/* windows.c */
#include "windows.h"
-#include <stdint.h> /* for uint16_t, uint32_t */
-#include <ncurses.h> /* for LOTS of stuff */
+#include <stdint.h> /* for uint8_t, uint16_t, uint32_t */
+#include <ncurses.h> /* for typedefs WINDOW, chtype, wresize(), getmaxx(), */
+ /* getmaxy(), supbad(), delwin(), mvwaddch(), */
+ /* mvwaddstr(), newpad(), wnoutrefres(), erase(), */
+ /* werase(), pnoutrefresh(), doupdate() */
#include <stdlib.h> /* for malloc(), free() */
-#include <string.h> /* for strlen(), memcpy() */
+#include <string.h> /* for strlen(), strnlen(), memcpy() */
#include "yx_uint16.h" /* for yx_uint16 coordinates */
-/* Stores a window's border corners. This is a helper to draw_all_wins() (and
- * filled by its helper draw_wins_borders()) which draws the horizontal and
- * vertical lines of all windows' borders first and the corner characters of
- * all windows only afterwards (so that corners are not overwritten by lines).
- * This delay of corner drawing necessitates temporarily storing their
- * coordinates (harvested during the previous border drawing activities) in a
- * series of such Corners structs to be released at the end.
- *
- * TODO: Maybe replace this complicated method by dropping the harvesting of
- * corners from draw_wins_borders() and instead collecting them in a second
- * border drawing cycle that repeats some cycles but works in a much more
- * straightforward way.
- */
-struct Corners
-{
- struct yx_uint16 tl;
- struct yx_uint16 tr;
- struct yx_uint16 bl;
- struct yx_uint16 br;
-};
-
-
-
/* Fit virtual screen's width to minimum width demanded by current windows'
- * geometries.
+ * geometries. Returns 0 on success, 1 on (pad memory allocation) error.
*/
-static void refit_pad(struct WinMeta * wmeta);
+static uint8_t refit_pad(struct WinMeta * wmeta);
/* Update geometry (sizes, positions) of window "w" and its successors in the
* window chain. For the positioning algorithm place_win() is used.
+ *
+ * update_wins() returns 0 on success, 1 on (pad/window memory alloc.) error.
*/
-static void update_wins(struct WinMeta * wmeta, struct Win * w);
+static uint8_t update_wins(struct WinMeta * wmeta, struct Win * w);
static void place_win(struct WinMeta * wmeta, struct Win * w);
-/* draw_win_borders() Draws the vertical and horizontal borders of window "w"
- * sans corners, and draws the top border line as the windows' title bar
- * (highlighted if the window is described active by "active" being set).
- * draw_wins_borders().
+/* draw_win_borderlines() draws the vertical and horizontal borders of window
+ * "w" sans corners into the virtual screen "pad", and draws the top border
+ * line as the windows' title bar (highlighted if the window is described
+ * active by "active" being set). draw_wins_borderlines().
*
- * draw_wins_borders() calls draw_win_borders() recursively on all windows from
- * "w" on. It also fills "corners" with coordinates of each window's corners,
- * iterating over its Corners structs via the "i" index incremented by 1 over
- * each handled window. "w_active" is a pointer to the one window that
- * draw_win_borders() is supposed to handle as the active window.
+ * draw_wins_borderlines() calls draw_win_borderlines() recursively on all
+ * windows from "w" on. "w_active" is a pointer to the one window that
+ * draw_win_borderlines() is supposed to handle as the active window.
+ *
+ * Finally, draw_wins_bordercorners draws into "pad" the borders of window "w"
+ * and all its successors.
