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Diffstat (limited to 'uirdesktop/bsops.c')
| -rwxr-xr-x | uirdesktop/bsops.c | 833 |
1 files changed, 0 insertions, 833 deletions
diff --git a/uirdesktop/bsops.c b/uirdesktop/bsops.c deleted file mode 100755 index 310c9211..00000000 --- a/uirdesktop/bsops.c +++ /dev/null @@ -1,833 +0,0 @@ -/* -*- c-basic-offset: 8 -*- - rdesktop: A Remote Desktop Protocol client. - Generics backingstore operations - Copyright (C) Jay Sorg 2005-2006 - - 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., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include <stdlib.h> -#include <string.h> -#include "bsops.h" - -/* externals */ -extern int g_width; -extern int g_height; -extern int g_bs_bpp; -extern int g_bs_Bpp; -extern char * g_bs; - -/* globals */ -static int g_clip_left = 0; -static int g_clip_top = 0; -static int g_clip_right = 800; -static int g_clip_bottom = 600; - -/* for bs_patblt */ -static unsigned char g_hatch_patterns[] = -{ - 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, /* 0 - bsHorizontal */ - 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, /* 1 - bsVertical */ - 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01, /* 2 - bsFDiagonal */ - 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, /* 3 - bsBDiagonal */ - 0x08, 0x08, 0x08, 0xff, 0x08, 0x08, 0x08, 0x08, /* 4 - bsCross */ - 0x81, 0x42, 0x24, 0x18, 0x18, 0x24, 0x42, 0x81 /* 5 - bsDiagCross */ -}; - - -/*****************************************************************************/ -/* do a raster op */ -int -bs_do_rop(int rop, int src, int dst) -{ - switch (rop) - { - case 0x0: return 0; - case 0x1: return ~(src | dst); - case 0x2: return (~src) & dst; - case 0x3: return ~src; - case 0x4: return src & (~dst); - case 0x5: return ~(dst); - case 0x6: return src ^ dst; - case 0x7: return ~(src & dst); - case 0x8: return src & dst; - case 0x9: return ~(src) ^ dst; - case 0xa: return dst; - case 0xb: return (~src) | dst; - case 0xc: return src; - case 0xd: return src | (~dst); - case 0xe: return src | dst; - case 0xf: return ~0; - } - return dst; -} - -/*****************************************************************************/ -/* get a pixel from the in memory copy of whats on the screen */ -int -bs_get_pixel(int x, int y) -{ - char * p; - - if (x >= 0 && x < g_width && y >= 0 && y < g_height) - { - p = g_bs + (y * g_width * g_bs_Bpp) + (x * g_bs_Bpp); - if (g_bs_Bpp == 1) - { - return *((unsigned char *) p); - } - else if (g_bs_Bpp == 2) - { - return *((unsigned short *) p); - } - else - { - return *((unsigned int *) p); - } - } - else - { - return 0; - } -} - -/*****************************************************************************/ -/* set a pixel on the screen using the clip */ -void -bs_set_pixel(int x, int y, int pixel, int rop, int use_clip) -{ - char * p; - - if (!use_clip || - (x >= g_clip_left && x < g_clip_right && - y >= g_clip_top && y < g_clip_bottom)) - { - if (x >= 0 && x < g_width && y >= 0 && y < g_height) - { - p = g_bs + (y * g_width * g_bs_Bpp) + (x * g_bs_Bpp); - if (rop != 12) - { - pixel = bs_do_rop(rop, pixel, bs_get_pixel(x, y)); - } - if (g_bs_Bpp == 1) - { - *((unsigned char *) p) = pixel; - } - else if (g_bs_Bpp == 2) - { - *((unsigned short *) p) = pixel; - } - else - { - *((unsigned int *) p) = pixel; - } - } - } -} - -/*****************************************************************************/ -static char * -get_bs_ptr(int x, int y) -{ - char * p; - - if (x >= 0 && x < g_width && y >= 0 && y < g_height) - { - p = g_bs + (y * g_width * g_bs_Bpp) + (x * g_bs_Bpp); - return p; - } - else - { - return 0; - } -} - -/*****************************************************************************/ -void -bs_init(void) -{ - g_clip_left = 