/*
 * $Id$
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. 
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2010 Blender Foundation.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/editors/space_info/info_draw.c
 *  \ingroup spinfo
 */



#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <limits.h>

#include "BLF_api.h"

#include "BLI_blenlib.h"
#include "BLI_utildefines.h"

#include "DNA_space_types.h"
#include "DNA_screen_types.h"

// #include "BKE_suggestions.h"
#include "BKE_report.h"


#include "MEM_guardedalloc.h"

#include "BIF_gl.h"
#include "BIF_glutil.h"

#include "ED_datafiles.h"
#include "ED_types.h"

#include "UI_resources.h"

#include "info_intern.h"
#include "../space_info/textview.h"

/* complicates things a bit, so leaving in old simple code */
#define USE_INFO_NEWLINE

static void info_report_color(unsigned char *fg, unsigned char *bg, Report *report, int bool)
{
	if(report->flag & SELECT) {
		fg[0]=255; fg[1]=255; fg[2]=255;
		if(bool) {
			bg[0]=96; bg[1]=128; bg[2]=255;
		}
		else {
			bg[0]=90; bg[1]=122; bg[2]=249;
		}
	}
	else {
		fg[0]=0; fg[1]=0; fg[2]=0;
		
		if (report->type & RPT_ERROR_ALL) {
			if (bool) { bg[0]=220; bg[1]=0;   bg[2]=0;   }
			else      { bg[0]=214; bg[1]=0;   bg[2]=0;   }
		}
		else if (report->type & RPT_WARNING_ALL) {
			if (bool) { bg[0]=220; bg[1]=128; bg[2]=96;  }
			else      { bg[0]=214; bg[1]=122; bg[2]=90;  }
		}
#if 0 // XXX: this looks like the selected color, so don't use this
		else if (report->type & RPT_OPERATOR_ALL) {
			if (bool) { bg[0]=96;  bg[1]=128; bg[2]=255; }
			else      { bg[0]=90;  bg[1]=122; bg[2]=249; }
		}
#endif
		else if (report->type & RPT_INFO_ALL) {
			if (bool) { bg[0]=0;   bg[1]=170; bg[2]=0;   }
			else      { bg[0]=0;   bg[1]=164; bg[2]=0;   }
		}
		else if (report->type & RPT_DEBUG_ALL) {
			if (bool) { bg[0]=196; bg[1]=196; bg[2]=196; }
			else      { bg[0]=190; bg[1]=190; bg[2]=190; }
		}
		else {
			if (bool) { bg[0]=120; bg[1]=120; bg[2]=120; }
			else      { bg[0]=114; bg[1]=114; bg[2]=114; }
		}
	}
}

/* reports! */
#ifdef USE_INFO_NEWLINE
static void report_textview_init__internal(TextViewContext *tvc)
{
	Report *report= (Report *)tvc->iter;
	const char *str= report->message;
	const char *next_str= strchr(str + tvc->iter_char, '\n');

	if(next_str) {
		tvc->iter_char_next= (int)(next_str - str);
	}
	else {
		tvc->iter_char_next= report->len;
	}
}

static int report_textview_skip__internal(TextViewContext *tvc)
{
	SpaceInfo *sinfo= (SpaceInfo *)tvc->arg1;
	const int report_mask= info_report_mask(sinfo);
	while (tvc->iter && (((Report *)tvc->iter)->type & report_mask)==0) {
		tvc->iter= (void *)((Link *)tvc->iter)->prev;
	}
	return (tvc->iter != NULL);
}

#endif // USE_INFO_NEWLINE

static int report_textview_begin(TextViewContext *tvc)
{
	// SpaceConsole *sc= (SpaceConsole *)tvc->arg1;
	ReportList *reports= (ReportList *)tvc->arg2;

	tvc->lheight= 14; //sc->lheight;
	tvc->sel_start= 0;
	tvc->sel_end= 0;

	/* iterator */
	tvc->iter= reports->list.last;

	glClearColor(120.0/255.0, 120.0/255.0, 120.0/255.0, 1.0);
	glClear(GL_COLOR_BUFFER_BIT);

