Hi, this patch does round zoom values beginning with 50 to a multiple of 5, with 100 to one of 10, with 500 to one of 50 and with 1000 to one of 100. The step 100 is enforced to have one fixed point. The zoom factor was also changed from 1.2 to 1.1. Regards Tim -- SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg) Maxfeldstr. 5, 90409 Nürnberg, Germany T: +49 (0) 911 74053-0 F: +49 (0) 911 74053-483 http://www.suse.de/
From 594d7b4f6821cbe98b65c3a8c235f86ad7f2dcbc Mon Sep 17 00:00:00 2001
From: Tim Hardeck <thardeck@suse.com>
Date: Wed, 18 Jan 2012 16:42:55 +0100
Subject: [PATCH] optimized zoom to use more common intervals
Round zoom values beginning with 50 to a multiple of 5, with 100 to one
of 10, with 500 to one of 50 and with 1000 to one of 100.
The step 100 is enforced to have one fixed point.
The zoom factor was also changed from 1.2 to 1.1.
---
basegfx/Library_basegfx.mk | 1 +
basegfx/Package_inc.mk | 1 +
basegfx/StaticLibrary_basegfx_s.mk | 1 +
basegfx/inc/basegfx/tools/zoomtools.hxx | 57 +++++++++++++
basegfx/source/tools/zoomtools.cxx | 139 +++++++++++++++++++++++++++++++
sc/source/ui/view/prevwsh.cxx | 5 +-
sc/source/ui/view/tabview.cxx | 6 +-
sd/source/ui/view/viewshel.cxx | 6 +-
svx/inc/svx/zoom_def.hxx | 3 -
svx/source/stbctrls/zoomsliderctrl.cxx | 6 +-
sw/source/ui/uiview/viewport.cxx | 6 +-
11 files changed, 214 insertions(+), 17 deletions(-)
create mode 100644 basegfx/inc/basegfx/tools/zoomtools.hxx
create mode 100644 basegfx/source/tools/zoomtools.cxx
diff --git a/basegfx/Library_basegfx.mk b/basegfx/Library_basegfx.mk
index fa0607b..fc6a479 100644
--- a/basegfx/Library_basegfx.mk
+++ b/basegfx/Library_basegfx.mk
@@ -66,6 +66,7 @@ $(eval $(call gb_Library_add_linked_libs,basegfx,\
$(eval $(call gb_Library_add_exception_objects,basegfx,\
basegfx/source/tools/b2dclipstate \
basegfx/source/tools/canvastools \
+ basegfx/source/tools/zoomtools \
basegfx/source/tools/gradienttools \
basegfx/source/tools/keystoplerp \
basegfx/source/tools/liangbarsky \
diff --git a/basegfx/Package_inc.mk b/basegfx/Package_inc.mk
index 5767a8f..13b5ff8 100644
--- a/basegfx/Package_inc.mk
+++ b/basegfx/Package_inc.mk
@@ -37,6 +37,7 @@ $(eval $(call gb_Package_add_file,basegfx_inc,inc/basegfx/tools/unopolypolygon.h
$(eval $(call gb_Package_add_file,basegfx_inc,inc/basegfx/tools/tools.hxx,basegfx/tools/tools.hxx))
$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/tools/unotools.hxx,basegfx/tools/unotools.hxx))
$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/tools/gradienttools.hxx,basegfx/tools/gradienttools.hxx))
+$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/tools/zoomtools.hxx,basegfx/tools/zoomtools.hxx))
$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/numeric/ftools.hxx,basegfx/numeric/ftools.hxx))
$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/tuple/b3i64tuple.hxx,basegfx/tuple/b3i64tuple.hxx))
$(eval $(call
gb_Package_add_file,basegfx_inc,inc/basegfx/tuple/b3dtuple.hxx,basegfx/tuple/b3dtuple.hxx))
diff --git a/basegfx/StaticLibrary_basegfx_s.mk b/basegfx/StaticLibrary_basegfx_s.mk
index 79d6ed9..69616f7 100644
--- a/basegfx/StaticLibrary_basegfx_s.mk
+++ b/basegfx/StaticLibrary_basegfx_s.mk
@@ -72,6 +72,7 @@ $(WORKDIR)/CustomTarget/basegfx/source/%.cxx : $(SRCDIR)/basegfx/source/%.cxx
$(eval $(call gb_StaticLibrary_add_generated_exception_objects,basegfx_s,\
CustomTarget/basegfx/source/tools/liangbarsky \
CustomTarget/basegfx/source/tools/canvastools \
+ CustomTarget/basegfx/source/tools/zoomtools \
CustomTarget/basegfx/source/tools/gradienttools \
CustomTarget/basegfx/source/tools/keystoplerp \
CustomTarget/basegfx/source/tools/unopolypolygon \
diff --git a/basegfx/inc/basegfx/tools/zoomtools.hxx b/basegfx/inc/basegfx/tools/zoomtools.hxx
new file mode 100644
index 0000000..8deb385
--- /dev/null
+++ b/basegfx/inc/basegfx/tools/zoomtools.hxx
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Version: MPL 1.1 / GPLv3+ / LGPLv3+
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License or as specified alternatively below. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Major Contributor(s):
+ * Copyright (C) 2012 Tim Hardeck <thardeck@suse.com>
+ *
+ * All Rights Reserved.
