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Libraries: Move to Userland/Libraries/
This commit is contained in:
Andreas Kling
parent
dc28c07fa5
commit
13d7c09125
1857 changed files with 266 additions and 274 deletions
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/*
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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 <AK/IterationDecision.h>
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#include <LibGUI/AbstractView.h>
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#include <LibGUI/Forward.h>
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#include <LibGUI/Variant.h>
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namespace GUI {
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class IconView : public AbstractView {
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C_OBJECT(IconView)
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public:
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virtual ~IconView() override;
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enum class FlowDirection {
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LeftToRight,
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TopToBottom,
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};
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FlowDirection flow_direction() const { return m_flow_direction; }
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void set_flow_direction(FlowDirection);
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int content_width() const;
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int horizontal_padding() const { return m_horizontal_padding; }
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virtual void scroll_into_view(const ModelIndex&, bool scroll_horizontally = true, bool scroll_vertically = true) override;
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Gfx::IntSize effective_item_size() const { return m_effective_item_size; }
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int model_column() const { return m_model_column; }
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void set_model_column(int column) { m_model_column = column; }
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virtual ModelIndex index_at_event_position(const Gfx::IntPoint&) const override;
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virtual Gfx::IntRect content_rect(const ModelIndex&) const override;
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virtual void select_all() override;
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private:
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IconView();
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virtual void model_did_update(unsigned flags) override;
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virtual void paint_event(PaintEvent&) override;
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virtual void second_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 did_change_hovered_index(const ModelIndex& old_index, const ModelIndex& new_index) override;
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virtual void did_change_cursor_index(const ModelIndex& old_index, const ModelIndex& new_index) override;
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virtual void move_cursor(CursorMovement, SelectionUpdate) override;
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struct ItemData {
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Gfx::IntRect text_rect;
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Gfx::IntRect icon_rect;
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int icon_offset_y;
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int text_offset_y;
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String text;
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Vector<StringView> wrapped_text_lines;
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ModelIndex index;
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bool valid { false };
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bool selected { false }; // always valid
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bool selection_toggled; // only used as a temporary marker
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bool is_valid() const { return valid; }
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void invalidate()
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{
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valid = false;
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text = {};
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}
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bool is_intersecting(const Gfx::IntRect& rect) const
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{
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ASSERT(valid);
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return icon_rect.intersects(rect) || text_rect.intersects(rect);
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}
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bool is_containing(const Gfx::IntPoint& point) const
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{
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ASSERT(valid);
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return icon_rect.contains(point) || text_rect.contains(point);
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}
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};
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template<typename Function>
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IterationDecision for_each_item_intersecting_rect(const Gfx::IntRect&, Function) const;
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template<typename Function>
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IterationDecision for_each_item_intersecting_rects(const Vector<Gfx::IntRect>&, Function) const;
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void column_row_from_content_position(const Gfx::IntPoint& content_position, int& row, int& column) const
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{
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row = max(0, min(m_visual_row_count - 1, content_position.y() / effective_item_size().height()));
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column = max(0, min(m_visual_column_count - 1, content_position.x() / effective_item_size().width()));
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}
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int item_count() const;
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Gfx::IntRect item_rect(int item_index) const;
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void update_content_size();
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void update_item_rects(int item_index, ItemData& item_data) const;
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void get_item_rects(int item_index, ItemData& item_data, const Gfx::Font&) const;
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bool update_rubber_banding(const Gfx::IntPoint&);
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void scroll_out_of_view_timer_fired();
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int items_per_page() const;
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void reinit_item_cache() const;
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int model_index_to_item_index(const ModelIndex& model_index) const
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{
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ASSERT(model_index.row() < item_count());
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return model_index.row();
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}
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virtual void did_update_selection() override;
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virtual void clear_selection() override;
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virtual void add_selection(const ModelIndex& new_index) override;
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virtual void set_selection(const ModelIndex& new_index) override;
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virtual void toggle_selection(const ModelIndex& new_index) override;
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ItemData& get_item_data(int) const;
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ItemData* item_data_from_content_position(const Gfx::IntPoint&) const;
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void do_clear_selection();
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bool do_add_selection(ItemData&);
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void add_selection(ItemData&);
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void remove_selection(ItemData&);
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void toggle_selection(ItemData&);
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int m_horizontal_padding { 5 };
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int m_model_column { 0 };
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int m_visual_column_count { 0 };
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int m_visual_row_count { 0 };
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Gfx::IntSize m_effective_item_size { 80, 80 };
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bool m_rubber_banding { false };
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bool m_rubber_banding_store_selection { false };
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RefPtr<Core::Timer> m_out_of_view_timer;
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Gfx::IntPoint m_out_of_view_position;
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Gfx::IntPoint m_rubber_band_origin;
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Gfx::IntPoint m_rubber_band_current;
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FlowDirection m_flow_direction { FlowDirection::LeftToRight };
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mutable Vector<ItemData> m_item_data_cache;
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mutable int m_selected_count_cache { 0 };
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mutable int m_first_selected_hint { 0 };
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mutable bool m_item_data_cache_valid { false };
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bool m_changing_selection { false };
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};
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}
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