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-rw-r--r--src/bar.c607
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diff --git a/src/bar.c b/src/bar.c
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-/* Functionality for a bar across the bottom of the screen listing the
- * windows currently managed.
- *
- * Copyright (C) 2000, 2001, 2002, 2003, 2004 Shawn Betts <sabetts@vcn.bc.ca>
- *
- * This file is part of ratpoison.
- *
- * ratpoison 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.
- *
- * ratpoison 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 software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- */
-
-#include <X11/X.h>
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-
-#ifdef USE_XFT_FONT
-#include <X11/Xft/Xft.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "ratpoison.h"
-
-#include "assert.h"
-
-/* Possible values for bar_is_raised status. */
-#define BAR_IS_HIDDEN 0
-#define BAR_IS_WINDOW_LIST 1
-#define BAR_IS_MESSAGE 2
-
-/* A copy of the last message displayed in the message bar. */
-static char *last_msg = NULL;
-static int last_mark_start = 0;
-static int last_mark_end = 0;
-
-static void marked_message_internal (char *msg, int mark_start, int mark_end);
-
-/* Reset the alarm to auto-hide the bar in BAR_TIMEOUT seconds. */
-static void
-reset_alarm (void)
-{
- alarm (defaults.bar_timeout);
- alarm_signalled = 0;
-}
-
-/* Hide the bar from sight. */
-int
-hide_bar (rp_screen *s)
-{
- if (s->bar_is_raised)
- {
- s->bar_is_raised = 0;
- XUnmapWindow (dpy, s->bar_window);
-
- /* Possibly restore colormap. */
- if (current_window())
- {
- XUninstallColormap (dpy, s->def_cmap);
- XInstallColormap (dpy, current_window()->colormap);
- }
-
- return 1;
- }
-
- return 0;
-}
-
-/* Show window listing in bar. */
-int
-show_bar (rp_screen *s, char *fmt)
-{
- if (!s->bar_is_raised)
- {
- s->bar_is_raised = BAR_IS_WINDOW_LIST;
- XMapRaised (dpy, s->bar_window);
- update_window_names (s, fmt);
-
- /* Switch to the default colormap */
- if (current_window())
- XUninstallColormap (dpy, current_window()->colormap);
- XInstallColormap (dpy, s->def_cmap);
-
- reset_alarm();
- return 1;
- }
-
- /* If the bar is raised we still need to display the window
- names. */
- update_window_names (s, fmt);
- return 0;
-}
-
-int
-bar_x (rp_screen *s, int width)
-{
- int x = 0;
-
- switch (defaults.bar_location)
- {
- case NorthWestGravity:
- case WestGravity:
- case SouthWestGravity:
- x = s->left + (defaults.bar_in_padding ? 0 : defaults.padding_left);
- break;
- case NorthGravity:
- case CenterGravity:
- case SouthGravity:
- x = s->left + (s->width - width - defaults.bar_border_width * 2) / 2
- - (defaults.bar_in_padding ? 0 : defaults.padding_left);
- break;
- case NorthEastGravity:
- case EastGravity:
- case SouthEastGravity:
- x = s->left + s->width - width - defaults.bar_border_width * 2
- - (defaults.bar_in_padding ? 0 : defaults.padding_right);
- break;
- }
-
- return x;
-}
-
-int
-bar_y (rp_screen *s, int height)
-{
- int y = 0;
-
- switch (defaults.bar_location)
- {
- case NorthEastGravity:
- case NorthGravity:
- case NorthWestGravity:
- y = s->top + (defaults.bar_in_padding ? 0 : defaults.padding_top);
- break;
- case EastGravity:
- case CenterGravity:
- case WestGravity:
- y = s->top + (s->height - height