*/
-static void draw_win_borders(struct Win * w, char active);
-static void draw_wins_borders(struct Win * w, struct Win * w_active,
- struct Corners * corners, uint16_t i);
+static void draw_win_borderlines(struct Win * w, char active, WINDOW * pad);
+static void draw_wins_borderlines(struct Win * w, struct Win * w_active,
+ WINDOW * pad);
+static void draw_wins_bordercorners(struct Win * w, WINDOW * pad);
+
+/* Shift active window forwards / backwards in window chain. */
+static void shift_win_forward(struct WinMeta * wmeta);
+static void shift_win_backward(struct WinMeta * wmeta);
-static void refit_pad(struct WinMeta * wmeta)
+
+
+static uint8_t refit_pad(struct WinMeta * wmeta)
{
/* Determine rightmost window column. */
uint16_t lastwincol = 0;
- struct Win * w_p = wmeta->chain_start;
+ struct Win * w_p = wmeta->_chain_start;
while (w_p != 0)
{
- if (w_p->start.x + w_p->frame.size.x > lastwincol + 1)
+ if (w_p->_start.x + w_p->frame.size.x > lastwincol + 1)
{
- lastwincol = w_p->start.x + w_p->frame.size.x - 1;
+ lastwincol = w_p->_start.x + w_p->frame.size.x - 1;
}
- w_p = w_p->next;
+ w_p = w_p->_next;
}
/* Only resize the pad if the rightmost window column has changed. */
- if (getmaxx(wmeta->pad.curses_win) != lastwincol)
+ if (getmaxx(wmeta->padframe.curses_win) != lastwincol)
{
- wresize(wmeta->pad.curses_win,
- getmaxy(wmeta->pad.curses_win), lastwincol + 2);
+ return (ERR == wresize(wmeta->padframe.curses_win,
+ getmaxy(wmeta->padframe.curses_win),
+ lastwincol + 2));
}
+ return 0;
}
-static void update_wins (struct WinMeta * wmeta, struct Win * w)
+static uint8_t update_wins(struct WinMeta * wmeta, struct Win * w)
{
if (0 != w->frame.curses_win)
{
- destroy_win (w);
+ destroy_win(w);
}
place_win(wmeta, w);
- refit_pad(wmeta);
- w->frame.curses_win = subpad(wmeta->pad.curses_win,
- w->frame.size.y, w->frame.size.x,
- w->start.y, w->start.x);
- if (0 != w->next)
+ if (0 != refit_pad(wmeta))
+ {
+ return 1;
+ }
+ WINDOW * test = subpad(wmeta->padframe.curses_win,
+ w->frame.size.y, w->frame.size.x,
+ w->_start.y, w->_start.x);
+ if (NULL == test)
{
- update_wins (wmeta, w->next);
+ return 1;
}
+ w->frame.curses_win = test;
+ if (0 != w->_next)
+ {
+ return update_wins(wmeta, w->_next);
+ }
+ return 0;
}
-static void place_win (struct WinMeta * wmeta, struct Win * w)
+static void place_win(struct WinMeta * wmeta, struct Win * w)
{
/* First window goes into the upper-left corner. */
- w->start.x = 0;
- w->start.y = 1; /* Leave space for title bar. */
- if (0 != w->prev)
+ w->_start.x = 0;
+ w->_start.y = 1; /* Leave space for title bar. */
+ if (0 != w->_prev)
{
/* Non-first window fallbacks to: fit rightwards of rightmost border. */
- struct Win * w_top = w->prev;
- while (w_top->start.y != 1)
+ struct Win * w_top = w->_prev;
+ while (w_top->_start.y != 1)
{
- w_top = w_top->prev;
+ w_top = w_top->_prev;
}
- w->start.x = w_top->start.x + w_top->frame.size.x + 1;
+ w->_start.x = w_top->_start.x + w_top->frame.size.x + 1;
/* Fit window below its predecessor if that one directly thrones over
* empty space wide and high enough.
