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@ -50,7 +50,7 @@ enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, |
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CURSOR_SAVE, CURSOR_LOAD }; |
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enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 }; |
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enum { GLYPH_SET=1, GLYPH_DIRTY=2 }; |
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enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 }; |
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enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 }; |
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enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 }; |
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enum { SCREEN_UPDATE, SCREEN_REDRAW }; |
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@ -86,7 +86,8 @@ typedef struct { |
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typedef struct { |
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int row; /* nb row */ |
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int col; /* nb col */ |
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Line* line; /* screen */ |
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Line* line; /* screen */ |
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Line* alt; /* alternate screen */ |
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TCursor c; /* cursor */ |
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int top; /* top scroll limit */ |
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int bot; /* bottom scroll limit */ |
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@ -156,6 +157,7 @@ static void tscrolldown(int); |
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static void tsetattr(int*, int); |
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static void tsetchar(char); |
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static void tsetscroll(int, int); |
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static void tswapscreen(void); |
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static void ttynew(void); |
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static void ttyread(void); |
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@ -337,12 +339,23 @@ tnew(int col, int row) { |
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/* set screen size */ |
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term.row = row, term.col = col; |
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term.line = malloc(term.row * sizeof(Line)); |
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for(row = 0 ; row < term.row; row++) |
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term.alt = malloc(term.row * sizeof(Line)); |
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for(row = 0 ; row < term.row; row++) { |
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term.line[row] = malloc(term.col * sizeof(Glyph)); |
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term.alt [row] = malloc(term.col * sizeof(Glyph)); |
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} |
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/* setup screen */ |
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treset(); |
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} |
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void |
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tswapscreen(void) { |
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Line* tmp = term.line; |
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term.line = term.alt; |
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term.alt = tmp; |
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term.mode ^= MODE_ALTSCREEN; |
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} |
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void |
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tscrolldown (int n) { |
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int i; |
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@ -712,10 +725,21 @@ csihandle(void) { |
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case 25: |
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term.c.state |= CURSOR_HIDE; |
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break; |
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case 1048: /* XXX: no alt. screen to erase/save */ |
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case 1047: |
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if(IS_SET(MODE_ALTSCREEN)) { |
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tclearregion(0, 0, term.col-1, term.row-1); |
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tswapscreen(); |
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} |
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break; |
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case 1048: |
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tcursor(CURSOR_LOAD); |
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break; |
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case 1049: |
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tcursor(CURSOR_LOAD); |
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tclearregion(0, 0, term.col-1, term.row-1); |
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if(IS_SET(MODE_ALTSCREEN)) { |
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tclearregion(0, 0, term.col-1, term.row-1); |
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tswapscreen(); |
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} |
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break; |
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default: |
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goto unknown; |
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@ -761,10 +785,21 @@ csihandle(void) { |
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case 25: |
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term.c.state &= ~CURSOR_HIDE; |
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break; |
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case 1048: |
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case 1049: /* XXX: no alt. screen to erase/save */ |
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case 1047: |
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if(IS_SET(MODE_ALTSCREEN)) |
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tclearregion(0, 0, term.col-1, term.row-1); |
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else |
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tswapscreen(); |
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break; |
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case 1048: |
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tcursor(CURSOR_SAVE); |
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break; |
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case 1049: |
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tcursor(CURSOR_SAVE); |
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tclearregion(0, 0, term.col-1, term.row-1); |
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if(IS_SET(MODE_ALTSCREEN)) |
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tclearregion(0, 0, term.col-1, term.row-1); |
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else |
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tswapscreen(); |
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break; |
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default: goto unknown; |
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} |
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@ -889,19 +924,19 @@ tputc(char c) { |
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treset(); |
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term.esc = 0; |
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break; |
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case '=': /* DECPAM */ |
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case '=': /* DECPAM -- Application keypad */ |
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term.mode |= MODE_APPKEYPAD; |
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term.esc = 0; |
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break; |
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case '>': /* DECPNM */ |
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case '>': /* DECPNM -- Normal keypad */ |
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term.mode &= ~MODE_APPKEYPAD; |
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term.esc = 0; |
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break; |
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case '7': |
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case '7': /* DECSC -- Save Cursor*/ |
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tcursor(CURSOR_SAVE); |
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term.esc = 0; |
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break; |
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case '8': |
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case '8': /* DECRC -- Restore Cursor */ |
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tcursor(CURSOR_LOAD); |
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term.esc = 0; |
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break; |
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@ -961,21 +996,28 @@ tresize(int col, int row) { |
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return; |
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/* free uneeded rows */ |
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for(i = row; i < term.row; i++) |
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for(i = row; i < term.row; i++) { |
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free(term.line[i]); |
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free(term.alt[i]); |
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} |
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/* resize to new height */ |
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term.line = realloc(term.line, row * sizeof(Line)); |
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term.line = realloc(term.alt, row * sizeof(Line)); |
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/* resize each row to new width, zero-pad if needed */ |
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for(i = 0; i < minrow; i++) { |
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term.line[i] = realloc(term.line[i], col * sizeof(Glyph)); |
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term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph)); |
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memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph)); |
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memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph)); |
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} |
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/* allocate any new rows */ |
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for(/* i == minrow */; i < row; i++) |
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for(/* i == minrow */; i < row; i++) { |
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term.line[i] = calloc(col, sizeof(Glyph)); |
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term.alt [i] = calloc(col, sizeof(Glyph)); |
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} |
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/* update terminal size */ |
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term.col = col, term.row = row; |
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