d:\wwwroot\wuchunhua\sendmail\inc\VerifyCode.asp
001:
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<%
002:
Option Explicit
003:
'Session.CodePage = 65001
004:
'Response.Charset = "UTF-8"
005:
Response.Expires = -1
006:
Response.AddHeader "Pragma", "no-cache"
007:
Response.AddHeader "cache-ctrol", "no-cache"
008:
009:
010:
Dim VC, Code
011:
Randomize
012:
Set VC = New NetRube_VerifyCode
013:
With VC
014:
Code = Int(Rnd * 9000 + 1000)
015:
Session("CheckCode") = ""&Code
016:
.BGroundColor = "#F6FBFF" ' 图片背景颜色
017:
.FGroundColor = "#666666" ' 前景（文本）颜色
018:
.VerifyCode Code, false 'False ' 处理验证码，第二个参数为是否显示彩色文本
019:
.Noises 350, true '添加杂点，第一个参数为杂点数量，第二个参数为是否显示彩色杂点
020:
.Write ' 输出图片
021:
End With
022:
Set VC = Nothing
023:
024:
025:
Class NetRube_VerifyCode
026:
Public GlobalColorTable(), LocalColorTable()
027:
Public TransparentColorIndex, UseTransparency
028:
Public GIF89a
029:
Public Comment
030:
031:
Private FGroundColorIndex, BGroundColorIndex
032:
Private Image
033:
Private GlobalColorTableSize, GlobalColorTableFlag, LocalColorTableSize, LocalColorTableFlag
034:
Private Width_, Height_
035:
Private LeftPosition, TopPosition
036:
Private Bits, ColorResolution, CodeSize
037:
Private PixelAspectRatio
038:
Private SortFlag, InterlaceFlag
039:
Private Seperator, GraphicControl, EndOfImage
040:
Private Reserved
041:
042:
Private Font
043:
Private Letter(19)
044:
045:
Private Sub Class_Initialize()
046:
Image = ""
047:
048:
GIF89a = False
049:
050:
ReDim GlobalColorTable(256)
051:
GlobalColorTableSize = 7
052:
GlobalColorTableFlag = True
053:
054:
GlobalColorTable(2) = RGB(255, 0, 0)
055:
GlobalColorTable(3) = RGB(0, 255, 0)
056:
GlobalColorTable(4) = RGB(0, 0, 255)
057:
GlobalColorTable(5) = RGB(255, 255, 0)
058:
GlobalColorTable(6) = RGB(0, 255, 255)
059:
GlobalColorTable(7) = RGB(255, 0, 255)
060:
061:
ReDim LocalColorTable(0)
062:
LocalColorTableSize = 0
063:
LocalColorTableFlag = False
064:
065:
ColorResolution = 7
066:
Bits = 7
067:
CodeSize = 7
068:
069:
BGroundColorIndex = 0
070:
FGroundColorIndex = 1
071:
TransparentColorIndex = 0
072:
UseTransparency = False
073:
074:
LeftPosition = 0
075:
TopPosition = 0
076:
Width_ = 20
077:
Height_ = 20
078:
079:
Clear
080:
081:
PixelAspectRatio = 0
082:
SortFlag = False
083:
InterlaceFlag = False
084:
Seperator = Asc(",")
085:
GraphicControl = Asc("!")
