原来是C#的。我转为vb.net了
------------------------------
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2DPublic Class water
Inherits System.Web.UI.Page#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub
Protected WithEvents Image1 As System.Web.UI.WebControls.Image
Protected WithEvents imgtext As System.Web.UI.WebControls.TextBox
Protected WithEvents tw As System.Web.UI.WebControls.DropDownList
Protected WithEvents Button1 As System.Web.UI.WebControls.Button '注意: 以下占位符声明是 Web 窗体设计器所必需的。
'不要删除或移动它。
Private designerPlaceholderDeclaration As System.Object Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
'不要使用代码编辑器修改它。
InitializeComponent()
End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
If Not IsPostBack Then End If
End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Copyright As String
If imgtext.Text <> "" Then
Copyright = imgtext.Text
Else
Copyright = "myx--" & Date.Now.ToString
End If 'create a image object containing the photograph to water
Dim imgPhoto As Image = Image.FromFile(Server.MapPath("water_photo.jpg"))
Dim phWidth As Integer = imgPhoto.Width
Dim phHeight As Integer = imgPhoto.Height 'create a Bitmap the Size of the original photograph
Dim bmPhoto As Bitmap = New Bitmap(phWidth, phHeight, PixelFormat.Format24bppRgb)
bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution) 'load the Bitmap into a Graphics object
Dim grPhoto As Graphics = Graphics.FromImage(bmPhoto) 'create a image object containing the water
Dim imgWater As Image = New Bitmap(Server.MapPath("water.bmp"))
Dim wmWidth As Integer = imgWater.Width
Dim wmHeight As Integer = imgWater.Height '------------------------------------------------------------
'Step #1 - Insert Copyright message
'------------------------------------------------------------ 'Set the rendering quality for this Graphics object
grPhoto.SmoothingMode = SmoothingMode.AntiAlias 'Draws the photo Image object at original size to the graphics object.
grPhoto.DrawImage(imgPhoto, New Rectangle(0, 0, phWidth, phHeight), 0, 0, phWidth, phHeight, GraphicsUnit.Pixel)
'// Photo Image object
'// Rectangle structure
'// x-coordinate of the portion of the source image to draw.
'// y-coordinate of the portion of the source image to draw.
' // Width of the portion of the source image to draw.
'// Height of the portion of the source image to draw.
'// Units of measure
'//-------------------------------------------------------
'//to maximize the size of the Copyright message we will
'//test multiple Font sizes to determine the largest posible
'//font we can use for the width of the Photograph
'//define an array of point sizes you would like to consider as possiblities
'//-------------------------------------------------------
Dim sizes() As Integer = {16, 14, 12, 10, 8, 6, 4} Dim crFont As Font = Nothing
Dim crSize As New SizeF 'Loop through the defined sizes checking the length of the Copyright string
'If its length in pixles is less then the image width choose this Font size.
Dim i As Integer
For i = 0 To 6
'set a Font object to Arial (i)pt, Bold
crFont = New Font("arial", sizes(i), FontStyle.Bold)
'Measure the Copyright string in this Font
crSize = grPhoto.MeasureString(Copyright, crFont) If CType(crSize.Width, System.Double) < CType(phWidth, System.Double) Then
'ToDo: Unsigned Integers not supported
'ToDo: Unsigned Integers not supported
Exit For
End If
Next i 'Since all photographs will have varying heights, determine a
'position 5% from the bottom of the image
Dim yPixlesFromBottom As Integer = CInt(phHeight * 0.95) '0.05 '--------这里改变上下位置 'Now that we have a point size use the Copyrights string height
'to determine a y-coordinate to draw the string of the photograph
Dim yPosFromBottom As Single = phHeight - yPixlesFromBottom - crSize.Height / 2 'Determine its x-coordinate by calculating the center of the width of the image
Dim xCenterOfImg As Single = phWidth * 0.25 ' / 2---------这里改变左右位置 'Define the text layout by setting the text alignment to centered
Dim StrFormat As New StringFormat
StrFormat.Alignment = StringAlignment.Center 'define a Brush which is semi trasparent black (Alpha set to 153)
Dim semiTransBrush2 As New SolidBrush(Color.FromArgb(153, 0, 0, 0)) 'Draw the Copyright string
grPhoto.DrawString(Copyright, crFont, semiTransBrush2, New PointF(xCenterOfImg + 1, yPosFromBottom + 1), StrFormat) 'string of text
'font
'Brush
'Position 'define a Brush which is semi trasparent white (Alpha set to 153)
Dim semiTransBrush As New SolidBrush(Color.FromArgb(153, 255, 255, 255)) 'Draw the Copyright string a second time to create a shadow effect
'Make sure to move this text 1 pixel to the right and down 1 pixel
grPhoto.DrawString(Copyright, crFont, semiTransBrush, New PointF(xCenterOfImg, yPosFromBottom), StrFormat) 'string of text
'font
'Brush
'Position
'Text alignment
------------------------------
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2DPublic Class water
Inherits System.Web.UI.Page#Region " Web 窗体设计器生成的代码 " '该调用是 Web 窗体设计器所必需的。
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() End Sub
Protected WithEvents Image1 As System.Web.UI.WebControls.Image
Protected WithEvents imgtext As System.Web.UI.WebControls.TextBox
Protected WithEvents tw As System.Web.UI.WebControls.DropDownList
Protected WithEvents Button1 As System.Web.UI.WebControls.Button '注意: 以下占位符声明是 Web 窗体设计器所必需的。
'不要删除或移动它。
Private designerPlaceholderDeclaration As System.Object Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
'CODEGEN: 此方法调用是 Web 窗体设计器所必需的
'不要使用代码编辑器修改它。
InitializeComponent()
End Sub#End Region Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'在此处放置初始化页的用户代码
If Not IsPostBack Then End If
End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Copyright As String
If imgtext.Text <> "" Then
Copyright = imgtext.Text
Else
Copyright = "myx--" & Date.Now.ToString
End If 'create a image object containing the photograph to water
Dim imgPhoto As Image = Image.FromFile(Server.MapPath("water_photo.jpg"))
Dim phWidth As Integer = imgPhoto.Width
Dim phHeight As Integer = imgPhoto.Height 'create a Bitmap the Size of the original photograph
Dim bmPhoto As Bitmap = New Bitmap(phWidth, phHeight, PixelFormat.Format24bppRgb)
bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution) 'load the Bitmap into a Graphics object
Dim grPhoto As Graphics = Graphics.FromImage(bmPhoto) 'create a image object containing the water
Dim imgWater As Image = New Bitmap(Server.MapPath("water.bmp"))
Dim wmWidth As Integer = imgWater.Width
Dim wmHeight As Integer = imgWater.Height '------------------------------------------------------------
'Step #1 - Insert Copyright message
'------------------------------------------------------------ 'Set the rendering quality for this Graphics object
grPhoto.SmoothingMode = SmoothingMode.AntiAlias 'Draws the photo Image object at original size to the graphics object.
grPhoto.DrawImage(imgPhoto, New Rectangle(0, 0, phWidth, phHeight), 0, 0, phWidth, phHeight, GraphicsUnit.Pixel)
'// Photo Image object
'// Rectangle structure
'// x-coordinate of the portion of the source image to draw.
'// y-coordinate of the portion of the source image to draw.
' // Width of the portion of the source image to draw.
'// Height of the portion of the source image to draw.
'// Units of measure
'//-------------------------------------------------------
'//to maximize the size of the Copyright message we will
'//test multiple Font sizes to determine the largest posible
'//font we can use for the width of the Photograph
'//define an array of point sizes you would like to consider as possiblities
'//-------------------------------------------------------
Dim sizes() As Integer = {16, 14, 12, 10, 8, 6, 4} Dim crFont As Font = Nothing
Dim crSize As New SizeF 'Loop through the defined sizes checking the length of the Copyright string
'If its length in pixles is less then the image width choose this Font size.
Dim i As Integer
For i = 0 To 6
'set a Font object to Arial (i)pt, Bold
crFont = New Font("arial", sizes(i), FontStyle.Bold)
'Measure the Copyright string in this Font
crSize = grPhoto.MeasureString(Copyright, crFont) If CType(crSize.Width, System.Double) < CType(phWidth, System.Double) Then
'ToDo: Unsigned Integers not supported
'ToDo: Unsigned Integers not supported
Exit For
End If
Next i 'Since all photographs will have varying heights, determine a
'position 5% from the bottom of the image
Dim yPixlesFromBottom As Integer = CInt(phHeight * 0.95) '0.05 '--------这里改变上下位置 'Now that we have a point size use the Copyrights string height
'to determine a y-coordinate to draw the string of the photograph
Dim yPosFromBottom As Single = phHeight - yPixlesFromBottom - crSize.Height / 2 'Determine its x-coordinate by calculating the center of the width of the image
Dim xCenterOfImg As Single = phWidth * 0.25 ' / 2---------这里改变左右位置 'Define the text layout by setting the text alignment to centered
Dim StrFormat As New StringFormat
StrFormat.Alignment = StringAlignment.Center 'define a Brush which is semi trasparent black (Alpha set to 153)
Dim semiTransBrush2 As New SolidBrush(Color.FromArgb(153, 0, 0, 0)) 'Draw the Copyright string
grPhoto.DrawString(Copyright, crFont, semiTransBrush2, New PointF(xCenterOfImg + 1, yPosFromBottom + 1), StrFormat) 'string of text
'font
'Brush
'Position 'define a Brush which is semi trasparent white (Alpha set to 153)
Dim semiTransBrush As New SolidBrush(Color.FromArgb(153, 255, 255, 255)) 'Draw the Copyright string a second time to create a shadow effect
'Make sure to move this text 1 pixel to the right and down 1 pixel
grPhoto.DrawString(Copyright, crFont, semiTransBrush, New PointF(xCenterOfImg, yPosFromBottom), StrFormat) 'string of text
'font
'Brush
'Position
'Text alignment
解决方案 »
- 关于session 应用的示例代码
- asp和asp.net如何在一个网站上共用一个cookie?
