RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-25 19:37:35 +00:00
Code Issues Activity Actions

LibGfx: Add Painter::get_pixel()

Browse source 
This is required to do some painting tricks in LibWeb, this has to be
added to the painter so it can apply the paint translation first.
This commit is contained in:
MacDue 2022-06-15 21:05:58 +01:00 • committed by Linus Groh
parent 4f311d1660
commit 81a3ec0692
2 changed files with 20 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

29
Userland/Libraries/LibGfx/Painter.cpp
View file

@ -1205,37 +1205,37 @@ void Painter::draw_scaled_bitmap(IntRect const& a_dst_rect, Gfx::Bitmap const& s
if (source.has_alpha_channel() || opacity != 1.0f) {
switch (source.format()) {
case BitmapFormat::BGRx8888:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::BGRx8888>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::BGRx8888>, opacity, scaling_mode);
break;
case BitmapFormat::BGRA8888:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::BGRA8888>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::BGRA8888>, opacity, scaling_mode);
break;
case BitmapFormat::Indexed8:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Indexed8>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Indexed8>, opacity, scaling_mode);
break;
case BitmapFormat::Indexed4:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Indexed4>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Indexed4>, opacity, scaling_mode);
break;
case BitmapFormat::Indexed2:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Indexed2>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Indexed2>, opacity, scaling_mode);
break;
case BitmapFormat::Indexed1:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Indexed1>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Indexed1>, opacity, scaling_mode);
break;
default:
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Invalid>, opacity, scaling_mode);
do_draw_scaled_bitmap<true>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Invalid>, opacity, scaling_mode);
break;
}
} else {
switch (source.format()) {
case BitmapFormat::BGRx8888:
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::BGRx8888>, opacity, scaling_mode);
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::BGRx8888>, opacity, scaling_mode);
break;
case BitmapFormat::Indexed8:
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Indexed8>, opacity, scaling_mode);
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Indexed8>, opacity, scaling_mode);
break;
default:
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, get_pixel<BitmapFormat::Invalid>, opacity, scaling_mode);
do_draw_scaled_bitmap<false>(*m_target, dst_rect, clipped_rect, source, src_rect, Gfx::get_pixel<BitmapFormat::Invalid>, opacity, scaling_mode);
break;
}
}
@ -1725,6 +1725,15 @@ void Painter::set_pixel(IntPoint const& p, Color color, bool blend)
}
}
Optional<Color> Painter::get_pixel(IntPoint const& p)
{
auto point = p;
point.translate_by(state().translation);
if (!clip_rect().contains(point / scale()))
return {};
return Color::from_argb(m_target->scanline(point.y())[point.x()]);
}
ALWAYS_INLINE void Painter::set_physical_pixel_with_draw_op(u32& pixel, Color const& color)
{
// This always sets a single physical pixel, independent of scale().