initial commit, 4.5 stable

editor/scene/gui/theme_editor_preview.cpp

@@ -0,0 +1,545 @@
+/**************************************************************************/
+/*  theme_editor_preview.cpp                                              */
+/**************************************************************************/
+/*                         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.                 */
+/**************************************************************************/
+
+#include "theme_editor_preview.h"
+
+#include "core/config/project_settings.h"
+#include "editor/editor_node.h"
+#include "editor/editor_string_names.h"
+#include "editor/themes/editor_scale.h"
+#include "scene/gui/button.h"
+#include "scene/gui/check_box.h"
+#include "scene/gui/check_button.h"
+#include "scene/gui/color_picker.h"
+#include "scene/gui/color_rect.h"
+#include "scene/gui/label.h"
+#include "scene/gui/margin_container.h"
+#include "scene/gui/menu_button.h"
+#include "scene/gui/option_button.h"
+#include "scene/gui/panel.h"
+#include "scene/gui/progress_bar.h"
+#include "scene/gui/scroll_container.h"
+#include "scene/gui/separator.h"
+#include "scene/gui/slider.h"
+#include "scene/gui/spin_box.h"
+#include "scene/gui/tab_container.h"
+#include "scene/gui/text_edit.h"
+#include "scene/gui/tree.h"
+#include "scene/resources/packed_scene.h"
+#include "scene/theme/theme_db.h"
+
+constexpr double REFRESH_TIMER = 1.5;
+
+void ThemeEditorPreview::set_preview_theme(const Ref<Theme> &p_theme) {
+	preview_content->set_theme(p_theme);
+}
+
+void ThemeEditorPreview::add_preview_overlay(Control *p_overlay) {
+	preview_overlay->add_child(p_overlay);
+	p_overlay->hide();
+}
+
+void ThemeEditorPreview::_propagate_redraw(Control *p_at) {
+	p_at->notification(NOTIFICATION_THEME_CHANGED);
+	p_at->update_minimum_size();
+	p_at->queue_redraw();
+	for (int i = 0; i < p_at->get_child_count(); i++) {
+		Control *a = Object::cast_to<Control>(p_at->get_child(i));
+		if (a) {
+			_propagate_redraw(a);
+		}
+	}
+}
+
+void ThemeEditorPreview::_refresh_interval() {
+	// In case the project settings have changed.
+	preview_bg->set_color(GLOBAL_GET("rendering/environment/defaults/default_clear_color"));
+
+	_propagate_redraw(preview_bg);
+	_propagate_redraw(preview_content);
+}
+
+void ThemeEditorPreview::_preview_visibility_changed() {
+	set_process(is_visible_in_tree());
+}
+
+void ThemeEditorPreview::_picker_button_cbk() {
+	picker_overlay->set_visible(picker_button->is_pressed());
+	if (picker_button->is_pressed()) {
+		_reset_picker_overlay();
+	}
+}
+
+Control *ThemeEditorPreview::_find_hovered_control(Control *p_parent, Vector2 p_mouse_position) {
+	Control *found = nullptr;
+
+	for (int i = p_parent->get_child_count() - 1; i >= 0; i--) {
+		Control *cc = Object::cast_to<Control>(p_parent->get_child(i));
+		if (!cc || !cc->is_visible()) {
+			continue;
+		}
+
+		Rect2 crect = cc->get_rect();
+		if (crect.has_point(p_mouse_position)) {
+			// Check if there is a child control under mouse.
+			if (cc->get_child_count() > 0) {
+				found = _find_hovered_control(cc, p_mouse_position - cc->get_position());
+			}
+
+			// If there are no applicable children, use the control itself.
