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systemd/0511-terminal-screen-save-state-in-separate-object.patch
Zbigniew Jędrzejewski-Szmek 62fe9450da Update to latest git
2014-10-07 15:51:56 -04:00

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From 3ae49a8fdb7d21c065fcf2b1f7459a32f963c087 Mon Sep 17 00:00:00 2001
From: David Herrmann <dh.herrmann@gmail.com>
Date: Sun, 5 Oct 2014 14:53:18 +0200
Subject: [PATCH] terminal/screen: save state in separate object
Terminal state can be saved/restored by applications. To simplify our
internal handling, put all affected state into a separate object.
Especially with alternate screen buffers, this will simplify our code
significantly.
---
src/libsystemd-terminal/term-internal.h | 41 ++--
src/libsystemd-terminal/term-screen.c | 326 +++++++++++++++-----------------
2 files changed, 175 insertions(+), 192 deletions(-)
diff --git a/src/libsystemd-terminal/term-internal.h b/src/libsystemd-terminal/term-internal.h
index a023498b53..c78b9aa70a 100644
--- a/src/libsystemd-terminal/term-internal.h
+++ b/src/libsystemd-terminal/term-internal.h
@@ -37,6 +37,7 @@ typedef struct term_page term_page;
typedef struct term_history term_history;
typedef uint32_t term_charset[96];
+typedef struct term_state term_state;
/*
* Miscellaneous
@@ -586,11 +587,9 @@ enum {
TERM_FLAG_HIDE_CURSOR = (1U << 1), /* hide cursor caret (default: off) */
TERM_FLAG_INHIBIT_TPARM = (1U << 2), /* do not send TPARM unrequested (default: off) */
TERM_FLAG_NEWLINE_MODE = (1U << 3), /* perform carriage-return on line-feeds (default: off) */
- TERM_FLAG_ORIGIN_MODE = (1U << 4), /* in origin mode, the cursor is bound by the margins (default: off) */
- TERM_FLAG_PENDING_WRAP = (1U << 5), /* wrap-around is pending */
- TERM_FLAG_AUTO_WRAP = (1U << 6), /* auto-wrap mode causes line-wraps at line-ends (default: off) */
- TERM_FLAG_KEYPAD_MODE = (1U << 7), /* application-keypad mode (default: off) */
- TERM_FLAG_CURSOR_KEYS = (1U << 8), /* enable application cursor-keys (default: off) */
+ TERM_FLAG_PENDING_WRAP = (1U << 4), /* wrap-around is pending */
+ TERM_FLAG_KEYPAD_MODE = (1U << 5), /* application-keypad mode (default: off) */
+ TERM_FLAG_CURSOR_KEYS = (1U << 6), /* enable application cursor-keys (default: off) */
};
enum {
@@ -600,6 +599,19 @@ enum {
TERM_CONFORMANCE_LEVEL_CNT,
};
+struct term_state {
+ unsigned int cursor_x;
+ unsigned int cursor_y;
+ term_attr attr;
+ term_charset **gl;
+ term_charset **gr;
+ term_charset **glt;
+ term_charset **grt;
+
+ bool auto_wrap : 1;
+ bool origin_mode : 1;
+};
+
struct term_screen {
unsigned long ref;
term_age_t age;
@@ -623,15 +635,8 @@ struct term_screen {
unsigned int flags;
unsigned int conformance_level;
- unsigned int cursor_x;
- unsigned int cursor_y;
- term_attr attr;
term_attr default_attr;
- term_charset **gl;
- term_charset **gr;
- term_charset **glt;
- term_charset **grt;
term_charset *g0;
term_charset *g1;
term_charset *g2;
@@ -639,14 +644,6 @@ struct term_screen {
char *answerback;
- struct {
- unsigned int cursor_x;
- unsigned int cursor_y;
- term_attr attr;
- term_charset **gl;
- term_charset **gr;
- term_charset **glt;
- term_charset **grt;
- unsigned int flags;
- } saved;
+ term_state state;
+ term_state saved;
};
diff --git a/src/libsystemd-terminal/term-screen.c b/src/libsystemd-terminal/term-screen.c
index 9026c25efe..c8a81658cb 100644
--- a/src/libsystemd-terminal/term-screen.c
+++ b/src/libsystemd-terminal/term-screen.c
@@ -70,18 +70,13 @@ int term_screen_new(term_screen **out, term_screen_write_fn write_fn, void *writ
screen->cmd_fn_data = cmd_fn_data;
screen->flags = TERM_FLAG_7BIT_MODE;
screen->conformance_level = TERM_CONFORMANCE_LEVEL_VT400;
- screen->gl = &screen->g0;
- screen->gr = &screen->g1;
screen->g0 = &term_unicode_lower;
screen->g1 = &term_unicode_upper;
screen->g2 = &term_unicode_lower;
screen->g3 = &term_unicode_upper;
-
- screen->saved.cursor_x = 0;
- screen->saved.cursor_y = 0;
- screen->saved.attr = screen->attr;
- screen->saved.gl = screen->gl;
- screen->saved.gr = screen->gr;
+ screen->state.gl = &screen->g0;
+ screen->state.gr = &screen->g1;
+ screen->saved = screen->state;
r = term_page_new(&screen->page_main);
if (r < 0)
@@ -224,7 +219,7 @@ static bool screen_tab_is_set(term_screen *screen, unsigned int pos) {
static inline void screen_age_cursor(term_screen *screen) {
term_cell *cell;
- cell = term_page_get_cell(screen->page, screen->cursor_x, screen->cursor_y);
+ cell = term_page_get_cell(screen->page, screen->state.cursor_x, screen->state.cursor_y);
if (cell)
cell->age = screen->age;
}
@@ -237,21 +232,21 @@ static void screen_cursor_set(term_screen *screen, unsigned int x, unsigned int
x = screen_clamp_x(screen, x);
y = screen_clamp_y(screen, y);
- if (x == screen->cursor_x && y == screen->cursor_y)
+ if (x == screen->state.cursor_x && y == screen->state.cursor_y)
return;
if (!(screen->flags & TERM_FLAG_HIDE_CURSOR))
screen_age_cursor(screen);
- screen->cursor_x = x;
- screen->cursor_y = y;
+ screen->state.cursor_x = x;
+ screen->state.cursor_y = y;
if (!(screen->flags & TERM_FLAG_HIDE_CURSOR))
screen_age_cursor(screen);
}
static void screen_cursor_set_rel(term_screen *screen, unsigned int x, unsigned int y) {
- if (screen->flags & TERM_FLAG_ORIGIN_MODE) {
+ if (screen->state.origin_mode) {
x = screen_clamp_x(screen, x);
y = screen_clamp_x(screen, y) + screen->page->scroll_idx;
@@ -266,53 +261,53 @@ static void screen_cursor_set_rel(term_screen *screen, unsigned int x, unsigned
}
static void screen_cursor_left(term_screen *screen, unsigned int num) {
- if (num > screen->cursor_x)
- num = screen->cursor_x;
+ if (num > screen->state.cursor_x)
+ num = screen->state.cursor_x;
- screen_cursor_set(screen, screen->cursor_x - num, screen->cursor_y);
+ screen_cursor_set(screen, screen->state.cursor_x - num, screen->state.cursor_y);
}
static void screen_cursor_left_tab(term_screen *screen, unsigned int num) {
unsigned int i;
- i = screen->cursor_x;
+ i = screen->state.cursor_x;
while (i > 0 && num > 0) {
if (screen_tab_is_set(screen, --i))
--num;
}
- screen_cursor_set(screen, i, screen->cursor_y);
+ screen_cursor_set(screen, i, screen->state.cursor_y);
}
static void screen_cursor_right(term_screen *screen, unsigned int num) {
if (num > screen->page->width)
num = screen->page->width;
- screen_cursor_set(screen, screen->cursor_x + num, screen->cursor_y);
+ screen_cursor_set(screen, screen->state.cursor_x + num, screen->state.cursor_y);
}
static void screen_cursor_right_tab(term_screen *screen, unsigned int num) {
unsigned int i;
- i = screen->cursor_x;
+ i = screen->state.cursor_x;
while (i + 1 < screen->page->width && num > 0) {
if (screen_tab_is_set(screen, ++i))
--num;
}
- screen_cursor_set(screen, i, screen->cursor_y);
+ screen_cursor_set(screen, i, screen->state.cursor_y);
}
static void screen_cursor_up(term_screen *screen, unsigned int num, bool scroll) {
unsigned int max;
- if (screen->cursor_y < screen->page->scroll_idx) {
- if (num > screen->cursor_y)
- num = screen->cursor_y;
+ if (screen->state.cursor_y < screen->page->scroll_idx) {
+ if (num > screen->state.cursor_y)
+ num = screen->state.cursor_y;
- screen_cursor_set(screen, screen->cursor_x, screen->cursor_y - num);
+ screen_cursor_set(screen, screen->state.cursor_x, screen->state.cursor_y - num);
} else {
- max = screen->cursor_y - screen->page->scroll_idx;
