/* windows.c */
#include "windows.h"
-#include <stdint.h> /* for uint16_t, uint32_t */
-#include <ncurses.h> /* for LOTS of stuff */
-#include <stdlib.h> /* for malloc(), free() */
-#include <string.h> /* for strlen(), 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;
-};
+#include <stdint.h> /* for uint8_t, uint16_t, uint32_t, UINT16_MAX */
+#include <ncurses.h> /* for typedefs chtype, wresize(), getmaxx(), getmaxy(),
+ * delwin(), mvwaddch(), mvwaddstr(), newpad(), erase(),
+ * wnoutrefresh(), werase(), pnoutrefresh(), doupdate()
+ */
+#include <stdlib.h> /* for free() */
+#include <string.h> /* for strlen(), strnlen(), memcpy() */
+#include "yx_uint16.h" /* for struct yx_uint16 */
+#include "misc.h" /* for center_offset(), try_malloc() */
+#include "main.h" /* for world global */
+#include "rexit.h" /* for exit_err() */
-/* Fit virtual screen's width to minimum width demanded by current windows'
- * geometries.
- */
-static void refit_pad(struct WinMeta * wmeta);
-
-
+/* Make virtual screen just wide enough to contain all visible windows. */
+static void refit_pad();
/* Update geometry (sizes, positions) of window "w" and its successors in the
- * window chain. For the positioning algorithm place_win() is used.
+ * window chain. Use place_win() for the positioning algorithm.
*/
-static void update_wins(struct WinMeta * wmeta, struct Win * w);
-static void place_win(struct WinMeta * wmeta, struct Win * w);
-
-
-
-/* Destroy window "w"'s ncurses window (and set w.Frame.curses_win to 0). */
-static void destroy_win(struct Win * w);
-
-
+static void update_wins(struct Win * w);
+static void place_win(struct Win * w);
+
+/* Draw scroll hint (a line saying that there are "dist" more elements of "unit"
+ * further into the direction symbolized by "dir") into virtual screen, onto an
+ * appropriate edge of a window or the screen; the left/right edge if "dir" is
+ * "<"/">", or the top/bottom edge if it is "^"/"v". "start" be either the start
+ * coordinate of a window's frame, or .y=0, .x=wm->pad_offset for the virtual
+ * screen. winscroll_hint() and padscroll_hint() are wrappers to both cases.
+ */
+static void scroll_hint(struct yx_uint16 fsize, char dir, uint16_t dist,
+ char * unit, struct yx_uint16 start);
+static void winscroll_hint(struct Win * w, char dir, uint16_t dist);
+static void padscroll_hint(char dir, uint16_t dist);
/* Draw contents of all windows in window chain from window "w" onwards. */
static void draw_wins(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_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_win_borderlines() draws vertical/horizontal borders of window "w" sans
+ * corners into the virtual screen. It draws the top border line as the windows'
+ * title bar (highlighted if the window is selected as active). It is called
+ * recursively by draw_wins_borderlines() on all windows from "w" on.
