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PixelPaint: Add function to make layer from selection to ImageEditor

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Timothy Slater 2022-09-02 20:35:24 -05:00 • committed by Sam Atkins
parent 9d1336a1c9
commit e66763c223
2 changed files with 26 additions and 0 deletions
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25
Userland/Applications/PixelPaint/ImageEditor.cpp
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@ -3,6 +3,7 @@
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org> * Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2022, Mustafa Quraish <mustafa@serenityos.org> * Copyright (c) 2021-2022, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2021, David Isaksson <davidisaksson93@gmail.com> * Copyright (c) 2021, David Isaksson <davidisaksson93@gmail.com>
* Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
@ -427,6 +428,30 @@ void ImageEditor::set_active_layer(Layer* layer)
} }
} }
ErrorOr<void> ImageEditor::add_new_layer_from_selection()
{
auto current_layer_selection = image().selection();
if (current_layer_selection.is_empty())
return Error::from_string_literal("There is no active selection to create layer from.");
// save offsets of selection so we know where to place the new layer
auto selection_offset = current_layer_selection.bounding_rect().location();
auto selection_bitmap = active_layer()->try_copy_bitmap(current_layer_selection);
if (selection_bitmap.is_null())
return Error::from_string_literal("Unable to create bitmap from selection.");
auto layer_or_error = PixelPaint::Layer::try_create_with_bitmap(image(), selection_bitmap.release_nonnull(), "New Layer"sv);
if (layer_or_error.is_error())
return Error::from_string_literal("Unable to create layer from selection.");
auto new_layer = layer_or_error.release_value();
new_layer->set_location(selection_offset);
image().add_layer(new_layer);
layers_did_change();
return {};
}
void ImageEditor::set_active_tool(Tool* tool) void ImageEditor::set_active_tool(Tool* tool)
{ {
if (m_active_tool == tool) if (m_active_tool == tool)

1
Userland/Applications/PixelPaint/ImageEditor.h
View file

@ -38,6 +38,7 @@ public:
Layer* active_layer() { return m_active_layer; } Layer* active_layer() { return m_active_layer; }
void set_active_layer(Layer*); void set_active_layer(Layer*);
ErrorOr<void> add_new_layer_from_selection();
Tool* active_tool() { return m_active_tool; } Tool* active_tool() { return m_active_tool; }
void set_active_tool(Tool*); void set_active_tool(Tool*);
void update_tool_cursor(); void update_tool_cursor();