X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fwindows.c;fp=src%2Fwindows.c;h=0000000000000000000000000000000000000000;hb=dd9d65ee727ac7e95801da0f8b5bae7009811802;hp=42f285903e502891168fd279536765cfbb2163cc;hpb=c3d87a1dee96775443fdf73c53e1350af7ca5fc2;p=plomrogue

diff --git a/src/windows.c b/src/windows.c
deleted file mode 100644
index 42f2859..0000000
--- a/src/windows.c
+++ /dev/null
@@ -1,659 +0,0 @@
-/* windows.c */
-
-#include "windows.h"
-#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() */
-
-
-
-/* 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. Use place_win() for the positioning algorithm.
- */
-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_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_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()
-{
-    /* Determine rightmost window column. */
-    uint32_t lastwcol = 0;
-    struct Win * wp = world.wmeta->chain_start;
-    while (wp != 0)
-    {
-        if ((uint32_t) wp->start.x + (uint32_t) wp->framesize.x > lastwcol + 1)
-        {
-            lastwcol = (uint32_t) wp->start.x + (uint32_t) wp->framesize.x - 1;
-        }
-        wp = wp->next;
-    }
-
-    /* Only resize the pad if the rightmost window column has changed. */
-    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)
-    {
-        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 Win * w)
-{
-    place_win(w);
-    refit_pad();
-    if (0 != w->next)
-    {
-        update_wins(w->next);
-    }
-}
-
-
-
-static void place_win(struct Win * w)
-{
-    /* 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)
-    {
-
-        /* 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->framesize.x + 1;
-
-        /* 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 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_test = w->prev;
-            struct Win * w_thr;
-            while (w_test != w_top)
-            {
-                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)
-                {
-                    w->start.x = w_test->start.x + w_test->framesize.x + 1;
-                    w->start.y = w_thr_bottom + 1;
-                    break;
-                }
-                w_test = w_thr;
-            }
-        }
-    }
-}
-
-
-
-static void scroll_hint(struct yx_uint16 fsize, char dir, uint16_t dist,
-                        char * unit, struct yx_uint16 start)
-{
-    /* 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)
-{
-    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)
-    {
-        return draw_wins(w->next);
-    }
-}
-
-
-
-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->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_borderlines(struct Win * w)
-{
-    draw_win_borderlines(w);
-    if (0 != w->next)
-    {
-        draw_wins_borderlines(w->next);
-    }
-}
-
-
-
-static void draw_wins_bordercorners(struct Win * w)
-{
-    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);
-    }
-}
-
-
-
-static void shift_win_forward()
-{
-    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;
-    }
-}
-
-
-
-static void shift_win_backward()
-{
-    if (world.wmeta->active == world.wmeta->chain_start)
-    {
-        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
-    {
-        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;
-    }
-    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 free_winmeta_and_endwin()
-{
-    delwin(world.wmeta->pad);
-    free(world.wmeta);
-    endwin();
-}
-
-
-
-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
-    {
-        world.wmeta->chain_start = w->next;
-    }
-    uint8_t pad_refitted = 0;
-    if (world.wmeta->chain_end != w)
-    {
-        w->next->prev = w->prev;
-        if (world.wmeta->active == w)
-        {
-            world.wmeta->active = w->next;
-        }
-        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.            */
-    {
-        world.wmeta->chain_end = w->prev;
-        if (world.wmeta->active == w)
-        {
-            world.wmeta->active = w->prev;
-        }
-    }
-    w->prev = 0;
-    w->next = 0;
-    if (0 == pad_refitted)
-    {
-        refit_pad();
-    }
-}
-
-
-
-extern void reset_pad_offset(uint16_t new_offset)
-{
-    if (new_offset >= 0
-        && (new_offset < world.wmeta->pad_offset
-            || new_offset + world.wmeta->padsize.x < getmaxx(world.wmeta->pad)))
-    {
-        world.wmeta->pad_offset = new_offset;
-    }
-}
-
-
-
-extern void resize_active_win(struct yx_uint16 size)
-{
-    if (0 != world.wmeta->active
-        && size.x > 0 && size.y > 0 && size.y < world.wmeta->padsize.y)
-    {
-        world.wmeta->active->framesize = size;
-        update_wins(world.wmeta->active);         /* Positioning of following */
-    }                                             /* windows may be affected. */
-}
-
-
-
-extern void cycle_active_win(char dir)
-{
-    if (0 != world.wmeta->active)
-    {
-        if ('f' == dir)
-        {
-            if (world.wmeta->active->next != 0)
-            {
-                world.wmeta->active = world.wmeta->active->next;
-            }
-            else
-            {
-                world.wmeta->active = world.wmeta->chain_start;
-            }
-        }
-        else
-        {
-            if (world.wmeta->active->prev != 0)
-            {
-                world.wmeta->active = world.wmeta->active->prev;
-            }
-            else
-            {
-                world.wmeta->active = world.wmeta->chain_end;
-            }
-        }
-    }
-}
-
-
-
-extern void shift_active_win(char dir)
-{
-    if (   0 == world.wmeta->active  /* No shifting with < 2 windows visible. */
-        || world.wmeta->chain_start == world.wmeta->chain_end)
-    {
-        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()
-{
-    /* Empty everything before filling it a-new. */
-    erase();
-    wnoutrefresh(world.wmeta->screen);
-    werase(world.wmeta->pad);
-    if (world.wmeta->chain_start)
-    {
-
-        /* 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 (world.wmeta->pad_offset > 0)
-        {
-            padscroll_hint('<', world.wmeta->pad_offset + 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)
-        {
-            padscroll_hint('>', size_x - right_edge);
-        }
-
-        /* 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();
-}