*/
- uint16_t w_prev_maxy = w->prev->start.y
- + getmaxy(w->prev->frame.curses_win);
- if ( w->frame.size.x <= w->prev->frame.size.x
- && w->frame.size.y < wmeta->pad.size.y - w_prev_maxy)
+ uint16_t w_prev_maxy = w->_prev->_start.y
+ + getmaxy(w->_prev->frame.curses_win);
+ if ( w->frame.size.x <= w->_prev->frame.size.x
+ && w->frame.size.y < wmeta->padframe.size.y - w_prev_maxy)
{
- w->start.x = w->prev->start.x;
- w->start.y = w_prev_maxy + 1;
+ w->_start.x = w->_prev->_start.x;
+ w->_start.y = w_prev_maxy + 1;
}
/* Failing that, try to open a new sub column below the nearest
*/
else
{
- struct Win * w_up = w->prev;
+ struct Win * w_up = w->_prev;
struct Win * w_upup = w_up;
uint16_t widthdiff;
while (w_up != w_top)
{
- w_upup = w_up->prev;
+ w_upup = w_up->_prev;
while (1)
{
- if (w_up->start.y != w_upup->start.y)
+ if (w_up->_start.y != w_upup->_start.y)
{
break;
}
- w_upup = w_upup->prev;
+ w_upup = w_upup->_prev;
}
- w_prev_maxy = w_upup->start.y
+ w_prev_maxy = w_upup->_start.y
+ getmaxy(w_upup->frame.curses_win);
- widthdiff = (w_upup->start.x + w_upup->frame.size.x)
- - (w_up->start.x + w_up->frame.size.x);
- if ( w->frame.size.y < wmeta->pad.size.y - w_prev_maxy
+ widthdiff = (w_upup->_start.x + w_upup->frame.size.x)
+ - (w_up->_start.x + w_up->frame.size.x);
+ if ( w->frame.size.y < wmeta->padframe.size.y - w_prev_maxy
&& w->frame.size.x < widthdiff)
{
- w->start.x = w_up->start.x + w_up->frame.size.x + 1 ;
- w->start.y = w_prev_maxy + 1;
+ w->_start.x = w_up->_start.x + w_up->frame.size.x + 1 ;
+ w->_start.y = w_prev_maxy + 1;
break;
}
w_up = w_upup;
-static void destroy_win (struct Win * w)
+static void destroy_win(struct Win * w)
{
delwin(w->frame.curses_win);
w->frame.curses_win = 0;
-static void draw_wins (struct Win * w)
+static void draw_wins(struct Win * w)
{
- w->draw(w);
- if (0 != w->next)
+ w->_draw(w);
+ if (0 != w->_next)
{
- draw_wins (w->next);
+ draw_wins(w->_next);
}
}
-static void draw_win_borders(struct Win * w, char active)
+static void draw_win_borderlines(struct Win * w, char active, WINDOW * pad)
{
- /* Draw vertical and horizontal border lines. */
- uint16_t y, x;
- for (y = w->start.y; y <= w->start.y + w->frame.size.y; y++)
- {
- mvwaddch(wgetparent(w->frame.curses_win), y, w->start.x - 1, '|');
- mvwaddch(wgetparent(w->frame.curses_win),
- y, w->start.x + w->frame.size.x, '|');
- }
- for (x = w->start.x; x <= w->start.x + w->frame.size.x; x++)
- {
- mvwaddch(wgetparent(w->frame.curses_win), w->start.y - 1, x, '-');
- mvwaddch(wgetparent(w->frame.curses_win),
- w->start.y + w->frame.size.y, x, '-');
- }
-
- /* Draw as much as possible of the title into center of top border line. */
- char min_title_length_visible = 3; /* minimum 1 char + 2 padding/decoration */
- if (w->frame.size.x >= min_title_length_visible)
- {
- uint16_t title_offset = 0;
- if (w->frame.size.x > strlen(w->title) + 2)
- {
- title_offset = (w->frame.size.x - (strlen(w->title) + 2)) / 2; // + 2 is for decoration
