| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/platform/graphics/crossfade_generated_image.h" |
| |
| #include "third_party/blink/renderer/platform/graphics/graphics_context.h" |
| #include "third_party/blink/renderer/platform/graphics/paint/paint_canvas.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| |
| namespace blink { |
| |
| CrossfadeGeneratedImage::CrossfadeGeneratedImage( |
| scoped_refptr<Image> from_image, |
| scoped_refptr<Image> to_image, |
| float percentage, |
| const gfx::SizeF& size) |
| : GeneratedImage(size), |
| from_image_(std::move(from_image)), |
| to_image_(std::move(to_image)), |
| percentage_(percentage) {} |
| |
| void CrossfadeGeneratedImage::DrawCrossfade( |
| cc::PaintCanvas* canvas, |
| const cc::PaintFlags& flags, |
| const ImageDrawOptions& draw_options) { |
| gfx::RectF from_image_rect(gfx::SizeF(from_image_->Size())); |
| gfx::RectF to_image_rect(gfx::SizeF(to_image_->Size())); |
| gfx::RectF dest_rect(size_); |
| |
| // TODO(junov): The various effects encoded into paint should probably be |
| // applied here instead of inside the layer. This probably faulty behavior |
| // was maintained in order to preserve pre-existing behavior while refactoring |
| // this code. This should be investigated further. crbug.com/472634 |
| cc::PaintFlags layer_flags; |
| layer_flags.setBlendMode(flags.getBlendMode()); |
| PaintCanvasAutoRestore ar(canvas, false); |
| canvas->saveLayer(layer_flags); |
| |
| cc::PaintFlags image_flags(flags); |
| image_flags.setBlendMode(SkBlendMode::kSrcOver); |
| image_flags.setColor(ScaleAlpha(flags.getColor(), 1 - percentage_)); |
| // TODO(junov): This code should probably be propagating the |
| // RespectImageOrientationEnum from CrossfadeGeneratedImage::draw(). Code |
| // was written this way during refactoring to avoid modifying existing |
| // behavior, but this warrants further investigation. crbug.com/472634 |
| ImageDrawOptions from_draw_options(draw_options); |
| from_draw_options.respect_orientation = kDoNotRespectImageOrientation; |
| from_image_->Draw(canvas, image_flags, dest_rect, from_image_rect, |
| from_draw_options); |
| image_flags.setBlendMode(SkBlendMode::kPlus); |
| image_flags.setColor(ScaleAlpha(flags.getColor(), percentage_)); |
| to_image_->Draw(canvas, image_flags, dest_rect, to_image_rect, draw_options); |
| } |
| |
| void CrossfadeGeneratedImage::Draw(cc::PaintCanvas* canvas, |
| const cc::PaintFlags& flags, |
| const gfx::RectF& dst_rect, |
| const gfx::RectF& src_rect, |
| const ImageDrawOptions& draw_options) { |
| // Draw nothing if either of the images hasn't loaded yet. |
| if (from_image_ == Image::NullImage() || to_image_ == Image::NullImage()) |
| return; |
| |
| PaintCanvasAutoRestore ar(canvas, true); |
| SkRect src_sk_rect = gfx::RectFToSkRect(src_rect); |
| SkRect dst_sk_rect = gfx::RectFToSkRect(dst_rect); |
| canvas->clipRect(dst_sk_rect); |
| canvas->concat(SkM44::RectToRect(src_sk_rect, dst_sk_rect)); |
| DrawCrossfade(canvas, flags, draw_options); |
| } |
| |
| void CrossfadeGeneratedImage::DrawTile(cc::PaintCanvas* canvas, |
| const gfx::RectF& src_rect, |
| const ImageDrawOptions& options) { |
| // Draw nothing if either of the images hasn't loaded yet. |
| if (from_image_ == Image::NullImage() || to_image_ == Image::NullImage()) |
| return; |
| cc::PaintFlags flags; |
| flags.setAntiAlias(true); |
| DrawCrossfade(canvas, flags, options); |
| } |
| |
| } // namespace blink |