+ max = screen->state.cursor_y - screen->page->scroll_idx;
if (num > max) {
if (num < 1)
return;
@@ -321,14 +316,14 @@ static void screen_cursor_up(term_screen *screen, unsigned int num, bool scroll)
screen_age_cursor(screen);
if (scroll)
- term_page_scroll_down(screen->page, num - max, &screen->attr, screen->age, NULL);
+ term_page_scroll_down(screen->page, num - max, &screen->state.attr, screen->age, NULL);
- screen->cursor_y = screen->page->scroll_idx;
+ screen->state.cursor_y = screen->page->scroll_idx;
if (!(screen->flags & TERM_FLAG_HIDE_CURSOR))
screen_age_cursor(screen);
} else {
- screen_cursor_set(screen, screen->cursor_x, screen->cursor_y - num);
+ screen_cursor_set(screen, screen->state.cursor_x, screen->state.cursor_y - num);
}
}
}
@@ -336,13 +331,13 @@ static void screen_cursor_up(term_screen *screen, unsigned int num, bool scroll)
static void screen_cursor_down(term_screen *screen, unsigned int num, bool scroll) {
unsigned int max;
- if (screen->cursor_y >= screen->page->scroll_idx + screen->page->scroll_num) {
+ if (screen->state.cursor_y >= screen->page->scroll_idx + screen->page->scroll_num) {
if (num > screen->page->height)
num = screen->page->height;
- screen_cursor_set(screen, screen->cursor_x, screen->cursor_y - num);
+ screen_cursor_set(screen, screen->state.cursor_x, screen->state.cursor_y - num);
} else {
- max = screen->page->scroll_idx + screen->page->scroll_num - 1 - screen->cursor_y;
+ max = screen->page->scroll_idx + screen->page->scroll_num - 1 - screen->state.cursor_y;
if (num > max) {
if (num < 1)
return;
@@ -351,18 +346,27 @@ static void screen_cursor_down(term_screen *screen, unsigned int num, bool scrol
screen_age_cursor(screen);
if (scroll)
- term_page_scroll_up(screen->page, num - max, &screen->attr, screen->age, screen->history);
+ term_page_scroll_up(screen->page, num - max, &screen->state.attr, screen->age, screen->history);
- screen->cursor_y = screen->page->scroll_idx + screen->page->scroll_num - 1;
+ screen->state.cursor_y = screen->page->scroll_idx + screen->page->scroll_num - 1;
if (!(screen->flags & TERM_FLAG_HIDE_CURSOR))
screen_age_cursor(screen);
} else {
- screen_cursor_set(screen, screen->cursor_x, screen->cursor_y + num);
+ screen_cursor_set(screen, screen->state.cursor_x, screen->state.cursor_y + num);
}
}
}
+static void screen_save_state(term_screen *screen, term_state *where) {
+ *where = screen->state;
+}
+
+static void screen_restore_state(term_screen *screen, term_state *from) {
+ screen_cursor_set(screen, from->cursor_x, from->cursor_y);
+ screen->state = *from;
+}
+
static inline void set_reset(term_screen *screen, unsigned int flag, bool set) {
if (set)
screen->flags |= flag;
@@ -388,7 +392,7 @@ static void screen_mode_change(term_screen *screen, unsigned int mode, bool dec,
* DECOM: origin-mode
* TODO
*/
- set_reset(screen, TERM_FLAG_ORIGIN_MODE, set);
+ screen->state.origin_mode = set;
}
break;
@@ -398,7 +402,7 @@ static void screen_mode_change(term_screen *screen, unsigned int mode, bool dec,
* DECAWN: auto-wrap mode
* TODO
*/
- set_reset(screen, TERM_FLAG_AUTO_WRAP, set);
+ screen->state.auto_wrap = set;
}
break;
@@ -435,19 +439,19 @@ static uint32_t screen_map(term_screen *screen, uint32_t val) {
* identity. */
switch (val) {
case 33 ... 126:
- if (screen->glt) {
- nval = (**screen->glt)[val - 32];
- screen->glt = NULL;
+ if (screen->state.glt) {
+ nval = (**screen->state.glt)[val - 32];
+ screen->state.glt = NULL;
} else {
- nval = (**screen->gl)[val - 32];
+ nval = (**screen->state.gl)[val - 32];
}
break;
case 160 ... 255:
- if (screen->grt) {
- nval = (**screen->grt)[val - 160];
- screen->grt = NULL;
+ if (screen->state.grt) {
+ nval = (**screen->state.grt)[val - 160];
+ screen->state.grt = NULL;
} else {
- nval = (**screen->gr)[val - 160];
+ nval = (**screen->state.gr)[val - 160];
}
break;
}
@@ -471,20 +475,20 @@ static int screen_GRAPHIC(term_screen *screen, const term_seq *seq) {
term_char_t ch = TERM_CHAR_NULL;
uint32_t c;
- if (screen->cursor_x + 1 == screen->page->width
+ if (screen->state.cursor_x + 1 == screen->page->width
&& screen->flags & TERM_FLAG_PENDING_WRAP
- && screen->flags & TERM_FLAG_AUTO_WRAP) {
+ && screen->state.auto_wrap) {
screen_cursor_down(screen, 1, true);
- screen_cursor_set(screen, 0, screen->cursor_y);
+ screen_cursor_set(screen, 0, screen->state.cursor_y);
}
screen_cursor_clear_wrap(screen);
c = screen_map(screen, seq->terminator);
ch = term_char_merge(ch, screen_map(screen, c));
- term_page_write(screen->page, screen->cursor_x, screen->cursor_y, ch, 1, &screen->attr, screen->age, false);
+ term_page_write(screen->page, screen->state.cursor_x, screen->state.cursor_y, ch, 1, &screen->state.attr, screen->age, false);
- if (screen->cursor_x + 1 == screen->page->width)
+ if (screen->state.cursor_x + 1 == screen->page->width)
screen->flags |= TERM_FLAG_PENDING_WRAP;
else
screen_cursor_right(screen, 1);
@@ -556,7 +560,7 @@ static int screen_CHA(term_screen *screen, const term_seq *seq) {
pos = seq->args[0];
screen_cursor_clear_wrap(screen);
- screen_cursor_set(screen, pos - 1, screen->cursor_y);
+ screen_cursor_set(screen, pos - 1, screen->state.cursor_y);
return 0;
}
@@ -635,7 +639,7 @@ static int screen_CR(term_screen *screen, const term_seq *seq) {
*/
screen_cursor_clear_wrap(screen);
- screen_cursor_set(screen, 0, screen->cursor_y);
+ screen_cursor_set(screen, 0, screen->state.cursor_y);
return 0;
}
@@ -901,7 +905,7 @@ static int screen_DCH(term_screen *screen, const term_seq *seq) {
num = seq->args[0];
screen_cursor_clear_wrap(screen);
- term_page_delete_cells(screen->page, screen->cursor_x, screen->cursor_y, num, &screen->attr, screen->age);
+ term_page_delete_cells(screen->page, screen->state.cursor_x, screen->state.cursor_y, num, &screen->state.attr, screen->age);
return 0;
}
@@ -1254,14 +1258,7 @@ static int screen_DECRC(term_screen *screen, const term_seq *seq) {
* state for the main display and the status line.
*/
- screen->attr = screen->saved.attr;
- screen->gl = screen->saved.gl;
- screen->gr = screen->saved.gr;
- screen->glt = screen->saved.glt;
- screen->grt = screen->saved.grt;
- set_reset(screen, TERM_FLAG_AUTO_WRAP, screen->saved.flags & TERM_FLAG_AUTO_WRAP);
- set_reset(screen, TERM_FLAG_ORIGIN_MODE, screen->saved.flags & TERM_FLAG_ORIGIN_MODE);
- screen_cursor_set(screen, screen->saved.cursor_x, screen->saved.cursor_y);
+ screen_restore_state(screen, &screen->saved);
return 0;
}
@@ -1468,15 +1465,7 @@ static int screen_DECSC(term_screen *screen, const term_seq *seq) {
* * Any single shift 2 (SS2) or single shift 3 (SS3) functions sent
*/
- screen->saved.cursor_x = screen->cursor_x;
- screen->saved.cursor_y = screen->cursor_y;
- screen->saved.attr = screen->attr;
- screen->saved.gl = screen->gl;
- screen->saved.gr = screen->gr;
- screen->saved.glt = screen->glt;
- screen->saved.grt = screen->grt;
- screen->saved.flags = screen->flags & (TERM_FLAG_AUTO_WRAP
- | TERM_FLAG_ORIGIN_MODE);
+ screen_save_state(screen, &screen->saved);
return 0;
}
@@ -1503,10 +1492,10 @@ static int screen_DECSCA(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
case 2:
- screen->attr.protect = 0;
+ screen->state.attr.protect = 0;
break;
case 1:
- screen->attr.protect = 1;
+ screen->state.attr.protect = 1;
break;
}
@@ -1671,21 +1660,21 @@ static int screen_DECSED(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
term_page_erase(screen->page,
- screen->cursor_x, screen->cursor_y,
+ screen->state.cursor_x, screen->state.cursor_y,
screen->page->width, screen->page->height,
- &screen->attr, screen->age, true);
+ &screen->state.attr, screen->age, true);
break;
case 1:
term_page_erase(screen->page,
0, 0,
- screen->cursor_x, screen->cursor_y,
- &screen->attr, screen->age, true);
+ screen->state.cursor_x, screen->state.cursor_y,
+ &screen->state.attr, screen->age, true);
break;
case 2:
term_page_erase(screen->page,
0, 0,
screen->page->width, screen->page->height,
- &screen->attr, screen->age, true);
+ &screen->state.attr, screen->age, true);
break;
}
@@ -1717,21 +1706,21 @@ static int screen_DECSEL(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
term_page_erase(screen->page,
- screen->cursor_x, screen->cursor_y,
- screen->page->width, screen->cursor_y,
- &screen->attr, screen->age, true);
+ screen->state.cursor_x, screen->state.cursor_y,
+ screen->page->width, screen->state.cursor_y,
+ &screen->state.attr, screen->age, true);
break;
case 1:
term_page_erase(screen->page,
- 0, screen->cursor_y,
- screen->cursor_x, screen->cursor_y,
- &screen->attr, screen->age, true);
+ 0, screen->state.cursor_y,
+ screen->state.cursor_x, screen->state.cursor_y,
+ &screen->state.attr, screen->age, true);
break;
case 2:
term_page_erase(screen->page,
- 0, screen->cursor_y,
- screen->page->width, screen->cursor_y,
- &screen->attr, screen->age, true);
+ 0, screen->state.cursor_y,
+ screen->page->width, screen->state.cursor_y,
+ &screen->state.attr, screen->age, true);
break;
}
@@ -2078,7 +2067,7 @@ static int screen_DL(term_screen *screen, const term_seq *seq) {
if (seq->args[0] > 0)
num = seq->args[0];
- term_page_delete_lines(screen->page, screen->cursor_y, num, &screen->attr, screen->age);
+ term_page_delete_lines(screen->page, screen->state.cursor_y, num, &screen->state.attr, screen->age);
return 0;
}
@@ -2123,9 +2112,9 @@ static int screen_ECH(term_screen *screen, const term_seq *seq) {
num = seq->args[0];
term_page_erase(screen->page,
- screen->cursor_x, screen->cursor_y,
- screen->cursor_x + num, screen->cursor_y,
- &screen->attr, screen->age, false);
+ screen->state.cursor_x, screen->state.cursor_y,
+ screen->state.cursor_x + num, screen->state.cursor_y,
+ &screen->state.attr, screen->age, false);
return 0;
}
@@ -2154,21 +2143,21 @@ static int screen_ED(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
term_page_erase(screen->page,
- screen->cursor_x, screen->cursor_y,
+ screen->state.cursor_x, screen->state.cursor_y,
screen->page->width, screen->page->height,
- &screen->attr, screen->age, false);
+ &screen->state.attr, screen->age, false);
break;
case 1:
term_page_erase(screen->page,
0, 0,
- screen->cursor_x, screen->cursor_y,
- &screen->attr, screen->age, false);
+ screen->state.cursor_x, screen->state.cursor_y,
+ &screen->state.attr, screen->age, false);
break;
case 2:
term_page_erase(screen->page,
0, 0,
screen->page->width, screen->page->height,
- &screen->attr, screen->age, false);
+ &screen->state.attr, screen->age, false);
break;
}
@@ -2198,21 +2187,21 @@ static int screen_EL(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
term_page_erase(screen->page,
- screen->cursor_x, screen->cursor_y,
- screen->page->width, screen->cursor_y,
- &screen->attr, screen->age, false);
+ screen->state.cursor_x, screen->state.cursor_y,
+ screen->page->width, screen->state.cursor_y,
+ &screen->state.attr, screen->age, false);
break;
case 1:
term_page_erase(screen->page,
- 0, screen->cursor_y,
- screen->cursor_x, screen->cursor_y,
- &screen->attr, screen->age, false);
+ 0, screen->state.cursor_y,
+ screen->state.cursor_x, screen->state.cursor_y,
+ &screen->state.attr, screen->age, false);
break;
case 2:
term_page_erase(screen->page,
- 0, screen->cursor_y,
- screen->page->width, screen->cursor_y,
- &screen->attr, screen->age, false);
+ 0, screen->state.cursor_y,
+ screen->page->width, screen->state.cursor_y,
+ &screen->state.attr, screen->age, false);
break;
}
@@ -2271,7 +2260,7 @@ static int screen_HPA(term_screen *screen, const term_seq *seq) {
num = seq->args[0];
screen_cursor_clear_wrap(screen);
- screen_cursor_set(screen, num - 1, screen->cursor_y);
+ screen_cursor_set(screen, num - 1, screen->state.cursor_y);
return 0;
}
@@ -2327,7 +2316,7 @@ static int screen_HTS(term_screen *screen, const term_seq *seq) {
unsigned int pos;
- pos = screen->cursor_x;
+ pos = screen->state.cursor_x;
if (screen->page->width > 0)
screen->tabs[pos / 8] |= 1U << (pos % 8);
@@ -2372,7 +2361,7 @@ static int screen_ICH(term_screen *screen, const term_seq *seq) {
num = seq->args[0];
screen_cursor_clear_wrap(screen);
- term_page_insert_cells(screen->page, screen->cursor_x, screen->cursor_y, num, &screen->attr, screen->age);
+ term_page_insert_cells(screen->page, screen->state.cursor_x, screen->state.cursor_y, num, &screen->state.attr, screen->age);
return 0;
}
@@ -2398,7 +2387,7 @@ static int screen_IL(term_screen *screen, const term_seq *seq) {
num = seq->args[0];
screen_cursor_clear_wrap(screen);
- term_page_insert_lines(screen->page, screen->cursor_y, num, &screen->attr, screen->age);
+ term_page_insert_lines(screen->page, screen->state.cursor_y, num, &screen->state.attr, screen->age);
return 0;
}
@@ -2424,7 +2413,7 @@ static int screen_LF(term_screen *screen, const term_seq *seq) {
screen_cursor_down(screen, 1, true);
if (screen->flags & TERM_FLAG_NEWLINE_MODE)
- screen_cursor_left(screen, screen->cursor_x);
+ screen_cursor_left(screen, screen->state.cursor_x);
return 0;
}
@@ -2435,7 +2424,7 @@ static int screen_LS1R(term_screen *screen, const term_seq *seq) {
* Map G1 into GR.
*/
- screen->gr = &screen->g1;
+ screen->state.gr = &screen->g1;
return 0;
}
@@ -2446,7 +2435,7 @@ static int screen_LS2(term_screen *screen, const term_seq *seq) {
* Map G2 into GL.
*/
- screen->gl = &screen->g2;
+ screen->state.gl = &screen->g2;
return 0;
}
@@ -2457,7 +2446,7 @@ static int screen_LS2R(term_screen *screen, const term_seq *seq) {
* Map G2 into GR.
*/
- screen->gr = &screen->g2;
+ screen->state.gr = &screen->g2;
return 0;
}
@@ -2468,7 +2457,7 @@ static int screen_LS3(term_screen *screen, const term_seq *seq) {
* Map G3 into GL.
*/
- screen->gl = &screen->g3;
+ screen->state.gl = &screen->g3;
return 0;
}
@@ -2479,7 +2468,7 @@ static int screen_LS3R(term_screen *screen, const term_seq *seq) {
* Map G3 into GR.
*/
- screen->gr = &screen->g3;
+ screen->state.gr = &screen->g3;
return 0;
}
@@ -2513,7 +2502,7 @@ static int screen_NEL(term_screen *screen, const term_seq *seq) {
screen_cursor_clear_wrap(screen);
screen_cursor_down(screen, 1, true);
- screen_cursor_set(screen, 0, screen->cursor_y);
+ screen_cursor_set(screen, 0, screen->state.cursor_y);
return 0;
}
@@ -2834,7 +2823,7 @@ static int screen_SD(term_screen *screen, const term_seq *seq) {
if (seq->args[0] > 0)
num = seq->args[0];
- term_page_scroll_down(screen->page, num, &screen->attr, screen->age, NULL);
+ term_page_scroll_down(screen->page, num, &screen->state.attr, screen->age, NULL);
return 0;
}
@@ -2849,7 +2838,7 @@ static int screen_SGR(term_screen *screen, const term_seq *seq) {
int v;
if (seq->n_args < 1) {
- zero(screen->attr);
+ zero(screen->state.attr);
return 0;
}
@@ -2857,67 +2846,67 @@ static int screen_SGR(term_screen *screen, const term_seq *seq) {
v = seq->args[i];
switch (v) {
case 1:
- screen->attr.bold = 1;
