| // 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 |
| // Original code is licensed as follows: |
| /* |
| * Copyright 2011 ZXing authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "fxbarcode/oned/BC_OneDimWriter.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <vector> |
| |
| #include "build/build_config.h" |
| #include "core/fxge/cfx_defaultrenderdevice.h" |
| #include "core/fxge/cfx_fillrenderoptions.h" |
| #include "core/fxge/cfx_font.h" |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "core/fxge/cfx_unicodeencodingex.h" |
| #include "core/fxge/text_char_pos.h" |
| #include "fxbarcode/BC_Writer.h" |
| |
| // static |
| bool CBC_OneDimWriter::HasValidContentSize(WideStringView contents) { |
| // Limit the size of 1D barcodes. Typical 1D barcodes are short so this should |
| // be sufficient for most use cases. |
| static constexpr size_t kMaxInputLengthBytes = 8192; |
| |
| size_t size = contents.GetLength(); |
| return size > 0 && size <= kMaxInputLengthBytes; |
| } |
| |
| CBC_OneDimWriter::CBC_OneDimWriter() = default; |
| |
| CBC_OneDimWriter::~CBC_OneDimWriter() = default; |
| |
| void CBC_OneDimWriter::SetPrintChecksum(bool checksum) { |
| m_bPrintChecksum = checksum; |
| } |
| |
| void CBC_OneDimWriter::SetDataLength(int32_t length) { |
| m_iDataLenth = length; |
| } |
| |
| void CBC_OneDimWriter::SetCalcChecksum(bool state) { |
| m_bCalcChecksum = state; |
| } |
| |
| bool CBC_OneDimWriter::SetFont(CFX_Font* cFont) { |
| if (!cFont) |
| return false; |
| |
| m_pFont = cFont; |
| return true; |
| } |
| |
| void CBC_OneDimWriter::SetFontSize(float size) { |
| m_fFontSize = size; |
| } |
| |
| void CBC_OneDimWriter::SetFontStyle(int32_t style) { |
| m_iFontStyle = style; |
| } |
| |
| void CBC_OneDimWriter::SetFontColor(FX_ARGB color) { |
| m_fontColor = color; |
| } |
| |
| uint8_t* CBC_OneDimWriter::EncodeWithHint(const ByteString& contents, |
| BCFORMAT format, |
| int32_t& outWidth, |
| int32_t& outHeight, |
| int32_t hints) { |
| outHeight = 1; |
| return EncodeImpl(contents, outWidth); |
| } |
| |
| uint8_t* CBC_OneDimWriter::Encode(const ByteString& contents, |
| BCFORMAT format, |
| int32_t& outWidth, |
| int32_t& outHeight) { |
| return EncodeWithHint(contents, format, outWidth, outHeight, 0); |
| } |
| |
| int32_t CBC_OneDimWriter::AppendPattern(uint8_t* target, |
| int32_t pos, |
| const int8_t* pattern, |
| int32_t patternLength, |
| bool startColor) { |
| bool color = startColor; |
| int32_t numAdded = 0; |
| for (int32_t i = 0; i < patternLength; i++) { |
| for (int32_t j = 0; j < pattern[i]; j++) |
| target[pos++] = color ? 1 : 0; |
| numAdded += pattern[i]; |
| color = !color; |
| } |
| return numAdded; |
| } |
| |
| void CBC_OneDimWriter::CalcTextInfo(const ByteString& text, |
| TextCharPos* charPos, |
| CFX_Font* cFont, |
| float geWidth, |
| int32_t fontSize, |
| float& charsLen) { |
| std::unique_ptr<CFX_UnicodeEncodingEx> encoding = |
| FX_CreateFontEncodingEx(cFont); |
| |
| const size_t length = text.GetLength(); |
| std::vector<uint32_t> charcodes(length); |
| float charWidth = 0; |
| for (size_t i = 0; i < length; ++i) { |
| charcodes[i] = encoding->CharCodeFromUnicode(text[i]); |
| int32_t glyph_code = encoding->GlyphFromCharCode(charcodes[i]); |
| int glyph_value = cFont->GetGlyphWidth(glyph_code); |
| float temp = glyph_value * fontSize / 1000.0; |
| charWidth += temp; |
| } |
| charsLen = charWidth; |
| float leftPositon = (float)(geWidth - charsLen) / 2.0f; |
| if (leftPositon < 0 && geWidth == 0) { |
| leftPositon = 0; |
| } |
| float penX = 0.0; |
| float penY = (float)abs(cFont->GetDescent()) * (float)fontSize / 1000.0f; |
| float left = leftPositon; |
| float top = 0.0; |
| charPos[0].m_Origin = CFX_PointF(penX + left, penY + top); |
| charPos[0].m_GlyphIndex = encoding->GlyphFromCharCode(charcodes[0]); |
| charPos[0].m_FontCharWidth = cFont->GetGlyphWidth(charPos[0].m_GlyphIndex); |
| #if defined(OS_APPLE) |
| charPos[0].m_ExtGID = charPos[0].m_GlyphIndex; |
| #endif |
| penX += (float)(charPos[0].m_FontCharWidth) * (float)fontSize / 1000.0f; |
| for (size_t i = 1; i < length; i++) { |
| charPos[i].m_Origin = CFX_PointF(penX + left, penY + top); |
| charPos[i].m_GlyphIndex = encoding->GlyphFromCharCode(charcodes[i]); |
| charPos[i].m_FontCharWidth = cFont->GetGlyphWidth(charPos[i].m_GlyphIndex); |
| #if defined(OS_APPLE) |
| charPos[i].m_ExtGID = charPos[i].m_GlyphIndex; |
| #endif |
| penX += (float)(charPos[i].m_FontCharWidth) * (float)fontSize / 1000.0f; |
| } |
| } |
| |
| void CBC_OneDimWriter::ShowDeviceChars(CFX_RenderDevice* device, |
| const CFX_Matrix& matrix, |
| const ByteString str, |
| float geWidth, |
| TextCharPos* pCharPos, |
| float locX, |
| float locY, |
| int32_t barWidth) { |
| int32_t iFontSize = static_cast<int32_t>(fabs(m_fFontSize)); |
| int32_t iTextHeight = iFontSize + 1; |
| CFX_FloatRect rect((float)locX, (float)locY, (float)(locX + geWidth), |
| (float)(locY + iTextHeight)); |
| if (geWidth != m_Width) { |
| rect.right -= 1; |
| } |
| FX_RECT re = matrix.TransformRect(rect).GetOuterRect(); |
| device->FillRect(re, kBackgroundColor); |
| CFX_Matrix affine_matrix(1.0, 0.0, 0.0, -1.0, (float)locX, |
| (float)(locY + iFontSize)); |
| affine_matrix.Concat(matrix); |
| device->DrawNormalText(str.GetLength(), pCharPos, m_pFont.Get(), |
| static_cast<float>(iFontSize), affine_matrix, |
| m_fontColor, GetTextRenderOptions()); |
| } |
| |
| bool CBC_OneDimWriter::ShowChars(WideStringView contents, |
| CFX_RenderDevice* device, |
| const CFX_Matrix& matrix, |
| int32_t barWidth, |
| int32_t multiple) { |
| if (!device || !m_pFont) |
| return false; |
| |
| ByteString str = FX_UTF8Encode(contents); |
| std::vector<TextCharPos> charpos(str.GetLength()); |
| float charsLen = 0; |
| float geWidth = 0; |
| if (m_locTextLoc == BC_TEXT_LOC_ABOVEEMBED || |
| m_locTextLoc == BC_TEXT_LOC_BELOWEMBED) { |
| geWidth = 0; |
| } else if (m_locTextLoc == BC_TEXT_LOC_ABOVE || |
| m_locTextLoc == BC_TEXT_LOC_BELOW) { |
| geWidth = (float)barWidth; |
| } |
| int32_t iFontSize = static_cast<int32_t>(fabs(m_fFontSize)); |
| int32_t iTextHeight = iFontSize + 1; |
| CalcTextInfo(str, charpos.data(), m_pFont.Get(), geWidth, iFontSize, |
| charsLen); |
