office-gobmx/starmath/inc/utility.hxx
Khaled Hosny 9e92a17cb6 starmath: Improve glyph positioning
Using twips everywhere and not rounding to pixels seems to improve
positioning (at least on hipdi displays). Hopefully the issue that
required rounding is no longer relevant.

Change-Id: I0ee4a4453b2a3d8e06be56d586761f7960a2d4d0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157044
Tested-by: Jenkins
Reviewed-by: خالد حسني <khaled@libreoffice.org>
2023-09-19 14:22:32 +02:00

130 lines
3.5 KiB
C++

/* -*- 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 .
*/
#pragma once
#include <sal/config.h>
#include "smdllapi.hxx"
#include <o3tl/unit_conversion.hxx>
#include <sal/log.hxx>
#include <vcl/font.hxx>
#include <vcl/weld.hxx>
#include <tools/fract.hxx>
#include <tools/mapunit.hxx>
#include <deque>
class SmViewShell;
SmViewShell * SmGetActiveView();
// SmFace
bool IsItalic( const vcl::Font &rFont );
bool IsBold( const vcl::Font &rFont );
class SM_DLLPUBLIC SmFace final : public vcl::Font
{
tools::Long nBorderWidth;
void Impl_Init();
public:
SmFace() :
Font(), nBorderWidth(-1) { Impl_Init(); }
SmFace(const Font& rFont) :
Font(rFont), nBorderWidth(-1) { Impl_Init(); }
SmFace(const OUString& rName, const Size& rSize) :
Font(rName, rSize), nBorderWidth(-1) { Impl_Init(); }
SmFace(const SmFace &rFace) :
Font(rFace), nBorderWidth(-1) { Impl_Init(); }
// overloaded version in order to supply a min value
// for font size (height). (Also used in ctor's to do so.)
void SetSize(const Size& rSize);
void SetBorderWidth(tools::Long nWidth) { nBorderWidth = nWidth; }
tools::Long GetBorderWidth() const;
tools::Long GetDefaultBorderWidth() const { return GetFontSize().Height() / 20 ; }
void FreezeBorderWidth() { nBorderWidth = GetDefaultBorderWidth(); }
SmFace & operator = (const SmFace &rFace);
};
SmFace & operator *= (SmFace &rFace, const Fraction &rFrac);
// SmFontPickList
class SmFontDialog;
class SmFontPickList
{
protected:
sal_uInt16 nMaxItems;
std::deque<vcl::Font> aFontVec;
public:
explicit SmFontPickList(sal_uInt16 nMax = 5) : nMaxItems(nMax) {}
virtual ~SmFontPickList() { Clear(); }
virtual void Insert(const vcl::Font &rFont);
void Clear();
vcl::Font Get(sal_uInt16 nPos = 0) const;
SmFontPickList& operator = (const SmFontPickList& rList);
void ReadFrom(const SmFontDialog& rDialog);
void WriteTo(SmFontDialog& rDialog) const;
};
// SmFontPickListBox
class SmFontPickListBox final : public SmFontPickList
{
private:
std::unique_ptr<weld::ComboBox> m_xWidget;
DECL_LINK(SelectHdl, weld::ComboBox&, void);
public:
SmFontPickListBox(std::unique_ptr<weld::ComboBox> pWidget);
SmFontPickListBox& operator = (const SmFontPickList& rList);
virtual void Insert(const vcl::Font &rFont) override;
};
// Math used to use 100ths of MM by default, but now uses twips
// which seems to improve (subpixel) positioning.
inline MapUnit SmMapUnit()
{
return MapUnit::MapTwip;
}
inline o3tl::Length SmO3tlLengthUnit()
{
return o3tl::Length::twip;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */