"Viewport X/Y Position on Canvas" ??????

Viewport X Position on Canvas Viewport Y Position on Canvas These Properties determine where the viewport will be positioned on the stacked canvas itself.
Fine I understand this or at least i thought i did until i played around wiht it and it dosen't seem to be working the way i understood it should from the online docs.
Problem:
On the stacked canvas itself i can see the viewport is represented by a box designated with a thin black line. If i resize the box the viewport property settings adjust as they do if i reposition the the box somewhere else on the stacked canvas. BUT when i run the form the viewport does not reflect some of the settings i.e. the viewport size changes but what isn't happening is the viewport position which seems to be fixed no matter what i input in the Viewport X/Y Position on Canvas property.
So am i changing the right settings so that the viewport shows me different parts of the stacked canvas at runtime?
Cheers
Gus

I just tested it for myself (Forms10g) and everything worked fine. Is your canvas 'large enough'? During testing I recognized that you can't set the viewport in a way that there would be 'free space' left with nothing displaed in it.
What I mean is:
Lets say your stacked canvas has the with of 600 points, 500 points are visible then you can't set the viewport at x=200 because there would be 100 points left with nothing to display into it. In this case Forms sets the viewport x=100 so everything fits.
(In fact I first thought of a bug myself before I recognized this)
Frank

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Setting stacked canvas properties when inside a tab canvas

Hi all,
I grope setting the x and y position of a stacked canvas programmatically : I work inside a tab canvas , there is one multirecord based block which is split into two tab pages. The problem is that the x and y positions of each first item in each tab of the block are no the same. And I want to hide and show the stacked canvas on which is based the scrollbar of the block , according to the top_most_tab_page.
The stacked canvas has the same width and height as the tab canvas ; it has viewport width set to the width of the scrollbar , say 0.415 ; it has viewport height set to the length of the scrollbar , say 1.833 ; the viewport X/Y position on canvas properties are set to 0.
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Thank you very much indeed.

I did a little test and it works (it'll only take you 3 min)
Create a new Form.
Add 3 Canvases 1 Content and 2 Tab with the following Properties
Content
Vieport X Position on Canvas: 0
Vieport Y Position on Canvas: 0
Width: 540
Height: 324
Master Tabs
Vieport X: 35
Vieport Y: 20
Vieport Width: 460
Vieport Heigth: 280
Detail Tabs
Vieport X: 150
Vieport Y: 95
Vieport Width: 260
Vieport Heigth: 160
Then go to Layout editor and while viewing the Content Canvas go to the menu View -> Stacked View...
From there select both tab canvases to be shown.
Also add a dummy item (i.e a button )somewhere in the form otherwise nothing will appear when you run the form.

Viewport setting is Not giving right output when forms on the Web

I have a stacked canvas which has a rounded rectangular graphics. When I manipulate the viewable area using viewport settings, I am getting different (unxepected) view when the form is deployed on the web. for example,with the viewport x position on canvas set at 0, viewport y position on canvas set at 13, and view height set at say 18, the form displays unexpected area when on the web. when on client/server arch. it behaves fine.
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Thanx

Hi,
This has been reported as a bug for Forms 6i and was fixed in a recent patch set. I assume that For,s 9i inherited this problem form 6i. The work around for this issue is to dynamically set x pos of the viewport:
SET_VIEW_PROPERTY('stacked1',VIEWPORT_X_POS_ON_CANVAS,get_view_property('stacked1',VIEWPORT_X_POS_ON_CANVAS));
Frank

Multiple canvases overlapping other canvas

I have 3 canvases in one form. The first one will appear at the top and the other 2 will appear at the bottom. I have created a radio button in the first canvas to allow the user to have to option to choose. If the first option is choosed, the 2nd canvas will appear at the bottom of the screen(3rd canvas will be hidden) and if the 2nd option is selected, the 3rd canvas will appear same position as 2nd canvas and the 2nd canvas will be hidden.
The "VIEWPORT_Y_POS" and ""VIEWPORT_Y_POS_ON_CANVAS" for the 1st canvas is set to ZERO while the 2nd and 3rd is set to 200.
The "HEIGHT" property for the 1st canvas is 155 and the other 2 canvases is 480.
During the POST_NEW_FORM and after the user selected the second option, the 1st canvas and 3rd canvas display nicely(the 2nd canvas hidden). But after the data being displayed and some of the fields in the 3rd canvas has been enabled, the 3rd canvas being overlapped by the first canvas at the top portion.
I have double checked the coding and there is no run-time setting the canvas viewport Y position property. What was wrong with the setting? This program has been running in our production server(Application Server 9.0.2) quite some time without any problem. But, when copied to our development server(application server 9.0.4), it gave me this kind of problem.
Is this a bug for the newer version of application server? or it's the setting problem to the canvas?

