godot/editor/editor_spin_slider.cpp

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2018-05-17 01:19:33 +08:00
/*************************************************************************/
/* editor_spin_slider.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
/* 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 "editor_spin_slider.h"
#include "core/input/input.h"
#include "core/math/expression.h"
#include "editor_node.h"
#include "editor_scale.h"
String EditorSpinSlider::get_tooltip(const Point2 &p_pos) const {
if (grabber->is_visible()) {
return TS->format_number(rtos(get_value())) + "\n\n" + TTR("Hold Ctrl to round to integers. Hold Shift for more precise changes.");
}
return TS->format_number(rtos(get_value()));
}
String EditorSpinSlider::get_text_value() const {
return TS->format_number(String::num(get_value(), Math::range_step_decimals(get_step())));
}
void EditorSpinSlider::_gui_input(const Ref<InputEvent> &p_event) {
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ERR_FAIL_COND(p_event.is_null());
if (read_only) {
return;
}
Ref<InputEventMouseButton> mb = p_event;
if (mb.is_valid()) {
if (mb->get_button_index() == MOUSE_BUTTON_LEFT) {
if (mb->is_pressed()) {
if (updown_offset != -1 && mb->get_position().x > updown_offset) {
//there is an updown, so use it.
if (mb->get_position().y < get_size().height / 2) {
set_value(get_value() + get_step());
} else {
set_value(get_value() - get_step());
}
return;
} else {
grabbing_spinner_attempt = true;
grabbing_spinner_dist_cache = 0;
pre_grab_value = get_value();
grabbing_spinner = false;
}
} else {
if (grabbing_spinner_attempt) {
if (grabbing_spinner) {
Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_VISIBLE);
Input::get_singleton()->warp_mouse_position(grabbing_spinner_mouse_pos);
update();
} else {
_focus_entered();
}
grabbing_spinner = false;
grabbing_spinner_attempt = false;
}
}
} else if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_UP || mb->get_button_index() == MOUSE_BUTTON_WHEEL_DOWN) {
if (grabber->is_visible()) {
call_deferred("update");
}
}
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid()) {
if (grabbing_spinner_attempt) {
double diff_x = mm->get_relative().x;
if (mm->is_shift_pressed() && grabbing_spinner) {
diff_x *= 0.1;
}
grabbing_spinner_dist_cache += diff_x;
if (!grabbing_spinner && ABS(grabbing_spinner_dist_cache) > 4 * EDSCALE) {
Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_CAPTURED);
grabbing_spinner = true;
}
if (grabbing_spinner) {
// Don't make the user scroll all the way back to 'in range' if they went off the end.
if (pre_grab_value < get_min() && !is_lesser_allowed()) {
pre_grab_value = get_min();
}
if (pre_grab_value > get_max() && !is_greater_allowed()) {
pre_grab_value = get_max();
}
if (mm->is_ctrl_pressed()) {
// If control was just pressed, don't make the value do a huge jump in magnitude.
if (grabbing_spinner_dist_cache != 0) {
pre_grab_value += grabbing_spinner_dist_cache * get_step();
grabbing_spinner_dist_cache = 0;
}
set_value(Math::round(pre_grab_value + get_step() * grabbing_spinner_dist_cache * 10));
} else {
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set_value(pre_grab_value + get_step() * grabbing_spinner_dist_cache);
}
}
} else if (updown_offset != -1) {
bool new_hover = (mm->get_position().x > updown_offset);
if (new_hover != hover_updown) {
hover_updown = new_hover;
update();
}
}
}
Ref<InputEventKey> k = p_event;
if (k.is_valid() && k->is_pressed() && k->is_action("ui_accept")) {
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_focus_entered();
}
}
void EditorSpinSlider::_grabber_gui_input(const Ref<InputEvent> &p_event) {
Ref<InputEventMouseButton> mb = p_event;
if (grabbing_grabber) {
if (mb.is_valid()) {
if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_UP) {
set_value(get_value() + get_step());