- - defaults.bar_border_width * 2) / 2
- - (defaults.bar_in_padding ? 0 : defaults.padding_top);
- break;
- case SouthEastGravity:
- case SouthGravity:
- case SouthWestGravity:
- y = s->top + (s->height - height
- - defaults.bar_border_width * 2)
- - (defaults.bar_in_padding ? 0 : defaults.padding_top);
- break;
- }
-
- return y;
-}
-
-void
-update_bar (rp_screen *s)
-{
- if (s->bar_is_raised == BAR_IS_WINDOW_LIST) {
- update_window_names (s, defaults.window_fmt);
- return;
- }
-
- if (s->bar_is_raised == BAR_IS_HIDDEN)
- return;
-
- redraw_last_message();
-}
-
-/* Note that we use marked_message_internal to avoid resetting the
- alarm. */
-void
-update_window_names (rp_screen *s, char *fmt)
-{
- struct sbuf *bar_buffer;
- int mark_start = 0;
- int mark_end = 0;
-
- if (s->bar_is_raised != BAR_IS_WINDOW_LIST) return;
-
- bar_buffer = sbuf_new (0);
-
- if(defaults.window_list_style == STYLE_ROW)
- {
- get_window_list (fmt, NULL, bar_buffer, &mark_start, &mark_end);
- marked_message_internal (sbuf_get (bar_buffer), mark_start, mark_end);
- }
- else
- {
- get_window_list (fmt, "\n", bar_buffer, &mark_start, &mark_end);
- marked_message_internal (sbuf_get (bar_buffer), mark_start, mark_end);
- }
-
-
-/* marked_message (sbuf_get (bar_buffer), mark_start, mark_end); */
- sbuf_free (bar_buffer);
-}
-
-void
-message (char *s)
-{
- marked_message (s, 0, 0);
-}
-
-void
-marked_message_printf (int mark_start, int mark_end, char *fmt, ...)
-{
- char *buffer;
- va_list ap;
-
- va_start (ap, fmt);
- buffer = xvsprintf (fmt, ap);
- va_end (ap);
-
- marked_message (buffer, mark_start, mark_end);
- free (buffer);
-}
-
-static int
-count_lines (char* msg, int len)
-{
- int ret = 1;
- int i;
-
- if (len < 1)
- return 1;
-
- for(i=0; i<len; i++)
- {
- if (msg[i] == '\n') ret++;
- }
-
- return ret;
-}
-
-
-static int
-max_line_length (char* msg)
-{
- rp_screen *s = current_screen ();
- size_t i;
- size_t start;
- int ret = 0;
-
- /* Count each line and keep the length of the longest one. */
- for(start=0, i=0; i <= strlen(msg); i++)
- {
- if(msg[i] == '\n' || msg[i] == '\0')
- {
- int current_width;
-
- /* Check if this line is the longest so far. */
- current_width = rp_text_width (s, msg + start, i - start);
- if(current_width > ret)
- {
- ret = current_width;
- }
-
- /* Update the start of the new line. */
- start = i + 1;
- }
- }
-
- return ret;
-}
-
-static int
-pos_in_line (char* msg, int pos)
-{
- int ret;
- int i;
-
- if(pos <= 0)
- return 0;
-
- /* Go backwards until we hit the beginning of the string or a new
- line. */
- ret = 0;
- for(i=pos-1; i>=0; ret++, i--)
- {
- if(msg[i]=='\n')
- break;
- }
-
- return ret;
-}
-
-static int
-line_beginning (char* msg, int pos)
-{
- int ret = 0;
- int i;
-
- if(pos <= 0)
- return 0;
-
- /* Go backwards until we hit a new line or the beginning of the
- string. */
- for(i=pos-1; i>=0; --i)
- {
- if (msg[i]=='\n')
- {
- ret = i + 1;
- break;
- }
- }
-
- return ret;
-}
-
-static void
-draw_partial_string (rp_screen *s, char *msg, int line_no, int start, int end, int style)
-{
- int line_height = FONT_HEIGHT (s);
-
- rp_draw_string (s, s->bar_window, style,
- defaults.bar_x_padding,
- defaults.bar_y_padding + FONT_ASCENT(s)
- + line_no * line_height,
- msg + start, end - start + 1);
-}
-
-static void
