/*! \brief Draw an arc using one angle modification.
* \par Function Description
* This function draws an arc according to its internal representation
* and allows the modification of one of its angle. The start or end
* angle of the arc is updated according to <B>whichone</B> with the angle
* that the current pointer and the arc center are making with the horizontal.
*
* The previous temporary arc is erased, the angle is then computed
* and updated and finally a new temporary arc with the new angle is drawn.
*
* The arc is internally described by :
* <DL>
* <DT>*</DT><DD>(<B>w_current->first_wx</B>,<B>w_current->first_wy</B>) as
* its center.
* <DT>*</DT><DD><B>w_current->distance</B> as its radius.
* <DT>*</DT><DD><B>w_current->second_wx</B> and <B>w_current->second_wx</B> as its
* start and end angle respectively.
* </DL>
*
* \param [in] w_current The GschemToplevel 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.
* \param [in] whichone Which angle to change.
*
* <B>whichone</B> can have one of the following values:
* <DL>
* <DT>ARC_RADIUS</DT>
* <DD>at the center of the arc. This grip is used to modify
* the radius of the arc.
* <DT>ARC_START_ANGLE</DT>
* <DD>at one end of the arc. It corresponds to the starting
* angle of the arc.
* <DT>ARC_SWEEP_ANGLE</DT>
* <DD>at the other end of the arc. It corresponds to the
* ending angle of the arc.
* </DL>
*/
void o_arc_motion (GschemToplevel *w_current, int w_x, int w_y, int whichone)
{
int diff_x, diff_y, angle_deg;
g_assert (w_current->inside_action != 0);
/* erase the previous temporary arc */
if (w_current->rubber_visible)
o_arc_invalidate_rubber (w_current);
if(whichone == ARC_RADIUS) {
/*
* The radius is taken as the biggest distance on the x and y
* axis between the center of the arc and the mouse position.
*/
diff_x = abs(w_current->first_wx - snap_grid (w_current, w_x));
diff_y = abs(w_current->first_wy - snap_grid (w_current, w_y));
w_current->distance = MAX(diff_x, diff_y);
}
else if((whichone == ARC_START_ANGLE) || (whichone == ARC_SWEEP_ANGLE)) {
/* compute the angle */
diff_x = w_x - w_current->first_wx;
diff_y = w_y - w_current->first_wy;
angle_deg = atan2 (diff_y, diff_x) * 180 / M_PI;
/* set the start or end angle with this angle */
switch(whichone) {
case ARC_START_ANGLE:
w_current->second_wx = (angle_deg + 360) % 360;
break;
case ARC_SWEEP_ANGLE:
w_current->second_wy = (((angle_deg + 360) % 360) -
w_current->second_wx + 360) % 360;
if (w_current->which_object->arc->sweep_angle < 0)
w_current->second_wy = w_current->second_wy - 360;
if (w_current->second_wy == 0)
w_current->second_wy = 360;
break;
/*
* No default required - one of above two branches
* *must* be taken - Coverity ID 201571
*/
}
}
/* draw the new temporary arc */
o_arc_invalidate_rubber (w_current);
w_current->rubber_visible = 1;
}
/*! \brief Start process to input a new arc.
* \par Function Description
* This function starts the process to input a new arc. Parameters for
* this arc are put into/extracted from the <B>w_current</B> toplevel structure.
* <B>w_x</B> and <B>w_y</B> are current coordinates of the pointer in screen unit.
*
* First step of the arc input is to set the radius of the arc. The center
* of the arc is kept in (<B>w_current->first_wx</B>,<B>w_current->first_wy</B>).
* The radius of the arc is in <B>w_current->distance</B>.
*
* \param [in] w_current The GschemToplevel 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_arc_start(GschemToplevel *w_current, int w_x, int w_y)
{
i_action_start (w_current);
/* set the center of the arc */
w_current->first_wx = w_x;
w_current->first_wy = w_y;
/* set the radius */
w_current->distance = 0;
/* set the start and end angles */
w_current->second_wx = w_current->second_wy = 0;
/* start the rubberbanding process of the radius */
o_arc_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);
}