pjs/cmd/macfe/central/CImageIconMixin.h

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3.1 KiB
C
Исходник Обычный вид История

1998-07-20 19:55:36 +04:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
//
// CImageIconMixin
// Mike Pinkerton, Netscape Communications
//
// When you have an object that wants to draw itself using an image (gif, jpeg, etc),
// just mix this class in and call the appropriate routines when you want to draw.
// Most importantly, this handles cleaning up when the object goes away if it has
// made a request for an image that has yet to arrive.
//
#pragma once
#include <string>
#include "CIconCache.h"
#include "mimages.h"
//
// class CImageIconMixin
//
// Draw an image, most likely as an icon
//
class CImageIconMixin : public LListener
{
public:
CImageIconMixin ( ) { } ;
CImageIconMixin ( const string & inURL ) ;
virtual ~CImageIconMixin ( ) ;
// Change the url telling us which image to load. Safe to call even when an image
// load is pending, but will NOT re-request the new image.
virtual void SetImageURL ( const string & inNewURL ) ;
// Draw the image. Will begin loading it if the data has not yet arrived and will
// draw the standby in its place. Pass zero's for width and height to use image defaults
// or the image will be scaled to what you put in.
void DrawImage ( const Point & inTopLeft, const IconTransformType inTransform,
Uint32 inWidth, Uint32 inHeight ) const;
protected:
// Draw a scaled image as an icon. Override to draw differently
virtual void DoDrawing ( DrawingState & inState, const Point & inTopLeft,
const IconTransformType inTransform, Uint32 inWidth,
Uint32 inHeight ) const ;
// Draw something when the real image is not yet here.
virtual void DrawStandby ( const Point & inTopLeft,
const IconTransformType inTransform ) const = 0;
private:
string mURL;
}; // class CImageIconMixin
//
// class CTiledImageMixin
//
// Tile an image, for use as backgrounds in chrome or tables
//
class CTiledImageMixin : public CImageIconMixin
{
public:
CTiledImageMixin ( ) { };
CTiledImageMixin ( const string & inURL ) ;
virtual ~CTiledImageMixin ( ) ;
protected:
// Draw a image as a tiled image for drawing backgrounds. Width and Height are
// reinterpreted to mean the width and height of the area the image is being tiled
// in.
virtual void DoDrawing ( DrawingState & inState, const Point & inTopLeft,
const IconTransformType inTransform, Uint32 inWidth,
Uint32 inHeight ) const ;
}; // class CTiledImageMixin