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/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
* Copyright (c) 2022, Timothy Slater <tslater2006@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "WandSelectTool.h"
#include "../ImageEditor.h"
#include "../Layer.h"
#include <AK/Queue.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
#include <LibGUI/ComboBox.h>
#include <LibGUI/ItemListModel.h>
#include <LibGUI/Label.h>
#include <LibGUI/Model.h>
#include <LibGUI/Painter.h>
#include <LibGUI/ValueSlider.h>
namespace PixelPaint {
static void set_flood_selection(Gfx::Bitmap& bitmap, Image& image, Gfx::IntPoint start_position, Gfx::IntRect layer_rect, int threshold, Selection::MergeMode merge_mode)
{
VERIFY(bitmap.bpp() == 32);
auto image_rect = image.rect();
auto mask_rect = layer_rect.intersected(image_rect);
auto selection_mask = Mask::empty(mask_rect);
auto pixel_reached = [&](Gfx::IntPoint location) {
auto point_to_set = layer_rect.top_left() + location;
if (selection_mask.bounding_rect().contains(point_to_set))
selection_mask.set(point_to_set, 0xFF);
};
bitmap.flood_visit_from_point(start_position, threshold, move(pixel_reached));
selection_mask.shrink_to_fit();
image.selection().merge(selection_mask, merge_mode);
}
bool WandSelectTool::on_keydown(GUI::KeyEvent& key_event)
{
if (key_event.key() == KeyCode::Key_Escape) {
m_editor->image().selection().clear();
return true;
}
return Tool::on_keydown(key_event);
}
void WandSelectTool::on_mousedown(Layer* layer, MouseEvent& event)
{
if (!layer)
return;
auto& layer_event = event.layer_event();
if (!layer->rect().contains(layer_event.position()))
return;
m_editor->image().selection().begin_interactive_selection();
set_flood_selection(layer->currently_edited_bitmap(), m_editor->image(), layer_event.position(), layer->relative_rect(), m_threshold, m_merge_mode);
m_editor->image().selection().end_interactive_selection();
m_editor->update();
m_editor->did_complete_action(tool_name());
}
ErrorOr<GUI::Widget*> WandSelectTool::get_properties_widget()
{
if (m_properties_widget) {
return m_properties_widget.ptr();
}
auto properties_widget = TRY(GUI::Widget::try_create());
(void)TRY(properties_widget->try_set_layout<GUI::VerticalBoxLayout>());
auto threshold_container = TRY(properties_widget->try_add<GUI::Widget>());
threshold_container->set_fixed_height(20);
(void)TRY(threshold_container->try_set_layout<GUI::HorizontalBoxLayout>());
auto threshold_label = TRY(threshold_container->try_add<GUI::Label>(TRY("Threshold:"_string)));
threshold_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
threshold_label->set_fixed_size(80, 20);
auto threshold_slider = TRY(threshold_container->try_add<GUI::ValueSlider>(Orientation::Horizontal, "%"_short_string));
threshold_slider->set_range(0, 100);
threshold_slider->set_value(m_threshold);
threshold_slider->on_change = [this](int value) {
m_threshold = value;
};
set_primary_slider(threshold_slider);
auto mode_container = TRY(properties_widget->try_add<GUI::Widget>());
mode_container->set_fixed_height(20);
(void)TRY(mode_container->try_set_layout<GUI::HorizontalBoxLayout>());
auto mode_label = TRY(mode_container->try_add<GUI::Label>());
mode_label->set_text("Mode:"_short_string);
mode_label->set_text_alignment(Gfx::TextAlignment::CenterLeft);
mode_label->set_fixed_size(80, 20);
for (int i = 0; i < (int)Selection::MergeMode::__Count; i++) {
switch ((Selection::MergeMode)i) {
case Selection::MergeMode::Set:
TRY(m_merge_mode_names.try_append("Set"));
break;
case Selection::MergeMode::Add:
TRY(m_merge_mode_names.try_append("Add"));
break;
case Selection::MergeMode::Subtract:
TRY(m_merge_mode_names.try_append("Subtract"));
break;
case Selection::MergeMode::Intersect:
TRY(m_merge_mode_names.try_append("Intersect"));
break;
default:
VERIFY_NOT_REACHED();
}
}
auto mode_combo = TRY(mode_container->try_add<GUI::ComboBox>());
mode_combo->set_only_allow_values_from_model(true);
mode_combo->set_model(*GUI::ItemListModel<DeprecatedString>::create(m_merge_mode_names));
mode_combo->set_selected_index((int)m_merge_mode);
mode_combo->on_change = [this](auto&&, GUI::ModelIndex const& index) {
VERIFY(index.row() >= 0);
VERIFY(index.row() < (int)Selection::MergeMode::__Count);
m_merge_mode = (Selection::MergeMode)index.row();
};
m_properties_widget = properties_widget;
return m_properties_widget.ptr();
}
}
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