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285a888b61
A previous commit I made broke layer dragging since the hole_index was always being computed with respect to the top of the layer list widget, however we were now drawing layers from the bottom. When you didn't have enough layers to fill up the full height, dragging them around would be weird. This patch computes the hole index correctly using the same offset we start drawing from, and fixes the behavior.
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "Image.h"
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#include <LibGUI/AbstractScrollableWidget.h>
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namespace PixelPaint {
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class LayerListWidget final
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: public GUI::AbstractScrollableWidget
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, ImageClient {
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C_OBJECT(LayerListWidget);
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public:
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virtual ~LayerListWidget() override;
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void set_image(Image*);
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void set_selected_layer(Layer*);
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Function<void(Layer*)> on_layer_select;
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Function<void(GUI::ContextMenuEvent&)> on_context_menu_request;
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void select_bottom_layer();
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void select_top_layer();
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void cycle_through_selection(int delta);
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private:
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explicit LayerListWidget();
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virtual void paint_event(GUI::PaintEvent&) override;
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virtual void mousedown_event(GUI::MouseEvent&) override;
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virtual void mousemove_event(GUI::MouseEvent&) override;
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virtual void mouseup_event(GUI::MouseEvent&) override;
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virtual void context_menu_event(GUI::ContextMenuEvent&) override;
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virtual void resize_event(GUI::ResizeEvent&) override;
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virtual void image_did_add_layer(size_t) override;
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virtual void image_did_remove_layer(size_t) override;
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virtual void image_did_modify_layer_properties(size_t) override;
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virtual void image_did_modify_layer_bitmap(size_t) override;
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virtual void image_did_modify_layer_stack() override;
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void rebuild_gadgets();
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void relayout_gadgets();
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size_t hole_index_during_move() const;
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struct Gadget {
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size_t layer_index { 0 };
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Gfx::IntRect rect;
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bool is_moving { false };
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Gfx::IntPoint movement_delta;
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};
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void get_gadget_rects(Gadget const&, Gfx::IntRect& outer_rect, Gfx::IntRect& thumbnail_rect, Gfx::IntRect& text_rect);
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bool is_moving_gadget() const { return m_moving_gadget_index.has_value(); }
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Optional<size_t> gadget_at(Gfx::IntPoint const&);
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size_t to_layer_index(size_t gadget_index) const;
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size_t to_gadget_index(size_t layer_index) const;
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Vector<Gadget> m_gadgets;
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RefPtr<Image> m_image;
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Optional<size_t> m_moving_gadget_index;
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Gfx::IntPoint m_moving_event_origin;
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size_t m_selected_gadget_index { 0 };
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int m_total_gadget_height { 0 };
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};
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}
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