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Diffstat (limited to 'drv_generic_text.c')
| -rw-r--r-- | drv_generic_text.c | 1001 |
1 files changed, 1001 insertions, 0 deletions
diff --git a/drv_generic_text.c b/drv_generic_text.c new file mode 100644 index 0000000..b216be8 --- /dev/null +++ b/drv_generic_text.c @@ -0,0 +1,1001 @@ +/* $Id: drv_generic_text.c 840 2007-09-09 12:17:42Z michael $ + * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/drv_generic_text.c $ + * + * generic driver helper for text-based displays + * + * Copyright (C) 1999, 2000 Michael Reinelt <michael@reinelt.co.at> + * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> + * + * 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 variables: + * + * extern int CHARS, CHAR0; number of user-defineable characters, ASCII of first char + * extern int ICONS; number of user-defineable characters reserved for icons + * extern int GOTO_COST; number of bytes a goto command requires + * extern int INVALIDATE; re-send a modified userdefined char? + * + * + * these functions must be implemented by the real driver: + * + * void (*drv_generic_text_real_write)(int row, int col, unsigned char *data, int len); + * writes a text of specified length at position (row, col) + * + * void (*drv_generic_text_real_defchar)(int ascii, unsigned char *buffer); + * defines the bitmap of a user-defined character + * + * + * exported fuctions: + * + * int drv_generic_text_init (char *section, char *driver); + * initializes the generic text driver + * + * int drv_generic_text_draw (WIDGET *W); + * renders Text widget into framebuffer + * calls drv_generic_text_real_write() + * + * int drv_generic_text_icon_init (void); + * initializes the generic icon driver + * + * int drv_generic_text_icon_draw (WIDGET *W); + * renders Icon widget into framebuffer + * calls drv_generic_text_real_write() and drv_generic_text_real_defchar() + * + * int drv_generic_text_bar_init (int single_segments); + * initializes the generic icon driver + * + * void drv_generic_text_bar_add_segment (int val1, int val2, DIRECTION dir, int ascii); + * adds a 'fixed' character to the bar-renderer + * + * int drv_generic_text_bar_draw (WIDGET *W); + * renders Bar widget into framebuffer + * calls drv_generic_text_real_write() and drv_generic_text_real_defchar() + * + * int drv_generic_text_quit (void); + * closes the generic text driver + * + */ + +#include "config.h" + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <termios.h> +#include <fcntl.h> + +#include "debug.h" +#include "cfg.h" +#include "plugin.h" +#include "widget.h" +#include "widget_text.h" +#include "widget_icon.h" +#include "widget_bar.h" +#include "drv.h" +#include "drv_generic.h" +#include "drv_generic_text.h" + +#ifdef WITH_DMALLOC +#include <dmalloc.h> +#endif + + +typedef struct { + int val1; + int val2; + DIRECTION dir; + STYLE style; + int segment; + int invalid; +} BAR; + +typedef struct { + int val1; + int val2; + DIRECTION dir; + STYLE style; + int used; + int ascii; +} SEGMENT; + +static char *Section = NULL; +static char *Driver = NULL; + +int CHARS = 0; /* number of user-defineable characters */ +int CHAR0 = 0; /* ASCII of first user-defineable char */ +int ICONS = 0; /* number of