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 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") */
struct Frame frame;
- void * data; /* window content to be drawn by _draw() */
+ void * data; /* window content to be drawn by _draw() */
};
*/
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 */
+ struct Win * chain_start; /* first Win in chain; its _prev == 0 */
+ struct Win * chain_end; /* last Win in chain; its _next == 0 */
+ 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 */
};
* 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.
*/
-extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta * wmeta);
+extern uint8_t init_win_meta(WINDOW * screen, struct WinMeta ** wmeta);
* the window is visible.
*
* Pass 0 for "width" to make the window as wide as the terminal screen. Pass
- * negative values for "width" to make the size so many cells smaller than the
- * terminal screen. Pass 0 for "height" to give the window the maximum allowed
- * height: one cell smaller than the terminal screen. Pass negative values to
- * make the window so many smalls smaller than 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.
+ * 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.
*/
-extern uint8_t init_win(struct WinMeta * wmeta, struct Win * w, char * title,
+extern uint8_t init_win(struct WinMeta * wmeta, struct Win ** w, char * title,
int16_t height, int16_t width,
void * data, void * func);
+/* Free allocated memory for an initialized Win / WinMeta struct. */
+extern void free_winmeta(struct WinMeta * wmeta);
+extern void free_win(struct Win * win);
+
+
+
/* Append/suspend window "w" to/from chain of visible windows below "wmeta".
* Appended windows will become active. Suspended active windows will move the
* active window selection to their successor in the window chain or, failing
* 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.
+ * text stating "dist" as the number of rows/columns further available beyond
+ * the hint.
*/
extern uint8_t draw_scroll_hint(struct Frame * frame, uint16_t pos,
uint32_t dist, char dir);