086:
EndOfImage = Asc(";")
087:
088:
Comment = ""
089:
090:
Reserved = 0
091:
092:
Set Font = Server.CreateObject("Scripting.Dictionary")
093:
094:
Letter(0) = "00000000000000"
095:
Letter(1) = "00001111100000"
096:
Letter(2) = "00011111110000"
097:
Letter(3) = "00111000111000"
098:
Letter(4) = "00110000011100"
099:
Letter(5) = "01110000001100"
100:
Letter(6) = "01100000001110"
101:
Letter(7) = "01100000001110"
102:
Letter(8) = "11100000001110"
103:
Letter(9) = "11000000001110"
104:
Letter(10) = "11000000001110"
105:
Letter(11) = "11100000001110"
106:
Letter(12) = "11100000001100"
107:
Letter(13) = "11100000001100"
108:
Letter(14) = "01100000001100"
109:
Letter(15) = "01110000011100"
110:
Letter(15) = "00111000011000"
111:
Letter(16) = "00011111110000"
112:
Letter(17) = "00001111100000"
113:
Letter(18) = "00000000000000"
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Font.Add "0", Letter
115:
116:
Letter(0) = "00000000000000"
117:
Letter(1) = "00000001110000"
118:
Letter(2) = "00000001110000"
119:
Letter(3) = "00000011100000"
120:
Letter(4) = "00000011000000"
121:
Letter(5) = "00000011000000"
122:
Letter(6) = "00000011000000"
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Letter(7) = "00000111000000"
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Letter(8) = "00000111000000"
125:
Letter(9) = "00000111000000"
126:
Letter(10) = "00000110000000"
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Letter(11) = "00000110000000"
128:
Letter(12) = "00000110000000"
129:
Letter(13) = "00000110000000"
130:
Letter(14) = "00000110000000"
131:
Letter(15) = "00000110000000"
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Letter(15) = "00000110000000"
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Letter(16) = "00000110000000"
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Letter(17) = "00000010000000"
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Letter(18) = "00000000000000"
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Font.Add "1", Letter
137:
138:
Letter(0) = "00000000000000"
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Letter(1) = "00001111110000"
140:
Letter(2) = "00011111111000"
141:
Letter(3) = "00111000011100"
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Letter(4) = "01110000011100"
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Letter(5) = "01110000011000"
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Letter(6) = "01100000011000"
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Letter(7) = "00000000111000"
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Letter(8) = "00000001110000"
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Letter(9) = "00000001110000"
148:
Letter(10) = "00000011000000"
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Letter(11) = "00000111000000"
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Letter(12) = "00001110000000"
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Letter(13) = "00011000000000"
152:
Letter(14) = "00011000000000"
153:
Letter(15) = "00110000011100"
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Letter(16) = "01101111111100"
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Letter(17) = "01111111111110"
156:
Letter(18) = "01111100000000"
157:
Letter(19) = "00000000000000"
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Font.Add "2", Letter
159:
160:
Letter(0) = "00000000000000"
161:
Letter(1) = "00001111111000"
162:
Letter(2) = "00111111111000"
163:
Letter(3) = "01110000111100"
164:
Letter(4) = "01100000011000"
165:
Letter(5) = "01000000111000"
166:
Letter(6) = "00000000111000"
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Letter(7) = "00000001110000"
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Letter(8) = "00000011000000"
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Letter(9) = "00000111110000"
170:
Letter(10) = "00000100111000"
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Letter(11) = "00000000011100"
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Letter(12) = "00000000011100"