- }
- uint16_t length_visible = strnlen(w->title, w->frame.size.x - 2);
- char title[length_visible + 3];
- char decoration = ' ';
- if (1 == active)
- {
- decoration = '$';
- }
- memcpy(title + 1, w->title, length_visible);
- title[0] = title[length_visible + 1] = decoration;
- title[length_visible + 2] = '\0';
- mvwaddstr(wgetparent(w->frame.curses_win),
- w->start.y - 1, w->start.x + title_offset, title);
- }
+ /* Draw vertical and horizontal border lines. */
+ uint16_t y, x;
+ for (y = w->_start.y; y <= w->_start.y + w->frame.size.y; y++)
+ {
+ mvwaddch(pad, y, w->_start.x - 1, '|');
+ mvwaddch(pad, y, w->_start.x + w->frame.size.x, '|');
+ }
+ for (x = w->_start.x; x <= w->_start.x + w->frame.size.x; x++)
+ {
+ mvwaddch(pad, w->_start.y - 1, x, '-');
+ mvwaddch(pad, w->_start.y + w->frame.size.y, x, '-');
+ }
+
+ /* Draw as much as possible of the title into center of top border line. */
+ char min_title_length_visible = 3; /* min. 1 char + 2 padding/decoration */
+ if (w->frame.size.x >= min_title_length_visible)
+ {
+ uint16_t title_offset = 0;
+ if (w->frame.size.x > strlen(w->_title) + 2)
+ {
+ title_offset = (w->frame.size.x - (strlen(w->_title) + 2)) / 2;
+ } /* +2 is for padding/decoration */
+ uint16_t length_visible = strnlen(w->_title, w->frame.size.x - 2);
+ char title[length_visible + 3];
+ char decoration = ' ';
+ if (1 == active)
+ {
+ decoration = '$';
+ }
+ memcpy(title + 1, w->_title, length_visible);
+ title[0] = title[length_visible + 1] = decoration;
+ title[length_visible + 2] = '\0';
+ mvwaddstr(pad, w->_start.y - 1, w->_start.x + title_offset, title);
+ }
}
-static void draw_wins_borders(struct Win * w, struct Win * w_active,
- struct Corners * corners, uint16_t i)
+
+
+static void draw_wins_borderlines(struct Win * w, struct Win * w_active,
+ WINDOW * pad)
{
char active = 0;
if (w == w_active)
{
active = 1;
}
- draw_win_borders(w, active);
- corners[i].tl.y = w->start.y - 1;
- corners[i].tl.x = w->start.x - 1;
- corners[i].tr.y = w->start.y - 1;
- corners[i].tr.x = w->start.x + w->frame.size.x;
- corners[i].bl.y = w->start.y + w->frame.size.y;
- corners[i].bl.x = w->start.x - 1;
- corners[i].br.y = w->start.y + w->frame.size.y;
- corners[i].br.x = w->start.x + w->frame.size.x;
- if (0 != w->next)
+ draw_win_borderlines(w, active, pad);
+ if (0 != w->_next)
+ {
+ draw_wins_borderlines(w->_next, w_active, pad);
+ }
+}
+
+
+
+static void draw_wins_bordercorners(struct Win * w, WINDOW * pad)
+{
+ mvwaddch(pad, w->_start.y - 1, w->_start.x - 1, '+');
+ mvwaddch(pad, w->_start.y - 1, w->_start.x + w->frame.size.x, '+');
+ mvwaddch(pad, w->_start.y + w->frame.size.y, w->_start.x - 1, '+');
+ mvwaddch(pad,
+ w->_start.y + w->frame.size.y, w->_start.x + w->frame.size.x, '+');
+ if (0 != w->_next)
{
- draw_wins_borders (w->next, w_active, corners, i + 1);
+ draw_wins_bordercorners(w->_next, pad);
}
}
-extern struct WinMeta init_win_meta(WINDOW * screen)
+static void shift_win_forward(struct WinMeta * wmeta)