| if (charsLen < 1) |
| return true; |
| |
| int32_t locX = 0; |
| int32_t locY = 0; |
| switch (m_locTextLoc) { |
| case BC_TEXT_LOC_ABOVEEMBED: |
| locX = static_cast<int32_t>(barWidth - charsLen) / 2; |
| locY = 0; |
| geWidth = charsLen; |
| break; |
| case BC_TEXT_LOC_ABOVE: |
| locX = 0; |
| locY = 0; |
| geWidth = (float)barWidth; |
| break; |
| case BC_TEXT_LOC_BELOWEMBED: |
| locX = static_cast<int32_t>(barWidth - charsLen) / 2; |
| locY = m_Height - iTextHeight; |
| geWidth = charsLen; |
| break; |
| case BC_TEXT_LOC_BELOW: |
| default: |
| locX = 0; |
| locY = m_Height - iTextHeight; |
| geWidth = (float)barWidth; |
| break; |
| } |
| ShowDeviceChars(device, matrix, str, geWidth, charpos.data(), (float)locX, |
| (float)locY, barWidth); |
| return true; |
| } |
| |
| bool CBC_OneDimWriter::RenderDeviceResult(CFX_RenderDevice* device, |
| const CFX_Matrix& matrix, |
| WideStringView contents) { |
| if (m_output.empty()) |
| return false; |
| |
| CFX_GraphStateData stateData; |
| CFX_PathData path; |
| path.AppendRect(0, 0, static_cast<float>(m_Width), |
| static_cast<float>(m_Height)); |
| device->DrawPath(&path, &matrix, &stateData, kBackgroundColor, |
| kBackgroundColor, CFX_FillRenderOptions::EvenOddOptions()); |
| CFX_Matrix scaledMatrix(m_outputHScale, 0.0, 0.0, |
| static_cast<float>(m_Height), 0.0, 0.0); |
| scaledMatrix.Concat(matrix); |
| for (const auto& rect : m_output) { |
| CFX_GraphStateData data; |
| device->DrawPath(&rect, &scaledMatrix, &data, kBarColor, 0, |
| CFX_FillRenderOptions::WindingOptions()); |
| } |
| |
| return m_locTextLoc == BC_TEXT_LOC_NONE || !contents.Contains(' ') || |
| ShowChars(contents, device, matrix, m_barWidth, m_multiple); |
| } |
| |
| bool CBC_OneDimWriter::RenderResult(WideStringView contents, |
| uint8_t* code, |
| int32_t codeLength) { |
| if (codeLength < 1) |
| return false; |
| |
| m_ModuleHeight = std::max(m_ModuleHeight, 20); |
| const int32_t codeOldLength = codeLength; |
| const int32_t leftPadding = m_bLeftPadding ? 7 : 0; |
| const int32_t rightPadding = m_bRightPadding ? 7 : 0; |
| codeLength += leftPadding; |
| codeLength += rightPadding; |
| m_outputHScale = |
| m_Width > 0 ? static_cast<float>(m_Width) / static_cast<float>(codeLength) |
| : 1.0; |
| m_multiple = 1; |
| const int32_t outputWidth = codeLength; |
| m_barWidth = m_Width; |
| |
| m_output.clear(); |
| m_output.reserve(codeOldLength * m_multiple); |
| for (int32_t inputX = 0, outputX = leftPadding * m_multiple; |
| inputX < codeOldLength; ++inputX, outputX += m_multiple) { |
| if (code[inputX] != 1) |
| continue; |
| |
| if (outputX >= outputWidth) |
| return true; |
| |
| if (outputX + m_multiple > outputWidth && outputWidth - outputX > 0) { |
| RenderVerticalBars(outputX, outputWidth - outputX); |
| return true; |
| } |
| |
| RenderVerticalBars(outputX, m_multiple); |
| } |
| return true; |
| } |
| |
| void CBC_OneDimWriter::RenderVerticalBars(int32_t outputX, int32_t width) { |
| for (int i = 0; i < width; ++i) { |
| float x = outputX + i; |
| m_output.emplace_back(); |
| m_output.back().AppendRect(x, 0.0f, x + 1, 1.0f); |
| } |
| } |