user-defineable characters reserved for icons */ + +int GOTO_COST = 0; /* number of bytes a goto command requires */ +int INVALIDATE = 0; /* re-send a modified userdefined char? */ + + +void (*drv_generic_text_real_write) () = NULL; +void (*drv_generic_text_real_defchar) () = NULL; + + +static char *LayoutFB = NULL; +static char *DisplayFB = NULL; +static int *L2D = NULL; + +static int Single_Segments = 0; + +static int nSegment = 0; +static int fSegment = 0; +static SEGMENT Segment[128]; +static BAR *BarFB = NULL; + + +/****************************************/ +/*** generic Framebuffer stuff ***/ +/****************************************/ + +static void drv_generic_text_resizeFB(int rows, int cols) +{ + char *newFB; + int *newL2D; + BAR *newBar; + int i, row, col; + + /* Layout FB is large enough */ + if (rows <= LROWS && cols <= LCOLS) + return; + + /* get maximum values */ + if (rows < LROWS) + rows = LROWS; + if (cols < LCOLS) + cols = LCOLS; + + /* allocate new Layout FB */ + newFB = malloc(cols * rows * sizeof(*newFB)); + memset(newFB, ' ', rows * cols * sizeof(*newFB)); + + /* transfer contents */ + if (LayoutFB != NULL) { + for (row = 0; row < LROWS; row++) { + for (col = 0; col < LCOLS; col++) { + newFB[row * cols + col] = LayoutFB[row * LCOLS + col]; + } + } + free(LayoutFB); + } + LayoutFB = newFB; + + /* allocate new transformer */ + newL2D = malloc(cols * rows * sizeof(*newL2D)); + + /* intitialize translator */ + for (row = 0; row < rows; row++) { + for (col = 0; col < cols; col++) { + newL2D[row * cols + col] = row * DCOLS + col; + } + } + + /* transfer transformer */ + if (L2D != NULL) { + for (row = 0; row < LROWS; row++) { + for (col = 0; col < LCOLS; col++) { + newL2D[row * cols + col] = L2D[row * LCOLS + col]; + } + } + free(L2D); + } + L2D = newL2D; + + /* resize Bar buffer */ + if (BarFB) { + + newBar = malloc(rows * cols * sizeof(BAR)); + + for (i = 0; i < rows * cols; i++) { + newBar[i].val1 = -1; + newBar[i].val2 = -1; + newBar[i].dir = 0; + newBar[i].segment = -1; + newBar[i].invalid = 0; + } + + /* transfer contents */ + for (row = 0; row < LROWS; row++) { + for (col = 0; col < LCOLS; col++) { + newBar[row * cols + col] = BarFB[row * LCOLS + col]; + } + } + + free(BarFB); + BarFB = newBar; + } + + LCOLS = cols; + LROWS = rows; +} + + +static void drv_generic_text_blit(const int row, const int col, const int height, const int width) +{ + int lr, lc; /* layout row/col */ + int dr, dc; /* display row/col */ + int p1, p2; /* start/end positon of changed area */ + int eq; /* counter for equal contents */ + + /* loop over layout rows */ + for (lr = row; lr < LROWS && lr < row + height; lr++) { + /* transform layout to display row */ + dr = lr; + /* sanity check */ + if (dr < 0 || dr >= DROWS) + continue; + /* loop over layout cols */ + for (lc = col; lc < LCOLS && lc < col + width; lc++) { + /* transform layout to display column */ + dc = lc; + /* sanity check */ + if (dc < 0 || dc >= DCOLS) + continue; + /* find start of difference */ + if (DisplayFB[dr * DCOLS + dc] == LayoutFB[lr * LCOLS + lc]) + continue; + /* find end of difference */ + for (p1 = dc, p2 = p1, eq = 0, lc++; lc < LCOLS && lc < col + width; lc++) { + /* transform layout to display column */ + dc = lc; + /* sanity check */ + if (dc < 0 || dc >= DCOLS) + continue; + if (DisplayFB[dr * DCOLS + dc] == LayoutFB[lr * LCOLS + lc]) { + if (++eq > GOTO_COST) + break; + } else { + p2 = dc; + eq = 0; + } + } + /* send to display */ + memcpy(DisplayFB + dr * DCOLS + p1, LayoutFB + lr * LCOLS + p1, p2 - p1 + 1); + if (drv_generic_text_real_write) + drv_generic_text_real_write(dr, p1, DisplayFB + dr * DCOLS + p1, p2 - p1 + 1); + } + } +} + + +/****************************************/ +/*** generic text handling ***/ +/****************************************/ + +int drv_generic_text_init(const char *section, const char *driver) +{ + + Section = (char *) section; + Driver = (char *) driver; + + /* init display framebuffer */ + DisplayFB = (char *) malloc(DCOLS * DROWS * sizeof(*DisplayFB)); + memset(DisplayFB, ' ', DROWS * DCOLS * sizeof(*DisplayFB)); + + /* init layout framebuffer */ + LROWS = 0; + LCOLS = 0; + LayoutFB = NULL; + L2D = NULL; + drv_generic_text_resizeFB(DROWS, DCOLS); + + /* sanity check */ + if (DisplayFB == NULL || LayoutFB == NULL || L2D == NULL) { + error("%s: framebuffer could not be allocated: malloc() failed", Driver); + return -1; + } + + /* init generic driver & register plugins */ + drv_generic_blit = drv_generic_text_blit; + drv_generic_init(); + + return 0; +} + + +/* say hello to the user */ +int drv_generic_text_greet(const char *msg1, const char *msg2) +{ + int i; + int flag = 0; + + char *line1[] = { "* LCD4Linux " VERSION " *", + "LCD4Linux " VERSION, + "* LCD4Linux *", + "LCD4Linux", + "L4Linux", + NULL + }; + + char *line2[] = { "http://lcd4linux.bulix.org", + "lcd4linux.bulix.org", + NULL + }; + + + for (i = 0; line1[i]; i++) { + if (strlen(line1[i]) <= (unsigned) DCOLS) { + if (drv_generic_text_real_write) + drv_generic_text_real_write(0, (DCOLS - strlen(line1[i])) / 2, line1[i], strlen(line1[i])); + flag = 1; + break; + } + } + + if (DROWS >= 2) { + for (i = 0; line2[i]; i++) { + if (strlen(line2[i]) <= (unsigned) DCOLS) { + if (drv_generic_text_real_write) + drv_generic_text_real_write(1, (DCOLS - strlen(line2[i])) / 2, line2[i], strlen(line2[i])); + flag = 1; + break; + } + } + } + + if (msg1 && DROWS >= 3) { + int len = strlen(msg1); + if (len <= DCOLS) { + if (drv_generic_text_real_write) + drv_generic_text_real_write(2, (DCOLS - len) / 2, msg1, len); + flag = 1; + } + } + + if (msg2 && DROWS >= 4) { + int len = strlen(msg2); + if (len <= DCOLS) { + if (drv_generic_text_real_write) + drv_generic_text_real_write(3, (DCOLS - len) / 2, msg2, len); + flag = 1; + } + } + + return flag; +} + + +int drv_generic_text_draw(WIDGET * W) +{ + WIDGET_TEXT *Text = W->data; + char *txt; + int row, col, len; + + row = W->row; + col = W->col; + txt = Text->buffer; + len = strlen(txt); + + /* maybe grow layout framebuffer */ + drv_generic_text_resizeFB(row + 1, col + len); + + /* transfer new text into layout buffer */ + memcpy(LayoutFB + row * LCOLS + col, txt, len); + + /* blit it */ + drv_generic_text_blit(row, col, 1, len); + + return 0; +} + + +int drv_generic_text_quit(void) +{ + + if (DisplayFB) { + free(DisplayFB); + DisplayFB = NULL; + } + + if (LayoutFB) { + free(LayoutFB); + LayoutFB = NULL; + } + + if (L2D) { + free(L2D); + L2D = NULL; + } + + if (BarFB) { + free(BarFB); + BarFB = NULL; + } + + widget_unregister(); + + return (0); +} + + +/****************************************/ +/*** generic icon handling ***/ +/****************************************/ + +int drv_generic_text_icon_init(void) +{ + if (cfg_number(Section, "Icons", 0, 0, CHARS, &ICONS) < 0) + return -1; + if (ICONS > 0) { + info("%s: reserving %d of %d user-defined characters for icons", Driver, ICONS, CHARS); + } + return 0; +} + + +int drv_generic_text_icon_draw(WIDGET * W) +{ + static int icon_counter = 0; + WIDGET_ICON *Icon = W->data; + int row, col; + int visible; + int invalidate = 0; + unsigned char ascii; + + row = W->row; + col = W->col; + + /* maybe grow layout framebuffer */ + drv_generic_text_resizeFB(row + 1, col + 1); + + /* icon deactivated? */ + if (Icon->ascii == -2) + return 0; + + /* ASCII already assigned? */ + if (Icon->ascii == -1) { + if (icon_counter >= ICONS) { + error("cannot process icon '%s': out of icons", W->name); + Icon->ascii = -2; + return -1; + } + icon_counter++; + Icon->ascii = CHAR0 + CHARS - icon_counter; + } + + /* Icon visible? */ + visible = P2N(&Icon->visible) > 0; + + /* maybe redefine icon */ + if (Icon->curmap != Icon->prvmap && visible) { + Icon->prvmap = Icon->curmap; + if (drv_generic_text_real_defchar) + drv_generic_text_real_defchar(Icon->ascii, Icon->bitmap + YRES * Icon->curmap); + invalidate = INVALIDATE; + } + + /* use blank if invisible */ + ascii = visible ? Icon->ascii : ' '; + + /* transfer icon into layout buffer */ + LayoutFB[row * LCOLS + col] = ascii; + + /* ugly invalidation: change display FB to a wrong value so blit() will really send it */ + if (invalidate) { + DisplayFB[row * DCOLS + col] = ~ascii; + } + + /* blit it */ + drv_generic_text_blit(row, col, 1, 1); + + return 0; + +} + + +/****************************************/ +/*** generic bar handling ***/ +/****************************************/ + +static void drv_generic_text_bar_clear(void) +{ + int i; + + for (i = 0; i < LROWS * LCOLS; i++) { + BarFB[i].val1 = -1; + BarFB[i].val2 = -1; + BarFB[i].dir = 0; + BarFB[i].style = 0; + BarFB[i].segment = -1; + BarFB[i].invalid = 0; + } + + for (i = 0; i < nSegment; i++) { + Segment[i].used = 0; + } +} + + +int drv_generic_text_bar_init(const int single_segments) +{ + if (BarFB) + free(BarFB); + + if ((BarFB = malloc(LROWS * LCOLS * sizeof(BAR))) == NULL) { + error("bar buffer allocation failed: out of memory"); + return -1; + } + + Single_Segments = single_segments; + + nSegment = 0; + fSegment = 0; + + drv_generic_text_bar_clear(); + + return 0; +} + + +void drv_generic_text_bar_add_segment(const int val1, const int val2, const DIRECTION dir, const int ascii) +{ + Segment[fSegment].val1 = val1; + Segment[fSegment].val2 = val2; + Segment[fSegment].dir = dir; + if (val1 == 0 && val2 == 0) + Segment[fSegment].style = 0; + else + Segment[fSegment].style = 255; + Segment[fSegment].used = 0; + Segment[fSegment].ascii = ascii; + + fSegment++; + nSegment = fSegment; +} + + +static void drv_generic_text_bar_create_bar(int row, int col, const DIRECTION dir, STYLE style, int len, int val1, + int val2) +{ + int rev = 0, max; + if (style) + BarFB[row * LCOLS + col].style = STYLE_FIRST; + + switch (dir) { + case DIR_WEST: + max = len * XRES; + val1 = max - val1; + val2 = max - val2; + rev = 1; + + case DIR_EAST: + while (len > 0 && col < LCOLS) { + BarFB[row * LCOLS + col].dir = dir; + BarFB[row * LCOLS + col].segment = -1; + if (style && BarFB[row * LCOLS + col].style == 0) + BarFB[row * LCOLS + col].style = style; + if (val1 >= XRES) { + BarFB[row * LCOLS + col].val1 = rev ? 