/* this scrolls the text so that cursor is on the screen */
void edit_scroll_screen_over_cursor (WEdit * edit)
{
int p;
int outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (edit->num_widget_lines <= 0 || edit->num_widget_columns <= 0)
return;
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len) {
b_extreme = max (edit->num_widget_lines / 4, b_extreme);
t_extreme = max (edit->num_widget_lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > edit->num_widget_lines) {
int n;
n = b_extreme + t_extreme;
b_extreme = (b_extreme * (edit->num_widget_lines - 1)) / n;
t_extreme = (t_extreme * (edit->num_widget_lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > edit->num_widget_columns) {
int n;
n = l_extreme + t_extreme;
l_extreme = (l_extreme * (edit->num_widget_columns - 1)) / n;
r_extreme = (r_extreme * (edit->num_widget_columns - 1)) / n;
}
p = edit_get_col (edit);
edit_update_curs_row (edit);
outby = p + edit->start_col - edit->num_widget_columns + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - edit->num_widget_lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
}
static void
edit_total_update (WEdit * edit)
{
edit_find_bracket (edit);
edit->force |= REDRAW_COMPLETELY;
edit_update_curs_row (edit);
edit_update_screen (edit);
}
/**
* Handle mouse events of editor window
*
* @param w Widget object (the editor window)
* @param msg mouse event message
* @param event mouse event data
*/
static void
edit_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
{
WEdit *edit = (WEdit *) w;
/* buttons' distance from right edge */
int dx = edit->fullscreen ? 0 : 2;
/* location of 'Close' and 'Toggle fullscreen' pictograms */
int close_x, toggle_fullscreen_x;
close_x = (w->cols - 1) - dx - 1;
toggle_fullscreen_x = close_x - 3;
if (edit->drag_state != MCEDIT_DRAG_NONE)
{
/* window is being resized/moved */
edit_mouse_handle_move_resize (w, msg, event);
return;
}
/* If it's the last line on the screen, we abort the event to make the
* system channel it to the overlapping buttonbar instead. We have to do
* this because a WEdit has the WOP_TOP_SELECT flag, which makes it above
* the buttonbar in Z-order. */
if (msg == MSG_MOUSE_DOWN && (event->y + w->y == LINES - 1))
{
event->result.abort = TRUE;
return;
}
switch (msg)
{
case MSG_MOUSE_DOWN:
widget_select (w);
edit_update_curs_row (edit);
edit_update_curs_col (edit);
if (!edit->fullscreen)
{
if (event->y == 0)
{
if (event->x >= close_x - 1 && event->x <= close_x + 1)
; /* do nothing (see MSG_MOUSE_CLICK) */
else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
; /* do nothing (see MSG_MOUSE_CLICK) */
else
{
/* start window move */
edit_execute_cmd (edit, CK_WindowMove, -1);
edit_update_screen (edit); /* Paint the buttonbar over our possibly overlapping frame. */
edit->drag_state_start = event->x;
}
break;
}
if (event->y == w->lines - 1 && event->x == w->cols - 1)
{
/* bottom-right corner -- start window resize */
edit_execute_cmd (edit, CK_WindowResize, -1);
break;
}
}
MC_FALLTHROUGH; /* to start/stop text selection */
case MSG_MOUSE_UP:
edit_update_cursor (edit, event);
edit_total_update (edit);
break;
case MSG_MOUSE_CLICK:
if (event->y == 0)
{
if (event->x >= close_x - 1 && event->x <= close_x + 1)
send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
edit_toggle_fullscreen (edit);
else if (!edit->fullscreen && event->count == GPM_DOUBLE)
/* double click on top line (toggle fullscreen) */
edit_toggle_fullscreen (edit);
}
else if (event->count == GPM_DOUBLE)
{
/* double click */
edit_mark_current_word_cmd (edit);
edit_total_update (edit);
}
else if (event->count == GPM_TRIPLE)
{
