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Diffstat (limited to 'editor/editor_zoom_widget.cpp')
| -rw-r--r-- | editor/editor_zoom_widget.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/editor/editor_zoom_widget.cpp b/editor/editor_zoom_widget.cpp new file mode 100644 index 0000000000..f9be829493 --- /dev/null +++ b/editor/editor_zoom_widget.cpp @@ -0,0 +1,163 @@ +/*************************************************************************/ +/* editor_zoom_widget.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). */ +/* */ +/* 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_zoom_widget.h" + +#include "core/os/keyboard.h" +#include "editor/editor_scale.h" +#include "editor/editor_settings.h" + +void EditorZoomWidget::_update_zoom_label() { + String zoom_text; + // The zoom level displayed is relative to the editor scale + // (like in most image editors). Its lower bound is clamped to 1 as some people + // lower the editor scale to increase the available real estate, + // even if their display doesn't have a particularly low DPI. + if (zoom >= 10) { + // Don't show a decimal when the zoom level is higher than 1000 %. + zoom_text = TS->format_number(rtos(Math::round((zoom / MAX(1, EDSCALE)) * 100))) + " " + TS->percent_sign(); + } else { + zoom_text = TS->format_number(rtos(Math::snapped((zoom / MAX(1, EDSCALE)) * 100, 0.1))) + " " + TS->percent_sign(); + } + + zoom_reset->set_text(zoom_text); +} + +void EditorZoomWidget::_button_zoom_minus() { + set_zoom_by_increments(-6); + emit_signal("zoom_changed", zoom); +} + +void EditorZoomWidget::_button_zoom_reset() { + set_zoom(1.0); + emit_signal("zoom_changed", zoom); +} + +void EditorZoomWidget::_button_zoom_plus() { + set_zoom_by_increments(6); + emit_signal("zoom_changed", zoom); +} + +float EditorZoomWidget::get_zoom() { + return zoom; +} + +void EditorZoomWidget::set_zoom(float p_zoom) { + if (p_zoom > 0 && p_zoom != zoom) { + zoom = p_zoom; + _update_zoom_label(); + } +} + +void EditorZoomWidget::set_zoom_by_increments(int p_increment_count) { + // Base increment factor defined as the twelveth root of two. + // This allow a smooth geometric evolution of the zoom, with the advantage of + // visiting all integer power of two scale factors. + // note: this is analogous to the 'semitones' interval in the music world + // In order to avoid numerical imprecisions, we compute and edit a zoom index + // with the following relation: zoom = 2 ^ (index / 12) + + if (zoom < CMP_EPSILON || p_increment_count == 0) { + return; + } + + // Remove Editor scale from the index computation + float zoom_noscale = zoom / MAX(1, EDSCALE); + + // zoom = 2**(index/12) => log2(zoom) = index/12 + float closest_zoom_index = Math::round(Math::log(zoom_noscale) * 12.f / Math::log(2.f)); + + float new_zoom_index = closest_zoom_index + p_increment_count; + float new_zoom = Math::pow(2.f, new_zoom_index / 12.f); + + // Restore Editor scale transformation + new_zoom *= MAX(1, EDSCALE); + + set_zoom(new_zoom); +} + +void EditorZoomWidget::_notification(int p_what) { + switch (p_what) { + case NOTIFICATION_ENTER_TREE: + case NOTIFICATION_THEME_CHANGED: + zoom_minus->set_icon(get_theme_icon("ZoomLess", "EditorIcons")); + zoom_plus->set_icon(get_theme_icon("ZoomMore", "EditorIcons")); + break; + default: + break; + } +} + +void EditorZoomWidget::_bind_methods() { + ClassDB::bind_method(D_METHOD("set_zoom", "zoom"), &EditorZoomWidget::set_zoom); + ClassDB::bind_method(D_METHOD("get_zoom"), &EditorZoomWidget::get_zoom); + ClassDB::bind_method(D_METHOD("set_zoom_by_increments", "increment"), &EditorZoomWidget::set_zoom_by_increments); + + ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "zoom"), "set_zoom", "get_zoom"); + + ADD_SIGNAL(MethodInfo("zoom_changed", PropertyInfo(Variant::FLOAT, "zoom"))); +} + +EditorZoomWidget::EditorZoomWidget() { + // Zoom buttons + zoom_minus = memnew(Button); + zoom_minus->set_flat(true); + add_child(zoom_minus); + zoom_minus->connect("pressed", callable_mp(this, &EditorZoomWidget::_button_zoom_minus)); + zoom_minus->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_minus", TTR("Zoom Out"), KEY_MASK_CMD | KEY_MINUS)); + zoom_minus->set_shortcut_context(this); + zoom_minus->set_focus_mode(FOCUS_NONE); + + zoom_reset = memnew(Button); + zoom_reset->set_flat(true); + add_child(zoom_reset); + zoom_reset->add_theme_constant_override("outline_size", 1); + zoom_reset->add_theme_color_override("font_outline_color", Color(0, 0, 0)); + zoom_reset->add_theme_color_override("font_color", Color(1, 1, 1)); + zoom_reset->connect("pressed", callable_mp(this, &EditorZoomWidget::_button_zoom_reset)); + zoom_reset->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_reset", TTR("Zoom Reset"), KEY_MASK_CMD | KEY_0)); + zoom_reset->set_shortcut_context(this); + zoom_reset->set_focus_mode(FOCUS_NONE); + zoom_reset->set_text_align(Button::TextAlign::ALIGN_CENTER); + // Prevent the button's size from changing when the text size changes + zoom_reset->set_custom_minimum_size(Size2(75 * EDSCALE, 0)); + + zoom_plus = memnew(Button); + zoom_plus->set_flat(true); + add_child(zoom_plus); + zoom_plus->connect("pressed", callable_mp(this, &EditorZoomWidget::_button_zoom_plus)); + zoom_plus->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_plus", TTR("Zoom In"), KEY_MASK_CMD | KEY_EQUAL)); // Usually direct access key for PLUS + zoom_plus->set_shortcut_context(this); + zoom_plus->set_focus_mode(FOCUS_NONE); + + _update_zoom_label(); + + add_theme_constant_override("separation", Math::round(-8 * EDSCALE)); +} |