{
- struct WinMeta wmeta;
- wmeta.screen = screen;
- wmeta.pad.size.y = getmaxy(screen);
- wmeta.pad.size.x = getmaxx(screen);
- wmeta.chain_start = 0;
- wmeta.chain_end = 0;
- wmeta.pad_offset = 0;
- wmeta.pad.curses_win = newpad(wmeta.pad.size.y, 1);
- wmeta.active = 0;
- return wmeta;
+ if (wmeta->active == wmeta->_chain_end)
+ {
+ wmeta->_chain_end = wmeta->active->_prev;
+ wmeta->_chain_end->_next = 0;
+ wmeta->active->_next = wmeta->_chain_start;
+ wmeta->active->_next->_prev = wmeta->active;
+ wmeta->_chain_start = wmeta->active;
+ wmeta->_chain_start->_prev = 0;
+ }
+ else
+ {
+ struct Win * old_prev = wmeta->active->_prev;
+ struct Win * old_next = wmeta->active->_next;
+ if (wmeta->_chain_end == wmeta->active->_next)
+ {
+ wmeta->_chain_end = wmeta->active;
+ wmeta->active->_next = 0;
+ }
+ else
+ {
+ wmeta->active->_next = old_next->_next;
+ wmeta->active->_next->_prev = wmeta->active;
+ }
+ if (wmeta->_chain_start == wmeta->active)
+ {
+ wmeta->_chain_start = old_next;
+ }
+ else
+ {
+ old_prev->_next = old_next;
+ }
+ old_next->_prev = old_prev;
+ old_next->_next = wmeta->active;
+ wmeta->active->_prev = old_next;
+ }
+}
+
+
+
+static void shift_win_backward(struct WinMeta * wmeta)
+{
+ if (wmeta->active == wmeta->_chain_start)
+ {
+ wmeta->_chain_start = wmeta->active->_next;
+ wmeta->_chain_start->_prev = 0;
+ wmeta->active->_prev = wmeta->_chain_end;
+ wmeta->active->_prev->_next = wmeta->active;
+ wmeta->_chain_end = wmeta->active;
+ wmeta->_chain_end->_next = 0;
+ }
+ else
+ {
+ struct Win * old_prev = wmeta->active->_prev;
+ struct Win * old_next = wmeta->active->_next;
+ if (wmeta->_chain_start == wmeta->active->_prev)
+ {
+ wmeta->_chain_start = wmeta->active;
+ wmeta->active->_prev = 0;
+ }
+ else
+ {
+ wmeta->active->_prev = old_prev->_prev;
+ wmeta->active->_prev->_next = wmeta->active;
+ }
+ if (wmeta->_chain_end == wmeta->active)
+ {
+ wmeta->_chain_end = old_prev;
+ }
+ else
+ {
+ old_next->_prev = old_prev;
+ }
+ old_prev->_next = old_next;
+ old_prev->_prev = wmeta->active;
+ wmeta->active->_next = old_prev;
+ }
+}
+
+
+
+extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta * wmeta)
+{
+ wmeta->_screen = screen;
+ wmeta->padframe.size.y = getmaxy(screen);
+ wmeta->padframe.size.x = getmaxx(screen);
+ wmeta->_chain_start = 0;
+ wmeta->_chain_end = 0;
+ wmeta->pad_offset = 0;
+ WINDOW * test;
+ test = newpad(wmeta->padframe.size.y, 1);
+ if (NULL == test)
+ {
+ return 1;
+ }
+ wmeta->padframe.curses_win = test;
+ wmeta->active = 0;
+ return 0;
}
extern struct Win init_win(struct WinMeta * wmeta, char * title,
+ uint16_t height, uint16_t width,
void * data, void * func)
{
struct Win w;
- w.prev = 0;
- w.next = 0;
- w.frame.curses_win = 0;
- w.title = title;
- w.frame.size.x = 20;
- w.frame.size.y = wmeta->pad.size.y - 1;
- w.data = data;
- w.draw = func;
+ w._prev = 0;
+ w._next = 0;
+ w.frame.curses_win = 0;
+ w._title = title;
+ w.data = data;
+ w._draw = func;