173:
Letter(13) = "00000000011100"
174:
Letter(14) = "00000000011100"
175:
Letter(15) = "00000000011000"
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Letter(16) = "11100000111000"
177:
Letter(17) = "11111111110000"
178:
Letter(18) = "01111111100000"
179:
Letter(19) = "00000000000000"
180:
Font.Add "3", Letter
181:
182:
Letter(0) = "00000000000000"
183:
Letter(1) = "00000000111000"
184:
Letter(2) = "00000001111000"
185:
Letter(3) = "00000011100000"
186:
Letter(4) = "00000111011100"
187:
Letter(5) = "00001110011100"
188:
Letter(6) = "00001100011000"
189:
Letter(7) = "00011000111000"
190:
Letter(8) = "00111000110000"
191:
Letter(9) = "01110000110000"
192:
Letter(10) = "01100000110000"
193:
Letter(11) = "01100000110000"
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Letter(12) = "11000111111110"
195:
Letter(13) = "11111111111100"
196:
Letter(14) = "11111111100000"
197:
Letter(15) = "11100001100000"
198:
Letter(16) = "00000001110000"
199:
Letter(17) = "00000000110000"
200:
Letter(18) = "00000000110000"
201:
Letter(19) = "00000000100000"
202:
Font.Add "4", Letter
203:
204:
Letter(0) = "00000000000000"
205:
Letter(1) = "00001100000100"
206:
Letter(2) = "00011111111110"
207:
Letter(3) = "00011111111100"
208:
Letter(4) = "00011110000000"
209:
Letter(5) = "00011000000000"
210:
Letter(6) = "00111000000000"
211:
Letter(7) = "00111000000000"
212:
Letter(8) = "00111111110000"
213:
Letter(9) = "00111111111000"
214:
Letter(10) = "00000000011000"
215:
Letter(11) = "00000000011000"
216:
Letter(12) = "00000000011000"
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Letter(13) = "00000000011000"
218:
Letter(14) = "00000000011000"
219:
Letter(15) = "00000000011000"
220:
Letter(16) = "00000001111000"
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Letter(17) = "01111111110000"
222:
Letter(18) = "00111111000000"
223:
Letter(19) = "00000000100000"
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Font.Add "5", Letter
225:
226:
Letter(0) = "00000000000000"
227:
Letter(1) = "00000011110000"
228:
Letter(2) = "00000111100000"
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Letter(3) = "00001110000000"
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Letter(4) = "00011100000000"
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Letter(5) = "00111000000000"
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Letter(6) = "00110000000000"
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Letter(7) = "00110000000000"
234:
Letter(8) = "01111111110000"
235:
Letter(9) = "01111111111000"
236:
Letter(10) = "01110000011100"
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Letter(11) = "01100000001100"
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Letter(12) = "01100000001100"
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Letter(13) = "01100000001100"
240:
Letter(14) = "01100000001100"
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Letter(15) = "01110000011100"
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Letter(16) = "00110000011100"
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Letter(17) = "00111111111000"
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Letter(18) = "00011111110000"
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Letter(19) = "00000000000000"
246:
Font.Add "6", Letter
247:
248:
Letter(0) = "00000000000000"
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Letter(1) = "00100111111110"
250:
Letter(2) = "01111111111100"
251:
Letter(3) = "01111110011100"
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Letter(4) = "00000000011000"
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Letter(5) = "00000000111000"
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Letter(6) = "00000000110000"
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Letter(7) = "00000000110000"
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Letter(8) = "00000000110000"
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Letter(9) = "00000001110000"
258:
Letter(10) = "00000001100000"