I have tried to set the viewport of the canvas programatically during run-time, but seems like the same problem happened.
I tried to set the viewport Y position on canvas to Zero instead of 200 and then the viewport Y position to 200 at design-time. My problem solved!
But the question is why the 2nd canvas didn't give me this kind of problem even I have set the viewport Y position on canvas same as the 3rd canvas(the canvas will appear same position as the 3rd canvas) wherelse the 3rd canvas did?
Another question is why when I run this form on the Apps Server 9.0.2 no problem but Apps Server 9.0.4 did?
Thanks.
Cheong

Content canvas to stacked canvas for scroll bars

I have a form which has more items. Initially I developed the form with content canvas(this has vertical scroll bar). now I changed this canvas to stacked canvas to get horizontal + vertical scroll bar. But I am not able to do it. Can any one please advice me how to achieve. Basically I need horizontal + veritcal scroll, so that user can easily scroll it.
Appreciate your help.
Thanks in Advance!!

Hi
This is a common task in Oracle Applications forms, the steps would be:
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- Modify the block to show vertical scroll bar, display it on content canvas, to the right of the window
- Accommodate remaining fields on stacked canvas, all of them from 0.0 to the right.
- Modify stacked canvas viewport size and position to be shown in the space between the fixed fields on the content canvas and the vertical scrollbar on it, allow for space to the horizontal scrollbar
- As Craig's answer states, modify stacked canvas property to show horizontal scrollbar

Multiple canvas overlapping other canvas

I have 3 canvases in one form. The first one will appear at the top and the other 2 will appear at the bottom. I have created a radio button in the first canvas to allow the user to have to option to choose. If the first option is choosed, the 2nd canvas will appear at the bottom of the screen(3rd canvas will be hidden) and if the 2nd option is selected, the 3rd canvas will appear same position as 2nd canvas and the 2nd canvas will be hidden.
The "VIEWPORT_Y_POS" and ""VIEWPORT_Y_POS_ON_CANVAS" for the 1st canvas is set to ZERO while the 2nd and 3rd is set to 200.
The "HEIGHT" property for the 1st canvas is 155 and the other 2 canvases is 480.
During the POST_NEW_FORM and after the user selected the second option, the 1st canvas and 3rd canvas display nicely(the 2nd canvas hidden). But after the data being displayed and some of the fields in the 3rd canvas has been enabled, the 3rd canvas being overlapped by the first canvas at the top portion.
I have double checked the coding and there is no run-time setting the canvas viewport Y position property. What was wrong with the setting? This program has been running in our production server(Application Server 9.0.2) quite some time without any problem. But, when copied to our development server(application server 9.0.4), it gave me this kind of problem.
Is this a bug for the newer version of application server? or it's the setting problem to the canvas?

I have tried to set the viewport of the canvas programatically during run-time, but seems like the same problem happened.
I tried to set the viewport Y position on canvas to Zero instead of 200 and then the viewport Y position to 200 at design-time. My problem solved!
But the question is why the 2nd canvas didn't give me this kind of problem even I have set the viewport Y position on canvas same as the 3rd canvas(the canvas will appear same position as the 3rd canvas) wherelse the 3rd canvas did?
Another question is why when I run this form on the Apps Server 9.0.2 no problem but Apps Server 9.0.4 did?
Thanks.
Cheong

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When changing the canvas size of a smart object, the layer on the original document will distort visually since it doesn't update the size of the smart object.
Is there a solution to this, or an easy way to quickly update every instance of the smart object on the original doc?
To clarify: I know that you can change the dimensions of the smart object on the original doc and it'll fix it, my question is if there's a way to automatically have that happen and have the original doc smart objects respect your canvas size changes on the smart object doc.
Reproduce:
1) Draw a circle
2) Turn it into a smart object
3) Go into the smart object, change the canvas size by increasing the height of the canvas. The smart object should now have a circle with blank space above/below it.
4) Save the smart object
5) The circle on the original document will now be squished.
I'm using Photoshop CS5

xg3 wrote:
When changing the canvas size of a smart object, the layer on the original document will distort visually since it doesn't update the size of the smart object.
When you change the canvas size of a document the only layer that will change is a backgroung layer for it does not support transparency so its pixels will be changed. However a background layer should not distort it may be cropped and have canvas added in which case the color of the empty canvas can be set in the canvas size dialog. All other layer including Smart Object layer should not chang at all. Layer positioning in relationship to the canvas and the new canvas size is set during the canvas size change. Layers can be any size and have any aspect ratio. Their sizes can be smaller, the same or larger then the canvas size. Even layer that can fit within a documents canvas size may be positioned so that all, some or none of the layer is over the documents canvas.
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I think what you did was to open the smart object in photoshop change its canvas saze then save it. The updated smart object is realy round but you dont see that it is becaue it is being transformec ti fit the original documents canvas. If you do a Canvas size on the codument you will see the original docyment canvas size is not change and thet your now squaching a now changed taller object into a shorter canvas. With each Smart Obkect layer there is as associated transform.
No I was wrong I just tried that and it looks like the transform was not the problem as yo can see I dir a Ctrl+T so you can see the size of the smart object layer is now biger then the original document and is positioned centered canvas is still 300x300 white area in image

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I have a canvas with
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canvas.verticalScrollPosition = canvas.maxVerticalScrollPosition;
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Hello alll,
i have just created a form with master form and tab canvas
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==================================================
Have any one some reasons...??
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Hi again,
i found it...
My problem was that all canvases has same view port so i have changed the the view y position on canvas on the tab one and so it wa disappearing behind the content one since both have the same view y position =0
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Anyone knows how to put a tab canvas inside a tab canvas.
thanks.

