godot/scene/gui/graph_frame.cpp

358 lines
13 KiB
C++

/**************************************************************************/
/* graph_frame.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 "graph_frame.h"
#include "core/string/translation.h"
#include "scene/gui/box_container.h"
#include "scene/gui/label.h"
#include "scene/resources/style_box_flat.h"
#include "scene/resources/style_box_texture.h"
#include "scene/theme/theme_db.h"
void GraphFrame::gui_input(const Ref<InputEvent> &p_ev) {
ERR_FAIL_COND(p_ev.is_null());
Ref<InputEventMouseButton> mb = p_ev;
if (mb.is_valid()) {
ERR_FAIL_NULL_MSG(get_parent_control(), "GraphFrame must be the child of a GraphEdit node.");
if (mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
Vector2 mpos = mb->get_position();
Ref<Texture2D> resizer = theme_cache.resizer;
if (resizable && mpos.x > get_size().x - resizer->get_width() && mpos.y > get_size().y - resizer->get_height()) {
resizing = true;
resizing_from = mpos;
resizing_from_size = get_size();
accept_event();
return;
}
emit_signal(SNAME("raise_request"));
}
if (!mb->is_pressed() && mb->get_button_index() == MouseButton::LEFT) {
if (resizing) {
resizing = false;
emit_signal(SNAME("resize_end"), get_size());
return;
}
}
}
Ref<InputEventMouseMotion> mm = p_ev;
// Only resize if the frame is not auto-resizing based on linked nodes.
if (resizing && !autoshrink_enabled && mm.is_valid()) {
Vector2 mpos = mm->get_position();
Vector2 diff = mpos - resizing_from;
emit_signal(SNAME("resize_request"), resizing_from_size + diff);
}
}
Control::CursorShape GraphFrame::get_cursor_shape(const Point2 &p_pos) const {
if (resizable && !autoshrink_enabled) {
if (resizing || (p_pos.x > get_size().x - theme_cache.resizer->get_width() && p_pos.y > get_size().y - theme_cache.resizer->get_height())) {
return CURSOR_FDIAGSIZE;
}
}
return Control::get_cursor_shape(p_pos);
}
void GraphFrame::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_DRAW: {
// Used for layout calculations.
Ref<StyleBox> sb_panel = theme_cache.panel;
Ref<StyleBox> sb_titlebar = theme_cache.titlebar;
// Used for drawing.
Ref<StyleBox> sb_to_draw_panel = selected ? theme_cache.panel_selected : sb_panel;
Ref<StyleBox> sb_to_draw_titlebar = selected ? theme_cache.titlebar_selected : sb_titlebar;
Ref<StyleBoxFlat> sb_panel_flat = sb_to_draw_panel;
Ref<StyleBoxTexture> sb_panel_texture = sb_to_draw_panel;
Rect2 titlebar_rect(Point2(), titlebar_hbox->get_size() + sb_titlebar->get_minimum_size());
Size2 body_size = get_size();
body_size.y -= titlebar_rect.size.height;
Rect2 body_rect(Point2(0, titlebar_rect.size.height), body_size);
// Draw body stylebox.
if (tint_color_enabled) {
if (sb_panel_flat.is_valid()) {
Color original_border_color = sb_panel_flat->get_border_color();
sb_panel_flat = sb_panel_flat->duplicate();
sb_panel_flat->set_bg_color(tint_color);
sb_panel_flat->set_border_color(selected ? original_border_color : tint_color.lightened(0.3));
draw_style_box(sb_panel_flat, body_rect);
} else if (sb_panel_texture.is_valid()) {
sb_panel_texture = sb_panel_texture->duplicate();
sb_panel_texture->set_modulate(tint_color);
draw_style_box(sb_panel_texture, body_rect);
}
} else {
draw_style_box(sb_panel_flat, body_rect);
}
// Draw title bar stylebox above.
draw_style_box(sb_to_draw_titlebar, titlebar_rect);
// Only draw the resize handle if the frame is not auto-resizing.
if (resizable && !autoshrink_enabled) {
Ref<Texture2D> resizer = theme_cache.resizer;
Color resizer_color = theme_cache.resizer_color;
if (resizable) {
draw_texture(resizer, get_size() - resizer->get_size(), resizer_color);
}
}
} break;
}
}
void GraphFrame::_resort() {
Ref<StyleBox> sb_panel = theme_cache.panel;
Ref<StyleBox> sb_titlebar = theme_cache.titlebar;
// Resort titlebar first.
Size2 titlebar_size = Size2(get_size().width, titlebar_hbox->get_size().height);
titlebar_size -= sb_titlebar->get_minimum_size();
Rect2 titlebar_rect = Rect2(sb_titlebar->get_offset(), titlebar_size);
fit_child_in_rect(titlebar_hbox, titlebar_rect);
// After resort the children of the titlebar container may have changed their height (e.g. Label autowrap).
Size2i titlebar_min_size = titlebar_hbox->get_combined_minimum_size();
Size2 size = get_size() - sb_panel->get_minimum_size() - Size2(0, titlebar_min_size.height + sb_titlebar->get_minimum_size().height);
Point2 offset = Point2(sb_panel->get_margin(SIDE_LEFT), sb_panel->get_margin(SIDE_TOP) + titlebar_min_size.height + sb_titlebar->get_minimum_size().height);
for (int i = 0; i < get_child_count(false); i++) {
Control *child = as_sortable_control(get_child(i, false));
if (!child) {
continue;
}
fit_child_in_rect(child, Rect2(offset, size));
}
}
void GraphFrame::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_title", "title"), &GraphFrame::set_title);
ClassDB::bind_method(D_METHOD("get_title"), &GraphFrame::get_title);
ClassDB::bind_method(D_METHOD("get_titlebar_hbox"), &GraphFrame::get_titlebar_hbox);
ClassDB::bind_method(D_METHOD("set_autoshrink_enabled", "shrink"), &GraphFrame::set_autoshrink_enabled);
ClassDB::bind_method(D_METHOD("is_autoshrink_enabled"), &GraphFrame::is_autoshrink_enabled);
ClassDB::bind_method(D_METHOD("set_autoshrink_margin", "autoshrink_margin"), &GraphFrame::set_autoshrink_margin);
ClassDB::bind_method(D_METHOD("get_autoshrink_margin"), &GraphFrame::get_autoshrink_margin);
ClassDB::bind_method(D_METHOD("set_drag_margin", "drag_margin"), &GraphFrame::set_drag_margin);
ClassDB::bind_method(D_METHOD("get_drag_margin"), &GraphFrame::get_drag_margin);
ClassDB::bind_method(D_METHOD("set_tint_color_enabled", "enable"), &GraphFrame::set_tint_color_enabled);
ClassDB::bind_method(D_METHOD("is_tint_color_enabled"), &GraphFrame::is_tint_color_enabled);
ClassDB::bind_method(D_METHOD("set_tint_color", "color"), &GraphFrame::set_tint_color);
ClassDB::bind_method(D_METHOD("get_tint_color"), &GraphFrame::get_tint_color);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "title"), "set_title", "get_title");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "autoshrink_enabled"), "set_autoshrink_enabled", "is_autoshrink_enabled");
ADD_PROPERTY(PropertyInfo(Variant::INT, "autoshrink_margin", PROPERTY_HINT_RANGE, "0,128,1"), "set_autoshrink_margin", "get_autoshrink_margin");
ADD_PROPERTY(PropertyInfo(Variant::INT, "drag_margin", PROPERTY_HINT_RANGE, "0,128,1"), "set_drag_margin", "get_drag_margin");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "tint_color_enabled"), "set_tint_color_enabled", "is_tint_color_enabled");
ADD_PROPERTY(PropertyInfo(Variant::COLOR, "tint_color"), "set_tint_color", "get_tint_color");
ADD_SIGNAL(MethodInfo(SNAME("autoshrink_changed")));
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphFrame, panel);
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphFrame, panel_selected);
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphFrame, titlebar);
BIND_THEME_ITEM(Theme::DATA_TYPE_STYLEBOX, GraphFrame, titlebar_selected);
BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, GraphFrame, resizer);
BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, GraphFrame, resizer_color);
}
void GraphFrame::_validate_property(PropertyInfo &p_property) const {
if (p_property.name == "resizable") {
p_property.usage = PROPERTY_USAGE_NO_EDITOR;
}
}
void GraphFrame::set_title(const String &p_title) {
if (title == p_title) {
return;
}
title = p_title;
if (title_label) {
title_label->set_text(title);
}
update_minimum_size();
}
String GraphFrame::get_title() const {
return title;
}
void GraphFrame::set_autoshrink_enabled(bool p_shrink) {
if (autoshrink_enabled == p_shrink) {
return;
}
autoshrink_enabled = p_shrink;
emit_signal("autoshrink_changed", get_size());
queue_redraw();
}
bool GraphFrame::is_autoshrink_enabled() const {
return autoshrink_enabled;
}
void GraphFrame::set_autoshrink_margin(const int &p_margin) {
if (autoshrink_margin == p_margin) {
return;
}
autoshrink_margin = p_margin;
emit_signal("autoshrink_changed", get_size());
}
int GraphFrame::get_autoshrink_margin() const {
return autoshrink_margin;
}
HBoxContainer *GraphFrame::get_titlebar_hbox() {
return titlebar_hbox;
}
Size2 GraphFrame::get_titlebar_size() const {
return titlebar_hbox->get_size() + theme_cache.titlebar->get_minimum_size();
}
void GraphFrame::set_drag_margin(int p_margin) {
drag_margin = p_margin;
}
int GraphFrame::get_drag_margin() const {
return drag_margin;
}
void GraphFrame::set_tint_color_enabled(bool p_enable) {
tint_color_enabled = p_enable;
queue_redraw();
}
bool GraphFrame::is_tint_color_enabled() const {
return tint_color_enabled;
}
void GraphFrame::set_tint_color(const Color &p_color) {
tint_color = p_color;
queue_redraw();
}
Color GraphFrame::get_tint_color() const {
return tint_color;
}
bool GraphFrame::has_point(const Point2 &p_point) const {
Ref<StyleBox> sb_panel = theme_cache.panel;
Ref<StyleBox> sb_titlebar = theme_cache.titlebar;
Ref<Texture2D> resizer = theme_cache.resizer;
if (Rect2(get_size() - resizer->get_size(), resizer->get_size()).has_point(p_point)) {
return true;
}
// For grabbing on the titlebar.
int titlebar_height = titlebar_hbox->get_size().height + sb_titlebar->get_minimum_size().height;
if (Rect2(0, 0, get_size().width, titlebar_height).has_point(p_point)) {
return true;
}
// Allow grabbing on all sides of the frame.
Rect2 frame_rect = Rect2(0, 0, get_size().width, get_size().height);
Rect2 no_drag_rect = frame_rect.grow(-drag_margin);
if (frame_rect.has_point(p_point) && !no_drag_rect.has_point(p_point)) {
return true;
}
return false;
}
Size2 GraphFrame::get_minimum_size() const {
Ref<StyleBox> sb_panel = theme_cache.panel;
Ref<StyleBox> sb_titlebar = theme_cache.titlebar;
Size2 minsize = titlebar_hbox->get_minimum_size() + sb_titlebar->get_minimum_size();
for (int i = 0; i < get_child_count(false); i++) {
Control *child = as_sortable_control(get_child(i, false));
if (!child) {
continue;
}
Size2i size = child->get_combined_minimum_size();
size.width += sb_panel->get_minimum_size().width;
minsize.x = MAX(minsize.x, size.x);
minsize.y += MAX(minsize.y, size.y);
}
minsize.height += sb_panel->get_minimum_size().height;
return minsize;
}
GraphFrame::GraphFrame() {
titlebar_hbox = memnew(HBoxContainer);
titlebar_hbox->set_h_size_flags(SIZE_EXPAND_FILL);
add_child(titlebar_hbox, false, INTERNAL_MODE_FRONT);
title_label = memnew(Label);
title_label->set_theme_type_variation("GraphFrameTitleLabel");
title_label->set_h_size_flags(SIZE_EXPAND_FILL);
title_label->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_CENTER);
titlebar_hbox->add_child(title_label);
set_mouse_filter(MOUSE_FILTER_STOP);
}