+			if (!found) {
+				found = cc;
+			}
+			break;
+		}
+	}
+
+	return found;
+}
+
+void ThemeEditorPreview::_draw_picker_overlay() {
+	if (!picker_button->is_pressed()) {
+		return;
+	}
+
+	picker_overlay->draw_rect(Rect2(Vector2(0.0, 0.0), picker_overlay->get_size()), theme_cache.preview_picker_overlay_color);
+	if (hovered_control) {
+		Rect2 highlight_rect = hovered_control->get_global_rect();
+		highlight_rect.position = picker_overlay->get_global_transform().affine_inverse().xform(highlight_rect.position);
+		picker_overlay->draw_style_box(theme_cache.preview_picker_overlay, highlight_rect);
+
+		String highlight_name = hovered_control->get_theme_type_variation();
+		if (highlight_name == StringName()) {
+			highlight_name = hovered_control->get_class_name();
+		}
+
+		Rect2 highlight_label_rect = highlight_rect;
+		highlight_label_rect.size = theme_cache.preview_picker_font->get_string_size(highlight_name, HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size);
+
+		int margin_top = theme_cache.preview_picker_label->get_margin(SIDE_TOP);
+		int margin_left = theme_cache.preview_picker_label->get_margin(SIDE_LEFT);
+		int margin_bottom = theme_cache.preview_picker_label->get_margin(SIDE_BOTTOM);
+		int margin_right = theme_cache.preview_picker_label->get_margin(SIDE_RIGHT);
+		highlight_label_rect.size.x += margin_left + margin_right;
+		highlight_label_rect.size.y += margin_top + margin_bottom;
+
+		highlight_label_rect.position = highlight_label_rect.position.clamp(Vector2(), picker_overlay->get_size());
+
+		picker_overlay->draw_style_box(theme_cache.preview_picker_label, highlight_label_rect);
+
+		Point2 label_pos = highlight_label_rect.position;
+		label_pos.y += highlight_label_rect.size.y - margin_bottom;
+		label_pos.x += margin_left;
+		picker_overlay->draw_string(theme_cache.preview_picker_font, label_pos, highlight_name, HORIZONTAL_ALIGNMENT_LEFT, -1, theme_cache.font_size);
+	}
+}
+
+void ThemeEditorPreview::_gui_input_picker_overlay(const Ref<InputEvent> &p_event) {
+	if (!picker_button->is_pressed()) {
+		return;
+	}
+
+	Ref<InputEventMouseButton> mb = p_event;
+
+	if (mb.is_valid() && mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
+		if (hovered_control) {
+			StringName theme_type = hovered_control->get_theme_type_variation();
+			if (theme_type == StringName()) {
+				theme_type = hovered_control->get_class_name();
+			}
+
+			emit_signal(SNAME("control_picked"), theme_type);
+			picker_button->set_pressed(false);
+			picker_overlay->set_visible(false);
+			return;
+		}
+	}
+
+	Ref<InputEventMouseMotion> mm = p_event;
+
+	if (mm.is_valid()) {
+		Vector2 mp = preview_content->get_local_mouse_position();
+		hovered_control = _find_hovered_control(preview_content, mp);
+		picker_overlay->queue_redraw();
+	}
+
+	// Forward input to the scroll container underneath to allow scrolling.
