/// <summary>
/// 图形控制扩展
/// </summary>
/// <param name="data">当前解析数据</param>
internal unsafe PraphicControl(byte *data)
{
byte flag = *data;
MethodType = (PraphicControlMethodType)((flag >> 2) & 7);
IsUseInput = (byte)(flag & 2);
IsTransparentColor = (byte)(flag & 1);
DelayTime = *(short *)(data + 1);
TransparentColorIndex = *(data + 3);
}
/// <summary>
/// 添加图形控制扩展
/// </summary>
/// <param name="delayTime">延迟时间，单位1/100秒</param>
/// <param name="method">图形处置方法</param>
/// <param name="isUseInput">用户输入标志，指出是否期待用户有输入之后才继续进行下去，置位表示期待，值否表示不期待。</param>
/// <returns>图形控制扩展是否添加成功</returns>
public unsafe bool AddGraphicControl(short delayTime, PraphicControlMethodType method = PraphicControlMethodType.None
, bool isUseInput = false)
{
if (fileBuffer == null)
{
return(false);
}
if (delayTime <= 0)
{
delayTime = 1;
fixed(byte *bufferFixed = fileBuffer)
{
byte *currentBuffer = bufferFixed + bufferIndex;
*(int *)currentBuffer = 0x4f921 | ((int)method << 26) | (isUseInput ? (0x2000000) : 0);
*(int *)(currentBuffer + 4) = delayTime <= 0 ? 1 : (int)delayTime;
return(checkBuffer(bufferFixed, 8));
}
}
