Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 392 insertions, 0 deletions

diff --git a/svx/source/stbctrls/zoomsliderctrl.cxx b/svx/source/stbctrls/zoomsliderctrl.cxx
new file mode 100644
index 000000000..c0790b074
--- /dev/null
+++ b/svx/source/stbctrls/zoomsliderctrl.cxx
@@ -0,0 +1,392 @@
+/* -*- 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 <svx/zoomsliderctrl.hxx>
+
+#include <comphelper/propertyvalue.hxx>
+#include <vcl/status.hxx>
+#include <vcl/image.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/event.hxx>
+#include <svx/zoomslideritem.hxx>
+#include <svx/dialmgr.hxx>
+#include <svx/strings.hrc>
+#include <basegfx/utils/zoomtools.hxx>
+#include <bitmaps.hlst>
+#include <com/sun/star/beans/PropertyValue.hpp>
+
+#include <set>
+
+SFX_IMPL_STATUSBAR_CONTROL( SvxZoomSliderControl, SvxZoomSliderItem );
+
+struct SvxZoomSliderControl::SvxZoomSliderControl_Impl
+{
+    sal_uInt16                   mnCurrentZoom;
+    sal_uInt16                   mnMinZoom;
+    sal_uInt16                   mnMaxZoom;
+    sal_uInt16                   mnSliderCenter;
+    std::vector< tools::Long >      maSnappingPointOffsets;
+    std::vector< sal_uInt16 >    maSnappingPointZooms;
+    Image                    maSliderButton;
+    Image                    maIncreaseButton;
+    Image                    maDecreaseButton;
+    bool                     mbValuesSet;
+    bool                     mbDraggingStarted;
+
+    SvxZoomSliderControl_Impl() :
+        mnCurrentZoom( 0 ),
+        mnMinZoom( 0 ),
+        mnMaxZoom( 0 ),
+        mnSliderCenter( 0 ),
+        mbValuesSet( false ),
+        mbDraggingStarted( false ) {}
+};
+
+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
+
+// nOffset refers to the origin of the control:
+// + ----------- -
+sal_uInt16 SvxZoomSliderControl::Offset2Zoom( tools::Long nOffset ) const
+{
+    const tools::Long nControlWidth = getControlRect().GetWidth();
+    sal_uInt16 nRet = 0;
+
+    if ( nOffset < nSliderXOffset )
+        return mxImpl->mnMinZoom;
+
+    if ( nOffset > nControlWidth - nSliderXOffset )
+        return mxImpl->mnMaxZoom;
+
+    // check for snapping points:
+    sal_uInt16 nCount = 0;
+    for ( const tools::Long nCurrent : mxImpl->maSnappingPointOffsets )
+    {
+        if ( std::abs(nCurrent - nOffset) < nSnappingEpsilon )
+        {
+            nOffset = nCurrent;
+            nRet = mxImpl->maSnappingPointZooms[ nCount ];
+            break;
+        }
+        ++nCount;
+    }
+
+    if ( 0 == nRet )
+    {
+        if ( nOffset < nControlWidth / 2 )
+        {
+            // first half of slider
+            const tools::Long nFirstHalfRange = mxImpl->mnSliderCenter - mxImpl->mnMinZoom;
+            const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
+            const tools::Long nZoomPerSliderPixel = (1000 * nFirstHalfRange) / nHalfSliderWidth;
+            const tools::Long nOffsetToSliderLeft = nOffset - nSliderXOffset;
+            nRet = mxImpl->mnMinZoom + sal_uInt16( nOffsetToSliderLeft * nZoomPerSliderPixel / 1000 );
+        }
+        else
+        {
+            // second half of slider
+            const tools::Long nSecondHalfRange = mxImpl->mnMaxZoom - mxImpl->mnSliderCenter;
+            const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
+            const tools::Long nZoomPerSliderPixel = 1000 * nSecondHalfRange / nHalfSliderWidth;
+            const tools::Long nOffsetToSliderCenter = nOffset - nControlWidth/2;
+            nRet = mxImpl->mnSliderCenter + sal_uInt16( nOffsetToSliderCenter * nZoomPerSliderPixel / 1000 );
