| // 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 "fpdfsdk/pdfwindow/cpwl_caret.h" |
| |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "fpdfsdk/pdfwindow/cpwl_utils.h" |
| #include "fpdfsdk/pdfwindow/cpwl_wnd.h" |
| |
| #define PWL_CARET_FLASHINTERVAL 500 |
| |
| PWL_CARET_INFO::PWL_CARET_INFO() : bVisible(false) {} |
| |
| CPWL_Caret::CPWL_Caret() : m_bFlash(false), m_fWidth(0.4f), m_nDelay(0) {} |
| |
| CPWL_Caret::~CPWL_Caret() {} |
| |
| CFX_ByteString CPWL_Caret::GetClassName() const { |
| return "CPWL_Caret"; |
| } |
| |
| void CPWL_Caret::GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) { |
| GetCaretApp(sAppStream, CFX_PointF()); |
| } |
| |
| void CPWL_Caret::DrawThisAppearance(CFX_RenderDevice* pDevice, |
| CFX_Matrix* pUser2Device) { |
| if (IsVisible() && m_bFlash) { |
| CFX_FloatRect rcRect = GetCaretRect(); |
| CFX_FloatRect rcClip = GetClipRect(); |
| CFX_PathData path; |
| |
| float fCaretX = rcRect.left + m_fWidth * 0.5f; |
| float fCaretTop = rcRect.top; |
| float fCaretBottom = rcRect.bottom; |
| if (!rcClip.IsEmpty()) { |
| rcRect.Intersect(rcClip); |
| if (rcRect.IsEmpty()) |
| return; |
| |
| fCaretTop = rcRect.top; |
| fCaretBottom = rcRect.bottom; |
| } |
| |
| path.AppendPoint(CFX_PointF(fCaretX, fCaretBottom), FXPT_TYPE::MoveTo, |
| false); |
| path.AppendPoint(CFX_PointF(fCaretX, fCaretTop), FXPT_TYPE::LineTo, false); |
| |
| CFX_GraphStateData gsd; |
| gsd.m_LineWidth = m_fWidth; |
| pDevice->DrawPath(&path, pUser2Device, &gsd, 0, ArgbEncode(255, 0, 0, 0), |
| FXFILL_ALTERNATE); |
| } |
| } |
| |
| void CPWL_Caret::GetCaretApp(CFX_ByteTextBuf& sAppStream, |
| const CFX_PointF& ptOffset) { |
| if (IsVisible() && m_bFlash) { |
| CFX_ByteTextBuf sCaret; |
| |
| CFX_FloatRect rcRect = GetCaretRect(); |
| CFX_FloatRect rcClip = GetClipRect(); |
| |
| rcRect = CPWL_Utils::OffsetRect(rcRect, ptOffset.x, ptOffset.y); |
| rcClip = CPWL_Utils::OffsetRect(rcClip, ptOffset.x, ptOffset.y); |
| |
| sCaret << "q\n"; |
| if (!rcClip.IsEmpty()) { |
| sCaret << rcClip.left << " " << rcClip.bottom + 2.5f << " " |
| << rcClip.right - rcClip.left << " " |
| << rcClip.top - rcClip.bottom - 4.5f << " re W n\n"; |
| } |
| sCaret << m_fWidth << " w\n0 G\n"; |
| sCaret << rcRect.left + m_fWidth / 2 << " " << rcRect.bottom << " m\n"; |
| sCaret << rcRect.left + m_fWidth / 2 << " " << rcRect.top << " l S\nQ\n"; |
| |
| sAppStream << sCaret; |
| } |
| } |
| |
| CFX_ByteString CPWL_Caret::GetCaretAppearanceStream( |
| const CFX_PointF& ptOffset) { |
| CFX_ByteTextBuf sCaret; |
| GetCaretApp(sCaret, ptOffset); |
| return sCaret.MakeString(); |
| } |
| |
| void CPWL_Caret::TimerProc() { |
| if (m_nDelay > 0) { |
| m_nDelay--; |
| } else { |
| m_bFlash = !m_bFlash; |
| InvalidateRect(); |
| } |
| } |
| |
| CFX_FloatRect CPWL_Caret::GetCaretRect() const { |
| return CFX_FloatRect(m_ptFoot.x, m_ptFoot.y, m_ptHead.x + m_fWidth, |
| m_ptHead.y); |
| } |
| |
| void CPWL_Caret::SetCaret(bool bVisible, |
| const CFX_PointF& ptHead, |
| const CFX_PointF& ptFoot) { |
| if (bVisible) { |
| if (IsVisible()) { |
| if (m_ptHead != ptHead || m_ptFoot != ptFoot) { |
| m_ptHead = ptHead; |
| m_ptFoot = ptFoot; |
| m_bFlash = true; |
| Move(m_rcInvalid, false, true); |
| } |
| } else { |
| m_ptHead = ptHead; |
| m_ptFoot = ptFoot; |
| EndTimer(); |
| BeginTimer(PWL_CARET_FLASHINTERVAL); |
| CPWL_Wnd::SetVisible(true); |
| m_bFlash = true; |
| Move(m_rcInvalid, false, true); |
| } |
| } else { |
| m_ptHead = CFX_PointF(); |
| m_ptFoot = CFX_PointF(); |
| m_bFlash = false; |
| if (IsVisible()) { |
| EndTimer(); |
| CPWL_Wnd::SetVisible(false); |
| } |
| } |
| } |
| |
| void CPWL_Caret::InvalidateRect(CFX_FloatRect* pRect) { |
| if (pRect) { |
| CFX_FloatRect rcRefresh = CPWL_Utils::InflateRect(*pRect, 0.5f); |
| rcRefresh.top += 1; |
| rcRefresh.bottom -= 1; |
| CPWL_Wnd::InvalidateRect(&rcRefresh); |
| } else { |
| CPWL_Wnd::InvalidateRect(pRect); |
| } |
| } |