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LibGfx: Add apply_alpha option to Painter::blit_filtered()

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MacDue 2023-07-29 19:33:53 +01:00 committed by Andreas Kling
parent 0ef0ad04e1
commit 3e6ca1085c
Notes: sideshowbarker 2024-07-17 07:09:53 +09:00 
Author: https://github.com/MacDue
Commit: https://github.com/SerenityOS/serenity/commit/3e6ca1085c
Pull-request: https://github.com/SerenityOS/serenity/pull/20254
2 changed files with 4 additions and 4 deletions
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6
Userland/Libraries/LibGfx/Painter.cpp
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@ -934,7 +934,7 @@ void Painter::blit_with_opacity(IntPoint position, Gfx::Bitmap const& source, In
}
}
void Painter::blit_filtered(IntPoint position, Gfx::Bitmap const& source, IntRect const& src_rect, Function<Color(Color)> const& filter)
void Painter::blit_filtered(IntPoint position, Gfx::Bitmap const& source, IntRect const& src_rect, Function<Color(Color)> const& filter, bool apply_alpha)
{
VERIFY((source.scale() == 1 || source.scale() == scale()) && "blit_filtered only supports integer upsampling");
@ -969,7 +969,7 @@ void Painter::blit_filtered(IntPoint position, Gfx::Bitmap const& source, IntRec
if (source_color.alpha() == 0)
continue;
auto filtered_color = filter(source_color);
if (filtered_color.alpha() == 0xff)
if (!apply_alpha || filtered_color.alpha() == 0xff)
dst[x] = filtered_color.value();
else
dst[x] = color_for_format(dst_format, dst[x]).blend(filtered_color).value();
@ -985,7 +985,7 @@ void Painter::blit_filtered(IntPoint position, Gfx::Bitmap const& source, IntRec
if (source_color.alpha() == 0)
continue;
auto filtered_color = filter(source_color);
if (filtered_color.alpha() == 0xff)
if (!apply_alpha || filtered_color.alpha() == 0xff)
dst[x] = filtered_color.value();
else
dst[x] = color_for_format(dst_format, dst[x]).blend(filtered_color).value();

2
Userland/Libraries/LibGfx/Painter.h
View file

@ -84,7 +84,7 @@ public:
void blit(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, float opacity = 1.0f, bool apply_alpha = true);
void blit_dimmed(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect);
void blit_brightened(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect);
void blit_filtered(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, Function<Color(Color)> const&);
void blit_filtered(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, Function<Color(Color)> const&, bool apply_alpha = true);
void draw_tiled_bitmap(IntRect const& dst_rect, Gfx::Bitmap const&);
void blit_offset(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, IntPoint);
void blit_disabled(IntPoint, Gfx::Bitmap const&, IntRect const&, Palette const&);