0; - g_clip_top = 0; - g_clip_right = g_width; - g_clip_bottom = g_height; -} - -/*****************************************************************************/ -void -bs_exit(void) -{ -} - -/*****************************************************************************/ -void -bs_set_clip(int x, int y, int cx, int cy) -{ - g_clip_left = x; - g_clip_top = y; - g_clip_right = x + cx; - g_clip_bottom = y + cy; -} - -/*****************************************************************************/ -void -bs_reset_clip(void) -{ - g_clip_left = 0; - g_clip_top = 0; - g_clip_right = g_width; - g_clip_bottom = g_height; -} - -/*****************************************************************************/ -/* check if a certain pixel is set in a bitmap */ -int -bs_is_pixel_on(char * data, int x, int y, int width, int bpp) -{ - int start; - int shift; - - if (bpp == 1) - { - width = (width + 7) / 8; - start = (y * width) + x / 8; - shift = x % 8; - return (data[start] & (0x80 >> shift)) != 0; - } - else if (bpp == 8) - { - return data[y * width + x] != 0; - } - else if (bpp == 24) - { - return data[(y * 3) * width + (x * 3)] != 0 && - data[(y * 3) * width + (x * 3) + 1] != 0 && - data[(y * 3) * width + (x * 3) + 2] != 0; - } - else - { - return 0; - } -} - -/*****************************************************************************/ -void -bs_set_pixel_on(char * data, int x, int y, int width, int bpp, - int pixel) -{ - int start; - int shift; - - if (bpp == 1) - { - width = (width + 7) / 8; - start = (y * width) + x / 8; - shift = x % 8; - if (pixel != 0) - { - data[start] = data[start] | (0x80 >> shift); - } - else - { - data[start] = data[start] & ~(0x80 >> shift); - } - } - else if (bpp == 8) - { - data[y * width + x] = pixel; - } - else if (bpp == 15 || bpp == 16) - { - ((unsigned short *) data)[y * width + x] = pixel; - } -} - -/*****************************************************************************/ -void -bs_copy_mem(char * d, char * s, int n) -{ - while (n & (~7)) - { - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - *(d++) = *(s++); - n = n - 8; - } - while (n > 0) - { - *(d++) = *(s++); - n--; - } -} - -/*****************************************************************************/ -void -bs_copy_memb(char * d, char * s, int n) -{ - d = (d + n) - 1; - s = (s + n) - 1; - while (n & (~7)) - { - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - *(d--) = *(s--); - n = n - 8; - } - while (n > 0) - { - *(d--) = *(s--); - n--; - } -} - -/*****************************************************************************/ -/* return true is the is something to draw */ -int -bs_warp_coords(int * x, int * y, int * cx, int * cy, - int * srcx, int * srcy) -{ - int dx; - int dy; - - if (g_clip_left > *x) - { - dx = g_clip_left - *x; - } - else - { - dx = 0; - } - if (g_clip_top > *y) - { - dy = g_clip_top - *y; - } - else - { - dy = 0; - } - if (*x + *cx > g_clip_right) - { - *cx = (*cx - ((*x + *cx) - g_clip_right)); - } - if (*y + *cy > g_clip_bottom) - { - *cy = (*cy - ((*y + *cy) - g_clip_bottom)); - } - *cx = *cx - dx; - *cy = *cy - dy; - if (*cx <= 0) - { - return 0; - } - if (*cy <= 0) - { - return 0; - } - *x = *x + dx; - *y = *y + dy; - if (srcx != 0) - { - *srcx = *srcx + dx; - } - if (srcy != 0) - { - *srcy = *srcy + dy; - } - return 1; -} - -/*****************************************************************************/ -void -bs_rect(int x, int y, int cx, int cy, int colour, int rop) -{ - int i; - int j; - unsigned char * p8; - unsigned short * p16; - unsigned int * p32; - - if (bs_warp_coords(&x, &y, &cx, &cy, 0, 0)) - { - if (rop == 0) /* black */ - { - rop = 12; - colour = 0; - } - else if (rop == 15) /* white */ - { - rop = 12; - colour = 0xffffff; - } - if (rop == 12) /* copy */ - { - if (g_bs_Bpp == 1) - { - for (i = 0; i < cy; i++) - { - p8 = (unsigned char *) get_bs_ptr(x, y + i); - if (p8 != 0) - { - for (j = 0; j < cx; j++) - { - *p8 = colour; - p8++; - } - } - } - } - else if (g_bs_Bpp == 2) - { - for (i = 0; i < cy; i++) - { - p16 = (unsigned short *) get_bs_ptr(x, y + i); - if (p16 != 0) - { - for (j = 0; j < cx; j++) - { - *p16 = colour; - p16++; - } - } - } - } - else - { - for (i = 0; i < cy; i++) - { - p32 = (unsigned int *) get_bs_ptr(x, y + i); - if (p32 != 0) - { - for (j = 0; j < cx; j++) - { - *p32 = colour; - p32++; - } - } - } - } - } - else /* slow */ - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - bs_set_pixel(j + x, i + y, colour, rop, 0); - } - } - } - } -} - -/*****************************************************************************/ -void -bs_screenblt(int rop, int x, int y, int cx, int cy, - int srcx, int srcy) -{ - int p; - int i; - int j; - char * src; - char * dst; - - if (bs_warp_coords(&x, &y, &cx, &cy, &srcx, &srcy)) - { - if (rop == 12) /* copy */ - { - if (srcy < y) /* copy down - bottom to top */ - { - for (i = cy - 1; i >= 0; i--) - { - src = get_bs_ptr(srcx, srcy + i); - dst = get_bs_ptr(x, y + i); - if (src != 0 && dst != 0) - { - bs_copy_mem(dst, src, cx * g_bs_Bpp); - } - } - } - else if (srcy > y || srcx > x) /* copy up or left - top to bottom */ - { - for (i = 0; i < cy; i++) - { - src = get_bs_ptr(srcx, srcy + i); - dst = get_bs_ptr(x, y + i); - if (src != 0 && dst != 0) - { - bs_copy_mem(dst, src, cx * g_bs_Bpp); - } - } - } - else /* copy straight right */ - { - for (i = 0; i < cy; i++) - { - src = get_bs_ptr(srcx, srcy + i); - dst = get_bs_ptr(x, y + i); - if (src != 0 && dst != 0) - { - bs_copy_memb(dst, src, cx * g_bs_Bpp); - } - } - } - } - else /* slow */ - { - if (srcy < y) /* copy down - bottom to top */ - { - for (i = cy - 1; i >= 0; i--) - { - for (j = 0; j < cx; j++) - { - p = bs_get_pixel(srcx + j, srcy + i); - bs_set_pixel(x + j, y + i, p, rop, 0); - } - } - } - else if (srcy > y || srcx > x) /* copy up or left - top to bottom */ - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - p = bs_get_pixel(srcx + j, srcy + i); - bs_set_pixel(x + j, y + i, p, rop, 0); - } - } - } - else /* copy straight right */ - { - for (i = 0; i < cy; i++) - { - for (j = cx - 1; j >= 0; j--) - { - p = bs_get_pixel(srcx + j, srcy + i); - bs_set_pixel(x + j, y + i, p, rop, 0); - } - } - } - } - } -} - -/*****************************************************************************/ -int -bs_memblt(int opcode, int x, int y, int cx, int cy, - void * srcdata, int srcwidth, int srcheight, - int srcx, int srcy) -{ - int i; - int j; - int p; - int rv; - char * dst; - char * src; - - rv = 1; - if (bs_warp_coords(&x, &y, &cx, &cy, &srcx, &srcy)) - { - if (opcode == 12) /* copy */ - { - rv = 0; - if (g_bs_Bpp == 1) - { - src = (char *) (((unsigned char *) srcdata) + srcy * srcwidth + srcx); - } - else if (g_bs_Bpp == 2) - { - src = (char *) (((unsigned short *) srcdata) + srcy * srcwidth + srcx); - } - else - { - src = (char *) (((unsigned int *) srcdata) + srcy * srcwidth + srcx); - } - for (i = 0; i < cy; i++) - { - dst = get_bs_ptr(x, y + i); - if (dst != 0) - { - if (!rv) - { - if (memcmp(dst, src, cx * g_bs_Bpp) != 0) - { - rv = 1; - } - } - bs_copy_mem(dst, src, cx * g_bs_Bpp); - src += srcwidth * g_bs_Bpp; - } - } - } - else /* slow */ - { - if (g_bs_Bpp == 1) - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - p = *(((unsigned char *) srcdata) + - ((i + srcy) * srcwidth + (j + srcx))); - bs_set_pixel(x + j, y + i, p, opcode, 0); - } - } - } - else if (g_bs_Bpp == 2) - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - p = *(((unsigned short *) srcdata) + - ((i + srcy) * srcwidth + (j + srcx))); - bs_set_pixel(x + j, y + i, p, opcode, 