0 : XRES; + val1 -= XRES; + } else { + BarFB[row * LCOLS + col].val1 = rev ? XRES - val1 : val1; + val1 = 0; + } + if (val2 >= XRES) { + BarFB[row * LCOLS + col].val2 = rev ? 0 : XRES; + val2 -= XRES; + } else { + BarFB[row * LCOLS + col].val2 = rev ? XRES - val2 : val2; + val2 = 0; + } + len--; + col++; + } + if (style) + BarFB[row * LCOLS + col - 1].style = STYLE_LAST; + break; + + case DIR_NORTH: + max = len * YRES; + val1 = max - val1; + val2 = max - val2; + rev = 1; + + case DIR_SOUTH: + while (len > 0 && row < LROWS) { + BarFB[row * LCOLS + col].dir = dir; + BarFB[row * LCOLS + col].segment = -1; + if (val1 >= YRES) { + BarFB[row * LCOLS + col].val1 = rev ? 0 : YRES; + val1 -= YRES; + } else { + BarFB[row * LCOLS + col].val1 = rev ? YRES - val1 : val1; + val1 = 0; + } + if (val2 >= YRES) { + BarFB[row * LCOLS + col].val2 = rev ? 0 : YRES; + val2 -= YRES; + } else { + BarFB[row * LCOLS + col].val2 = rev ? YRES - val2 : val2; + val2 = 0; + } + len--; + row++; + } + break; + } +} + + +static void drv_generic_text_bar_create_segments(void) +{ + int i, j, n; + int res, l1, l2; + + /* find first unused segment */ + for (i = fSegment; i < nSegment && Segment[i].used; i++); + + /* pack unused segments */ + for (j = i + 1; j < nSegment; j++) { + if (Segment[j].used) + Segment[i++] = Segment[j]; + } + nSegment = i; + + /* create needed segments */ + for (n = 0; n < LROWS * LCOLS; n++) { + if (BarFB[n].dir == 0) + continue; + res = BarFB[n].dir & (DIR_EAST | DIR_WEST) ? XRES : YRES; + for (i = 0; i < nSegment; i++) { + l1 = Segment[i].val1; + if (l1 > res) + l1 = res; + l2 = Segment[i].val2; + if (l2 > res) + l2 = res; + + /* same value */ + if (l1 == BarFB[n].val1 && l2 == BarFB[n].val2) { + /* empty block, only style is interesting */ + if (l1 == 0 && l2 == 0 && Segment[i].style == BarFB[n].style) + break; + /* full block, style doesn't matter */ + if (l1 == res && l2 == res) + break; + /* half upper block */ + if (l1 == res && l2 == 0 && Segment[i].style == BarFB[n].style) + break; + /* half lower block */ + if (l1 == 0 && l2 == res && Segment[i].style == BarFB[n].style) + break; + /* same style, same direction */ + if (Segment[i].style == BarFB[n].style && Segment[i].dir & BarFB[n].dir) + break; +#if 0 + /* hollow style, val(1,2) == 1, like '[' */ + if (l1 == 1 && l2 == 1 && Segment[i].style == STYLE_FIRST && BarFB[n].style == STYLE_HOLLOW) + break; + /* hollow style, val(1,2) == 1, like ']' */ + if (l1 == 1 && l2 == 1 && Segment[i].style == STYLE_LAST && BarFB[n].style == STYLE_HOLLOW) + break; +#endif + } + } + if (i == nSegment) { + nSegment++; + Segment[i].val1 = BarFB[n].val1; + Segment[i].val2 = BarFB[n].val2; + Segment[i].dir = BarFB[n].dir; + Segment[i].style = BarFB[n].style; + Segment[i].used = 0; + Segment[i].ascii = -1; + } + BarFB[n].segment = i; + } +} + + +static int drv_generic_text_bar_segment_error(const int i, const int j) +{ + int res; + int i1, i2, j1, j2; + + if (i == j) + return 65535; + if (!