version 0.2.2

Fixes #61

kitty/boss.py

@@ -14,6 +14,7 @@ from time import monotonic
 from queue import Queue, Empty
 from gettext import gettext as _
 
+from .config import MINIMUM_FONT_SIZE
 from .constants import (
     viewport_size, set_boss, wakeup, cell_size, MODIFIER_KEYS,
     main_thread, mouse_button_pressed, mouse_cursor_pos
@@ -86,6 +87,7 @@ class Boss(Thread):
         self.pending_ui_thread_calls = Queue()
         self.write_dispatch_map = {}
         set_boss(self)
+        self.current_font_size = opts.font_size
         cell_size.width, cell_size.height = set_font_family(opts)
         self.opts, self.args = opts, args
         self.glfw_window = glfw_window
@@ -228,6 +230,28 @@ class Boss(Thread):
         self.pending_resize = False
         glfw_post_empty_event()
 
+    def increase_font_size(self):
+        self.change_font_size(min(self.opts.font_size * 5, self.current_font_size + self.opts.font_size_delta))
+
+    def decrease_font_size(self):
+        self.change_font_size(max(MINIMUM_FONT_SIZE, self.current_font_size - self.opts.font_size_delta))
+
+    def restore_font_size(self):
+        self.change_font_size(self.opts.font_size)
+
+    def change_font_size(self, new_size):
+        if new_size == self.current_font_size:
+            return
+        self.current_font_size = new_size
+        cell_size.width, cell_size.height = set_font_family(
+            self.opts, override_font_size=self.current_font_size)
+        self.sprites.do_layout(cell_size.width, cell_size.height)
+        self.queue_action(self.resize_windows_after_font_size_change)
+
+    def resize_windows_after_font_size_change(self):
+        self.tab_manager.resize()
+        glfw_post_empty_event()
+
     def tabbar_visibility_changed(self):
         self.tab_manager.resize(only_tabs=True)
         glfw_post_empty_event()

kitty/char_grid.py

@@ -196,12 +196,15 @@ class Selection:  # {{{
             if y == b[0]:
                 endx = max(0, min(b[1], endx))
             l = line(y)
+            is_continued = l.is_continued()
             if endx - startx >= linebuf.xnum - 1:
                 l = str(l).rstrip(' ')
             else:
                 l = ''.join(l[x] for x in range(startx, endx + 1))
+            if not is_continued and startx == 0 and len(lines) > 0:
+                l = '\n' + l
             lines.append(l)
-        return '\n'.join(lines)
+        return ''.join(lines)
 # }}}
 
 

kitty/client.py

@@ -19,10 +19,30 @@ def write(x):
     sys.stdout.flush()
 
 
+def set_title(*args):
+    pass
+
+
+def set_icon(*args):
+    pass
+
+
+def screen_bell():
+    pass
+
+
 def screen_cursor_position(y, x):
     write(CSI + '%s;%sH' % (y, x))
 
 
+def screen_cursor_forward(amt):
+    write(CSI + '%sC' % amt)
+
+
+def screen_cursor_back1(amt):
+    write(CSI + '%sD' % amt)
+
+
 def screen_designate_charset(which, to):
     which = '()'[int(which)]
     to = chr(int(to))
@@ -57,6 +77,10 @@ def screen_erase_in_display(how, private):
     write(CSI + ('?' if private else '') + str(how) + 'J')
 
 
+def screen_erase_in_line(how, private):
+    write(CSI + ('?' if private else '') + str(how) + 'K')
+
+
 def screen_cursor_up2(count):
     write(CSI + '%dA' % count)
 
@@ -65,6 +89,10 @@ def screen_carriage_return():
     write('\r')
 
 
+def screen_linefeed():
+    write('\n')
+
+
 def screen_backspace():
     write('\x08')
 
@@ -77,8 +105,8 @@ def replay(raw):
     for line in raw.splitlines():
         if line.strip():
             cmd, rest = line.partition(' ')[::2]
-            if cmd == 'draw':
-                draw(rest)
+            if cmd in {'draw', 'set_title', 'set_icon'}:
+                globals()[cmd](rest)
             else:
                 rest = map(int, rest.split()) if rest else ()
                 globals()[cmd](*rest)

kitty/config.py

@@ -17,10 +17,11 @@ from .layout import all_layouts
 from .utils import safe_print, to_color
 
 key_pat = re.compile(r'([a-zA-Z][a-zA-Z0-9_-]*)\s+(.+)$')
+MINIMUM_FONT_SIZE = 6
 
 
 def to_font_size(x):
-    return max(6, float(x))
+    return max(MINIMUM_FONT_SIZE, float(x))
 
 
 cshapes = {
@@ -153,6 +154,7 @@ type_map = {
     'scrollback_pager': shlex.split,
     'scrollback_in_new_tab': to_bool,
     'font_size': to_font_size,
+    'font_size_delta': float,
     'cursor_shape': to_cursor_shape,
     'cursor_opacity': to_opacity,
     'open_url_modifiers': to_open_url_modifiers,
@@ -160,6 +162,7 @@ type_map = {
     'window_border_width': float,
     'wheel_scroll_multiplier': float,
     'visual_bell_duration': float,
+    'enable_audio_bell': to_bool,
     'click_interval': float,
     'mouse_hide_wait': float,
     'cursor_blink_interval': float,

kitty/constants.py

@@ -15,7 +15,7 @@ from .fast_data_types import (
     GLFW_KEY_LEFT_SUPER, GLFW_KEY_RIGHT_SUPER)
 
 appname = 'kitty'
-version = (0, 2, 0)
+version = (0, 2, 2)
 str_version = '.'.join(map(str, version))
 _plat = sys.platform.lower()
 isosx = 'darwin' in _plat

kitty/fonts/core_text.py

@@ -19,7 +19,7 @@ def install_symbol_map(val, font_size, dpi):
         symbol_map[ch] = family_map[family]
 
 
-def set_font_family(opts, ignore_dpi_failure=False):
+def set_font_family(opts, override_font_size=None, ignore_dpi_failure=False):
     global cell_width, cell_height, baseline, CellTexture, WideCellTexture, underline_thickness, underline_position
     try:
         dpi = get_logical_dpi()
@@ -37,11 +37,12 @@ def set_font_family(opts, ignore_dpi_failure=False):
         if ans == 'auto' and (bold or italic):
             ans = get_family(False, False)
         return ans
+    font_size = override_font_size or opts.font_size
 
     for bold in (False, True):
         for italic in (False, True):
-            main_font[(bold, italic)] = Face(get_family(bold, italic), bold, italic, True, opts.font_size, dpi)
-    install_symbol_map(opts.symbol_map, opts.font_size, dpi)
+            main_font[(bold, italic)] = Face(get_family(bold, italic), bold, italic, True, font_size, dpi)
+    install_symbol_map(opts.symbol_map, font_size, dpi)
     mf = main_font[(False, False)]
     cell_width, cell_height = mf.cell_size()
     CellTexture = ctypes.c_ubyte * (cell_width * cell_height)

kitty/fonts/freetype.py

@@ -71,10 +71,10 @@ def font_units_to_pixels(x, units_per_em, size_in_pts, dpi):
     return ceil_int(x * ((size_in_pts * dpi) / (72 * units_per_em)))
 
 
-def set_font_family(opts):
+def set_font_family(opts, override_font_size=None):
     global current_font_family, current_font_family_name, cff_size, cell_width, cell_height, CharTexture, baseline
     global underline_position, underline_thickness
-    size_in_pts = opts.font_size
+    size_in_pts = override_font_size or opts.font_size
     current_font_family = get_font_files(opts)
     current_font_family_name = opts.font_family
     dpi = get_logical_dpi()

kitty/gl.h

@@ -141,10 +141,14 @@ _glewInit(PyObject UNUSED *self) {
         PyErr_Format(PyExc_RuntimeError, "GLEW init failed: %s", glewGetErrorString(err));
         return NULL;
     }
-    if(!GLEW_ARB_texture_storage) {
-        PyErr_SetString(PyExc_RuntimeError, "OpenGL is missing the required ARB_texture_storage extension");
-        return NULL;
+#define ARB_TEST(name) \
+    if (!GLEW_ARB_##name) { \
+        PyErr_Format(PyExc_RuntimeError, "The OpenGL driver on this system is missing the required extension: ARB_%s", #name); \
+        return NULL; \
     }
+    ARB_TEST(texture_storage);
+    ARB_TEST(texture_buffer_object_rgb32);
+#undef ARB_TEST
 #endif
     Py_RETURN_NONE;
 }

kitty/keys.py

@@ -50,12 +50,6 @@ def rkey(name, a, b):
     return bytearray(key_as_bytes(name).replace(a, b))
 
 
-control_codes[defines.GLFW_KEY_UP] = rkey('cuu1', b'[', b'[1;5')
-control_codes[defines.GLFW_KEY_DOWN] = rkey('cud1', b'[', b'[1;5')
-control_codes[defines.GLFW_KEY_LEFT] = rkey('cub1', b'[', b'[1;5')
-control_codes[defines.GLFW_KEY_RIGHT] = rkey('cuf1', b'[', b'[1;5')
-control_codes[defines.GLFW_KEY_HOME] = rkey('khome', b'O', b'[1;5')
-control_codes[defines.GLFW_KEY_END] = rkey('kend', b'O', b'[1;5')
 control_codes[defines.GLFW_KEY_PAGE_UP] = rkey('kpp', b'~', b';5~')
 control_codes[defines.GLFW_KEY_PAGE_DOWN] = rkey('knp', b'~', b';5~')
 control_codes[defines.GLFW_KEY_DELETE] = rkey('kdch1', b'~', b';5~')
@@ -75,6 +69,10 @@ rmkx_key_map.update({
     defines.GLFW_KEY_HOME: b'\033[H',
     defines.GLFW_KEY_END: b'\033[F',
 })
+for sk in 'UP DOWN LEFT RIGHT HOME END'.split():
+    sk = getattr(defines, 'GLFW_KEY_' + sk)
+    control_codes[sk] = rmkx_key_map[sk].replace(b'[', b'[1;5')
+
 cursor_key_mode_map = {True: smkx_key_map, False: rmkx_key_map}
 
 

kitty/kitty.conf

@@ -15,6 +15,10 @@ bold_italic_font auto
 # Font size (in pts)
 font_size        11.0
 
+# The amount the font size is changed by (in pts) when increasing/decreasing
+# the font size in a running terminal.
+font_size_delta 2
+
 # The foreground color
 foreground       #dddddd
 
@@ -91,6 +95,9 @@ repaint_delay    10
 # seconds. Set to zero to disable.
 visual_bell_duration 0.0
 
+# Enable/disable the audio bell. Useful in environments that require silence.
+enable_audio_bell yes
+
 # The modifier keys to press when clicking with the mouse on URLs to open the URL
 open_url_modifiers ctrl+shift
 
@@ -212,6 +219,10 @@ map ctrl+shift+l        next_layout
 map ctrl+shift+.        move_tab_forward
 map ctrl+shift+,        move_tab_backward
 
+# Miscellaneous
+map ctrl+shift+equal    increase_font_size
+map ctrl+shift+minus    decrease_font_size
+map ctrl+shift+backspace restore_font_size
 
 # Symbol mapping (special font for specified unicode code points). Map the
 # specified unicode codepoints to a particular font. Useful if you need special

kitty/line.c

@@ -200,6 +200,14 @@ as_ansi(Line* self) {
     return ans;
 }
 
+static PyObject*
+is_continued(Line* self) {
+#define is_continued_doc "Return the line's continued flag"
+    PyObject *ans = self->continued ? Py_True : Py_False;
+    Py_INCREF(ans);
+    return ans;
+}
+
 static PyObject*
 __repr__(Line* self) {
     PyObject *s = as_unicode(self);
@@ -305,7 +313,8 @@ cursor_from(Line* self, PyObject *args) {
     return (PyObject*)ans;
 }
 
-void line_clear_text(Line *self, unsigned int at, unsigned int num, int ch) {
+void 
+line_clear_text(Line *self, unsigned int at, unsigned int num, int ch) {
     const char_type repl = ((char_type)ch & CHAR_MASK) | (1 << ATTRS_SHIFT);
     for (index_type i = at; i < MIN(self->xnum, at + num); i++) {
         self->chars[i] = (self->chars[i] & ATTRS_MASK_WITHOUT_WIDTH) | repl;
@@ -323,7 +332,8 @@ clear_text(Line* self, PyObject *args) {
     Py_RETURN_NONE;
 }
 
-void line_apply_cursor(Line *self, Cursor *cursor, unsigned int at, unsigned int num, bool clear_char) {
+void 
+line_apply_cursor(Line *self, Cursor *cursor, unsigned int at, unsigned int num, bool clear_char) {
     char_type attrs = CURSOR_TO_ATTRS(cursor, 1);
     color_type col = (cursor->fg & COL_MASK) | ((color_type)(cursor->bg & COL_MASK) << COL_SHIFT);
     decoration_type dfg = cursor->decoration_fg & COL_MASK;
@@ -390,7 +400,8 @@ left_shift(Line *self, PyObject *args) {
     Py_RETURN_NONE;
 }
  
-void line_set_char(Line *self, unsigned int at, uint32_t ch, unsigned int width, Cursor *cursor) {
+void 
+line_set_char(Line *self, unsigned int at, uint32_t ch, unsigned int width, Cursor *cursor) {
     char_type attrs;
     if (cursor == NULL) {
         attrs = (((self->chars[at] >> ATTRS_SHIFT) & ~3) | (width & 3)) << ATTRS_SHIFT;
@@ -470,6 +481,7 @@ static PyMethodDef methods[] = {
     METHOD(set_attribute, METH_VARARGS)
     METHOD(as_base_text, METH_NOARGS)
     METHOD(as_ansi, METH_NOARGS)
+    METHOD(is_continued, METH_NOARGS)
     METHOD(width, METH_O)
     METHOD(basic_cell_data, METH_O)
         

kitty/main.py

@@ -98,6 +98,19 @@ def option_parser():
         default=None,
         help=_('Replay previously dumped commands')
     )
+    a(
+        '--dump-bytes',
+        help=_('Path to file in which to store the raw bytes received from the'
+               ' child process. Useful for debugging.')
+    )
+    a(
+        '--debug-gl',
+        action='store_true',
+        default=False,
+        help=_('Debug OpenGL commands. This will cause all OpenGL calls'
+               ' to check for errors instead of ignoring them. Useful'
+               ' when debugging rendering problems.')
+    )
     a(
         '--window-layout',
         default=None,
@@ -226,7 +239,7 @@ def main():
     opts = load_config(*config, overrides=overrides)
     change_wcwidth(not opts.use_system_wcwidth)
     glfw_set_error_callback(on_glfw_error)
-    enable_automatic_opengl_error_checking(False)
+    enable_automatic_opengl_error_checking(args.debug_gl)
     if not glfw_init():
         raise SystemExit('GLFW initialization failed')
     try:

kitty/parser.c

@@ -519,16 +519,16 @@ accumulate_osc(Screen *screen, uint32_t ch, PyObject DUMP_UNUSED *dump_callback)
     switch(ch) {
         case ST:
             return true;
-        case ESC_ST:
-            if (screen->parser_buf_pos > 0 && screen->parser_buf[screen->parser_buf_pos - 1] == ESC) {
-                screen->parser_buf_pos--;
-                return true;
-            }
         case BEL:
             return true;
         case NUL:
         case DEL:
             break;
+        case ESC_ST:
+            if (screen->parser_buf_pos > 0 && screen->parser_buf[screen->parser_buf_pos - 1] == ESC) {
+                screen->parser_buf_pos--;
+                return true;
+            }
         default:
             if (screen->parser_buf_pos >= PARSER_BUF_SZ - 1) {
                 REPORT_ERROR("OSC sequence too long, truncating.");
@@ -753,6 +753,11 @@ FNAME(read_bytes)(PyObject UNUSED *self, PyObject *args) {
         /* PyObject_Print(Py_BuildValue("y#", screen->read_buf, len), stderr, 0); */
         break;
     }
+#ifdef DUMP_COMMANDS
+    if (len > 0) {
+        Py_XDECREF(PyObject_CallFunction(dump_callback, "sy#", "bytes", screen->read_buf, len)); PyErr_Clear();
+    }
+#endif
     _parse_bytes(screen, screen->read_buf, len, dump_callback);
     if(len > 0) { Py_RETURN_TRUE; }
     Py_RETURN_FALSE;

kitty/shaders.py

@@ -157,6 +157,7 @@ class Sprites:
         return glGenBuffers(1)
 
     def set_sprite_map(self, buf_id, data, usage=GL_STREAM_DRAW):
+        self.bind_sprite_map(buf_id)
         glNamedBufferData(buf_id, sizeof(data), addressof(data), usage)
 
     def bind_sprite_map(self, buf_id):

kitty/window.py

@@ -39,7 +39,9 @@ class Window:
         self.child_fd = child.child_fd
         self.start_visual_bell_at = None
         self.screen = Screen(self, 24, 80, opts.scrollback_lines)
-        self.read_bytes = partial(read_bytes_dump, self.dump_commands) if args.dump_commands else read_bytes
+        self.read_bytes = partial(read_bytes_dump, self.dump_commands) if args.dump_commands or args.dump_bytes else read_bytes
+        if args.dump_bytes:
+            self.dump_bytes_to = open(args.dump_bytes, 'ab')
         self.draw_dump_buf = []
         self.write_buf = memoryview(b'')
         self.char_grid = CharGrid(self.screen, opts)
@@ -108,11 +110,12 @@ class Window:
         wakeup()
 
     def bell(self):
-        try:
-            with open('/dev/tty', 'wb') as f:
-                f.write(b'\007')
-        except EnvironmentError:
-            pass  # failure to beep is not critical
+        if self.opts.enable_audio_bell:
+            try:
+                with open('/dev/tty', 'wb') as f:
+                    f.write(b'\007')
+            except EnvironmentError:
+                pass  # failure to beep is not critical
         if self.opts.visual_bell_duration > 0:
             self.start_visual_bell_at = monotonic()
             glfw_post_empty_event()
@@ -346,6 +349,9 @@ class Window:
                         self.draw_dump_buf = []
                 else:
                     self.draw_dump_buf.append(a[1])
+            elif a[0] == 'bytes':
+                self.dump_bytes_to.write(a[1])
+                self.dump_bytes_to.flush()
             else:
                 if self.draw_dump_buf:
                     safe_print('draw', ''.join(self.draw_dump_buf))

kitty_tests/parser.py

@@ -156,9 +156,9 @@ class TestParser(BaseTest):
         s = self.create_screen()
         pb = partial(self.parse_bytes_dump, s)
         c = s.callbacks
-        pb('a\033]2;xyz\x9cbcde', 'a', ('set_title', 'xyz'), 'bcde')
+        pb('a\033]2;x\\ryz\x9cbcde', 'a', ('set_title', 'x\\ryz'), 'bcde')
         self.ae(str(s.line(0)), 'abcde')
-        self.ae(c.titlebuf, 'xyz')
+        self.ae(c.titlebuf, 'x\\ryz')
         c.clear()
         pb('\033]\x07', ('set_title', ''), ('set_icon', ''))
         self.ae(c.titlebuf, ''), self.ae(c.iconbuf, '')
@@ -181,4 +181,4 @@ class TestParser(BaseTest):
         pb = partial(self.parse_bytes_dump, s)
         for prefix in '\033_', '\033^', '\u009e', '\u009f':
             for suffix in '\u009c', '\033\\':
-                pb('a{}+++{}bcde'.format(prefix, suffix), 'abcde')
+                pb('a{}+\\++{}bcde'.format(prefix, suffix), 'abcde')

