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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 <algorithm>
#include "core/fxge/cfx_graphstatedata.h"
#include "core/fxge/cfx_pathdata.h"
#include "core/fxge/cfx_renderdevice.h"
#include "fxbarcode/BC_TwoDimWriter.h"
#include "fxbarcode/BC_Writer.h"
#include "fxbarcode/common/BC_CommonBitMatrix.h"
#include "third_party/base/numerics/safe_math.h"
#include "third_party/base/ptr_util.h"
CBC_TwoDimWriter::CBC_TwoDimWriter() : m_iCorrectLevel(1), m_bFixedSize(true) {}
CBC_TwoDimWriter::~CBC_TwoDimWriter() {}
int32_t CBC_TwoDimWriter::GetErrorCorrectionLevel() const {
return m_iCorrectLevel;
}
bool CBC_TwoDimWriter::RenderResult(uint8_t* code,
int32_t codeWidth,
int32_t codeHeight) {
m_inputWidth = codeWidth;
m_inputHeight = codeHeight;
int32_t tempWidth = m_inputWidth + 2;
int32_t tempHeight = m_inputHeight + 2;
float moduleHSize = std::min(m_ModuleWidth, m_ModuleHeight);
moduleHSize = std::min(moduleHSize, 8.0f);
moduleHSize = std::max(moduleHSize, 1.0f);
pdfium::base::CheckedNumeric<int32_t> scaledWidth = tempWidth;
pdfium::base::CheckedNumeric<int32_t> scaledHeight = tempHeight;
scaledWidth *= moduleHSize;
scaledHeight *= moduleHSize;
m_outputWidth = scaledWidth.ValueOrDie();
m_outputHeight = scaledHeight.ValueOrDie();
if (m_bFixedSize) {
if (m_Width < m_outputWidth || m_Height < m_outputHeight) {
return false;
}
} else {
if (m_Width > m_outputWidth || m_Height > m_outputHeight) {
int32_t width_factor = static_cast<int32_t>(
floor(static_cast<float>(m_Width) / m_outputWidth));
int32_t height_factor = static_cast<int32_t>(
floor(static_cast<float>(m_Height) / m_outputHeight));
width_factor = std::max(width_factor, 1);
height_factor = std::max(height_factor, 1);
m_outputWidth *= width_factor;
m_outputHeight *= height_factor;
}
}
m_multiX =
static_cast<int32_t>(ceil(static_cast<float>(m_outputWidth) / tempWidth));
m_multiY = static_cast<int32_t>(
ceil(static_cast<float>(m_outputHeight) / tempHeight));
if (m_bFixedSize) {
m_multiX = std::min(m_multiX, m_multiY);
m_multiY = m_multiX;
}
m_leftPadding = std::max((m_Width - m_outputWidth) / 2, 0);
m_topPadding = std::max((m_Height - m_outputHeight) / 2, 0);
m_output = pdfium::MakeUnique<CBC_CommonBitMatrix>();
m_output->Init(m_inputWidth, m_inputHeight);
for (int32_t y = 0; y < m_inputHeight; ++y) {
for (int32_t x = 0; x < m_inputWidth; ++x) {
if (code[x + y * m_inputWidth] == 1)
m_output->Set(x, y);
}
}
return true;
}
void CBC_TwoDimWriter::RenderDeviceResult(CFX_RenderDevice* device,
const CFX_Matrix* matrix) {
ASSERT(m_output);
CFX_GraphStateData stateData;
CFX_PathData path;
path.AppendRect(0, 0, (float)m_Width, (float)m_Height);
device->DrawPath(&path, matrix, &stateData, m_backgroundColor,
m_backgroundColor, FXFILL_ALTERNATE);
int32_t leftPos = m_leftPadding;
int32_t topPos = m_topPadding;
CFX_Matrix matri = *matrix;
if (m_Width < m_outputWidth && m_Height < m_outputHeight) {
CFX_Matrix matriScale(static_cast<float>(m_Width) / m_outputWidth, 0.0, 0.0,
static_cast<float>(m_Height) / m_outputHeight, 0.0,
0.0);
matriScale.Concat(*matrix);
matri = matriScale;
}
CFX_GraphStateData data;
for (int32_t x = 0; x < m_inputWidth; x++) {
for (int32_t y = 0; y < m_inputHeight; y++) {
if (m_output->Get(x, y)) {
// In the output, each module is shifted by 1 due to the one module
// padding added to create quiet areas.
int start_x_output = x + 1;
int end_x_output = x + 2;
int start_y_output = y + 1;
int end_y_output = y + 2;
CFX_PathData rect;
rect.AppendRect(leftPos + start_x_output * m_multiX,
topPos + start_y_output * m_multiY,
leftPos + end_x_output * m_multiX,
topPos + end_y_output * m_multiY);
device->DrawPath(&rect, &matri, &data, m_barColor, 0, FXFILL_WINDING);
}
}
}
}
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