godot/scene/gui/nine_patch_rect.cpp

/*************************************************************************/
/*  nine_patch_rect.cpp                                                  */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "nine_patch_rect.h"

#include "servers/rendering_server.h"

void NinePatchRect::_notification(int p_what) {
	if (p_what == NOTIFICATION_DRAW) {
		if (texture.is_null()) {
			return;
		}

		Rect2 rect = Rect2(Point2(), get_size());
		Rect2 src_rect = region_rect;

		texture->get_rect_region(rect, src_rect, rect, src_rect);

		RID ci = get_canvas_item();
		RS::get_singleton()->canvas_item_add_nine_patch(ci, rect, src_rect, texture->get_rid(), Vector2(margin[SIDE_LEFT], margin[SIDE_TOP]), Vector2(margin[SIDE_RIGHT], margin[SIDE_BOTTOM]), RS::NinePatchAxisMode(axis_h), RS::NinePatchAxisMode(axis_v), draw_center);
	}
}

Size2 NinePatchRect::get_minimum_size() const {
	return Size2(margin[SIDE_LEFT] + margin[SIDE_RIGHT], margin[SIDE_TOP] + margin[SIDE_BOTTOM]);
}

void NinePatchRect::_bind_methods() {
	ClassDB::bind_method(D_METHOD("set_texture", "texture"), &NinePatchRect::set_texture);
	ClassDB::bind_method(D_METHOD("get_texture"), &NinePatchRect::get_texture);
	ClassDB::bind_method(D_METHOD("set_patch_margin", "margin", "value"), &NinePatchRect::set_patch_margin);
	ClassDB::bind_method(D_METHOD("get_patch_margin", "margin"), &NinePatchRect::get_patch_margin);
	ClassDB::bind_method(D_METHOD("set_region_rect", "rect"), &NinePatchRect::set_region_rect);
	ClassDB::bind_method(D_METHOD("get_region_rect"), &NinePatchRect::get_region_rect);
	ClassDB::bind_method(D_METHOD("set_draw_center", "draw_center"), &NinePatchRect::set_draw_center);
	ClassDB::bind_method(D_METHOD("is_draw_center_enabled"), &NinePatchRect::is_draw_center_enabled);
	ClassDB::bind_method(D_METHOD("set_h_axis_stretch_mode", "mode"), &NinePatchRect::set_h_axis_stretch_mode);
	ClassDB::bind_method(D_METHOD("get_h_axis_stretch_mode"), &NinePatchRect::get_h_axis_stretch_mode);
	ClassDB::bind_method(D_METHOD("set_v_axis_stretch_mode", "mode"), &NinePatchRect::set_v_axis_stretch_mode);
	ClassDB::bind_method(D_METHOD("get_v_axis_stretch_mode"), &NinePatchRect::get_v_axis_stretch_mode);

	ADD_SIGNAL(MethodInfo("texture_changed"));

	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D"), "set_texture", "get_texture");
	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draw_center"), "set_draw_center", "is_draw_center_enabled");
	ADD_PROPERTY(PropertyInfo(Variant::RECT2, "region_rect"), "set_region_rect", "get_region_rect");

	ADD_GROUP("Patch Margin", "patch_margin_");
	ADD_PROPERTYI(PropertyInfo(Variant::INT, "patch_margin_left", PROPERTY_HINT_RANGE, "0,16384,1"), "set_patch_margin", "get_patch_margin", SIDE_LEFT);
	ADD_PROPERTYI(PropertyInfo(Variant::INT, "patch_margin_top", PROPERTY_HINT_RANGE, "0,16384,1"), "set_patch_margin", "get_patch_margin", SIDE_TOP);
	ADD_PROPERTYI(PropertyInfo(Variant::INT, "patch_margin_right", PROPERTY_HINT_RANGE, "0,16384,1"), "set_patch_margin", "get_patch_margin", SIDE_RIGHT);
	ADD_PROPERTYI(PropertyInfo(Variant::INT, "patch_margin_bottom", PROPERTY_HINT_RANGE, "0,16384,1"), "set_patch_margin", "get_patch_margin", SIDE_BOTTOM);
	ADD_GROUP("Axis Stretch", "axis_stretch_");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "axis_stretch_horizontal", PROPERTY_HINT_ENUM, "Stretch,Tile,Tile Fit"), "set_h_axis_stretch_mode", "get_h_axis_stretch_mode");
	ADD_PROPERTY(PropertyInfo(Variant::INT, "axis_stretch_vertical", PROPERTY_HINT_ENUM, "Stretch,Tile,Tile Fit"), "set_v_axis_stretch_mode", "get_v_axis_stretch_mode");

