ladybird/Userland/Libraries/LibGUI/HeaderView.h
thankyouverycool 3cc7862487 LibGUI: Support double-click resizing column headers
Columns can now be best-fit resized by double-clicking their
grabbable edges. When a default width is set and all data is empty,
double-clicking will restore the column to its original state.
2021-03-18 07:49:55 +01:00

110 lines
3.8 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibGUI/Widget.h>
#include <LibGfx/Orientation.h>
namespace GUI {
class HeaderView final : public Widget {
C_OBJECT(HeaderView);
public:
virtual ~HeaderView() override;
Gfx::Orientation orientation() const { return m_orientation; }
Model* model();
const Model* model() const;
void set_section_size(int section, int size);
int section_size(int section) const;
void set_default_section_size(int section, int size);
int default_section_size(int section) const;
bool is_default_section_size_initialized(int section) const;
Gfx::TextAlignment section_alignment(int section) const;
void set_section_alignment(int section, Gfx::TextAlignment);
bool is_section_visible(int section) const;
void set_section_visible(int section, bool);
int section_count() const;
Gfx::IntRect section_rect(int section) const;
Function<void(int section)> on_resize_doubleclick;
private:
HeaderView(AbstractTableView&, Gfx::Orientation);
virtual void paint_event(PaintEvent&) override;
virtual void mousedown_event(MouseEvent&) override;
virtual void mousemove_event(MouseEvent&) override;
virtual void mouseup_event(MouseEvent&) override;
virtual void doubleclick_event(MouseEvent&) override;
virtual void context_menu_event(ContextMenuEvent&) override;
virtual void leave_event(Core::Event&) override;
Gfx::IntRect section_resize_grabbable_rect(int) const;
void paint_horizontal(Painter&);
void paint_vertical(Painter&);
Menu& ensure_context_menu();
RefPtr<Menu> m_context_menu;
AbstractTableView& m_table_view;
Gfx::Orientation m_orientation { Gfx::Orientation::Horizontal };
struct SectionData {
int size { 0 };
int default_size { 0 };
bool has_initialized_size { false };
bool has_initialized_default_size { false };
bool visibility { true };
RefPtr<Action> visibility_action;
Gfx::TextAlignment alignment { Gfx::TextAlignment::CenterLeft };
};
SectionData& section_data(int section) const;
void set_hovered_section(int);
mutable Vector<SectionData> m_section_data;
bool m_in_section_resize { false };
Gfx::IntPoint m_section_resize_origin;
int m_section_resize_original_width { 0 };
int m_resizing_section { -1 };
int m_pressed_section { -1 };
bool m_pressed_section_is_pressed { false };
int m_hovered_section { -1 };
};
}