+ if (width > 0)
+ {
+ w.frame.size.x = width;
+ }
+ else
+ {
+ w.frame.size.x = 1;
+ }
+ if (height > 0 && height <= wmeta->padframe.size.y - 1)
+ {
+ w.frame.size.y = height;
+ }
+ else
+ {
+ w.frame.size.y = wmeta->padframe.size.y - 1;
+ }
return w;
}
-extern void append_win(struct WinMeta * wmeta, struct Win * w)
+extern uint8_t append_win(struct WinMeta * wmeta, struct Win * w)
{
- if (0 != wmeta->chain_start)
+ if (0 != wmeta->_chain_start)
{
- w->prev = wmeta->chain_end;
- wmeta->chain_end->next = w;
+ w->_prev = wmeta->_chain_end;
+ wmeta->_chain_end->_next = w;
}
else
{
wmeta->active = w;
- wmeta->chain_start = w;
+ wmeta->_chain_start = w;
}
- wmeta->chain_end = w;
- update_wins(wmeta, w);
+ wmeta->_chain_end = w;
+ return update_wins(wmeta, w);
}
-extern void suspend_win(struct WinMeta * wmeta, struct Win * w)
+extern uint8_t suspend_win(struct WinMeta * wmeta, struct Win * w)
{
destroy_win(w);
- if (wmeta->chain_start != w)
+ if (wmeta->_chain_start != w)
{
- w->prev->next = w->next;
+ w->_prev->_next = w->_next;
}
else
{
- wmeta->chain_start = w->next;
+ wmeta->_chain_start = w->_next;
}
char pad_refitted = 0;
- if (wmeta->chain_end != w)
+ if (wmeta->_chain_end != w)
{
- w->next->prev = w->prev;
+ w->_next->_prev = w->_prev;
if (wmeta->active == w)
{
- wmeta->active = w->next;
+ wmeta->active = w->_next;
}
- update_wins(wmeta, w->next); /* Positioning of successor windows may */
- pad_refitted = 1; /* be affected / need correction. Note */
- } /* that update_wins() already refits the */
- else /* pad, voiding later need for that. */
+ if (0 != update_wins(wmeta, w->_next)) /* Positioning of successor */
+ { /* windows may be affected / */
+ return 1; /* need correction. Note that */
+ } /* update_wins() already */
+ pad_refitted = 1; /* refits the pad, voiding */
+ } /* later need for that. */
+ else
{
- wmeta->chain_end = w->prev;
+ wmeta->_chain_end = w->_prev;
if (wmeta->active == w)
{
- wmeta->active = w->prev;
+ wmeta->active = w->_prev;
}
}
- w->prev = 0;
- w->next = 0;
+ w->_prev = 0;
+ w->_next = 0;
if (0 == pad_refitted)
{
- refit_pad(wmeta);
+ return refit_pad(wmeta);
}
+ return 0;
}
{
if (new_offset >= 0
&& (new_offset < wmeta->pad_offset
- || new_offset + wmeta->pad.size.x < getmaxx(wmeta->pad.curses_win)))
+ || new_offset + wmeta->padframe.size.x
+ < getmaxx(wmeta->padframe.curses_win)))
{
wmeta->pad_offset = new_offset;
}
-extern void resize_active_win(struct WinMeta * wmeta, struct yx_uint16 size)
+extern uint8_t resize_active_win(struct WinMeta * wmeta, struct yx_uint16 size)
{
if (0 != wmeta->active
&& size.x > 0 && size.y > 0
- && size.y < wmeta->pad.size.y)
+ && size.y < wmeta->padframe.size.y)
{
wmeta->active->frame.size = size;
- update_wins(wmeta, wmeta->chain_start); /* Positioning of successor */
- } /* windows may be affected. */
-}
-
+ return update_wins(wmeta, wmeta->_chain_start); /* Following windows' */
+ } /* positioning may be */
+ return 0; /* affected. */
+} /* TODO: Why start at */