+	preview_container->gui_input(p_event);
+}
+
+void ThemeEditorPreview::_reset_picker_overlay() {
+	hovered_control = nullptr;
+	picker_overlay->queue_redraw();
+}
+
+void ThemeEditorPreview::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_ENTER_TREE: {
+			if (is_visible_in_tree()) {
+				set_process(true);
+			}
+
+			connect(SceneStringName(visibility_changed), callable_mp(this, &ThemeEditorPreview::_preview_visibility_changed));
+		} break;
+
+		case NOTIFICATION_READY: {
+			Vector<Ref<Theme>> preview_themes;
+			preview_themes.push_back(ThemeDB::get_singleton()->get_default_theme());
+			ThemeDB::get_singleton()->create_theme_context(preview_root, preview_themes);
+		} break;
+
+		case NOTIFICATION_THEME_CHANGED: {
+			picker_button->set_button_icon(get_editor_theme_icon(SNAME("ColorPick")));
+
+			theme_cache.preview_picker_overlay = get_theme_stylebox(SNAME("preview_picker_overlay"), SNAME("ThemeEditor"));
+			theme_cache.preview_picker_overlay_color = get_theme_color(SNAME("preview_picker_overlay_color"), SNAME("ThemeEditor"));
+			theme_cache.preview_picker_label = get_theme_stylebox(SNAME("preview_picker_label"), SNAME("ThemeEditor"));
+			theme_cache.preview_picker_font = get_theme_font(SNAME("status_source"), EditorStringName(EditorFonts));
+			theme_cache.font_size = get_theme_default_font_size();
+		} break;
+
+		case NOTIFICATION_PROCESS: {
+			time_left -= get_process_delta_time();
+			if (time_left < 0) {
+				time_left = REFRESH_TIMER;
+				_refresh_interval();
+			}
+		} break;
+	}
+}
+
+void ThemeEditorPreview::_bind_methods() {
+	ADD_SIGNAL(MethodInfo("control_picked", PropertyInfo(Variant::STRING, "class_name")));
+}
+
+ThemeEditorPreview::ThemeEditorPreview() {
+	preview_toolbar = memnew(HBoxContainer);
+	add_child(preview_toolbar);
+
+	picker_button = memnew(Button);
+	preview_toolbar->add_child(picker_button);
+	picker_button->set_theme_type_variation(SceneStringName(FlatButton));
+	picker_button->set_toggle_mode(true);
+	picker_button->set_tooltip_text(TTR("Toggle the control picker, allowing to visually select control types for edit."));
+	picker_button->connect(SceneStringName(pressed), callable_mp(this, &ThemeEditorPreview::_picker_button_cbk));
+
+	MarginContainer *preview_body = memnew(MarginContainer);
+	preview_body->set_custom_minimum_size(Size2(200, 0) * EDSCALE);
+	preview_body->set_v_size_flags(SIZE_EXPAND_FILL);
+	add_child(preview_body);
+
+	preview_container = memnew(ScrollContainer);
+	preview_body->add_child(preview_container);
+
+	preview_root = memnew(MarginContainer);
+	preview_container->add_child(preview_root);
+	preview_root->set_clip_contents(true);
+	preview_root->set_custom_minimum_size(Size2(450, 0) * EDSCALE);
+	preview_root->set_v_size_flags(SIZE_EXPAND_FILL);
+	preview_root->set_h_size_flags(SIZE_EXPAND_FILL);
+
+	preview_bg = memnew(ColorRect);
+	preview_bg->set_anchors_and_offsets_preset(PRESET_FULL_RECT);
+	preview_bg->set_color(GLOBAL_GET("rendering/environment/defaults/default_clear_color"));
+	preview_root->add_child(preview_bg);
+
+	preview_content = memnew(MarginContainer);
+	preview_content->add_theme_constant_override("margin_right", 4 * EDSCALE);
+	preview_content->add_theme_constant_override("margin_top", 4 * EDSCALE);
+	preview_content->add_theme_constant_override("margin_left", 4 * EDSCALE);