+ *
+ * For minor contributions see the git repository.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+ * the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+ * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+ * instead of those above.
+ */
+
+#ifndef _BGFX_TOOLS_ZOOMTOOLS_HXX
+#define _BGFX_TOOLS_ZOOMTOOLS_HXX
+
+#include <sal/types.h>
+#include <basegfx/basegfxdllapi.h>
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace basegfx
+{
+ /** This namespace provides functions for optimized geometric zooming
+ */
+ namespace zoomtools
+ {
+ BASEGFX_DLLPUBLIC static const double ZOOM_FACTOR = 1.1;
+
+ BASEGFX_DLLPUBLIC static long roundMultiple(long nCurrent, int nMultiple);
+ BASEGFX_DLLPUBLIC static long roundZoom(double nCurrent);
+ BASEGFX_DLLPUBLIC static long enforceStep(long nCurrent, long nPrevious, int nStep);
+ BASEGFX_DLLPUBLIC long zoomOut(long nCurrent);
+ BASEGFX_DLLPUBLIC long zoomIn(long nCurrent);
+ BASEGFX_DLLPUBLIC int zoomOut(int nCurrent);
+ BASEGFX_DLLPUBLIC int zoomIn(int nCurrent);
+ }
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/basegfx/source/tools/zoomtools.cxx b/basegfx/source/tools/zoomtools.cxx
new file mode 100644
index 0000000..dbd2260
--- /dev/null
+++ b/basegfx/source/tools/zoomtools.cxx
@@ -0,0 +1,139 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Version: MPL 1.1 / GPLv3+ / LGPLv3+
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License or as specified alternatively below. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * Major Contributor(s):
+ * Copyright (C) 2012 Tim Hardeck <thardeck@suse.com>
+ *
+ * All Rights Reserved.
+ *
+ * For minor contributions see the git repository.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 3 or later (the "GPLv3+"), or
+ * the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"),
+ * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
+ * instead of those above.
+ */
+
+#include <basegfx/tools/zoomtools.hxx>
+
+namespace basegfx
+{
+ namespace zoomtools
+ {
+ /**
+ * Round a value against a specified multiple. Values below half
+ * of the multiple are rounded down and all others are rounded up.
+ *
+ * @param nCurrent current value
+ * @param nMultiple multiple against which the current value is rounded
+ */
+ static long roundMultiple(long nCurrent, int nMultiple)
+ {
+ // round zoom to a multiple of nMultiple
+ return (( nCurrent + nMultiple / 2 ) - ( nCurrent + nMultiple / 2 ) % nMultiple) ;
+ }
+
+ /**
+ * Convert geometric progression results into more common values by
+ * rounding them against certain multiples depending on the size.
+ * Beginning with 50 the multiple is 5, with 100, 10, and so on.
+ *
+ * @param nCurrent current zoom factor
+ */
+ static long roundZoom(double nCurrent)
+ {
+ // convert nCurrent properly to int
+ long nNew = nCurrent + 0.5;
+
+ // round to more common numbers above 50
+ if (nNew > 1000) {
+ nNew = roundMultiple(nNew, 100);
+ } else if ( nNew > 500 ) {
+ nNew = roundMultiple(nNew, 50);
+ } else if ( nNew > 100 ) {
+ nNew = roundMultiple(nNew, 10);
+ } else if ( nNew > 50 ) {
+ nNew = roundMultiple(nNew, 5);
+ }
+
+ return nNew;
+ }
+
+ /**
+ * Make sure that a certain step isn't skipped during the zooming
+ * progress.
+ *
+ * @param nCurrent current zoom factor
+ * @param nPrevious previous zoom factor
+ * @param nStep step which shouldn't be skipped
+ */
+ static long enforceStep(long nCurrent, long nPrevious, int nStep)
+ {
+ if ((( nCurrent > nStep ) && ( nPrevious < nStep ))
+ || (( nCurrent < nStep ) && ( nPrevious > nStep )))
+ return nStep;
+ else
+ return nCurrent;
+ }
+
+ /**
+ * Increasing the zoom level.
+ *
+ * @param nCurrent current zoom factor
+ */
+ long zoomIn(long nCurrent)
+ {
+ long nNew = roundZoom( nCurrent * ZOOM_FACTOR );
+ // make sure 100% isn't skipped
+ nNew = enforceStep(nNew, nCurrent, 100);
+ return nNew;
+ }
+
+ /**
+ * Decreasing the zoom level.
+ *
+ * @param nCurrent current zoom factor
+ */
+ long zoomOut(long nCurrent)
+ {
+ long nNew = roundZoom( nCurrent / ZOOM_FACTOR );
+ // make sure 100% isn't skipped
+ nNew = enforceStep(nNew, nCurrent, 100);
+ return nNew;
+ }
+
+ /**
+ * Increasing the zoom level.
+ *
+ * @param nCurrent current zoom factor
+ */
+ int zoomIn(int nCurrent)
+ {
+ return (int) zoomIn((long) nCurrent);
+ }
+
+ /**
+ * Decreasing the zoom level.
+ *
+ * @param nCurrent current zoom factor
+ */
+ int zoomOut(int nCurrent)
+ {
+ return (int) zoomOut((long) nCurrent);
+ }
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/source/ui/view/prevwsh.cxx b/sc/source/ui/view/prevwsh.cxx
index e85f9ca..d024069 100644
--- a/sc/source/ui/view/prevwsh.cxx
+++ b/sc/source/ui/view/prevwsh.cxx
@@ -75,6 +75,7 @@
#include <svx/svxdlg.hxx>
#include <svx/dialogs.hrc>
+#include <basegfx/tools/zoomtools.hxx>
#include <svx/zoom_def.hxx>
#include <rtl/math.hxx>
@@ -449,9 +450,9 @@ sal_Bool ScPreviewShell::ScrollCommand( const CommandEvent& rCEvt )
long nOld = pPreview->GetZoom();
long nNew = nOld;
if ( pData->GetDelta() < 0 )
- nNew = Max( (long) MINZOOM, (long)::rtl::math::round( nOld / ZOOM_FACTOR ));
+ nNew = Max( (long) MINZOOM, basegfx::zoomtools::zoomOut( nOld ));
else
- nNew = Min( (long) MAXZOOM, (long)::rtl::math::round( nOld * ZOOM_FACTOR ));
+ nNew = Min( (long) MAXZOOM, basegfx::zoomtools::zoomIn( nOld ));
if ( nNew != nOld )
{
diff --git a/sc/source/ui/view/tabview.cxx b/sc/source/ui/view/tabview.cxx
index 326af1a..011cee2 100644
--- a/sc/source/ui/view/tabview.cxx
+++ b/sc/source/ui/view/tabview.cxx
@@ -149,7 +149,7 @@
#include <string>
#include <algorithm>
-#include <svx/zoom_def.hxx>
+#include <basegfx/tools/zoomtools.hxx>
#include <rtl/math.hxx>
#define SPLIT_MARGIN 30
@@ -1060,9 +1060,9 @@ bool ScTabView::ScrollCommand( const CommandEvent& rCEvt, ScSplitPos ePos )
long nOld = (long)(( rOldY.GetNumerator() * 100 ) / rOldY.GetDenominator());
long nNew = nOld;
if ( pData->GetDelta() < 0 )
- nNew = Max( (long) MINZOOM, (long)::rtl::math::round( nOld / ZOOM_FACTOR ));
+ nNew = Max( (long) MINZOOM, basegfx::zoomtools::zoomOut( nOld ));
else
- nNew = Min( (long) MAXZOOM, (long)::rtl::math::round( nOld * ZOOM_FACTOR ));
+ nNew = Min( (long) MAXZOOM, basegfx::zoomtools::zoomIn( nOld ));
if ( nNew != nOld )
{
diff --git a/sd/source/ui/view/viewshel.cxx b/sd/source/ui/view/viewshel.cxx
index b1cc2d3..147af9a 100644
--- a/sd/source/ui/view/viewshel.cxx
+++ b/sd/source/ui/view/viewshel.cxx
@@ -82,7 +82,7 @@
#include <sfx2/request.hxx>
#include "SpellDialogChildWindow.hxx"
-#include <svx/zoom_def.hxx>
+#include <basegfx/tools/zoomtools.hxx>
#include <rtl/math.hxx>
#include "Window.hxx"
@@ -719,9 +719,9 @@ bool ViewShell::HandleScrollCommand(const CommandEvent& rCEvt, ::sd::Window* pWi
