21fcafe605
After 2D canvas stops using Gfx::Painter as its drawing backend, the base Painter interface only needs to describe bitmap compositing work that still happens outside PainterSkia. Narrow the interface to clear_rect, fill_rect and draw_bitmap, which covers GIF/APNG frame compositing, CSS cursor bitmap painting, canvas readback and the Android UI blit.
35 lines
1.4 KiB
C++
35 lines
1.4 KiB
C++
/*
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/PainterSkia.h>
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#include <LibGfx/VectorGraphic.h>
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namespace Gfx {
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ErrorOr<NonnullRefPtr<Gfx::Bitmap>> VectorGraphic::bitmap(IntSize size, AffineTransform transform) const
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{
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auto bitmap = TRY(Bitmap::create(Gfx::BitmapFormat::BGRA8888, size));
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auto painter = make<PainterSkia>(PaintingSurface::wrap_bitmap(bitmap));
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// Apply the transform then center within destination rectangle (this ignores any translation from the transform):
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// This allows you to easily rotate or flip the image before painting.
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auto transformed_rect = transform.map(FloatRect { {}, this->size() });
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auto scale = min(float(size.width()) / transformed_rect.width(), float(size.height()) / transformed_rect.height());
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auto centered = FloatRect { {}, transformed_rect.size().scaled(scale) }.centered_within(IntRect { {}, size }.to_type<float>());
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auto view_transform = AffineTransform {}
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.translate(centered.location())
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.multiply(AffineTransform {}.scale(scale, scale))
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.multiply(AffineTransform {}.translate(-transformed_rect.location()))
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.multiply(transform);
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painter->set_transform(view_transform);
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draw(*painter);
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return bitmap;
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}
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}
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