+ * draw_wins_bordercorners() draws the border corners of "w" and 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);
+static void draw_wins_borderlines(struct Win * w);
+static void draw_wins_bordercorners(struct Win * w);
+
+/* Shift active window forwards / backwards in window chain. */
+static void shift_win_forward();
+static void shift_win_backward();
-static void refit_pad(struct WinMeta * wmeta)
+static void refit_pad()
{
/* Determine rightmost window column. */
- uint16_t lastwincol = 0;
- struct Win * w_p = wmeta->chain_start;
- while (w_p != 0)
+ uint32_t lastwcol = 0;
+ struct Win * wp = world.wmeta->chain_start;
+ while (wp != 0)
{
- if (w_p->start.x + w_p->frame.size.x > lastwincol + 1)
+ if ((uint32_t) wp->start.x + (uint32_t) wp->framesize.x > lastwcol + 1)
{
- lastwincol = w_p->start.x + w_p->frame.size.x - 1;
+ lastwcol = (uint32_t) wp->start.x + (uint32_t) wp->framesize.x - 1;
}
- w_p = w_p->next;
+ wp = wp->next;
}
/* Only resize the pad if the rightmost window column has changed. */
- if (getmaxx(wmeta->pad.curses_win) != lastwincol)
+ char * err_s = "refit_pad() extends virtual screen beyond legal sizes.";
+ char * err_m = "refit_pad() triggers memory alloc error via wresize().";
+ if (getmaxx(world.wmeta->pad) + 1 != lastwcol)
{
- wresize(wmeta->pad.curses_win,
- getmaxy(wmeta->pad.curses_win), lastwincol + 2);
+ uint8_t t = (lastwcol + 2 > UINT16_MAX);
+ exit_err(t, err_s);
+ t = wresize(world.wmeta->pad, getmaxy(world.wmeta->pad), lastwcol + 2);
+ exit_err(t, err_m);
}
}
-static void update_wins (struct WinMeta * wmeta, struct Win * w)
+static void update_wins(struct Win * w)
{
- if (0 != w->frame.curses_win)
- {
- 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);
+ place_win(w);
+ refit_pad();
if (0 != w->next)
{
- update_wins (wmeta, w->next);
+ update_wins(w->next);
}
}
-static void place_win (struct WinMeta * wmeta, struct Win * w)
+static void place_win(struct Win * w)
{
- /* First window goes into the upper-left corner. */
+ /* If w is first window, it goes into the top left corner. */
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. */
+ /* If not, fit w's top left to top right of last top predecessor. */
struct Win * w_top = w->prev;
while (w_top->start.y != 1)
{
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->framesize.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)
+ /* Fit w's top left to bottom left of its ->prev if enough space. */
+ uint16_t w_prev_maxy = w->prev->start.y + w->prev->framesize.y;
+ if ( w->framesize.x <= w->prev->framesize.x
+ && w->framesize.y < world.wmeta->padsize.y - w_prev_maxy)
{
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
- * predecessor window that thrones over enough empty space.
+ /* Failing that, try to fit w' top left to the top right of the last
+ * predecessor w_test 1) not followed by windows with a left corner
+ * further rightwards than its own 2) with enough space rightwards for w
+ * until the bottom right of w_thr directly throning over it 3) and with
+ * this same space extending far enough to the bottom for fitting in w.
*/
else
{
- struct Win * w_up = w->prev;
- struct Win * w_upup = w_up;
- uint16_t widthdiff;
- while (w_up != w_top)
+ struct Win * w_test = w->prev;
+ struct Win * w_thr;
+ while (w_test != w_top)
{
- w_upup = w_up->prev;
- while (1)
+ w_thr = w_test->prev;
