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https://github.com/LadybirdBrowser/ladybird.git
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d28fb8926f
There are quite a few tools that might want to change certain values based on consistent keyboard shortcuts. This commit allows tools to hook up a "primary" and "secondary" slider with the base `Tool` class, which can then handle updating those sliders with the common shortcuts. Note that any derived classes that want to override the `on_keydown` function will manually need to call `Tool::on_keydown()`.
86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGUI/Event.h>
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#include <LibGUI/Forward.h>
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#include <LibGUI/ValueSlider.h>
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#include <LibGfx/StandardCursor.h>
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namespace PixelPaint {
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class ImageEditor;
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class Layer;
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class Tool {
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public:
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virtual ~Tool();
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class MouseEvent {
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public:
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enum class Action {
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MouseDown,
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MouseMove,
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MouseUp
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};
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MouseEvent(Action action, GUI::MouseEvent& layer_event, GUI::MouseEvent& image_event, GUI::MouseEvent& raw_event)
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: m_action(action)
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, m_layer_event(layer_event)
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, m_image_event(image_event)
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, m_raw_event(raw_event)
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{
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}
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Action action() const { return m_action; }
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GUI::MouseEvent const& layer_event() const { return m_layer_event; }
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GUI::MouseEvent const& image_event() const { return m_image_event; }
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GUI::MouseEvent const& raw_event() const { return m_raw_event; }
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private:
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Action m_action;
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GUI::MouseEvent& m_layer_event;
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GUI::MouseEvent& m_image_event;
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GUI::MouseEvent& m_raw_event;
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};
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virtual void on_mousedown(Layer*, MouseEvent&) { }
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virtual void on_mousemove(Layer*, MouseEvent&) { }
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virtual void on_mouseup(Layer*, MouseEvent&) { }
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virtual void on_context_menu(Layer*, GUI::ContextMenuEvent&) { }
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virtual void on_tool_button_contextmenu(GUI::ContextMenuEvent&) { }
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virtual void on_second_paint(Layer const*, GUI::PaintEvent&) { }
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virtual void on_keydown(GUI::KeyEvent&);
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virtual void on_keyup(GUI::KeyEvent&) { }
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virtual void on_tool_activation() { }
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virtual GUI::Widget* get_properties_widget() { return nullptr; }
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virtual Gfx::StandardCursor cursor() { return Gfx::StandardCursor::None; }
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void clear() { m_editor = nullptr; }
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void setup(ImageEditor&);
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ImageEditor const* editor() const { return m_editor; }
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ImageEditor* editor() { return m_editor; }
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GUI::Action* action() { return m_action; }
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void set_action(GUI::Action*);
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protected:
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Tool();
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WeakPtr<ImageEditor> m_editor;
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RefPtr<GUI::Action> m_action;
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void set_primary_slider(GUI::ValueSlider* primary) { m_primary_slider = primary; }
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void set_secondary_slider(GUI::ValueSlider* secondary) { m_secondary_slider = secondary; }
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GUI::ValueSlider* m_primary_slider { nullptr };
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GUI::ValueSlider* m_secondary_slider { nullptr };
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};
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}
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