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PixelPaint: Add asymmetric parameters to FastBoxBlur

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This allows the user to blur the image not uniformly, but to specify
different radii for the x and y component.
This commit is contained in:
Tobias Christiansen 2022-03-16 15:06:07 +01:00 • committed by Andreas Kling
parent 64cc482f8a
commit ffcc11c31b
2 changed files with 90 additions and 11 deletions
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86
Userland/Applications/PixelPaint/Filters/FastBoxBlur.cpp
View file

@ -7,6 +7,7 @@
#include "FastBoxBlur.h"
#include "../FilterParams.h"
#include <AK/ExtraMathConstants.h>
#include <LibGUI/Label.h>
#include <LibGUI/ValueSlider.h>
#include <LibGfx/Filters/FastBoxBlurFilter.h>
@ -23,6 +24,12 @@ void FastBoxBlur::apply(Gfx::Bitmap& target_bitmap, Gfx::Bitmap const& source_bi
}
Gfx::FastBoxBlurFilter filter(target_bitmap);
if (m_use_asymmetric_radii) {
filter.apply_single_pass(m_radius_x, m_radius_y);
return;
}
if (m_approximate_gauss)
filter.apply_three_passes(m_radius);
else
@ -38,18 +45,37 @@ RefPtr<GUI::Widget> FastBoxBlur::get_settings_widget()
auto& name_label = m_settings_widget->add<GUI::Label>("Fast Box Blur Filter");
name_label.set_font_weight(Gfx::FontWeight::Bold);
name_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
name_label.set_fixed_height(20);
name_label.set_fixed_height(10);
auto& radius_container = m_settings_widget->add<GUI::Widget>();
radius_container.set_fixed_height(20);
radius_container.set_layout<GUI::HorizontalBoxLayout>();
radius_container.layout()->set_margins({ 4, 0, 4, 0 });
auto& asymmetric_checkbox = m_settings_widget->add<GUI::CheckBox>("Use Asymmetric Radii");
asymmetric_checkbox.set_checked(false);
asymmetric_checkbox.set_fixed_height(15);
asymmetric_checkbox.on_checked = [&](bool checked) {
m_use_asymmetric_radii = checked;
if (m_use_asymmetric_radii) {
m_radius_x_slider->set_value(m_radius);
m_radius_y_slider->set_value(m_radius);
m_asymmetric_radius_container->set_visible(true);
m_radius_container->set_visible(false);
m_gaussian_checkbox->set_visible(false);
} else {
m_asymmetric_radius_container->set_visible(false);
m_radius_container->set_visible(true);
m_gaussian_checkbox->set_visible(true);
}
update_preview();
};
auto& radius_label = radius_container.add<GUI::Label>("Radius:");
m_radius_container = m_settings_widget->add<GUI::Widget>();
m_radius_container->set_fixed_height(20);
m_radius_container->set_layout<GUI::HorizontalBoxLayout>();
m_radius_container->layout()->set_margins({ 4, 0, 4, 0 });
auto& radius_label = m_radius_container->add<GUI::Label>("Radius:");
radius_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
radius_label.set_fixed_size(50, 20);
auto& radius_slider = radius_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
auto& radius_slider = m_radius_container->add<GUI::ValueSlider>(Orientation::Horizontal, "px");
radius_slider.set_range(0, 25);
radius_slider.set_value(m_radius);
radius_slider.on_change = [&](int value) {
@ -57,15 +83,53 @@ RefPtr<GUI::Widget> FastBoxBlur::get_settings_widget()
update_preview();
};
m_asymmetric_radius_container = m_settings_widget->add<GUI::Widget>();
m_asymmetric_radius_container->set_visible(false);
m_asymmetric_radius_container->set_fixed_height(50);
m_asymmetric_radius_container->set_layout<GUI::VerticalBoxLayout>();
m_asymmetric_radius_container->layout()->set_margins({ 4, 0, 4, 0 });
auto& radius_x_container = m_asymmetric_radius_container->add<GUI::Widget>();
radius_x_container.set_fixed_height(20);
radius_x_container.set_layout<GUI::HorizontalBoxLayout>();
auto& radius_x_label = radius_x_container.add<GUI::Label>("Radius X:");
radius_x_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
radius_x_label.set_fixed_size(50, 20);
m_radius_x_slider = radius_x_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
m_radius_x_slider->set_range(0, 50);
m_radius_x_slider->set_value(m_radius_x);
m_radius_x_slider->on_change = [&](int value) {
m_radius_x = value;
update_preview();
};
auto& radius_y_container = m_asymmetric_radius_container->add<GUI::Widget>();
radius_y_container.set_fixed_height(20);
radius_y_container.set_layout<GUI::HorizontalBoxLayout>();
auto& radius_y_label = radius_y_container.add<GUI::Label>("Radius Y:");
radius_y_label.set_text_alignment(Gfx::TextAlignment::CenterLeft);
radius_y_label.set_fixed_size(50, 20);
m_radius_y_slider = radius_y_container.add<GUI::ValueSlider>(Orientation::Horizontal, "px");
m_radius_y_slider->set_range(0, 50);
m_radius_y_slider->set_value(m_radius_y);
m_radius_y_slider->on_change = [&](int value) {
m_radius_y = value;
update_preview();
};
auto& gaussian_container = m_settings_widget->add<GUI::Widget>();
gaussian_container.set_fixed_height(20);
gaussian_container.set_layout<GUI::HorizontalBoxLayout>();
gaussian_container.layout()->set_margins({ 4, 0, 4, 0 });
auto& gaussian_checkbox = gaussian_container.add<GUI::CheckBox>("Approximate Gaussian Blur");
gaussian_checkbox.set_checked(m_approximate_gauss);
gaussian_checkbox.set_tooltip("A real gaussian blur can be approximated by running the box blur multiple times with different weights.");
gaussian_checkbox.on_checked = [this](bool checked) {
m_gaussian_checkbox = gaussian_container.add<GUI::CheckBox>("Approximate Gaussian Blur");
m_gaussian_checkbox->set_checked(m_approximate_gauss);
m_gaussian_checkbox->set_tooltip("A real gaussian blur can be approximated by running the box blur multiple times with different weights.");
m_gaussian_checkbox->on_checked = [this](bool checked) {
m_approximate_gauss = checked;
update_preview();
};

15
Userland/Applications/PixelPaint/Filters/FastBoxBlur.h
View file

@ -7,6 +7,7 @@
#pragma once
#include "Filter.h"
#include <LibGUI/ValueSlider.h>
namespace PixelPaint::Filters {
@ -22,7 +23,21 @@ public:
private:
size_t m_radius { 5 };
bool m_use_asymmetric_radii { false };
bool m_use_vector { false };
size_t m_radius_x { 0 };
size_t m_radius_y { 0 };
bool m_approximate_gauss { false };
RefPtr<GUI::Widget> m_radius_container { nullptr };
RefPtr<GUI::Widget> m_asymmetric_radius_container { nullptr };
RefPtr<GUI::CheckBox> m_gaussian_checkbox { nullptr };
RefPtr<GUI::ValueSlider> m_radius_x_slider { nullptr };
RefPtr<GUI::ValueSlider> m_radius_y_slider { nullptr };
RefPtr<GUI::ValueSlider> m_angle_slider { nullptr };
RefPtr<GUI::ValueSlider> m_magnitude_slider { nullptr };
};
}