/* triple click: works in GPM only, not in xterm */
edit_mark_current_line_cmd (edit);
edit_total_update (edit);
}
break;
case MSG_MOUSE_DRAG:
edit_update_cursor (edit, event);
edit_total_update (edit);
break;
case MSG_MOUSE_SCROLL_UP:
edit_move_up (edit, 2, TRUE);
edit_total_update (edit);
break;
case MSG_MOUSE_SCROLL_DOWN:
edit_move_down (edit, 2, TRUE);
edit_total_update (edit);
break;
default:
break;
}
}
/** this scrolls the text so that cursor is on the screen */
void
edit_scroll_screen_over_cursor (WEdit * edit)
{
int p;
int outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (edit->widget.lines <= 0 || edit->widget.cols <= 0)
return;
edit->widget.cols -= EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
edit->widget.lines -= EDIT_TEXT_VERTICAL_OFFSET;
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len)
{
b_extreme = max (edit->widget.lines / 4, b_extreme);
t_extreme = max (edit->widget.lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > edit->widget.lines)
{
int n;
n = b_extreme + t_extreme;
if (n == 0)
n = 1;
b_extreme = (b_extreme * (edit->widget.lines - 1)) / n;
t_extreme = (t_extreme * (edit->widget.lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > edit->widget.cols)
{
int n;
n = l_extreme + t_extreme;
if (n == 0)
n = 1;
l_extreme = (l_extreme * (edit->widget.cols - 1)) / n;
r_extreme = (r_extreme * (edit->widget.cols - 1)) / n;
}
p = edit_get_col (edit) + edit->over_col;
edit_update_curs_row (edit);
outby = p + edit->start_col - edit->widget.cols + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - edit->widget.lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
edit->widget.lines += EDIT_TEXT_VERTICAL_OFFSET;
edit->widget.cols += EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
}
static int
edit_event (Gpm_Event * event, void *data)
{
WEdit *edit = (WEdit *) data;
/* Unknown event type */
if (!(event->type & (GPM_DOWN | GPM_DRAG | GPM_UP)))
return MOU_NORMAL;
edit_update_curs_row (edit);
edit_update_curs_col (edit);
/* Outside editor window */
if (event->y < 1 || event->x < 1
|| event->x > edit->widget.cols || event->y > edit->widget.lines)
return MOU_NORMAL;
/* Double click */
if ((event->type & (GPM_DOUBLE | GPM_UP)) == (GPM_UP | GPM_DOUBLE))
{
edit_mark_current_word_cmd (edit);
goto update;
}
#if 0
/* Triple click */
if ((event->type & (GPM_TRIPLE | GPM_UP)) == (GPM_UP | GPM_TRIPLE))
{
edit_mark_current_line_cmd (edit);
goto update;
}
#endif
/* Wheel events */
if ((event->buttons & GPM_B_UP) && (event->type & GPM_DOWN))
{
edit_move_up (edit, 2, 1);
goto update;
}
if ((event->buttons & GPM_B_DOWN) && (event->type & GPM_DOWN))
{
edit_move_down (edit, 2, 1);
goto update;
}
/* A lone up mustn't do anything */
if (edit->mark2 != -1 && event->type & (GPM_UP | GPM_DRAG))
return MOU_NORMAL;
if (event->type & (GPM_DOWN | GPM_UP))
edit_push_key_press (edit);
if (!option_cursor_beyond_eol)
edit->prev_col = event->x - edit->start_col - option_line_state_width - 1;
else
{
long line_len = edit_move_forward3 (edit, edit_bol (edit, edit->curs1), 0,
edit_eol (edit, edit->curs1));
if (event->x > line_len)
{
edit->over_col = event->x - line_len - edit->start_col - option_line_state_width - 1;
edit->prev_col = line_len;
}
else
{
edit->over_col = 0;
edit->prev_col = event->x - option_line_state_width - edit->start_col - 1;
}
}
--event->y;
if (event->y > edit->curs_row)
edit_move_down (edit, event->y - edit->curs_row, 0);
else if (event->y < edit->curs_row)
edit_move_up (edit, edit->curs_row - event->y, 0);
else
edit_move_to_prev_col (edit, edit_bol (edit, edit->curs1));
if (event->type & GPM_DOWN)
{