- 现在流行的网页游戏,一般前台都是FLASH支持着,那这种网站时用什么写的?
- 初学ASP.net看哪本书比较好?
- 高手过来看看为什么这句会错啊?
- 请问如何使用javascript动态添加checkboxlist中选项
- 求教:DataGrid中如何添加一新行
- 急急 打开昨天运行的项目出现:Visual Studio .NET 已检测到指定的Web服务器运行的不是ASP.NET 1.1版。您将无法运行ASP.NET Web应用
- 请教高手!鼠标放在连接上可以显示层内 文字信息,但为什么显示不了有图片的图文信息..
- 我如何能得到客户端的IP?
- 一个很有挑战性的问题~!GDI发生一般性错误。
- 帮助:水晶报表10的打印,提示:服务器错误...
'Step #2 - Insert Water image
'------------------------------------------------------------
'Create a Bitmap based on the previously modified photograph Bitmap
Dim bmWater As New Bitmap(bmPhoto)
bmWater.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution)
'Load this Bitmap into a new Graphic Object
Dim grWater As Graphics = Graphics.FromImage(bmWater) 'To achieve a transulcent water we will apply (2) color
'manipulations by defineing a ImageAttributes object and
'seting (2) of its properties.
Dim imageAttributes As New ImageAttributes 'The first step in manipulating the water image is to replace
'the background color with one that is trasparent (Alpha=0, R=0, G=0, B=0)
'to do this we will use a Colormap and use this to define a RemapTable
'Dim colorMap As New ColorMap Dim myColorMap(0) As ColorMap
myColorMap(0) = New ColorMap 'My water was defined with a background of 100% Green this will
'be the color we search for and replace with transparency
myColorMap(0).OldColor = Color.FromArgb(255, 0, 255, 0)
myColorMap(0).NewColor = Color.FromArgb(0, 0, 0, 0) Dim remapTable As ColorMap() = myColorMap imageAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap) 'The second color manipulation is used to change the opacity of the
'water. This is done by applying a 5x5 matrix that contains the
'coordinates for the RGBA space. By setting the 3rd row and 3rd column
'to 0.3f we achive a level of opacity
Dim colorMatrixElements As Single()() = {New Single() {1.0F, 0.0F, 0.0F, 0.0F, 0.0F}, New Single() {0.0F, 1.0F, 0.0F, 0.0F, 0.0F}, New Single() {0.0F, 0.0F, 1.0F, 0.0F, 0.0F}, New Single() {0.0F, 0.0F, 0.0F, 0.3F, 0.0F}, New Single() {0.0F, 0.0F, 0.0F, 0.0F, 1.0F}}
Dim wmColorMatrix As New ColorMatrix(colorMatrixElements) imageAttributes.SetColorMatrix(wmColorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap) 'For this example we will place the water in the upper right
'hand corner of the photograph. offset down 10 pixels and to the
'left 10 pixles
Dim xPosOfWm As Integer = (phWidth - wmWidth) * 0.25 'phWidth - wmWidth - 10
Dim yPosOfWm As Integer = (phHeight - wmHeight) * 0.85 '10 grWater.DrawImage(imgWater, New Rectangle(xPosOfWm, yPosOfWm, wmWidth, wmHeight), 0, 0, wmWidth, wmHeight, GraphicsUnit.Pixel, imageAttributes)
'Set the detination Position
' x-coordinate of the portion of the source image to draw.
' y-coordinate of the portion of the source image to draw.
' Water Width
' Water Height
' Unit of measurment
'ImageAttributes Object
'Replace the original photgraphs bitmap with the new Bitmap
imgPhoto = bmWater
grPhoto.Dispose()
grWater.Dispose() 'save new image to file system.
imgPhoto.Save(Server.MapPath("water.aspx").Replace("water.aspx", "") & "water_final.jpg", ImageFormat.Jpeg)
imgPhoto.Dispose()
imgWater.Dispose()
Image1.ImageUrl = "water_final.jpg"
Response.Write(Server.MapPath("water.aspx")) End Sub
End Class
邮件:[email protected]