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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/macros.h"
#include "base/optional.h"
#include "ui/views/view.h"
namespace gfx {
class Canvas;
namespace views {
class VIEWS_EXPORT ImageViewBase : public View {
enum Alignment { LEADING, CENTER, TRAILING };
~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;
// Set / Get the tooltip text.
void set_tooltip_text(const base::string16& tooltip) {
tooltip_text_ = tooltip;
const base::string16& tooltip_text() const { return tooltip_text_; }
// Set / Get the accessible name text.
void SetAccessibleName(const base::string16& name);
const base::string16& GetAccessibleName() const;
// Overridden from View:
void OnPaint(gfx::Canvas* canvas) override = 0;
void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
const char* GetClassName() const override = 0;
bool GetTooltipText(const gfx::Point& p,
base::string16* tooltip) const override;
gfx::Size CalculatePreferredSize() const override;
views::PaintInfo::ScaleType GetPaintScaleType() const override;
void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
void PreferredSizeChanged() override;
// Returns the size the image will be painted.
virtual gfx::Size GetImageSize() const = 0;
// The requested image size.
base::Optional<gfx::Size> image_size_;
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::CENTER;
// Vertical alignment.
Alignment vertical_alignment_ = Alignment::CENTER;
// The current tooltip text.
base::string16 tooltip_text_;
// The current accessible name text.
base::string16 accessible_name_;
} // namespace views