(Segment[i].dir & Segment[j].dir)) + return 65535; + if (Segment[i].style != Segment[j].style) + return 65535; + + res = Segment[i].dir & (DIR_EAST | DIR_WEST) ? XRES : YRES; + + i1 = Segment[i].val1; + if (i1 > res) + i1 = res; + i2 = Segment[i].val2; + if (i2 > res) + i2 = res; + j1 = Segment[j].val1; + if (j1 > res) + j1 = res; + j2 = Segment[j].val2; + if (j2 > res) + j2 = res; + + /* do not replace empty with non-empty */ + if (i1 == 0 && j1 != 0) + return 65535; + if (i2 == 0 && j2 != 0) + return 65535; + + /* do not replace full with non-full */ + if (i1 == res && j1 < res) + return 65535; + if (i2 == res && j2 < res) + return 65535; + + /* do not replace start line */ + /* but only if there are at least some chars available */ + if (CHARS - ICONS > 0) { + if (i1 == 1 && j1 != 1 && i2 > 0) + return 65535; + if (i2 == 1 && j2 != 1 && j1 > 0) + return 65535; + } + + /* do not replace equal length with non-equal length */ + if (i1 == i2 && j1 != j2) + return 65535; + + return (i1 - j1) * (i1 - j1) + (i2 - j2) * (i2 - j2); +} + + +static void drv_generic_text_bar_pack_segments(void) +{ + int i, j, n, min; + int pack_i, pack_j; + int pass1 = 1; + int error[nSegment][nSegment]; + + if (nSegment <= fSegment + CHARS - ICONS) { + return; + } + + for (i = 0; i < nSegment; i++) { + for (j = 0; j < nSegment; j++) { + error[i][j] = drv_generic_text_bar_segment_error(i, j); + /* debug ("[%d][%d] = %d", i, j, error[i][j]); */ + } + } + + while (nSegment > fSegment + CHARS - ICONS) { + + min = 65535; + pack_i = -1; + pack_j = -1; + for (i = fSegment; i < nSegment; i++) { + if (pass1 && Segment[i].used) + continue; + for (j = 0; j < nSegment; j++) { + if (error[i][j] < min) { + min = error[i][j]; + pack_i = i; + pack_j = j; + } + } + } + if (pack_i == -1) { + if (pass1) { + pass1 = 0; + continue; + } else { + error("unable to compact bar characters"); + error("nSegment=%d fSegment=%d CHARS=%d ICONS=%d", nSegment, fSegment, CHARS, ICONS); + error("Segment[0].val1=%d val2=%d", Segment[0].val1, Segment[0].val2); + error("Segment[1].val1=%d val2=%d", Segment[1].val1, Segment[1].val2); + error("Segment[2].val1=%d val2=%d", Segment[2].val1, Segment[2].val2); + nSegment = CHARS - ICONS; + break; + } + } +#if 0 + debug("pack_segment: n=%d i=%d j=%d min=%d", nSegment, pack_i, pack_j, min); + debug("Pack_segment: i1=%d i2=%d j1=%d j2=%d\n", Segment[pack_i].val1, Segment[pack_i].val2, + Segment[pack_j].val1, Segment[pack_j].val2); +#endif + + nSegment--; + Segment[pack_i] = Segment[nSegment]; + + for (i = 0; i < nSegment; i++) { + error[pack_i][i] = error[nSegment][i]; + error[i][pack_i] = error[i][nSegment]; + } + + for (n = 0; n < LROWS * LCOLS; n++) { + if (BarFB[n].segment == pack_i) + BarFB[n].segment = pack_j; + if (BarFB[n].segment == nSegment) + BarFB[n].segment = pack_i; + } + } +} + + +static void drv_generic_text_bar_define_chars(void) +{ + int c, i, j; + unsigned char buffer[8]; + + for (i = fSegment; i < nSegment; i++) { + if (Segment[i].used) + continue; + if (Segment[i].ascii != -1) + continue; + for (c = 0; c < CHARS - ICONS; c++) { + for (j = fSegment; j < nSegment; j++) { + if (Segment[j].ascii == c) + break; + } + if (j == nSegment) + break; + } + Segment[i].ascii = c; + switch (Segment[i].dir) { + case DIR_WEST: + if (Segment[i].style) { + buffer[0] = 255; + buffer[7] = 255; + if (Segment[i].style & (STYLE_FIRST | STYLE_LAST)) + for (j = 1; j < 7; j++) { + buffer[j] |= Segment[i].style & STYLE_FIRST ? 