mousewheel_over_grabber = true;
} else if (mb->get_button_index() == MOUSE_BUTTON_WHEEL_DOWN) {
set_value(get_value() - get_step());
mousewheel_over_grabber = true;
}
}
}
if (mb.is_valid() && mb->get_button_index() == MOUSE_BUTTON_LEFT) {
if (mb->is_pressed()) {
grabbing_grabber = true;
if (!mousewheel_over_grabber) {
grabbing_ratio = get_as_ratio();
grabbing_from = grabber->get_transform().xform(mb->get_position()).x;
}
} else {
grabbing_grabber = false;
mousewheel_over_grabber = false;
}
}
Ref<InputEventMouseMotion> mm = p_event;
if (mm.is_valid() && grabbing_grabber) {
if (mousewheel_over_grabber) {
return;
}
float scale_x = get_global_transform_with_canvas().get_scale().x;
ERR_FAIL_COND(Math::is_zero_approx(scale_x));
float grabbing_ofs = (grabber->get_transform().xform(mm->get_position()).x - grabbing_from) / float(grabber_range) / scale_x;
set_as_ratio(grabbing_ratio + grabbing_ofs);
update();
}
}
void EditorSpinSlider::_notification(int p_what) {
if (p_what == NOTIFICATION_WM_WINDOW_FOCUS_OUT ||
p_what == NOTIFICATION_WM_WINDOW_FOCUS_IN ||
p_what == NOTIFICATION_EXIT_TREE) {
if (grabbing_spinner) {
grabber->hide();
Input::get_singleton()->set_mouse_mode(Input::MOUSE_MODE_VISIBLE);
grabbing_spinner = false;
grabbing_spinner_attempt = false;
}
}
if (p_what == NOTIFICATION_READY) {
// Add a left margin to the stylebox to make the number align with the Label
// when it's edited. The LineEdit "focus" stylebox uses the "normal" stylebox's
// default margins.
Ref<StyleBoxFlat> stylebox =
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EditorNode::get_singleton()->get_theme_base()->get_theme_stylebox("normal", "LineEdit")->duplicate();
// EditorSpinSliders with a label have more space on the left, so add an
// higher margin to match the location where the text begins.
// The margin values below were determined by empirical testing.
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stylebox->set_default_margin(SIDE_LEFT, (get_label() != String() ? 23 : 16) * EDSCALE);
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value_input->add_theme_style_override("normal", stylebox);
}
if (p_what == NOTIFICATION_DRAW) {
updown_offset = -1;
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Ref<StyleBox> sb = get_theme_stylebox("normal", "LineEdit");
if (!flat) {
draw_style_box(sb, Rect2(Vector2(), get_size()));
}
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Ref<Font> font = get_theme_font("font", "LineEdit");
int font_size = get_theme_font_size("font_size", "LineEdit");
int sep_base = 4 * EDSCALE;
int sep = sep_base + sb->get_offset().x; //make it have the same margin on both sides, looks better
int string_width = font->get_string_size(label, font_size).width;
int number_width = get_size().width - sb->get_minimum_size().width - string_width - sep;
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Ref<Texture2D> updown = get_theme_icon("updown", "SpinBox");
if (get_step() == 1) {
number_width -= updown->get_width();
}
String numstr = get_text_value();
int vofs = (get_size().height - font->get_height(font_size)) / 2 + font->get_ascent(font_size);
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Color fc = get_theme_color("font_color", "LineEdit");
Color lc;
if (use_custom_label_color) {
lc = custom_label_color;
} else {
lc = fc;
}
if (flat && label != String()) {
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Color label_bg_color = get_theme_color("dark_color_3", "Editor");
draw_rect(Rect2(Vector2(), Vector2(sb->get_offset().x * 2 + string_width, get_size().height)), label_bg_color);
}
if (has_focus()) {
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Ref<StyleBox> focus = get_theme_stylebox("focus", "LineEdit");
draw_style_box(focus, Rect2(Vector2(), get_size()));
}
draw_string(font, Vector2(Math::round(sb->get_offset().x), vofs), label, HALIGN_LEFT, -1, font_size, lc * Color(1, 1, 1, 0.5));
draw_string(font, Vector2(Math::round(sb->get_offset().x + string_width + sep), vofs), numstr, HALIGN_LEFT, number_width, font_size, fc);
if (get_step() == 1) {
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Ref<Texture2D> updown2 = get_theme_icon("updown", "SpinBox");
int updown_vofs = (get_size().height - updown2->get_height()) / 2;
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updown_offset = get_size().width - sb->get_margin(SIDE_RIGHT) - updown2->get_width();
Color c(1, 1, 1);
if (hover_updown) {
c *= Color(1.2, 1.2, 1.2);
}
draw_texture(updown2, Vector2(updown_offset, updown_vofs), c);
if (grabber->is_visible()) {
grabber->hide();
}
} else if (!hide_slider) {
int grabber_w = 4 * EDSCALE;
int width = get_size().width - sb->get_minimum_size().width - grabber_w;
int ofs = sb->get_offset().x;
int svofs = (get_size().height + vofs) / 2 - 1;
Color c = fc;
c.a = 0.2;
draw_rect(Rect2(ofs, svofs + 1, width, 2 * EDSCALE), c);
int gofs = get_as_ratio() * width;
c.a = 0.9;
Rect2 grabber_rect = Rect2(ofs + gofs, svofs + 1, grabber_w, 2 * EDSCALE);
draw_rect(grabber_rect, c);
grabbing_spinner_mouse_pos = get_global_position() + grabber_rect.position + grabber_rect.size * 0.5;
bool display_grabber = (mouse_over_spin || mouse_over_grabber) && !grabbing_spinner && !value_input_popup->is_visible();
if (grabber->is_visible() != display_grabber) {
if (display_grabber) {
grabber->show();
} else {
grabber->hide();
}
}
if (display_grabber) {
Ref<Texture2D> grabber_tex;
if (mouse_over_grabber) {
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grabber_tex = get_theme_icon("grabber_highlight", "HSlider");
} else {
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grabber_tex = get_theme_icon("grabber", "HSlider");
}
if (grabber->get_texture() != grabber_tex) {
grabber->set_texture(grabber_tex);
}
Vector2 scale = get_global_transform_with_canvas().get_scale();
grabber->set_scale(scale);
grabber->set_size(Size2(0, 0));
grabber->set_position(get_global_position() + (grabber_rect.position + grabber_rect.size * 0.5 - grabber->get_size() * 0.5) * scale);
if (mousewheel_over_grabber) {
Input::get_singleton()->warp_mouse_position(grabber->get_position() + grabber_rect.size);
}
grabber_range = width;
}
}
}
if (p_what == NOTIFICATION_MOUSE_ENTER) {
mouse_over_spin = true;
update();
}
if (p_what == NOTIFICATION_MOUSE_EXIT) {
mouse_over_spin = false;
update();
}
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if (p_what == NOTIFICATION_FOCUS_ENTER) {
if ((Input::get_singleton()->is_action_pressed("ui_focus_next") || Input::get_singleton()->is_action_pressed("ui_focus_prev")) && !value_input_just_closed) {
_focus_entered();
}
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value_input_just_closed = false;
}
}
Size2 EditorSpinSlider::get_minimum_size() const {
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Ref<StyleBox> sb = get_theme_stylebox("normal", "LineEdit");
Ref<Font> font = get_theme_font("font", "LineEdit");
int font_size = get_theme_font_size("font_size", "LineEdit");
Size2 ms = sb->get_minimum_size();
ms.height += font->get_height(font_size);
return ms;
}
void EditorSpinSlider::set_hide_slider(bool p_hide) {
hide_slider = p_hide;
update();
}
bool EditorSpinSlider::is_hiding_slider() const {
return hide_slider;
}
void EditorSpinSlider::set_label(const String &p_label) {
label = p_label;
update();
}
String EditorSpinSlider::get_label() const {
return label;
}
void EditorSpinSlider::_evaluate_input_text() {
// Replace comma with dot to support it as decimal separator (GH-6028).
// This prevents using functions like `pow()`, but using functions
// in EditorSpinSlider is a barely known (and barely used) feature.
// Instead, we'd rather support German/French keyboard layouts out of the box.
