зеркало из https://github.com/mozilla/gecko-dev.git
103 строки
2.8 KiB
C++
103 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef __H_CDeviceLoop
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#define __H_CDeviceLoop
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#pragma once
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/*======================================================================================
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DESCRIPTION: Implements an optimized stack-based device loop object.
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Example:
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Int16 depth;
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TDeviceLoop theLoop(frame, depth);
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if ( depth ) do {
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switch ( depth ) {
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case 1: // Black & white
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break;
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case 4: // 16 colors
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break;
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case 8: // 256 colors
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break;
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case 16: // Thousands of colors
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break;
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case 32: // Millions of colors
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break;
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}
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} while ( theLoop.NextDepth(depth) );
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MODIFICATIONS:
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Date Person Description
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---- ------ -----------
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======================================================================================*/
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/*====================================================================================*/
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#pragma mark INCLUDE FILES
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/*====================================================================================*/
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/*====================================================================================*/
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#pragma mark TYPEDEFS
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/*====================================================================================*/
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/*====================================================================================*/
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#pragma mark CONSTANTS
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/*====================================================================================*/
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/*====================================================================================*/
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#pragma mark CLASS DECLARATIONS
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/*====================================================================================*/
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#pragma mark -
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class CDeviceLoop {
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public:
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CDeviceLoop(const Rect &inLocalRect, Int16 &outFirstDepth);
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~CDeviceLoop(void);
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Boolean NextDepth(Int16 &outNextDepth);
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protected:
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void ClipToIntersection(const Rect &inLocalRect);
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// Instance variables
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Rect mGlobalRect;
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GDHandle mCurrentDevice;
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RgnHandle mSaveClip;
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};
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#endif // __H_CDeviceLoop
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