X-Git-Url: https://plomlompom.com/repos/feed.xml?a=blobdiff_plain;f=src%2Fwindows.c;h=8af2ba259411500fa73d3c22ce4483d458bb4051;hb=bed76e36029b889501cf45e6852830fbfa35ea11;hp=ef7a30dfade86df3759e6e44c3c0181f90205ed8;hpb=7815e738f77aad4e918c84a89aa21f7ae683ebab;p=plomrogue diff --git a/src/windows.c b/src/windows.c index ef7a30d..8af2ba2 100644 --- a/src/windows.c +++ b/src/windows.c @@ -1,25 +1,30 @@ /* windows.c */ #include "windows.h" -#include /* for uint16_t, uint32_t */ -#include /* for LOTS of stuff */ +#include /* for uint8_t, uint16_t, uint32_t */ +#include /* for typedefs WINDOW, chtype, wresize(), getmaxx(), */ + /* getmaxy(), supbad(), delwin(), mvwaddch(), */ + /* mvwaddstr(), newpad(), wnoutrefres(), erase(), */ + /* werase(), pnoutrefresh(), doupdate() */ #include /* for malloc(), free() */ -#include /* for strlen(), memcpy() */ +#include /* for strlen(), strnlen(), memcpy() */ #include "yx_uint16.h" /* for yx_uint16 coordinates */ /* 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); @@ -53,7 +58,7 @@ static void draw_wins_bordercorners(struct Win * w, WINDOW * pad); -static void refit_pad(struct WinMeta * wmeta) +static uint8_t refit_pad(struct WinMeta * wmeta) { /* Determine rightmost window column. */ uint16_t lastwincol = 0; @@ -70,33 +75,44 @@ static void refit_pad(struct WinMeta * wmeta) /* Only resize the pad if the rightmost window column has changed. */ if (getmaxx(wmeta->padframe.curses_win) != lastwincol) { - wresize(wmeta->padframe.curses_win, - getmaxy(wmeta->padframe.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->padframe.curses_win, - w->frame.size.y, w->frame.size.x, - w->start.y, w->start.x); + 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) + { + return 1; + } + w->frame.curses_win = test; if (0 != w->next) { - update_wins (wmeta, 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; @@ -162,7 +178,7 @@ static void place_win (struct WinMeta * wmeta, struct Win * w) -static void destroy_win (struct Win * w) +static void destroy_win(struct Win * w) { delwin(w->frame.curses_win); w->frame.curses_win = 0; @@ -170,12 +186,12 @@ static void destroy_win (struct Win * w) -static void draw_wins (struct Win * w) +static void draw_wins(struct Win * w) { w->draw(w); if (0 != w->next) { - draw_wins (w->next); + draw_wins(w->next); } } @@ -232,7 +248,7 @@ static void draw_wins_borderlines(struct Win * w, struct Win * w_active, draw_win_borderlines(w, active, pad); if (0 != w->next) { - draw_wins_borderlines (w->next, w_active, pad); + draw_wins_borderlines(w->next, w_active, pad); } } @@ -253,18 +269,23 @@ static void draw_wins_bordercorners(struct Win * w, WINDOW * pad) -extern struct WinMeta init_win_meta(WINDOW * screen) +extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta * wmeta) { - 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; - wmeta.padframe.curses_win = newpad(wmeta.padframe.size.y, 1); - wmeta.active = 0; - return 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; } @@ -301,7 +322,7 @@ extern struct Win init_win(struct WinMeta * wmeta, char * title, -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) { @@ -314,12 +335,12 @@ extern void append_win(struct WinMeta * wmeta, struct Win * w) wmeta->chain_start = w; } wmeta->chain_end = w; - update_wins(wmeta, 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); @@ -339,10 +360,13 @@ extern void suspend_win(struct WinMeta * wmeta, struct Win * w) { 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() */ + pad_refitted = 1; /* already refits the pad, */ + } /* voiding later need for that. */ + else { wmeta->chain_end = w->prev; if (wmeta->active == w) @@ -356,8 +380,9 @@ extern void suspend_win(struct WinMeta * wmeta, struct Win * w) if (0 == pad_refitted) { - refit_pad(wmeta); + return refit_pad(wmeta); } + return 0; } @@ -375,17 +400,18 @@ extern void reset_pad_offset(struct WinMeta * wmeta, uint16_t 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->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); /* Succeeding windows' */ + } /* positioning may be */ + return 0; /* affected. */ +} /* TODO: Why start at */ + /* chain_start then? */ extern void cycle_active_win(struct WinMeta * wmeta, char dir) @@ -419,7 +445,7 @@ extern void cycle_active_win(struct WinMeta * wmeta, char dir) -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. */ @@ -444,6 +470,10 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir) i_max++; } struct Win ** wins = malloc(i_max * sizeof(struct Win *)); + if (NULL == wins) + { + return 1; + } for (i = 0, w_p = wmeta->chain_start; i < i_max; i++) @@ -459,19 +489,31 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir) { if (dir == 'f') { - append_win(wmeta, w_shift); + if (0 != append_win(wmeta, w_shift)) + { + return 1; + } for (i = 0; i < i_max - 1; i++) { - append_win(wmeta, wins[i]); + if (0 != append_win(wmeta, wins[i])) + { + return 1; + } } } else { for (i = 1; i < i_max; i++) { - append_win(wmeta, wins[i]); + if (0 != append_win(wmeta, wins[i])) + { + return 1; + } + } + if (0 != append_win(wmeta, w_shift)) + { + return 1; } - append_win(wmeta, w_shift); } } else @@ -481,13 +523,19 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir) 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]); + if ( 0 != append_win(wmeta, wins[i+1]) + || 0 != append_win(wmeta, wins[i])) + { + return 1; + } i++; } else { - append_win(wmeta, wins[i]); + if (0 != append_win(wmeta, wins[i])) + { + return 1; + } } } } @@ -495,6 +543,7 @@ extern void shift_active_win(struct WinMeta * wmeta, char dir) wmeta->active = w_shift; /* Otherwise lastly appended win is active. */ } + return 0; } @@ -542,8 +591,8 @@ extern void draw_all_wins(struct WinMeta * wmeta) -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"; @@ -558,6 +607,10 @@ extern void draw_scroll_hint(struct Frame * frame, uint16_t pos, uint32_t dist, } char * scrolldsc = malloc((4 * sizeof(char)) + strlen(more) + strlen(unit) + 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. */ @@ -590,4 +643,5 @@ extern void draw_scroll_hint(struct Frame * frame, uint16_t pos, uint32_t dist, } free(scrolldsc); + return 0; }