16 : 1; + } + } + break; + case DIR_EAST: + for (j = 0; j < 4; j++) { + buffer[j] = 255 << (XRES - Segment[i].val1); + buffer[j + 4] = 255 << (XRES - Segment[i].val2); + } + if (Segment[i].style) { + buffer[0] = 255; + buffer[7] = 255; + if (Segment[i].style & (STYLE_FIRST | STYLE_LAST)) + for (j = 1; j < 7; j++) { + buffer[j] |= Segment[i].style & STYLE_FIRST ? 16 : 1; + } + } + break; + case DIR_NORTH: + for (j = 0; j < Segment[i].val1; j++) { + buffer[7 - j] = (1 << XRES) - 1; + } + for (; j < YRES; j++) { + buffer[7 - j] = 0; + } + break; + case DIR_SOUTH: + for (j = 0; j < Segment[i].val1; j++) { + buffer[j] = (1 << XRES) - 1; + } + for (; j < YRES; j++) { + buffer[j] = 0; + } + break; + } + if (drv_generic_text_real_defchar) + drv_generic_text_real_defchar(CHAR0 + c, buffer); + + /* maybe invalidate framebuffer */ + if (INVALIDATE) { + for (j = 0; j < LROWS * LCOLS; j++) { + if (BarFB[j].segment == i) { + BarFB[j].invalid = 1; + } + } + } + } +} + + +int drv_generic_text_bar_draw(WIDGET * W) +{ + WIDGET_BAR *Bar = W->data; + int row, col, len, res, max, val1, val2; + int c, n, s; + DIRECTION dir; + STYLE style; + + row = W->row; + col = W->col; + dir = Bar->direction; + style = Bar->style; + len = Bar->length; + + /* maybe grow layout framebuffer */ + /* bars *always* grow heading North or East! */ + if (dir & (DIR_EAST | DIR_WEST)) { + drv_generic_text_resizeFB(row + 1, col + len); + } else { + drv_generic_text_resizeFB(row + 1, col + 1); + } + + res = dir & (DIR_EAST | DIR_WEST) ? XRES : YRES; + max = len * res; + val1 = Bar->val1 * (double) (max); + val2 = Bar->val2 * (double) (max); + + if (val1 < 1) + val1 = 1; + else if (val1 > max) + val1 = max; + + if (val2 < 1) + val2 = 1; + else if (val2 > max) + val2 = max; + + if (Single_Segments) + val2 = val1; + + /* create this bar */ + drv_generic_text_bar_create_bar(row, col, dir, style, len, val1, val2); + + /* process all bars */ + drv_generic_text_bar_create_segments(); + drv_generic_text_bar_pack_segments(); + drv_generic_text_bar_define_chars(); + + /* reset usage flags */ + for (s = 0; s < nSegment; s++) { + Segment[s].used = 0; + } + + /* set usage flags */ + for (n = 0; n < LROWS * LCOLS; n++) { + if ((s = BarFB[n].segment) != -1) + Segment[s].used = 1; + } + + /* transfer bars into layout buffer */ + for (row = 0; row < LROWS; row++) { + for (col = 0; col < LCOLS; col++) { + n = row * LCOLS + col; + s = BarFB[n].segment; + if (s == -1) + continue; + c = Segment[s].ascii; + if (c == -1) + continue; + if (s >= fSegment) + c += CHAR0; /* ascii offset for user-defineable chars */ + LayoutFB[n] = c; + /* maybe invalidate display framebuffer */ + if (BarFB[n].invalid) { + BarFB[n].invalid = 0; + /* ugly invalidation: change display FB to a wrong value so blit() will really send it */ + DisplayFB[row * DCOLS + col] = ~LayoutFB[n]; + } + } + } + + /* blit whole layout FB */ + drv_generic_text_blit(0, 0, LROWS, LCOLS); + + + return 0; + +} |