initial commit, 4.5 stable

editor/scene/2d/tiles/tile_atlas_view.h

@@ -0,0 +1,171 @@
+/**************************************************************************/
+/*  tile_atlas_view.h                                                     */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "editor/gui/editor_zoom_widget.h"
+#include "scene/gui/box_container.h"
+#include "scene/gui/button.h"
+#include "scene/gui/center_container.h"
+#include "scene/gui/label.h"
+#include "scene/gui/margin_container.h"
+#include "scene/resources/2d/tile_set.h"
+
+class ViewPanner;
+
+class TileAtlasView : public Control {
+	GDCLASS(TileAtlasView, Control);
+
+private:
+	Ref<TileSet> tile_set;
+	Ref<TileSetAtlasSource> tile_set_atlas_source;
+	int source_id = TileSet::INVALID_SOURCE;
+
+	enum DragType {
+		DRAG_TYPE_NONE,
+		DRAG_TYPE_PAN,
+	};
+	DragType drag_type = DRAG_TYPE_NONE;
+	float previous_zoom = 1.0;
+	EditorZoomWidget *zoom_widget = nullptr;
+	Button *button_center_view = nullptr;
+	CenterContainer *center_container = nullptr;
+	Vector2 panning;
+	void _update_zoom_and_panning(bool p_zoom_on_mouse_pos = false, const Vector2 &p_mouse_pos = Vector2());
+	void _zoom_widget_changed();
+	void _center_view();
+	virtual void gui_input(const Ref<InputEvent> &p_event) override;
+
+	Ref<ViewPanner> panner;
+	void _pan_callback(Vector2 p_scroll_vec, Ref<InputEvent> p_event);
+	void _zoom_callback(float p_zoom_factor, Vector2 p_origin, Ref<InputEvent> p_event);
+
+	HashMap<Vector2, HashMap<int, Rect2i>> alternative_tiles_rect_cache;
+	void _update_alternative_tiles_rect_cache();
+
+	MarginContainer *margin_container = nullptr;
+	int margin_container_paddings[4] = { 0, 0, 0, 0 };
+	HBoxContainer *hbox = nullptr;
+	Label *missing_source_label = nullptr;
+
+	// Background
+	Control *background_left = nullptr;
+	void _draw_background_left();
+	Control *background_right = nullptr;
+	void _draw_background_right();
+
+	// Left side.
+	Control *base_tiles_root_control = nullptr;
+	void _base_tiles_root_control_gui_input(const Ref<InputEvent> &p_event);
+
+	Control *base_tiles_drawing_root = nullptr;
+
+	Control *base_tiles_draw = nullptr;
+	HashMap<Ref<Material>, RID> material_tiles_draw;
+	HashMap<Ref<Material>, RID> material_alternatives_draw;
+	void _draw_base_tiles();
+	RID _get_canvas_item_to_draw(const TileData *p_for_data, const CanvasItem *p_base_item, HashMap<Ref<Material>, RID> &p_material_map);
+	void _clear_material_canvas_items();
+
+	Control *base_tiles_texture_grid = nullptr;
+	void _draw_base_tiles_texture_grid();
+
+	Control *base_tiles_shape_grid = nullptr;
+	void _draw_base_tiles_shape_grid();
+
+	Size2i _compute_base_tiles_control_size();
+
+	// Right side.
+	Control *alternative_tiles_root_control = nullptr;
+	void _alternative_tiles_root_control_gui_input(const Ref<InputEvent> &p_event);
+
+	Control *alternative_tiles_drawing_root = nullptr;
+
+	Control *alternatives_draw = nullptr;
+	void _draw_alternatives();
+
+	Size2i _compute_alternative_tiles_control_size();
+
+	struct ThemeCache {
+		Ref<Texture2D> center_view_icon;
+		Ref<Texture2D> checkerboard;
+	} theme_cache;
+
+protected:
+	virtual void _update_theme_item_cache() override;
+
+	void _notification(int p_what);
+	static void _bind_methods();
+
+public:
+	// Global.
+	void set_atlas_source(TileSet *p_tile_set, TileSetAtlasSource *p_tile_set_atlas_source, int p_source_id);
+
+	float get_zoom() const;
+	void set_transform(float p_zoom, Vector2i p_panning);
+
+	void set_padding(Side p_side, int p_padding);
+
+	// Left side.
+	void set_texture_grid_visible(bool p_visible) { base_tiles_texture_grid->set_visible(p_visible); }
+	void set_tile_shape_grid_visible(bool p_visible) { base_tiles_shape_grid->set_visible(p_visible); }
+
+	Vector2i get_atlas_tile_coords_at_pos(const Vector2 p_pos, bool p_clamp = false) const;
+
+	void add_control_over_atlas_tiles(Control *p_control, bool scaled = true) {
+		if (scaled) {
+			base_tiles_drawing_root->add_child(p_control);
+		} else {
+			base_tiles_root_control->add_child(p_control);
+		}
+		p_control->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+		p_control->set_mouse_filter(Control::MOUSE_FILTER_PASS);
+	}
+
+	// Right side.
+	Vector3i get_alternative_tile_at_pos(const Vector2 p_pos) const;
+	Rect2i get_alternative_tile_rect(const Vector2i p_coords, int p_alternative_tile);
+
+	void add_control_over_alternative_tiles(Control *p_control, bool scaled = true) {
+		if (scaled) {
+			alternative_tiles_drawing_root->add_child(p_control);
+		} else {
+			alternative_tiles_root_control->add_child(p_control);
+		}
+		p_control->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+		p_control->set_mouse_filter(Control::MOUSE_FILTER_PASS);
+	}
+
+	// Redraw everything.
+	void queue_redraw();
+
+	TileAtlasView();
+	~TileAtlasView();
+};