today:
109
yesterday:
242
Total:
1,004,267

General How-To Document / Change a Logo in a Page Template

admin 2016.04.16 15:55 Views : 226

How-To Document

Change a Logo in a Page Template

Date: 28-Oct-2003

After completing this How-To, you should be able to understand: 

  • Upload an image from your filesystem to Oracle Application Express (formerly called HTML DB) 
  • Use the uploaded image in a page template 
Introduction 
Application Express (formerly called HTML DB) uses template that are fully customizable.  These templates may reference images and cascading style sheets (CSS). Using only a web browser, you can create and modify these HTML based templates to get exactly the look and feel you desire.  In this How To, we will  decribe  how you can modify the template supplied with the sample application to change the logo. 

Software RequirementsUploading an Image 
To upload an image, follow the following steps: 

  • navigate to the Application Builder for your application.
  • click on the Shared Components icon
  • click the Images icon
  • click Create to upload a new image
  • click Browse... to locate an image on your local filesystem
  • make sure you remember the name of the image, for example:  my_logo.gif 

Modifying a page template 

Now that the image is uploaded, it's stored in the database and we can use it in a page template to modify the look and feel of an application.  To reference an image you have uploaded in a page template, follow these steps: 

  • navigate to the Application Builder for your application
  • click on the Shared Components icon
  • click the Templates link
  • click on the name of the page template listed with a checkmark in the Default column, this is the application's default template
  • find the section of html that references the logo in the page template, typically in the Body section of the template (see sample HTML below, with image reference highlighted in red)


Listing 1 - Sample HTML referencing logo in page template, before change 
<table width="100%">
                                      

  <tr>
                                      

    <td style="vertical-align:top;text-align:left;width:170px;padding-left=5px;padding-top=5px;">
                                                                                
        <img src="#IMAGE_PREFIX#oracle_bw.gif" alt="Oracle" />                                         
                                            </td>
                                      

    <td style="vertical-align:top;text-align:right;font-size:10pt;">
                                      

      #NAVIGATION_BAR#&nbsp;
                                      

    </td>
                                      

  </tr>
                                      

</table>
The body section of the page template is currently referencing a default image that ships with HTML DB.   To reference the image we just uploaded, my_logo.gif, we need to change this section of HTML. First, we need to include the substitution string #WORKSPACE_IMAGES# referring to the location of images we uploaded.  Secondly, we need to reference the correct image name, in this case: my_logo.gif.  See sample HTML below. 

Listing 2 - HTML referencing logo in page template, after change 
<table width="100%">
                                      

  <tr>
                                      

    <td style="vertical-align:top;text-align:left;width:170px;padding-left=5px;padding-top=5px;">
                                                                                
        <img src="#WORKSPACE_IMAGES#my_logo.gif" alt="My Logo" />                                         
                                            </td>
                                      

    <td style="vertical-align:top;text-align:right;font-size:10pt;">
                                      

      #NAVIGATION_BAR#&nbsp;
                                      

    </td>
                                      

  </tr>
                                      

</table>
After applying the change to the template, your application should now use a new logo on each page that uses the default page template. 

Additional Resources

Changing the logo in a page template: A viewlet 
Customizing HTML DB Templates: A Technical Whitepaper (PDF) 

Discuss this how-to in the OTN HTML DB Forum.

I want to
Update Delete List
No. Subject Author Date Views
126 YEAR EXPRESSIONS admin 2023.05.25 35
125 TEST admin 2023.05.03 38
124 INNER JOIN admin 2023.05.19 39
123 ORACLE COLLECTION admin 2023.05.08 40
122 Monthly SUM admin 2023.05.22 40
121 DATE -> DAY CONVERT SQL admin 2023.05.25 40
120 TEST admin 2023.04.28 41
119 GRAPH (BAR) SQL SAMPLE admin 2023.05.25 41
118 GitHub.com/Oracle/APEX. admin 2023.05.04 42
117 Global pages admin 2023.05.09 42
116 FINAL TEST admin 2023.05.08 46
115 LOOP TABLE UPDATE admin 2023.05.19 52
114 GP 영수증 (3) -01/04/2023 admin 2023.01.04 53
113 WHDR email address admin 2023.04.13 56
112 CHANGE TABLE NAME admin 2023.05.31 60
111 GP 영수증 본문 admin 2022.11.07 62
110 GP - 영수증 (2) admin 2022.11.07 63
109 Building Mobile Applications with Oracle Application Express 5.0 admin 2017.11.25 67
108 ipconfig admin 2023.06.03 68
107 Manufacturing resource planning (MRP II) admin 2018.02.14 78
Write Tag