+ /* chain_start then? */
extern void cycle_active_win(struct WinMeta * wmeta, char dir)
{
if ('n' == dir)
{
- if (wmeta->active->next != 0)
+ if (wmeta->active->_next != 0)
{
- wmeta->active = wmeta->active->next;
+ wmeta->active = wmeta->active->_next;
}
else
{
- wmeta->active = wmeta->chain_start;
+ wmeta->active = wmeta->_chain_start;
}
}
else
{
- if (wmeta->active->prev != 0)
+ if (wmeta->active->_prev != 0)
{
- wmeta->active = wmeta->active->prev;
+ wmeta->active = wmeta->active->_prev;
}
else
{
- wmeta->active = wmeta->chain_end;
+ wmeta->active = wmeta->_chain_end;
}
}
}
-extern void shift_active_win(struct WinMeta * wmeta, char dir)
+extern uint8_t shift_active_win(struct WinMeta * wmeta, char dir)
{
- if (0 != wmeta->active /* No shifting with less */
- && wmeta->chain_start != wmeta->chain_end /* than one window visible. */
- && (dir == 'f' || dir == 'b'))
+ if ( 0 == wmeta->active /* No shifting with <2 */
+ || wmeta->_chain_start == wmeta->_chain_end /* windows visible or */
+ || (dir != 'f' && dir != 'b')) /* wrong direction char. */
{
- struct Win * w_shift = wmeta->active, * w_p, * w_p_next;
-
- /* Check if shifting will lead to wrapping. */
- char wrap = 0;
- if ( (dir == 'f' && w_shift == wmeta->chain_end)
- || (dir == 'b' && w_shift == wmeta->chain_start))
- {
- wrap = 1;
- }
-
- /* Suspend all visible windows. */
- uint16_t i, i_max;
- for (i_max = 1, w_p = wmeta->chain_start;
- w_p != wmeta->chain_end;
- i_max++)
- {
- w_p = w_p->next;
- }
- struct Win ** wins = malloc(i_max * sizeof(struct Win *));
- for (i = 0, w_p = wmeta->chain_start; i < i_max; i++)
- {
- w_p_next = w_p->next;
- suspend_win(wmeta, w_p);
- wins[i] = w_p;
- w_p = w_p_next;
- }
-
- /* Re-append all previously visible windows in the new order. */
- if (wrap)
- {
- if (dir == 'f')
- {
- append_win(wmeta, w_shift);
- for (i = 0; i < i_max - 1; i++)
- {
- append_win(wmeta, wins[i]);
- }
- }
- else
- {
- for (i = 1; i < i_max; i++)
- {
- append_win(wmeta, wins[i]);
- }
- append_win(wmeta, w_shift);
- }
- }
- else
- {
- for (i = 0; i < i_max; i++)
- {
- if ( (dir == 'f' && w_shift == wins[i])
- || (dir == 'b' && w_shift == wins[i+1]))
- {
- append_win(wmeta, wins[i+1]);
- append_win(wmeta, wins[i]);
- i++;
- }
- else
- {
- append_win(wmeta, wins[i]);
- }
- }
- }
- free(wins);
-
- wmeta->active = w_shift; /* TODO: Is this necessary? If so, why? */
+ return 0;
}
+ if ('f' == dir)
+ {
+ shift_win_forward(wmeta);
+ }
+ else
+ {
+ shift_win_backward(wmeta);
+ }
+ return update_wins(wmeta, wmeta->_chain_start);
}
-extern void draw_all_wins(struct WinMeta * wmeta)
+extern uint8_t draw_all_wins(struct WinMeta * wmeta)
{
/* Empty everything before filling it a-new. */
erase();
- wnoutrefresh(wmeta->screen);
- werase(wmeta->pad.curses_win);
- if (wmeta->chain_start)
+ wnoutrefresh(wmeta->_screen);
+ werase(wmeta->padframe.curses_win);
+ if (wmeta->_chain_start)
{
- /* Only draw the windows' *contents* first. */
- draw_wins (wmeta->chain_start);
