c# 类似于QQ表情弹出框功能的二种实现方法

   以下是做项目时实现的二种类似于QQ表情弹出框功能的实现方法,方法一采用DataGridView实现,方法二通过ToolStripDropDown实现。

 

 一先贴出实现效果。

方法一 DataGridView效果

      

 

方法二ToolStripDropDown效果

 

二 二种方法实现的对比:

方法一 效果类似于QQ,鼠标放在上面时,可以看到显示的效果,但加裁速度有些慢。

方法二的效果类似于MSN,加裁速度比较快,鼠标放在上面时能显示图片的ToolTipText。

 

三 实现源代码

 (1) 方法一。该方法是把图片的位置值存放到DataGridVeiw各个单元格中,在DataGridView的dataGridView1_CellFormatting。这里使用到了e.Value中的Object类型。由于  e.Value为Object类型,所以可以直接显示图片。          

 

        private void dataGridView1_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
        {
            
//如果值不为空
            if(e.Value!=null)
            {
                
string path = e.Value.ToString();//得到路径值
                e.Value = GetImage(path);//根据路径值获取图片。因为e.Value是Object,图片文件可以直接显示
            }
            
else
            {
                e.Value 
= Properties.Resources.snow;//默读背景图片
            }
        }

 

 

在GetImage方法中,读取图片时采用File.OpenRead(path) 方法,该方法可以防止图片文件正在被另一程序访问或只读或未释放。如果采用Image.FormFile()则可能会出现异常。

 

        /// <summary>
        
/// 加裁图片
         
/// </summary>
        
/// <param name="path"></param>
        
/// <returns></returns>
        private object GetImage(string path)
        {
            
try
            {
                FileStream fs 
= File.OpenRead(path);//调用该方法,可以防止文件正在防问或只读或被锁定状态
                int filelength = 0;
                filelength 
= (int)fs.Length; //获得文件长度 
                  Byte[] image = new Byte[filelength]; //建立一个字节数组 
                  fs.Read(image, 0, filelength); //按字节流读取 
                  System.Drawing.Image result = System.Drawing.Image.FromStream(fs);
                fs.Close();
                
return result;

            }
            
catch (Exception)
            {
            }
            
return null

        }

 

 

当鼠标通过图片时用PictureBox显示图片

 

            DataGridViewCellStyle sty = new DataGridViewCellStyle();
            sty.BackColor 
= Color.Snow;
            
            
object path = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value;
            
foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                
foreach (DataGridViewCell cell in row.Cells)
                {
                    cell.Style 
= sty;
                }
            }
            DataGridViewCellStyle sty2 
= new DataGridViewCellStyle();
            sty2.BackColor 
= Color.Blue;
            
if (path != null)
            {
                dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Style 
= sty2;
                Image img 
= Bitmap.FromFile(path.ToString());
                
if (e.RowIndex < 4 && e.ColumnIndex < 4)
                {
                    pictureBox1.Visible 
= false;
                    pictureBox31.Visible 
= true;
                }
                
else 
                {
                    pictureBox1.Visible 
= true;
                    pictureBox31.Visible 
= false;
                }
                
                pictureBox1.Image 
= img;
                pictureBox31.Image 
= img;
            }
            
else
            {
                pictureBox1.Image 
= Properties.Resources.snow;
                pictureBox31.Image 
= Properties.Resources.snow;
            }

 

以上就是方法一的主要实现过程,该方法有一个不好的地方就是速度比较慢,因为dataGridView1_CellFormatting事件发生太频繁,导致一直在加裁图片。

以下为完整代码:

 

 

代码

 

 

 方法二  通过ToolStripDropDown(http://msdn.microsoft.com/zh-cn/library/system.windows.forms.toolstripdropdown_methods.aspx)实现.

ToolStripLayoutStyle 值:

   1Table

   2 Flow

   3 StackWithOverflow

   4 HorizontalStackWithOverflow 

   5 VerticalStackWithOverflow

如果 LayoutStyle 属性设置为 FlowTable,将不会显示大小调整手柄。

这里设置emotionDropDown.LayoutStyle = ToolStripLayoutStyle.Table;//设置布局.

 

主要实现代码为

private ToolStripDropDown emotionDropDown = new ToolStripDropDown();

 

