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85 lines
2.7 KiB
85 lines
2.7 KiB
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
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/*
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* go-units.h :
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*
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* Copyright (C) 2003-2004 Jody Goldberg (jody@gnome.org)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#ifndef GO_UNITS_H
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#define GO_UNITS_H
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#include <glib.h>
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G_BEGIN_DECLS
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/* Conversion factors */
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/* The following number is the least common multiplier of 254 (1/10mm), 72(pt), 100000, and 576 */
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/* This way inch, pt, and mm are all integer multipliers (in fact, a nanometer is.) */
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/* (Of course that is only true because we use the lobotomized pt size so that
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1inch is exactly 72pt.) */
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#define PT_PER_IN 72
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#define CM_PER_IN 254
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#define EMU_PER_IN 914400
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#define UN_PER_IN 228600000
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#define UN_PER_EMU (UN_PER_IN/EMU_PER_IN)
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#define UN_PER_PT (UN_PER_IN/PT_PER_IN)
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#define UN_PER_CM (UN_PER_IN/CM_PER_IN)
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#define GO_IN_TO_UN(inch) ((inch)*UN_PER_IN)
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#define GO_IN_TO_PT(inch) ((inch)*PT_PER_IN)
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#define GO_IN_TO_CM(inch) ((inch)*CM_PER_IN/100)
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#define GO_IN_TO_EMU(inch) ((inch)*EMU_PER_IN)
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#define GO_UN_TO_IN(unit) ((unit)/UN_PER_IN)
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#define GO_UN_TO_PT(unit) ((unit)/UN_PER_PT)
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#define GO_UN_TO_CM(unit) ((unit)/UN_PER_CM/100)
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#define GO_UN_TO_EMU(unit) ((unit)/UN_PER_EMU)
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#define GO_PT_TO_UN(pt) ((pt)* UN_PER_PT)
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#define GO_PT_TO_IN(pt) ((pt) /PT_PER_IN)
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#define GO_PT_TO_CM(pt) ((pt)* CM_PER_IN/PT_PER_IN/100)
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#define GO_PT_TO_EMU(pt) ((pt)*EMU_PER_IN/PT_PER_IN)
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#define GO_CM_TO_UN(cm) ((cm)*100*UN_PER_CM)
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#define GO_CM_TO_IN(cm) ((cm)*100 /CM_PER_IN)
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#define GO_CM_TO_PT(cm) ((cm)*100*PT_PER_IN/CM_PER_IN)
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#define GO_CM_TO_EMU(cm) ((cm)*100*PT_PER_IN/EMU_PER_IN)
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#define GO_EMU_TO_UN(emu) ((emu)*UN_PER_EMU)
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#define GO_EMU_TO_IN(emu) ((emu) /EMU_PER_IN)
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#define GO_EMU_TO_PT(emu) ((emu)*PT_PER_IN/EMU_PER_IN)
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#define GO_EMU_TO_CM(emu) ((emu)*CM_PER_IN/EMU_PER_IN/100)
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typedef gint64 go_unit_t;
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#define GO_UNIT_T_FORMAT G_GINT64_FORMAT
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typedef struct {
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go_unit_t x;
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go_unit_t y;
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} GoPoint;
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typedef struct {
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go_unit_t top;
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go_unit_t left;
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go_unit_t bottom;
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go_unit_t right;
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} GoRect;
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G_END_DECLS
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#endif /* GO_UNITS_H */
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