+ for (; w_test->start.y <= w_thr->start.y; w_thr = w_thr->prev);
+ uint16_t w_thr_bottom = w_thr->start.y + w_thr->framesize.y;
+ uint16_t free_width = (w_thr->start.x + w_thr->framesize.x)
+ - (w_test->start.x + w_test->framesize.x);
+ if ( w->framesize.y < world.wmeta->padsize.y - w_thr_bottom
+ && w->framesize.x < free_width)
{
- if (w_up->start.y != w_upup->start.y)
- {
- break;
- }
- w_upup = w_upup->prev;
- }
- 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
- && 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_test->start.x + w_test->framesize.x + 1;
+ w->start.y = w_thr_bottom + 1;
break;
}
- w_up = w_upup;
+ w_test = w_thr;
}
}
}
-static void destroy_win (struct Win * w)
+static void scroll_hint(struct yx_uint16 fsize, char dir, uint16_t dist,
+ char * unit, struct yx_uint16 start)
{
- delwin(w->frame.curses_win);
- w->frame.curses_win = 0;
+ /* Decide on alignment (vertical/horizontal?), thereby hint text space. */
+ char * more = "more";
+ uint16_t dsc_space = fsize.x;
+ if ('<' == dir || '>' == dir)
+ {
+ dsc_space = fsize.y;
+ } /* vv-- 10 = max strlen for uint16_t */
+ char scrolldsc[1 + strlen(more) + 1 + 10 + 1 + strlen(unit) + 1 + 1];
+ sprintf(scrolldsc, " %d %s %s ", dist, more, unit);
+
+ /* Decide on offset of the description text inside the scroll hint line. */
+ uint16_t dsc_offset = 1;
+ if (dsc_space > strlen(scrolldsc) + 1)
+ {
+ dsc_offset = (dsc_space - strlen(scrolldsc)) / 2;
+ }
+
+ /* Draw scroll hint line as dir symbols bracketing description text. */
+ uint16_t draw_offset = 0;
+ if ('>' == dir)
+ {
+ draw_offset = fsize.x - 1;
+ }
+ else if ('v' == dir)
+ {
+ draw_offset = fsize.y - 1;
+ }
+ uint16_t q = 0;
+ for (; q < dsc_space; q++)
+ {
+ chtype c = dir | A_REVERSE;
+ if (q >= dsc_offset && q < strlen(scrolldsc) + dsc_offset)
+ {
+ c = scrolldsc[q - dsc_offset] | A_REVERSE;
+ }
+ if ('<' == dir || '>' == dir)
+ {
+ mvwaddch(world.wmeta->pad, start.y + q, start.x + draw_offset, c);
+ continue;
+ }
+ mvwaddch(world.wmeta->pad, start.y + draw_offset, start.x + q, c);
+ }
+}
+
+
+static void padscroll_hint(char dir, uint16_t dist)
+{
+ struct yx_uint16 start;
+ start.y = 0;
+ start.x = world.wmeta->pad_offset;
+ scroll_hint(world.wmeta->padsize, dir, dist, "columns", start);
+}
+
+
+
+static void winscroll_hint(struct Win * w, char dir, uint16_t dist)
+{
+ char * unit = "lines";
+ if ('<' == dir || '>' == dir)
+ {
+ unit = "columns";
+ }
+ struct yx_uint16 start = w->start;
+ scroll_hint(w->framesize, dir, dist, unit, start);
}
-static void draw_wins (struct Win * w)
+static void draw_wins(struct Win * w)
{
w->draw(w);
+ uint16_t size_y = w->winmapsize.y;
+ uint16_t size_x = w->winmapsize.x;
+ uint16_t offset_y = center_offset(w->center.y, size_y, w->framesize.y);
+ uint16_t offset_x = center_offset(w->center.x, size_x, w->framesize.x);
+ uint16_t y, x;
+ for (y = offset_y; y < w->framesize.y + offset_y && y < size_y; y++)
+ {
+ for (x = offset_x; x < w->framesize.x + offset_x && x < size_x; x++)
+ {
+ chtype ch = w->winmap[(y * w->winmapsize.x) + x];
+ mvwaddch(world.wmeta->pad, w->start.y + (y - offset_y),
+ w->start.x + (x - offset_x), ch);
+ }
+ }
+ free(w->winmap);
+ w->winmap = NULL;
+ w->winmapsize.y = 0;
+ w->winmapsize.x = 0;
+ if (offset_y > 0)
+ {
+ winscroll_hint(w, '^', offset_y + 1);
+ }
+ if (size_y > offset_y + w->framesize.y)
