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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/message_center/views/large_image_view.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/image_skia_operations.h"
#include "ui/message_center/views/notification_view_base.h"
#include "ui/message_center/views/notification_view_util.h"
#if !BUILDFLAG(IS_CHROMEOS)
#include "ui/views/background.h"
#endif // !BUILDFLAG(IS_CHROMEOS)
namespace message_center {
LargeImageView::LargeImageView(const gfx::Size& max_size)
: max_size_(max_size), min_size_(max_size_.width(), /*height=*/0) {
SetID(NotificationViewBase::kLargeImageView);
#if !BUILDFLAG(IS_CHROMEOS)
SetBackground(
views::CreateSolidBackground(ui::kColorNotificationImageBackground));
#endif // !BUILDFLAG(IS_CHROMEOS)
}
LargeImageView::~LargeImageView() = default;
void LargeImageView::OnBoundsChanged(const gfx::Rect& previous_bounds) {
if (!original_image_.isNull() && size() != previous_bounds.size()) {
drawn_image_ = CalculateDrawnImage();
}
}
void LargeImageView::OnPaint(gfx::Canvas* canvas) {
views::View::OnPaint(canvas);
if (!drawn_image_.isNull()) {
gfx::Rect drawn_bounds = GetContentsBounds();
drawn_bounds.ClampToCenteredSize(drawn_image_.size());
canvas->DrawImageInt(drawn_image_, drawn_bounds.x(), drawn_bounds.y());
}
}
void LargeImageView::SetImage(const gfx::ImageSkia& image) {
DCHECK(!image.isNull());
original_image_ = image;
drawn_image_ = CalculateDrawnImage();
gfx::Size preferred_size = CalculateResizedImageSizeForWidth();
preferred_size.SetToMax(min_size_);
preferred_size.SetToMin(max_size_);
SetPreferredSize(preferred_size);
SchedulePaint();
}
gfx::Size LargeImageView::CalculateResizedImageSizeForWidth() const {
DCHECK(!original_image_.isNull());
gfx::Size original_size = original_image_.size();
if (original_size.width() <= max_size_.width()) {
return original_image_.size();
}
const double proportion =
original_size.height() / static_cast<double>(original_size.width());
gfx::Size resized_size;
resized_size.SetSize(max_size_.width(), max_size_.width() * proportion);
return resized_size;
}
gfx::ImageSkia LargeImageView::CalculateDrawnImage() const {
DCHECK(!original_image_.isNull());
// Resize `image` so that the image width does not exceed the restriction.
const gfx::ImageSkia resized_image =
gfx::ImageSkiaOperations::CreateResizedImage(
original_image_, skia::ImageOperations::RESIZE_BEST,
CalculateResizedImageSizeForWidth());
// The height of the image could still be larger than that of `max_size`.
// Therefore, cap the image size with `max_size`.
gfx::Size clamed_size = resized_image.size();
clamed_size.SetToMin(max_size_);
// Crop out the image to draw.
clamed_size.SetToMin(GetContentsBounds().size());
const gfx::ImageSkia cropped_image = gfx::ImageSkiaOperations::ExtractSubset(
resized_image, gfx::Rect(clamed_size));
if (const std::optional<size_t> corner_radius =
notification_view_util::GetLargeImageCornerRadius()) {
// Return the cropped image decorated with rounded corners if necessary.
return gfx::ImageSkiaOperations::CreateImageWithRoundRectClip(
*corner_radius, cropped_image);
}
return cropped_image;
}
BEGIN_METADATA(LargeImageView)
END_METADATA
} // namespace message_center
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