X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fwindows.h;h=2a8f72d27a969ce262e077268f8984a4104fe0d6;hb=7290dec4219eaa2325aa00ef6139f715743dba3a;hp=9650ba2e0a1314b4f1eaab486d565d30313e4e5f;hpb=4ff506bdbf32df68e94b88974ee46731fe87a268;p=plomrogue diff --git a/src/windows.h b/src/windows.h index 9650ba2..2a8f72d 100644 --- a/src/windows.h +++ b/src/windows.h @@ -9,7 +9,8 @@ * * Windows can be almost any width (number has to fit into 16 bits); the virtual * screen grows with them as needed -- but only horizontally and only up to 2^16 - * cells. Their height is limited by the height of the terminal screen. + * cells. Their height is limited by the height of the terminal screen, which + * must also fit into 2^16 cells. * * Positioning of windows can only indirectly be influenced: by resizing them, * and by shifting their relative position inside the (currently invisible) @@ -21,8 +22,8 @@ * * Functions that return uint8_t return these error codes: * 0 - success - * 1 - memory allocation error (of ncurses' pads/windows, or scroll hint texts) - * 2 - activity forces virtual screen to grow beyond width of 2^16 cells + * 1 - memory allocation error + * 2 - would force virtual screen to grow beyond width or height of 2^16 cells * * TODO: Think up a more intuitive window positioning algorithm or at least make * the chain that windows are positioned by visible. @@ -31,40 +32,30 @@ #ifndef WINDOWS_H #define WINDOWS_H - - #include /* for uint8_t, uint16_t, uint32_t */ -#include /* for the WINDOW typedef */ -#include "yx_uint16.h" /* for yx_uint16 coordinates */ +#include /* for the WINDOW and chtype typedefs */ +#include "yx_uint16.h" /* for yx_uint16 struct */ -/* Individual windows consist of potential (real only if window is visible - * inside the virtual screen) ncurses WINDOWs wrapped inside Frame structs (that - * keep a window's designated size even when it is invisible) wrapped inside - * metadata-rich Win structs. Win structs are chained into a linked list of all - * the windows visible on the virtual screen and also contain pointers to what - * content is to be drawn inside the window, and by use of what method. +/* Individual windows are represented by "Win" structs. They describe frames + * located inside the virtual screen pad through which "winmaps" are visible, + * 2-dimensional maps of ncurses chtypes. Win structs are chained into a linked + * list of all the windows visible on the virtual screen and also contain + * pointers to what content is to be drawn inside the window, and by use of what + * method. */ - -struct Frame /* If Frame is Win's "frame", "size" is the */ -{ /* designated size of curses_win's ncurses WINDOW. */ - WINDOW * curses_win; /* If Frame is WinMeta's "padframe", curses_win is */ - struct yx_uint16 size; /* the ncurses pad representing the virtual screen */ -}; /* and "size" desribes the terminal screen size. */ - struct Win { - /* members supposed to be used ONLY INTERNALLY */ - struct Win * _prev; /* chain pointers; if 0, they mark the start or end */ - struct Win * _next; /* of the chain; if both are 0, Win is outside chain */ - struct yx_uint16 _start; /* upper left corner of "frame" WINDOW */ - char * _title; /* title to be used in window title bar */ - void (* _draw) (struct Win *); /* how to draw window content ("data") */ - - /* members to be available EXTERNALLY */ - struct Frame frame; - void * data; /* window content to be drawn by _draw() */ + struct Win * prev; /* chain pointers; if 0, they mark the start or end */ + struct Win * next; /* of the chain; if both are 0, Win is outside chain */ + struct yx_uint16 framesize; /* window frame size to see winmap through */ + struct yx_uint16 start; /* upper left corner of window in pad */ + struct yx_uint16 center; /* window content center to focus window on */ + char * title; /* title to be used in window title bar */ + void (* draw) (struct Win *); /* how to draw window content ("data") */ + chtype * winmap; /* sequence of cells, sorted into lines ... */ + struct yx_uint16 winmapsize; /* ... with these geometry infos */ }; @@ -74,15 +65,13 @@ struct Win */ struct WinMeta { - /* members supposed to be used ONLY INTERNALLY */ - WINDOW * _screen; /* ncurses' pointer to the terminal screen */ - struct Win * _chain_start; /* first Win in chain; its _prev == 0 */ - struct Win * _chain_end; /* last Win in chain; its _next == 0 */ - - /* members to be available EXTERNALLY */ - uint16_t pad_offset; /* number of cells view is moved to the right */ - struct Frame padframe; /* virtual screen fitted into terminal screen */ - struct Win * active; /* Win highlighted/selected for manipulation */ + WINDOW * screen; /* ncurses' pointer