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7652dbd983
As a heuristic, either the width or height of the scaled image should decrease for box sampling to be used. Otherwise, we use bilinear scaling.
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Painting/CanvasPaintable.h>
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namespace Web::Painting {
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JS::NonnullGCPtr<CanvasPaintable> CanvasPaintable::create(Layout::CanvasBox const& layout_box)
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{
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return layout_box.heap().allocate_without_realm<CanvasPaintable>(layout_box);
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}
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CanvasPaintable::CanvasPaintable(Layout::CanvasBox const& layout_box)
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: PaintableBox(layout_box)
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{
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}
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Layout::CanvasBox const& CanvasPaintable::layout_box() const
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{
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return static_cast<Layout::CanvasBox const&>(layout_node());
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}
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void CanvasPaintable::paint(PaintContext& context, PaintPhase phase) const
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{
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if (!layout_box().is_visible())
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return;
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PaintableBox::paint(context, phase);
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if (phase == PaintPhase::Foreground) {
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auto canvas_rect = context.rounded_device_rect(absolute_rect());
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ScopedCornerRadiusClip corner_clip { context, context.painter(), canvas_rect, normalized_border_radii_data(ShrinkRadiiForBorders::Yes) };
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// FIXME: This should be done at a different level.
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if (is_out_of_view(context))
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return;
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if (layout_box().dom_node().bitmap()) {
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// FIXME: Remove this const_cast.
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const_cast<HTML::HTMLCanvasElement&>(layout_box().dom_node()).present();
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auto scaling_mode = to_gfx_scaling_mode(computed_values().image_rendering(), layout_box().dom_node().bitmap()->rect(), canvas_rect.to_type<int>());
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context.painter().draw_scaled_bitmap(canvas_rect.to_type<int>(), *layout_box().dom_node().bitmap(), layout_box().dom_node().bitmap()->rect(), 1.0f, scaling_mode);
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}
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}
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}
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}
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