diff options
Diffstat (limited to 'fpdfsdk/src/pdfwindow/PWL_Caret.cpp')
| -rw-r--r-- | fpdfsdk/src/pdfwindow/PWL_Caret.cpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/fpdfsdk/src/pdfwindow/PWL_Caret.cpp b/fpdfsdk/src/pdfwindow/PWL_Caret.cpp new file mode 100644 index 0000000000..e54538ea73 --- /dev/null +++ b/fpdfsdk/src/pdfwindow/PWL_Caret.cpp @@ -0,0 +1,197 @@ +// 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 "../../include/pdfwindow/PDFWindow.h"
+#include "../../include/pdfwindow/PWL_Wnd.h"
+#include "../../include/pdfwindow/PWL_Caret.h"
+#include "../../include/pdfwindow/PWL_Utils.h"
+
+#define PWL_CARET_FLASHINTERVAL 500
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+
+CPWL_Caret::CPWL_Caret() :
+ m_bFlash(FALSE),
+ m_ptHead(0,0),
+ m_ptFoot(0,0),
+ 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,CPDF_Point(0.0f,0.0f));
+}
+
+void CPWL_Caret::DrawThisAppearance(CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device)
+{
+ if (IsVisible() && m_bFlash)
+ {
+ CPDF_Rect rcRect = GetCaretRect();
+ CPDF_Rect rcClip = GetClipRect();
+
+ CFX_PathData path;
+
+ path.SetPointCount(2);
+
+ FX_FLOAT fCaretX = rcRect.left + m_fWidth * 0.5f;
+ FX_FLOAT fCaretTop = rcRect.top;
+ FX_FLOAT fCaretBottom = rcRect.bottom;
+
+ if (!rcClip.IsEmpty())
+ {
+ rcRect.Intersect(rcClip);
+ if (!rcRect.IsEmpty())
+ {
+ fCaretTop = rcRect.top;
+ fCaretBottom = rcRect.bottom;
+ path.SetPoint(0, fCaretX, fCaretBottom, FXPT_MOVETO);
+ path.SetPoint(1, fCaretX, fCaretTop, FXPT_LINETO);
+ }
+ else
+ {
+ return;
+ }
+ }
+ else
+ {
+ path.SetPoint(0, fCaretX, fCaretBottom, FXPT_MOVETO);
+ path.SetPoint(1, fCaretX, fCaretTop, FXPT_LINETO);
+ }
+
+ 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 CPDF_Point & ptOffset)
+{
+ if (IsVisible() && m_bFlash)
+ {
+ CFX_ByteTextBuf sCaret;
+
+ CPDF_Rect rcRect = GetCaretRect();
+ CPDF_Rect 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 CPDF_Point & ptOffset)
+{
+ CFX_ByteTextBuf sCaret;
+ GetCaretApp(sCaret,ptOffset);
+ return sCaret.GetByteString();
+}
+
+void CPWL_Caret::TimerProc()
+{
+ if (m_nDelay > 0)
+ {
+ m_nDelay--;
+ }
+ else
+ {
+ m_bFlash = !m_bFlash;
+ InvalidateRect();
+ }
+}
+
+CPDF_Rect CPWL_Caret::GetCaretRect() const
+{
+ return CPDF_Rect(m_ptFoot.x,
+ m_ptFoot.y,
+ m_ptHead.x + this->m_fWidth,
+ m_ptHead.y);
+}
+
+void CPWL_Caret::SetCaret(FX_BOOL bVisible, const CPDF_Point & ptHead, const CPDF_Point & ptFoot)
+{
+ if (bVisible)
+ {
+ if (IsVisible())
+ {
+ if (m_ptHead.x != ptHead.x || m_ptHead.y != ptHead.y ||
+ m_ptFoot.x != ptFoot.x || m_ptFoot.y != ptFoot.y)
+ {
+ this->m_ptHead = ptHead;
+ this->m_ptFoot = ptFoot;
+
+ m_bFlash = TRUE;
+ //Move(GetCaretRect(),FALSE,TRUE);
+ Move(m_rcInvalid, FALSE, TRUE);
+ }
+ }
+ else
+ {
+ this->m_ptHead = ptHead;
+ this->m_ptFoot = ptFoot;
+
+ EndTimer();
+ BeginTimer(PWL_CARET_FLASHINTERVAL);
+
+ CPWL_Wnd::SetVisible(TRUE);
+ m_bFlash = TRUE;
+
+ //Move(GetCaretRect(),FALSE,TRUE);
+ Move(m_rcInvalid, FALSE, TRUE);
+ }
+ }
+ else
+ {
+ this->m_ptHead = CPDF_Point(0,0);
+ this->m_ptFoot = CPDF_Point(0,0);
+
+ m_bFlash = FALSE;
+ if (IsVisible())
+ {
+ EndTimer();
+ CPWL_Wnd::SetVisible(FALSE);
+ }
+ }
+}
+
+void CPWL_Caret::InvalidateRect(CPDF_Rect * pRect)
+{
+ if (pRect)
+ {
+ CPDF_Rect rcRefresh = CPWL_Utils::InflateRect(*pRect,0.5f);
+ rcRefresh.top += 1;
+ rcRefresh.bottom -= 1;
+
+ CPWL_Wnd::InvalidateRect(&rcRefresh);
+ }
+ else
+ CPWL_Wnd::InvalidateRect(pRect);
+}
+
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