long nNewZoom;
if( pData->GetDelta() < 0L )
- nNewZoom = Max( (long) pWin->GetMinZoom(), (long)::rtl::math::round(
nOldZoom / ZOOM_FACTOR ));
+ nNewZoom = Max( (long) pWin->GetMinZoom(),
basegfx::zoomtools::zoomOut( nOldZoom ));
else
- nNewZoom = Min( (long) pWin->GetMaxZoom(), (long)::rtl::math::round(
nOldZoom * ZOOM_FACTOR ));
+ nNewZoom = Min( (long) pWin->GetMaxZoom(), basegfx::zoomtools::zoomIn(
nOldZoom ));
SetZoom( nNewZoom );
Invalidate( SID_ATTR_ZOOM );
diff --git a/svx/inc/svx/zoom_def.hxx b/svx/inc/svx/zoom_def.hxx
index e194493..0a24476 100644
--- a/svx/inc/svx/zoom_def.hxx
+++ b/svx/inc/svx/zoom_def.hxx
@@ -8,7 +8,4 @@
#endif
-// zoom factor for Calc, Writer, Draw and Impress
-#define ZOOM_FACTOR 1.2
-
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/svx/source/stbctrls/zoomsliderctrl.cxx b/svx/source/stbctrls/zoomsliderctrl.cxx
index a845eb9..eeb9406 100644
--- a/svx/source/stbctrls/zoomsliderctrl.cxx
+++ b/svx/source/stbctrls/zoomsliderctrl.cxx
@@ -36,7 +36,7 @@
#include <svx/dialmgr.hxx>
#include <svx/dialogs.hrc>
-#include <svx/zoom_def.hxx>
+#include <basegfx/tools/zoomtools.hxx>
#include <rtl/math.hxx>
#include <set>
@@ -360,11 +360,11 @@ sal_Bool SvxZoomSliderControl::MouseButtonDown( const MouseEvent & rEvt )
// click to - button
if ( nXDiff >= nButtonLeftOffset && nXDiff <= nButtonRightOffset )
- mpImpl->mnCurrentZoom = ::rtl::math::round( mpImpl->mnCurrentZoom / ZOOM_FACTOR );
+ mpImpl->mnCurrentZoom = basegfx::zoomtools::zoomOut( mpImpl->mnCurrentZoom );
// click to + button
else if ( nXDiff >= aControlRect.GetWidth() - nSliderXOffset + nButtonLeftOffset &&
nXDiff <= aControlRect.GetWidth() - nSliderXOffset + nButtonRightOffset )
- mpImpl->mnCurrentZoom = ::rtl::math::round( mpImpl->mnCurrentZoom * ZOOM_FACTOR );
+ mpImpl->mnCurrentZoom = basegfx::zoomtools::zoomIn( mpImpl->mnCurrentZoom );
// click to slider
else if( nXDiff >= nSliderXOffset && nXDiff <= aControlRect.GetWidth() - nSliderXOffset )
mpImpl->mnCurrentZoom = Offset2Zoom( nXDiff );
diff --git a/sw/source/ui/uiview/viewport.cxx b/sw/source/ui/uiview/viewport.cxx
index e630087..5d0565c 100644
--- a/sw/source/ui/uiview/viewport.cxx
+++ b/sw/source/ui/uiview/viewport.cxx
@@ -52,7 +52,7 @@
#include <IDocumentSettingAccess.hxx>
-#include <svx/zoom_def.hxx>
+#include <basegfx/tools/zoomtools.hxx>
#include <rtl/math.hxx>
//Das SetVisArea der DocShell darf nicht vom InnerResizePixel gerufen werden.
@@ -1312,9 +1312,9 @@ sal_Bool SwView::HandleWheelCommands( const CommandEvent& rCEvt )
{
sal_uInt16 nFact = pWrtShell->GetViewOptions()->GetZoom();
if( 0L > pWData->GetDelta() )
- nFact = static_cast< sal_uInt16 >(Max( 20, (int)::rtl::math::round( nFact /
ZOOM_FACTOR )));
+ nFact = static_cast< sal_uInt16 >(Max( 20, basegfx::zoomtools::zoomOut( nFact )));
else
- nFact = static_cast< sal_uInt16 >(Min( 600, (int)::rtl::math::round( nFact *
ZOOM_FACTOR )));
+ nFact = static_cast< sal_uInt16 >(Min( 600, basegfx::zoomtools::zoomIn( nFact )));
SetZoom( SVX_ZOOM_PERCENT, nFact );
bOk = sal_True;
--
1.7.7
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