diff options
Diffstat (limited to 'scene/gui/view_panner.cpp')
| -rw-r--r-- | scene/gui/view_panner.cpp | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/scene/gui/view_panner.cpp b/scene/gui/view_panner.cpp new file mode 100644 index 0000000000..ba5e8d4a17 --- /dev/null +++ b/scene/gui/view_panner.cpp @@ -0,0 +1,142 @@ +/*************************************************************************/ +/* view_panner.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 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 "view_panner.h" + +#include "core/input/input.h" +#include "core/os/keyboard.h" + +bool ViewPanner::gui_input(const Ref<InputEvent> &p_event, Rect2 p_canvas_rect) { + Ref<InputEventMouseButton> mb = p_event; + if (mb.is_valid()) { + // Alt modifier is unused, so ignore such events. + if (mb->is_alt_pressed()) { + return false; + } + + Vector2i scroll_vec = Vector2((mb->get_button_index() == MouseButton::WHEEL_RIGHT) - (mb->get_button_index() == MouseButton::WHEEL_LEFT), (mb->get_button_index() == MouseButton::WHEEL_DOWN) - (mb->get_button_index() == MouseButton::WHEEL_UP)); + if (scroll_vec != Vector2()) { + if (control_scheme == SCROLL_PANS) { + if (mb->is_ctrl_pressed()) { + scroll_vec.y *= mb->get_factor(); + callback_helper(zoom_callback, scroll_vec, mb->get_position()); + return true; + } else { + Vector2 panning; + if (mb->is_shift_pressed()) { + panning.x += mb->get_factor() * scroll_vec.y; + panning.y += mb->get_factor() * scroll_vec.x; + } else { + panning.y += mb->get_factor() * scroll_vec.y; + panning.x += mb->get_factor() * scroll_vec.x; + } + callback_helper(scroll_callback, panning); + return true; + } + } else { + if (mb->is_ctrl_pressed()) { + Vector2 panning; + if (mb->is_shift_pressed()) { + panning.x += mb->get_factor() * scroll_vec.y; + panning.y += mb->get_factor() * scroll_vec.x; + } else { + panning.y += mb->get_factor() * scroll_vec.y; + panning.x += mb->get_factor() * scroll_vec.x; + } + callback_helper(scroll_callback, panning); + return true; + } else if (!mb->is_shift_pressed()) { + scroll_vec.y *= mb->get_factor(); + callback_helper(zoom_callback, scroll_vec, mb->get_position()); + return true; + } + } + } + + if (mb->get_button_index() == MouseButton::MIDDLE || (mb->get_button_index() == MouseButton::RIGHT && !disable_rmb) || (mb->get_button_index() == MouseButton::LEFT && (Input::get_singleton()->is_key_pressed(Key::SPACE) || (is_dragging && !mb->is_pressed())))) { + if (mb->is_pressed()) { + is_dragging = true; + } else { + is_dragging = false; + } + return true; + } + } + + Ref<InputEventMouseMotion> mm = p_event; + if (mm.is_valid()) { + if (is_dragging) { + if (p_canvas_rect != Rect2()) { + callback_helper(pan_callback, Input::get_singleton()->warp_mouse_motion(mm, p_canvas_rect)); + } else { + callback_helper(pan_callback, mm->get_relative()); + } + return true; + } + } + + return false; +} + +void ViewPanner::callback_helper(Callable p_callback, Vector2 p_arg1, Vector2 p_arg2) { + if (p_callback == zoom_callback) { + const Variant **argptr = (const Variant **)alloca(sizeof(Variant *) * 2); + Variant var1 = p_arg1; + argptr[0] = &var1; + Variant var2 = p_arg2; + argptr[1] = &var2; + + Variant result; + Callable::CallError ce; + p_callback.call(argptr, 2, result, ce); + } else { + const Variant **argptr = (const Variant **)alloca(sizeof(Variant *)); + Variant var = p_arg1; + argptr[0] = &var; + + Variant result; + Callable::CallError ce; + p_callback.call(argptr, 1, result, ce); + } +} + +void ViewPanner::set_callbacks(Callable p_scroll_callback, Callable p_pan_callback, Callable p_zoom_callback) { + scroll_callback = p_scroll_callback; + pan_callback = p_pan_callback; + zoom_callback = p_zoom_callback; +} + +void ViewPanner::set_control_scheme(ControlScheme p_scheme) { + control_scheme = p_scheme; +} + +void ViewPanner::set_disable_rmb(bool p_disable) { + disable_rmb = p_disable; +} |