+        }
+    }
+
+    if ( nRet < mxImpl->mnMinZoom )
+        nRet = mxImpl->mnMinZoom;
+    else if ( nRet > mxImpl->mnMaxZoom )
+        nRet = mxImpl->mnMaxZoom;
+
+    return nRet;
+}
+
+// returns the offset to the left control border
+tools::Long SvxZoomSliderControl::Zoom2Offset( sal_uInt16 nCurrentZoom ) const
+{
+    const tools::Long nControlWidth = getControlRect().GetWidth();
+    tools::Long nRet = nSliderXOffset;
+
+    const tools::Long nHalfSliderWidth = nControlWidth/2 - nSliderXOffset;
+
+    if ( nCurrentZoom <= mxImpl->mnSliderCenter )
+    {
+        nCurrentZoom = nCurrentZoom - mxImpl->mnMinZoom;
+        const tools::Long nFirstHalfRange = mxImpl->mnSliderCenter - mxImpl->mnMinZoom;
+        const tools::Long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth  / nFirstHalfRange;
+        const tools::Long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
+        nRet += nOffset;
+    }
+    else
+    {
+        nCurrentZoom = nCurrentZoom - mxImpl->mnSliderCenter;
+        const tools::Long nSecondHalfRange = mxImpl->mnMaxZoom - mxImpl->mnSliderCenter;
+        const tools::Long nSliderPixelPerZoomPercent = 1000 * nHalfSliderWidth  / nSecondHalfRange;
+        const tools::Long nOffset = (nSliderPixelPerZoomPercent * nCurrentZoom) / 1000;
+        nRet += nHalfSliderWidth + nOffset;
+    }
+
+    return nRet;
+}
+
+SvxZoomSliderControl::SvxZoomSliderControl( sal_uInt16 _nSlotId,  sal_uInt16 _nId, StatusBar& rStatusBar ) :
+    SfxStatusBarControl( _nSlotId, _nId, rStatusBar ),
+    mxImpl( new SvxZoomSliderControl_Impl )
+{
+    mxImpl->maSliderButton   = Image(StockImage::Yes, RID_SVXBMP_SLIDERBUTTON);
+    mxImpl->maIncreaseButton = Image(StockImage::Yes, RID_SVXBMP_SLIDERINCREASE);
+    mxImpl->maDecreaseButton = Image(StockImage::Yes, RID_SVXBMP_SLIDERDECREASE);
+}
+
+SvxZoomSliderControl::~SvxZoomSliderControl()
+{
+}
+
+void SvxZoomSliderControl::StateChangedAtStatusBarControl( sal_uInt16 /*nSID*/, SfxItemState eState, const SfxPoolItem* pState )
+{
+    if ( (SfxItemState::DEFAULT != eState) || pState->IsVoidItem() )
+    {
+        GetStatusBar().SetItemText( GetId(), "" );
+        mxImpl->mbValuesSet   = false;
+    }
+    else
+    {
+        assert( dynamic_cast<const SvxZoomSliderItem*>( pState) && "invalid item type: should be a SvxZoomSliderItem" );
+        mxImpl->mnCurrentZoom = static_cast<const SvxZoomSliderItem*>( pState )->GetValue();
+        mxImpl->mnMinZoom     = static_cast<const SvxZoomSliderItem*>( pState )->GetMinZoom();
+        mxImpl->mnMaxZoom     = static_cast<const SvxZoomSliderItem*>( pState )->GetMaxZoom();
+        mxImpl->mnSliderCenter= 100;
+        mxImpl->mbValuesSet   = true;
+
+        if ( mxImpl->mnSliderCenter == mxImpl->mnMaxZoom )
+            mxImpl->mnSliderCenter = mxImpl->mnMinZoom + static_cast<sal_uInt16>((mxImpl->mnMaxZoom - mxImpl->mnMinZoom) * 0.5);
+
+
+        DBG_ASSERT( mxImpl->mnMinZoom <= mxImpl->mnCurrentZoom &&
+                    mxImpl->mnMinZoom <  mxImpl->mnSliderCenter &&
+                    mxImpl->mnMaxZoom >= mxImpl->mnCurrentZoom &&
+                    mxImpl->mnMaxZoom > mxImpl->mnSliderCenter,
+                    "Looks like the zoom slider item is corrupted" );
+
+        const css::uno::Sequence < sal_Int32 > rSnappingPoints = static_cast<const SvxZoomSliderItem*>( pState )->GetSnappingPoints();
+        mxImpl->maSnappingPointOffsets.clear();
+        mxImpl->maSnappingPointZooms.clear();
+
+        // get all snapping points:
+        std::set< sal_uInt16 > aTmpSnappingPoints;
+        for ( const sal_Int32 nSnappingPoint : rSnappingPoints )