-draw_string (rp_screen *s, char *msg, int mark_start, int mark_end)
-{
- size_t i;
- int line_no;
- int start;
- int style = STYLE_NORMAL, update = 0;
-
- /* Walk through the string, print each line. */
- start = 0;
- line_no = 0;
-/* if (mark_start == 0 && mark_end == 0) */
-/* mark_start = mark_end = -1; */
-
- for(i=0; i < strlen(msg); ++i)
- {
- if (i == (size_t)mark_start)
- {
- style = STYLE_INVERSE;
- update = 1;
- }
- if (i == (size_t)mark_end)
- {
- style = STYLE_NORMAL;
- update = 1;
- }
- if (msg[i] == '\n')
- update = 2;
-
- if (update)
- {
- draw_partial_string (s, msg, line_no, start, update == 2 ? i-1:i, style);
- start = i;
- if (update == 2)
- {
- line_no++;
- start++;
- }
- update = 0;
- }
- }
-
- /* Print the last line. */
- draw_partial_string (s, msg, line_no, start, strlen (msg)-1, style);
- XSync (dpy, False);
-}
-
-/* Move the marks if they are outside the string or if the start is
- after the end. */
-static void
-correct_mark (int msg_len, int *mark_start, int *mark_end)
-{
- /* Make sure the marks are inside the string. */
- if (*mark_start < 0)
- *mark_start = 0;
-
- if (*mark_end < 0)
- *mark_end = 0;
-
- if (*mark_start > msg_len)
- *mark_start = msg_len;
-
- if (*mark_end > msg_len)
- *mark_end = msg_len;
-
- /* Make sure the marks aren't reversed. */
- if (*mark_start > *mark_end)
- {
- int tmp;
- tmp = *mark_start;
- *mark_start = *mark_end;
- *mark_end = tmp;
- }
-
-}
-
-/* Raise the bar and put it in the right spot */
-static void
-prepare_bar (rp_screen *s, int width, int height)
-{
- width = width < s->width ? width : s->width;
- height = height < s->height ? height : s->height;
- XMoveResizeWindow (dpy, s->bar_window,
- bar_x (s, width), bar_y (s, height),
- width, height);
-
- /* Map the bar if needed */
- if (!s->bar_is_raised)
- {
- s->bar_is_raised = BAR_IS_MESSAGE;
- XMapRaised (dpy, s->bar_window);
-
- /* Switch to the default colormap */
- if (current_window())
- XUninstallColormap (dpy, current_window()->colormap);
- XInstallColormap (dpy, s->def_cmap);
- }
-
- XRaiseWindow (dpy, s->bar_window);
- XClearWindow (dpy, s->bar_window);
- XSync (dpy, False);
-}
-
-static void
-get_mark_box (char *msg, size_t mark_start, size_t mark_end,
- int *x, int *y, int *width, int *height)
-{
- rp_screen *s = current_screen ();
- int start, end;
- int mark_end_is_new_line = 0;
- int start_line;
- int end_line;
- int start_pos_in_line;
- int end_pos_in_line;
- int start_line_beginning;
- int end_line_beginning;
-
- /* If the mark_end is on a new line or the end of the string, then
- back it up one character. */
- if (msg[mark_end-1] == '\n' || mark_end == strlen (msg))
- {
- mark_end--;
- mark_end_is_new_line = 1;
- }
-
- start_line = count_lines(msg, mark_start);
- end_line = count_lines(msg, mark_end);
-
- start_pos_in_line = pos_in_line(msg, mark_start);
- end_pos_in_line = pos_in_line(msg, mark_end);
-
- start_line_beginning = line_beginning(msg, mark_start);
- end_line_beginning = line_beginning(msg, mark_end);
-
- PRINT_DEBUG (("start_line = %d, end_line = %d\n", start_line, end_line));
- PRINT_DEBUG (("start_line_beginning = %d, end_line_beginning = %d\n",
- start_line_beginning, end_line_beginning));
-
- if (mark_start == 0 || start_pos_in_line == 0)
- start = 0;
- else
- start = rp_text_width (s, &msg[start_line_beginning],
