1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is mozilla.org code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either of the GNU General Public License Version 2 or later (the "GPL"),
26 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
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33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #ifndef NSPOINT_H
39 : #define NSPOINT_H
40 :
41 : #include "nsCoord.h"
42 : #include "mozilla/gfx/BaseSize.h"
43 : #include "mozilla/gfx/BasePoint.h"
44 : #include "nsSize.h"
45 :
46 : struct nsIntPoint;
47 :
48 : struct nsPoint : public mozilla::gfx::BasePoint<nscoord, nsPoint> {
49 : typedef mozilla::gfx::BasePoint<nscoord, nsPoint> Super;
50 :
51 0 : nsPoint() : Super() {}
52 0 : nsPoint(const nsPoint& aPoint) : Super(aPoint) {}
53 0 : nsPoint(nscoord aX, nscoord aY) : Super(aX, aY) {}
54 :
55 : inline nsIntPoint ScaleToNearestPixels(float aXScale, float aYScale,
56 : nscoord aAppUnitsPerPixel) const;
57 : inline nsIntPoint ToNearestPixels(nscoord aAppUnitsPerPixel) const;
58 :
59 : // Converts this point from aFromAPP, an appunits per pixel ratio, to aToAPP.
60 : inline nsPoint ConvertAppUnits(PRInt32 aFromAPP, PRInt32 aToAPP) const;
61 : };
62 :
63 : struct nsIntPoint : public mozilla::gfx::BasePoint<PRInt32, nsIntPoint> {
64 : typedef mozilla::gfx::BasePoint<PRInt32, nsIntPoint> Super;
65 :
66 19 : nsIntPoint() : Super() {}
67 0 : nsIntPoint(const nsIntPoint& aPoint) : Super(aPoint) {}
68 18905 : nsIntPoint(PRInt32 aX, PRInt32 aY) : Super(aX, aY) {}
69 : };
70 :
71 : inline nsIntPoint
72 0 : nsPoint::ScaleToNearestPixels(float aXScale, float aYScale,
73 : nscoord aAppUnitsPerPixel) const
74 : {
75 : return nsIntPoint(
76 0 : NSToIntRoundUp(NSAppUnitsToDoublePixels(x, aAppUnitsPerPixel) * aXScale),
77 0 : NSToIntRoundUp(NSAppUnitsToDoublePixels(y, aAppUnitsPerPixel) * aYScale));
78 : }
79 :
80 : inline nsIntPoint
81 0 : nsPoint::ToNearestPixels(nscoord aAppUnitsPerPixel) const
82 : {
83 0 : return ScaleToNearestPixels(1.0f, 1.0f, aAppUnitsPerPixel);
84 : }
85 :
86 : inline nsPoint
87 0 : nsPoint::ConvertAppUnits(PRInt32 aFromAPP, PRInt32 aToAPP) const
88 : {
89 0 : if (aFromAPP != aToAPP) {
90 0 : nsPoint point;
91 0 : point.x = NSToCoordRound(NSCoordScale(x, aFromAPP, aToAPP));
92 0 : point.y = NSToCoordRound(NSCoordScale(y, aFromAPP, aToAPP));
93 0 : return point;
94 : }
95 0 : return *this;
96 : }
97 :
98 : #endif /* NSPOINT_H */
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