/*! \brief Draw temporary line while dragging end.
* \par Function Description
* This function manages the erase/update/draw process of temporary line
* when modifying one end of the line.
* The line is described by four <B>*w_current</B> variables : the first end
* of the line is (<B>first_wx</B>,<B>first_wy</B>), the second end is
* (<B>second_wx</B>,<B>second_wy</B>).
* The first end is constant. The second end is updated to the (<B>w_x</B>,<B>w_y</B>).
*
* \param [in] w_current The GSCHEM_TOPLEVEL object.
* \param [in] w_x Current x coordinate of pointer in world units.
* \param [in] w_y Current y coordinate of pointer in world units.
*/
void o_line_motion (GSCHEM_TOPLEVEL *w_current, int w_x, int w_y)
{
int diff_x, diff_y;
g_assert( w_current->inside_action != 0 );
if (w_current->rubber_visible)
o_line_invalidate_rubber (w_current);
/*
* The coordinates of the moving end of the line are updated. Its new
* coordinates are in <B>w_x</B> and <B>w_y</B> parameters and saved to
* <B>w_current->second_wx</B> and <B>w_current->second_wy</B> respectively.
*/
w_current->second_wx = w_x;
w_current->second_wy = w_y;
/* if the control key was pressed then draw ortho lines */
if (w_current->CONTROLKEY) {
diff_x = abs(w_current->second_wx - w_current->first_wx);
diff_y = abs(w_current->second_wy - w_current->first_wy);
if (diff_x >= diff_y) {
w_current->second_wy = w_current->first_wy;
} else {
w_current->second_wx = w_current->first_wx;
}
}
o_line_invalidate_rubber (w_current);
w_current->rubber_visible = 1;
}
/*! \brief Start process to input a new line.
* \par Function Description
* This function starts the process of interactively adding a line to
* the current sheet.
*
* During all the process, the line is internally represented by the two
* ends of the line as (<B>w_current->first_wx</B>,<B>w_current->first_wy</B>) and
* (<B>w_current->second_wx</B>,<B>w_current->second_wy</B>).
*
* A temporary line is drawn during the process with the selection color
* and changed according to the position of the mouse pointer.
*
* \param [in] w_current The GSCHEM_TOPLEVEL object.
* \param [in] w_x Current x coordinate of pointer in world units.
* \param [in] w_y Current y coordinate of pointer in world units.
*/
void o_line_start(GSCHEM_TOPLEVEL *w_current, int w_x, int w_y)
{
/* init first_w[x|y], second_w[x|y] to describe line */
w_current->first_wx = w_current->second_wx = w_x;
w_current->first_wy = w_current->second_wy = w_y;
o_line_invalidate_rubber (w_current);
w_current->rubber_visible = 1;
}
/*! \todo Finish function documentation!!!
* \brief
* \par Function Description
*
*/
gint
x_event_button_pressed(GschemPageView *page_view, GdkEventButton *event, GschemToplevel *w_current)
{
PAGE *page = gschem_page_view_get_page (page_view);
int w_x, w_y;
int unsnapped_wx, unsnapped_wy;
g_return_val_if_fail ((w_current != NULL), 0);
if (page == NULL) {
return TRUE; /* terminate event */
}
if (!gtk_widget_has_focus (GTK_WIDGET (page_view))) {
gtk_widget_grab_focus (GTK_WIDGET (page_view));
}
scm_dynwind_begin ((scm_t_dynwind_flags) 0);
g_dynwind_window (w_current);
#if DEBUG
printf("pressed button %d! \n", event->button);
printf("event state: %d \n", event->state);
printf("w_current state: %d \n", w_current->event_state);
printf("Selection is:\n");
o_selection_print_all(&(page->selection_list));
printf("\n");
#endif
gschem_page_view_SCREENtoWORLD (page_view, (int) event->x, (int) event->y,
&unsnapped_wx, &unsnapped_wy);
w_x = snap_grid (w_current, unsnapped_wx);
w_y = snap_grid (w_current, unsnapped_wy);
if (event->type == GDK_2BUTTON_PRESS &&
w_current->event_state == SELECT) {
/* Don't re-select an object (lp-912978) */
/* o_find_object(w_current, w_x, w_y, TRUE); */
/* GDK_BUTTON_EVENT is emitted before GDK_2BUTTON_EVENT, which
* leads to setting of the inside_action flag. If o_edit()
* brings up a modal window (e.g., the edit attribute dialog),
* it intercepts the release button event and thus doesn't
* allow resetting of the inside_action flag so we do it
* manually here before processing the double-click event. */
i_action_stop (w_current);
o_edit(w_current, geda_list_get_glist( page->selection_list ));
scm_dynwind_end ();
return(0);
}
w_current->SHIFTKEY = (event->state & GDK_SHIFT_MASK ) ? 1 : 0;
w_current->CONTROLKEY = (event->state & GDK_CONTROL_MASK) ? 1 : 0;
w_current->ALTKEY = (event->state & GDK_MOD1_MASK) ? 1 : 0;
/* Huge switch statement to evaluate state transitions. Jump to
* end_button_pressed label to escape the state evaluation rather than
* returning from the function directly. */
if (event->button == 1) {
if (w_current->inside_action) {
/* End action */
if (page->place_list != NULL) {
switch(w_current->event_state) {
