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/*************************************************************************/
/* canvas_item.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef CANVAS_ITEM_H
#define CANVAS_ITEM_H
#include "scene/main/node.h"
#include "scene/resources/texture.h"
#include "scene/main/scene_main_loop.h"
class CanvasLayer;
class Viewport;
class Font;
class StyleBox;
class CanvasItem : public Node {
OBJ_TYPE( CanvasItem, Node );
public:
enum BlendMode {
BLEND_MODE_MIX, //default
BLEND_MODE_ADD,
BLEND_MODE_SUB,
BLEND_MODE_MUL
};
private:
mutable SelfList<Node> xform_change;
RID canvas_item;
String group;
CanvasLayer *canvas_layer;
float opacity;
float self_opacity;
List<CanvasItem*> children_items;
List<CanvasItem*>::Element *C;
BlendMode blend_mode;
bool first_draw;
bool hidden;
bool pending_update;
bool toplevel;
bool pending_children_sort;
bool drawing;
bool block_transform_notify;
bool behind;
mutable Matrix32 global_transform;
mutable bool global_invalid;
void _raise_self();
void _propagate_visibility_changed(bool p_visible);
void _set_visible_(bool p_visible);
bool _is_visible_() const;
void _update_callback();
void _enter_canvas();
void _exit_canvas();
void _queue_sort_children();
void _sort_children();
void _notify_transform(CanvasItem *p_node);
void _set_on_top(bool p_on_top) { set_draw_behind_parent(!p_on_top); }
bool _is_on_top() const { return !is_draw_behind_parent_enabled(); }
protected:
_FORCE_INLINE_ void _notify_transform() { if (!is_inside_scene()) return; _notify_transform(this); if (!block_transform_notify) notification(NOTIFICATION_LOCAL_TRANSFORM_CHANGED); }
void item_rect_changed();
void _notification(int p_what);
static void _bind_methods();
public:
enum {
NOTIFICATION_TRANSFORM_CHANGED=SceneMainLoop::NOTIFICATION_TRANSFORM_CHANGED, //unique
NOTIFICATION_DRAW=30,
NOTIFICATION_VISIBILITY_CHANGED=31,
NOTIFICATION_ENTER_CANVAS=32,
NOTIFICATION_EXIT_CANVAS=33,
NOTIFICATION_LOCAL_TRANSFORM_CHANGED=35,
NOTIFICATION_WORLD_2D_CHANGED=36,
};
/* EDITOR */
virtual Variant edit_get_state() const;
virtual void edit_set_state(const Variant& p_state);
virtual void edit_set_rect(const Rect2& p_edit_rect);
virtual void edit_rotate(float p_rot);
virtual Size2 edit_get_minimum_size() const;
/* VISIBILITY */
bool is_visible() const;
bool is_hidden() const;
void show();
void hide();
void update();
void set_blend_mode(BlendMode p_blend_mode);
BlendMode get_blend_mode() const;
void set_opacity(float p_opacity);
float get_opacity() const;
void set_self_opacity(float p_self_opacity);
float get_self_opacity() const;
/* DRAWING API */
void draw_line(const Point2& p_from, const Point2& p_to,const Color& p_color,float p_width=1.0);
void draw_rect(const Rect2& p_rect, const Color& p_color);
void draw_circle(const Point2& p_pos, float p_radius, const Color& p_color);
void draw_texture(const Ref<Texture>& p_texture,const Point2& p_pos);
void draw_texture_rect(const Ref<Texture>& p_texture, const Rect2& p_rect, bool p_tile=false,const Color& p_modulate=Color(1,1,1));
void draw_texture_rect_region(const Ref<Texture>& p_texture,const Rect2& p_rect, const Rect2& p_src_rect,const Color& p_modulate=Color(1,1,1));
void draw_style_box(const Ref<StyleBox>& p_style_box,const Rect2& p_rect);
void draw_primitive(const Vector<Point2>& p_points, const Vector<Color>& p_colors,const Vector<Point2>& p_uvs, Ref<Texture> p_texture=Ref<Texture>(),float p_width=1);
void draw_polygon(const Vector<Point2>& p_points, const Vector<Color>& p_colors,const Vector<Point2>& p_uvs=Vector<Point2>(), Ref<Texture> p_texture=Ref<Texture>());
void draw_colored_polygon(const Vector<Point2>& p_points, const Color& p_color,const Vector<Point2>& p_uvs=Vector<Point2>(), Ref<Texture> p_texture=Ref<Texture>());
void draw_string(const Ref<Font>& p_font, const Point2& p_pos, const String& p_text,const Color& p_modulate=Color(1,1,1),int p_clip_w=-1);
float draw_char(const Ref<Font>& p_font,const Point2& p_pos, const String& p_char,const String& p_next="",const Color& p_modulate=Color(1,1,1));
void draw_set_transform(const Point2& p_offset, float p_rot, const Size2& p_scale);
/* RECT / TRANSFORM */
void set_as_toplevel(bool p_toplevel);
bool is_set_as_toplevel() const;
void set_draw_behind_parent(bool p_enable);
bool is_draw_behind_parent_enabled() const;
CanvasItem *get_parent_item() const;
virtual Rect2 get_item_rect() const=0;
virtual Matrix32 get_transform() const=0;
virtual Matrix32 get_global_transform() const;
virtual Matrix32 get_global_transform_with_canvas() const;
CanvasItem *get_toplevel() const;
_FORCE_INLINE_ RID get_canvas_item() const { return canvas_item; }
void set_block_transform_notify(bool p_enable);
bool is_block_transform_notify_enabled() const;
Matrix32 get_canvas_transform() const;
Matrix32 get_viewport_transform() const;
Rect2 get_viewport_rect() const;
RID get_viewport_rid() const;
RID get_canvas() const;
Ref<World2D> get_world_2d() const;
CanvasItem();
~CanvasItem();
};
VARIANT_ENUM_CAST( CanvasItem::BlendMode );
#endif // CANVAS_ITEM_H
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