+	preview_content->add_theme_constant_override("margin_bottom", 4 * EDSCALE);
+	preview_root->add_child(preview_content);
+
+	preview_overlay = memnew(MarginContainer);
+	preview_overlay->set_mouse_filter(MOUSE_FILTER_IGNORE);
+	preview_overlay->set_clip_contents(true);
+	preview_body->add_child(preview_overlay);
+
+	picker_overlay = memnew(Control);
+	add_preview_overlay(picker_overlay);
+	picker_overlay->connect(SceneStringName(draw), callable_mp(this, &ThemeEditorPreview::_draw_picker_overlay));
+	picker_overlay->connect(SceneStringName(gui_input), callable_mp(this, &ThemeEditorPreview::_gui_input_picker_overlay));
+	picker_overlay->connect(SceneStringName(mouse_exited), callable_mp(this, &ThemeEditorPreview::_reset_picker_overlay));
+}
+
+void DefaultThemeEditorPreview::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_THEME_CHANGED: {
+			test_color_picker_button->set_custom_minimum_size(Size2(0, get_theme_constant(SNAME("color_picker_button_height"), EditorStringName(Editor))));
+		} break;
+	}
+}
+
+DefaultThemeEditorPreview::DefaultThemeEditorPreview() {
+	Panel *main_panel = memnew(Panel);
+	preview_content->add_child(main_panel);
+
+	MarginContainer *main_mc = memnew(MarginContainer);
+	main_mc->add_theme_constant_override("margin_right", 4 * EDSCALE);
+	main_mc->add_theme_constant_override("margin_top", 4 * EDSCALE);
+	main_mc->add_theme_constant_override("margin_left", 4 * EDSCALE);
+	main_mc->add_theme_constant_override("margin_bottom", 4 * EDSCALE);
+	preview_content->add_child(main_mc);
+
+	HBoxContainer *main_hb = memnew(HBoxContainer);
+	main_mc->add_child(main_hb);
+	main_hb->add_theme_constant_override("separation", 20 * EDSCALE);
+
+	VBoxContainer *first_vb = memnew(VBoxContainer);
+	main_hb->add_child(first_vb);
+	first_vb->set_h_size_flags(SIZE_EXPAND_FILL);
+	first_vb->add_theme_constant_override("separation", 10 * EDSCALE);
+
+	first_vb->add_child(memnew(Label("Label")));
+
+	first_vb->add_child(memnew(Button("Button")));
+	Button *bt = memnew(Button);
+	bt->set_text(TTR("Toggle Button"));
+	bt->set_toggle_mode(true);
+	bt->set_pressed(true);
+	first_vb->add_child(bt);
+	bt = memnew(Button);
+	bt->set_text(TTR("Disabled Button"));
+	bt->set_disabled(true);
+	first_vb->add_child(bt);
+	Button *tb = memnew(Button);
+	tb->set_flat(true);
+	tb->set_text("Flat Button");
+	first_vb->add_child(tb);
+
+	CheckButton *cb = memnew(CheckButton);
+	cb->set_text("CheckButton");
+	first_vb->add_child(cb);
+	CheckBox *cbx = memnew(CheckBox);
+	cbx->set_text("CheckBox");
+	first_vb->add_child(cbx);
+
+	MenuButton *test_menu_button = memnew(MenuButton);
+	test_menu_button->set_text("MenuButton");
+	test_menu_button->get_popup()->add_item(TTR("Item"));
+	test_menu_button->get_popup()->add_item(TTR("Disabled Item"));
+	test_menu_button->get_popup()->set_item_disabled(1, true);
+	test_menu_button->get_popup()->add_separator();
+	test_menu_button->get_popup()->add_check_item(TTR("Check Item"));
+	test_menu_button->get_popup()->add_check_item(TTR("Checked Item"));
+	test_menu_button->get_popup()->set_item_checked(4, true);
+	test_menu_button->get_popup()->add_separator();
+	test_menu_button->get_popup()->add_radio_check_item(TTR("Radio Item"));
+	test_menu_button->get_popup()->add_radio_check_item(TTR("Checked Radio Item"));
