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- // Copyright 2022 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 "ash/ambient/ui/ambient_animation_resizer.h"
- #include "base/check.h"
- #include "base/logging.h"
- #include "base/numerics/safe_conversions.h"
- #include "ui/gfx/geometry/rect.h"
- #include "ui/gfx/geometry/size.h"
- #include "ui/lottie/animation.h"
- #include "ui/views/controls/animated_image_view.h"
- namespace ash {
- // static
- void AmbientAnimationResizer::Resize(
- views::AnimatedImageView& animated_image_view,
- int padding_for_jitter) {
- DCHECK(animated_image_view.animated_image());
- DCHECK_GE(padding_for_jitter, 0);
- gfx::Size animation_size =
- animated_image_view.animated_image()->GetOriginalSize();
- DCHECK(!animation_size.IsEmpty());
- gfx::Rect destination_bounds = animated_image_view.GetContentsBounds();
- destination_bounds.Outset(padding_for_jitter);
- DCHECK(!destination_bounds.IsEmpty());
- gfx::Size animation_resized;
- float width_scale_factor =
- static_cast<float>(destination_bounds.width()) / animation_size.width();
- animation_resized.set_width(destination_bounds.width());
- // TODO(esum): Add metrics for the number of times the new scaled height
- // is less than the destination height. UX did not intend for this to
- // happen, so it's worth recording.
- animation_resized.set_height(
- base::ClampRound(animation_size.height() * width_scale_factor));
- animated_image_view.SetVerticalAlignment(
- views::ImageViewBase::Alignment::kCenter);
- animated_image_view.SetHorizontalAlignment(
- views::ImageViewBase::Alignment::kCenter);
- // The animation's new scaled size has been computed above.
- // AnimatedImageView::SetImageSize() takes care of both a) applying the
- // scaled size and b) cropping by translating the canvas before painting such
- // that the rescaled animation's origin resides outside the boundaries of the
- // view. The portions of the rescaled animation that reside outside of the
- // view's boundaries ultimately get cropped.
- animated_image_view.SetImageSize(animation_resized);
- }
- } // namespace ash
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