C++ RNA_float_set函数代码示例

/* set the operator properties from the initial event */
static void graphview_cursor_setprops(bContext *C, wmOperator *op, const wmEvent *event)
{
	Scene *scene = CTX_data_scene(C);
	ARegion *ar = CTX_wm_region(C);
	float viewx, viewy;
	int frame;
	
	/* abort if not active region (should not really be possible) */
	if (ar == NULL)
		return;
	
	/* convert from region coordinates to View2D 'tot' space */
	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &viewx, &viewy);
	
	/* frame is rounded to the nearest int, since frames are ints */
	frame = iroundf(viewx);
	
	if (scene->r.flag & SCER_LOCK_FRAME_SELECTION) {
		CLAMP(frame, PSFRA, PEFRA);
	}
	
	/* store the values in the operator properties */
	RNA_int_set(op->ptr, "frame", frame);
	RNA_float_set(op->ptr, "value", viewy);
}

/* set the operator properties from the initial event */
static void graphview_cursor_setprops(bContext *C, wmOperator *op, const wmEvent *event)
{
	ARegion *ar = CTX_wm_region(C);
	float viewx, viewy;
	
	/* abort if not active region (should not really be possible) */
	if (ar == NULL)
		return;
	
	/* convert from region coordinates to View2D 'tot' space */
	UI_view2d_region_to_view(&ar->v2d, event->mval[0], event->mval[1], &viewx, &viewy);
	
	/* store the values in the operator properties */
	/* NOTE: we don't clamp frame here, as it might be used for the drivers cursor */
	RNA_float_set(op->ptr, "frame", viewx);
	RNA_float_set(op->ptr, "value", viewy);
}

static int apply_solution_scale_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
  SpaceClip *sc = CTX_wm_space_clip(C);
  MovieClip *clip = ED_space_clip_get_clip(sc);
  if (!RNA_struct_property_is_set(op->ptr, "distance")) {
    RNA_float_set(op->ptr, "distance", clip->tracking.settings.dist);
  }
  return apply_solution_scale_exec(C, op);
}

static void curve_draw_stroke_to_operator_elem(
        wmOperator *op, const struct StrokeElem *selem)
{
	PointerRNA itemptr;
	RNA_collection_add(op->ptr, "stroke", &itemptr);

	RNA_float_set_array(&itemptr, "mouse", selem->mval);
	RNA_float_set_array(&itemptr, "location", selem->location_world);
	RNA_float_set(&itemptr, "pressure", selem->pressure);
}

static int stretchto_reset_exec (bContext *C, wmOperator *op)
{
	PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_StretchToConstraint);
	
	/* just set original length to 0.0, which will cause a reset on next recalc */
	RNA_float_set(&ptr, "original_length", 0.0f);
	
	WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, NULL);
	return OPERATOR_FINISHED;
}

static int limitdistance_reset_exec (bContext *C, wmOperator *op)
{
	PointerRNA ptr= CTX_data_pointer_get_type(C, "constraint", &RNA_LimitDistanceConstraint);
	
	/* just set distance to 0.0, which will cause a reset on next recalc */
	RNA_float_set(&ptr, "distance", 0.0f);
	
	WM_event_add_notifier(C, NC_OBJECT|ND_CONSTRAINT, NULL);
	return OPERATOR_FINISHED;
}

/* Modal Operator init */
static int change_frame_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
  /* Change to frame that mouse is over before adding modal handler,
   * as user could click on a single frame (jump to frame) as well as
   * click-dragging over a range (modal scrubbing).
   */
  RNA_float_set(op->ptr, "frame", frame_from_event(C, event));

  change_frame_seq_preview_begin(C, event);

  change_frame_apply(C, op);

