зеркало из https://github.com/mozilla/gecko-dev.git
106 строки
2.8 KiB
C++
106 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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//
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// File: UStClasses.cp
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//
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// This file contains a couple of stack-based save/restore classes
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//
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#include "UStClasses.h"
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//======================================================================================
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#pragma mark * StSetResAttrs
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//
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// Constructor. Set the resource handle attributes to the specified attributes. If
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// inAddAttrs is true, add the specified attributes to the current attributes; otherwise
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// reset the attributes completely.
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//
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StSetResAttrs::StSetResAttrs(Handle inResourceH, short inResAttrs, Boolean inAddAttrs) {
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Assert_(inResourceH != nil);
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mResourceH = nil;
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mSavedAttrs = ::GetResAttrs(inResourceH);
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ThrowIfResError_();
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::SetResAttrs(inResourceH, inAddAttrs ? (mSavedAttrs | inResAttrs) : inResAttrs);
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ThrowIfResError_();
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mResourceH = inResourceH;
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}
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//
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// Destructor
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//
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StSetResAttrs::~StSetResAttrs(void) {
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if ( mResourceH ) {
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::SetResAttrs(mResourceH, mSavedAttrs);
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OSErr theErr = ::ResError();
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Assert_(theErr == noErr);
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}
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}
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//======================================================================================
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#pragma mark * StExcludeVisibleRgn
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//
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// Constructor.
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//
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// Exclude the specified port rectangle from the current visible region.
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//
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StExcludeVisibleRgn::StExcludeVisibleRgn(LPane *inPane) {
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mGrafPtr = nil;
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Assert_(inPane != nil);
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FailNIL_(mSaveVisRgn = ::NewRgn());
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Rect portFrame;
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GrafPtr port = inPane->GetMacPort();
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inPane->CalcPortFrameRect(portFrame);
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StRegion tempRgn(portFrame);
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::CopyRgn(port->visRgn, mSaveVisRgn);
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::DiffRgn(port->visRgn, tempRgn, port->visRgn);
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mGrafPtr = port;
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mSavePortOrigin = topLeft(mGrafPtr->portRect);
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}
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//
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// Destructor.
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//
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StExcludeVisibleRgn::~StExcludeVisibleRgn(void) {
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if ( mGrafPtr != nil ) {
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Point deltaOrigin = topLeft(mGrafPtr->portRect);
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deltaOrigin.h -= mSavePortOrigin.h;
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deltaOrigin.v -= mSavePortOrigin.v;
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if ( (deltaOrigin.h != 0) || (deltaOrigin.v != 0) ) {
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::OffsetRgn(mSaveVisRgn, deltaOrigin.h, deltaOrigin.v);
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}
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RgnHandle tempRgn = mGrafPtr->visRgn;
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mGrafPtr->visRgn = mSaveVisRgn;
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::DisposeRgn(tempRgn);
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}
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}
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