A src/TextureRender.cc

@@ -0,0 +1,1751 @@ 
+// TextureRender.cc for fluxbox
+// Copyright (c) 2002 Henrik Kinnunen (fluxgen at fluxbox.org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: TextureRender.cc,v 1.1 2002/11/30 20:07:49 fluxgen Exp $
+
+#include "TextureRender.hh"
+
+#include "ImageControl.hh"
+#include "i18n.hh"
+#include "App.hh"
+
+TextureRender::TextureRender(BImageControl &imgctrl, unsigned int w, unsigned int h, 
+	XColor *_colors, size_t num_colors):
+control(imgctrl),
+colors(_colors),
+ncolors(ncolors),
+xtable(0), ytable(0) {
+
+	width = ((signed) w > 0) ? w : 1;
+	height = ((signed) h > 0) ? h : 1;
+
+	red = new unsigned char[width * height];
+	green = new unsigned char[width * height];
+	blue = new unsigned char[width * height];
+
+	cpc = imgctrl.colorsPerChannel();
+	cpccpc = cpc * cpc;
+
+	imgctrl.colorTables(&red_table, &green_table, &blue_table,
+		&red_offset, &green_offset, &blue_offset,
+		&red_bits, &green_bits, &blue_bits);
+	
+}
+
+
+TextureRender::~TextureRender() {
+	if (red) delete [] red;
+	if (green) delete [] green;
+	if (blue) delete [] blue;	
+}
+
+
+Pixmap TextureRender::render(const FbTk::Texture &texture) {
+
+	if (texture.type() & FbTk::Texture::PARENTRELATIVE)
+		return ParentRelative;
+	else if (texture.type() & FbTk::Texture::SOLID)
+		return renderSolid(texture);
+	else if (texture.type() & FbTk::Texture::GRADIENT)
+		return renderGradient(texture);
+
+	return None;
+}
+
+
+Pixmap TextureRender::renderSolid(const FbTk::Texture &texture) {
+
+	Display *disp = FbTk::App::instance()->display();
+
+	Pixmap pixmap = XCreatePixmap(disp,
+		RootWindow(disp, control.screenNum()), width,
+		height, control.depth());
+	if (pixmap == None) {
+		fprintf(stderr,
+			I18n::instance()->getMessage(
+				FBNLS::ImageSet, FBNLS::ImageErrorCreatingSolidPixmap,
+				"BImage::render_solid: error creating pixmap\n"));
+		return None;
+	}
+
+	XGCValues gcv;
+	GC gc, hgc, lgc;
+
+	gcv.foreground = texture.color().pixel();
+	gcv.fill_style = FillSolid;
+	gc = XCreateGC(disp, pixmap, GCForeground | GCFillStyle, &gcv);
+
+	gcv.foreground = texture.hiColor().pixel();
+	hgc = XCreateGC(disp, pixmap, GCForeground, &gcv);
+
+	gcv.foreground = texture.loColor().pixel();
+	lgc = XCreateGC(disp, pixmap, GCForeground, &gcv);
+
+	XFillRectangle(disp, pixmap, gc, 0, 0, width, height);
+	
+	using namespace FbTk;
+	
+	if (texture.type() & Texture::INTERLACED) {
+		gcv.foreground = texture.colorTo().pixel();
+		GC igc = XCreateGC(disp, pixmap,
+			GCForeground, &gcv);
+
+		register unsigned int i = 0;
+		for (; i < height; i += 2)
+			XDrawLine(disp, pixmap, igc, 0, i, width, i);
+
+		XFreeGC(disp, igc);
+	}
+
+	if (texture.type() & Texture::BEVEL1) {
+		if (texture.type() & Texture::RAISED) {
+			XDrawLine(disp, pixmap, lgc,
+				0, height - 1, width - 1, height - 1);
+			XDrawLine(disp, pixmap, lgc,
+				width - 1, height - 1, width - 1, 0);
+
+			XDrawLine(disp, pixmap, hgc,
+				0, 0, width - 1, 0);
+			XDrawLine(disp, pixmap, hgc,
+				0, height - 1, 0, 0);
+		} else if (texture.type() & Texture::SUNKEN) {
+			XDrawLine(disp, pixmap, hgc,
+				0, height - 1, width - 1, height - 1);
+			XDrawLine(disp, pixmap, hgc,
+				width - 1, height - 1, width - 1, 0);
+
+			XDrawLine(disp, pixmap, lgc,
+				0, 0, width - 1, 0);
+			XDrawLine(disp, pixmap, lgc,
+				0, height - 1, 0, 0);
+		}
+	} else if (texture.type() & Texture::BEVEL2) {
+		if (texture.type() & Texture::RAISED) {
+			XDrawLine(disp, pixmap, lgc,
+				1, height - 3, width - 3, height - 3);
+			XDrawLine(disp, pixmap, lgc,
+				width - 3, height - 3, width - 3, 1);
+
+			XDrawLine(disp, pixmap, hgc,
+				1, 1, width - 3, 1);
+			XDrawLine(disp, pixmap, hgc,
+				1, height - 3, 1, 1);
+		} else if (texture.type() & Texture::SUNKEN) {
+			XDrawLine(disp, pixmap, hgc,
+				1, height - 3, width - 3, height - 3);
+			XDrawLine(disp, pixmap, hgc,
+				width - 3, height - 3, width - 3, 1);
+
+			XDrawLine(disp, pixmap, lgc,
+				1, 1, width - 3, 1);
+			XDrawLine(disp, pixmap, lgc,
+				1, height - 3, 1, 1);
+		}
+	}
+
+	XFreeGC(disp, gc);
+	XFreeGC(disp, hgc);
+	XFreeGC(disp, lgc);
+
+	return pixmap;
+}
+
+
+Pixmap TextureRender::renderGradient(const FbTk::Texture &texture) {
+
+	bool inverted = false;
+
+	using namespace FbTk;
+
+	interlaced = texture.type() & Texture::INTERLACED;
+
+	if (texture.type() & Texture::SUNKEN) {
+		from = &(texture.colorTo());
+		to = &(texture.color());
+
+		if (! (texture.type() & Texture::INVERT)) 
+			inverted = true;
+	} else {
+		from = &(texture.color());
+		to = &(texture.colorTo());
+
+		if (texture.type() & Texture::INVERT) 
+			inverted = true;
+	}
+
+	control.getGradientBuffers(width, height, &xtable, &ytable);
+
+	if (texture.type() & Texture::DIAGONAL) 
+		dgradient();
+	else if (texture.type() & Texture::ELLIPTIC) 
+		egradient();
+	else if (texture.type() & Texture::HORIZONTAL) 
+		hgradient();
+	else if (texture.type() & Texture::PYRAMID) 
