/*
===========================================================================

IceTech GPL Source Code
Copyright (C) 2026 Justin Marshall 

This file is part of the IceTech GPL Source Code (?IceTech Source Code?).  

IceTech Source Code 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 3 of the License, or
(at your option) any later version.

IceTech Source Code 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 IceTech Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the IceTech Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the IceTech Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing Justin Marshall, justinmarshall20@gmail.com

===========================================================================
*/

#include "precompiled.h"
#pragma hdrstop

#include "DeviceContext.h"

idVec4 idDeviceContext::colorPurple;
idVec4 idDeviceContext::colorOrange;
idVec4 idDeviceContext::colorYellow;
idVec4 idDeviceContext::colorGreen;
idVec4 idDeviceContext::colorBlue;
idVec4 idDeviceContext::colorRed;
idVec4 idDeviceContext::colorBlack;
idVec4 idDeviceContext::colorWhite;
idVec4 idDeviceContext::colorNone;


idCVar gui_smallFontLimit( "gui_smallFontLimit", "0.30", CVAR_GUI | CVAR_ARCHIVE, "" );
idCVar gui_mediumFontLimit( "gui_mediumFontLimit", "0.60", CVAR_GUI | CVAR_ARCHIVE, "" );

static uint32_t DC_ReadUTF8Char( const char *text, int &index ) {
	const unsigned char *s = (const unsigned char *)text + index;
	uint32_t c = s[0];

	if ( c < 0x80 || s[1] == '\0' ) {
		index++;
		return c;
	}
	if ( ( c & 0xE0 ) == 0xC0 ) {
		index += 2;
		return ( ( c & 0x1F ) << 6 ) | ( s[1] & 0x3F );
	}
	if ( ( c & 0xF0 ) == 0xE0 && s[2] != '\0' ) {
		index += 3;
		return ( ( c & 0x0F ) << 12 ) | ( ( s[1] & 0x3F ) << 6 ) | ( s[2] & 0x3F );
	}
	if ( ( c & 0xF8 ) == 0xF0 && s[2] != '\0' && s[3] != '\0' ) {
		index += 4;
		return ( ( c & 0x07 ) << 18 ) | ( ( s[1] & 0x3F ) << 12 ) | ( ( s[2] & 0x3F ) << 6 ) | ( s[3] & 0x3F );
	}

	index++;
	return c;
}


idList<idFont *> idDeviceContext::fonts;

int idDeviceContext::FindFont( const char *name ) {
	int c = fonts.Num();
	for (int i = 0; i < c; i++) {
		if (idStr::Icmp(name, fonts[i]->GetName()) == 0) {
			return i;
		}
	}

	idFont *font = renderSystem->RegisterFont( name );
	if (font != NULL) {
		for (int i = 0; i < fonts.Num(); i++) {
			if (fonts[i] == font) {
				return i;
			}
		}
		return fonts.Append( font );
	}

	common->Printf( "Could not register font %s\n", name );
		return -1;
}

void idDeviceContext::SetupFonts() {
	fonts.SetGranularity( 1 );

	fontLang = cvarSystem->GetCVarString( "sys_lang" );
	
	// western european languages can use the english font
	if ( fontLang == "french" || fontLang == "german" || fontLang == "spanish" || fontLang == "italian" ) {
		fontLang = "english";
	}

	// Default font has to be added first
	FindFont( "fonts" );
}

void idDeviceContext::SetFont( int num ) {
	if ( num >= 0 && num < fonts.Num() ) {
		activeFont = fonts[num];
	} else {
		activeFont = fonts[0];
	}
}


void idDeviceContext::Init() {
	xScale = 0.0;
	SetSize(VIRTUAL_WIDTH, VIRTUAL_HEIGHT);
	whiteImage = declManager->FindMaterial("guis/assets/white.tga");
	whiteImage->SetSort( SS_GUI );
	mbcs = false;
	SetupFonts();
	activeFont = fonts[0];
	colorPurple = idVec4(1, 0, 1, 1);
	colorOrange = idVec4(1, 1, 0, 1);
	colorYellow = idVec4(0, 1, 1, 1);
	colorGreen = idVec4(0, 1, 0, 1);
	colorBlue = idVec4(0, 0, 1, 1);
	colorRed = idVec4(1, 0, 0, 1);
	colorWhite = idVec4(1, 1, 1, 1);
	colorBlack = idVec4(0, 0, 0, 1);
	colorNone = idVec4(0, 0, 0, 0);
	cursorImages[CURSOR_ARROW] = declManager->FindMaterial("ui/assets/guicursor_arrow.tga");
	cursorImages[CURSOR_HAND] = declManager->FindMaterial("ui/assets/guicursor_hand.tga");
	scrollBarImages[SCROLLBAR_HBACK] = declManager->FindMaterial("ui/assets/scrollbarh.tga");
	scrollBarImages[SCROLLBAR_VBACK] = declManager->FindMaterial("ui/assets/scrollbarv.tga");
	scrollBarImages[SCROLLBAR_THUMB] = declManager->FindMaterial("ui/assets/scrollbar_thumb.tga");
	scrollBarImages[SCROLLBAR_RIGHT] = declManager->FindMaterial("ui/assets/scrollbar_right.tga");
	scrollBarImages[SCROLLBAR_LEFT] = declManager->FindMaterial("ui/assets/scrollbar_left.tga");
	scrollBarImages[SCROLLBAR_UP] = declManager->FindMaterial("ui/assets/scrollbar_up.tga");
	scrollBarImages[SCROLLBAR_DOWN] = declManager->FindMaterial("ui/assets/scrollbar_down.tga");
	cursorImages[CURSOR_ARROW]->SetSort( SS_GUI );
	cursorImages[CURSOR_HAND]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_HBACK]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_VBACK]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_THUMB]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_RIGHT]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_LEFT]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_UP]->SetSort( SS_GUI );
	scrollBarImages[SCROLLBAR_DOWN]->SetSort( SS_GUI );
	cursor = CURSOR_ARROW;
	enableClipping = true;
	overStrikeMode = true;
	mat.Identity();
	origin.Zero();
	initialized = true;
}

void idDeviceContext::Shutdown() {
	fontName.Clear();
	clipRects.Clear();
	fonts.Clear();
	Clear();
}

void idDeviceContext::Clear() {
	initialized = false;
	activeFont = NULL;
	mbcs = false;
}

idDeviceContext::idDeviceContext() {
	Clear();
}

void idDeviceContext::SetTransformInfo(const idVec3 &org, const idMat3 &m) {
	origin = org;
	mat = m;
}

// 
//  added method
void idDeviceContext::GetTransformInfo(idVec3& org, idMat3& m )
{
	m = mat;
	org = origin;
}
// 

void idDeviceContext::PopClipRect() {
	if (clipRects.Num()) {
		clipRects.RemoveIndex(clipRects.Num()-1);
	}
}

void idDeviceContext::PushClipRect(idRectangle r) {
	clipRects.Append(r);
}

void idDeviceContext::PushClipRect(float x, float y, float w, float h) {
	clipRects.Append(idRectangle(x, y, w, h));
}

bool idDeviceContext::ClippedCoords(float *x, float *y, float *w, float *h, float *s1, float *t1, float *s2, float *t2) {

	if ( enableClipping == false || clipRects.Num() == 0 ) {
		return false;
	}

	int c = clipRects.Num();
	while( --c > 0 ) {
		idRectangle *clipRect = &clipRects[c];
 
		float ox = *x;
		float oy = *y;
		float ow = *w;
		float oh = *h;

		if ( ow <= 0.0f || oh <= 0.0f ) {
			break;
		}

		if (*x < clipRect->x) {
			*w -= clipRect->x - *x;
			*x = clipRect->x;
		} else if (*x > clipRect->x + clipRect->w) {
			*x = *w = *y = *h = 0;
		}
		if (*y < clipRect->y) {
			*h -= clipRect->y - *y;
			*y = clipRect->y;
		} else if (*y > clipRect->y + clipRect->h) {
			*x = *w = *y = *h = 0;
		}
		if (*w > clipRect->w) {
			*w = clipRect->w - *x + clipRect->x;
		} else if (*x + *w > clipRect->x + clipRect->w) {
			*w = clipRect->Right() - *x;
		}
		if (*h > clipRect->h) {
			*h = clipRect->h - *y + clipRect->y;
		} else if (*y + *h > clipRect->y + clipRect->h) {
			*h = clipRect->Bottom() - *y;
		}

		if ( s1 && s2 && t1 && t2 && ow > 0.0f ) {
			float ns1, ns2, nt1, nt2;
			// upper left
			float u = ( *x - ox ) / ow;
			ns1 = *s1 * ( 1.0f - u ) + *s2 * ( u );

			// upper right
			u = ( *x + *w - ox ) / ow;
			ns2 = *s1 * ( 1.0f - u ) + *s2 * ( u );

			// lower left
			u = ( *y - oy ) / oh;
			nt1 = *t1 * ( 1.0f - u ) + *t2 * ( u );

			// lower right
			u = ( *y + *h - oy ) / oh;
			nt2 = *t1 * ( 1.0f - u ) + *t2 * ( u );

			// set values
			*s1 = ns1;
			*s2 = ns2;
			*t1 = nt1;
			*t2 = nt2;
		}
	}

	return (*w == 0 || *h == 0) ? true : false;
}


void idDeviceContext::AdjustCoords(float *x, float *y, float *w, float *h) {
	if (x) {
		*x *= xScale;
	}
	if (y) {
		*y *= yScale;
	}
	if (w) {
		*w *= xScale;
	}
	if (h) {
		*h *= yScale;
	}
}

void idDeviceContext::DrawStretchPic(float x, float y, float w, float h, float s1, float t1, float s2, float t2, const idMaterial *shader) {
	idDrawVert verts[4];
	glIndex_t indexes[6];
	indexes[0] = 3;
	indexes[1] = 0;
	indexes[2] = 2;
	indexes[3] = 2;
	indexes[4] = 0;
	indexes[5] = 1;
	verts[0].xyz[0] = x;
	verts[0].xyz[1] = y;
	verts[0].xyz[2] = 0;
	verts[0].st[0] = s1;
	verts[0].st[1] = t1;
	verts[0].normal[0] = 0;
	verts[0].normal[1] = 0;
	verts[0].normal[2] = 1;
	verts[0].tangents[0][0] = 1;
	verts[0].tangents[0][1] = 0;
	verts[0].tangents[0][2] = 0;
	verts[0].tangents[1][0] = 0;
	verts[0].tangents[1][1] = 1;
	verts[0].tangents[1][2] = 0;
	verts[1].xyz[0] = x + w;
	verts[1].xyz[1] = y;
	verts[1].xyz[2] = 0;
	verts[1].st[0] = s2;
	verts[1].st[1] = t1;
	verts[1].normal[0] = 0;
	verts[1].normal[1] = 0;
	verts[1].normal[2] = 1;
	verts[1].tangents[0][0] = 1;
	verts[1].tangents[0][1] = 0;
	verts[1].tangents[0][2] = 0;
	verts[1].tangents[1][0] = 0;
	verts[1].tangents[1][1] = 1;
	verts[1].tangents[1][2] = 0;
	verts[2].xyz[0] = x + w;
	verts[2].xyz[1] = y + h;
	verts[2].xyz[2] = 0;
	verts[2].st[0] = s2;
	verts[2].st[1] = t2;
	verts[2].normal[0] = 0;
	verts[2].normal[1] = 0;
	verts[2].normal[2] = 1;
	verts[2].tangents[0][0] = 1;
	verts[2].tangents[0][1] = 0;
	verts[2].tangents[0][2] = 0;
	verts[2].tangents[1][0] = 0;
	verts[2].tangents[1][1] = 1;
	verts[2].tangents[1][2] = 0;
	verts[3].xyz[0] = x;
	verts[3].xyz[1] = y + h;
	verts[3].xyz[2] = 0;
	verts[3].st[0] = s1;
	verts[3].st[1] = t2;
	verts[3].normal[0] = 0;
	verts[3].normal[1] = 0;
	verts[3].normal[2] = 1;
	verts[3].tangents[0][0] = 1;
	verts[3].tangents[0][1] = 0;
	verts[3].tangents[0][2] = 0;
	verts[3].tangents[1][0] = 0;
	verts[3].tangents[1][1] = 1;
	verts[3].tangents[1][2] = 0;
	
	bool ident = !mat.IsIdentity();
	if ( ident ) {
		verts[0].xyz -= origin;
		verts[0].xyz *= mat;
		verts[0].xyz += origin;
		verts[1].xyz -= origin;
		verts[1].xyz *= mat;
		verts[1].xyz += origin;
		verts[2].xyz -= origin;
		verts[2].xyz *= mat;
		verts[2].xyz += origin;
		verts[3].xyz -= origin;
		verts[3].xyz *= mat;
		verts[3].xyz += origin;
	}

	renderSystem->DrawStretchPic( &verts[0], &indexes[0], 4, 6, shader, ident );
	
}


void idDeviceContext::DrawMaterial(float x, float y, float w, float h, const idMaterial *mat, const idVec4 &color, float scalex, float scaley) {

	renderSystem->SetColor(color);

	float	s0, s1, t0, t1;
// 
//  handle negative scales as well	
	if ( scalex < 0 )
	{
		w *= -1;
		scalex *= -1;
	}
	if ( scaley < 0 )
	{
		h *= -1;
		scaley *= -1;
	}
// 
	if( w < 0 ) {	// flip about vertical
		w  = -w;
		s0 = 1 * scalex;
		s1 = 0;
	}
	else {
		s0 = 0;
		s1 = 1 * scalex;
	}

	if( h < 0 ) {	// flip about horizontal
		h  = -h;
		t0 = 1 * scaley;
		t1 = 0;
	}
	else {
		t0 = 0;
		t1 = 1 * scaley;
	}

	if ( ClippedCoords( &x, &y, &w, &h, &s0, &t0, &s1, &t1 ) ) {
		return;
	}

	AdjustCoords(&x, &y, &w, &h);

	DrawStretchPic( x, y, w, h, s0, t0, s1, t1, mat);
}

void idDeviceContext::DrawMaterialRotated(float x, float y, float w, float h, const idMaterial *mat, const idVec4 &color, float scalex, float scaley, float angle) {
	
	renderSystem->SetColor(color);

	float	s0, s1, t0, t1;
	// 
	//  handle negative scales as well	
	if ( scalex < 0 )
	{
		w *= -1;
		scalex *= -1;
	}
	if ( scaley < 0 )
	{
		h *= -1;
		scaley *= -1;
	}
	// 
	if( w < 0 ) {	// flip about vertical
		w  = -w;
		s0 = 1 * scalex;
		s1 = 0;
	}
	else {
		s0 = 0;
		s1 = 1 * scalex;
	}

	if( h < 0 ) {	// flip about horizontal
		h  = -h;
		t0 = 1 * scaley;
		t1 = 0;
	}
	else {
		t0 = 0;
		t1 = 1 * scaley;
	}

	if ( angle == 0.0f && ClippedCoords( &x, &y, &w, &h, &s0, &t0, &s1, &t1 ) ) {
		return;
	}

	AdjustCoords(&x, &y, &w, &h);

	DrawStretchPicRotated( x, y, w, h, s0, t0, s1, t1, mat, angle);
}

void idDeviceContext::DrawStretchPicRotated(float x, float y, float w, float h, float s1, float t1, float s2, float t2, const idMaterial *shader, float angle) {
	
	idDrawVert verts[4];
	glIndex_t indexes[6];
	indexes[0] = 3;
	indexes[1] = 0;
	indexes[2] = 2;
	indexes[3] = 2;
	indexes[4] = 0;
	indexes[5] = 1;
	verts[0].xyz[0] = x;
	verts[0].xyz[1] = y;
	verts[0].xyz[2] = 0;
	verts[0].st[0] = s1;
	verts[0].st[1] = t1;
	verts[0].normal[0] = 0;
	verts[0].normal[1] = 0;
	verts[0].normal[2] = 1;
	verts[0].tangents[0][0] = 1;
	verts[0].tangents[0][1] = 0;
	verts[0].tangents[0][2] = 0;
	verts[0].tangents[1][0] = 0;
	verts[0].tangents[1][1] = 1;
	verts[0].tangents[1][2] = 0;
	verts[1].xyz[0] = x + w;
	verts[1].xyz[1] = y;
	verts[1].xyz[2] = 0;
	verts[1].st[0] = s2;
	verts[1].st[1] = t1;
	verts[1].normal[0] = 0;
	verts[1].normal[1] = 0;
	verts[1].normal[2] = 1;
	verts[1].tangents[0][0] = 1;
	verts[1].tangents[0][1] = 0;
	verts[1].tangents[0][2] = 0;
	verts[1].tangents[1][0] = 0;
	verts[1].tangents[1][1] = 1;
	verts[1].tangents[1][2] = 0;
	verts[2].xyz[0] = x + w;
	verts[2].xyz[1] = y + h;
	verts[2].xyz[2] = 0;
	verts[2].st[0] = s2;
	verts[2].st[1] = t2;
	verts[2].normal[0] = 0;
	verts[2].normal[1] = 0;
	verts[2].normal[2] = 1;
	verts[2].tangents[0][0] = 1;
	verts[2].tangents[0][1] = 0;
	verts[2].tangents[0][2] = 0;
	verts[2].tangents[1][0] = 0;
	verts[2].tangents[1][1] = 1;
	verts[2].tangents[1][2] = 0;
	verts[3].xyz[0] = x;
	verts[3].xyz[1] = y + h;
	verts[3].xyz[2] = 0;
	verts[3].st[0] = s1;
	verts[3].st[1] = t2;
	verts[3].normal[0] = 0;
	verts[3].normal[1] = 0;
	verts[3].normal[2] = 1;
	verts[3].tangents[0][0] = 1;
	verts[3].tangents[0][1] = 0;
	verts[3].tangents[0][2] = 0;
	verts[3].tangents[1][0] = 0;
	verts[3].tangents[1][1] = 1;
	verts[3].tangents[1][2] = 0;

	bool ident = !mat.IsIdentity();
	if ( ident ) {
		verts[0].xyz -= origin;
		verts[0].xyz *= mat;
		verts[0].xyz += origin;
		verts[1].xyz -= origin;
		verts[1].xyz *= mat;
		verts[1].xyz += origin;
		verts[2].xyz -= origin;
		verts[2].xyz *= mat;
		verts[2].xyz += origin;
		verts[3].xyz -= origin;
		verts[3].xyz *= mat;
		verts[3].xyz += origin;
	}

	//Generate a translation so we can translate to the center of the image rotate and draw
	idVec3 origTrans;
	origTrans.x = x+(w/2);
	origTrans.y = y+(h/2);
	origTrans.z = 0;


	//Rotate the verts about the z axis before drawing them
	idMat4 rotz;
	rotz.Identity();
	float sinAng = idMath::Sin(angle);
	float cosAng = idMath::Cos(angle);
	rotz[0][0] = cosAng;
	rotz[0][1] = sinAng;
	rotz[1][0] = -sinAng;
	rotz[1][1] = cosAng;
	for(int i = 0; i < 4; i++) {
		//Translate to origin
		verts[i].xyz -= origTrans;

		//Rotate
		verts[i].xyz = rotz * verts[i].xyz;

		//Translate back
		verts[i].xyz += origTrans;
	}


	renderSystem->DrawStretchPic( &verts[0], &indexes[0], 4, 6, shader, (angle == 0.0) ? false : true );
}

void idDeviceContext::DrawFilledRect( float x, float y, float w, float h, const idVec4 &color) {

	if ( color.w == 0.0f ) {
		return;
	}

	renderSystem->SetColor(color);
	
	if (ClippedCoords(&x, &y, &w, &h, NULL, NULL, NULL, NULL)) {
		return;
	}

	AdjustCoords(&x, &y, &w, &h);
	DrawStretchPic( x, y, w, h, 0, 0, 0, 0, whiteImage);
}


void idDeviceContext::DrawRect( float x, float y, float w, float h, float size, const idVec4 &color) {

	if ( color.w == 0.0f ) {
		return;
	}

	renderSystem->SetColor(color);
	
	if (ClippedCoords(&x, &y, &w, &h, NULL, NULL, NULL, NULL)) {
		return;
	}

	AdjustCoords(&x, &y, &w, &h);
	DrawStretchPic( x, y, size, h, 0, 0, 0, 0, whiteImage );
	DrawStretchPic( x + w - size, y, size, h, 0, 0, 0, 0, whiteImage );
	DrawStretchPic( x, y, w, size, 0, 0, 0, 0, whiteImage );
	DrawStretchPic( x, y + h - size, w, size, 0, 0, 0, 0, whiteImage );
}

void idDeviceContext::DrawMaterialRect( float x, float y, float w, float h, float size, const idMaterial *mat, const idVec4 &color) {

	if ( color.w == 0.0f ) {
		return;
	}

	renderSystem->SetColor(color);
	DrawMaterial( x, y, size, h, mat, color );
	DrawMaterial( x + w - size, y, size, h, mat, color );
	DrawMaterial( x, y, w, size, mat, color );
	DrawMaterial( x, y + h - size, w, size, mat, color );
}


void idDeviceContext::SetCursor(int n) {
	cursor = (n < CURSOR_ARROW || n >= CURSOR_COUNT) ? CURSOR_ARROW : n;
}

void idDeviceContext::DrawCursor(float *x, float *y, float size) {
	if (*x < 0) {
		*x = 0;
	}

	if (*x >= vidWidth) {
		*x = vidWidth;
	}

	if (*y < 0) {
		*y = 0;
	}

	if (*y >= vidHeight) {
		*y = vidHeight;
	}

	renderSystem->SetColor(colorWhite);
	AdjustCoords(x, y, &size, &size);
	DrawStretchPic( *x, *y, size, size, 0, 0, 1, 1, cursorImages[cursor]);
}
/*
 =======================================================================================================================
 =======================================================================================================================
 */

void idDeviceContext::PaintChar(float x, float y, const scaledGlyphInfo_t &glyphInfo) {
	y -= glyphInfo.top;
	x += glyphInfo.left;

	float w = glyphInfo.width;
	float h = glyphInfo.height;
	float s = glyphInfo.s1;
	float t = glyphInfo.t1;
	float s2 = glyphInfo.s2;
	float t2 = glyphInfo.t2;
	const idMaterial *hShader = glyphInfo.material;

	if (ClippedCoords(&x, &y, &w, &h, &s, &t, &s2, &t2)) {
		return;
	}

	DrawStretchPic(x, y, w, h, s, t, s2, t2, hShader);
}

int idDeviceContext::DrawText(float x, float y, float scale, idVec4 color, const char *text, float adjust, int limit, int style, int cursor) {
	idVec4 newColor;

	idStr drawText = text ? text : "";
	int charIndex = 0;
	int count = 0;

	if ( text && color.w != 0.0f && activeFont != NULL ) {
		renderSystem->SetColor(color);
		memcpy(&newColor[0], &color[0], sizeof(idVec4));
		int len = drawText.Length();
		if (limit > 0 && len > limit) {
			len = limit;
		}

		float prevGlyphSkip = 0.0f;

		while ( charIndex < len ) {
			if ( idStr::IsColor( drawText.c_str() + charIndex ) ) {
				if ( drawText[ charIndex + 1 ] == C_COLOR_DEFAULT ) {
					newColor = color;
				} else {
					newColor = idStr::ColorForIndex( drawText[ charIndex + 1 ] );
					newColor[3] = color[3];
				}
				if (cursor == charIndex || cursor == charIndex + 1) {
					float backup = 0.0f;
					if ( prevGlyphSkip > 0.0f ) {
						backup = ( prevGlyphSkip + adjust) / 5.0f;
					}
					if ( cursor == charIndex ) {
						backup *= 2.0f;
					} else {
						renderSystem->SetColor(newColor);
					}
					DrawEditCursor(x - backup, y, scale);
				}
				renderSystem->SetColor(newColor);
				charIndex += 2;
				count += 2;
				continue;
			}

			int glyphStart = charIndex;
			uint32_t textChar = DC_ReadUTF8Char( drawText.c_str(), charIndex );
			scaledGlyphInfo_t glyphInfo;
			activeFont->GetScaledGlyph( scale, textChar, glyphInfo );
			prevGlyphSkip = glyphInfo.xSkip;

			PaintChar( x, y, glyphInfo );

			if (cursor == glyphStart) {
				DrawEditCursor(x, y, scale);
			}
			x += glyphInfo.xSkip + adjust;
			count += charIndex - glyphStart;
		}
		if (cursor == len) {
			DrawEditCursor(x, y, scale);
		}
	}
	return count;
}

void idDeviceContext::SetSize(float width, float height) {
	vidWidth = VIRTUAL_WIDTH;
	vidHeight = VIRTUAL_HEIGHT;
	xScale = yScale = 0.0f;
	if ( width != 0.0f && height != 0.0f ) {
		xScale = vidWidth * ( 1.0f / width );
		yScale = vidHeight * ( 1.0f / height );
	}
}

int idDeviceContext::CharWidth( const char c, float scale ) {
	return activeFont == NULL ? 0 : idMath::Ftoi( activeFont->GetGlyphWidth( scale, (const unsigned char)c ) );
}

int idDeviceContext::TextWidth( const char *text, float scale, int limit ) {
	if ( text == NULL || activeFont == NULL ) {
		return 0;
	}

	int i;
	float width = 0.0f;
	if ( limit > 0 ) {
		for ( i = 0; text[i] != '\0' && i < limit; i++ ) {
			if ( idStr::IsColor( text + i ) ) {
				i++;
			} else {
				width += activeFont->GetGlyphWidth( scale, ((const unsigned char *)text)[i] );
			}
		}
	} else {
		for ( i = 0; text[i] != '\0'; i++ ) {
			if ( idStr::IsColor( text + i ) ) {
				i++;
			} else {
				width += activeFont->GetGlyphWidth( scale, ((const unsigned char *)text)[i] );
			}
		}
	}
	return idMath::Ftoi( width );
}

int idDeviceContext::TextHeight(const char *text, float scale, int limit) {
	return activeFont == NULL ? 0 : idMath::Ftoi( activeFont->GetLineHeight( scale ) );
}

int idDeviceContext::MaxCharWidth(float scale) {
	return activeFont == NULL ? 0 : idMath::Ftoi( activeFont->GetMaxCharWidth( scale ) );
}

int idDeviceContext::MaxCharHeight(float scale) {
	return activeFont == NULL ? 0 : idMath::Ftoi( activeFont->GetLineHeight( scale ) );
}

const idMaterial *idDeviceContext::GetScrollBarImage(int index) {
	if (index >= SCROLLBAR_HBACK && index < SCROLLBAR_COUNT) {
		return scrollBarImages[index];
	}
	return scrollBarImages[SCROLLBAR_HBACK];
}

// this only supports left aligned text
idRegion *idDeviceContext::GetTextRegion(const char *text, float textScale, idRectangle rectDraw, float xStart, float yStart) {
#if 0
	const char	*p, *textPtr, *newLinePtr;
	char		buff[1024];
	int			len, textWidth, newLine, newLineWidth;
	float		y;

	float charSkip = MaxCharWidth(textScale) + 1;
	float lineSkip = MaxCharHeight(textScale);

	textWidth = 0;
	newLinePtr = NULL;
#endif
	return NULL;
/*
	if (text == NULL) {
		return;
	}

	textPtr = text;
	if (*textPtr == '\0') {
		return;
	}

	y = lineSkip + rectDraw.y + yStart; 
	len = 0;
	buff[0] = '\0';
	newLine = 0;
	newLineWidth = 0;
	p = textPtr;

	textWidth = 0;
	while (p) {
		if (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\0') {
			newLine = len;
			newLinePtr = p + 1;
			newLineWidth = textWidth;
		}

		if ((newLine && textWidth > rectDraw.w) || *p == '\n' || *p == '\0') {
			if (len) {

				float x = rectDraw.x ;
				
				buff[newLine] = '\0';
				DrawText(x, y, textScale, color, buff, 0, 0, 0);
				if (!wrap) {
					return;
				}
			}

			if (*p == '\0') {
				break;
			}

			y += lineSkip + 5;
			p = newLinePtr;
			len = 0;
			newLine = 0;
			newLineWidth = 0;
			continue;
		}

		buff[len++] = *p++;
		buff[len] = '\0';
		textWidth = TextWidth( buff, textScale, -1 );
	}
*/
}

void idDeviceContext::DrawEditCursor( float x, float y, float scale ) {
	if ( (int)( com_ticNumber >> 4 ) & 1 ) {
		return;
	}
	if ( activeFont == NULL ) {
		return;
	}
	char cursorChar = (overStrikeMode) ? '_' : '|';
	scaledGlyphInfo_t glyphInfo;
	activeFont->GetScaledGlyph(scale, cursorChar, glyphInfo);
	PaintChar(x, y, glyphInfo);
}

int idDeviceContext::DrawText( const char *text, float textScale, int textAlign, idVec4 color, idRectangle rectDraw, bool wrap, int cursor, bool calcOnly, idList<int> *breaks, int limit ) {
	const char	*p, *textPtr, *newLinePtr;
	char		buff[1024];
	int			len, newLine, newLineWidth, count;
	float		y;
	float		textWidth;

	float		charSkip = MaxCharWidth( textScale ) + 1;
	float		lineSkip = MaxCharHeight( textScale );

	float		cursorSkip = ( cursor >= 0 ? charSkip : 0 );

	bool		lineBreak, wordBreak;

	textWidth = 0;
	newLinePtr = NULL;

	if (!calcOnly && !(text && *text)) {
		if (cursor == 0) {
			renderSystem->SetColor(color);
			DrawEditCursor(rectDraw.x, lineSkip + rectDraw.y, textScale);
		}
		return idMath::FtoiFast( rectDraw.w / charSkip );
	}

	textPtr = text;

	y = lineSkip + rectDraw.y; 
	len = 0;
	buff[0] = '\0';
	newLine = 0;
	newLineWidth = 0;
	p = textPtr;

	if ( breaks ) {
		breaks->Append(0);
	}
	count = 0;
	textWidth = 0;
	lineBreak = false;
	wordBreak = false;
	while (p) {

		if ( *p == '\n' || *p == '\r' || *p == '\0' ) {
			lineBreak = true;
			if ((*p == '\n' && *(p + 1) == '\r') || (*p == '\r' && *(p + 1) == '\n')) {
				p++;
			}
		}

		int nextCharWidth = ( idStr::CharIsPrintable(*p) ? CharWidth( *p, textScale ) : cursorSkip );
		// FIXME: this is a temp hack until the guis can be fixed not not overflow the bounding rectangles
		//		  the side-effect is that list boxes and edit boxes will draw over their scroll bars
		//	The following line and the !linebreak in the if statement below should be removed
		nextCharWidth = 0;

		if ( !lineBreak && ( textWidth + nextCharWidth ) > rectDraw.w ) {
			// The next character will cause us to overflow, if we haven't yet found a suitable
			// break spot, set it to be this character
			if ( len > 0 && newLine == 0 ) {
				newLine = len;
				newLinePtr = p;
				newLineWidth = textWidth;
			}
			wordBreak = true;
		} else if ( lineBreak || ( wrap && (*p == ' ' || *p == '\t') ) ) {
			// The next character is in view, so if we are a break character, store our position
			newLine = len;
			newLinePtr = p + 1;
			newLineWidth = textWidth;
		}

		if ( lineBreak || wordBreak ) {
			float x = rectDraw.x;

			if (textAlign == ALIGN_RIGHT) {
				x = rectDraw.x + rectDraw.w - newLineWidth;
			} else if (textAlign == ALIGN_CENTER) {
				x = rectDraw.x + (rectDraw.w - newLineWidth) / 2;
			}

			if ( wrap || newLine > 0 ) {
				buff[newLine] = '\0';

				// This is a special case to handle breaking in the middle of a word.
				// if we didn't do this, the cursor would appear on the end of this line
				// and the beginning of the next.
				if ( wordBreak && cursor >= newLine && newLine == len ) {
					cursor++;
				}
			}

			if (!calcOnly) {
				count += DrawText(x, y, textScale, color, buff, 0, 0, 0, cursor);
			}

			if ( cursor < newLine ) {
				cursor = -1;
			} else if ( cursor >= 0 ) {
				cursor -= ( newLine + 1 );
			}

			if ( !wrap ) {
				return newLine;
			}

			if ( ( limit && count > limit ) || *p == '\0' ) {
				break;
			}

			y += lineSkip + 5;

			if ( !calcOnly && y > rectDraw.Bottom() ) {
				break;
			}

			p = newLinePtr;

			if (breaks) {
				breaks->Append(p - text);
			}

			len = 0;
			newLine = 0;
			newLineWidth = 0;
			textWidth = 0;
			lineBreak = false;
			wordBreak = false;
			continue;
		}

		buff[len++] = *p++;
		buff[len] = '\0';
		// update the width
		if ( *( buff + len - 1 ) != C_COLOR_ESCAPE && (len <= 1 || *( buff + len - 2 ) != C_COLOR_ESCAPE)) {
			textWidth += activeFont != NULL ? activeFont->GetGlyphWidth( textScale, (const unsigned char)*( buff + len - 1 ) ) : 0.0f;
		}
	}

	return idMath::FtoiFast( rectDraw.w / charSkip );
}

/*
=============
idRectangle::String
=============
*/
char *idRectangle::String( void ) const {
	static	int		index = 0;
	static	char	str[ 8 ][ 48 ];
	char	*s;

	// use an array so that multiple toString's won't collide
	s = str[ index ];
	index = (index + 1)&7;

	sprintf( s, "%.2f %.2f %.2f %.2f", x, y, w, h );

	return s;
}