a808cfa75c
This patch replaces the concept of fixed resizees with opportunistic ones which use the new SpecialDimension::OpportunisticGrow UISize. This lets us simplify splitter resize code and take advantage of the layout system's automatic calculations for minimum size and expansion. Functionally the same as before, but fixes Splitter's unintended ability to grow window size.
104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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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/Widget.h>
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namespace GUI {
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class Splitter : public Widget {
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C_OBJECT(Splitter);
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public:
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enum class OpportunisticResizee {
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First,
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Second
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};
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virtual ~Splitter() override = default;
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protected:
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explicit Splitter(Gfx::Orientation);
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virtual void paint_event(PaintEvent&) override;
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virtual void resize_event(ResizeEvent&) override;
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virtual void mousedown_event(MouseEvent&) override;
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virtual void mousemove_event(MouseEvent&) override;
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virtual void mouseup_event(MouseEvent&) override;
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virtual void leave_event(Core::Event&) override;
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virtual void did_layout() override;
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virtual void custom_layout() override;
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OpportunisticResizee opportunisitic_resizee() const { return m_opportunistic_resizee; }
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void set_opportunisitic_resizee(OpportunisticResizee resizee) { m_opportunistic_resizee = resizee; }
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private:
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void override_cursor(bool do_override);
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Gfx::IntRect rect_between_widgets(GUI::Widget const& first_widget, GUI::Widget const& second_widget, bool honor_grabbable_margins) const;
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Gfx::Orientation m_orientation;
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bool m_resizing { false };
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bool m_overriding_cursor { false };
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Gfx::IntPoint m_resize_origin;
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WeakPtr<Widget> m_first_resizee;
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WeakPtr<Widget> m_second_resizee;
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Gfx::IntSize m_first_resizee_start_size;
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Gfx::IntSize m_second_resizee_start_size;
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OpportunisticResizee m_opportunistic_resizee { OpportunisticResizee::Second };
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size_t m_last_child_count { 0 };
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int m_first_resizee_max_size { 0 };
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int m_second_resizee_max_size { 0 };
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void recompute_grabbables();
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struct Grabbable {
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// Index in m_grabbables, for convenience.
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size_t index { 0 };
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// The full grabbable rect, includes the content margin of adjacent elements.
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Gfx::IntRect grabbable_rect;
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// The rect used for painting. Does not include content margins.
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Gfx::IntRect paint_rect;
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WeakPtr<Widget> first_widget;
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WeakPtr<Widget> second_widget;
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};
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Grabbable* grabbable_at(Gfx::IntPoint const&);
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void set_hovered_grabbable(Grabbable*);
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Vector<Grabbable> m_grabbables;
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Optional<size_t> m_hovered_index;
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};
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class VerticalSplitter final : public Splitter {
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C_OBJECT(VerticalSplitter)
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public:
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virtual ~VerticalSplitter() override = default;
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private:
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VerticalSplitter()
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: Splitter(Gfx::Orientation::Vertical)
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{
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}
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};
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class HorizontalSplitter final : public Splitter {
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C_OBJECT(HorizontalSplitter)
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public:
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virtual ~HorizontalSplitter() override = default;
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private:
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HorizontalSplitter()
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: Splitter(Gfx::Orientation::Horizontal)
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{
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}
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};
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}
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