+ screen->state.attr.bold = 1;
break;
case 3:
- screen->attr.italic = 1;
+ screen->state.attr.italic = 1;
break;
case 4:
- screen->attr.underline = 1;
+ screen->state.attr.underline = 1;
break;
case 5:
- screen->attr.blink = 1;
+ screen->state.attr.blink = 1;
break;
case 7:
- screen->attr.inverse = 1;
+ screen->state.attr.inverse = 1;
break;
case 8:
- screen->attr.hidden = 1;
+ screen->state.attr.hidden = 1;
break;
case 22:
- screen->attr.bold = 0;
+ screen->state.attr.bold = 0;
break;
case 23:
- screen->attr.italic = 0;
+ screen->state.attr.italic = 0;
break;
case 24:
- screen->attr.underline = 0;
+ screen->state.attr.underline = 0;
break;
case 25:
- screen->attr.blink = 0;
+ screen->state.attr.blink = 0;
break;
case 27:
- screen->attr.inverse = 0;
+ screen->state.attr.inverse = 0;
break;
case 28:
- screen->attr.hidden = 0;
+ screen->state.attr.hidden = 0;
break;
case 30 ... 37:
- screen->attr.fg.ccode = v - 30 + TERM_CCODE_BLACK;
+ screen->state.attr.fg.ccode = v - 30 + TERM_CCODE_BLACK;
break;
case 39:
- screen->attr.fg.ccode = 0;
+ screen->state.attr.fg.ccode = 0;
break;
case 40 ... 47:
- screen->attr.bg.ccode = v - 40 + TERM_CCODE_BLACK;
+ screen->state.attr.bg.ccode = v - 40 + TERM_CCODE_BLACK;
break;
case 49:
- screen->attr.bg.ccode = 0;
+ screen->state.attr.bg.ccode = 0;
break;
case 90 ... 97:
- screen->attr.fg.ccode = v - 90 + TERM_CCODE_LIGHT_BLACK;
+ screen->state.attr.fg.ccode = v - 90 + TERM_CCODE_LIGHT_BLACK;
break;
case 100 ... 107:
- screen->attr.bg.ccode = v - 100 + TERM_CCODE_LIGHT_BLACK;
+ screen->state.attr.bg.ccode = v - 100 + TERM_CCODE_LIGHT_BLACK;
break;
case 38:
/* fallthrough */
case 48:
if (v == 38)
- dst = &screen->attr.fg;
+ dst = &screen->state.attr.fg;
else
- dst = &screen->attr.bg;
+ dst = &screen->state.attr.bg;
++i;
if (i >= seq->n_args)
@@ -2955,7 +2944,7 @@ static int screen_SGR(term_screen *screen, const term_seq *seq) {
case -1:
/* fallthrough */
case 0:
- zero(screen->attr);
+ zero(screen->state.attr);
break;
}
}
@@ -2969,7 +2958,7 @@ static int screen_SI(term_screen *screen, const term_seq *seq) {
* Map G0 into GL.
*/
- screen->gl = &screen->g0;
+ screen->state.gl = &screen->g0;
return 0;
}
@@ -3009,7 +2998,7 @@ static int screen_SO(term_screen *screen, const term_seq *seq) {
* Map G1 into GL.
*/
- screen->gl = &screen->g1;
+ screen->state.gl = &screen->g1;
return 0;
}
@@ -3030,7 +3019,7 @@ static int screen_SS2(term_screen *screen, const term_seq *seq) {
* Temporarily map G2 into GL for the next graphics character.
*/
- screen->glt = &screen->g2;
+ screen->state.glt = &screen->g2;
return 0;
}
@@ -3041,7 +3030,7 @@ static int screen_SS3(term_screen *screen, const term_seq *seq) {
* Temporarily map G3 into GL for the next graphics character
*/
- screen->glt = &screen->g3;
+ screen->state.glt = &screen->g3;
return 0;
}
@@ -3077,7 +3066,7 @@ static int screen_SU(term_screen *screen, const term_seq *seq) {
if (seq->args[0] > 0)
num = seq->args[0];
- term_page_scroll_up(screen->page, num, &screen->attr, screen->age, screen->history);
+ term_page_scroll_up(screen->page, num, &screen->state.attr, screen->age, screen->history);
return 0;
}
@@ -3116,7 +3105,7 @@ static int screen_TBC(term_screen *screen, const term_seq *seq) {
switch (mode) {
case 0:
- pos = screen->cursor_x;
+ pos = screen->state.cursor_x;
if (screen->page->width > 0)
screen->tabs[pos / 8] &= ~(1U << (pos % 8));
break;
@@ -3147,7 +3136,7 @@ static int screen_VPA(term_screen *screen, const term_seq *seq) {
pos = seq->args[0];
screen_cursor_clear_wrap(screen);
- screen_cursor_set_rel(screen, screen->cursor_x, pos - 1);
+ screen_cursor_set_rel(screen, screen->state.cursor_x, pos - 1);
return 0;
}
