1.  2004 Prentice Hall, Inc. All rights reserved. Chapter 15 - Dynamic HTML: Filters and Transitions Outline 15.1 Introduction 15.2 Flip Filters: flipv and fliph 15.3 Transparency with the chroma Filter 15.4 Creating Image mask s 15.5 Miscellaneous Image Filters: invert, gray and xray 15.6 Adding shadow s to Text 15.7 Creating Gradients with alpha 15.8 Making Text glow 15.9 Creating Motion with blur 15.10 Using the wave Filter 15.11 Advanced Filters: dropShadow and light 15.12 blendTrans Transition 15.13 revealTrans Transition

2.  2004 Prentice Hall, Inc. All rights reserved. Objectives In this lesson, you will learn: –To use filters to achieve special effects. –To combine filters to achieve an even greater variety of special effects. –To be able to create animated visual transitions between Web pages. –To be able to modify filters dynamically, using DHTML.

3.  2004 Prentice Hall, Inc. All rights reserved. 15.1 Introduction Filters –Cause changes that are persistent Transitions –Temporary –Allow transfer from one page to another with pleasant visual effect For example, random dissolve

4.  2004 Prentice Hall, Inc. All rights reserved. 15.2 Flip Filters: flipv and fliph flipv and fliph filters mirror text or images vertically and horizontally, respectively

5.  2004 Prentice Hall, Inc. All rights reserved. Outline flip.html (1 of 2)

6.  2004 Prentice Hall, Inc. All rights reserved. Outline flip.html (2 of 2)

7.  2004 Prentice Hall, Inc. All rights reserved. No filters applied flipv filter applied fliph filter applied Both fliph and flipv filters applied

8.  2004 Prentice Hall, Inc. All rights reserved. 15.3 Transparency with the chroma Filter chroma filter applies transparency effects dynamically –Without using a graphics editor to hard-code transparency into the image onchange –Fires when the value of a form changes

9.  2004 Prentice Hall, Inc. All rights reserved. Outline chroma.html (1 of 3)

10.  2004 Prentice Hall, Inc. All rights reserved. Outline chroma.html (2 of 3)

11.  2004 Prentice Hall, Inc. All rights reserved. Outline chroma.html (3 of 3)

12.  2004 Prentice Hall, Inc. All rights reserved. 15.4 Creating Image masks Background is a solid color Foreground is transparent to the image or color behind it

13.  2004 Prentice Hall, Inc. All rights reserved. Outline mask.html (1 of 2)

14.  2004 Prentice Hall, Inc. All rights reserved. Outline mask.html (2 of 2)

15.  2004 Prentice Hall, Inc. All rights reserved. 15.5 Miscellaneous Image Filters: invert, gray and xray invert filter –Negative image effect Dark areas become light and light areas become dark gray filter –Grayscale image effect All color is stripped from the image, only brightness data remains xray filter –X-ray effect Inversion of the grayscale effect

16.  2004 Prentice Hall, Inc. All rights reserved. Outline misc.html (1 of 2)

17.  2004 Prentice Hall, Inc. All rights reserved. Outline misc.html (2 of 2)

18.  2004 Prentice Hall, Inc. All rights reserved.

19. 15.6 Adding shadows to Text shadow filter –Showing effect Three-dimensional appearance

20.  2004 Prentice Hall, Inc. All rights reserved. Outline shadow.html (1 of 2)

21.  2004 Prentice Hall, Inc. All rights reserved. Outline shadow.html (2 of 2)

22.  2004 Prentice Hall, Inc. All rights reserved. 15.7 Creating Gradients with alpha alpha filter –Gradient effect Gradual progression from starting color to target color –style Uniform opacity ( value 0) Linear gradient ( value 1) Circular gradient ( value 2) Rectangular gradient ( value 3)

23.  2004 Prentice Hall, Inc. All rights reserved. Outline alpha.html (1 of 3)

24.  2004 Prentice Hall, Inc. All rights reserved. Outline alpha.html (2 of 3)

25.  2004 Prentice Hall, Inc. All rights reserved. Outline alpha.html (3 of 3)

26.  2004 Prentice Hall, Inc. All rights reserved.

