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PixelPaint: Add function to visualize editing-masks
This patch adds a function to make the editing-eask visible while beeing in mask-mode so that the user can see which parts are covered by the masks and can therefore be modified by other tools that support editing masks.
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6 changed files with 76 additions and 0 deletions
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@ -8,9 +8,11 @@
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#include "Layer.h"
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#include "Image.h"
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#include "ImageEditor.h"
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#include "Selection.h"
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#include <AK/RefPtr.h>
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#include <AK/Try.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Painter.h>
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@ -45,6 +47,7 @@ ErrorOr<NonnullRefPtr<Layer>> Layer::create_snapshot(Image& image, Layer const&
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snapshot->m_mask_bitmap = TRY(layer.mask_bitmap()->clone());
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snapshot->m_edit_mode = layer.m_edit_mode;
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snapshot->m_mask_type = layer.m_mask_type;
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snapshot->m_visible_mask = layer.m_visible_mask;
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}
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/*
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@ -322,6 +325,7 @@ void Layer::delete_mask()
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{
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m_mask_bitmap = nullptr;
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m_mask_type = MaskType::None;
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m_visible_mask = false;
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set_edit_mode(EditMode::Content);
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update_cached_bitmap();
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}
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@ -464,4 +468,35 @@ Layer::MaskType Layer::mask_type()
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return m_mask_type;
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}
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void Layer::on_second_paint(ImageEditor& editor)
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{
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if (!m_visible_mask || edit_mode() != EditMode::Mask)
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return;
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auto visible_rect = editor.active_layer_visible_rect();
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if (visible_rect.width() == 0 || visible_rect.height() == 0)
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return;
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GUI::Painter painter(editor);
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painter.translate(visible_rect.location());
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auto content_offset = editor.content_to_frame_position(location());
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auto drawing_cursor_offset = visible_rect.location() - content_offset.to_type<int>();
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Gfx::Color editing_mask_color = editor.primary_color();
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int mask_alpha;
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Gfx::IntPoint mask_coordinates;
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for (int y = 0; y < visible_rect.height(); y++) {
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for (int x = 0; x < visible_rect.width(); x++) {
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mask_coordinates = (Gfx::FloatPoint(drawing_cursor_offset.x() + x, drawing_cursor_offset.y() + y) / editor.scale()).to_type<int>();
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mask_alpha = mask_bitmap()->get_pixel(mask_coordinates).alpha();
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if (!mask_alpha)
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continue;
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painter.set_pixel(x, y, editing_mask_color.with_alpha(mask_alpha), true);
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}
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}
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}
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}
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