  /* add temp handler */
  WM_event_add_modal_handler(C, op);

  return OPERATOR_RUNNING_MODAL;
}

static int view_zoom_invoke(bContext *C, wmOperator *op, wmEvent *event)
{
    if (event->type == MOUSEZOOM) {
        float factor;

        factor = 1.0f + (event->x - event->prevx + event->y - event->prevy) / 300.0f;
        RNA_float_set(op->ptr, "factor", factor);

        sclip_zoom_set_factor_exec(C, event, factor);

        return OPERATOR_FINISHED;
    }
    else {
        view_zoom_init(C, op, event);

        return OPERATOR_RUNNING_MODAL;
    }
}

static void view_zoom_apply(bContext *C,
                            ViewZoomData *vpd,
                            wmOperator *op,
                            const wmEvent *event)
{
	float factor;

	if (U.viewzoom == USER_ZOOM_CONT) {
		SpaceClip *sclip = CTX_wm_space_clip(C);
		double time = PIL_check_seconds_timer();
		float time_step = (float)(time - vpd->timer_lastdraw);
		float fac;
		float zfac;

		if (U.uiflag & USER_ZOOM_HORIZ) {
			fac = (float)(event->x - vpd->x);
		}
		else {
			fac = (float)(event->y - vpd->y);
		}

		if (U.uiflag & USER_ZOOM_INVERT) {
			fac = -fac;
		}

		zfac = 1.0f + ((fac / 20.0f) * time_step);
		vpd->timer_lastdraw = time;
		factor = (sclip->zoom * zfac) / vpd->zoom;
	}
	else {
		float delta = event->x - vpd->x + event->y - vpd->y;

		if (U.uiflag & USER_ZOOM_INVERT) {
			delta *= -1;
		}

		factor = 1.0f + delta / 300.0f;
	}

	RNA_float_set(op->ptr, "factor", factor);
	sclip_zoom_set(C, vpd->zoom * factor, vpd->location);
	ED_region_tag_redraw(CTX_wm_region(C));
}

static void edbm_bevel_numinput_set_value(wmOperator *op)
{
	BevelData *opdata = op->customdata;
	float value;
	int vmode;

	vmode = opdata->value_mode;
	value = (vmode == SEGMENTS_VALUE) ?
		opdata->segments : RNA_float_get(op->ptr, value_rna_name[vmode]);
	applyNumInput(&opdata->num_input[vmode], &value);
	CLAMP(value, value_clamp_min[vmode], value_clamp_max[vmode]);
	if (vmode == SEGMENTS_VALUE) {
		opdata->segments = value;
		RNA_int_set(op->ptr, "segments", (int)value);
	}
	else {
		RNA_float_set(op->ptr, value_rna_name[vmode], value);
	}
}

/* Modal event handling of frame changing */
static int change_frame_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
	int ret = OPERATOR_RUNNING_MODAL;
	/* execute the events */
	switch (event->type) {
		case ESCKEY:
			ret = OPERATOR_FINISHED;
			break;

		case MOUSEMOVE:
			RNA_float_set(op->ptr, "frame", frame_from_event(C, event));
			change_frame_apply(C, op);
			break;

		case LEFTMOUSE:
		case RIGHTMOUSE:
		case MIDDLEMOUSE:
			/* we check for either mouse-button to end, as checking for ACTIONMOUSE (which is used to init
			 * the modal op) doesn't work for some reason
			 */
			if (event->val == KM_RELEASE)
				ret = OPERATOR_FINISHED;
			break;

		case LEFTCTRLKEY:
		case RIGHTCTRLKEY:
			if (event->val == KM_RELEASE) {
				RNA_boolean_set(op->ptr, "snap", false);
			}
			else if (event->val == KM_PRESS) {
				RNA_boolean_set(op->ptr, "snap", true);
			}
			break;
	}

	if (ret != OPERATOR_RUNNING_MODAL) {
		change_frame_seq_preview_end(C);
	}

	return ret;
}

static void edbm_bevel_mouse_set_value(wmOperator *op, const wmEvent *event)
{
  BevelData *opdata = op->customdata;
  int vmode = opdata->value_mode;
  float mdiff[2];
  float value;

  mdiff[0] = opdata->mcenter[0] - event->mval[0];
  mdiff[1] = opdata->mcenter[1] - event->mval[1];

  value = ((len_v2(mdiff) - MVAL_PIXEL_MARGIN) - opdata->initial_length[vmode]);