+		pgradient();
+	else if (texture.type() & Texture::RECTANGLE) 
+		rgradient();
+	else if (texture.type() & Texture::VERTICAL) 
+		vgradient();
+	else if (texture.type() & Texture::CROSSDIAGONAL) 
+		cdgradient();
+	else if (texture.type() & Texture::PIPECROSS) 
+		pcgradient();
+
+	if (texture.type() & Texture::BEVEL1)
+		bevel1();
+	else if (texture.type() & Texture::BEVEL2)
+		bevel2();
+
+	if (inverted)
+		invert();
+
+	return renderPixmap();
+
+}
+
+
+XImage *TextureRender::renderXImage() {
+	I18n *i18n = I18n::instance();
+	Display *disp = FbTk::App::instance()->display();
+	XImage *image =
+		XCreateImage(disp,
+			 DefaultVisual(disp, control.screenNum()), control.depth(), ZPixmap, 0, 0,
+			 width, height, 32, 0);
+
+	if (! image) {
+		fprintf(stderr,
+			i18n->
+			getMessage(
+				 FBNLS::ImageSet, FBNLS::ImageErrorCreatingXImage,
+				 "BImage::renderXImage: error creating XImage\n"));
+		return 0;
+	}
+
+	image->data = 0;
+
+	unsigned char *d = new unsigned char[image->bytes_per_line * (height + 1)];
+	register unsigned int x, y, dithx, dithy, r, g, b, o, er, eg, eb, offset;
+
+	unsigned char *pixel_data = d, *ppixel_data = d;
+	unsigned long pixel;
+
+	o = image->bits_per_pixel + ((image->byte_order == MSBFirst) ? 1 : 0);
+
+	if (control.doDither() && width > 1 && height > 1) {
+		unsigned char dither4[4][4] = { 
+			{0, 4, 1, 5},
+			{6, 2, 7, 3},
+			{1, 5, 0, 4},
+			{7, 3, 6, 2} };
+
+#ifdef ORDEREDPSEUDO
+		unsigned char dither8[8][8] = { 
+			{ 0, 32,  8, 40, 2,	34, 10, 42 },
+			{ 48, 16, 56, 24, 50, 18, 58, 26 },
+			{ 12, 44,  4, 36, 14, 46, 6, 38 },
+			{ 60, 28, 52, 20, 62, 30, 54, 22 },
+			{ 3, 35, 11, 43, 1,	33, 9, 41 },
+			{ 51, 19, 59, 27, 49, 17, 57, 25 },
+			{ 15, 47,  7, 39, 13, 45, 5, 37 },
+			{ 63, 31, 55, 23, 61, 29, 53, 21 } };
+#endif // ORDEREDPSEUDO
+
+		switch (control.visual()->c_class) {
+		case TrueColor:
+			// algorithm: ordered dithering... many many thanks to rasterman
+			// (raster@rasterman.com) for telling me about this... portions of this
+			// code is based off of his code in Imlib
+			for (y = 0, offset = 0; y < height; y++) {
+				dithy = y & 0x3;
+
+				for (x = 0; x < width; x++, offset++) {
+					dithx = x & 0x3;
+					r = red[offset];
+					g = green[offset];
+					b = blue[offset];
+
+					er = r & (red_bits - 1);
+					eg = g & (green_bits - 1);
+					eb = b & (blue_bits - 1);
+
+					r = red_table[r];
+					g = green_table[g];
+					b = blue_table[b];
+
+					if ((dither4[dithy][dithx] < er) && (r < red_table[255])) r++;
+					if ((dither4[dithy][dithx] < eg) && (g < green_table[255])) g++;
+					if ((dither4[dithy][dithx] < eb) && (b < blue_table[255])) b++;
+
+					pixel = (r << red_offset) | (g << green_offset) | (b << blue_offset);
+
+					switch (o) {
+					case	8: //	8bpp
+						*pixel_data++ = pixel;
+					break;
+
+					case 16: // 16bpp LSB
+						*pixel_data++ = pixel;
+						*pixel_data++ = pixel >> 8;
+					break;
+
+					case 17: // 16bpp MSB
+						*pixel_data++ = pixel >> 8;
+						*pixel_data++ = pixel;
+					break;
+
+					case 24: // 24bpp LSB
+						*pixel_data++ = pixel;
+						*pixel_data++ = pixel >> 8;
+						*pixel_data++ = pixel >> 16;
+					break;
+
+					case 25: // 24bpp MSB
+						*pixel_data++ = pixel >> 16;
+						*pixel_data++ = pixel >> 8;
+						*pixel_data++ = pixel;
+					break;
+
+					case 32: // 32bpp LSB
+						*pixel_data++ = pixel;
+						*pixel_data++ = pixel >> 8;
+						*pixel_data++ = pixel >> 16;
+						*pixel_data++ = pixel >> 24;
+					break;
+
+					case 33: // 32bpp MSB
+						*pixel_data++ = pixel >> 24;
+						*pixel_data++ = pixel >> 16;
+						*pixel_data++ = pixel >> 8;
+						*pixel_data++ = pixel;
+					break;
+					}
+				}
+
+				pixel_data = (ppixel_data += image->bytes_per_line);
+			}
+
+		break;
+
+		case StaticColor:
+		case PseudoColor: {
+#ifndef	 ORDEREDPSEUDO
+			short *terr,
+			*rerr = new short[width + 2],
+			*gerr = new short[width + 2],
+			*berr = new short[width + 2],
+			*nrerr = new short[width + 2],
+			*ngerr = new short[width + 2],
+			*nberr = new short[width + 2];
+			int rr, gg, bb, rer, ger, ber;
+			int dd = 255 / control.colorsPerChannel();
+
+			for (x = 0; x < width; x++) {
+				*(rerr + x) = *(red + x);
+				*(gerr + x) = *(green + x);
+				*(berr + x) = *(blue + x);
+			}
+
+			*(rerr + x) = *(gerr + x) = *(berr + x) = 0;
+#endif // ORDEREDPSEUDO
+
+			for (y = 0, offset = 0; y < height; y++) {
+#ifdef		ORDEREDPSEUDO
+				dithy = y & 7;
+
+				for (x = 0; x < width; x++, offset++) {
+					dithx = x & 7;
+
+					r = red[offset];
+					g = green[offset];
+					b = blue[offset];
+
+					er = r & (red_bits - 1);
+					eg = g & (green_bits - 1);
+					eb = b & (blue_bits - 1);
+
+					r = red_table[r];
+					g = green_table[g];
+					b = blue_table[b];
+
+					if ((dither8[dithy][dithx] < er) && (r < red_table[255])) r++;
+					if ((dither8[dithy][dithx] < eg) && (g < green_table[255])) g++;