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Letter(11) = "00000001100000"
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Letter(12) = "00000001100000"
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Letter(13) = "00000001100000"
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Letter(14) = "00000011100000"
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Letter(15) = "00000011100000"
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Letter(16) = "00000011100000"
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Letter(17) = "00000001000000"
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Letter(18) = "00000001000000"
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Letter(19) = "00000000000000"
268:
Font.Add "7", Letter
269:
270:
Letter(0) = "00000000000000"
271:
Letter(1) = "00001111110000"
272:
Letter(2) = "00011111111000"
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Letter(3) = "00111000011000"
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Letter(4) = "00110000011000"
275:
Letter(5) = "01110000011100"
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Letter(6) = "01110000011000"
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Letter(7) = "00110000011000"
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Letter(8) = "00111101111000"
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Letter(9) = "00011111111000"
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Letter(10) = "00111000111100"
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Letter(11) = "01110000001100"
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Letter(12) = "01110000001100"
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Letter(13) = "01100000001110"
284:
Letter(14) = "01100000001100"
285:
Letter(15) = "01100000001100"
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Letter(16) = "01110000011100"
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Letter(17) = "00111111111100"
288:
Letter(18) = "00011111110000"
289:
Letter(19) = "00000000000000"
290:
Font.Add "8", Letter
291:
292:
Letter(0) = "00000000000000"
293:
Letter(1) = "00011111110000"
294:
Letter(2) = "00111111111000"
295:
Letter(3) = "01110000111000"
296:
Letter(4) = "01110000011100"
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Letter(5) = "01100000001100"
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Letter(6) = "01100000001100"
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Letter(7) = "01100000001100"
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Letter(8) = "01100000001100"
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Letter(9) = "01110000011100"
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Letter(10) = "00111111111100"
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Letter(11) = "00011111111100"
304:
Letter(12) = "00000000011000"
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Letter(13) = "00000000011000"
306:
Letter(14) = "00000000111000"
307:
Letter(15) = "00000001110000"
308:
Letter(16) = "00000011100000"
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Letter(17) = "00000111000000"
310:
Letter(18) = "00011110000000"
311:
Letter(19) = "00000000000000"
312:
Font.Add "9", Letter
313:
End Sub
314:
315:
Private Sub Class_Terminate()
316:
Font.RemoveAll
317:
Set Font = Nothing
318:
End Sub
319:
320:
Public Property Get Width()
321:
Width = Width_
322:
End Property
323:
324:
Public Property Get Height()
325:
Height = Height_
326:
End Property
327:
328:
Public Property Get Version()
329:
Version = "NetRube VerifyCode Class 1.0 Build 20041225"
330:
End Property
331:
332:
Public Property Let BGroundColor(ByVal Color)
333:
GlobalColorTable(0) = MakeColor(Color)
334:
BGroundColorIndex = 0
335:
End Property
336:
337:
Public Property Let FGroundColor(ByVal Color)
338:
GlobalColorTable(1) = MakeColor(Color)
339:
FGroundColorIndex = 1
340:
End Property
341:
342:
Public Property Get Pixel(ByVal PX, ByVal PY)
343:
If (PX > 0 And PX <= Width_) And (PY > 0 And PY <= Height_) Then
344:
Pixel = AscB(MidB(Image, (Width_ * (PY - 1)) + PX, 1))
