIconFit->GetDict()->GetArrayFor("A") : nullptr;
if (!pA)
return {0.0f, 0.0f};
size_t dwCount = pA->GetCount();
return {dwCount > 0 ? pA->GetNumberAt(0) : 0.0f,
dwCount > 1 ? pA->GetNumberAt(1) : 0.0f};
}
std::pair<float, float> CPWL_Icon::GetScale() {
float fHScale = 1.0f;
float fVScale = 1.0f;
if (!m_pPDFStream)
return {fHScale, fVScale};
CFX_FloatRect rcPlate = GetClientRect();
float fPlateWidth = rcPlate.right - rcPlate.left;
float fPlateHeight = rcPlate.top - rcPlate.bottom;
float fImageWidth;
float fImageHeight;
std::tie(fImageWidth, fImageHeight) = GetImageSize();
int32_t nScaleMethod = m_pIconFit ? m_pIconFit->GetScaleMethod() : 0;
switch (nScaleMethod) {
default:
case 0:
fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
break;
case 1:
if (fPlateWidth < fImageWidth)
fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
if (fPlateHeight < fImageHeight)
fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
break;
case 2:
if (fPlateWidth > fImageWidth)
fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
if (fPlateHeight > fImageHeight)
fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
break;
case 3:
break;
}
float fMinScale;
if (m_pIconFit && m_pIconFit->IsProportionalScale()) {
fMinScale = std::min(fHScale, fVScale);
fHScale = fMinScale;
fVScale = fMinScale;
}
return {fHScale, fVScale};
}
std::pair<float, float> CPWL_Icon::GetImageOffset() {
float fLeft;
float fBottom;
std::tie(fLeft, fBottom) = GetIconPosition();
float fImageWidth;
float fImageHeight;
std::tie(fImageWidth, fImageHeight) = GetImageSize();
float fHScale, fVScale;
std::tie(fHScale, fVScale) = GetScale();
float fImageFactWidth = fImageWidth * fHScale;
float fImageFactHeight = fImageHeight * fVScale;
CFX_FloatRect rcPlate = GetClientRect();
float fPlateWidth = rcPlate.right - rcPlate.left;
float fPlateHeight = rcPlate.top - rcPlate.bottom;
return {(fPlateWidth - fImageFactWidth) * fLeft,
(fPlateHeight - fImageFactHeight) * fBottom};
}
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