140 lines
3.8 KiB
C++
140 lines
3.8 KiB
C++
// Copyright 2017 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fxfa/cxfa_ffline.h"
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#include "xfa/fxfa/parser/cxfa_edge.h"
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#include "xfa/fxfa/parser/cxfa_line.h"
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#include "xfa/fxfa/parser/cxfa_value.h"
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#include "xfa/fxgraphics/cxfa_gecolor.h"
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#include "xfa/fxgraphics/cxfa_gepath.h"
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#include "xfa/fxgraphics/cxfa_graphics.h"
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namespace {
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CFX_GraphStateData::LineCap LineCapToFXGE(XFA_AttributeValue iLineCap) {
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switch (iLineCap) {
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case XFA_AttributeValue::Round:
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return CFX_GraphStateData::LineCapRound;
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case XFA_AttributeValue::Butt:
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return CFX_GraphStateData::LineCapButt;
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default:
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break;
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}
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return CFX_GraphStateData::LineCapSquare;
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}
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} // namespace
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CXFA_FFLine::CXFA_FFLine(CXFA_Node* pNode) : CXFA_FFWidget(pNode) {}
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CXFA_FFLine::~CXFA_FFLine() {}
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void CXFA_FFLine::GetRectFromHand(CFX_RectF& rect,
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XFA_AttributeValue iHand,
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float fLineWidth) {
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float fHalfWidth = fLineWidth / 2.0f;
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if (rect.height < 1.0f) {
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switch (iHand) {
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case XFA_AttributeValue::Left:
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rect.top -= fHalfWidth;
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break;
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case XFA_AttributeValue::Right:
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rect.top += fHalfWidth;
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break;
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case XFA_AttributeValue::Even:
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break;
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default:
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NOTREACHED();
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break;
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}
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} else if (rect.width < 1.0f) {
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switch (iHand) {
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case XFA_AttributeValue::Left:
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rect.left += fHalfWidth;
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break;
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case XFA_AttributeValue::Right:
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rect.left += fHalfWidth;
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break;
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case XFA_AttributeValue::Even:
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break;
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default:
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NOTREACHED();
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break;
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}
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} else {
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switch (iHand) {
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case XFA_AttributeValue::Left:
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rect.Inflate(fHalfWidth, fHalfWidth);
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break;
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case XFA_AttributeValue::Right:
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rect.Deflate(fHalfWidth, fHalfWidth);
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break;
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case XFA_AttributeValue::Even:
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break;
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default:
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NOTREACHED();
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break;
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}
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}
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}
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void CXFA_FFLine::RenderWidget(CXFA_Graphics* pGS,
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const CFX_Matrix& matrix,
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HighlightOption highlight) {
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if (!HasVisibleStatus())
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return;
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CXFA_Value* value = m_pNode->GetFormValueIfExists();
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if (!value)
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return;
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FX_ARGB lineColor = 0xFF000000;
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float fLineWidth = 1.0f;
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XFA_AttributeValue iStrokeType = XFA_AttributeValue::Unknown;
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XFA_AttributeValue iCap = XFA_AttributeValue::Unknown;
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CXFA_Line* line = value->GetLineIfExists();
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if (line) {
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CXFA_Edge* edge = line->GetEdgeIfExists();
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if (edge && !edge->IsVisible())
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return;
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if (edge) {
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lineColor = edge->GetColor();
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iStrokeType = edge->GetStrokeType();
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fLineWidth = edge->GetThickness();
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iCap = edge->GetCapType();
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}
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}
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CFX_Matrix mtRotate = GetRotateMatrix();
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mtRotate.Concat(matrix);
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CFX_RectF rtLine = GetRectWithoutRotate();
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CXFA_Margin* margin = m_pNode->GetMarginIfExists();
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XFA_RectWithoutMargin(&rtLine, margin);
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GetRectFromHand(rtLine, line ? line->GetHand() : XFA_AttributeValue::Left,
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fLineWidth);
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CXFA_GEPath linePath;
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if (line && line->GetSlope() && rtLine.right() > 0.0f &&
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rtLine.bottom() > 0.0f) {
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linePath.AddLine(rtLine.TopRight(), rtLine.BottomLeft());
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} else {
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linePath.AddLine(rtLine.TopLeft(), rtLine.BottomRight());
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}
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pGS->SaveGraphState();
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pGS->SetLineWidth(fLineWidth);
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pGS->EnableActOnDash();
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XFA_StrokeTypeSetLineDash(pGS, iStrokeType, iCap);
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pGS->SetStrokeColor(CXFA_GEColor(lineColor));
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pGS->SetLineCap(LineCapToFXGE(iCap));
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pGS->StrokePath(&linePath, &mtRotate);
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pGS->RestoreGraphState();
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}
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