27. 15.8 Making Text glow glow filter adds an aura of color around text

28.  2004 Prentice Hall, Inc. All rights reserved. Outline glow.html (1 of 4)

29.  2004 Prentice Hall, Inc. All rights reserved. Outline glow.html (2 of 4)

30.  2004 Prentice Hall, Inc. All rights reserved. Outline glow.html (3 of 4)

31.  2004 Prentice Hall, Inc. All rights reserved. Outline glow.html (4 of 4)

32.  2004 Prentice Hall, Inc. All rights reserved. 15.9 Creating Motion with blur blur filter creates an illusion of motion by blurring text or images in a certain direction –Add Adds a copy of the original image over the blurred image –Direction Determines in which direction the blur filter is applied –strength Determines how strong the blurring effect is

33.  2004 Prentice Hall, Inc. All rights reserved. Outline blur.html (1 of 5)

34.  2004 Prentice Hall, Inc. All rights reserved. Outline blur.html (2 of 5)

35.  2004 Prentice Hall, Inc. All rights reserved. Outline blur.html (3 of 5)

36.  2004 Prentice Hall, Inc. All rights reserved. Outline blur.html (4 of 5)

37.  2004 Prentice Hall, Inc. All rights reserved. Outline blur.html (5 of 5)

38.  2004 Prentice Hall, Inc. All rights reserved. 15.10 Using the wave Filter wave filter allows user to apply sine-wave distortions to text and images on Web pages –add Adds a copy of the text or image underneath the filtered effect –freq Determines the frequency of the wave applied –phase Indicates the phase shift of the wave

39.  2004 Prentice Hall, Inc. All rights reserved. Outline wave.html (1 of 2)

40.  2004 Prentice Hall, Inc. All rights reserved. Outline wave.html (2 of 2)

41.  2004 Prentice Hall, Inc. All rights reserved.

42. 15.11 Advanced Filters: dropShadow and light dropShadow –Creates a blacked-out version of the image, and places it behind the image –offx and offy properties Determined by how many pixels the drop shadow is offset –color property Specifies the color of the drop shadow light filters –Most powerful and advanced filter in Internet Explorer 6.0 –Allows simulation of a light source shining on Web page –All parameters and methods are set by scripting –addPoint Adds a point light source

43.  2004 Prentice Hall, Inc. All rights reserved. Outline dropshadow.html (1 of 3)

44.  2004 Prentice Hall, Inc. All rights reserved. Outline dropshadow.html (2 of 3)

45.  2004 Prentice Hall, Inc. All rights reserved. Outline dropshadow.html (3 of 3)

46.  2004 Prentice Hall, Inc. All rights reserved. Outline conelight.html (1 of 3)

47.  2004 Prentice Hall, Inc. All rights reserved. Outline conelight.html (2 of 3)

48.  2004 Prentice Hall, Inc. All rights reserved. Outline conelight.html (3 of 3)

49.  2004 Prentice Hall, Inc. All rights reserved. 15.12 blendTrans Transition Example of the blendTrans transition –Creates a smooth fade-in/fade-out effect

50.  2004 Prentice Hall, Inc. All rights reserved. Outline blendtrans.html (1 of 2)

51.  2004 Prentice Hall, Inc. All rights reserved. Outline blendtrans.html (2 of 2)

52.  2004 Prentice Hall, Inc. All rights reserved. Outline blendtrans2.html (1 of 3)

53.  2004 Prentice Hall, Inc. All rights reserved. Outline blendtrans2.html (2 of 3)

54.  2004 Prentice Hall, Inc. All rights reserved. Outline blendtrans2.html (3 of 3)

55.  2004 Prentice Hall, Inc. All rights reserved.

56. 15.13 revealTrans Transition revealTrans filter –Create professional-style transitions –From box out to random dissolve

57.  2004 Prentice Hall, Inc. All rights reserved. Outline revealtrans.html (1 of 4)

58.  2004 Prentice Hall, Inc. All rights reserved. Outline revealtrans.html (2 of 4)

59.  2004 Prentice Hall, Inc. All rights reserved. Outline revealtrans.html (3 of 4)

60.  2004 Prentice Hall, Inc. All rights reserved. Outline revealtrans.html (4 of 4)

61.  2004 Prentice Hall, Inc. All rights reserved.