/* $Id$ * $URL$ * * new style X11 Driver for LCD4Linux * * Copyright (C) 2003 Michael Reinelt * Copyright (C) 2004 The LCD4Linux Team * * based on the old XWindow.c which is * Copyright (C) 2000 Herbert Rosmanith * * This file is part of LCD4Linux. * * LCD4Linux 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, or (at your option) * any later version. * * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * * exported fuctions: * * struct DRIVER drv_X11 * */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #include "debug.h" #include "cfg.h" #include "qprintf.h" #include "timer.h" #include "plugin.h" #include "drv.h" #include "drv_generic_graphic.h" #ifdef WITH_DMALLOC #include #endif static char Name[] = "X11"; static int pixel = -1; /* pointsize in pixel */ static int pgap = 0; /* gap between points */ static int rgap = 0; /* row gap between lines */ static int cgap = 0; /* column gap between characters */ static int border = 0; /* window border */ static int dimx, dimy; /* total window dimension in pixel */ static RGBA *drv_X11_FB = NULL; static Display *dp; static int sc, dd; static Window w, rw; static Visual *vi; static GC gc; static Colormap cm; static XColor xc; static Pixmap pm; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ static void drv_X11_color(RGBA c) { xc.red = 255 * c.R; xc.green = 255 * c.G; xc.blue = 255 * c.B; xc.flags = DoRed | DoGreen | DoBlue; if (XAllocColor(dp, cm, &xc) == False) { error("%s: XAllocColor(%02x%02x%02x) failed!", Name, c.R, c.G, c.B); } XSetForeground(dp, gc, xc.pixel); XSetBackground(dp, gc, xc.pixel); } static void drv_X11_blit(const int row, const int col, const int height, const int width) { int r, c; int dirty = 0; for (r = row; r < row + height; r++) { int y = border + (r / YRES) * rgap + r * (pixel + pgap); for (c = col; c < col + width; c++) { int x = border + (c / XRES) * cgap + c * (pixel + pgap); RGBA p1 = drv_X11_FB[r * DCOLS + c]; RGBA p2 = drv_generic_graphic_rgb(r, c); if (p1.R != p2.R || p1.G != p2.G || p1.B != p2.B) { drv_X11_color(p2); XFillRectangle(dp, w, gc, x, y, pixel, pixel); drv_X11_FB[r * DCOLS + c] = p2; dirty = 1; } } } if (dirty) { XSync(dp, False); } } static void drv_X11_expose(const int x, const int y, const int width, const int height) { /* * theory of operation: * instead of the old, fully-featured but complicated update * region calculation, we do an update of the whole display, * but check before every pixel if the pixel region is inside * the update region. */ int r, c; int x0, y0; int x1, y1; x0 = x - pixel; x1 = x + pixel + width; y0 = y - pixel; y1 = y + pixel + height; for (r = 0; r < DROWS; r++) { int yc = border + (r / YRES) * rgap + r * (pixel + pgap); if (yc < y0 || yc > y1)

Copyright (C) 1991, 1993, 1994 Glenn Chappell and Ian Chai
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001 John Cowan
Copyright (C) 2002 Christiaan Keet
Copyright (C) 2011 Claudio Matsuoka
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