1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxge/win32/cpsoutput.h"
8
9 #include <algorithm>
10
11 #include "core/fxcrt/fx_system.h"
12 #include "third_party/base/span.h"
13
CPSOutput(HDC hDC,OutputMode mode)14 CPSOutput::CPSOutput(HDC hDC, OutputMode mode) : m_hDC(hDC), m_mode(mode) {}
15
16 CPSOutput::~CPSOutput() = default;
17
WriteBlock(const void * str,size_t len)18 bool CPSOutput::WriteBlock(const void* str, size_t len) {
19 pdfium::span<const uint8_t> input(static_cast<const uint8_t*>(str), len);
20 while (!input.empty()) {
21 uint8_t buffer[1026];
22 size_t send_len = std::min<size_t>(input.size(), 1024);
23 *(reinterpret_cast<uint16_t*>(buffer)) = static_cast<uint16_t>(send_len);
24 memcpy(buffer + 2, input.data(), send_len);
25
26 switch (m_mode) {
27 case OutputMode::kExtEscape:
28 ExtEscape(m_hDC, PASSTHROUGH, send_len + 2,
29 reinterpret_cast<const char*>(buffer), 0, nullptr);
30 break;
31 case OutputMode::kGdiComment:
32 GdiComment(m_hDC, send_len + 2, buffer);
33 break;
34 }
35 input = input.subspan(send_len);
36 }
37 return true;
38 }
39
WriteString(ByteStringView str)40 bool CPSOutput::WriteString(ByteStringView str) {
41 return WriteBlock(str.unterminated_c_str(), str.GetLength());
42 }
43