	BIND_ENUM_CONSTANT(AXIS_STRETCH_MODE_STRETCH);
	BIND_ENUM_CONSTANT(AXIS_STRETCH_MODE_TILE);
	BIND_ENUM_CONSTANT(AXIS_STRETCH_MODE_TILE_FIT);
}

void NinePatchRect::set_texture(const Ref<Texture2D> &p_tex) {
	if (texture == p_tex) {
		return;
	}
	texture = p_tex;
	update();
	/*
	if (texture.is_valid())
		texture->set_flags(texture->get_flags()&(~Texture::FLAG_REPEAT)); //remove repeat from texture, it looks bad in sprites
	*/
	minimum_size_changed();
	emit_signal("texture_changed");
	_change_notify("texture");
}

Ref<Texture2D> NinePatchRect::get_texture() const {
	return texture;
}

void NinePatchRect::set_patch_margin(Side p_side, int p_size) {
	ERR_FAIL_INDEX((int)p_side, 4);
	margin[p_side] = p_size;
	update();
	minimum_size_changed();
	switch (p_side) {
		case SIDE_LEFT:
			_change_notify("patch_margin_left");
			break;
		case SIDE_TOP:
			_change_notify("patch_margin_top");
			break;
		case SIDE_RIGHT:
			_change_notify("patch_margin_right");
			break;
		case SIDE_BOTTOM:
			_change_notify("patch_margin_bottom");
			break;
	}
}

int NinePatchRect::get_patch_margin(Side p_side) const {
	ERR_FAIL_INDEX_V((int)p_side, 4, 0);
	return margin[p_side];
}

void NinePatchRect::set_region_rect(const Rect2 &p_region_rect) {
	if (region_rect == p_region_rect) {
		return;
	}

	region_rect = p_region_rect;

	item_rect_changed();
	_change_notify("region_rect");
}

Rect2 NinePatchRect::get_region_rect() const {
	return region_rect;
}

void NinePatchRect::set_draw_center(bool p_enabled) {
	draw_center = p_enabled;
	update();
}

bool NinePatchRect::is_draw_center_enabled() const {
	return draw_center;
}

void NinePatchRect::set_h_axis_stretch_mode(AxisStretchMode p_mode) {
	axis_h = p_mode;
	update();
}

NinePatchRect::AxisStretchMode NinePatchRect::get_h_axis_stretch_mode() const {
	return axis_h;
}

void NinePatchRect::set_v_axis_stretch_mode(AxisStretchMode p_mode) {
	axis_v = p_mode;
	update();
}

NinePatchRect::AxisStretchMode NinePatchRect::get_v_axis_stretch_mode() const {
	return axis_v;
}

NinePatchRect::NinePatchRect() {
	margin[SIDE_LEFT] = 0;
	margin[SIDE_RIGHT] = 0;
	margin[SIDE_BOTTOM] = 0;
	margin[SIDE_TOP] = 0;

	set_mouse_filter(MOUSE_FILTER_IGNORE);
	draw_center = true;

	axis_h = AXIS_STRETCH_MODE_STRETCH;
	axis_v = AXIS_STRETCH_MODE_STRETCH;
}

NinePatchRect::~NinePatchRect() {
}