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LibGfx: Introduce a new Gfx::Painter with a Skia backend

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This new painter is written with a virtual interface from the start,
and we begin with a Skia backend.

This patch adds enough to support our basic 2D HTML canvas usecase.
This commit is contained in:
Andreas Kling 2024-07-05 15:36:55 +02:00 • committed by Andreas Kling
commit de50d27870
Notes: github-actions[bot] 2024-08-20 07:38:27 +00:00
10 changed files with 507 additions and 78 deletions
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10
Userland/Libraries/LibWeb/HTML/Canvas/CanvasTransform.h
View file

@ -9,6 +9,7 @@
#pragma once
#include <AK/Debug.h>
#include <LibGfx/Painter.h>
#include <LibWeb/Geometry/DOMMatrix.h>
#include <LibWeb/HTML/Canvas/CanvasState.h>
@ -71,6 +72,8 @@ public:
// 2. Reset the current transformation matrix to the identity matrix.
my_drawing_state().transform = {};
if (auto* painter = static_cast<IncludingClass&>(*this).painter())
painter->set_transform({});
// 3. Invoke the transform(a, b, c, d, e, f) method with the same arguments.
transform(a, b, c, d, e, f);
@ -88,7 +91,10 @@ public:
return {};
// 3. Reset the current transformation matrix to matrix.
my_drawing_state().transform = { static_cast<float>(matrix->a()), static_cast<float>(matrix->b()), static_cast<float>(matrix->c()), static_cast<float>(matrix->d()), static_cast<float>(matrix->e()), static_cast<float>(matrix->f()) };
auto transform = Gfx::AffineTransform { static_cast<float>(matrix->a()), static_cast<float>(matrix->b()), static_cast<float>(matrix->c()), static_cast<float>(matrix->d()), static_cast<float>(matrix->e()), static_cast<float>(matrix->f()) };
my_drawing_state().transform = transform;
if (auto* painter = static_cast<IncludingClass&>(*this).painter())
painter->set_transform(transform);
return {};
}
@ -97,6 +103,8 @@ public:
{
// The resetTransform() method, when invoked, must reset the current transformation matrix to the identity matrix.
my_drawing_state().transform = {};
if (auto* painter = static_cast<IncludingClass&>(*this).painter())
painter->set_transform({});
}
protected: