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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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <tbzoomsliderctrl.hxx>
#include <i18nutil/unicode.hxx>
#include <vcl/svapp.hxx>
#include <comphelper/propertyvalue.hxx>
#include <utility>
#include <vcl/InterimItemWindow.hxx>
#include <vcl/event.hxx>
#include <vcl/image.hxx>
#include <vcl/toolbox.hxx>
#include <vcl/virdev.hxx>
#include <svx/zoomslideritem.hxx>
#include <iterator>
#include <set>
#include <bitmaps.hlst>
#include <com/sun/star/frame/XFrame.hpp>
#include <com/sun/star/frame/XDispatchProvider.hpp>
// class ScZoomSliderControl ---------------------------------------
SFX_IMPL_TOOLBOX_CONTROL( ScZoomSliderControl, SvxZoomSliderItem );
ScZoomSliderControl::ScZoomSliderControl(
sal_uInt16 nSlotId,
ToolBoxItemId nId,
ToolBox& rTbx )
:SfxToolBoxControl( nSlotId, nId, rTbx )
{
rTbx.Invalidate();
}
ScZoomSliderControl::~ScZoomSliderControl()
{
}
void ScZoomSliderControl::StateChangedAtToolBoxControl( sal_uInt16 /*nSID*/, SfxItemState eState,
const SfxPoolItem* pState )
{
ToolBoxItemId nId = GetId();
ToolBox& rTbx = GetToolBox();
ScZoomSliderWnd* pBox = static_cast<ScZoomSliderWnd*>(rTbx.GetItemWindow( nId ));
OSL_ENSURE( pBox ,"Control not found!" );
if (SfxItemState::DEFAULT != eState || SfxItemState::DISABLED == eState)
{
SvxZoomSliderItem aZoomSliderItem( 100 );
pBox->Disable();
pBox->UpdateFromItem( &aZoomSliderItem );
}
else
{
pBox->Enable();
OSL_ENSURE( dynamic_cast<const SvxZoomSliderItem*>( pState) != nullptr, "invalid item type" );
const SvxZoomSliderItem* pZoomSliderItem = dynamic_cast< const SvxZoomSliderItem* >( pState );
OSL_ENSURE( pZoomSliderItem, "Sc::ScZoomSliderControl::StateChanged(), wrong item type!" );
if( pZoomSliderItem )
pBox->UpdateFromItem( pZoomSliderItem );
}
}
VclPtr<InterimItemWindow> ScZoomSliderControl::CreateItemWindow( vcl::Window *pParent )
{
// #i98000# Don't try to get a value via SfxViewFrame::Current here.
// The view's value is always notified via StateChanged later.
VclPtrInstance<ScZoomSliderWnd> xSlider( pParent,
css::uno::Reference< css::frame::XDispatchProvider >( m_xFrame->getController(),
css::uno::UNO_QUERY ), 100 );
return xSlider;
}
constexpr sal_uInt16 gnSliderCenter(100);
const tools::Long nButtonWidth = 10;
const tools::Long nButtonHeight = 10;
const tools::Long nIncDecWidth = 11;
const tools::Long nIncDecHeight = 11;
const tools::Long nSliderHeight = 2;
const tools::Long nSliderWidth = 4;
const tools::Long nSnappingHeight = 4;
const tools::Long nSliderXOffset = 20;
const tools::Long nSnappingEpsilon = 5; // snapping epsilon in pixels
const tools::Long nSnappingPointsMinDist = nSnappingEpsilon; // minimum distance of two adjacent snapping points
sal_uInt16 ScZoomSlider::Offset2Zoom( tools::Long nOffset ) const
{
const tools::Long nControlWidth = GetSliderLength();
sal_uInt16 nRet = 0;
if( nOffset < nSliderXOffset )
return mnMinZoom;
if( nOffset > nControlWidth - nSliderXOffset )
return mnMaxZoom;
// check for snapping points:
auto aSnappingPointIter = std::find_if(maSnappingPointOffsets.begin(), maSnappingPointOffsets.end(),
[nOffset](const tools::Long nCurrent) { return std::abs(nCurrent - nOffset) < nSnappingEpsilon; });
if (aSnappingPointIter != maSnappingPointOffsets.end())
{
nOffset = *aSnappingPointIter;
auto nCount = static_cast<sal_uInt16>(std::distance(maSnappingPointOffsets.begin(), aSnappingPointIter));
nRet = maSnappingPointZooms[ nCount ];
}
if( 0 == nRet )
{
if( nOffset < nControlWidth / 2 )
{
// first half of slider
const tools::Long nFirstHalfRange = gnSliderCenter - mnMinZoom;
const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
const tools::Long nZoomPerSliderPixel = (1000 * nFirstHalfRange) / nHalfSliderWidth;
const tools::Long nOffsetToSliderLeft = nOffset - nSliderXOffset;
nRet = mnMinZoom + sal_uInt16( nOffsetToSliderLeft * nZoomPerSliderPixel / 1000 );
}
else
{
// second half of slider
const tools::Long nSecondHalfRange = mnMaxZoom - gnSliderCenter;
const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
const tools::Long nZoomPerSliderPixel = 1000 * nSecondHalfRange / nHalfSliderWidth;
const tools::Long nOffsetToSliderCenter = nOffset - nControlWidth/2;
nRet = gnSliderCenter + sal_uInt16( nOffsetToSliderCenter * nZoomPerSliderPixel / 1000 );
}
}
if( nRet < mnMinZoom )
return mnMinZoom;
else if( nRet > mnMaxZoom )
return mnMaxZoom;
return nRet;
}
tools::Long ScZoomSlider::Zoom2Offset( sal_uInt16 nCurrentZoom ) const
{
const tools::Long nControlWidth = GetSliderLength();
tools::Long nRect = nSliderXOffset;
const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
if( nCurrentZoom <= gnSliderCenter )
{
nCurrentZoom = nCurrentZoom - mnMinZoom;
const tools::Long nFirstHalfRange = gnSliderCenter - mnMinZoom;
const tools::Long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth / nFirstHalfRange;
const tools::Long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
nRect += nOffset;
}
else
{
nCurrentZoom = nCurrentZoom - gnSliderCenter;
const tools::Long nSecondHalfRange = mnMaxZoom - gnSliderCenter;
const tools::Long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth / nSecondHalfRange;
const tools::Long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
nRect += nHalfSliderWidth + nOffset;
}
return nRect;
}
ScZoomSliderWnd::ScZoomSliderWnd( vcl::Window* pParent,
const css::uno::Reference< css::frame::XDispatchProvider >& rDispatchProvider,
sal_uInt16 nCurrentZoom ):
InterimItemWindow(pParent, "modules/scalc/ui/zoombox.ui", "ZoomBox"),
mxWidget(new ScZoomSlider(rDispatchProvider, nCurrentZoom)),
mxPercentage(m_xBuilder->weld_label("current_zoom")),
mxLabel(m_xBuilder->weld_label("zoom_label")),
mxWeld(new weld::CustomWeld(*m_xBuilder, "zoom", *mxWidget))
{
Size aLogicalSize( 115, 40 );
Size aSliderSize = LogicToPixel(aLogicalSize, MapMode(MapUnit::Map10thMM));
Size aPreferredSize(aSliderSize.Width() * nSliderWidth-1, aSliderSize.Height() + nSliderHeight);
mxWidget->GetDrawingArea()->set_size_request(aPreferredSize.Width(), aPreferredSize.Height());
mxWidget->SetOutputSizePixel(aPreferredSize);
mxWidget->SetSliderLength(aPreferredSize.Width() + nIncDecWidth);
aPreferredSize.setWidth(aPreferredSize.Width() + mxLabel->get_pixel_size(mxLabel->get_label()).Width()
+ mxPercentage->get_pixel_size(mxPercentage->get_label()).Width());
SetSizePixel(aPreferredSize);
OUString sCurrentZoom(unicode::formatPercent(nCurrentZoom, Application::GetSettings().GetUILanguageTag()));
mxPercentage->set_label(sCurrentZoom);
}
ScZoomSliderWnd::~ScZoomSliderWnd()
{
disposeOnce();
}
void ScZoomSliderWnd::dispose()
{
mxWeld.reset();
mxWidget.reset();
InterimItemWindow::dispose();
}
ScZoomSlider::ScZoomSlider(css::uno::Reference< css::frame::XDispatchProvider> xDispatchProvider,
sal_uInt16 nCurrentZoom)
: mnSliderLength(0)
, mnCurrentZoom(nCurrentZoom)
, mnMinZoom(10)
, mnMaxZoom(400)
, mbOmitPaint(false)
, m_xDispatchProvider(std::move(xDispatchProvider))
{
maSliderButton = Image(StockImage::Yes, RID_SVXBMP_SLIDERBUTTON);
maIncreaseButton = Image(StockImage::Yes, RID_SVXBMP_SLIDERINCREASE);
maDecreaseButton = Image(StockImage::Yes, RID_SVXBMP_SLIDERDECREASE);
}
bool ScZoomSlider::MouseButtonDown( const MouseEvent& rMEvt )
{
Size aSliderWindowSize = GetOutputSizePixel();
const Point aPoint = rMEvt.GetPosPixel();
const tools::Long nButtonLeftOffset = ( nSliderXOffset - nIncDecWidth )/2;
const tools::Long nButtonRightOffset = ( nSliderXOffset + nIncDecWidth )/2;
const tools::Long nOldZoom = mnCurrentZoom;
// click to - button
if ( aPoint.X() >= nButtonLeftOffset && aPoint.X() <= nButtonRightOffset )
{
mnCurrentZoom = mnCurrentZoom - 5;
}
// click to + button
else if ( aPoint.X() >= GetSliderLength() - nSliderXOffset + nButtonLeftOffset &&
aPoint.X() <= GetSliderLength() - nSliderXOffset + nButtonRightOffset )
{
mnCurrentZoom = mnCurrentZoom + 5;
}
else if( aPoint.X() >= nSliderXOffset && aPoint.X() <= GetSliderLength() - nSliderXOffset )
{
mnCurrentZoom = Offset2Zoom( aPoint.X() );
}
if( mnCurrentZoom < mnMinZoom )
mnCurrentZoom = mnMinZoom;
else if( mnCurrentZoom > mnMaxZoom )
mnCurrentZoom = mnMaxZoom;
if( nOldZoom == mnCurrentZoom )
return true;
tools::Rectangle aRect( Point( 0, 0 ), aSliderWindowSize );
Invalidate(aRect);
mbOmitPaint = true;
SvxZoomSliderItem aZoomSliderItem( mnCurrentZoom );
css::uno::Any a;
aZoomSliderItem.QueryValue( a );
css::uno::Sequence aArgs{ comphelper::makePropertyValue("ScalingFactor", a) };
SfxToolBoxControl::Dispatch( m_xDispatchProvider, ".uno:ScalingFactor", aArgs );
mbOmitPaint = false;
return true;
}
bool ScZoomSlider::MouseMove( const MouseEvent& rMEvt )
{
Size aSliderWindowSize = GetOutputSizePixel();
const tools::Long nControlWidth = GetSliderLength();
const short nButtons = rMEvt.GetButtons();
// check mouse move with button pressed
if ( 1 == nButtons )
{
const Point aPoint = rMEvt.GetPosPixel();
if ( aPoint.X() >= nSliderXOffset && aPoint.X() <= nControlWidth - nSliderXOffset )
{
mnCurrentZoom = Offset2Zoom( aPoint.X() );
tools::Rectangle aRect(Point(0, 0), aSliderWindowSize);
Invalidate(aRect);
mbOmitPaint = true; // optimization: paint before executing command,
// commit state change
SvxZoomSliderItem aZoomSliderItem( mnCurrentZoom );
css::uno::Any a;
aZoomSliderItem.QueryValue( a );
css::uno::Sequence aArgs{ comphelper::makePropertyValue("ScalingFactor", a) };
SfxToolBoxControl::Dispatch( m_xDispatchProvider, ".uno:ScalingFactor", aArgs );
mbOmitPaint = false;
}
}
return false;
}
void ScZoomSliderWnd::UpdateFromItem( const SvxZoomSliderItem* pZoomSliderItem )
{
OUString sCurrentZoom(unicode::formatPercent(pZoomSliderItem->GetValue(), Application::GetSettings().GetUILanguageTag()));
mxPercentage->set_label(sCurrentZoom);
mxWidget->UpdateFromItem(pZoomSliderItem);
}
void ScZoomSlider::UpdateFromItem(const SvxZoomSliderItem* pZoomSliderItem)
{
if( pZoomSliderItem )
{
mnCurrentZoom = pZoomSliderItem->GetValue();
mnMinZoom = pZoomSliderItem->GetMinZoom();
mnMaxZoom = pZoomSliderItem->GetMaxZoom();
OSL_ENSURE( mnMinZoom <= mnCurrentZoom &&
mnMinZoom < gnSliderCenter &&
mnMaxZoom >= mnCurrentZoom &&
mnMaxZoom > gnSliderCenter,
"Looks like the zoom slider item is corrupted" );
const css::uno::Sequence < sal_Int32 >& rSnappingPoints = pZoomSliderItem->GetSnappingPoints();
maSnappingPointOffsets.clear();
maSnappingPointZooms.clear();
// get all snapping points:
std::set< sal_uInt16 > aTmpSnappingPoints;
std::transform(rSnappingPoints.begin(), rSnappingPoints.end(), std::inserter(aTmpSnappingPoints, aTmpSnappingPoints.end()),
[](const sal_Int32 nSnappingPoint) -> sal_uInt16 { return static_cast<sal_uInt16>(nSnappingPoint); });
// remove snapping points that are too close to each other:
tools::Long nLastOffset = 0;
for ( const sal_uInt16 nCurrent : aTmpSnappingPoints )
{
const tools::Long nCurrentOffset = Zoom2Offset( nCurrent );
if ( nCurrentOffset - nLastOffset >= nSnappingPointsMinDist )
{
maSnappingPointOffsets.push_back( nCurrentOffset );
maSnappingPointZooms.push_back( nCurrent );
nLastOffset = nCurrentOffset;
}
}
}
Size aSliderWindowSize = GetOutputSizePixel();
tools::Rectangle aRect(Point(0, 0), aSliderWindowSize);
if ( !mbOmitPaint )
Invalidate(aRect);
}
void ScZoomSlider::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& /*rRect*/)
{
DoPaint(rRenderContext);
}
void ScZoomSlider::DoPaint(vcl::RenderContext& rRenderContext)
{
if (mbOmitPaint)
return;
Size aSliderWindowSize(GetOutputSizePixel());
tools::Rectangle aRect(Point(0, 0), aSliderWindowSize);
ScopedVclPtrInstance< VirtualDevice > pVDev(rRenderContext);
pVDev->SetOutputSizePixel(aSliderWindowSize);
tools::Rectangle aSlider = aRect;
aSlider.setWidth(GetSliderLength());
aSlider.AdjustTop((aSliderWindowSize.Height() - nSliderHeight) / 2 - 1 );
aSlider.SetBottom( aSlider.Top() + nSliderHeight );
aSlider.AdjustLeft(nSliderXOffset );
aSlider.AdjustRight( -nSliderXOffset );
tools::Rectangle aFirstLine(aSlider);
aFirstLine.SetBottom( aFirstLine.Top() );
tools::Rectangle aSecondLine(aSlider);
aSecondLine.SetTop( aSecondLine.Bottom() );
tools::Rectangle aLeft(aSlider);
aLeft.SetRight( aLeft.Left() );
tools::Rectangle aRight(aSlider);
aRight.SetLeft( aRight.Right() );
// draw VirtualDevice's background color
Color aStartColor = rRenderContext.GetSettings().GetStyleSettings().GetFaceColor();
Color aEndColor = rRenderContext.GetSettings().GetStyleSettings().GetFaceColor();
if (aEndColor.IsDark())
aStartColor = aEndColor;
Gradient aGradient;
aGradient.SetAngle(0_deg10);
aGradient.SetStyle(css::awt::GradientStyle_LINEAR);
aGradient.SetStartColor(aStartColor);
aGradient.SetEndColor(aEndColor);
pVDev->DrawGradient(aRect, aGradient);
// draw slider
pVDev->SetLineColor(COL_WHITE);
pVDev->DrawRect(aSecondLine);
pVDev->DrawRect(aRight);
pVDev->SetLineColor(COL_GRAY);
pVDev->DrawRect(aFirstLine);
pVDev->DrawRect(aLeft);
// draw snapping points:
for (const auto& rSnappingPointOffset : maSnappingPointOffsets)
{
pVDev->SetLineColor(COL_GRAY);
tools::Rectangle aSnapping(aRect);
aSnapping.SetBottom( aSlider.Top() );
aSnapping.SetTop( aSnapping.Bottom() - nSnappingHeight );
aSnapping.AdjustLeft(rSnappingPointOffset );
aSnapping.SetRight( aSnapping.Left() );
pVDev->DrawRect(aSnapping);
aSnapping.AdjustTop(nSnappingHeight + nSliderHeight );
aSnapping.AdjustBottom(nSnappingHeight + nSliderHeight );
pVDev->DrawRect(aSnapping);
}
// draw slider button
Point aImagePoint = aRect.TopLeft();
aImagePoint.AdjustX(Zoom2Offset(mnCurrentZoom) );
aImagePoint.AdjustX( -(nButtonWidth / 2) );
aImagePoint.AdjustY( (aSliderWindowSize.Height() - nButtonHeight) / 2 );
pVDev->DrawImage(aImagePoint, maSliderButton);
// draw decrease button
aImagePoint = aRect.TopLeft();
aImagePoint.AdjustX((nSliderXOffset - nIncDecWidth) / 2 );
aImagePoint.AdjustY((aSliderWindowSize.Height() - nIncDecHeight) / 2 );
pVDev->DrawImage(aImagePoint, maDecreaseButton);
// draw increase button
aImagePoint.setX( aRect.Left() + GetSliderLength() - nIncDecWidth - (nSliderXOffset - nIncDecWidth) / 2 );
pVDev->DrawImage(aImagePoint, maIncreaseButton);
rRenderContext.DrawOutDev(Point(0, 0), aSliderWindowSize, Point(0, 0), aSliderWindowSize, *pVDev);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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