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PixelPaint+LibGfx: Allow resizing images and layers

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This PR adds resize ability to PixelPaint as per issue 11862.
The previous behaviour was to always rescale the canvas when
resizing an image. This adds a checkbox to toggle between
rescaling, and resizing which blits the existing canvas to
the top left of the new, resized canvas.

As part of this, a new ScalingMode is added to
LibGfx - None.
This commit is contained in:
jack gleeson 2022-10-10 12:54:06 -07:00 • committed by Sam Atkins
parent d6334dcab1
commit 4bf587811f
6 changed files with 35 additions and 3 deletions
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13
Userland/Applications/PixelPaint/Layer.cpp
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@ -230,7 +230,11 @@ void Layer::resize(Gfx::IntSize const& new_size, Gfx::IntPoint const& new_locati
auto dst = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRA8888, new_size).release_value_but_fixme_should_propagate_errors();
Gfx::Painter painter(dst);
painter.draw_scaled_bitmap(dst_rect, *m_content_bitmap, src_rect, 1.0f, scaling_mode);
if (scaling_mode == Gfx::Painter::ScalingMode::None) {
painter.blit(src_rect.top_left(), *m_content_bitmap, src_rect, 1.0f);
} else {
painter.draw_scaled_bitmap(dst_rect, *m_content_bitmap, src_rect, 1.0f, scaling_mode);
}
m_content_bitmap = move(dst);
}
@ -239,7 +243,12 @@ void Layer::resize(Gfx::IntSize const& new_size, Gfx::IntPoint const& new_locati
auto dst = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRA8888, new_size).release_value_but_fixme_should_propagate_errors();
Gfx::Painter painter(dst);
painter.draw_scaled_bitmap(dst_rect, *m_mask_bitmap, src_rect, 1.0f, scaling_mode);
if (scaling_mode == Gfx::Painter::ScalingMode::None) {
painter.blit(src_rect.top_left(), *m_content_bitmap, src_rect, 1.0f);
} else {
painter.draw_scaled_bitmap(dst_rect, *m_mask_bitmap, src_rect, 1.0f, scaling_mode);
}
m_mask_bitmap = move(dst);
}