- start_pos_in_line) + defaults.bar_x_padding;
-
- end = rp_text_width (s, &msg[end_line_beginning],
- end_pos_in_line) + defaults.bar_x_padding * 2;
-
- if (mark_end != strlen (msg))
- end -= defaults.bar_x_padding;
-
- /* A little hack to highlight to the end of the line, if the
- mark_end is at the end of a line. */
- if (mark_end_is_new_line)
- {
- *width = max_line_length(msg) + defaults.bar_x_padding * 2;
- }
- else
- {
- *width = end - start;
- }
-
- *x = start;
- *y = (start_line - 1) * FONT_HEIGHT (s) + defaults.bar_y_padding;
- *height = (end_line - start_line + 1) * FONT_HEIGHT (s);
-}
-
-static void
-draw_box (rp_screen *s, int x, int y, int width, int height)
-{
- XGCValues lgv;
- GC lgc;
- unsigned long mask;
-
- lgv.foreground = s->fg_color;
- mask = GCForeground;
- lgc = XCreateGC(dpy, s->root, mask, &lgv);
-
- XFillRectangle (dpy, s->bar_window, lgc,
- x, y, width, height);
- XFreeGC (dpy, lgc);
-}
-
-static void
-draw_mark (rp_screen *s, char *msg, int mark_start, int mark_end)
-{
- int x, y, width, height;
-
- /* when this happens, there is no mark. */
- if (mark_end == 0 || mark_start == mark_end)
- return;
-
- get_mark_box (msg, mark_start, mark_end,
- &x, &y, &width, &height);
- draw_box (s, x, y, width, height);
-}
-
-static void
-update_last_message (char *msg, int mark_start, int mark_end)
-{
- free (last_msg);
- last_msg = xstrdup (msg);
- last_mark_start = mark_start;
- last_mark_end = mark_end;
-}
-
-void
-marked_message (char *msg, int mark_start, int mark_end)
-{
- /* Schedule the bar to be hidden after some amount of time. */
- reset_alarm ();
- marked_message_internal (msg, mark_start, mark_end);
-}
-
-static void
-marked_message_internal (char *msg, int mark_start, int mark_end)
-{
- rp_screen *s = current_screen ();
- int num_lines;
- int width;
- int height;
-
- PRINT_DEBUG (("msg = %s\n", msg?msg:"NULL"));
- PRINT_DEBUG (("mark_start = %d, mark_end = %d\n", mark_start, mark_end));
-
- /* Calculate the width and height of the window. */
- num_lines = count_lines (msg, strlen(msg));
- width = defaults.bar_x_padding * 2 + max_line_length(msg);
- height = FONT_HEIGHT (s) * num_lines + defaults.bar_y_padding * 2;
-
- prepare_bar (s, width, height);
-
- /* Draw the mark over the designated part of the string. */
- correct_mark (strlen (msg), &mark_start, &mark_end);
- draw_mark (s, msg, mark_start, mark_end);
-
- draw_string (s, msg, mark_start, mark_end);
-
- /* Keep a record of the message. */
- update_last_message (msg, mark_start, mark_end);
-}
-
-/* Use this just to update the bar. show_last_message will draw it and
- leave it up for a period of time. */
-void
-redraw_last_message (void)
-{
- char *msg;
-
- if (last_msg == NULL) return;
-
- /* A little kludge to avoid last_msg in marked_message from being
- strdup'd right after freeing the pointer. Note: in this case
- marked_message's msg arg would have been the same as
- last_msg. */
- msg = xstrdup (last_msg);
- marked_message_internal (msg, last_mark_start, last_mark_end);
- free (msg);
-}
-
-void
-show_last_message (void)
-{
- redraw_last_message();
- reset_alarm();
-}
-
-/* Free any memory associated with the bar. */
-void
-free_bar (void)
-{
- free (last_msg);
- last_msg = NULL;
-}
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