image.c

来自「飞漫公司的minigui的1.6.8收费增值版本的demon等示例程序」· C语言 代码 · 共 78 行

/*
 * File: image.c
 *
 * Copyright (C) 1997 Raph Levien <[e-mail]>
 * Copyright (C) 1999 James McCollough <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

/*
 * This file implements image data transfer methods. It handles the transfer
 * of data from an Image to a DwImage widget.
 */

#include <stdio.h>
#include <string.h>

#include "msg.h"
#include "image.h"

/*
 * Local data
 */
//static size_t linebuf_size = 0;
//static guchar *linebuf = NULL;


/*
 * Create and initialize a new image structure.
 */
DilloImage *
 a_Image_new(gint width, gint height, const char *tooltip,
             const char *alt_text, gint32 bg_color)
{
   DilloImage *Image;

   Image = g_new(DilloImage, 1);
   Image->dw = (DwImage *) a_Dw_image_new(DW_IMAGE_RGB, tooltip, alt_text);
   Image->width = 0;
   Image->height = 0;
   Image->bg_color = bg_color;

   Image->RefCount = 1;

   return Image;
}

/*
 * Deallocate an Image structure
 */
static void Image_free(DilloImage *Image)
{
   g_free(Image);
}

/*
 * Unref and free if necessary
 */
void a_Image_unref(DilloImage *Image)
{
   _MSG(" %d ", Image->RefCount);
   if (Image && --Image->RefCount == 0)
      Image_free(Image);
}

/*
 * Add a reference to an Image struct
 */
void a_Image_ref(DilloImage *Image)
{
   if (Image)
      ++Image->RefCount;
}