  /* Scale according to value mode */
  value = value_start[vmode] + value * opdata->scale[vmode];

  /* Fake shift-transform... */
  if (event->shift) {
    if (opdata->shift_value[vmode] < 0.0f) {
      opdata->shift_value[vmode] = (vmode == SEGMENTS_VALUE) ?
                                       opdata->segments :
                                       RNA_float_get(op->ptr, value_rna_name[vmode]);
    }
    value = (value - opdata->shift_value[vmode]) * 0.1f + opdata->shift_value[vmode];
  }
  else if (opdata->shift_value[vmode] >= 0.0f) {
    opdata->shift_value[vmode] = -1.0f;
  }

  /* clamp accordingto value mode, and store value back */
  CLAMP(value, value_clamp_min[vmode], value_clamp_max[vmode]);
  if (vmode == SEGMENTS_VALUE) {
    opdata->segments = value;
    RNA_int_set(op->ptr, "segments", (int)(value + 0.5f));
  }
  else {
    RNA_float_set(op->ptr, value_rna_name[vmode], value);
  }
}

void node_keymap(struct wmKeyConfig *keyconf)
{
	wmKeyMap *keymap;
	wmKeyMapItem *kmi;
	
	/* Entire Editor only ----------------- */
	keymap = WM_keymap_find(keyconf, "Node Generic", SPACE_NODE, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_properties", NKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_toolbar", TKEY, KM_PRESS, 0, 0);
	
	/* Main Area only ----------------- */
	keymap = WM_keymap_find(keyconf, "Node Editor", SPACE_NODE, 0);
	
	/* mouse select in nodes used to be both keys, but perhaps this should be reduced? 
	 * NOTE: mouse-clicks on left-mouse will fall through to allow transform-tweak, but also link/resize
	 * NOTE 2: socket select is part of the node select operator, to handle overlapping cases
	 * NOTE 3: select op is registered for various combinations of modifier key, so the specialized
	 *         grab operators (unlink, attach, etc.) can work easily on single nodes.
	 */
	node_select_keymap(keymap, FALSE);
	node_select_keymap(keymap, TRUE);
	
	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_border", EVT_TWEAK_S, KM_ANY, 0, 0);
	RNA_boolean_set(kmi->ptr, "tweak", TRUE);
	
	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_lasso", EVT_TWEAK_A, KM_ANY, KM_CTRL | KM_ALT, 0);
	RNA_boolean_set(kmi->ptr, "deselect", FALSE);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_lasso", EVT_TWEAK_A, KM_ANY, KM_CTRL | KM_SHIFT | KM_ALT, 0);
	RNA_boolean_set(kmi->ptr, "deselect", TRUE);

	WM_keymap_add_item(keymap, "NODE_OT_select_circle", CKEY, KM_PRESS, 0, 0);

	/* each of these falls through if not handled... */
	kmi = WM_keymap_add_item(keymap, "NODE_OT_link", LEFTMOUSE, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "detach", FALSE);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_link", LEFTMOUSE, KM_PRESS, KM_CTRL, 0);
	RNA_boolean_set(kmi->ptr, "detach", TRUE);
	
	WM_keymap_add_item(keymap, "NODE_OT_resize", LEFTMOUSE, KM_PRESS, 0, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_add_reroute", LEFTMOUSE, KM_PRESS, KM_SHIFT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_links_cut", LEFTMOUSE, KM_PRESS, KM_CTRL, 0);
	WM_keymap_add_item(keymap, "NODE_OT_select_link_viewer", LEFTMOUSE, KM_PRESS, KM_SHIFT | KM_CTRL, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_backimage_move", MIDDLEMOUSE, KM_PRESS, KM_ALT, 0);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_backimage_zoom", VKEY, KM_PRESS, 0, 0);
	RNA_float_set(kmi->ptr, "factor", 0.83333f);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_backimage_zoom", VKEY, KM_PRESS, KM_ALT, 0);
	RNA_float_set(kmi->ptr, "factor", 1.2f);
	WM_keymap_add_item(keymap, "NODE_OT_backimage_fit", HOMEKEY, KM_PRESS, KM_ALT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_backimage_sample", ACTIONMOUSE, KM_PRESS, KM_ALT, 0);

	kmi = WM_keymap_add_item(keymap, "NODE_OT_link_make", FKEY, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "replace", FALSE);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_link_make", FKEY, KM_PRESS, KM_SHIFT, 0);
	RNA_boolean_set(kmi->ptr, "replace", TRUE);