+					if ((dither8[dithy][dithx] < eb) && (b < blue_table[255])) b++;
+
+					pixel = (r * cpccpc) + (g * cpc) + b;
+					*(pixel_data++) = colors[pixel].pixel;
+				}
+
+				pixel_data = (ppixel_data += image->bytes_per_line);
+			}
+#else // !ORDEREDPSEUDO
+			if (y < (height - 1)) {
+				int i = offset + width;
+				for (x = 0; x < width; x++, i++) {
+					*(nrerr + x) = *(red + i);
+					*(ngerr + x) = *(green + i);
+					*(nberr + x) = *(blue + i);
+				}
+
+				*(nrerr + x) = *(red + (--i));
+				*(ngerr + x) = *(green + i);
+				*(nberr + x) = *(blue + i);
+			}
+
+			for (x = 0; x < width; x++) {
+				rr = rerr[x];
+				gg = gerr[x];
+				bb = berr[x];
+
+				if (rr > 255) rr = 255; else if (rr < 0) rr = 0;
+				if (gg > 255) gg = 255; else if (gg < 0) gg = 0;
+				if (bb > 255) bb = 255; else if (bb < 0) bb = 0;
+
+				r = red_table[rr];
+				g = green_table[gg];
+				b = blue_table[bb];
+
+				rer = rerr[x] - r*dd;
+				ger = gerr[x] - g*dd;
+				ber = berr[x] - b*dd;
+
+				pixel = (r * cpccpc) + (g * cpc) + b;
+				*pixel_data++ = colors[pixel].pixel;
+
+				r = rer >> 1;
+				g = ger >> 1;
+				b = ber >> 1;
+				rerr[x+1] += r;
+				gerr[x+1] += g;
+				berr[x+1] += b;
+				nrerr[x] += r;
+				ngerr[x] += g;
+				nberr[x] += b;
+			}
+
+			offset += width;
+
+			pixel_data = (ppixel_data += image->bytes_per_line);
+
+			terr = rerr;
+			rerr = nrerr;
+			nrerr = terr;
+
+			terr = gerr;
+			gerr = ngerr;
+			ngerr = terr;
+
+			terr = berr;
+			berr = nberr;
+			nberr = terr;
+		}
+
+		delete [] rerr;
+		delete [] gerr;
+		delete [] berr;
+		delete [] nrerr;
+		delete [] ngerr;
+		delete [] nberr;
+#endif // ORDEREDPSUEDO
+
+		} break;
+
+		/*
+			 case StaticGray:
+			 case GrayScale:
+			 for (y = 0, offset = 0; y < height; y++) {
+			 dithy = y & 0x3;
+
+			 for (x = 0; x < width; x++, offset++) {
+			 dithx = x & 0x3;
+
+			 r = *(red + offset);
+			 g = *(green + offset);
+			 b = *(blue + offset);
+
+			 er = r & 0x7;
+			 eg = g & 0x7;
+			 eb = b & 0x7;
+
+			 if ((dither[dithy][dithx] < er) && (r < (256 - 8)))
+			 r += 8;
+			 if ((dither[dithy][dithx] < (eg << 1)) && (g < (256 - 4)))
+			 g += 4;
+			 if ((dither[dithy][dithx] < eb) && (b < (256 - 8)))
+			 b += 8;
+
+			 r = *(red_table + r);
+			 g = *(green_table + g);
+			 b = *(blue_table + b);
+
+			 g = ((r * 30) + (g * 59) + (b * 11)) / 100;
+			 *pixel_data++ = colors[g].pixel;
+			 }
+
+			 pixel_data = (ppixel_data += image->bytes_per_line);
+			 }
+
+			 break;
+		*/
+
+		default:
+			fprintf(stderr,
+				i18n->
+				getMessage(
+					FBNLS::ImageSet, FBNLS::ImageUnsupVisual,
+					"BImage::renderXImage: unsupported visual\n"));
+			delete [] d;
+			XDestroyImage(image);
+			return (XImage *) 0;
+		}
+	} else {
+		switch (control.visual()->c_class) {
+		case StaticColor:
+		case PseudoColor:
+			for (y = 0, offset = 0; y < height; y++) {
+				for (x = 0; x < width; x++, offset++) {
+					r = red_table[red[offset]];
+					g = green_table[green[offset]];
+					b = blue_table[blue[offset]];
+
+					pixel = (r * cpccpc) + (g * cpc) + b;
+					*pixel_data++ = colors[pixel].pixel;
+				}
+
+				pixel_data = (ppixel_data += image->bytes_per_line);
+			}
+
+			break;
+
+	case TrueColor:
+		for (y = 0, offset = 0; y < height; y++) {
+			for (x = 0; x < width; x++, offset++) {
+				r = red_table[red[offset]];
+				g = green_table[green[offset]];
+				b = blue_table[blue[offset]];
+
+				pixel = (r << red_offset) | (g << green_offset) | (b << blue_offset);
+
+				switch (o) {
+				case	8: //	8bpp
+					*pixel_data++ = pixel;
+				break;
+
+				case 16: // 16bpp LSB
+					*pixel_data++ = pixel;
+					*pixel_data++ = pixel >> 8;
+				break;
+
+				case 17: // 16bpp MSB
+					*pixel_data++ = pixel >> 8;
+					*pixel_data++ = pixel;
+				break;
+
+				case 24: // 24bpp LSB
+					*pixel_data++ = pixel;
+					*pixel_data++ = pixel >> 8;
+					*pixel_data++ = pixel >> 16;
+				break;
+
+				case 25: // 24bpp MSB
+					*pixel_data++ = pixel >> 16;
+					*pixel_data++ = pixel >> 8;
+					*pixel_data++ = pixel;
+				break;
+
+				case 32: // 32bpp LSB
+					*pixel_data++ = pixel;
+					*pixel_data++ = pixel >> 8;
+					*pixel_data++ = pixel >> 16;
+					*pixel_data++ = pixel >> 24;
+				break;
+
+				case 33: // 32bpp MSB
+					*pixel_data++ = pixel >> 24;
+					*pixel_data++ = pixel >> 16;
+					*pixel_data++ = pixel >> 8;
+					*pixel_data++ = pixel;
+				break;
+				}
+			}
+
+			pixel_data = (ppixel_data += image->bytes_per_line);
+		}
+
+		break;
+
+	case StaticGray:
+	case GrayScale:
+		for (y = 0, offset = 0; y < height; y++) {
+			for (x = 0; x < width; x++, offset++) {
+				r = *(red_table + *(red + offset));
+				g = *(green_table + *(green + offset));
+				b = *(blue_table + *(blue + offset));
+
+				g = ((r * 30) + (g * 59) + (b * 11)) / 100;
+				*pixel_data++ = colors[g].pixel;
+			}
+
+			pixel_data = (ppixel_data += image->bytes_per_line);
+		}
+
+	break;
+
+	default:
+		fprintf(stderr,
+			i18n->
+			getMessage(
+				 FBNLS::ImageSet, FBNLS::ImageUnsupVisual,
+				 "BImage::renderXImage: unsupported visual\n"));
+		delete [] d;
+		XDestroyImage(image);
+		return (XImage *) 0;
+	}
+}
+
+	image->data = (char *) d;
+	return image;
+}
+
+
+Pixmap TextureRender::renderPixmap() {
+	Display *disp = FbTk::App::instance()->display();
+	I18n *i18n = I18n::instance();
+	Pixmap pixmap =
+		XCreatePixmap(disp,
+				RootWindow(disp, control.screenNum()), width, height, control.depth());
+
+	if (pixmap == None) {
+		fprintf(stderr,
+			i18n->getMessage(
+				 FBNLS::ImageSet, FBNLS::ImageErrorCreatingPixmap,
+				 "BImage::renderPixmap: error creating pixmap\n"));
+		return None;
+	}
+
+	XImage *image = renderXImage();
+
+	if (! image) {
+		XFreePixmap(disp, pixmap);
+		return None;
+	} else if (! image->data) {
+		XDestroyImage(image);
+		XFreePixmap(disp, pixmap);
+		return None;
+	}
+
+	XPutImage(disp, pixmap,
+			DefaultGC(disp, control.screenNum()),
+				image, 0, 0, 0, 0, width, height);
+
+	if (image->data != 0) {
+		delete [] image->data;
+		image->data = 0;
+	}
+
+	XDestroyImage(image);
+
+	return pixmap;
+}
+
+
+void TextureRender::bevel1() {
+	if (! (width > 2 && height > 2))
+		return;
+
+	unsigned char *pr = red, *pg = green, *pb = blue;
+
+	register unsigned char r, g, b, rr ,gg ,bb;
+	register unsigned int w = width, h = height - 1, wh = w * h;
+
+	while (--w) {
+		r = *pr;
+		rr = r + (r >> 1);
+		if (rr < r) rr = ~0;
+		g = *pg;
+		gg = g + (g >> 1);
+		if (gg < g) gg = ~0;
+		b = *pb;
+		bb = b + (b >> 1);
+		if (bb < b) bb = ~0;
+
+		*pr = rr;
+		*pg = gg;
+		*pb = bb;
+
+		r = *(pr + wh);
+		rr = (r >> 2) + (r >> 1);
+		if (rr > r) rr = 0;
+		g = *(pg + wh);
+		gg = (g >> 2) + (g >> 1);
+		if (gg > g) gg = 0;
+		b = *(pb + wh);
+		bb = (b >> 2) + (b >> 1);
+		if (bb > b) bb = 0;
+
+		*((pr++) + wh) = rr;
+		*((pg++) + wh) = gg;
+		*((pb++) + wh) = bb;
+	}
+
+	r = *pr;
+	rr = r + (r >> 1);
+	if (rr < r) rr = ~0;
+	g = *pg;
+	gg = g + (g >> 1);
+	if (gg < g) gg = ~0;
+	b = *pb;
+	bb = b + (b >> 1);
+	if (bb < b) bb = ~0;
+
+	*pr = rr;
+	*pg = gg;
+	*pb = bb;
+
+	r = *(pr + wh);
+	rr = (r >> 2) + (r >> 1);
+	if (rr > r) rr = 0;
+	g = *(pg + wh);
+	gg = (g >> 2) + (g >> 1);
+	if (gg > g) gg = 0;
+	b = *(pb + wh);
+	bb = (b >> 2) + (b >> 1);
+	if (bb > b) bb = 0;
+
+	*(pr + wh) = rr;
+	*(pg + wh) = gg;
+	*(pb + wh) = bb;
+
+	pr = red + width;
+	pg = green + width;
+	pb = blue + width;
+
+	while (--h) {
+		r = *pr;
+		rr = r + (r >> 1);
+		if (rr < r) rr = ~0;
+		g = *pg;
+		gg = g + (g >> 1);
+		if (gg < g) gg = ~0;
+		b = *pb;
+		bb = b + (b >> 1);
+		if (bb < b) bb = ~0;
+
+		*pr = rr;
+		*pg = gg;
+		*pb = bb;
+
+		pr += width - 1;
+		pg += width - 1;
+		pb += width - 1;
+
+		r = *pr;
+		rr = (r >> 2) + (r >> 1);
+		if (rr > r) rr = 0;
+		g = *pg;
+		gg = (g >> 2) + (g >> 1);
+		if (gg > g) gg = 0;
+		b = *pb;
+		bb = (b >> 2) + (b >> 1);
+		if (bb > b) bb = 0;
+
+		*(pr++) = rr;
+		*(pg++) = gg;
+		*(pb++) = bb;
+	}
+
+	r = *pr;
+	rr = r + (r >> 1);
+	if (rr < r) rr = ~0;
+	g = *pg;
+	gg = g + (g >> 1);
+	if (gg < g) gg = ~0;
+	b = *pb;
+	bb = b + (b >> 1);
+	if (bb < b) bb = ~0;
+
+	*pr = rr;
+	*pg = gg;
+	*pb = bb;
+
+	pr += width - 1;
+	pg += width - 1;
+	pb += width - 1;
+
+	r = *pr;
+	rr = (r >> 2) + (r >> 1);
+	if (rr > r) rr = 0;
+	g = *pg;
+	gg = (g >> 2) + (g >> 1);
+	if (gg > g) gg = 0;
+	b = *pb;
+	bb = (b >> 2) + (b >> 1);
+	if (bb > b) bb = 0;
+
+	*pr = rr;
+	*pg = gg;
+	*pb = bb;
+}
+
+
+void TextureRender::bevel2() {
+	if (! (width > 4 && height > 4))
+		return;
+
+	unsigned char r, g, b, rr ,gg ,bb, *pr = red + width + 1,
+		*pg = green + width + 1, *pb = blue + width + 1;
+	unsigned int w = width - 2, h = height - 1, wh = width * (height - 3);
+
+	while (--w) {
+		r = *pr;
+		rr = r + (r >> 1);
+		if (rr < r) rr = ~0;
+		g = *pg;
+		gg = g + (g >> 1);
+		if (gg < g) gg = ~0;
+		b = *pb;
+		bb = b + (b >> 1);
+		if (bb < b) bb = ~0;
+
+		*pr = rr;
+		*pg = gg;
+		*pb = bb;
+
+		r = *(pr + wh);
+		rr = (r >> 2) + (r >> 1);
+		if (rr > r) rr = 0;
+		g = *(pg + wh);
+		gg = (g >> 2) + (g >> 1);
+		if (gg > g) gg = 0;
+		b = *(pb + wh);
+		bb = (b >> 2) + (b >> 1);
+		if (bb > b) bb = 0;
+
+		*((pr++) + wh) = rr;
+		*((pg++) + wh) = gg;
+		*((pb++) + wh) = bb;
+	}
+
+	pr = red + width;
+	pg = green + width;
+	pb = blue + width;
+
+	while (--h) {
+		r = *pr;
+		rr = r + (r >> 1);
+		if (rr < r) rr = ~0;
+		g = *pg;
+		gg = g + (g >> 1);
+		if (gg < g) gg = ~0;
+		b = *pb;
+		bb = b + (b >> 1);
+		if (bb < b) bb = ~0;
+
+		*(++pr) = rr;
+		*(++pg) = gg;
+		*(++pb) = bb;
+
+		pr += width - 3;
+		pg += width - 3;
+		pb += width - 3;
+
+		r = *pr;
+		rr = (r >> 2) + (r >> 1);
+		if (rr > r) rr = 0;
+		g = *pg;
+		gg = (g >> 2) + (g >> 1);
+		if (gg > g) gg = 0;
+		b = *pb;
+		bb = (b >> 2) + (b >> 1);
+		if (bb > b) bb = 0;
+
+		*(pr++) = rr;
+		*(pg++) = gg;
+		*(pb++) = bb;
+
+		pr++; pg++; pb++;
+	}
+}
+
+
+void TextureRender::invert() {
+	register unsigned int i, j, wh = (width * height) - 1;
+	unsigned char tmp;
+
+	for (i = 0, j = wh; j > i; j--, i++) {
+		tmp = *(red + j);
+		*(red + j) = *(red + i);
+		*(red + i) = tmp;
+
+		tmp = *(green + j);
+		*(green + j) = *(green + i);
+		*(green + i) = tmp;
+
+		tmp = *(blue + j);
+		*(blue + j) = *(blue + i);
+		*(blue + i) = tmp;
+	}
+}
+
+
+void TextureRender::dgradient() {
+	// diagonal gradient code was written by Mike Cole <mike@mydot.com>
+	// modified for interlacing by Brad Hughes
+
+	float drx, dgx, dbx, dry, dgy, dby, yr = 0.0, yg = 0.0, yb = 0.0,
+		xr = (float) from->red(),
+		xg = (float) from->green(),
+		xb = (float) from->blue();
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int w = width * 2, h = height * 2;
+	unsigned int *xt = xtable, *yt = ytable;
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	// Create X table
+	drx /= w;
+	dgx /= w;
+	dbx /= w;
+
+	for (x = 0; x < width; x++) {
+		*(xt++) = (unsigned char) (xr);
+		*(xt++) = (unsigned char) (xg);
+		*(xt++) = (unsigned char) (xb);
+
+		xr += drx;
+		xg += dgx;
+		xb += dbx;
+	}
+
+	// Create Y table
+	dry /= h;
+	dgy /= h;
+	dby /= h;
+
+	for (y = 0; y < height; y++) {
+		*(yt++) = ((unsigned char) yr);
+		*(yt++) = ((unsigned char) yg);
+		*(yt++) = ((unsigned char) yb);
+
+		yr += dry;
+		yg += dgy;
+		yb += dby;
+	}
+
+	// Combine tables to create gradient
+
+
+	if (! interlaced) {
+
+
+		// normal dgradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = *(xt++) + *(yt);
+				*(pg++) = *(xt++) + *(yt + 1);
+				*(pb++) = *(xt++) + *(yt + 2);
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = *(xt++) + *(yt);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = *(xt++) + *(yt + 1);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = *(xt++) + *(yt + 2);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = *(xt++) + *(yt);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = *(xt++) + *(yt + 1);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = *(xt++) + *(yt + 2);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+
+}
+
+
+void TextureRender::hgradient() {
+	float drx, dgx, dbx,
+		xr = (float) from->red(),
+		xg = (float) from->green(),
+		xb = (float) from->blue();
+	unsigned char *pr = red, *pg = green, *pb = blue;
+
+	register unsigned int x, y;
+
+	drx = (float) (to->red() - from->red());
+	dgx = (float) (to->green() - from->green());
+	dbx = (float) (to->blue() - from->blue());
+
+	drx /= width;
+	dgx /= width;
+	dbx /= width;
+
+	if (interlaced && height > 2) {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (x = 0; x < width; x++, pr++, pg++, pb++) {
+			channel = (unsigned char) xr;
+			channel2 = (channel >> 1) + (channel >> 2);
+			if (channel2 > channel) channel2 = 0;
+			*pr = channel2;
+
+			channel = (unsigned char) xg;
+			channel2 = (channel >> 1) + (channel >> 2);
+			if (channel2 > channel) channel2 = 0;
+			*pg = channel2;
+
+			channel = (unsigned char) xb;
+			channel2 = (channel >> 1) + (channel >> 2);
+			if (channel2 > channel) channel2 = 0;
+			*pb = channel2;
+
+
+			channel = (unsigned char) xr;
+			channel2 = channel + (channel >> 3);
+			if (channel2 < channel) channel2 = ~0;
+			*(pr + width) = channel2;
+
+			channel = (unsigned char) xg;
+			channel2 = channel + (channel >> 3);
+			if (channel2 < channel) channel2 = ~0;
+			*(pg + width) = channel2;
+
+			channel = (unsigned char) xb;
+			channel2 = channel + (channel >> 3);
+			if (channel2 < channel) channel2 = ~0;
+			*(pb + width) = channel2;
+
+			xr += drx;
+			xg += dgx;
+			xb += dbx;
+		}
+
+		pr += width;
+		pg += width;
+		pb += width;
+
+		int offset;
+
+		for (y = 2; y < height; y++, pr += width, pg += width, pb += width) {
+			if (y & 1) offset = width; else offset = 0;
+
+			memcpy(pr, (red + offset), width);
+			memcpy(pg, (green + offset), width);
+			memcpy(pb, (blue + offset), width);
+		}
+	} else {
+
+		// normal hgradient
+		for (x = 0; x < width; x++) {
+			*(pr++) = (unsigned char) (xr);
+			*(pg++) = (unsigned char) (xg);
+			*(pb++) = (unsigned char) (xb);
+
+			xr += drx;
+			xg += dgx;
+			xb += dbx;
+		}
+
+		for (y = 1; y < height; y++, pr += width, pg += width, pb += width) {
+			memcpy(pr, red, width);
+			memcpy(pg, green, width);
+			memcpy(pb, blue, width);
+		}
+
+	}
+
+}
+
+
+void TextureRender::vgradient() {
+	float dry, dgy, dby,
+		yr = (float) from->red(),
+		yg = (float) from->green(),
+		yb = (float) from->blue();
+	unsigned char *pr = red, *pg = green, *pb = blue;
+
+	register unsigned int y;
+
+	dry = (float) (to->red() - from->red());
+	dgy = (float) (to->green() - from->green());
+	dby = (float) (to->blue() - from->blue());
+
+	dry /= height;
+	dgy /= height;
+	dby /= height;
+
+	if (interlaced) {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (y = 0; y < height; y++, pr += width, pg += width, pb += width) {