@@ -4104,11 +4093,11 @@ int term_screen_resize(term_screen *screen, unsigned int x, unsigned int y) {
assert_return(screen, -EINVAL);
- r = term_page_reserve(screen->page_main, x, y, &screen->attr, screen->age);
+ r = term_page_reserve(screen->page_main, x, y, &screen->state.attr, screen->age);
if (r < 0)
return r;
- r = term_page_reserve(screen->page_alt, x, y, &screen->attr, screen->age);
+ r = term_page_reserve(screen->page_alt, x, y, &screen->state.attr, screen->age);
if (r < 0)
return r;
@@ -4124,11 +4113,11 @@ int term_screen_resize(term_screen *screen, unsigned int x, unsigned int y) {
for (i = (screen->page->width + 7) / 8 * 8; i < x; i += 8)
screen->tabs[i / 8] = 0x1;
- term_page_resize(screen->page_main, x, y, &screen->attr, screen->age, screen->history);
- term_page_resize(screen->page_alt, x, y, &screen->attr, screen->age, NULL);
+ term_page_resize(screen->page_main, x, y, &screen->state.attr, screen->age, screen->history);
+ term_page_resize(screen->page_alt, x, y, &screen->state.attr, screen->age, NULL);
- screen->cursor_x = screen_clamp_x(screen, screen->cursor_x);
- screen->cursor_y = screen_clamp_x(screen, screen->cursor_y);
+ screen->state.cursor_x = screen_clamp_x(screen, screen->state.cursor_x);
+ screen->state.cursor_y = screen_clamp_x(screen, screen->state.cursor_y);
screen_cursor_clear_wrap(screen);
return 0;
@@ -4139,29 +4128,26 @@ void term_screen_soft_reset(term_screen *screen) {
assert(screen);
- screen->gl = &screen->g0;
- screen->gr = &screen->g1;
- screen->glt = NULL;
- screen->grt = NULL;
screen->g0 = &term_unicode_lower;
screen->g1 = &term_unicode_upper;
screen->g2 = &term_unicode_lower;
screen->g3 = &term_unicode_upper;
+ screen->state.attr = screen->default_attr;
+ screen->state.gl = &screen->g0;
+ screen->state.gr = &screen->g1;
+ screen->state.glt = NULL;
+ screen->state.grt = NULL;
+ screen->state.auto_wrap = 0;
+ screen->state.origin_mode = 0;
+
+ screen->saved = screen->state;
+ screen->saved.cursor_x = 0;
+ screen->saved.cursor_y = 0;
screen->page = screen->page_main;
screen->history = screen->history_main;
screen->flags = TERM_FLAG_7BIT_MODE;
screen->conformance_level = TERM_CONFORMANCE_LEVEL_VT400;
- screen->attr = screen->default_attr;
-
- screen->saved.cursor_x = 0;
- screen->saved.cursor_y = 0;
- screen->saved.attr = screen->attr;
- screen->saved.gl = screen->gl;
- screen->saved.gr = screen->gr;
- screen->saved.glt = NULL;
- screen->saved.grt = NULL;
- screen->flags = 0;
for (i = 0; i < screen->page->width; i += 8)
screen->tabs[i / 8] = 0x1;
@@ -4175,10 +4161,10 @@ void term_screen_hard_reset(term_screen *screen) {
term_screen_soft_reset(screen);
zero(screen->utf8);
- screen->cursor_x = 0;
- screen->cursor_y = 0;
- term_page_erase(screen->page_main, 0, 0, screen->page->width, screen->page->height, &screen->attr, screen->age, false);
- term_page_erase(screen->page_alt, 0, 0, screen->page->width, screen->page->height, &screen->attr, screen->age, false);
+ screen->state.cursor_x = 0;
+ screen->state.cursor_y = 0;
+ term_page_erase(screen->page_main, 0, 0, screen->page->width, screen->page->height, &screen->state.attr, screen->age, false);
+ term_page_erase(screen->page_alt, 0, 0, screen->page->width, screen->page->height, &screen->state.attr, screen->age, false);
}
int term_screen_set_answerback(term_screen *screen, const char *answerback) {
@@ -4248,7 +4234,7 @@ int term_screen_draw(term_screen *screen,
cw = MAX(cell->cwidth, 1U);
attr = cell->attr;
- if (i == screen->cursor_x && j == screen->cursor_y &&
+ if (i == screen->state.cursor_x && j == screen->state.cursor_y &&
!(screen->flags & TERM_FLAG_HIDE_CURSOR))
attr.inverse ^= 1;
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