	WM_keymap_add_menu(keymap, "NODE_MT_add", AKEY, KM_PRESS, KM_SHIFT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_duplicate_move", DKEY, KM_PRESS, KM_SHIFT, 0);
	/* modified operator call for duplicating with input links */
	WM_keymap_add_item(keymap, "NODE_OT_duplicate_move_keep_inputs", DKEY, KM_PRESS, KM_SHIFT | KM_CTRL, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_parent_set", PKEY, KM_PRESS, KM_CTRL, 0);
	WM_keymap_add_item(keymap, "NODE_OT_parent_clear", PKEY, KM_PRESS, KM_ALT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_join", JKEY, KM_PRESS, KM_CTRL, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_hide_toggle", HKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_mute_toggle", MKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_preview_toggle", HKEY, KM_PRESS, KM_SHIFT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_hide_socket_toggle", HKEY, KM_PRESS, KM_CTRL, 0);
	
	WM_keymap_add_item(keymap, "NODE_OT_view_all", HOMEKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_view_all", NDOF_BUTTON_FIT, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_view_selected", PADPERIOD, KM_PRESS, 0, 0);

	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_border", BKEY, KM_PRESS, 0, 0);
	RNA_boolean_set(kmi->ptr, "tweak", FALSE);

	WM_keymap_add_item(keymap, "NODE_OT_delete", XKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_delete", DELKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_delete_reconnect", XKEY, KM_PRESS, KM_CTRL, 0);

	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_all", AKEY, KM_PRESS, 0, 0);
	RNA_enum_set(kmi->ptr, "action", SEL_TOGGLE);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_all", IKEY, KM_PRESS, KM_CTRL, 0);
	RNA_enum_set(kmi->ptr, "action", SEL_INVERT);

	WM_keymap_add_item(keymap, "NODE_OT_select_linked_to", LKEY, KM_PRESS, KM_SHIFT, 0);
	WM_keymap_add_item(keymap, "NODE_OT_select_linked_from", LKEY, KM_PRESS, 0, 0);
	WM_keymap_add_item(keymap, "NODE_OT_select_same_type", GKEY, KM_PRESS, KM_SHIFT, 0);

	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_same_type_step", RIGHTBRACKETKEY, KM_PRESS, KM_SHIFT, 0);
	RNA_boolean_set(kmi->ptr, "prev", FALSE);
	kmi = WM_keymap_add_item(keymap, "NODE_OT_select_same_type_step", LEFTBRACKETKEY, KM_PRESS, KM_SHIFT, 0);
	RNA_boolean_set(kmi->ptr, "prev", TRUE);
	
	WM_keymap_add_item(keymap, "NODE_OT_find_node", FKEY, KM_PRESS, KM_CTRL, 0);
	
	/* node group operators */
//.........这里部分代码省略.........

/* common code for modal() */
static int pose_slide_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
	tPoseSlideOp *pso = op->customdata;
	wmWindow *win = CTX_wm_window(C);
	const bool has_numinput = hasNumInput(&pso->num);
	
	switch (event->type) {
		case LEFTMOUSE: /* confirm */
		case RETKEY:
		case PADENTER:
		{
			/* return to normal cursor and header status */
			ED_area_headerprint(pso->sa, NULL);
			WM_cursor_modal_restore(win);
			
			/* insert keyframes as required... */
			pose_slide_autoKeyframe(C, pso);
			pose_slide_exit(op);
			
			/* done! */
			return OPERATOR_FINISHED;
		}
		
		case ESCKEY:    /* cancel */
		case RIGHTMOUSE: 
		{
			/* return to normal cursor and header status */
			ED_area_headerprint(pso->sa, NULL);
			WM_cursor_modal_restore(win);
			