0); - } - } - } - else - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - p = *(((unsigned int *) srcdata) + - ((i + srcy) * srcwidth + (j + srcx))); - bs_set_pixel(x + j, y + i, p, opcode, 0); - } - } - } - } - } - return rv; -} - -/*****************************************************************************/ -void -bs_draw_glyph(int x, int y, char * glyph_data, int glyph_width, - int glyph_height, int fgcolour) -{ - int i; - int j; - - for (i = 0; i < glyph_height; i++) - { - for (j = 0; j < glyph_width; j++) - { - if (bs_is_pixel_on(glyph_data, j, i, glyph_width, 8)) - { - bs_set_pixel(x + j, y + i, fgcolour, 12, 1); - } - } - } -} - -/*****************************************************************************/ -/* Bresenham's line drawing algorithm */ -void -bs_line(int opcode, int startx, int starty, int endx, int endy, - int pen_width, int pen_style, int pen_colour) -{ - int dx; - int dy; - int incx; - int incy; - int dpr; - int dpru; - int p; - - if (startx > endx) - { - dx = startx - endx; - incx = -1; - } - else - { - dx = endx - startx; - incx = 1; - } - if (starty > endy) - { - dy = starty - endy; - incy = -1; - } - else - { - dy = endy - starty; - incy = 1; - } - if (dx >= dy) - { - dpr = dy << 1; - dpru = dpr - (dx << 1); - p = dpr - dx; - for (; dx >= 0; dx--) - { - if (startx != endx || starty != endy) - { - bs_set_pixel(startx, starty, pen_colour, opcode, 1); - } - if (p > 0) - { - startx += incx; - starty += incy; - p += dpru; - } - else - { - startx += incx; - p += dpr; - } - } - } - else - { - dpr = dx << 1; - dpru = dpr - (dy << 1); - p = dpr - dy; - for (; dy >= 0; dy--) - { - if (startx != endx || starty != endy) - { - bs_set_pixel(startx, starty, pen_colour, opcode, 1); - } - if (p > 0) - { - startx += incx; - starty += incy; - p += dpru; - } - else - { - starty += incy; - p += dpr; - } - } - } -} - -/*****************************************************************************/ -void -bs_patblt(int opcode, int x, int y, int cx, int cy, - int brush_style, char * brush_pattern, - int brush_x_org, int brush_y_org, - int bgcolour, int fgcolour) -{ - int i; - int j; - char ipattern[8]; - char * b; - - b = 0; - switch (brush_style) - { - case 0: - bs_rect(x, y, cx, cy, fgcolour, opcode); - break; - case 2: /* Hatch */ - b = g_hatch_patterns + brush_pattern[0] * 8; - break; - case 3: - for (i = 0; i < 8; i++) - { - ipattern[i] = ~brush_pattern[7 - i]; - } - b = ipattern; - break; - } - if (b != 0) - { - for (i = 0; i < cy; i++) - { - for (j = 0; j < cx; j++) - { - if (bs_is_pixel_on(b, (x + j + brush_x_org) % 8, - (y + i + brush_y_org) % 8, 8, 1)) - { - bs_set_pixel(x + j, y + i, fgcolour, opcode, 1); - } - else - { - bs_set_pixel(x + j, y + i, bgcolour, opcode, 1); - } - } - } - } -} - -/*****************************************************************************/ -void -bs_copy_box(char * dst, int x, int y, int cx, int cy, int line_size) -{ - char * src; - int i; - - /* shouldn't happen */ - if (cx < 1 || cy < 1) - { - return; - } - /* nothing to draw, memset and leave */ - if (x + cx < 0 || y + cy < 0 || x >= g_width || y >= g_height) - { - memset(dst, 0, cx * cy * g_bs_Bpp); - return; - } - /* check if it goes over an edge */ - if (x < 0 || y < 0 || x + cx > g_width || y + cy > g_height) - { - memset(dst, 0, cx * cy * g_bs_Bpp); - if (x < 0) - { - cx += x; - dst += -x * g_bs_Bpp; - x = 0; - } - if (x + cx > g_width) - { - cx = g_width - x; - } - for (i = 0; i < cy; i++) - { - src = get_bs_ptr(x, y + i); - if (src != 0) - { - bs_copy_mem(dst, src, cx * g_bs_Bpp); - } - dst += line_size; - } - } - else /* whole box is within */ - { - for (i = 0; i < cy; i++) - { - src = get_bs_ptr(x, y + i); - if (src != 0) - { - bs_copy_mem(dst, src, cx * g_bs_Bpp); - } - dst += line_size; - } - } -} - |