From wabsie at gmail.com  Sun Mar 15 16:56:51 2009
From: wabsie at gmail.com (Mark Ruvald Pedersen)
Date: Sun, 15 Mar 2009 20:56:51 +0000 (UTC)
Subject: [Agar]
	=?utf-8?q?trying_to_wrap_Agar_GUI_elements_in_C++_class_?=
	=?utf-8?q?=28failing_with=09callbacks=29?=
References: <ee25b50a0812091234q404b749an8c101af5c8f68bc@mail.gmail.com>
Message-ID: <loom.20090315T202923-288@post.gmane.org>

Ocamler <ocamler at ...> writes:
> Hi,I'm trying to use Agar from C++, and am having trouble getting event 
callbacks, like those initiated by AG_Button click events, to call a class 
method properly.? 

Try this:

#include <agar/core.h>
#include <agar/gui.h>
#include <agar/dev.h>
#include <stdio.h>

class cppgui
{
private:
	AG_Window *win_;
	int foo;

	// Callbacks must be global (and thus static)!!!
	static void ButtonCallback(AG_Event *event) {
		cppgui *This = (cppgui*)AG_PTR(1); // Let the static metod have 
acces to the calling object instance
		printf("You clicked the button! And foo is %i\n", This->foo);
	}

public:
	cppgui()
	{
		this->foo = 1234; // something...

		win_ = AG_WindowNew(0);
		AG_ButtonNewFn(win_, 0, "Click me", ButtonCallback, "%p", this);
		AG_WindowShow(win_);
	}

	~cppgui() {
		AG_Destroy();
	}

	void run() {
		AG_EventLoop();
	}
};

void die(const char *format, ...)
{
	va_list arg;
	va_start(arg, format);
	vfprintf(stderr, format, arg);
	va_end(arg);
	exit(EXIT_FAILURE);
}

int main(int argc, char *argv[])
{
	if (AG_InitCore("test", 0) == -1)
		die("%s\n", AG_GetError());

	if (AG_InitVideo(200, 200, 32, 0) == -1)
		die("%s\n", AG_GetError());

	cppgui test;
	test.run();

	return 0;
}

Let me know if you found some other way.
- Eisbaw



From rmorales2005 at gmail.com  Mon Mar 16 17:49:26 2009
From: rmorales2005 at gmail.com (Robert J. Morales)
Date: Mon, 16 Mar 2009 16:49:26 -0500
Subject: [Agar] AG_Console not auto-scrolling properly
Message-ID: <gpmhgg$gjs$1@ger.gmane.org>

As demonstrated in the test program below, AG_Console will not properly 
"auto-scroll" as is documented.

Another demonstrated bug is that the scrollbar's "box" will draw itself 
outside of the actual scrollbar.

-----------------------------------------------------------------------

#include <agar/core.h>
#include <agar/gui.h>

static AG_Timeout timeout;
static AG_Console* cons;

static Uint32 cons_timer(void *obj, Uint32 ival, void *arg)
{
	static unsigned long int counter;
	AG_ConsoleMsg(cons, "%lu", ++counter);
	return ival;
}

int main(int argc, char** argv)
{
	AG_Window* wnd;

	if (AG_InitCore("agar-test", 0) == -1)
		return -1;

	if (AG_InitVideo(320, 240, 32, AG_VIDEO_BGPOPUPMENU|AG_VIDEO_HWSURFACE) 
== -1)
		return -1;

	wnd = AG_WindowNew(AG_WINDOW_NOBUTTONS|AG_WINDOW_NORESIZE);
	AG_WindowSetCaption(wnd, "%s", "Console Test");

	cons = AG_ConsoleNew(wnd, AG_CONSOLE_EXPAND);

	AG_SetTimeout(&timeout, cons_timer, NULL, 0);
	AG_AddTimeout(wnd, &timeout, 500);

	AG_WindowSetGeometryAlignedPct(wnd, AG_WINDOW_MC, 75, 75);
	AG_WindowShow(wnd);
	AG_EventLoop();

	return 0;
}


From rmorales2005 at gmail.com  Mon Mar 16 19:54:35 2009
From: rmorales2005 at gmail.com (Robert J. Morales)
Date: Mon, 16 Mar 2009 18:54:35 -0500
Subject: [Agar] Auto-scrolling fixed (was Re: AG_Console not auto-scrolling
	properly)
In-Reply-To: <gpmhgg$gjs$1@ger.gmane.org>
References: <gpmhgg$gjs$1@ger.gmane.org>
Message-ID: <gpmor4$7ej$1@ger.gmane.org>

Robert J. Morales wrote:
> As demonstrated in the test program below, AG_Console will not properly "auto-scroll" as is documented.
> 
> Another demonstrated bug is that the scrollbar's "box" will draw itself outside of the actual scrollbar.

Ok, I managed to fix the auto-scrolling behavior by making a very simple change to AG_ConsoleAppendLine().

The bug with the scrollbar remains, however.

----------------------------------------------------------------------

AG_ConsoleLine *
AG_ConsoleAppendLine(AG_Console *cons, const char *s)
{
	AG_ConsoleLine *ln;
	int max_lines;

	AG_ObjectLock(cons);

	cons->lines = Realloc(cons->lines, (cons->nLines+1) *
				           sizeof(AG_ConsoleLine));
	ln = &cons->lines[cons->nLines++];
	if (s != NULL) {
		ln->text = Strdup(s);
		ln->len = strlen(s);
	} else {
		ln->text = NULL;
		ln->len = 0;
	}
	ln->cons = cons;
	ln->selected = 0;
	ln->p = NULL;
	ln->font = NULL;
	ln->surface = -1;
	ln->cBg = AG_MapRGBA(agVideoFmt, 0,0,0,0);
	ln->cFg = AG_MapRGB(agVideoFmt, 250,250,230);

	max_lines = (cons->r.h / agTextFontHeight) - 1;

	if (cons->nLines > max_lines)
		cons->rOffs = cons->nLines - max_lines;

	AG_ObjectUnlock(cons);
	return (ln);
}


From jrenggli at gmail.com  Tue Mar 17 05:26:08 2009
From: jrenggli at gmail.com (Julien Renggli)
Date: Tue, 17 Mar 2009 09:26:08 +0000
Subject: [Agar] libglade-like manager
Message-ID: <gpnqbg$kne$1@ger.gmane.org>

Hello,

I'm new to Agar but I really like what I'm seeing. It looks like it's 
working well, easy to use, and the concepts sound very good. Well done 
guys ! And now for a round of questions I couldn't find answers on the 
website:

I have searched for a libglade-like manager that would basically read an 
(xml?) file and take care of widgets' allocation/deallocation, and other 
painful-to-maintain stuff. I couldn't find any (did I miss the 
obvious?). Is that something existing? Being prepared? I tried writing 
something myself, but progress is slow (the step back from C++ to C is 
not so easy...) and it's more guesswork than anything else (can provide 
it if there is interest). But at least I'm learning the library that way :)

On the same line, is there an Agar editor (again, similar to Glade)? 
That would be useful for UI desing, no need to restart an app everytime 
a widget is moved 3px to the left.

And what about the C++ wrapper? Is it already there, or can we expect it 
sometime soon (weeks, months, years?).

Thanks,

Julien