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widget/xpwidgets/WidgetUtils.cpp@44a2da4a2ab2 (annotated)

widget/xpwidgets/WidgetUtils.cpp

Fri, 16 Jan 2015 04:50:19 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Fri, 16 Jan 2015 04:50:19 +0100

branch

TOR_BUG_9701

changeset 13

44a2da4a2ab2

permissions

-rw-r--r--

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

michael@0	1	/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0	2	* vim: sw=2 ts=8 et :
michael@0	3	*/
michael@0	4	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	5	* License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0	6	* You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	7
michael@0	8	#include "mozilla/WidgetUtils.h"
michael@0	9
michael@0	10	namespace mozilla {
michael@0	11
michael@0	12	gfx::Matrix
michael@0	13	ComputeTransformForRotation(const nsIntRect& aBounds,
michael@0	14	ScreenRotation aRotation)
michael@0	15	{
michael@0	16	gfx::Matrix transform;
michael@0	17	switch (aRotation) {
michael@0	18	case ROTATION_0:
michael@0	19	break;
michael@0	20	case ROTATION_90:
michael@0	21	transform.Translate(aBounds.width, 0);
michael@0	22	transform = gfx::Matrix::Rotation(M_PI / 2) * transform;
michael@0	23	break;
michael@0	24	case ROTATION_180:
michael@0	25	transform.Translate(aBounds.width, aBounds.height);
michael@0	26	transform = gfx::Matrix::Rotation(M_PI) * transform;
michael@0	27	break;
michael@0	28	case ROTATION_270:
michael@0	29	transform.Translate(0, aBounds.height);
michael@0	30	transform = gfx::Matrix::Rotation(M_PI * 3 / 2) * transform;
michael@0	31	break;
michael@0	32	default:
michael@0	33	MOZ_CRASH("Unknown rotation");
michael@0	34	}
michael@0	35	return transform;
michael@0	36	}
michael@0	37
michael@0	38	} // namespace mozilla