345:
Else
346:
Pixel = 0
347:
End If
348:
End Property
349:
350:
Public Property Let Pixel(ByVal PX, ByVal PY, PValue)
351:
Dim Offset
352:
353:
PX = Int(PX)
354:
PY = Int(PY)
355:
PValue = Int(PValue)
356:
357:
Offset = Width_ * (PY - 1)
358:
359:
If (PX > 0 And PX <= Width_) And (PY > 0 And PY <= Height_) Then
360:
Image = LeftB(Image, Offset + (PX - 1)) & ChrB(PValue) & RightB(Image, LenB(Image) - (Offset + PX))
361:
End If
362:
End Property
363:
364:
Public Sub Clear()
365:
Image = String(Width_ * (Height_ + 1) / 2, ChrB(BGroundColorIndex) & ChrB(BGroundColorIndex))
366:
End Sub
367:
368:
Public Sub Resize(ByVal NewWidth, ByVal NewHeight, RPreserve)
369:
Dim OldImage, OldWidth, OldHeight
370:
Dim CopyWidth, CopyHeight
371:
Dim X, Y
372:
373:
If RPreserve Then
374:
OldImage = Image
375:
OldWidth = Width_
376:
OldHeight = Height_
377:
End If
378:
379:
Width_ = NewWidth
380:
Height_ = NewHeight
381:
382:
Clear
383:
384:
If RPreserve Then
385:
If NewWidth > OldWidth Then CopyWidth = OldWidth Else CopyWidth = NewWidth
386:
If NewHeight > OldHeight Then CopyHeight = OldHeight Else CopyHeight = NewHeight
387:
388:
Width_ = NewWidth
389:
Height_ = NewHeight
390:
391:
For Y = 1 To CopyHeight
392:
For X = 1 To CopyWidth
393:
Pixel(X, Y) = AscB(MidB(OldImage, (OldWidth * (Y - 1)) + X, 1))
394:
Next
395:
Next
396:
End If
397:
End Sub
398:
399:
Private Function ShiftLeft(SLValue, SLBits)
400:
ShiftLeft = SLValue * (2 ^ SLBits)
401:
End Function
402:
403:
Private Function ShiftRight(SRValue, SRBits)
404:
ShiftRight = Int(SRValue / (2 ^ SRBits))
405:
End Function
406:
407:
Private Function Low(LValue)
408:
Low = LValue And &HFF
409:
End Function
410:
411:
Private Function High(HValue)
412:
High = ShiftRight(HValue, 8)
413:
End Function
414:
415:
Private Function Blue(BValue)
416:
Blue = Low(ShiftRight(BValue, 16))
417:
End Function
418:
419:
Private Function Green(GValue)
420:
Green = Low(ShiftRight(GValue, 8))
421:
End Function
422:
423:
Private Function Red(RValue)
424:
Red = Low(RValue)
425:
End Function
426:
427:
Private Function MakeColor(MCValue)
428:
MakeColor = CLng("&H" & Right(MCValue, 2) & Mid(MCValue, 4, 2) & Mid(MCValue, 2, 2))
429:
End Function
430:
431:
Private Function GetWord(GWValue)
432:
GetWord = ShiftLeft(AscB(RightB(GWValue, 1)), 8) Or AscB(LeftB(GWValue, 1))
433:
End Function
434:
435:
Private Function MakeWord(MWValue)
436:
MakeWord = ChrB(Low(MWValue)) & ChrB(High(MWValue))
437:
End Function
438:
439:
Private Function MakeByte(MBValue)
440:
MakeByte = ChrB(Low(MBValue))
441:
End Function
442:
443:
Private Function UncompressedData()
444:
Dim ClearCode, ChunkMax, EndOfStream
445:
Dim UDData, UD, U
446:
447:
UncompressedData = ""
448:
449:
ClearCode = 2 ^ Bits
450:
ChunkMax = 2 ^ Bits - 2
451:
EndOfStream = ClearCode + 1
452:
453:
UDData = ""
454:
455:
For U = 1 To LenB(Image) Step ChunkMax
456:
UDData = UDData & MidB(Image, U, ChunkMax) & ChrB(ClearCode)
457:
Next
458:
459:
For U = 1 To LenB(UDData) Step &HFF
460:
UD = MidB(UDData, U, &HFF)
461:
UncompressedData = UncompressedData & MakeByte(LenB(UD)) & UD
462:
Next
463:
464:
UncompressedData = UncompressedData & MakeByte(&H00)
465:
UncompressedData = UncompressedData & MakeByte(EndOfStream)
466:
End Function
467:
468:
Private Function GetGColorTable()
469:
Dim GGCT
470:
471:
GetGColorTable = ""
472:
473:
For GGCT = 0 To UBound(GlobalColorTable) - 1
474:
GetGColorTable = GetGColorTable & MakeByte(Red(GlobalColorTable(GGCT)))
475:
GetGColorTable = GetGColorTable & MakeByte(Green(GlobalColorTable(GGCT)))
476:
GetGColorTable = GetGColorTable & MakeByte(Blue(GlobalColorTable(GGCT)))
477:
Next
478:
End Function
479:
480:
Private Function GetLColorTable()
481:
Dim GLCT
482:
483:
GetLColorTable = ""
484:
485:
For GLCT = 0 To UBound(LocalColorTable) - 1
486:
GetLColorTable = GetLColorTable & MakeByte(Red(LocalColorTable(GLCT)))
487:
GetLColorTable = GetLColorTable & MakeByte(Green(LocalColorTable(GLCT)))
488:
GetLColorTable = GetLColorTable & MakeByte(Blue(LocalColorTable(GLCT)))
489:
Next
490:
End Function
491:
492:
Private Function GlobalDescriptor()
493:
GlobalDescriptor = 0
494:
495:
If GlobalColorTableFlag Then GlobalDescriptor = GlobalDescriptor Or ShiftLeft(1, 7)
496:
GlobalDescriptor = GlobalDescriptor Or ShiftLeft(ColorResolution, 7)
497:
If SortFlag Then GlobalDescriptor = GlobalDescriptor Or ShiftLeft(1, 3)
498:
GlobalDescriptor = GlobalDescriptor Or GlobalColorTableSize
499:
End Function
500:
501:
Private Function LocalDescriptor()
502:
LocalDescriptor = 0
503:
504:
If LocalColorTableFlag Then LocalDescriptor = LocalDescriptor Or ShiftLeft(1, 7)
505:
If InterlaceFlag Then LocalDescriptor = LocalDescriptor Or ShiftLeft(1, 6)
506:
If SortFlag Then LocalDescriptor = LocallDescriptor Or ShiftLeft(1, 5)
507:
LocalDescriptor = LocalDescriptor Or ShiftLeft(Reserved, 3)
508:
LocalDescriptor = LocalDescriptor Or LocalColorTableSize
509:
End Function
510:
511:
Private Property Get ImageData()
512:
Dim Text, I
513:
514:
ImageData = GIFHeader
515:
ImageData = ImageData & MakeWord(Width_)
516:
ImageData = ImageData & MakeWord(Height_)
517:
ImageData = ImageData & MakeByte(GlobalDescriptor)
518:
ImageData = ImageData & MakeByte(BGroundColorIndex)
519:
ImageData = ImageData & MakeByte(PixelAspectRatio)
520:
ImageData = ImageData & GetGColorTable
521:
522:
If GIF89a Then
523:
If UseTransparency Then
524:
ImageData = ImageData & MakeByte(GraphicControl)
525:
ImageData = ImageData & MakeByte(&HF9)
526:
ImageData = ImageData & MakeByte(&H04)
527:
ImageData = ImageData & MakeByte(&H01)
528:
ImageData = ImageData & MakeByte(&H00)
529:
ImageData = ImageData & MakeByte(TransparentColorIndex)
530:
ImageData = ImageData & MakeByte(&H00)
531:
End If
532:
533:
If Comment <> "" Then
534:
ImageData = ImageData & MakeByte(GraphicControl)
535:
ImageData = ImageData & MakeByte(&HFE)
536:
Text = Left(Comment, &HFF)
537:
ImageData = ImageData & MakeByte(Len(Text))
538:
For I = 1 To Len(Text)
539:
ImageData = ImageData & MakeByte(Asc(Mid(Text, I, 1)))
540:
Next
541:
ImageData = ImageData & MakeByte(&H00)
542:
End If
543:
End If
544:
545:
ImageData = ImageData & MakeByte(Seperator)
546:
ImageData = ImageData & MakeWord(LeftPosition)
547:
ImageData = ImageData & MakeWord(TopPosition)
548:
ImageData = ImageData & MakeWord(Width_)
549:
ImageData = ImageData & MakeWord(Height_)
550:
ImageData = ImageData & MakeByte(LocalDescriptor)
551:
ImageData = ImageData & MakeByte(CodeSize)
552:
ImageData = ImageData & UncompressedData
553:
ImageData = ImageData & MakeByte(&H00)
554:
ImageData = ImageData & MakeByte(EndOfImage)
555:
End Property
556:
557:
Public Sub Write()
558:
Response.ContentType = "image/gif"
559:
Response.BinaryWrite ImageData
560:
End Sub
561:
562:
Private Function GIFHeader()
563:
GIFHeader = ""
564:
GIFHeader = GIFHeader & ChrB(Asc("G"))
565:
GIFHeader = GIFHeader & ChrB(Asc("I"))
566:
GIFHeader = GIFHeader & ChrB(Asc("F"))
567:
GIFHeader = GIFHeader & ChrB(Asc("8"))
568:
If GIF89a Then GIFHeader = GIFHeader & ChrB(Asc("9")) Else GIFHeader = GIFHeader & ChrB(Asc("7")) End If
569:
GIFHeader = GIFHeader & ChrB(Asc("a"))
570:
End Function
571:
572:
Public Sub VerifyCode(Text, VCColor)
573:
Dim I1, I2, I3
574:
Dim VCX, VCY, VCIndex
575:
576:
Resize 14 * Len(Text) + 10, UBound(Letter) + 10, False
577:
578:
Randomize
579:
VCX = Int(Rnd * 10)
580:
VCY = Int(Rnd * (Height_ - UBound(Letter)))
581:
582:
For I1 = 0 To UBound(Letter) - 1
583:
For I2 = 1 To Len(Text)
584:
For I3 = 1 To Len(Font(Mid(Text, I2, 1))(I1))
585:
VCIndex = CLng(Mid(Font(Mid(Text, I2, 1))(I1), I3, 1))
586:
587:
If VCIndex <> 0 Then
588:
If VCColor Then
589:
Randomize
590:
VCIndex = Int(Rnd * 7)
591:
End If
592:
593:
Pixel(VCX + ((I2 - 1) * Len(Letter(0))) + I3, VCY + I1) = VCIndex
594:
End If
595:
Next
596:
Next
597:
Next
598:
End Sub
599:
600:
Public Sub Noises(Amount, NColor)
601:
Dim NI, NIndex
602:
603:
For NI = 1 To Amount
604:
NIndex = 1
605:
606:
If NColor Then
607:
Randomize
608:
NIndex = Int(Rnd * 7)
609:
End If
610:
611:
Pixel(Int(Rnd * Width_), Int(Rnd * Height_)) = NIndex
612:
Next
613:
End Sub
614:
End Class
615:
%
>
616:
617:
618: