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LibWeb+LibGfx: Implement Canvas2D filters

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This commit is contained in:
Lucien Fiorini 2024-12-18 12:26:37 +01:00 • committed by Alexander Kalenik
commit a6ef6550f3
Notes: github-actions[bot] 2024-12-18 17:55:41 +00:00
10 changed files with 136 additions and 31 deletions
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13
Libraries/LibGfx/PainterSkia.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2024, Andreas Kling <andreas@ladybird.org>
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
* Copyright (c) 2024, Lucien Fiorini <lucienfiorini@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -8,6 +9,7 @@
#define AK_DONT_REPLACE_STD
#include <AK/OwnPtr.h>
#include <LibGfx/Filter.h>
#include <LibGfx/ImmutableBitmap.h>
#include <LibGfx/PainterSkia.h>
#include <LibGfx/PathSkia.h>
@ -128,9 +130,10 @@ void PainterSkia::fill_rect(Gfx::FloatRect const& rect, Color color)
impl().canvas()->drawRect(to_skia_rect(rect), paint);
}
void PainterSkia::draw_bitmap(Gfx::FloatRect const& dst_rect, Gfx::ImmutableBitmap const& src_bitmap, Gfx::IntRect const& src_rect, Gfx::ScalingMode scaling_mode, float global_alpha)
void PainterSkia::draw_bitmap(Gfx::FloatRect const& dst_rect, Gfx::ImmutableBitmap const& src_bitmap, Gfx::IntRect const& src_rect, Gfx::ScalingMode scaling_mode, ReadonlySpan<Gfx::Filter> filters, float global_alpha)
{
SkPaint paint;
apply_filters(paint, filters);
paint.setAlpha(static_cast<u8>(global_alpha * 255));
impl().canvas()->drawImageRect(
@ -183,14 +186,14 @@ void PainterSkia::stroke_path(Gfx::Path const& path, Gfx::Color color, float thi
impl().canvas()->drawPath(sk_path, paint);
}
void PainterSkia::stroke_path(Gfx::Path const& path, Gfx::PaintStyle const& paint_style, float thickness, float global_alpha)
void PainterSkia::stroke_path(Gfx::Path const& path, Gfx::PaintStyle const& paint_style, ReadonlySpan<Gfx::Filter> filters, float thickness, float global_alpha)
{
// Skia treats zero thickness as a special case and will draw a hairline, while we want to draw nothing.
if (thickness <= 0)
return;
auto sk_path = to_skia_path(path);
auto paint = to_skia_paint(paint_style, {});
auto paint = to_skia_paint(paint_style, filters);
paint.setAntiAlias(true);
paint.setAlphaf(global_alpha);
paint.setStyle(SkPaint::Style::kStroke_Style);
@ -219,11 +222,11 @@ void PainterSkia::fill_path(Gfx::Path const& path, Gfx::Color color, Gfx::Windin
impl().canvas()->drawPath(sk_path, paint);
}
void PainterSkia::fill_path(Gfx::Path const& path, Gfx::PaintStyle const& paint_style, float global_alpha, Gfx::WindingRule winding_rule)
void PainterSkia::fill_path(Gfx::Path const& path, Gfx::PaintStyle const& paint_style, ReadonlySpan<Gfx::Filter> filters, float global_alpha, Gfx::WindingRule winding_rule)
{
auto sk_path = to_skia_path(path);
sk_path.setFillType(to_skia_path_fill_type(winding_rule));
auto paint = to_skia_paint(paint_style, {});
auto paint = to_skia_paint(paint_style, filters);
paint.setAntiAlias(true);
paint.setAlphaf(global_alpha);
impl().canvas()->drawPath(sk_path, paint);