to the terminal screen */ + WINDOW * pad; /* ncurses pad of virtual screen */ + uint16_t pad_offset; /* number of cells view is moved to the right */ + struct yx_uint16 padsize; /* virtual screen size */ + struct Win * chain_start; /* first Win in chain; its _prev == 0 */ + struct Win * chain_end; /* last Win in chain; its _next == 0 */ + struct Win * active; /* Win highlighted/selected for manipulation */ }; @@ -90,27 +79,34 @@ struct WinMeta /* Initialize empty WinMeta "wmeta" on the terminal "screen". (Note that * emptiness is marked by WinMeta.chain_start=0.) Other struct members are also * initialized 0, except for the virtual screen (height = that of the terminal - * screen; width = 1) amd its frame sized to the size of the terminal screen. + * screen; width = 1) sized to the size of the terminal screen. */ -extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta * wmeta); +extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta ** wmeta); -/* Create a window as child of "wmeta" titled "title" of "height" and "width" - * and appointing "func"() to interpret and draw the content stored at "data" - * if the window is visible. +/* Initialize a window child of "wmeta" to "title", "height" and "width" and + * appointing "func"() to interpret and draw the window when it's visible. * - * A value for "width" <1 will trigger a fallback to width=1. A "height" < 1 or - * larger than the maximum window height possible within the virtual screen will - * trigger a fallback to the maximum height possible (i.e. pass a "height" of 0 - * to initialize the window to its largest possible height). + * Pass 0 for "width" to make the window as wide as the terminal screen. Pass + * negative values for "width" to make the width so many cells smaller than that + * of the terminal screen. Pass 0 for "height" to give the window the maximum + * allowed height: one cell smaller than that of the terminal screen. Pass + * negative values to make the window width so many cells smaller than that of + * the terminal screen. The maximum allowed height is also applied for positive + * values that exceed it or negative values that would reduce the window height + * < 1 cell. * - * Other members of the Win struct are initialized to 0. The window will stay - * invisible until appended to the chain of visible windows via append_win(). + * Other members of the Win struct are initialized to 0. */ -extern struct Win init_win(struct WinMeta * wmeta, char * title, - uint16_t height, uint16_t width, - void * data, void * func); +extern uint8_t init_win(struct WinMeta * wmeta, struct Win ** w, char * title, + int16_t height, int16_t width, void * func); + + + +/* Free allocated memory for an initialized Win / WinMeta structs. */ +extern void free_winmeta(struct WinMeta * wmeta); +extern void free_win(struct Win * win); @@ -143,7 +139,7 @@ extern uint8_t resize_active_win(struct WinMeta * wmeta, struct yx_uint16 size); -/* Cycle active window selection forwards ("dir" == "n") or backwards (any +/* Cycle active window selection forwards ("dir" == "f") or backwards (any * other "dir"). Wrap around in the windows chain if start / end of it is met. * Does nothing if no window is active. */ @@ -151,7 +147,7 @@ extern void cycle_active_win(struct WinMeta * wmeta, char dir); -/* Move active window forwards ("dir" == "f") or backwards ("dir" == "b"). +/* Move active window forwards ("dir" == "f") or backwards (any other "dir"). * Wrap around in the window chain if start / end of it is met. Does nothing if * no window is active. */ @@ -159,22 +155,11 @@ extern uint8_t shift_active_win(struct WinMeta * wmeta, char dir); -/* Draw virtual screen including all windows. Also add scroll hints (see comment - * on draw_scroll_hint()) for where the edges of the terminal screen hit - * non-edges of and inside the virtual screen. Then update the terminal screen. - */ -extern uint8_t draw_all_wins(struct WinMeta * wmeta); - - - -/* Draw scroll hint (a line stating that there is more to see on scrolling - * further into a certain direction) into "frame" at position "pos" (describing - * a column or a row dependent on "dir" being *either* "<"/">" *or* something - * else). It will consist of a line of "dir" symbols bracketing a descriptive - * text stating the number of rows/columns further available beyond the hint. +/* Draw virtual screen including all windows. Also add scroll hints for where + * the edges of the terminal screen hit non-edges of and inside the virtual + * screen. Then update the terminal screen. */ -extern uint8_t draw_scroll_hint(struct Frame * frame, uint16_t pos, - uint32_t dist, char dir); +extern uint8_t draw_all_wins(struct WinMeta * wm);