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ladybird/Userland/Libraries/LibGUI/ColumnsView.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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/*
Meta: Claim copyright for files created by me This changes copyright holder to myself for the source code files that I've created or have (almost) completely rewritten. Not included are the files that were significantly changed by others even though it was me who originally created them (think HtmlView), or the many other files I've contributed code to.
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* Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
Libraries: Use default constructors/destructors in LibGUI https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
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* Copyright (c) 2022, the SerenityOS developers.
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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*/
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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#pragma once
#include <AK/Vector.h>
LibGUI: Remove leading G from filenames
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#include <LibGUI/AbstractView.h>
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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LibGUI: Put all classes in the GUI namespace and remove the leading G This took me a moment. Welcome to the new world of GUI::Widget! :^)
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namespace GUI {
class ColumnsView : public AbstractView {
C_OBJECT(ColumnsView)
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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public:
int model_column() const { return m_model_column; }
void set_model_column(int column) { m_model_column = column; }
Everywhere: Run clang-format
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virtual ModelIndex index_at_event_position(Gfx::IntPoint const&) const override;
virtual Gfx::IntRect content_rect(ModelIndex const&) const override;
LibGUI: Tighten paint invalidation rects in item views :^) AbstractView now has a paint_invalidation_rect(index) function that subclasses can override to provide a tighter invalidation rect for an index.
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virtual Gfx::IntRect paint_invalidation_rect(ModelIndex const&) const override;
LibGUI: Move index_at_event_position() up to GAbstractView It's now an abstract (pure virtual) public method in GAbstractView that individual widgets have to implement. This will allow us to move more selection-related logic into GAbstractView in order to share it between implementations.
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LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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private:
LibGUI: Remove parent parameter to GUI::Widget constructor
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ColumnsView();
Libraries: Use default constructors/destructors in LibGUI https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
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virtual ~ColumnsView() override = default;
Everywhere: Run clang-format
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void push_column(ModelIndex const& parent_index);
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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void update_column_sizes();
LibGUI: Increase row height in Table/ColumnViews and center icons 16x16 icons are now guaranteed at least 1px margins between rows
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int item_height() const { return 18; }
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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int icon_size() const { return 16; }
int icon_spacing() const { return 2; }
int text_padding() const { return 2; }
LibGUI: Remove `AbstractView::did_update_model()' ...and use `ModelClient::model_did_update()' instead. This makes AbstractView a ModelClient (which it always was anyway).
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virtual void model_did_update(unsigned flags) override;
LibGUI: Implement basic rubber band selections in ColumnsView This patch adds the ability to select multiple entries in a column using a rubber band selection. Currently the implementation is lacking support for expanding a selection using the ctrl modifier.
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virtual void second_paint_event(PaintEvent&) override;
LibGUI: Put all classes in the GUI namespace and remove the leading G This took me a moment. Welcome to the new world of GUI::Widget! :^)
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virtual void paint_event(PaintEvent&) override;
virtual void mousedown_event(MouseEvent& event) override;
LibGUI: Implement basic rubber band selections in ColumnsView This patch adds the ability to select multiple entries in a column using a rubber band selection. Currently the implementation is lacking support for expanding a selection using the ctrl modifier.
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virtual void mousemove_event(MouseEvent&) override;
virtual void mouseup_event(MouseEvent&) override;
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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LibGUI: Properly handle range selections in ColumnsView Previously we would always select the left most column when selecting a range of rows. This patch fixes this issue by always applying a selection to the column in which the selection ends.
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virtual void select_range(ModelIndex const&) override;
LibGUI: Implement move_cursor() in ColumnsView
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void move_cursor(CursorMovement, SelectionUpdate) override;
LibGUI: Make descendants of AbstractView define their own select_all() (#1201) AbstractView does not know which column it's displaying which makes it impossible to implement the select_all functionality up there. Now descendants override the pure virtual select_all method and implement it themselves.
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virtual void select_all() override;
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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struct Column {
LibGUI: Put all classes in the GUI namespace and remove the leading G This took me a moment. Welcome to the new world of GUI::Widget! :^)
2020-02-02 11:07:41 -03:00
ModelIndex parent_index;
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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int width;
// TODO: per-column vertical scroll?
};
LibGUI: Add granular ColumnView helpers for column and index at events This patch extracts logic for getting colum at an event position and for getting an index in a column at an event position from index_at_event_position into separate functions.
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Optional<Column> column_at_event_position(Gfx::IntPoint const&) const;
ModelIndex index_at_event_position_in_column(Gfx::IntPoint const&, Column const&) const;
LibGUI: Implement basic rubber band selections in ColumnsView This patch adds the ability to select multiple entries in a column using a rubber band selection. Currently the implementation is lacking support for expanding a selection using the ctrl modifier.
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bool m_rubber_banding { false };
int m_rubber_band_origin { 0 };
Column m_rubber_band_origin_column;
int m_rubber_band_current { 0 };
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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Vector<Column> m_columns;
LibGUI: Fix missing initializer for GColumnsView::m_model_column
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int m_model_column { 0 };
LibGUI: Add GColumnsView This is a shiny new widget that can display a tree using Miller columns ^:) In many cases, the columns view can be used as an alternative to tree view, but it has its own set of limitations: * It can only display one model column (so it cannot replace a table) * It takes up a lot of horizontal space, so it's only suitable if the item text is fairly short * It can only display one subtree at a time But as long as a usecase doesn't suffer from these limitations, a columns view can be *much* more intuitive than a tree view.
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};
LibGUI: Put all classes in the GUI namespace and remove the leading G This took me a moment. Welcome to the new world of GUI::Widget! :^)
2020-02-02 11:07:41 -03:00
}
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