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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_CONTROLS_IMAGE_VIEW_BASE_H_
#define UI_VIEWS_CONTROLS_IMAGE_VIEW_BASE_H_
#include <optional>
#include <string>
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/views/metadata/view_factory.h"
#include "ui/views/view.h"
namespace views {
class VIEWS_EXPORT ImageViewBase : public View {
METADATA_HEADER(ImageViewBase, View)
public:
enum class Alignment { kLeading, kCenter, kTrailing };
ImageViewBase();
ImageViewBase(const ImageViewBase&) = delete;
ImageViewBase& operator=(const ImageViewBase&) = delete;
~ImageViewBase() override;
// Set the desired image size for the receiving ImageView.
void SetImageSize(const gfx::Size& image_size);
// Returns the actual bounds of the visible image inside the view.
gfx::Rect GetImageBounds() const;
// Reset the image size to the current image dimensions.
void ResetImageSize();
// Set / Get the horizontal alignment.
void SetHorizontalAlignment(Alignment ha);
Alignment GetHorizontalAlignment() const;
// Set / Get the vertical alignment.
void SetVerticalAlignment(Alignment va);
Alignment GetVerticalAlignment() const;
void OnTooltipTextChanged(const std::u16string& old_tooltip_text) override;
// Overridden from View:
void AdjustAccessibleName(std::u16string& new_name,
ax::mojom::NameFrom& name_from) override;
gfx::Size CalculatePreferredSize(
const SizeBounds& /*available_size*/) const override;
views::PaintInfo::ScaleType GetPaintScaleType() const override;
void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
void PreferredSizeChanged() override;
protected:
// Returns the size the image will be painted.
virtual gfx::Size GetImageSize() const = 0;
// The requested image size.
std::optional<gfx::Size> image_size_;
private:
friend class ImageViewTest;
// Recomputes and updates the |image_origin_|.
void UpdateImageOrigin();
// The origin of the image.
gfx::Point image_origin_;
// Horizontal alignment.
Alignment horizontal_alignment_ = Alignment::kCenter;
// Vertical alignment.
Alignment vertical_alignment_ = Alignment::kCenter;
// The current tooltip text.
std::u16string tooltip_text_;
};
BEGIN_VIEW_BUILDER(VIEWS_EXPORT, ImageViewBase, View)
VIEW_BUILDER_PROPERTY(gfx::Size, ImageSize)
VIEW_BUILDER_PROPERTY(ImageViewBase::Alignment, HorizontalAlignment)
VIEW_BUILDER_PROPERTY(ImageViewBase::Alignment, VerticalAlignment)
VIEW_BUILDER_PROPERTY(std::u16string, TooltipText)
END_VIEW_BUILDER
} // namespace views
DEFINE_VIEW_BUILDER(VIEWS_EXPORT, ImageViewBase)
#endif // UI_VIEWS_CONTROLS_IMAGE_VIEW_BASE_H_
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