-
- /* Draw windows' borders. Lines first, then line crossings / corners. */
- uint16_t n_wins = 1, i;
- struct Win * win_p = wmeta->chain_start;
- while (0 != win_p->next)
- {
- win_p = win_p->next;
- n_wins++;
- }
- struct Corners * all_corners = malloc(sizeof(struct Corners) * n_wins);
- draw_wins_borders (wmeta->chain_start, wmeta->active, all_corners, 0);
- for (i = 0; i < n_wins; i++)
- {
- mvwaddch(wmeta->pad.curses_win,
- all_corners[i].tl.y, all_corners[i].tl.x, '+');
- mvwaddch(wmeta->pad.curses_win,
- all_corners[i].tr.y, all_corners[i].tr.x, '+');
- mvwaddch(wmeta->pad.curses_win,
- all_corners[i].bl.y, all_corners[i].bl.x, '+');
- mvwaddch(wmeta->pad.curses_win,
- all_corners[i].br.y, all_corners[i].br.x, '+');
- }
- free(all_corners);
+ /* Draw windows' contents first, then their borders. */
+ draw_wins(wmeta->_chain_start);
+ draw_wins_borderlines(wmeta->_chain_start, wmeta->active,
+ wmeta->padframe.curses_win);
+ draw_wins_bordercorners(wmeta->_chain_start,wmeta->padframe.curses_win);
/* Draw virtual screen scroll hints. */
if (wmeta->pad_offset > 0)
{
- draw_scroll_hint(&wmeta->pad,
- wmeta->pad_offset, wmeta->pad_offset + 1, '<');
+ if (draw_scroll_hint(&wmeta->padframe,
+ wmeta->pad_offset, wmeta->pad_offset + 1, '<'))
+ {
+ return 1;
+ }
}
- if (wmeta->pad_offset + wmeta->pad.size.x
- < getmaxx(wmeta->pad.curses_win) - 1)
+ if (wmeta->pad_offset + wmeta->padframe.size.x
+ < getmaxx(wmeta->padframe.curses_win) - 1)
{
- draw_scroll_hint(&wmeta->pad,
- wmeta->pad_offset + wmeta->pad.size.x - 1,
- getmaxx(wmeta->pad.curses_win)
- - (wmeta->pad_offset + wmeta->pad.size.x), '>');
+ if (draw_scroll_hint(&wmeta->padframe,
+ wmeta->pad_offset + wmeta->padframe.size.x - 1,
+ getmaxx(wmeta->padframe.curses_win)
+ - (wmeta->pad_offset + wmeta->padframe.size.x),
+ '>'))
+ {
+ return 1;
+ }
}
/* Write virtual screen segment to be shown on physical screen into */
/* ncurses screen buffer. */
- pnoutrefresh(wmeta->pad.curses_win, 0, wmeta->pad_offset, 0, 0,
- wmeta->pad.size.y, wmeta->pad.size.x-1);
+ pnoutrefresh(wmeta->padframe.curses_win, 0, wmeta->pad_offset, 0, 0,
+ wmeta->padframe.size.y, wmeta->padframe.size.x-1);
}
/* Only at the end write accumulated changes to the physical screen. */
doupdate();
+ return 0;
}
-extern void draw_scroll_hint(struct Frame * frame, uint16_t pos, uint32_t dist,
- char dir)
+extern uint8_t draw_scroll_hint(struct Frame * frame, uint16_t pos,
+ uint32_t dist, char dir)
{
/* Decide on alignment (vertical/horizontal?), thereby scroll hint text. */
char * more = "more";
unit = unit_cols;
}
char * scrolldsc = malloc((4 * sizeof(char)) + strlen(more) + strlen(unit)
- + 10); /* 10 = uint32 max strlen */
+ + 10); /* 10 = uint32 max strlen */
+ if (NULL == scrolldsc)
+ {
+ return 1;
+ }
sprintf(scrolldsc, " %d %s %s ", dist, more, unit);
/* Decide on offset of the description text inside the scroll hint line. */
}
free(scrolldsc);
+ return 0;
}
projects / plomrogue / blobdiff