const String text = TS->parse_number(value_input->get_text().replace(",", "."));
Ref<Expression> expr;
expr.instance();
Error err = expr->parse(text);
if (err != OK) {
return;
}
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Variant v = expr->execute(Array(), nullptr, false);
if (v.get_type() == Variant::NIL) {
return;
}
set_value(v);
}
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//text_entered signal
void EditorSpinSlider::_value_input_entered(const String &p_text) {
value_input_just_closed = true;
value_input_popup->hide();
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}
//modal_closed signal
void EditorSpinSlider::_value_input_closed() {
_evaluate_input_text();
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value_input_just_closed = true;
}
//focus_exited signal
void EditorSpinSlider::_value_focus_exited() {
// discontinue because the focus_exit was caused by right-click context menu
if (value_input->get_menu()->is_visible()) {
return;
}
_evaluate_input_text();
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// focus is not on the same element after the vlalue_input was exited
// -> focus is on next element
// -> TAB was pressed
// -> modal_close was not called
// -> need to close/hide manually
if (!value_input_just_closed) { //value_input_just_closed should do the same
value_input_popup->hide();
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//tab was pressed
} else {
//enter, click, esc
}
}
void EditorSpinSlider::_grabber_mouse_entered() {
mouse_over_grabber = true;
update();
}
void EditorSpinSlider::_grabber_mouse_exited() {
mouse_over_grabber = false;
update();
}
void EditorSpinSlider::set_read_only(bool p_enable) {
read_only = p_enable;
update();
}
bool EditorSpinSlider::is_read_only() const {
return read_only;
}
void EditorSpinSlider::set_flat(bool p_enable) {
flat = p_enable;
update();
}
bool EditorSpinSlider::is_flat() const {
return flat;
}
void EditorSpinSlider::set_custom_label_color(bool p_use_custom_label_color, Color p_custom_label_color) {
use_custom_label_color = p_use_custom_label_color;
custom_label_color = p_custom_label_color;
}
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void EditorSpinSlider::_focus_entered() {
Rect2 gr = get_screen_rect();
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value_input->set_text(get_text_value());
value_input_popup->set_position(gr.position);
value_input_popup->set_size(gr.size);
value_input_popup->call_deferred("popup");
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value_input->call_deferred("grab_focus");
value_input->call_deferred("select_all");
value_input->set_focus_next(find_next_valid_focus()->get_path());
value_input->set_focus_previous(find_prev_valid_focus()->get_path());
}
void EditorSpinSlider::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_label", "label"), &EditorSpinSlider::set_label);
ClassDB::bind_method(D_METHOD("get_label"), &EditorSpinSlider::get_label);
ClassDB::bind_method(D_METHOD("set_read_only", "read_only"), &EditorSpinSlider::set_read_only);
ClassDB::bind_method(D_METHOD("is_read_only"), &EditorSpinSlider::is_read_only);
ClassDB::bind_method(D_METHOD("set_flat", "flat"), &EditorSpinSlider::set_flat);
ClassDB::bind_method(D_METHOD("is_flat"), &EditorSpinSlider::is_flat);
ClassDB::bind_method(D_METHOD("_gui_input"), &EditorSpinSlider::_gui_input);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "label"), "set_label", "get_label");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "read_only"), "set_read_only", "is_read_only");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "flat"), "set_flat", "is_flat");
}
EditorSpinSlider::EditorSpinSlider() {
flat = false;
grabbing_spinner_attempt = false;
grabbing_spinner = false;
grabbing_spinner_dist_cache = 0;
pre_grab_value = 0;
set_focus_mode(FOCUS_ALL);
updown_offset = -1;
hover_updown = false;
grabber = memnew(TextureRect);
add_child(grabber);
grabber->hide();
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grabber->set_as_top_level(true);
grabber->set_mouse_filter(MOUSE_FILTER_STOP);
grabber->connect("mouse_entered", callable_mp(this, &EditorSpinSlider::_grabber_mouse_entered));
grabber->connect("mouse_exited", callable_mp(this, &EditorSpinSlider::_grabber_mouse_exited));
grabber->connect("gui_input", callable_mp(this, &EditorSpinSlider::_grabber_gui_input));
mouse_over_spin = false;
mouse_over_grabber = false;
mousewheel_over_grabber = false;
grabbing_grabber = false;
grabber_range = 1;
value_input_popup = memnew(Popup);
add_child(value_input_popup);
value_input = memnew(LineEdit);
value_input_popup->add_child(value_input);
value_input_popup->set_wrap_controls(true);
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value_input->set_anchors_and_offsets_preset(PRESET_WIDE);
value_input_popup->connect("popup_hide", callable_mp(this, &EditorSpinSlider::_value_input_closed));
value_input->connect("text_entered", callable_mp(this, &EditorSpinSlider::_value_input_entered));
value_input->connect("focus_exited", callable_mp(this, &EditorSpinSlider::_value_focus_exited));
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value_input_just_closed = false;
hide_slider = false;
read_only = false;
use_custom_label_color = false;
}