Anyone up to help me create an OpenGL commandline window

[zemtex]

Howdy OpenGL people.

Is anyone up to help me solve a few problems creating a custom OpenGL commandline terminal window? I know how to do this in GDI, GDI+ and DirectX9 but I don't know how to do it in OpenGL. I simply want to create a full screen (blackish) terminal window where I can issue commands, just like the old ms-dos command line window. Perhaps 80x25 character screen. You should be able to scroll up and down in the window by using PGUP and PGDOWN.

My problem is that I don't know how to align text in a window and how to give colors to individual commands and characters, that requires that you know where the next character must be drawn and I don't know how OpenGL calculates width of character fonts. When you draw text, it should wrap to the next line of course and so forth.

Here is just a sample of what the terminal window could look like.

[Farabi]

Hi zemtex,
Well youre the best here about OpenGL, what do you expect from me, but I'll do what I can.

I used this for showing the text

Code Select Expand


; I took it from Frank Charlet Code
Enter_2D_Mode proc _Width:real4, _Height:real4
local __Width:real8
local __Height:real8

fld dword ptr [_Width]
fstp qword ptr [__Width]
fld dword ptr [_Height]
fstp qword ptr [__Height]
invoke glMatrixMode, GL_MODELVIEW
invoke glPushMatrix
invoke glLoadIdentity
invoke glMatrixMode, GL_PROJECTION
invoke glPushMatrix
invoke glLoadIdentity
invoke glOrtho, FP8(0.0), __Width, __Height, FP8(0.0), FP8(0.1), FP8(100.0)
ret
Enter_2D_Mode endp

; ------------------------------------------------------
; Name: Leave_2d_Mode()
; Desc: Restore previous matrices mode
Leave_2d_Mode proc
invoke glMatrixMode, GL_PROJECTION
invoke glPopMatrix
invoke glMatrixMode, GL_MODELVIEW
invoke glPopMatrix
ret
Leave_2d_Mode endp

fShowText proc x:dword,y:dword,lptext:dword
LOCAL px,py:dword

push x
fild dword ptr[esp]
fstp px
pop eax
push y
fild dword ptr[esp]
fstp py
pop eax
invoke Enter_2D_Mode,FP4(640.0),FP4(480.0)
invoke glTranslatef, FP4(0.0), FP4(0.0), FP4(-1.0)
invoke glColor3f,FP4(1.0),FP4(1.0),FP4(1.0)
invoke lstrlen,lptext
invoke Display_2D_Text,px,py,fnt3d,lptext,eax
invoke Leave_2d_Mode

ret
fShowText endp


For coloring text youll need to use invoke glColor3f,FP4(1.0),FP4(1.0),FP4(1.0) before you wrote any text. You can create a parser so you coloring each single word, but I bet it took times.
I dont know what you need exactly but that is all I know.

[Siekmanski]

Hello zemtex

What's the name of the font you're using ( I like  :bg )

[zemtex]

Search for "Terminus font"  :U