130 lines
3.6 KiB
C++
130 lines
3.6 KiB
C++
// Copyright 2014 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 "fpdfsdk/pwl/cpwl_caret.h"
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#include <sstream>
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#include <utility>
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#include "core/fxge/cfx_graphstatedata.h"
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#include "core/fxge/cfx_pathdata.h"
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#include "core/fxge/cfx_renderdevice.h"
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#include "third_party/base/ptr_util.h"
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CPWL_Caret::CPWL_Caret(
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const CreateParams& cp,
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std::unique_ptr<IPWL_SystemHandler::PerWindowData> pAttachedData)
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: CPWL_Wnd(cp, std::move(pAttachedData)) {}
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CPWL_Caret::~CPWL_Caret() = default;
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void CPWL_Caret::DrawThisAppearance(CFX_RenderDevice* pDevice,
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const CFX_Matrix& mtUser2Device) {
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if (!IsVisible() || !m_bFlash)
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return;
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CFX_FloatRect rcRect = GetCaretRect();
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CFX_FloatRect rcClip = GetClipRect();
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CFX_PathData path;
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float fCaretX = rcRect.left + m_fWidth * 0.5f;
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float fCaretTop = rcRect.top;
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float fCaretBottom = rcRect.bottom;
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if (!rcClip.IsEmpty()) {
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rcRect.Intersect(rcClip);
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if (rcRect.IsEmpty())
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return;
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fCaretTop = rcRect.top;
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fCaretBottom = rcRect.bottom;
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}
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path.AppendPoint(CFX_PointF(fCaretX, fCaretBottom), FXPT_TYPE::MoveTo, false);
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path.AppendPoint(CFX_PointF(fCaretX, fCaretTop), FXPT_TYPE::LineTo, false);
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CFX_GraphStateData gsd;
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gsd.m_LineWidth = m_fWidth;
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pDevice->DrawPath(&path, &mtUser2Device, &gsd, 0, ArgbEncode(255, 0, 0, 0),
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FXFILL_ALTERNATE);
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}
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void CPWL_Caret::OnTimerFired() {
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m_bFlash = !m_bFlash;
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InvalidateRect(nullptr);
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// Note, |this| may no longer be viable at this point. If more work needs
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// to be done, add an observer.
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}
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CFX_FloatRect CPWL_Caret::GetCaretRect() const {
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return CFX_FloatRect(m_ptFoot.x, m_ptFoot.y, m_ptHead.x + m_fWidth,
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m_ptHead.y);
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}
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void CPWL_Caret::SetCaret(bool bVisible,
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const CFX_PointF& ptHead,
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const CFX_PointF& ptFoot) {
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if (!bVisible) {
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m_ptHead = CFX_PointF();
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m_ptFoot = CFX_PointF();
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m_bFlash = false;
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if (!IsVisible())
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return;
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m_pTimer.reset();
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CPWL_Wnd::SetVisible(false);
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// Note, |this| may no longer be viable at this point. If more work needs
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// to be done, check the return value of SetVisible().
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return;
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}
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if (!IsVisible()) {
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static constexpr int32_t kCaretFlashIntervalMs = 500;
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m_ptHead = ptHead;
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m_ptFoot = ptFoot;
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m_pTimer = pdfium::MakeUnique<CFX_Timer>(GetTimerHandler(), this,
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kCaretFlashIntervalMs);
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if (!CPWL_Wnd::SetVisible(true))
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return;
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m_bFlash = true;
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Move(m_rcInvalid, false, true);
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// Note, |this| may no longer be viable at this point. If more work needs
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// to be done, check the return value of Move().
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return;
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}
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if (m_ptHead == ptHead && m_ptFoot == ptFoot)
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return;
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m_ptHead = ptHead;
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m_ptFoot = ptFoot;
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m_bFlash = true;
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Move(m_rcInvalid, false, true);
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// Note, |this| may no longer be viable at this point. If more work
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// needs to be done, check the return value of Move().
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}
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bool CPWL_Caret::InvalidateRect(CFX_FloatRect* pRect) {
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if (!pRect) {
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return CPWL_Wnd::InvalidateRect(nullptr);
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}
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CFX_FloatRect rcRefresh = *pRect;
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if (!rcRefresh.IsEmpty()) {
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rcRefresh.Inflate(0.5f, 0.5f);
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rcRefresh.Normalize();
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}
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rcRefresh.top += 1;
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rcRefresh.bottom -= 1;
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return CPWL_Wnd::InvalidateRect(&rcRefresh);
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}
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bool CPWL_Caret::SetVisible(bool bVisible) {
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return true;
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}
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