+        {
+            aTmpSnappingPoints.insert( 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 )
+            {
+                mxImpl->maSnappingPointOffsets.push_back( nCurrentOffset );
+                mxImpl->maSnappingPointZooms.push_back( nCurrent );
+                nLastOffset = nCurrentOffset;
+            }
+        }
+    }
+
+    forceRepaint();
+}
+
+void SvxZoomSliderControl::Paint( const UserDrawEvent& rUsrEvt )
+{
+    if ( !mxImpl->mbValuesSet )
+        return;
+
+    const tools::Rectangle     aControlRect = getControlRect();
+    vcl::RenderContext* pDev = rUsrEvt.GetRenderContext();
+    tools::Rectangle           aRect = rUsrEvt.GetRect();
+    tools::Rectangle           aSlider = aRect;
+
+    tools::Long nSliderHeight  = 1 * pDev->GetDPIScaleFactor();
+    tools::Long nSnappingHeight = 2 * pDev->GetDPIScaleFactor();
+
+    aSlider.AdjustTop((aControlRect.GetHeight() - nSliderHeight)/2 );
+    aSlider.SetBottom( aSlider.Top() + nSliderHeight - 1 );
+    aSlider.AdjustLeft(nSliderXOffset );
+    aSlider.AdjustRight( -nSliderXOffset );
+
+    Color               aOldLineColor = pDev->GetLineColor();
+    Color               aOldFillColor = pDev->GetFillColor();
+
+    const StyleSettings& rStyleSettings = Application::GetSettings().GetStyleSettings();
+    pDev->SetLineColor( rStyleSettings.GetDarkShadowColor() );
+    pDev->SetFillColor( rStyleSettings.GetDarkShadowColor() );
+
+    // draw slider
+    pDev->DrawRect( aSlider );
+    // shadow
+    pDev->SetLineColor( rStyleSettings.GetShadowColor() );
+    pDev->DrawLine(Point(aSlider.Left()+1,aSlider.Bottom()+1), Point(aSlider.Right()+1,aSlider.Bottom()+1));
+    pDev->SetLineColor( rStyleSettings.GetDarkShadowColor() );
+
+    // draw snapping points:
+    for ( const auto& rSnappingPoint : mxImpl->maSnappingPointOffsets )
+    {
+        tools::Long nSnapPosX = aRect.Left() + rSnappingPoint;
+
+        pDev->DrawRect( tools::Rectangle( nSnapPosX - 1, aSlider.Top() - nSnappingHeight,
+                    nSnapPosX, aSlider.Bottom() + nSnappingHeight ) );
+    }
+
+    // draw slider button
+    Point aImagePoint = aRect.TopLeft();
+    aImagePoint.AdjustX(Zoom2Offset( mxImpl->mnCurrentZoom ) );
+    aImagePoint.AdjustX( -(mxImpl->maSliderButton.GetSizePixel().Width()/2) );
+    aImagePoint.AdjustY((aControlRect.GetHeight() - mxImpl->maSliderButton.GetSizePixel().Height())/2 );
+    pDev->DrawImage( aImagePoint, mxImpl->maSliderButton );
+
+    // draw decrease button
+    aImagePoint = aRect.TopLeft();
+    aImagePoint.AdjustX((nSliderXOffset - mxImpl->maDecreaseButton.GetSizePixel().Width())/2 );
+    aImagePoint.AdjustY((aControlRect.GetHeight() - mxImpl->maDecreaseButton.GetSizePixel().Height())/2 );
+    pDev->DrawImage( aImagePoint, mxImpl->maDecreaseButton );
+
+    // draw increase button
+    aImagePoint.setX( aRect.Left() + aControlRect.GetWidth() - mxImpl->maIncreaseButton.GetSizePixel().Width() - (nSliderXOffset - mxImpl->maIncreaseButton.GetSizePixel().Height())/2 );
+    pDev->DrawImage( aImagePoint, mxImpl->maIncreaseButton );
+
+    pDev->SetLineColor( aOldLineColor );
+    pDev->SetFillColor( aOldFillColor );
+}
+
+bool SvxZoomSliderControl::MouseButtonDown( const MouseEvent & rEvt )
+{
+    if ( !mxImpl->mbValuesSet )
+        return true;
+
+    const tools::Rectangle aControlRect = getControlRect();
+    const Point aPoint = rEvt.GetPosPixel();
+    const sal_Int32 nXDiff = aPoint.X() - aControlRect.Left();
+
+    tools::Long nIncDecWidth   = mxImpl->maIncreaseButton.GetSizePixel().Width();
+