I did a little test and it works (it'll only take you 3 min)
Create a new Form.
Add 3 Canvases 1 Content and 2 Tab with the following Properties
Content
Vieport X Position on Canvas: 0
Vieport Y Position on Canvas: 0
Width: 540
Height: 324
Master Tabs
Vieport X: 35
Vieport Y: 20
Vieport Width: 460
Vieport Heigth: 280
Detail Tabs
Vieport X: 150
Vieport Y: 95
Vieport Width: 260
Vieport Heigth: 160
Then go to Layout editor and while viewing the Content Canvas go to the menu View -> Stacked View...
From there select both tab canvases to be shown.
Also add a dummy item (i.e a button )somewhere in the form otherwise nothing will appear when you run the form.

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Hi ,
In my form , i have only one control block . in this block i have one display item. I have specified canvas for this item as "CANVAS4".
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Canvas is disappearing .
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Please take a look at: http://blogs.oracle.com/shay/entry/10_commandments_for_the_otn_fo
In order for anyone to offer valuable feedback, we ALWAYS need to know what product versions you are using, which Operating Systems are involved, client side information (browser, jre, os, etc), and if an error is involved, what are the details of the error.
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When the Form starts, it shows first tab correctly. Now if I
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Viewport Y position on Canvas : 0
Width : 9.2
Height : 6.8
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Viewport X position : 0.1
Viewport Y position : 0.5
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Hello Deepak Kori,
thanks a lot for your reply!
I read this SAP note and the note with additional information (129352).
As i understand we can do a homogeneous system copy as follows:
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- Creating a backup (migration) from the source system (7.6.00.18)
- recovery with initialization of this backup on the new server
- upgrade of the DB instance to SAP MAXDB 7.8.02.29
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In form 6i. windows 2003 , client windows 2000
Message was edited by:
Kamran

You can create a stacked canvase, put it over a content canvas.
Then you have to use the routine SCROLL_VIEW to scroll.
Sample:
SCROLL_VIEW built-in
Description
Moves the view to a different position on its canvas by changing the Viewport X Position on Canvas and
Viewport Y Position on Canvas properties. Moving the view makes a different area of the canvas visible
to the operator, but does not change the position of the view within the window.
Note: For a content or toolbar canvas, the window in which the canvas is displayed represents the view
for that canvas. For a stacked canvas, the view size is controlled by setting the Viewport Width and
Viewport Height properties.
Syntax
PROCEDURE SCROLL_VIEW
(view_id ViewPort ,
x NUMBER ,
y NUMBER);
PROCEDURE SCROLL_VIEW
(view_name VARCHAR2 ,
x NUMBER ,
y NUMBER);
Built-in Type unrestricted procedure
Enter Query Mode yes
Parameters
view_id Specifies the unique ID that Form Builder assigns the view when it creates
the object. Use the FIND_VIEW built-in to return the ID to an
appropriately typed variable. The data type of the ID is ViewPort.
view_name Specifies the name that you gave the object when defining it. The data type
of the name is VARCHAR2.
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upper left corner of the canvas.
y Specifies the y coordinate of the view’s upper left corner relative to the
upper left corner of the canvas.
SCROLL_VIEW examples
** Built-in: SCROLL_VIEW
** Example: Scroll the view whose name is passed in 10% to
** the right or left depending on the ’direction’
** parameter.
PROCEDURE Scroll_Ten_Percent( viewname VARCHAR2,
direction VARCHAR2 ) IS
vw_id ViewPort;
vw_wid NUMBER;
vw_x NUMBER;
cn_id Canvas;
cn_wid NUMBER;
ten_percent NUMBER;
new_x NUMBER;
old_y NUMBER;
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ten_percent := 0.10 * (cn_wid - vw_wid);
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** Calculate the new x position of the view on its canvas
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** Closer than ten percent of the distance to the edge
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ELSE
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END IF;
ELSIF direction=’RIGHT’ THEN
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ELSE
new_x := cn_wid - vw_wid;
END IF;
END IF;
** Scroll the view that much horizontally
old_y := Get_View_Property(vw_id,VIEWPORT_Y_POS_ON_CANVAS);
Scroll_View( vw_id, new_x , old_y );
END;
Let me know if you need more info.
Warm Regards,
Raja,

Want to download Defauld Progress Bar from Oralce Site

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6     Add trigger code to show each frame as appropriate. Depending on your application you might do this within a PL/SQL loop, or in a WHEN-TIMER-EXPIRED trigger. Change the frame by programmatically adjusting the Viewport X Position on Canvas and Viewport Y Position on Canvas properties to position the viewport visible on the content canvas over the desired frame.
if responses are helpful or correct please mark it
Baig,
http://baigsorcl.blogspot.com

"Viewport X/Y Position on Canvas" ??????

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