#include "windows.h"
#include <stdint.h> /* for uint8_t, uint16_t, uint32_t, UINT16_MAX */
#include <ncurses.h> /* for typedefs WINDOW, chtype, wresize(), getmaxx(), */
- /* getmaxy(), supbad(), delwin(), mvwaddch(), */
- /* mvwaddstr(), newpad(), wnoutrefres(), erase(), */
- /* werase(), pnoutrefresh(), doupdate() */
+ /* getmaxy(), delwin(), mvwaddch(), mvwaddstr(), */
+ /* newpad(), wnoutrefres(), erase(), werase(), */
+ /* pnoutrefresh(), doupdate(), getmaxyx() */
#include <stdlib.h> /* for malloc(), free() */
#include <string.h> /* for strlen(), strnlen(), memcpy() */
-#include "yx_uint16.h" /* for yx_uint16 coordinates */
+#include "yx_uint16.h" /* for struct yx_uint16 */
+#include "misc.h" /* for center_offset() */
-/* Destroy window "w"'s ncurses WINDOW (and set w.Frame.curses_win to 0). */
-static void destroy_win(struct Win * w);
+/* Draw scroll hint (a line stating that there are "dist" more elements of
+ * "unit" further into the direction symbolized by the "dir" char) into virtual
+ * screen pad, onto an appropriate edge of "frame": the left or right edge if
+ * "dir" is "<" or ">", or the upper or lower edge if it is "^" or "v". "start"
+ * should be either the start coordinate of "frame" if it describes a window or
+ * .y=, .x=wm->pad_offset if it describes the virtual screen. winscroll_hint()
+ * and padscroll_hint() are wrappers to simplify the use of scroll_hint().
+ */
+static void scroll_hint(struct WinMeta * wm, struct Frame * frame, char dir,
+ uint16_t dist, char * unit, struct yx_uint16 start);
+static void winscroll_hint(struct WinMeta * wm, struct Win * w, char dir,
+ uint16_t dist);
+static void padscroll_hint(struct WinMeta * wm, char dir, uint16_t dist);
/* Draw contents of all windows in window chain from window "w" onwards. */
-static void draw_wins(struct Win * w);
+static uint8_t draw_wins(struct WinMeta * wm, struct Win * w);
static uint8_t update_wins(struct WinMeta * wmeta, struct Win * w)
{
- if (0 != w->frame.curses_win)
- {
- destroy_win(w);
- }
place_win(wmeta, w);
uint8_t test_refit = refit_pad(wmeta);
if (0 != test_refit)
{
return test_refit;
}
- WINDOW * subpad_test = subpad(wmeta->padframe.curses_win,
- w->frame.size.y, w->frame.size.x,
- w->start.y, w->start.x);
- if (NULL == subpad_test)
- {
- return 1;
- }
- w->frame.curses_win = subpad_test;
if (0 != w->next)
{
return update_wins(wmeta, w->next);
/* 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);
+ uint16_t w_prev_maxy = w->prev->start.y + w->prev->frame.size.y;
if ( w->frame.size.x <= w->prev->frame.size.x
&& w->frame.size.y < wmeta->padframe.size.y - w_prev_maxy)
{
}
w_upup = w_upup->prev;
}
- w_prev_maxy = w_upup->start.y
- + getmaxy(w_upup->frame.curses_win);
+ w_prev_maxy = w_upup->start.y + w_upup->frame.size.y;
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->padframe.size.y - w_prev_maxy
-static void destroy_win(struct Win * w)
+static void scroll_hint(struct WinMeta * wm, struct Frame * frame, 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 = frame->size.x;
+ if ('<' == dir || '>' == dir)
+ {
+ dsc_space = frame->size.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 = frame->size.x - 1;
+ }
+ else if ('v' == dir)
+ {
+ draw_offset = frame->size.y - 1;
+ }
+ uint16_t q = 0;
+ for (; q < dsc_space; q++)
+ {
+ chtype symbol = dir | A_REVERSE;
+ if (q >= dsc_offset && q < strlen(scrolldsc) + dsc_offset)
+ {
+ symbol = scrolldsc[q - dsc_offset] | A_REVERSE;
+ }
+ if ('<' == dir || '>' == dir)
+ {
+ mvwaddch(wm->padframe.curses_win,
+ start.y + q, start.x + draw_offset, symbol);
+ }
+ else
+ {
+ mvwaddch(wm->padframe.curses_win,
+ start.y + draw_offset, start.x + q, symbol);
+ }
+ }
+}
+
+
+static void padscroll_hint(struct WinMeta * wm, char dir, uint16_t dist)
+{
+ struct yx_uint16 start;
+ start.y = 0;
+ start.x = wm->pad_offset;
+ scroll_hint(wm, &wm->padframe, dir, dist, "columns", start);
+}
+
+
+
+static void winscroll_hint(struct WinMeta * wm, struct Win * w, char dir,
+ uint16_t dist)
{
- delwin(w->frame.curses_win);
- w->frame.curses_win = 0;
+ char * unit = "lines";
+ if ('<' == dir || '>' == dir)
+ {
+ unit = "columns";
+ }
+ struct yx_uint16 start = w->start;
+ scroll_hint(wm, &w->frame, dir, dist, unit, start);
}
-static void draw_wins(struct Win * w)