+	test_menu_button->get_popup()->set_item_checked(7, true);
+	test_menu_button->get_popup()->add_separator(TTR("Named Separator"));
+
+	PopupMenu *test_submenu = memnew(PopupMenu);
+	test_menu_button->get_popup()->add_submenu_node_item(TTR("Submenu"), test_submenu);
+	test_submenu->add_item(TTR("Subitem 1"));
+	test_submenu->add_item(TTR("Subitem 2"));
+	first_vb->add_child(test_menu_button);
+
+	OptionButton *test_option_button = memnew(OptionButton);
+	test_option_button->add_item("OptionButton");
+	test_option_button->add_separator();
+	test_option_button->add_item(TTR("Has"));
+	test_option_button->add_item(TTR("Many"));
+	test_option_button->add_item(TTR("Options"));
+	first_vb->add_child(test_option_button);
+	test_color_picker_button = memnew(ColorPickerButton);
+	first_vb->add_child(test_color_picker_button);
+
+	VBoxContainer *second_vb = memnew(VBoxContainer);
+	second_vb->set_h_size_flags(SIZE_EXPAND_FILL);
+	main_hb->add_child(second_vb);
+	second_vb->add_theme_constant_override("separation", 10 * EDSCALE);
+	LineEdit *le = memnew(LineEdit);
+	le->set_text("LineEdit");
+	second_vb->add_child(le);
+	le = memnew(LineEdit);
+	le->set_text(TTR("Disabled LineEdit"));
+	le->set_editable(false);
+	second_vb->add_child(le);
+	TextEdit *te = memnew(TextEdit);
+	te->set_text("TextEdit");
+	te->set_custom_minimum_size(Size2(0, 100) * EDSCALE);
+	second_vb->add_child(te);
+	second_vb->add_child(memnew(SpinBox));
+
+	HBoxContainer *vhb = memnew(HBoxContainer);
+	second_vb->add_child(vhb);
+	vhb->set_custom_minimum_size(Size2(0, 100) * EDSCALE);
+	vhb->add_child(memnew(VSlider));
+	VScrollBar *vsb = memnew(VScrollBar);
+	vsb->set_page(25);
+	vhb->add_child(vsb);
+	vhb->add_child(memnew(VSeparator));
+	VBoxContainer *hvb = memnew(VBoxContainer);
+	vhb->add_child(hvb);
+	hvb->set_alignment(BoxContainer::ALIGNMENT_CENTER);
+	hvb->set_h_size_flags(SIZE_EXPAND_FILL);
+	hvb->add_child(memnew(HSlider));
+	HScrollBar *hsb = memnew(HScrollBar);
+	hsb->set_page(25);
+	hvb->add_child(hsb);
+	HSlider *hs = memnew(HSlider);
+	hs->set_editable(false);
+	hvb->add_child(hs);
+	hvb->add_child(memnew(HSeparator));
+	ProgressBar *pb = memnew(ProgressBar);
+	pb->set_value(50);
+	hvb->add_child(pb);
+
+	VBoxContainer *third_vb = memnew(VBoxContainer);
+	third_vb->set_h_size_flags(SIZE_EXPAND_FILL);
+	third_vb->add_theme_constant_override("separation", 10 * EDSCALE);
+	main_hb->add_child(third_vb);
+
+	TabContainer *tc = memnew(TabContainer);
+	third_vb->add_child(tc);
+	tc->set_custom_minimum_size(Size2(0, 135) * EDSCALE);
+	Control *tcc = memnew(Control);
+	tcc->set_name(TTR("Tab 1"));
+	tc->add_child(tcc);
+	tcc = memnew(Control);
+	tcc->set_name(TTR("Tab 2"));
+	tc->add_child(tcc);
+	tcc = memnew(Control);
+	tcc->set_name(TTR("Tab 3"));
+	tc->add_child(tcc);
+	tc->set_tab_disabled(2, true);
+
+	Tree *test_tree = memnew(Tree);
+	third_vb->add_child(test_tree);
+	test_tree->set_custom_minimum_size(Size2(0, 175) * EDSCALE);
+
+	TreeItem *item = test_tree->create_item();
+	item->set_text(0, "Tree");
+	item = test_tree->create_item(test_tree->get_root());
+	item->set_text(0, "Item");
+	item = test_tree->create_item(test_tree->get_root());
+	item->set_editable(0, true);
+	item->set_text(0, TTR("Editable Item"));