protocol-extensions.asciidoc

@@ -7,6 +7,15 @@ These are typically in the form of new or re-purposed escape codes. While these
 extensions are currently kitty specific, it would be nice to get some of them
 adopted more broadly, to push the state of terminal emulators forward.
 
+The goal of these extensions is to be as small an unobtrusive as possible,
+while filling in some gaps in the existing xterm protocol. In particular, one
+of the goals of this specification is explicitly not to "re-imagine" the tty.
+The tty should remain what it is -- a device for efficiently processing text
+received as a simple byte stream. Another objective is to only move the minimum
+possible amount of extra functionality into the terminal program itself. This
+is to make it as easy to implement these protocol extensions as possible,
+thereby hopefully encouraging their widespread adoption.
+
 If you wish to discuss these extensions, propose additions/changes to them
 please do so by opening issues in the github bug tracker.
 
@@ -19,9 +28,6 @@ in terminal editors such as vim and emacs to display red, wavy underlines under
 mis-spelled words and/or syntax errors. This is done by re-purposing some SGR escape codes
 that are not used in modern terminals (https://en.wikipedia.org/wiki/ANSI_escape_code#CSI_codes)
 
-Setting the width and/or height to zero means that no drawing is done and the
-cursor position remains unchanged.
-
 To change the underline style from straight line to curl (this used to be the
 code for rapid blinking text, only previous use I know of was in MS-DOS ANSI.sys):
 

setup.py

@@ -88,8 +88,9 @@ def get_python_flags(cflags):
     return libs
 
 
-def init_env(debug=False, asan=False):
+def init_env(debug=False, asan=False, native_optimizations=True):
     global cflags, ldflags, cc, ldpaths
+    native_optimizations = native_optimizations and not asan and not debug
     ccver = cc_version()
     stack_protector = '-fstack-protector'
     if ccver >= (4, 9):
@@ -106,8 +107,11 @@ def init_env(debug=False, asan=False):
     cflags = os.environ.get(
         'OVERRIDE_CFLAGS', (
             '-Wextra -Wno-missing-field-initializers -Wall -std=c99 -D_XOPEN_SOURCE=700'
-            ' -pedantic-errors -Werror {} -DNDEBUG -fwrapv {} {} -pipe'
-        ).format(optimize, stack_protector, missing_braces)
+            ' -pedantic-errors -Werror {} -DNDEBUG -fwrapv {} {} -pipe {}'
+        ).format(
+            optimize, stack_protector, missing_braces, '-march=native'
+            if native_optimizations else ''
+        )
     )
     cflags = shlex.split(cflags
                          ) + shlex.split(sysconfig.get_config_var('CCSHARED'))
@@ -263,8 +267,8 @@ def find_c_files():
     return tuple(ans), tuple(headers)
 
 
-def build(args):
-    init_env(args.debug, args.asan)
+def build(args, native_optimizations=True):
+    init_env(args.debug, args.asan, native_optimizations)
     compile_c_extension(
         'kitty/fast_data_types', args.incremental, *find_c_files()
     )
@@ -361,10 +365,10 @@ def main():
             sys.executable, sys.executable, os.path.join(base, 'test.py')
         )
     elif args.action == 'linux-package':
-        build(args)
+        build(args, native_optimizations=False)
         package(args)
     elif args.action == 'osx-bundle':
-        build(args)
+        build(args, native_optimizations=False)
         package(args, for_bundle=True)