+			if (y & 1) {
+				channel = (unsigned char) yr;
+				channel2 = (channel >> 1) + (channel >> 2);
+				if (channel2 > channel) channel2 = 0;
+				memset(pr, channel2, width);
+
+				channel = (unsigned char) yg;
+				channel2 = (channel >> 1) + (channel >> 2);
+				if (channel2 > channel) channel2 = 0;
+				memset(pg, channel2, width);
+
+				channel = (unsigned char) yb;
+				channel2 = (channel >> 1) + (channel >> 2);
+				if (channel2 > channel) channel2 = 0;
+				memset(pb, channel2, width);
+			} else {
+				channel = (unsigned char) yr;
+				channel2 = channel + (channel >> 3);
+				if (channel2 < channel) channel2 = ~0;
+				memset(pr, channel2, width);
+
+				channel = (unsigned char) yg;
+				channel2 = channel + (channel >> 3);
+				if (channel2 < channel) channel2 = ~0;
+				memset(pg, channel2, width);
+
+				channel = (unsigned char) yb;
+				channel2 = channel + (channel >> 3);
+				if (channel2 < channel) channel2 = ~0;
+				memset(pb, channel2, width);
+			}
+
+			yr += dry;
+			yg += dgy;
+			yb += dby;
+		}
+	} else {
+
+		// normal vgradient
+		for (y = 0; y < height; y++, pr += width, pg += width, pb += width) {
+			memset(pr, (unsigned char) yr, width);
+			memset(pg, (unsigned char) yg, width);
+			memset(pb, (unsigned char) yb, width);
+
+			yr += dry;
+			yg += dgy;
+			yb += dby;
+		}
+	}
+
+
+}
+
+
+void TextureRender::pgradient() {
+	// pyramid gradient -	based on original dgradient, written by
+	// Mosfet (mosfet@kde.org)
+	// adapted from kde sources for Blackbox by Brad Hughes
+
+	float yr, yg, yb, drx, dgx, dbx, dry, dgy, dby,
+		xr, xg, xb;
+	int rsign, gsign, bsign;
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int tr = to->red(), tg = to->green(), tb = to->blue();
+	unsigned int *xt = xtable, *yt = ytable;
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	rsign = (drx < 0) ? -1 : 1;
+	gsign = (dgx < 0) ? -1 : 1;
+	bsign = (dbx < 0) ? -1 : 1;
+
+	xr = yr = (drx / 2);
+	xg = yg = (dgx / 2);
+	xb = yb = (dbx / 2);
+
+	// Create X table
+	drx /= width;
+	dgx /= width;
+	dbx /= width;
+
+	for (x = 0; x < width; x++) {
+		*(xt++) = (unsigned char) ((xr < 0) ? -xr : xr);
+		*(xt++) = (unsigned char) ((xg < 0) ? -xg : xg);
+		*(xt++) = (unsigned char) ((xb < 0) ? -xb : xb);
+
+		xr -= drx;
+		xg -= dgx;
+		xb -= dbx;
+	}
+
+	// Create Y table
+	dry /= height;
+	dgy /= height;
+	dby /= height;
+
+	for (y = 0; y < height; y++) {
+		*(yt++) = ((unsigned char) ((yr < 0) ? -yr : yr));
+		*(yt++) = ((unsigned char) ((yg < 0) ? -yg : yg));
+		*(yt++) = ((unsigned char) ((yb < 0) ? -yb : yb));
+
+		yr -= dry;
+		yg -= dgy;
+		yb -= dby;
+	}
+
+	// Combine tables to create gradient
+
+
+	if (! interlaced) {
+
+		// normal pgradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = (unsigned char) (tr - (rsign * (*(xt++) + *(yt))));
+				*(pg++) = (unsigned char) (tg - (gsign * (*(xt++) + *(yt + 1))));
+				*(pb++) = (unsigned char) (tb - (bsign * (*(xt++) + *(yt + 2))));
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = (unsigned char) (tr - (rsign * (*(xt++) + *(yt))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (gsign * (*(xt++) + *(yt + 1))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (bsign * (*(xt++) + *(yt + 2))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = (unsigned char) (tr - (rsign * (*(xt++) + *(yt))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (gsign * (*(xt++) + *(yt + 1))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (bsign * (*(xt++) + *(yt + 2))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+}
+
+
+void TextureRender::rgradient() {
+	// rectangle gradient -	based on original dgradient, written by
+	// Mosfet (mosfet@kde.org)
+	// adapted from kde sources for Blackbox by Brad Hughes
+
+	float drx, dgx, dbx, dry, dgy, dby, xr, xg, xb, yr, yg, yb;
+	int rsign, gsign, bsign;
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int tr = to->red(), tg = to->green(), tb = to->blue();
+	unsigned int *xt = xtable, *yt = ytable;
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	rsign = (drx < 0) ? -2 : 2;
+	gsign = (dgx < 0) ? -2 : 2;
+	bsign = (dbx < 0) ? -2 : 2;
+
+	xr = yr = (drx / 2);
+	xg = yg = (dgx / 2);
+	xb = yb = (dbx / 2);
+
+	// Create X table
+	drx /= width;
+	dgx /= width;
+	dbx /= width;
+
+	for (x = 0; x < width; x++) {
+		*(xt++) = (unsigned char) ((xr < 0) ? -xr : xr);
+		*(xt++) = (unsigned char) ((xg < 0) ? -xg : xg);
+		*(xt++) = (unsigned char) ((xb < 0) ? -xb : xb);
+
+		xr -= drx;
+		xg -= dgx;
+		xb -= dbx;
+	}
+
+	// Create Y table
+	dry /= height;
+	dgy /= height;
+	dby /= height;
+
+	for (y = 0; y < height; y++) {
+		*(yt++) = ((unsigned char) ((yr < 0) ? -yr : yr));
+		*(yt++) = ((unsigned char) ((yg < 0) ? -yg : yg));
+		*(yt++) = ((unsigned char) ((yb < 0) ? -yb : yb));
+
+		yr -= dry;
+		yg -= dgy;
+		yb -= dby;
+	}
+
+	// Combine tables to create gradient
+
+
+	if (! interlaced) {
+
+		// normal rgradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = (unsigned char) (tr - (rsign * std::max(*(xt++), *(yt))));
+				*(pg++) = (unsigned char) (tg - (gsign * std::max(*(xt++), *(yt + 1))));
+				*(pb++) = (unsigned char) (tb - (bsign * std::max(*(xt++), *(yt + 2))));
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = (unsigned char) (tr - (rsign * std::max(*(xt++), *(yt))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (gsign * std::max(*(xt++), *(yt + 1))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (bsign * std::max(*(xt++), *(yt + 2))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = (unsigned char) (tr - (rsign * std::max(*(xt++), *(yt))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (gsign * std::max(*(xt++), *(yt + 1))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (bsign * std::max(*(xt++), *(yt + 2))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+}
+
+
+void TextureRender::egradient() {
+	// elliptic gradient -	based on original dgradient, written by
+	// Mosfet (mosfet@kde.org)
+	// adapted from kde sources for Blackbox by Brad Hughes
+
+	float drx, dgx, dbx, dry, dgy, dby, yr, yg, yb, xr, xg, xb;
+	int rsign, gsign, bsign;
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int *xt = xtable, *yt = ytable;
+	unsigned int tr = (unsigned long) to->red(),
+		tg = (unsigned long) to->green(),
+		tb = (unsigned long) to->blue();
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	rsign = (drx < 0) ? -1 : 1;
+	gsign = (dgx < 0) ? -1 : 1;
+	bsign = (dbx < 0) ? -1 : 1;
+
+	xr = yr = (drx / 2);
+	xg = yg = (dgx / 2);
+	xb = yb = (dbx / 2);
+
+	// Create X table
+	drx /= width;
+	dgx /= width;
+	dbx /= width;
+
+	for (x = 0; x < width; x++) {
+		*(xt++) = (unsigned long) (xr * xr);
+		*(xt++) = (unsigned long) (xg * xg);
+		*(xt++) = (unsigned long) (xb * xb);
+
+		xr -= drx;
+		xg -= dgx;
+		xb -= dbx;
+	}
+
+	// Create Y table
+	dry /= height;
+	dgy /= height;
+	dby /= height;
+
+	for (y = 0; y < height; y++) {
+		*(yt++) = (unsigned long) (yr * yr);
+		*(yt++) = (unsigned long) (yg * yg);
+		*(yt++) = (unsigned long) (yb * yb);
+
+		yr -= dry;
+		yg -= dgy;
+		yb -= dby;
+	}
+
+	// Combine tables to create gradient
+	if (! interlaced) {
+		// normal egradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = (unsigned char)
+					(tr - (rsign * control.getSqrt(*(xt++) + *(yt))));
+				*(pg++) = (unsigned char)
+					(tg - (gsign * control.getSqrt(*(xt++) + *(yt + 1))));
+				*(pb++) = (unsigned char)
+					(tb - (bsign * control.getSqrt(*(xt++) + *(yt + 2))));
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = (unsigned char)
+						(tr - (rsign * control.getSqrt(*(xt++) + *(yt))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char)
+						(tg - (gsign * control.getSqrt(*(xt++) + *(yt + 1))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char)
+						(tb - (bsign * control.getSqrt(*(xt++) + *(yt + 2))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = (unsigned char)
+						(tr - (rsign * control.getSqrt(*(xt++) + *(yt))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char)
+					(tg - (gsign * control.getSqrt(*(xt++) + *(yt + 1))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char)
+						(tb - (bsign * control.getSqrt(*(xt++) + *(yt + 2))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+}
+
+
+void TextureRender::pcgradient() {
+	// pipe cross gradient -	based on original dgradient, written by
+	// Mosfet (mosfet@kde.org)
+	// adapted from kde sources for Blackbox by Brad Hughes
+
+	float drx, dgx, dbx, dry, dgy, dby, xr, xg, xb, yr, yg, yb;
+	int rsign, gsign, bsign;
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int *xt = xtable, *yt = ytable;
+	unsigned int tr = to->red(),
+		tg = to->green(),
+		tb = to->blue();
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	rsign = (drx < 0) ? -2 : 2;
+	gsign = (dgx < 0) ? -2 : 2;
+	bsign = (dbx < 0) ? -2 : 2;
+
+	xr = yr = (drx / 2);
+	xg = yg = (dgx / 2);
+	xb = yb = (dbx / 2);
+
+	// Create X table
+	drx /= width;
+	dgx /= width;
+	dbx /= width;
+
+	for (x = 0; x < width; x++) {
+		*(xt++) = (unsigned char) ((xr < 0) ? -xr : xr);
+		*(xt++) = (unsigned char) ((xg < 0) ? -xg : xg);
+		*(xt++) = (unsigned char) ((xb < 0) ? -xb : xb);
+
+		xr -= drx;
+		xg -= dgx;
+		xb -= dbx;
+	}
+
+	// Create Y table
+	dry /= height;
+	dgy /= height;
+	dby /= height;
+
+	for (y = 0; y < height; y++) {
+		*(yt++) = ((unsigned char) ((yr < 0) ? -yr : yr));
+		*(yt++) = ((unsigned char) ((yg < 0) ? -yg : yg));
+		*(yt++) = ((unsigned char) ((yb < 0) ? -yb : yb));
+
+		yr -= dry;
+		yg -= dgy;
+		yb -= dby;
+	}
+
+	// Combine tables to create gradient
+	if (! interlaced) {
+
+		// normal pcgradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = (unsigned char) (tr - (rsign * std::min(*(xt++), *(yt))));
+				*(pg++) = (unsigned char) (tg - (gsign * std::min(*(xt++), *(yt + 1))));
+				*(pb++) = (unsigned char) (tb - (bsign * std::min(*(xt++), *(yt + 2))));