edit_mark_cmd (edit, 1); /* reset */
edit->highlight = 0;
}
if (!(event->type & GPM_DRAG))
edit_mark_cmd (edit, 0);
update:
edit_find_bracket (edit);
edit->force |= REDRAW_COMPLETELY;
edit_update_curs_row (edit);
edit_update_curs_col (edit);
edit_update_screen (edit);
return MOU_NORMAL;
}
static int
edit_event (Gpm_Event * event, void *data)
{
WEdit *edit = (WEdit *) data;
Widget *w = WIDGET (data);
Gpm_Event local;
if (!mouse_global_in_widget (event, w))
return MOU_UNHANDLED;
local = mouse_get_local (event, w);
/* Unknown event type */
if ((event->type & (GPM_DOWN | GPM_DRAG | GPM_UP)) == 0)
return MOU_NORMAL;
dlg_set_top_widget (w);
edit_update_curs_row (edit);
edit_update_curs_col (edit);
if (edit->fullscreen || (local.buttons & GPM_B_LEFT) == 0 || (local.type & GPM_UP) != 0)
edit->drag_state = MCEDIT_DRAG_NORMAL;
else if (local.y == 1 && edit->drag_state != MCEDIT_DRAG_RESIZE)
{
/* click on the top line (move) */
int dx = edit->fullscreen ? 0 : 2;
if (local.x == w->cols - dx - 1)
{
send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
return MOU_NORMAL;
}
if (local.x == w->cols - dx - 4)
{
edit_toggle_fullscreen (edit);
return MOU_NORMAL;
}
if ((local.type & (GPM_DOWN | GPM_DRAG)) != 0)
{
/* move if not fullscreen */
edit->drag_state_start = local.x;
edit->drag_state = MCEDIT_DRAG_MOVE;
edit->force |= REDRAW_COMPLETELY;
edit_update_screen (edit);
}
}
else if (!edit->fullscreen && local.y == w->lines && local.x == w->cols)
{
/* click on bottom-right corner (resize) */
if ((local.type & (GPM_DOWN | GPM_DRAG)) != 0)
{
edit->drag_state = MCEDIT_DRAG_RESIZE;
edit->force |= REDRAW_COMPLETELY;
edit_update_screen (edit);
}
}
if (edit->drag_state == MCEDIT_DRAG_NORMAL)
{
gboolean done = TRUE;
/* Double click */
if ((local.type & (GPM_DOUBLE | GPM_UP)) == (GPM_UP | GPM_DOUBLE))
{
edit_mark_current_word_cmd (edit);
goto update;
}
#if 0
/* Triple click */
if ((local.type & (GPM_TRIPLE | GPM_UP)) == (GPM_UP | GPM_TRIPLE))
{
edit_mark_current_line_cmd (edit);
goto update;
}
#endif
/* Wheel events */
if ((local.buttons & GPM_B_UP) != 0 && (local.type & GPM_DOWN) != 0)
{
edit_move_up (edit, 2, 1);
goto update;
}
if ((local.buttons & GPM_B_DOWN) != 0 && (local.type & GPM_DOWN) != 0)
{
edit_move_down (edit, 2, 1);
goto update;
}
/* continue handle current event */
goto cont;
/* handle DRAG mouse event, don't use standard way to continue
* event handling outside of widget */
do
{
int c;
c = tty_get_event (event, FALSE, TRUE);
if (c == EV_NONE || c != EV_MOUSE)
break;
local = mouse_get_local (event, w);
cont:
/* A lone up mustn't do anything */
if (edit->mark2 != -1 && (local.type & (GPM_UP | GPM_DRAG)) != 0)
return MOU_NORMAL;
if ((local.type & (GPM_DOWN | GPM_UP)) != 0)
edit_push_key_press (edit);
if (!edit->fullscreen)
local.x--;
if (!option_cursor_beyond_eol)
edit->prev_col = local.x - edit->start_col - option_line_state_width - 1;
else
{
long line_len;
line_len = edit_move_forward3 (edit, edit_buffer_get_current_bol (&edit->buffer), 0,
edit_buffer_get_current_eol (&edit->buffer));
if (local.x > line_len)
{
edit->over_col =
local.x - line_len - edit->start_col - option_line_state_width - 1;
edit->prev_col = line_len;
}
else
{
edit->over_col = 0;
edit->prev_col = local.x - option_line_state_width - edit->start_col - 1;
}
}
if (!edit->fullscreen)
local.y--;
if (local.y > (edit->curs_row + 1))
edit_move_down (edit, local.y - (edit->curs_row + 1), 0);
else if (local.y < (edit->curs_row + 1))
edit_move_up (edit, (edit->curs_row + 1) - local.y, 0);
else
edit_move_to_prev_col (edit, edit_buffer_get_current_bol (&edit->buffer));
if ((local.type & GPM_DOWN) != 0)
{
