summaryrefslogtreecommitdiff
path: root/xfa/fgas/layout/cfx_break.cpp
diff options
context:
space:
mode:
authorDan Sinclair <dsinclair@chromium.org>2017-03-16 11:47:20 -0400
committerChromium commit bot <commit-bot@chromium.org>2017-03-16 18:21:03 +0000
commite533b93601c7e9eb328619681a78c188d1a89191 (patch)
tree0e3741cec1296a39e478c67eeac3ecc9c000fc24 /xfa/fgas/layout/cfx_break.cpp
parentc9819a972830e9d1210d9d8f5c81d9f03f7c90a9 (diff)
downloadpdfium-e533b93601c7e9eb328619681a78c188d1a89191.tar.xz
Create common base class for TxtBreak and RTFBreak.
This CL starts extracting common members between the two break classes into a common base class. This also normalizes some of the member names to be the same across classes. Change-Id: I7f4e5065f2dac79eb4ebba397458236cc0609d38 Reviewed-on: https://pdfium-review.googlesource.com/3058 Reviewed-by: Nicolás Peña <npm@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
Diffstat (limited to 'xfa/fgas/layout/cfx_break.cpp')
-rw-r--r--xfa/fgas/layout/cfx_break.cpp138
1 files changed, 138 insertions, 0 deletions
diff --git a/xfa/fgas/layout/cfx_break.cpp b/xfa/fgas/layout/cfx_break.cpp
new file mode 100644
index 0000000000..8be1d1704a
--- /dev/null
+++ b/xfa/fgas/layout/cfx_break.cpp
@@ -0,0 +1,138 @@
+// Copyright 2017 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 "xfa/fgas/layout/cfx_break.h"
+
+#include <algorithm>
+
+namespace {
+
+const int kMinimumTabWidth = 160000;
+
+} // namespace
+
+CFX_Break::CFX_Break(uint32_t dwLayoutStyles)
+ : m_eCharType(FX_CHARTYPE_Unknown),
+ m_bSingleLine(false),
+ m_bCombText(false),
+ m_dwLayoutStyles(dwLayoutStyles),
+ m_iLineStart(0),
+ m_iLineWidth(2000000),
+ m_wParagraphBreakChar(L'\n'),
+ m_iFontSize(240),
+ m_iTabWidth(720000),
+ m_iHorizontalScale(100),
+ m_iVerticalScale(100),
+ m_iTolerance(0),
+ m_iCharSpace(0),
+ m_iDefChar(0),
+ m_wDefChar(0xFEFF),
+ m_pFont(nullptr),
+ m_pCurLine(nullptr),
+ m_iReadyLineIndex(-1) {
+ m_pCurLine = &m_Line[0];
+}
+
+CFX_Break::~CFX_Break() {}
+
+void CFX_Break::SetLayoutStyles(uint32_t dwLayoutStyles) {
+ m_dwLayoutStyles = dwLayoutStyles;
+ m_bSingleLine = (m_dwLayoutStyles & FX_LAYOUTSTYLE_SingleLine) != 0;
+ m_bCombText = (m_dwLayoutStyles & FX_LAYOUTSTYLE_CombText) != 0;
+
+ ResetArabicContext();
+}
+
+void CFX_Break::SetHorizontalScale(int32_t iScale) {
+ iScale = std::max(iScale, 0);
+ if (m_iHorizontalScale == iScale)
+ return;
+
+ SetBreakStatus();
+ m_iHorizontalScale = iScale;
+}
+
+void CFX_Break::SetVerticalScale(int32_t iScale) {
+ if (iScale < 0)
+ iScale = 0;
+ if (m_iVerticalScale == iScale)
+ return;
+
+ SetBreakStatus();
+ m_iVerticalScale = iScale;
+}
+
+void CFX_Break::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont) {
+ if (!pFont || pFont == m_pFont)
+ return;
+
+ SetBreakStatus();
+ m_pFont = pFont;
+ FontChanged();
+}
+
+void CFX_Break::SetFontSize(float fFontSize) {
+ int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
+ if (m_iFontSize == iFontSize)
+ return;
+
+ SetBreakStatus();
+ m_iFontSize = iFontSize;
+ FontChanged();
+}
+
+void CFX_Break::FontChanged() {
+ m_iDefChar = 0;
+ if (!m_pFont || m_wDefChar == 0xFEFF)
+ return;
+
+ m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
+ m_iDefChar *= m_iFontSize;
+}
+
+void CFX_Break::SetTabWidth(float fTabWidth) {
+ // Note, the use of max here was only done in the TxtBreak code. Leaving this
+ // in for the RTFBreak code for consistency. If we see issues with tab widths
+ // we may need to fix this.
+ m_iTabWidth = std::max(FXSYS_round(fTabWidth * 20000.0f), kMinimumTabWidth);
+}
+
+void CFX_Break::SetDefaultChar(wchar_t wch) {
+ m_wDefChar = wch;
+ m_iDefChar = 0;
+ if (m_wDefChar == 0xFEFF || !m_pFont)
+ return;
+
+ m_pFont->GetCharWidth(m_wDefChar, m_iDefChar, false);
+ if (m_iDefChar < 0)
+ m_iDefChar = 0;
+ else
+ m_iDefChar *= m_iFontSize;
+}
+
+void CFX_Break::SetParagraphBreakChar(wchar_t wch) {
+ if (wch != L'\r' && wch != L'\n')
+ return;
+ m_wParagraphBreakChar = wch;
+}
+
+void CFX_Break::SetLineBreakTolerance(float fTolerance) {
+ m_iTolerance = FXSYS_round(fTolerance * 20000.0f);
+}
+
+void CFX_Break::SetCharSpace(float fCharSpace) {
+ m_iCharSpace = FXSYS_round(fCharSpace * 20000.0f);
+}
+
+void CFX_Break::SetLineBoundary(float fLineStart, float fLineEnd) {
+ if (fLineStart > fLineEnd)
+ return;
+
+ m_iLineStart = FXSYS_round(fLineStart * 20000.0f);
+ m_iLineWidth = FXSYS_round(fLineEnd * 20000.0f);
+ m_pCurLine->m_iStart = std::min(m_pCurLine->m_iStart, m_iLineWidth);
+ m_pCurLine->m_iStart = std::max(m_pCurLine->m_iStart, m_iLineStart);
+}