+ {
+ winscroll_hint(w, 'v', size_y - ((offset_y + w->framesize.y) - 1));
+ }
+ if (offset_x > 0)
+ {
+ winscroll_hint(w, '<', offset_x + 1);
+ }
+ if (size_x > offset_x + w->framesize.x)
+ {
+ winscroll_hint(w, '>', size_x - ((offset_x + w->framesize.x) - 1));
+ }
if (0 != w->next)
{
- draw_wins (w->next);
+ return draw_wins(w->next);
}
}
-static void draw_win_borders(struct Win * w, char active)
+static void draw_win_borderlines(struct Win * w)
{
- /* 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 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 = '$';
- }
- memcpy(title + 1, w->title, length_visible);
- title[0] = title[length_visible + 1] = decoration;
- title[length_visible + 2] = '\0';
- mvwaddstr(wgetparent(w->frame.curses_win),
- w->start.y - 1, w->start.x + title_offset, title);
- }
+ /* Draw vertical and horizontal border lines. */
+ uint16_t y, x;
+ for (y = w->start.y; y <= w->start.y + w->framesize.y; y++)
+ {
+ mvwaddch(world.wmeta->pad, y, w->start.x - 1, '|');
+ mvwaddch(world.wmeta->pad, y, w->start.x + w->framesize.x, '|');
+ }
+ for (x = w->start.x; x <= w->start.x + w->framesize.x; x++)
+ {
+ mvwaddch(world.wmeta->pad, w->start.y - 1, x, '-');
+ mvwaddch(world.wmeta->pad, w->start.y + w->framesize.y, x, '-');
+ }
+
+ /* Draw as much as possible of the title into center of top border line. */
+ char min_title_length_visible = 3; /* min. 1 char + 2 padding/decoration */
+ if (w->framesize.x >= min_title_length_visible)
+ {
+ uint16_t title_offset = 0;
+ if (w->framesize.x > strlen(w->title) + 2)
+ {
+ title_offset = (w->framesize.x - (strlen(w->title) + 2)) / 2;
+ } /* +2 is for padding/decoration */
+ uint16_t length_visible = strnlen(w->title, w->framesize.x - 2);
+ char title[length_visible + 3];
+ char decoration = ' ';
+ if (w == world.wmeta->active)
+ {
+ decoration = '$';
+ }
+ memcpy(title + 1, w->title, length_visible);
+ title[0] = title[length_visible + 1] = decoration;
+ title[length_visible + 2] = '\0';
+ mvwaddstr(world.wmeta->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)
{
- 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;
+ draw_win_borderlines(w);
if (0 != w->next)
{
- draw_wins_borders (w->next, w_active, corners, i + 1);
+ draw_wins_borderlines(w->next);
}
}
-extern struct WinMeta init_win_meta(WINDOW * screen)
+static void draw_wins_bordercorners(struct Win * w)
{
- 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;
+ mvwaddch(world.wmeta->pad, w->start.y - 1, w->start.x - 1, '+');
+ mvwaddch(world.wmeta->pad, w->start.y - 1, w->start.x + w->framesize.x,'+');
+ mvwaddch(world.wmeta->pad, w->start.y + w->framesize.y, w->start.x - 1,'+');
+ mvwaddch(world.wmeta->pad, w->start.y + w->framesize.y,
+ w->start.x + w->framesize.x, '+');
+ if (0 != w->next)
+ {
+ draw_wins_bordercorners(w->next);
+ }
}
-extern struct Win init_win(struct WinMeta * wmeta, char * title,
- void * data, void * func)
+static void shift_win_forward()
{
- 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;
- return w;
+ if (world.wmeta->active == world.wmeta->chain_end)
+ {
+ world.wmeta->chain_end = world.wmeta->active->prev;
+ world.wmeta->chain_end->next = 0;
+ world.wmeta->active->next = world.wmeta->chain_start;
+ world.wmeta->active->next->prev = world.wmeta->active;
+ world.wmeta->chain_start = world.wmeta->active;
+ world.wmeta->chain_start->prev = 0;
+ }
+ else
+ {
+ struct Win * old_prev = world.wmeta->active->prev;
+ struct Win * old_next = world.wmeta->active->next;
+ if (world.wmeta->chain_end == world.wmeta->active->next)
+ {
+ world.wmeta->chain_end = world.wmeta->active;
+ world.wmeta->active->next = 0;
+ }
+ else
+ {
+ world.wmeta->active->next = old_next->next;
+ world.wmeta->active->next->prev = world.wmeta->active;
+ }
+ if (world.wmeta->chain_start == world.wmeta->active)
+ {
+ world.wmeta->chain_start = old_next;
+ }
+ else
+ {
+ old_prev->next = old_next;
+ }
+ old_next->prev = old_prev;
+ old_next->next = world.wmeta->active;
+ world.wmeta->active->prev = old_next;
+ }
}
-extern void append_win(struct WinMeta * wmeta, struct Win * w)
+static void shift_win_backward()
{
- if (0 != wmeta->chain_start)
+ if (world.wmeta->active == world.wmeta->chain_start)
{
- w->prev = wmeta->chain_end;
- wmeta->chain_end->next = w;
+ world.wmeta->chain_start = world.wmeta->active->next;
+ world.wmeta->chain_start->prev = 0;
+ world.wmeta->active->prev = world.wmeta->chain_end;
+ world.wmeta->active->prev->next = world.wmeta->active;
+ world.wmeta->chain_end = world.wmeta->active;
+ world.wmeta->chain_end->next = 0;
}
else
{
- wmeta->active = w;
- wmeta->chain_start = w;
+ struct Win * old_prev = world.wmeta->active->prev;
+ struct Win * old_next = world.wmeta->active->next;
+ if (world.wmeta->chain_start == world.wmeta->active->prev)
+ {
+ world.wmeta->chain_start = world.wmeta->active;
+ world.wmeta->active->prev = 0;
+ }
+ else
+ {
+ world.wmeta->active->prev = old_prev->prev;
+ world.wmeta->active->prev->next = world.wmeta->active;
+ }
+ if (world.wmeta->chain_end == world.wmeta->active)
+ {
+ world.wmeta->chain_end = old_prev;
+ }
+ else
+ {
+ old_next->prev = old_prev;
+ }
+ old_prev->next = old_next;
+ old_prev->prev = world.wmeta->active;
+ world.wmeta->active->next = old_prev;
+ }
+}
+
+
+
+extern void init_win_meta()
+{
+ char * f_name = "init_win_meta()";
+ char * err_s = "init_win_meta() creates virtual screen beyond legal size.";
+ char * err_m = "init_win_meta() triggers memory alloc error via newpad().";
+ world.wmeta = try_malloc(sizeof(struct WinMeta), f_name);
+ world.wmeta->screen = initscr();
+ uint32_t maxy_test = getmaxy(world.wmeta->screen);
+ uint32_t maxx_test = getmaxx(world.wmeta->screen);
+ exit_err(maxy_test > UINT16_MAX || maxx_test > UINT16_MAX, err_s);
+ world.wmeta->padsize.y = maxy_test;
+ world.wmeta->padsize.x = maxx_test;
+ world.wmeta->chain_start = 0;
+ world.wmeta->chain_end = 0;
+ world.wmeta->pad_offset = 0;
+ world.wmeta->pad = newpad(world.wmeta->padsize.y, 1);
+ exit_err(NULL == world.wmeta->pad, err_m);
+ world.wmeta->active = 0;
+}
+
+
+
+extern void init_win(struct Win ** wp, char * title, int16_t height,
+ int16_t width, void * func)
+{
+ char * f_name = "init_win()";
+ struct Win * w = try_malloc(sizeof(struct Win), f_name);
+ w->prev = 0;
+ w->next = 0;
+ w->winmapsize.y = 0;
+ w->winmapsize.x = 0;
+ w->winmap = NULL;
+ w->title = try_malloc(strlen(title) + 1, f_name);
+ sprintf(w->title, "%s", title);
+ w->draw = func;
+ w->center.y = 0;
+ w->center.x = 0;
+ if (0 < width)
+ {
+ w->framesize.x = width;
}
- wmeta->chain_end = w;
- update_wins(wmeta, w);
+ else if (0 >= width)
+ {
+ w->framesize.x = world.wmeta->padsize.x + width;
+ }