+	TreeItem *sub_tree = test_tree->create_item(test_tree->get_root());
+	sub_tree->set_text(0, TTR("Subtree"));
+	item = test_tree->create_item(sub_tree);
+	item->set_cell_mode(0, TreeItem::CELL_MODE_CHECK);
+	item->set_editable(0, true);
+	item->set_text(0, "Check Item");
+	item = test_tree->create_item(sub_tree);
+	item->set_cell_mode(0, TreeItem::CELL_MODE_RANGE);
+	item->set_editable(0, true);
+	item->set_range_config(0, 0, 20, 0.1);
+	item->set_range(0, 2);
+	item = test_tree->create_item(sub_tree);
+	item->set_cell_mode(0, TreeItem::CELL_MODE_RANGE);
+	item->set_editable(0, true);
+	item->set_text(0, TTR("Has,Many,Options"));
+	item->set_range(0, 2);
+}
+
+void SceneThemeEditorPreview::_reload_scene() {
+	if (loaded_scene.is_null()) {
+		return;
+	}
+
+	if (loaded_scene->get_path().is_empty() || !ResourceLoader::exists(loaded_scene->get_path())) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid path, the PackedScene resource was probably moved or removed."));
+		emit_signal(SNAME("scene_invalidated"));
+		return;
+	}
+
+	for (int i = preview_content->get_child_count() - 1; i >= 0; i--) {
+		Node *node = preview_content->get_child(i);
+		node->queue_free();
+		preview_content->remove_child(node);
+	}
+
+	Node *instance = loaded_scene->instantiate();
+	if (!instance || !Object::cast_to<Control>(instance)) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid PackedScene resource, must have a Control node at its root."));
+		emit_signal(SNAME("scene_invalidated"));
+		return;
+	}
+
+	preview_content->add_child(instance);
+	emit_signal(SNAME("scene_reloaded"));
+}
+
+void SceneThemeEditorPreview::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_THEME_CHANGED: {
+			reload_scene_button->set_button_icon(get_editor_theme_icon(SNAME("Reload")));
+		} break;
+	}
+}
+
+void SceneThemeEditorPreview::_bind_methods() {
+	ADD_SIGNAL(MethodInfo("scene_invalidated"));
+	ADD_SIGNAL(MethodInfo("scene_reloaded"));
+}
+
+bool SceneThemeEditorPreview::set_preview_scene(const String &p_path) {
+	loaded_scene = ResourceLoader::load(p_path);
+	if (loaded_scene.is_null()) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid file, not a PackedScene resource."));
+		return false;
+	}
+
+	Node *instance = loaded_scene->instantiate();
+
+	if (!instance) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid PackedScene resource, could not instantiate it."));
+		return false;
+	}
+
+	if (!Object::cast_to<Control>(instance)) {
+		EditorNode::get_singleton()->show_warning(TTR("Invalid PackedScene resource, must have a Control node at its root."));
+		memdelete(instance);
+		return false;
+	}
+
+	preview_content->add_child(instance);
+	return true;
+}
+
+String SceneThemeEditorPreview::get_preview_scene_path() const {
+	if (loaded_scene.is_null()) {
+		return "";
+	}
+
+	return loaded_scene->get_path();
+}
+
+SceneThemeEditorPreview::SceneThemeEditorPreview() {
+	preview_toolbar->add_child(memnew(VSeparator));
+
+	reload_scene_button = memnew(Button);
+	reload_scene_button->set_flat(true);
+	reload_scene_button->set_tooltip_text(TTR("Reload the scene to reflect its most actual state."));
+	preview_toolbar->add_child(reload_scene_button);
+	reload_scene_button->connect(SceneStringName(pressed), callable_mp(this, &SceneThemeEditorPreview::_reload_scene));
+}