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86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
// Aseprite UI Library
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// Copyright (C) 2019 Igara Studio S.A.
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// Copyright (C) 2001-2017 David Capello
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//
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// This file is released under the terms of the MIT license.
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// Read LICENSE.txt for more information.
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#ifndef UI_VIEW_H_INCLUDED
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#define UI_VIEW_H_INCLUDED
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#pragma once
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#include "gfx/point.h"
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#include "gfx/size.h"
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#include "ui/scroll_bar.h"
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#include "ui/viewport.h"
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#include "ui/widget.h"
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namespace ui {
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class ScrollRegionEvent;
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class ViewableWidget {
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public:
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virtual ~ViewableWidget() { }
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virtual void onScrollRegion(ScrollRegionEvent& ev) = 0;
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};
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class View : public Widget
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, public ScrollableViewDelegate {
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public:
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View();
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bool hasScrollBars();
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ScrollBar* horizontalBar() { return &m_scrollbar_h; }
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ScrollBar* verticalBar() { return &m_scrollbar_v; }
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void attachToView(Widget* viewableWidget);
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Widget* attachedWidget();
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void hideScrollBars();
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void showScrollBars();
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void makeVisibleAllScrollableArea();
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// Returns the maximum viewable size requested by the attached
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// widget in the viewport.
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gfx::Size getScrollableSize() const;
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void setScrollableSize(const gfx::Size& sz,
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const bool setScrollPos = true);
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// Returns the visible/available size to see the attached widget.
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gfx::Size visibleSize() const override;
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gfx::Point viewScroll() const override;
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void setViewScroll(const gfx::Point& pt) override;
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void updateView(const bool restoreScrollPos = true);
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Viewport* viewport();
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gfx::Rect viewportBounds();
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// For viewable widgets
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static View* getView(const Widget* viewableWidget);
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protected:
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// Events
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bool onProcessMessage(Message* msg) override;
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void onInitTheme(InitThemeEvent& ev) override;
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void onResize(ResizeEvent& ev) override;
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void onSizeHint(SizeHintEvent& ev) override;
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virtual void onSetViewScroll(const gfx::Point& pt);
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virtual void onScrollRegion(ScrollRegionEvent& ev);
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virtual void onScrollChange();
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private:
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void updateAttachedWidgetBounds(const gfx::Point& scrollPos);
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gfx::Point limitScrollPosToViewport(const gfx::Point& pt) const;
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bool m_hasBars;
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Viewport m_viewport;
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ScrollBar m_scrollbar_h;
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ScrollBar m_scrollbar_v;
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};
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} // namespace ui
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#endif
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