edit_mark_cmd (edit, TRUE); /* reset */
edit->highlight = 0;
}
done = (local.type & GPM_DRAG) == 0;
if (done)
edit_mark_cmd (edit, FALSE);
update:
edit_find_bracket (edit);
edit->force |= REDRAW_COMPLETELY;
edit_update_curs_row (edit);
edit_update_curs_col (edit);
edit_update_screen (edit);
}
while (!edit->fullscreen && !done);
}
else
while (edit->drag_state != MCEDIT_DRAG_NORMAL)
{
int c;
int y;
c = tty_get_event (event, FALSE, TRUE);
y = event->y - 1;
if (c == EV_NONE || c != EV_MOUSE)
{
/* redraw frame */
edit->drag_state = MCEDIT_DRAG_NORMAL;
edit->force |= REDRAW_COMPLETELY;
edit_update_screen (edit);
}
else if (y == w->y && (event->type & (GPM_DOUBLE | GPM_UP)) == (GPM_DOUBLE | GPM_UP))
{
/* double click on top line (toggle fullscreen) */
edit_toggle_fullscreen (edit);
edit->drag_state = MCEDIT_DRAG_NORMAL;
edit->force |= REDRAW_COMPLETELY;
edit_update_screen (edit);
}
else if ((event->type & (GPM_DRAG | GPM_DOWN)) == 0)
{
/* redraw frame */
edit->drag_state = MCEDIT_DRAG_NORMAL;
edit->force |= REDRAW_COMPLETELY;
edit_update_screen (edit);
}
else if (!edit->fullscreen)
{
Widget *h = WIDGET (w->owner);
if (edit->drag_state == MCEDIT_DRAG_MOVE)
{
int x = event->x - 1;
y = max (y, h->y + 1); /* status line */
y = min (y, h->y + h->lines - 2); /* buttonbar */
x = max (x, h->x);
x = min (x, h->x + h->cols - 1);
/* don't use widget_set_size() here to avoid double draw */
w->y = y;
w->x = x - edit->drag_state_start;
edit->force |= REDRAW_COMPLETELY;
}
else if (edit->drag_state == MCEDIT_DRAG_RESIZE)
{
event->y = min (event->y, h->y + h->lines - 1); /* buttonbar */
event->x = min (event->x, h->x + h->cols);
local = mouse_get_local (event, w);
/* don't use widget_set_size() here to avoid double draw */
w->lines = max (WINDOW_MIN_LINES, local.y);
w->cols = max (WINDOW_MIN_COLS, local.x);
edit->force |= REDRAW_COMPLETELY;
}
dlg_redraw (w->owner);
}
}
return MOU_NORMAL;
}
/** this scrolls the text so that cursor is on the screen */
void
edit_scroll_screen_over_cursor (WEdit * edit)
{
Widget *w = WIDGET (edit);
long p;
long outby;
int b_extreme, t_extreme, l_extreme, r_extreme;
if (w->lines <= 0 || w->cols <= 0)
return;
w->lines -= EDIT_TEXT_VERTICAL_OFFSET;
w->cols -= EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
if (!edit->fullscreen)
{
w->x++;
w->cols -= 2;
w->y++;
w->lines -= 2;
}
r_extreme = EDIT_RIGHT_EXTREME;
l_extreme = EDIT_LEFT_EXTREME;
b_extreme = EDIT_BOTTOM_EXTREME;
t_extreme = EDIT_TOP_EXTREME;
if (edit->found_len != 0)
{
b_extreme = max (w->lines / 4, b_extreme);
t_extreme = max (w->lines / 4, t_extreme);
}
if (b_extreme + t_extreme + 1 > w->lines)
{
int n;
n = b_extreme + t_extreme;
if (n == 0)
n = 1;
b_extreme = (b_extreme * (w->lines - 1)) / n;
t_extreme = (t_extreme * (w->lines - 1)) / n;
}
if (l_extreme + r_extreme + 1 > w->cols)
{
int n;
n = l_extreme + t_extreme;
if (n == 0)
n = 1;
l_extreme = (l_extreme * (w->cols - 1)) / n;
r_extreme = (r_extreme * (w->cols - 1)) / n;
}
p = edit_get_col (edit) + edit->over_col;
edit_update_curs_row (edit);
outby = p + edit->start_col - w->cols + 1 + (r_extreme + edit->found_len);
if (outby > 0)
edit_scroll_right (edit, outby);
outby = l_extreme - p - edit->start_col;
if (outby > 0)
edit_scroll_left (edit, outby);
p = edit->curs_row;
outby = p - w->lines + 1 + b_extreme;
if (outby > 0)
edit_scroll_downward (edit, outby);
outby = t_extreme - p;
if (outby > 0)
edit_scroll_upward (edit, outby);
edit_update_curs_row (edit);
w->lines += EDIT_TEXT_VERTICAL_OFFSET;
w->cols += EDIT_TEXT_HORIZONTAL_OFFSET + option_line_state_width;
if (!edit->fullscreen)
{
w->x--;
w->cols += 2;
w->y--;
w->lines += 2;
}
}