+static uint8_t draw_wins(struct WinMeta * wm, struct Win * w)
{
+ if (ERR == wresize(w->frame.curses_win, 1, 1))
+ {
+ return 1;
+ }
w->draw(w);
+ uint16_t y, x, size_y, size_x;
+ getmaxyx(w->frame.curses_win, size_y, size_x);
+ uint16_t offset_y = center_offset(w->center.y, size_y, w->frame.size.y);
+ uint16_t offset_x = center_offset(w->center.x, size_x, w->frame.size.x);
+ for (y = offset_y; y < w->frame.size.y + offset_y && y < size_y; y++)
+ {
+ for (x = offset_x; x < w->frame.size.x + offset_x && x < size_x; x++)
+ {
+ chtype ch = mvwinch(w->frame.curses_win, y, x);
+ mvwaddch(wm->padframe.curses_win, w->start.y + (y - offset_y),
+ w->start.x + (x - offset_x), ch);
+ }
+ }
+ if (offset_y > 0)
+ {
+ winscroll_hint(wm, w, '^', offset_y + 1);
+ }
+ if (size_y > offset_y + w->frame.size.y)
+ {
+ winscroll_hint(wm, w, 'v', size_y - ((offset_y + w->frame.size.y) - 1));
+ }
+ if (offset_x > 0)
+ {
+ winscroll_hint(wm, w, '<', offset_x + 1);
+ }
+ if (size_x > offset_x + w->frame.size.x)
+ {
+ winscroll_hint(wm, w, '>', size_x - ((offset_x + w->frame.size.x) - 1));
+ }
if (0 != w->next)
{
- draw_wins(w->next);
+ return draw_wins(wm, w->next);
}
+ return 0;
}
}
w->prev = 0;
w->next = 0;
- w->frame.curses_win = 0;
+ w->frame.curses_win = newpad(1, 1);
+ if (NULL == w->frame.curses_win)
+ {
+ return 1;
+ }
w->title = malloc(strlen(title) + 1);
if (NULL == w->title)
{
return 1;
}
sprintf(w->title, "%s", title);
- w->data = data;
+ w->data = data;
w->draw = func;
+ w->center.y = 0;
+ w->center.x = 0;
if (0 < width)
{
w->frame.size.x = width;
extern void free_win(struct Win * win)
{
- if (0 != win->frame.curses_win)
- {
- delwin(win->frame.curses_win);
- }
+ delwin(win->frame.curses_win);
free(win->title);
free(win);
}
extern uint8_t suspend_win(struct WinMeta * wmeta, struct Win * w)
{
- destroy_win(w);
-
if (wmeta->chain_start != w)
{
w->prev->next = w->next;
-extern uint8_t draw_all_wins(struct WinMeta * wmeta)
+extern uint8_t draw_all_wins(struct WinMeta * wm)
{
/* Empty everything before filling it a-new. */
erase();
- wnoutrefresh(wmeta->screen);
- werase(wmeta->padframe.curses_win);
- if (wmeta->chain_start)
+ wnoutrefresh(wm->screen);
+ werase(wm->padframe.curses_win);
+ if (wm->chain_start)
{
- /* Draw windows' contents first, then their borders. */
- draw_wins(wmeta->chain_start);
- draw_wins_borderlines(wmeta->chain_start, wmeta->active,
- wmeta->padframe.curses_win);
- draw_wins_bordercorners(wmeta->chain_start,wmeta->padframe.curses_win);
+ /* Draw windows' borders first, then windows. */
+ draw_wins_borderlines(wm->chain_start, wm->active,
+ wm->padframe.curses_win);
+ draw_wins_bordercorners(wm->chain_start, wm->padframe.curses_win);
+
+ if (1 == draw_wins(wm, wm->chain_start))
+ {
+ return 1;
+ }
/* Draw virtual screen scroll hints. */
- if (wmeta->pad_offset > 0)
+ if (wm->pad_offset > 0)
{
- if (draw_scroll_hint(&wmeta->padframe,
- wmeta->pad_offset, wmeta->pad_offset + 1, '<'))
- {
- return 1;
- }
+ padscroll_hint(wm, '<', wm->pad_offset + 1);
}
- if (wmeta->pad_offset + wmeta->padframe.size.x
- < getmaxx(wmeta->padframe.curses_win) - 1)
+ uint16_t size_x = getmaxx(wm->padframe.curses_win);
+ uint16_t right_edge = wm->pad_offset + wm->padframe.size.x;
+ if (right_edge < size_x - 1)
{
- if (draw_scroll_hint(&wmeta->padframe,
- wmeta->pad_offset + wmeta->padframe.size.x - 1,
- getmaxx(wmeta->padframe.curses_win)
- - (wmeta->pad_offset + wmeta->padframe.size.x),
- '>'))
- {
- return 1;
- }
+ padscroll_hint(wm, '>', size_x - right_edge);
}
- /* Write virtual screen segment to be shown on physical screen into */
- /* ncurses screen buffer. */
- pnoutrefresh(wmeta->padframe.curses_win, 0, wmeta->pad_offset, 0, 0,
- wmeta->padframe.size.y, wmeta->padframe.size.x-1);
+ /* Write pad segment to be shown on physical screen to screen buffer. */
+ pnoutrefresh(wm->padframe.curses_win, 0, wm->pad_offset, 0, 0,
+ wm->padframe.size.y, wm->padframe.size.x - 1);
}
/* Only at the end write accumulated changes to the physical screen. */
doupdate();
return 0;
}
-
-
-
-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";
- 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 */
- 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. */
- 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);
- return 0;
-}
projects / plomrogue / blobdiff