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Diffstat (limited to 'Libraries/LibGUI/ItemView.h')
-rw-r--r-- | Libraries/LibGUI/ItemView.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Libraries/LibGUI/ItemView.h b/Libraries/LibGUI/ItemView.h new file mode 100644 index 0000000000..08900cdb30 --- /dev/null +++ b/Libraries/LibGUI/ItemView.h @@ -0,0 +1,86 @@ +/* + * Copyright (c) 2018-2020, 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 <AK/Function.h> +#include <AK/HashMap.h> +#include <LibGUI/AbstractView.h> +#include <LibGUI/Model.h> + +namespace GUI { + +class ScrollBar; +class Painter; + +class ItemView : public AbstractView { + C_OBJECT(ItemView) +public: + virtual ~ItemView() override; + + int content_width() const; + int horizontal_padding() const { return m_horizontal_padding; } + + void scroll_into_view(const ModelIndex&, Orientation); + Gfx::Size effective_item_size() const { return m_effective_item_size; } + + int model_column() const { return m_model_column; } + void set_model_column(int column) { m_model_column = column; } + + virtual ModelIndex index_at_event_position(const Gfx::Point&) const override; + +private: + explicit ItemView(Widget* parent); + + virtual void did_update_model() override; + virtual void paint_event(PaintEvent&) override; + virtual void second_paint_event(PaintEvent&) override; + virtual void resize_event(ResizeEvent&) override; + virtual void mousedown_event(MouseEvent&) override; + virtual void mousemove_event(MouseEvent&) override; + virtual void mouseup_event(MouseEvent&) override; + virtual void keydown_event(KeyEvent&) override; + + int item_count() const; + Gfx::Rect item_rect(int item_index) const; + Vector<int> items_intersecting_rect(const Gfx::Rect&) const; + void update_content_size(); + void get_item_rects(int item_index, const Gfx::Font&, const Variant& item_text, Gfx::Rect& item_rect, Gfx::Rect& icon_rect, Gfx::Rect& text_rect) const; + + int m_horizontal_padding { 5 }; + int m_model_column { 0 }; + int m_visual_column_count { 0 }; + int m_visual_row_count { 0 }; + + Gfx::Size m_effective_item_size { 80, 80 }; + + bool m_rubber_banding { false }; + Gfx::Point m_rubber_band_origin; + Gfx::Point m_rubber_band_current; + Vector<ModelIndex> m_rubber_band_remembered_selection; +}; + +} |