+ if (0 < height && height <= world.wmeta->padsize.y - 1)
+ {
+ w->framesize.y = height;
+ }
+ else if (0 >= height && world.wmeta->padsize.y + (height - 1) > 0)
+ {
+ w->framesize.y = world.wmeta->padsize.y + (height - 1);
+ }
+ *wp = w;
}
-extern void suspend_win(struct WinMeta * wmeta, struct Win * w)
+extern void free_winmeta_and_endwin()
{
- destroy_win(w);
+ delwin(world.wmeta->pad);
+ free(world.wmeta);
+ endwin();
+}
- if (wmeta->chain_start != w)
+
+
+extern void free_win(struct Win * win)
+{
+ free(win->title);
+ free(win);
+}
+
+
+
+extern void append_win(struct Win * w)
+{
+ if (0 != world.wmeta->chain_start)
+ {
+ w->prev = world.wmeta->chain_end;
+ world.wmeta->chain_end->next = w;
+ }
+ else
+ {
+ world.wmeta->active = w;
+ world.wmeta->chain_start = w;
+ }
+ world.wmeta->chain_end = w;
+ update_wins(w);
+}
+
+
+
+extern void suspend_win(struct Win * w)
+{
+ if (world.wmeta->chain_start != w)
{
w->prev->next = w->next;
}
else
{
- wmeta->chain_start = w->next;
+ world.wmeta->chain_start = w->next;
}
- char pad_refitted = 0;
- if (wmeta->chain_end != w)
+ uint8_t pad_refitted = 0;
+ if (world.wmeta->chain_end != w)
{
w->next->prev = w->prev;
- if (wmeta->active == w)
+ if (world.wmeta->active == w)
{
- wmeta->active = w->next;
+ world.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. */
+ update_wins(w->next); /* Positioning of successor windows may be */
+ pad_refitted = 1; /* affected / need correction. Note that */
+ } /* update_wins() already refits the pad, */
+ else /* voiding later need for that. */
{
- wmeta->chain_end = w->prev;
- if (wmeta->active == w)
+ world.wmeta->chain_end = w->prev;
+ if (world.wmeta->active == w)
{
- wmeta->active = w->prev;
+ world.wmeta->active = w->prev;
}
}
-
w->prev = 0;
w->next = 0;
-
if (0 == pad_refitted)
{
- refit_pad(wmeta);
+ refit_pad();
}
}
-extern void reset_pad_offset(struct WinMeta * wmeta, uint16_t new_offset)
+extern void reset_pad_offset(uint16_t new_offset)
{
if (new_offset >= 0
- && (new_offset < wmeta->pad_offset
- || new_offset + wmeta->pad.size.x < getmaxx(wmeta->pad.curses_win)))
+ && (new_offset < world.wmeta->pad_offset
+ || new_offset + world.wmeta->padsize.x < getmaxx(world.wmeta->pad)))
{
- wmeta->pad_offset = new_offset;
+ world.wmeta->pad_offset = new_offset;
}
}
-extern void resize_active_win(struct WinMeta * wmeta, struct yx_uint16 size)
+extern void resize_active_win(struct yx_uint16 size)
{
- if (0 != wmeta->active
- && size.x > 0 && size.y > 0
- && size.y < wmeta->pad.size.y)
+ if (0 != world.wmeta->active
+ && size.x > 0 && size.y > 0 && size.y < world.wmeta->padsize.y)
{
- wmeta->active->frame.size = size;
- update_wins(wmeta, wmeta->chain_start); /* Positioning of successor */
+ world.wmeta->active->framesize = size;
+ update_wins(world.wmeta->active); /* Positioning of following */
} /* windows may be affected. */
}
-extern void cycle_active_win(struct WinMeta * wmeta, char dir)
+extern void cycle_active_win(char dir)
{
- if (0 != wmeta->active)
+ if (0 != world.wmeta->active)
{
- if ('n' == dir)
+ if ('f' == dir)
{
- if (wmeta->active->next != 0)
+ if (world.wmeta->active->next != 0)
{
- wmeta->active = wmeta->active->next;
+ world.wmeta->active = world.wmeta->active->next;
}
else
{
- wmeta->active = wmeta->chain_start;
+ world.wmeta->active = world.wmeta->chain_start;
}
}
else
{
- if (wmeta->active->prev != 0)
