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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "baside2.hxx"
#include <vcl/event.hxx>
#include <vcl/textview.hxx>
#include <vcl/xtextedt.hxx>
#include <vcl/settings.hxx>
namespace basctl
{
LineNumberWindow::LineNumberWindow(vcl::Window* pParent, ModulWindow* pModulWindow)
: Window(pParent, WB_BORDER)
, m_pModulWindow(pModulWindow)
, m_nCurYOffset(0)
{
const Wallpaper aBackground(GetSettings().GetStyleSettings().GetWindowColor());
SetBackground(aBackground);
GetWindow(GetWindowType::Border)->SetBackground(aBackground);
m_FontColor = GetSettings().GetStyleSettings().GetWindowTextColor();
m_nBaseWidth = GetTextWidth("8");
m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
}
LineNumberWindow::~LineNumberWindow() { disposeOnce(); }
void LineNumberWindow::dispose()
{
m_pModulWindow.clear();
Window::dispose();
}
void LineNumberWindow::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle&)
{
if (SyncYOffset())
return;
ExtTextEngine* txtEngine = m_pModulWindow->GetEditEngine();
if (!txtEngine)
return;
TextView* txtView = m_pModulWindow->GetEditView();
if (!txtView)
return;
int windowHeight = rRenderContext.GetOutputSize().Height();
int nLineHeight = rRenderContext.GetTextHeight();
if (!nLineHeight)
{
return;
}
int startY = txtView->GetStartDocPos().Y();
const sal_uInt32 nStartLine = startY / nLineHeight + 1;
sal_uInt32 nEndLine = (startY + windowHeight) / nLineHeight + 1;
if (txtEngine->GetParagraphCount() + 1 < nEndLine)
nEndLine = txtEngine->GetParagraphCount() + 1;
// FIXME: it would be best if we could get notified of a font change
// rather than doing that re-calculation at each Paint event
m_nBaseWidth = GetTextWidth("8");
// reserve enough for 3 digit minimum, with a bit to spare for comfort
m_nWidth = m_nBaseWidth * 3 + m_nBaseWidth / 2;
auto nMaxLineNumber = std::max(nEndLine, txtEngine->GetParagraphCount() + 1);
sal_uInt32 i = (nMaxLineNumber + 1) / 1000;
while (i)
{
i /= 10;
m_nWidth += m_nBaseWidth;
}
sal_Int64 y = (nStartLine - 1) * static_cast<sal_Int64>(nLineHeight);
rRenderContext.SetTextColor(m_FontColor);
for (sal_uInt32 n = nStartLine; n <= nEndLine; ++n, y += nLineHeight)
{
const OUString aLineNumber = OUString::number(n);
// tdf#153798 - align line numbers to the right
rRenderContext.DrawText(
Point(m_nWidth - GetTextWidth(aLineNumber) - m_nBaseWidth / 2, y - m_nCurYOffset),
aLineNumber);
}
// Resize the parent after calculating the new width and height values
GetParent()->Resize();
}
void LineNumberWindow::DataChanged(DataChangedEvent const& rDCEvt)
{
Window::DataChanged(rDCEvt);
if (rDCEvt.GetType() == DataChangedEventType::SETTINGS
&& (rDCEvt.GetFlags() & AllSettingsFlags::STYLE))
{
Color aColor(GetSettings().GetStyleSettings().GetFieldColor());
const AllSettings* pOldSettings = rDCEvt.GetOldSettings();
if (!pOldSettings || aColor != pOldSettings->GetStyleSettings().GetFieldColor())
{
SetBackground(Wallpaper(aColor));
Invalidate();
}
}
}
void LineNumberWindow::DoScroll(tools::Long nVertScroll)
{
m_nCurYOffset -= nVertScroll;
Window::Scroll(0, nVertScroll);
}
bool LineNumberWindow::SyncYOffset()
{
TextView* pView = m_pModulWindow->GetEditView();
if (!pView)
return false;
tools::Long nViewYOffset = pView->GetStartDocPos().Y();
if (m_nCurYOffset == nViewYOffset)
return false;
m_nCurYOffset = nViewYOffset;
Invalidate();
return true;
}
} // namespace basctl
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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