44e371635e
This patch introduces the HeaderView class, which is a widget that implements the column headers of TableView and TreeView. This greatly simplifies event management in the view implementations and also makes it much easier to eventually implement row headers.
116 lines
4.4 KiB
C++
116 lines
4.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibGUI/AbstractView.h>
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namespace GUI {
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class TableCellPaintingDelegate {
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public:
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virtual ~TableCellPaintingDelegate() { }
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virtual void paint(Painter&, const Gfx::IntRect&, const Gfx::Palette&, const ModelIndex&) = 0;
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};
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class AbstractTableView : public AbstractView {
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public:
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int item_height() const { return 16; }
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bool alternating_row_colors() const { return m_alternating_row_colors; }
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void set_alternating_row_colors(bool b) { m_alternating_row_colors = b; }
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bool highlight_selected_rows() const { return m_highlight_selected_rows; }
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void set_highlight_selected_rows(bool b) { m_highlight_selected_rows = b; }
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bool column_headers_visible() const;
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void set_column_headers_visible(bool);
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void set_column_hidden(int, bool);
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int column_width(int column) const;
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void set_column_width(int column, int width);
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Gfx::TextAlignment column_header_alignment(int column) const;
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void set_column_header_alignment(int column, Gfx::TextAlignment);
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void set_cell_painting_delegate(int column, OwnPtr<TableCellPaintingDelegate>);
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int horizontal_padding() const { return m_horizontal_padding; }
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Gfx::IntPoint adjusted_position(const Gfx::IntPoint&) const;
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virtual Gfx::IntRect content_rect(const ModelIndex&) const override;
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Gfx::IntRect content_rect(int row, int column) const;
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Gfx::IntRect row_rect(int item_index) const;
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void scroll_into_view(const ModelIndex&, Orientation);
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void scroll_into_view(const ModelIndex&, bool scroll_horizontally, bool scroll_vertically);
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virtual ModelIndex index_at_event_position(const Gfx::IntPoint&, bool& is_toggle) const;
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virtual ModelIndex index_at_event_position(const Gfx::IntPoint&) const override;
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virtual void select_all() override;
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void move_selection(int vertical_steps, int horizontal_steps);
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void header_did_change_section_visibility(Badge<HeaderView>, Gfx::Orientation, int section, bool visible);
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void header_did_change_section_size(Badge<HeaderView>, Gfx::Orientation, int section, int size);
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virtual void did_scroll() override;
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protected:
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virtual ~AbstractTableView() override;
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AbstractTableView();
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virtual void mousedown_event(MouseEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void context_menu_event(ContextMenuEvent&) override;
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virtual void resize_event(ResizeEvent&) override;
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virtual void did_update_model(unsigned flags) override;
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virtual void toggle_index(const ModelIndex&) { }
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void update_content_size();
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virtual void update_column_sizes();
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virtual int item_count() const;
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TableCellPaintingDelegate* column_painting_delegate(int column) const;
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HeaderView& column_header() { return *m_column_header; }
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const HeaderView& column_header() const { return *m_column_header; }
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private:
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RefPtr<HeaderView> m_column_header;
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HashMap<int, OwnPtr<TableCellPaintingDelegate>> m_column_painting_delegate;
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bool m_alternating_row_colors { true };
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bool m_highlight_selected_rows { true };
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int m_horizontal_padding { 5 };
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};
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}
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