代码
 1 private void UCChatForm_Load(object sender, EventArgs e)
 2         {
 3             lock (richtxtChat.Emotions)
 4             {
 5                 richtxtChat.Emotions[":)"= Properties.Resources.face01;//微笑face01
 6                 richtxtChat.Emotions[":D"= Properties.Resources.face02;//大笑face02
 7                 richtxtChat.Emotions[":-o"= Properties.Resources.face03;//惊讶face03
 8                 richtxtChat.Emotions[":P"= Properties.Resources.face04;//吐舌笑脸face04
 9                 richtxtChat.Emotions["(H)"= Properties.Resources.face05;//热烈的笑脸face05
10                 richtxtChat.Emotions[":@"= Properties.Resources.face06;//生气face06
11                 richtxtChat.Emotions[":S"= Properties.Resources.face07;//困惑face07
12                 richtxtChat.Emotions[":$"= Properties.Resources.face08;//尴尬face08
13                 richtxtChat.Emotions[":("= Properties.Resources.face09;//悲伤face09
14                 richtxtChat.Emotions[":'("= Properties.Resources.face10;//哭泣的脸face10
15                 richtxtChat.Emotions[":|"= Properties.Resources.face11;//失望face11
16                 richtxtChat.Emotions["(A)"= Properties.Resources.face12;//天使face12
17                 richtxtChat.Emotions["8o|"= Properties.Resources.face13;//咬牙切齿face13
18                 richtxtChat.Emotions["8-|"= Properties.Resources.face14;//书呆子face14
19                 richtxtChat.Emotions["+o("= Properties.Resources.face15;//生病face15
20                 richtxtChat.Emotions["<:o)"= Properties.Resources.face16;//聚会笑脸face16
21                 richtxtChat.Emotions["|-)"= Properties.Resources.face17;//困了face17
22                 richtxtChat.Emotions["*-)"= Properties.Resources.face18;//正在思考face18
23                 richtxtChat.Emotions[":-*"= Properties.Resources.face19;//悄悄话face19
24                 richtxtChat.Emotions[":-#"= Properties.Resources.face20;//保守秘密face20
25                 richtxtChat.Emotions["^o)"= Properties.Resources.face21;//讽刺face21
26                 richtxtChat.Emotions["8-)"= Properties.Resources.face22;//转动眼睛face22
27                 richtxtChat.Emotions["(L)"= Properties.Resources.face23;//红心face23
28                 richtxtChat.Emotions["(U)"= Properties.Resources.face24;//破碎的心face24
29                 richtxtChat.Emotions["(M)"= Properties.Resources.face25;//Messenger face25
30                 richtxtChat.Emotions["(@)"= Properties.Resources.face26;//猫脸face26
31                 richtxtChat.Emotions["(&)"= Properties.Resources.face27;//狗脸face27
32                 richtxtChat.Emotions["(sn)"= Properties.Resources.face28;//蜗牛face28
33                 richtxtChat.Emotions["(bah)"= Properties.Resources.face29;//黑羊face29
34                 richtxtChat.Emotions["(S)"= Properties.Resources.face30;//沉睡的弯月face30
35                 richtxtChat.Emotions["(*)"= Properties.Resources.face31;//星星face31
36                 richtxtChat.Emotions["(#)"= Properties.Resources.face32;//太阳face32
37                 richtxtChat.Emotions["(R)"= Properties.Resources.face33;//握手face33
38                 richtxtChat.Emotions["({)"= Properties.Resources.face34;//左侧拥抱face34
39                 richtxtChat.Emotions["(})"= Properties.Resources.face35;//右侧拥抱face35
40                 richtxtChat.Emotions["(K)"= Properties.Resources.face36;//红唇face36
41                 richtxtChat.Emotions["(F)"= Properties.Resources.face37;//红玫瑰face37
42                 richtxtChat.Emotions["(W)"= Properties.Resources.face38;//凋谢的玫瑰face38
43                 richtxtChat.Emotions["(O)"= Properties.Resources.face39;//时钟face39
44                 richtxtChat.Emotions["(Y)"= Properties.Resources.face40;//太棒了face40
45                 richtxtChat.Emotions["(N)"= Properties.Resources.face41;//太差了face41
46                 richtxtChat.Emotions["(C)"= Properties.Resources.face42;//咖啡face42
47                 richtxtChat.Emotions["(E)"= Properties.Resources.face43;//电子邮件face43
48                 richtxtChat.Emotions["(li)"= Properties.Resources.face44;//闪电face44
49                 richtxtChat.Emotions["(I)"= Properties.Resources.face45;//灯泡face45
50                 richtxtChat.Emotions["(T)"= Properties.Resources.face46;//电话听筒face46
51                 richtxtChat.Emotions["(8)"= Properties.Resources.face47;//音符face47
52                 c.Emotions["(mp)"= Properties.Resources.face48;//移动电话face48
53                 richtxtChat.Emotions["(^)"= Properties.Resources.face49;//生日蛋糕face49
54                 richtxtChat.Emotions["(G)"= Properties.Resources.face50;//礼品盒face50
55             }
56 
57 
58 
59             emotionDropDown.ImageScalingSize = new Size(1515);//图片大小
60             emotionDropDown.LayoutStyle = ToolStripLayoutStyle.Table;//设置布局
61             foreach (string str in richtxtChat.Emotions.Keys)
62             {
63                 emotionDropDown.Items.Add(null, richtxtChat.Emotions[str], emotion_Click).ToolTipText = GetToolTipText(str);
64             }
65             ((TableLayoutSettings)emotionDropDown.LayoutSettings).ColumnCount = 13;//设置每行显示数目
66         }

 

 

其中richtxtChat为RtfRichTextBox。在这里设置每行显示13个。

显示注释的方法GetToolTipText(str):

 

代码

 

 

 

   

代码
/// <summary>
        
/// 发送表情
        
/// </summary>
        
/// <param name="sender"></param>
        
/// <param name="e"></param>
        private void emotion_Click(object sender, EventArgs e)
        {
            ToolStripItem item 
= (ToolStripItem)sender;
            
if(item==null)
            {
                
return;
            }
            
string text = item.ToolTipText;
            
if (text.Split(' ').Length > 1)
            {
                text 
= text.Split(' ')[1];
            }
            richtxtSend.AppendText(text);
//发送Text
            richtxtSend.Focus();
            SendButton.Enabled 
= true;

        }

 

 

 

 以上是主要代码。RtfRichTextBox 下载