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Implement keyboard shortcuts for scrolling

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This commit is contained in:
Kovid Goyal
2016-11-21 20:48:51 +05:30
parent b1dba240ca
commit b426210e38
5 changed files with 60 additions and 5 deletions
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kitty/screen.c
+32 -2
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@@ -1029,11 +1029,40 @@ screen_update_cell_data(Screen *self, PyObject *args) {
if (!PyArg_ParseTuple(args, "O!O!O!kkp", &SpriteMap_Type, &spm, &ColorProfile_Type, &color_profile, &PyLong_Type, &dp, &default_fg, &default_bg, &force_screen_refresh)) return NULL;
data = PyLong_AsVoidPtr(dp);
PyObject *cursor_changed = self->change_tracker->cursor_changed ? Py_True : Py_False;
unsigned int history_line_added_count = self->change_tracker->history_line_added_count;
if (!tracker_update_cell_data(self->change_tracker, self->linebuf, spm, color_profile, data, default_fg, default_bg, (bool)force_screen_refresh)) return NULL;
Py_INCREF(cursor_changed);
return cursor_changed;
return Py_BuildValue("OI", cursor_changed, history_line_added_count);
}
static PyObject*
set_scroll_cell_data(Screen *self, PyObject *args) {
SpriteMap *spm;
ColorProfile *color_profile;
PyObject *dp, *sp;
unsigned int *data, *src, scrolled_by;
unsigned long default_bg, default_fg;
if (!PyArg_ParseTuple(args, "O!O!O!kkIO", &SpriteMap_Type, &spm, &ColorProfile_Type, &color_profile, &PyLong_Type, &sp, &default_fg, &default_bg, &scrolled_by, &dp)) return NULL;
data = PyLong_AsVoidPtr(dp);
src = PyLong_AsVoidPtr(sp);
unsigned int line_size = 9 * self->columns;
scrolled_by = MIN(self->historybuf->count, scrolled_by);
for (index_type y = 0; y < MIN(self->lines, scrolled_by); y++) {
historybuf_init_line(self->historybuf, scrolled_by - y, self->historybuf->line);
self->historybuf->line->ynum = y;
if (!update_cell_range_data(spm, self->historybuf->line, 0, self->columns - 1, color_profile, default_bg, default_fg, data)) return NULL;
}
if (scrolled_by < self->lines) {
// Less than a full screen has been scrolled, copy some lines from the screen buffer to the scroll buffer
index_type num_to_copy = self->lines - scrolled_by;
index_type offset = line_size * scrolled_by;
memcpy(data + offset, src, line_size * num_to_copy * sizeof(unsigned int));
}
Py_RETURN_NONE;
}
static PyObject* is_dirty(Screen *self) {
PyObject *ans = self->change_tracker->dirty ? Py_True : Py_False;
Py_INCREF(ans);
@@ -1096,6 +1125,7 @@ static PyMethodDef methods[] = {
MND(reverse_index, METH_NOARGS)
MND(is_dirty, METH_NOARGS)
MND(resize, METH_VARARGS)
MND(set_scroll_cell_data, METH_VARARGS)
{"update_cell_data", (PyCFunction)screen_update_cell_data, METH_VARARGS, ""},
{NULL} /* Sentinel */