+ if (world.wmeta->active->prev != 0)
{
- wmeta->active = wmeta->active->prev;
+ world.wmeta->active = world.wmeta->active->prev;
}
else
{
- wmeta->active = wmeta->chain_end;
+ world.wmeta->active = world.wmeta->chain_end;
}
}
}
-extern void shift_active_win(struct WinMeta * wmeta, char dir)
+extern void shift_active_win(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 == world.wmeta->active /* No shifting with < 2 windows visible. */
+ || world.wmeta->chain_start == world.wmeta->chain_end)
{
- 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;
+ }
+ if ('f' == dir)
+ {
+ shift_win_forward();
+ update_wins(world.wmeta->chain_start);
+ return;
}
+ shift_win_backward();
+ update_wins(world.wmeta->chain_start);
}
-extern void draw_all_wins(struct WinMeta * wmeta)
+extern void draw_all_wins()
{
/* Empty everything before filling it a-new. */
erase();
- wnoutrefresh(wmeta->screen);
- werase(wmeta->pad.curses_win);
- if (wmeta->chain_start)
+ wnoutrefresh(world.wmeta->screen);
+ werase(world.wmeta->pad);
+ if (world.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' borders first, then windows. */
+ draw_wins_borderlines(world.wmeta->chain_start);
+ draw_wins_bordercorners(world.wmeta->chain_start);
+ draw_wins(world.wmeta->chain_start);
/* Draw virtual screen scroll hints. */
- if (wmeta->pad_offset > 0)
+ if (world.wmeta->pad_offset > 0)
{
- draw_scroll_hint(&wmeta->pad,
- wmeta->pad_offset, wmeta->pad_offset + 1, '<');
+ padscroll_hint('<', world.wmeta->pad_offset + 1);
}
- if (wmeta->pad_offset + wmeta->pad.size.x
- < getmaxx(wmeta->pad.curses_win) - 1)
+ uint16_t size_x = getmaxx(world.wmeta->pad);
+ uint16_t right_edge = world.wmeta->pad_offset + world.wmeta->padsize.x;
+ if (right_edge < size_x - 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), '>');
+ padscroll_hint('>', size_x - right_edge);
}
- /* 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);
+ /* Write pad segment to be shown on physical screen to screen buffer. */
+ pnoutrefresh(world.wmeta->pad, 0, world.wmeta->pad_offset, 0, 0,
+ world.wmeta->padsize.y, world.wmeta->padsize.x - 1);
}
/* Only at the end write accumulated changes to the physical screen. */
doupdate();
}
-
-
-
-extern void 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";
- char * unit_cols = "columns";
- char * unit_rows = "lines";
- uint16_t dsc_space = frame->size.x;
- char * unit = unit_rows;
- if ('<' == dir || '>' == dir)
- {
- dsc_space = frame->size.y;
- unit = unit_cols;
- }
- char * scrolldsc = malloc((4 * sizeof(char)) + strlen(more) + strlen(unit)
- + 10); /* 10 = uint32 max strlen */
- sprintf(scrolldsc, " %d %s %s ", dist, more, unit);
-
- /* Decide on offset of the description text inside the scroll hint line. */
- char offset = 1, q;
- if (dsc_space > strlen(scrolldsc) + 1)
- {
- offset = (dsc_space - strlen(scrolldsc)) / 2;
- }
-
- /* Draw scroll hint line as dir symbols bracketing description text. */
- chtype symbol;
- for (q = 0; q < dsc_space; q++)
- {
- if (q >= offset && q < strlen(scrolldsc) + offset)
- {
- symbol = scrolldsc[q - offset] | A_REVERSE;
- }
- else
- {
- symbol = dir | A_REVERSE;
- }
- if ('<' == dir || '>' == dir)
- {
- mvwaddch(frame->curses_win, q, pos, symbol);
- }
- else
- {
- mvwaddch(frame->curses_win, pos, q, symbol);
- }
- }
-
- free(scrolldsc);
-}
projects / plomrogue / blobdiff