			/* reset transforms back to original state */
			pose_slide_reset(pso);
			
			/* depsgraph updates + redraws */
			pose_slide_refresh(C, pso);
			
			/* clean up temp data */
			pose_slide_exit(op);
			
			/* canceled! */
			return OPERATOR_CANCELLED;
		}
			
		case MOUSEMOVE: /* calculate new position */
		{
			/* only handle mousemove if not doing numinput */
			if (has_numinput == false) {
				/* update percentage based on position of mouse */
				pose_slide_mouse_update_percentage(pso, op, event);
				
				/* update percentage indicator in header */
				pose_slide_draw_status(pso);
				
				/* reset transforms (to avoid accumulation errors) */
				pose_slide_reset(pso);
				
				/* apply... */
				pose_slide_apply(C, pso);
			}
			break;
		}
		default:
			if ((event->val == KM_PRESS) && handleNumInput(C, &pso->num, event)) {
				float value;
				
				/* Grab percentage from numeric input, and store this new value for redo  
				 * NOTE: users see ints, while internally we use a 0-1 float
				 */
				value = pso->percentage * 100.0f;
				applyNumInput(&pso->num, &value);
				
				pso->percentage = value / 100.0f;
				CLAMP(pso->percentage, 0.0f, 1.0f);
				RNA_float_set(op->ptr, "percentage", pso->percentage);
				
				/* update percentage indicator in header */
				pose_slide_draw_status(pso);
				
				/* reset transforms (to avoid accumulation errors) */
				pose_slide_reset(pso);
				
				/* apply... */
				pose_slide_apply(C, pso);
				break;
			}
			else {
				/* unhandled event - maybe it was some view manip? */
				/* allow to pass through */
				return OPERATOR_RUNNING_MODAL | OPERATOR_PASS_THROUGH;
			}
	}
	
	/* still running... */
	return OPERATOR_RUNNING_MODAL;
}

/* common code for modal() */
static int pose_slide_modal(bContext *C, wmOperator *op, const wmEvent *event)
{
	tPoseSlideOp *pso = op->customdata;
	wmWindow *win = CTX_wm_window(C);
	
	switch (event->type) {
		case LEFTMOUSE: /* confirm */
		case RETKEY:
		{
			/* return to normal cursor and header status */
			ED_area_headerprint(pso->sa, NULL);
			WM_cursor_modal_restore(win);
			
			/* insert keyframes as required... */
			pose_slide_autoKeyframe(C, pso);
			pose_slide_exit(op);
			
			/* done! */
			return OPERATOR_FINISHED;
		}
		
		case ESCKEY:    /* cancel */
		case RIGHTMOUSE: 
		{
			/* return to normal cursor and header status */
			ED_area_headerprint(pso->sa, NULL);
			WM_cursor_modal_restore(win);
			
			/* reset transforms back to original state */
			pose_slide_reset(pso);
			
			/* depsgraph updates + redraws */
			pose_slide_refresh(C, pso);
			
			/* clean up temp data */
			pose_slide_exit(op);
			
			/* canceled! */
			return OPERATOR_CANCELLED;
		}
			
		case MOUSEMOVE: /* calculate new position */
		{
			/* calculate percentage based on position of mouse (we only use x-axis for now.
			 * since this is more convenient for users to do), and store new percentage value
			 */
			pso->percentage = (event->x - pso->ar->winrct.xmin) / ((float)pso->ar->winx);
			RNA_float_set(op->ptr, "percentage", pso->percentage);
			
			/* update percentage indicator in header */
			pose_slide_draw_status(pso);
			
			/* reset transforms (to avoid accumulation errors) */
			pose_slide_reset(pso);
			
			/* apply... */
			pose_slide_apply(C, pso);
			break;
		}
		default: /* unhandled event (maybe it was some view manip? */
			/* allow to pass through */
			return OPERATOR_RUNNING_MODAL | OPERATOR_PASS_THROUGH;
	}
	
	/* still running... */
	return OPERATOR_RUNNING_MODAL;
}