case (COMPMODE) : o_place_end(w_current, w_x, w_y, w_current->continue_component_place,
"%add-objects-hook"); break;
case (TEXTMODE) : o_place_end(w_current, w_x, w_y, FALSE,
"%add-objects-hook"); break;
case (PASTEMODE) : o_place_end(w_current, w_x, w_y, FALSE,
"%paste-objects-hook"); break;
default: break;
}
} else {
switch(w_current->event_state) {
case (ARCMODE) : o_arc_end1(w_current, w_x, w_y); break;
case (BOXMODE) : o_box_end(w_current, w_x, w_y); break;
case (BUSMODE) : o_bus_end(w_current, w_x, w_y); break;
case (CIRCLEMODE) : o_circle_end(w_current, w_x, w_y); break;
case (LINEMODE) : o_line_end(w_current, w_x, w_y); break;
case (NETMODE) : o_net_end(w_current, w_x, w_y); break;
case (PATHMODE) : o_path_continue (w_current, w_x, w_y); break;
case (PICTUREMODE): o_picture_end(w_current, w_x, w_y); break;
case (PINMODE) : o_pin_end (w_current, w_x, w_y); break;
default: break;
}
}
} else {
/* Start action */
switch(w_current->event_state) {
case (ARCMODE) : o_arc_start(w_current, w_x, w_y); break;
case (BOXMODE) : o_box_start(w_current, w_x, w_y); break;
case (BUSMODE) : o_bus_start(w_current, w_x, w_y); break;
case (CIRCLEMODE) : o_circle_start(w_current, w_x, w_y); break;
case (LINEMODE) : o_line_start(w_current, w_x, w_y); break;
case (NETMODE) : o_net_start(w_current, w_x, w_y); break;
case (PATHMODE) : o_path_start (w_current, w_x, w_y); break;
case (PICTUREMODE): o_picture_start(w_current, w_x, w_y); break;
case (PINMODE) : o_pin_start (w_current, w_x, w_y); break;
case (ZOOMBOX) : a_zoom_box_start(w_current, unsnapped_wx, unsnapped_wy); break;
case (SELECT) : o_select_start(w_current, w_x, w_y); break;
case (COPYMODE) :
case (MCOPYMODE) : o_copy_start(w_current, w_x, w_y); break;
case (MOVEMODE) : o_move_start(w_current, w_x, w_y); break;
default: break;
}
}
switch(w_current->event_state) {
case(ROTATEMODE): o_rotate_world_update(w_current, w_x, w_y, 90,
geda_list_get_glist(page->selection_list)); break;
case(MIRRORMODE): o_mirror_world_update(w_current, w_x, w_y,
geda_list_get_glist(page->selection_list)); break;
case(PAN):
gschem_page_view_pan (page_view, w_x, w_y);
i_set_state(w_current, SELECT);
break;
}
} else if (event->button == 2) {
/* try this out and see how it behaves */
if (w_current->inside_action) {
if (!(w_current->event_state == COMPMODE||
w_current->event_state == TEXTMODE||
w_current->event_state == MOVEMODE||
w_current->event_state == COPYMODE ||
w_current->event_state == MCOPYMODE ||
w_current->event_state == PASTEMODE )) {
i_callback_cancel(w_current, 0, NULL);
}
goto end_button_pressed;
}
switch(w_current->middle_button) {
case(ACTION):
/* don't want to search if shift */
/* key is pressed */
if (!w_current->SHIFTKEY) {
o_find_object(w_current, unsnapped_wx, unsnapped_wy, TRUE);
}
/* make sure the list is not empty */
if (!o_select_selected(w_current)) {
/* this means the above find did not
* find anything */
i_action_stop (w_current);
i_set_state(w_current, SELECT);
goto end_button_pressed;
}
/* determine here if copy or move */
if (w_current->ALTKEY) {
i_set_state(w_current, COPYMODE);
o_copy_start(w_current, w_x, w_y);
} else {
o_move_start(w_current, w_x, w_y);
}
break;
case(REPEAT):
if (w_current->last_callback != NULL) {
(*w_current->last_callback)(w_current, 0, NULL);
}
break;
#ifdef HAVE_LIBSTROKE
case(STROKE):
DOING_STROKE=TRUE;
break;
#endif /* HAVE_LIBSTROKE */
case(MID_MOUSEPAN_ENABLED):
gschem_page_view_pan_start (page_view, (int) event->x, (int) event->y);
break;
}
} else if (event->button == 3) {
if (!w_current->inside_action) {
if (w_current->third_button == POPUP_ENABLED) {
/* (third-button "popup") */
i_update_menus(w_current); /* update menus before popup */
do_popup(w_current, event);
} else {
/* (third-button "mousepan") */
gschem_page_view_pan_start (page_view, (int) event->x, (int) event->y);
}
} else {
if ((w_current->third_button == MOUSEPAN_ENABLED) &&
(!w_current->third_button_cancel)) {
gschem_page_view_pan_start (page_view, (int) event->x, (int) event->y);
} else { /* this is the default cancel */
/* reset all draw and place actions */
switch (w_current->event_state) {
case (ARCMODE) : o_arc_invalidate_rubber (w_current); break;
case (BOXMODE) : o_box_invalidate_rubber (w_current); break;
case (BUSMODE) : o_bus_invalidate_rubber (w_current); break;
case (CIRCLEMODE) : o_circle_invalidate_rubber (w_current); break;
case (LINEMODE) : o_line_invalidate_rubber (w_current); break;
case (NETMODE) : o_net_reset (w_current); break;
case (PATHMODE) : o_path_invalidate_rubber (w_current); break;
case (PICTUREMODE): o_picture_invalidate_rubber (w_current); break;
case (PINMODE) : o_pin_invalidate_rubber (w_current); break;
default:
i_callback_cancel(w_current, 0, NULL);
break;
}
}
}
}
end_button_pressed:
scm_dynwind_end ();
return(0);
}