#ifdef USE_INFO_NEWLINE
	tvc->iter_tmp= 0;
	if(tvc->iter && report_textview_skip__internal(tvc)) {
		/* init the newline iterator */
		tvc->iter_char= 0;
		report_textview_init__internal(tvc);

		return TRUE;
	}
	else {
		return FALSE;
	}
#else
	return (tvc->iter != NULL);
#endif
}

static void report_textview_end(TextViewContext *UNUSED(tvc))
{
	/* pass */
}

#ifdef USE_INFO_NEWLINE
static int report_textview_step(TextViewContext *tvc)
{
	/* simple case, but no newline support */
	Report *report= (Report *)tvc->iter;

	if(report->len <= tvc->iter_char_next) {
		tvc->iter= (void *)((Link *)tvc->iter)->prev;
		if(tvc->iter && report_textview_skip__internal(tvc)) {
			tvc->iter_tmp++;

			tvc->iter_char= 0; /* reset start */
			report_textview_init__internal(tvc);

			return TRUE;
		}
		else {
			return FALSE;
		}
	}
	else {
		/* step to the next newline */
		tvc->iter_char= tvc->iter_char_next + 1;
		report_textview_init__internal(tvc);

		return TRUE;
	}
}

static int report_textview_line_get(struct TextViewContext *tvc, const char **line, int *len)
{
	Report *report= (Report *)tvc->iter;
	*line= report->message + tvc->iter_char;
	*len= tvc->iter_char_next - tvc->iter_char;
	return 1;
}

static int report_textview_line_color(struct TextViewContext *tvc, unsigned char fg[3], unsigned char bg[3])
{
	Report *report= (Report *)tvc->iter;
	info_report_color(fg, bg, report, tvc->iter_tmp % 2);
	return TVC_LINE_FG | TVC_LINE_BG;
}


#else // USE_INFO_NEWLINE

static int report_textview_step(TextViewContext *tvc)
{
	SpaceInfo *sinfo= (SpaceInfo *)tvc->arg1;
	const int report_mask= info_report_mask(sinfo);
	do {
		tvc->iter= (void *)((Link *)tvc->iter)->prev;
	} while (tvc->iter && (((Report *)tvc->iter)->type & report_mask)==0);

	return (tvc->iter != NULL);
}

static int report_textview_line_get(struct TextViewContext *tvc, const char **line, int *len)
{
	Report *report= (Report *)tvc->iter;
	*line= report->message;
	*len= report->len;

	return 1;
}

static int report_textview_line_color(struct TextViewContext *tvc, unsigned char fg[3], unsigned char bg[3])
{
	Report *report= (Report *)tvc->iter;
	info_report_color(fg, bg, report, tvc->iter_tmp % 2);
	return TVC_LINE_FG | TVC_LINE_BG;
}

#endif // USE_INFO_NEWLINE

#undef USE_INFO_NEWLINE

static int info_textview_main__internal(struct SpaceInfo *sinfo, struct ARegion *ar, ReportList *reports, int draw, int mval[2], void **mouse_pick, int *pos_pick)
{
	int ret= 0;
	
	View2D *v2d= &ar->v2d;

	TextViewContext tvc= {0};
	tvc.begin= report_textview_begin;
	tvc.end= report_textview_end;

	tvc.step= report_textview_step;
	tvc.line_get= report_textview_line_get;
	tvc.line_color= report_textview_line_color;

	tvc.arg1= sinfo;
	tvc.arg2= reports;

	/* view */
	tvc.sel_start= 0;
	tvc.sel_end= 0;
	tvc.lheight= 14; //sc->lheight;
	tvc.ymin= v2d->cur.ymin;
	tvc.ymax= v2d->cur.ymax;
	tvc.winx= ar->winx;

	ret= textview_draw(&tvc, draw, mval, mouse_pick, pos_pick);
	
	return ret;
}

void *info_text_pick(struct SpaceInfo *sinfo, struct ARegion *ar, ReportList *reports, int mouse_y)
{
	void *mouse_pick= NULL;
	int mval[2];

	mval[0]= 0;
	mval[1]= mouse_y;

	info_textview_main__internal(sinfo, ar, reports, 0, mval, &mouse_pick, NULL);
	return (void *)mouse_pick;
}


int info_textview_height(struct SpaceInfo *sinfo, struct ARegion *ar, ReportList *reports)
{
	int mval[2] = {INT_MAX, INT_MAX};
	return info_textview_main__internal(sinfo, ar, reports, 0,  mval, NULL, NULL);
}

void info_textview_main(struct SpaceInfo *sinfo, struct ARegion *ar, ReportList *reports)
{
	int mval[2] = {INT_MAX, INT_MAX};
	info_textview_main__internal(sinfo, ar, reports, 1,  mval, NULL, NULL);
}