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = (unsigned char) (tr - (rsign * std::min(*(xt++), *(yt))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (bsign * std::min(*(xt++), *(yt + 1))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (gsign * std::min(*(xt++), *(yt + 2))));
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = (unsigned char) (tr - (rsign * std::min(*(xt++), *(yt))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = (unsigned char) (tg - (gsign * std::min(*(xt++), *(yt + 1))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = (unsigned char) (tb - (bsign * std::min(*(xt++), *(yt + 2))));
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+}
+
+
+void TextureRender::cdgradient() {
+	// cross diagonal gradient -	based on original dgradient, written by
+	// Mosfet (mosfet@kde.org)
+	// adapted from kde sources for Blackbox by Brad Hughes
+
+	float drx, dgx, dbx, dry, dgy, dby, yr = 0.0, yg = 0.0, yb = 0.0,
+		xr = (float) from->red(),
+		xg = (float) from->green(),
+		xb = (float) from->blue();
+	unsigned char *pr = red, *pg = green, *pb = blue;
+	unsigned int w = width * 2, h = height * 2, *xt, *yt;
+
+	register unsigned int x, y;
+
+	dry = drx = (float) (to->red() - from->red());
+	dgy = dgx = (float) (to->green() - from->green());
+	dby = dbx = (float) (to->blue() - from->blue());
+
+	// Create X table
+	drx /= w;
+	dgx /= w;
+	dbx /= w;
+
+	for (xt = (xtable + (width * 3) - 1), x = 0; x < width; x++) {
+		*(xt--) = (unsigned char) xb;
+		*(xt--) = (unsigned char) xg;
+		*(xt--) = (unsigned char) xr;
+
+		xr += drx;
+		xg += dgx;
+		xb += dbx;
+	}
+
+	// Create Y table
+	dry /= h;
+	dgy /= h;
+	dby /= h;
+
+	for (yt = ytable, y = 0; y < height; y++) {
+		*(yt++) = (unsigned char) yr;
+		*(yt++) = (unsigned char) yg;
+		*(yt++) = (unsigned char) yb;
+
+		yr += dry;
+		yg += dgy;
+		yb += dby;
+	}
+
+	// Combine tables to create gradient
+
+	if (! interlaced) {
+		// normal cdgradient
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				*(pr++) = *(xt++) + *(yt);
+				*(pg++) = *(xt++) + *(yt + 1);
+				*(pb++) = *(xt++) + *(yt + 2);
+			}
+		}
+
+	} else {
+		// faked interlacing effect
+		unsigned char channel, channel2;
+
+		for (yt = ytable, y = 0; y < height; y++, yt += 3) {
+			for (xt = xtable, x = 0; x < width; x++) {
+				if (y & 1) {
+					channel = *(xt++) + *(yt);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pr++) = channel2;
+
+					channel = *(xt++) + *(yt + 1);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pg++) = channel2;
+
+					channel = *(xt++) + *(yt + 2);
+					channel2 = (channel >> 1) + (channel >> 2);
+					if (channel2 > channel) channel2 = 0;
+					*(pb++) = channel2;
+				} else {
+					channel = *(xt++) + *(yt);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pr++) = channel2;
+
+					channel = *(xt++) + *(yt + 1);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pg++) = channel2;
+
+					channel = *(xt++) + *(yt + 2);
+					channel2 = channel + (channel >> 3);
+					if (channel2 < channel) channel2 = ~0;
+					*(pb++) = channel2;
+				}
+			}
+		}
+	}
+
+}
+

A src/TextureRender.hh

@@ -0,0 +1,91 @@ 
+// TextureRender.hh for fluxbox
+// Copyright (c) 2002 Henrik Kinnunen (fluxgen at fluxbox.org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: TextureRender.hh,v 1.1 2002/11/30 20:07:49 fluxgen Exp $
+
+#ifndef TEXTURRENDER_HH
+#define TEXTURRENDER_HH
+
+#include "Texture.hh"
+
+#include <X11/Xlib.h>
+
+class BImageControl;
+
+/**
+	Renders texture to pixmap
+*/
+class TextureRender {
+public:
+	TextureRender(BImageControl &ic, unsigned int width, unsigned int height, 
+		XColor *_colors=0, size_t num_colors=0);
+	~TextureRender();
+	/// render to pixmap
+	Pixmap render(const FbTk::Texture &src_texture);
+	/// render solid texture to pixmap
+	Pixmap renderSolid(const FbTk::Texture &src_texture);
+	/// render gradient texture to pixmap
+	Pixmap renderGradient(const FbTk::Texture &src_texture);
+
+private:
+	/**
+		Render to pixmap
+		@return rendered pixmap
+	*/
+	Pixmap renderPixmap();
+	/**
+		Render to XImage
+		@returns allocated and rendered XImage, user is responsible to deallocate
+	*/
+	XImage *renderXImage();
+	/**
+		@name render functions
+	*/
+	//@{
+	void invert();
+	void bevel1();
+	void bevel2();
+	void dgradient();
+	void egradient();
+	void hgradient();
+	void pgradient();
+	void rgradient();
+	void vgradient();
+	void cdgradient();
+	void pcgradient();
+	//@}
+	void makeGradientBuffers();
+
+	BImageControl &control;
+	bool interlaced;
+
+	XColor *colors; // color table
+
+	const FbTk::Color *from, *to;
+	int red_offset, green_offset, blue_offset, red_bits, green_bits, blue_bits,
+		ncolors, cpc, cpccpc;
+	unsigned char *red, *green, *blue;
+	const unsigned char *red_table, *green_table, *blue_table;
+	unsigned int width, height;
+	unsigned int *xtable, *ytable;
+};
+
+#endif // TEXTURERENDER_HH