blob: 320b2bf62f9462dfba7861c1a876cf32f4eb8f64 [file] [log] [blame]
// 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/include/pdfwindow/PWL_Caret.h"
#include "fpdfsdk/include/pdfwindow/PWL_Utils.h"
#include "fpdfsdk/include/pdfwindow/PWL_Wnd.h"
#define PWL_CARET_FLASHINTERVAL 500
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, CFX_FloatPoint(0.0f, 0.0f));
}
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;
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 CFX_FloatPoint& 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_FloatPoint& 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();
}
}
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(FX_BOOL bVisible,
const CFX_FloatPoint& ptHead,
const CFX_FloatPoint& 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) {
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_FloatPoint(0, 0);
m_ptFoot = CFX_FloatPoint(0, 0);
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);
}
}