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Strange issue with TEXTOUT_P
10-04-2015, 08:17 PM (This post was last modified: 10-04-2015 08:38 PM by komame.)
Post: #1
Strange issue with TEXTOUT_P
Can someone explain to me why sometimes the first char is not printed?
This issue occurs on both the emulator and on the real HP Prime.

Code:
EXPORT TEXTOUT_ISSUE()
BEGIN
DIMGROB_P(G1,512,40);
RECT_P();
RECT_P(G1);
//textout using width 510 at position 0,0
TEXTOUT_P("ABC / 1",G1,0,0,7,#FFFFFF,510,0); //OK
BLIT_P(G1);
WAIT(-1);
RECT_P(G1);
//textout using width 511 at position 0,0
TEXTOUT_P("ABC / 2",G1,0,0,7,#FFFFFF,511,0); //the "A" is missing
BLIT_P(G1);
WAIT(-1);
RECT_P(G1);
//textout using width 511 at position 1,1
TEXTOUT_P("ABC / 3",G1,1,1,7,#FFFFFF,511,0); //OK
BLIT_P(G1);
WAIT(-1);
RECT_P(G1);
//textout using width 511 at position -5,-5
TEXTOUT_P("ABC / 4",G1,-5,-5,7,#FFFFFF,511,0); //the "A" is missing
BLIT_P(G1);
WAIT(-1);
RECT_P(G1);
//textout using width 510 at position -5,-5
TEXTOUT_P("ABC / 5",G1,-5,-5,7,#FFFFFF,510,0); //OK
BLIT_P(G1);
WAIT(-1);
END;

EDIT:
It occurs only when the width is equal to 511 and the x-coordinate is equal or less than 0.

Piotr Kowalewski
Radioactive Wastes - game for HP Prime
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10-05-2015, 06:35 AM
Post: #2
RE: Strange issue with TEXTOUT_P
Hello,

I will put it in the issue list.

Cyrille

Although I work for the HP calculator group, the views and opinions I post here are my own. I do not speak for HP.
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10-05-2015, 10:25 AM
Post: #3
RE: Strange issue with TEXTOUT_P
Is it normal that the maximum value of the x coordinate inj TEXTOUT_P can only be 511? Currently it is not possible to print a text in area of GROB where x is equal 512 and above.

Piotr Kowalewski
Radioactive Wastes - game for HP Prime
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10-05-2015, 03:39 PM
Post: #4
RE: Strange issue with TEXTOUT_P
Off the top of my head, I'd suspect something might be overflowing internally here. I am curious why you are trying to print up to 500+ pixels when you screen is not that wide...?

TW

Although I work for the HP calculator group, the views and opinions I post here are my own.
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10-05-2015, 04:31 PM
Post: #5
RE: Strange issue with TEXTOUT_P
I just wanted to inform others about it, because other graphical commands like RECT_P or LINE_P work in this area (512+) and the TEXTOUT_P is the only exception.
I think it might be useful only for games with scrolling (for example), but rather not for professional use.
However, I still think that it should work since it is possible to create GROB wider than 512 pixels.

Piotr Kowalewski
Radioactive Wastes - game for HP Prime
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