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https://github.com/RGBCube/serenity
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4bf587811f
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.
118 lines
4.6 KiB
C++
118 lines
4.6 KiB
C++
/*
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* Copyright (c) 2022, Andrew Smith <andrew@alsmith.net>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ResizeImageDialog.h"
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#include <Applications/PixelPaint/ResizeImageDialogGML.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/CheckBox.h>
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#include <LibGUI/ComboBox.h>
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#include <LibGUI/Label.h>
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#include <LibGUI/RadioButton.h>
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#include <LibGUI/SpinBox.h>
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namespace PixelPaint {
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ResizeImageDialog::ResizeImageDialog(Gfx::IntSize const& suggested_size, GUI::Window* parent_window)
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: Dialog(parent_window)
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{
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m_desired_size.set_width(max(1, suggested_size.width()));
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m_desired_size.set_height(max(1, suggested_size.height()));
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m_starting_aspect_ratio = m_desired_size.width() / static_cast<float>(m_desired_size.height());
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set_title("Resize Image");
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resize(260, 228);
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set_icon(parent_window->icon());
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auto& main_widget = set_main_widget<GUI::Widget>();
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if (!main_widget.load_from_gml(resize_image_dialog_gml))
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VERIFY_NOT_REACHED();
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auto width_spinbox = main_widget.find_descendant_of_type_named<GUI::SpinBox>("width_spinbox");
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auto height_spinbox = main_widget.find_descendant_of_type_named<GUI::SpinBox>("height_spinbox");
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auto keep_aspect_ratio_checkbox = main_widget.find_descendant_of_type_named<GUI::CheckBox>("keep_aspect_ratio_checkbox");
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VERIFY(width_spinbox);
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VERIFY(height_spinbox);
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VERIFY(keep_aspect_ratio_checkbox);
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width_spinbox->set_value(m_desired_size.width());
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width_spinbox->on_change = [this, height_spinbox, keep_aspect_ratio_checkbox](int value) {
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if (keep_aspect_ratio_checkbox->is_checked()) {
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int desired_height = static_cast<int>(roundf(value / m_starting_aspect_ratio));
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height_spinbox->set_value(desired_height, GUI::AllowCallback::No);
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m_desired_size.set_height(height_spinbox->value());
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}
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m_desired_size.set_width(value);
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};
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height_spinbox->set_value(m_desired_size.height());
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height_spinbox->on_change = [this, width_spinbox, keep_aspect_ratio_checkbox](int value) {
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if (keep_aspect_ratio_checkbox->is_checked()) {
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int desired_width = static_cast<int>(roundf(value * m_starting_aspect_ratio));
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width_spinbox->set_value(desired_width, GUI::AllowCallback::No);
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m_desired_size.set_width(width_spinbox->value());
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}
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m_desired_size.set_height(value);
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};
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keep_aspect_ratio_checkbox->on_checked = [this, height_spinbox](bool is_checked) {
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if (is_checked) {
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int desired_height = static_cast<int>(roundf(m_desired_size.width() / m_starting_aspect_ratio));
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height_spinbox->set_value(desired_height, GUI::AllowCallback::No);
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m_desired_size.set_height(height_spinbox->value());
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}
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};
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auto nearest_neighbor_radio = main_widget.find_descendant_of_type_named<GUI::RadioButton>("nearest_neighbor_radio");
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auto smooth_pixels_radio = main_widget.find_descendant_of_type_named<GUI::RadioButton>("smooth_pixels_radio");
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auto bilinear_radio = main_widget.find_descendant_of_type_named<GUI::RadioButton>("bilinear_radio");
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auto resize_canvas_radio = main_widget.find_descendant_of_type_named<GUI::RadioButton>("resize_canvas");
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VERIFY(nearest_neighbor_radio);
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VERIFY(smooth_pixels_radio);
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VERIFY(bilinear_radio);
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VERIFY(resize_canvas_radio);
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m_scaling_mode = Gfx::Painter::ScalingMode::NearestNeighbor;
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if (bilinear_radio->is_checked()) {
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m_scaling_mode = Gfx::Painter::ScalingMode::BilinearBlend;
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}
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nearest_neighbor_radio->on_checked = [this](bool is_checked) {
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if (is_checked)
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m_scaling_mode = Gfx::Painter::ScalingMode::NearestNeighbor;
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};
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smooth_pixels_radio->on_checked = [this](bool is_checked) {
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if (is_checked)
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m_scaling_mode = Gfx::Painter::ScalingMode::SmoothPixels;
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};
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bilinear_radio->on_checked = [this](bool is_checked) {
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if (is_checked)
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m_scaling_mode = Gfx::Painter::ScalingMode::BilinearBlend;
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};
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resize_canvas_radio->on_checked = [this](bool is_checked) {
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if (is_checked)
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m_scaling_mode = Gfx::Painter::ScalingMode::None;
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};
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auto ok_button = main_widget.find_descendant_of_type_named<GUI::Button>("ok_button");
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auto cancel_button = main_widget.find_descendant_of_type_named<GUI::Button>("cancel_button");
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VERIFY(ok_button);
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VERIFY(cancel_button);
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ok_button->on_click = [this](auto) {
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done(ExecResult::OK);
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};
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ok_button->set_default(true);
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cancel_button->on_click = [this](auto) {
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done(ExecResult::Cancel);
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};
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}
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}
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