+    const tools::Long nButtonLeftOffset = (nSliderXOffset - nIncDecWidth)/2;
+    const tools::Long nButtonRightOffset = (nSliderXOffset + nIncDecWidth)/2;
+
+    const tools::Long nOldZoom = mxImpl->mnCurrentZoom;
+
+    // click to - button
+    if ( nXDiff >= nButtonLeftOffset && nXDiff <= nButtonRightOffset )
+        mxImpl->mnCurrentZoom = basegfx::zoomtools::zoomOut( static_cast<int>(mxImpl->mnCurrentZoom) );
+    // click to + button
+    else if ( nXDiff >= aControlRect.GetWidth() - nSliderXOffset + nButtonLeftOffset &&
+              nXDiff <= aControlRect.GetWidth() - nSliderXOffset + nButtonRightOffset )
+        mxImpl->mnCurrentZoom = basegfx::zoomtools::zoomIn( static_cast<int>(mxImpl->mnCurrentZoom) );
+    // click to slider
+    else if( nXDiff >= nSliderXOffset && nXDiff <= aControlRect.GetWidth() - nSliderXOffset )
+    {
+        mxImpl->mnCurrentZoom = Offset2Zoom( nXDiff );
+        mxImpl->mbDraggingStarted = true;
+    }
+
+    if ( mxImpl->mnCurrentZoom < mxImpl->mnMinZoom )
+        mxImpl->mnCurrentZoom = mxImpl->mnMinZoom;
+    else if ( mxImpl->mnCurrentZoom > mxImpl->mnMaxZoom )
+        mxImpl->mnCurrentZoom = mxImpl->mnMaxZoom;
+
+    if ( nOldZoom == mxImpl->mnCurrentZoom )
+        return true;
+
+    repaintAndExecute();
+
+    return true;
+}
+
+bool SvxZoomSliderControl::MouseButtonUp( const MouseEvent & )
+{
+    mxImpl->mbDraggingStarted = false;
+    return true;
+}
+
+bool SvxZoomSliderControl::MouseMove( const MouseEvent & rEvt )
+{
+    if ( !mxImpl->mbValuesSet )
+        return true;
+
+    const short nButtons = rEvt.GetButtons();
+    const tools::Rectangle aControlRect = getControlRect();
+    const Point aPoint = rEvt.GetPosPixel();
+    const sal_Int32 nXDiff = aPoint.X() - aControlRect.Left();
+
+    // check mouse move with button pressed
+    if ( 1 == nButtons && mxImpl->mbDraggingStarted )
+    {
+        if ( nXDiff >= nSliderXOffset && nXDiff <= aControlRect.GetWidth() - nSliderXOffset )
+        {
+            mxImpl->mnCurrentZoom = Offset2Zoom( nXDiff );
+
+            repaintAndExecute();
+        }
+    }
+
+    // Tooltips
+
+    tools::Long nIncDecWidth = mxImpl->maIncreaseButton.GetSizePixel().Width();
+
+    const tools::Long nButtonLeftOffset = (nSliderXOffset - nIncDecWidth)/2;
+    const tools::Long nButtonRightOffset = (nSliderXOffset + nIncDecWidth)/2;
+
+    // click to - button
+    if ( nXDiff >= nButtonLeftOffset && nXDiff <= nButtonRightOffset )
+        GetStatusBar().SetQuickHelpText(GetId(), SvxResId(RID_SVXSTR_ZOOM_OUT));
+    // click to + button
+    else if ( nXDiff >= aControlRect.GetWidth() - nSliderXOffset + nButtonLeftOffset &&
+              nXDiff <= aControlRect.GetWidth() - nSliderXOffset + nButtonRightOffset )
+        GetStatusBar().SetQuickHelpText(GetId(), SvxResId(RID_SVXSTR_ZOOM_IN));
+    else
+        // don't hide the slider and its handle with a tooltip during zooming
+        GetStatusBar().SetQuickHelpText(GetId(), "");
+
+    return true;
+}
+
+void SvxZoomSliderControl::forceRepaint() const
+{
+    GetStatusBar().SetItemData(GetId(), nullptr);
+}
+
+void SvxZoomSliderControl::repaintAndExecute()
+{
+    forceRepaint();
+
+    // commit state change
+    SvxZoomSliderItem aZoomSliderItem(mxImpl->mnCurrentZoom);
+
+    css::uno::Any any;
+    aZoomSliderItem.QueryValue(any);
+
+    css::uno::Sequence<css::beans::PropertyValue> aArgs{ comphelper::makePropertyValue("ZoomSlider",
+                                                                                       any) };
+    execute(aArgs);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */