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serenity/Userland/Applications/PixelPaint/MainWidget.cpp
Mustafa Quraish 5c763e9832 LibGUI+PixelPaint: Move fit_image_to_view to AbstractZoomPanWidget 
We often want to zoom and fit the content of the widget into the
visible frame (or some rect within the frame), and it makes sense to
move this functionality into the AbstractZoomPanWidget to minimize
the amount of coordinate math derived classes need to do.

This commit moves the code that implements this functionality from
`PixelPaint::ImageEditor` into `AbstractZoomPanWidget` so that we
can also use it for other applications (such as ImageViewer!)
2022-02-14 11:49:21 +01:00

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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Mustafa Quraish <mustafa@serenityos.org>
* Copyright (c) 2021-2022, Tobias Christiansen <tobyase@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MainWidget.h"
#include "CreateNewImageDialog.h"
#include "CreateNewLayerDialog.h"
#include "EditGuideDialog.h"
#include "FilterGallery.h"
#include "FilterParams.h"
#include <Applications/PixelPaint/PixelPaintWindowGML.h>
#include <LibConfig/Client.h>
#include <LibCore/File.h>
#include <LibCore/MimeData.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGUI/Application.h>
#include <LibGUI/Clipboard.h>
#include <LibGUI/Icon.h>
#include <LibGUI/ItemListModel.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Toolbar.h>
#include <LibGUI/Window.h>
#include <LibGfx/Rect.h>
namespace PixelPaint {
IconBag g_icon_bag;
MainWidget::MainWidget()
: Widget()
{
load_from_gml(pixel_paint_window_gml);
m_toolbox = find_descendant_of_type_named<PixelPaint::ToolboxWidget>("toolbox");
m_statusbar = *find_descendant_of_type_named<GUI::Statusbar>("statusbar");
m_tab_widget = find_descendant_of_type_named<GUI::TabWidget>("tab_widget");
m_tab_widget->set_container_margins({ 4, 5, 5, 4 });
m_tab_widget->set_reorder_allowed(true);
m_tab_widget->set_close_button_enabled(true);
m_palette_widget = *find_descendant_of_type_named<PixelPaint::PaletteWidget>("palette_widget");
m_layer_list_widget = *find_descendant_of_type_named<PixelPaint::LayerListWidget>("layer_list_widget");
m_layer_list_widget->on_layer_select = [&](auto* layer) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_active_layer(layer);
};
m_layer_properties_widget = *find_descendant_of_type_named<PixelPaint::LayerPropertiesWidget>("layer_properties_widget");
m_tool_properties_widget = *find_descendant_of_type_named<PixelPaint::ToolPropertiesWidget>("tool_properties_widget");
m_toolbox->on_tool_selection = [&](auto* tool) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_active_tool(tool);
m_tool_properties_widget->set_active_tool(tool);
};
m_tab_widget->on_middle_click = [&](auto& widget) {
m_tab_widget->on_tab_close_click(widget);
};
m_tab_widget->on_tab_close_click = [&](auto& widget) {
auto& image_editor = verify_cast<PixelPaint::ImageEditor>(widget);
if (image_editor.request_close()) {
m_tab_widget->deferred_invoke([&] {
m_tab_widget->remove_tab(image_editor);
if (m_tab_widget->children().size() == 0) {
m_layer_list_widget->set_image(nullptr);
m_layer_properties_widget->set_layer(nullptr);
m_palette_widget->set_image_editor(nullptr);
m_tool_properties_widget->set_enabled(false);
set_actions_enabled(false);
}
});
}
};
m_tab_widget->on_change = [&](auto& widget) {
auto& image_editor = verify_cast<PixelPaint::ImageEditor>(widget);
m_palette_widget->set_image_editor(&image_editor);
m_layer_list_widget->set_image(&image_editor.image());
m_layer_properties_widget->set_layer(image_editor.active_layer());
if (auto* active_tool = m_toolbox->active_tool())
image_editor.set_active_tool(active_tool);
m_show_guides_action->set_checked(image_editor.guide_visibility());
m_show_rulers_action->set_checked(image_editor.ruler_visibility());
image_editor.on_scale_change(image_editor.scale());
};
}
// Note: Update these together! v
static const Vector<String> s_suggested_zoom_levels { "25%", "50%", "100%", "200%", "300%", "400%", "800%", "1600%", "Fit to width", "Fit to height", "Fit entire image" };
static constexpr int s_zoom_level_fit_width = 8;
static constexpr int s_zoom_level_fit_height = 9;
static constexpr int s_zoom_level_fit_image = 10;
// Note: Update these together! ^
void MainWidget::initialize_menubar(GUI::Window& window)
{
auto& file_menu = window.add_menu("&File");
m_new_image_action = GUI::Action::create(
"&New Image...", { Mod_Ctrl, Key_N }, g_icon_bag.filetype_pixelpaint, [&](auto&) {
auto dialog = PixelPaint::CreateNewImageDialog::construct(&window);
if (dialog->exec() == GUI::Dialog::ExecOK) {
auto image = PixelPaint::Image::try_create_with_size(dialog->image_size()).release_value_but_fixme_should_propagate_errors();
auto bg_layer = PixelPaint::Layer::try_create_with_size(*image, image->size(), "Background").release_value_but_fixme_should_propagate_errors();
image->add_layer(*bg_layer);
bg_layer->bitmap().fill(Color::White);
auto& editor = create_new_editor(*image);
auto image_title = dialog->image_name().trim_whitespace();
editor.set_title(image_title.is_empty() ? "Untitled" : image_title);
editor.undo_stack().set_current_unmodified();
m_layer_list_widget->set_image(image);
m_layer_list_widget->set_selected_layer(bg_layer);
}
});
m_new_image_from_clipboard_action = GUI::Action::create(
"&New Image from Clipboard", { Mod_Ctrl | Mod_Shift, Key_V }, g_icon_bag.new_clipboard, [&](auto&) {
create_image_from_clipboard();
});
m_open_image_action = GUI::CommonActions::make_open_action([&](auto&) {
auto response = FileSystemAccessClient::Client::the().try_open_file(&window);
if (response.is_error())
return;
open_image(response.value());
});
m_save_image_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->save_project_as();
});
m_save_image_action = GUI::CommonActions::make_save_action([&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->save_project();
});
file_menu.add_action(*m_new_image_action);
file_menu.add_action(*m_new_image_from_clipboard_action);
file_menu.add_action(*m_open_image_action);
file_menu.add_action(*m_save_image_action);
file_menu.add_action(*m_save_image_as_action);
m_export_submenu = file_menu.add_submenu("&Export");
m_export_submenu->add_action(
GUI::Action::create(
"As &BMP", [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto response = FileSystemAccessClient::Client::the().try_save_file(&window, "untitled", "bmp");
if (response.is_error())
return;
auto preserve_alpha_channel = GUI::MessageBox::show(&window, "Do you wish to preserve transparency?", "Preserve transparency?", GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
auto result = editor->image().export_bmp_to_file(response.value(), preserve_alpha_channel == GUI::MessageBox::ExecYes);
if (result.is_error())
GUI::MessageBox::show_error(&window, String::formatted("Export to BMP failed: {}", result.error()));
}));
m_export_submenu->add_action(
GUI::Action::create(
"As &PNG", [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
// TODO: fix bmp on line below?
auto response = FileSystemAccessClient::Client::the().try_save_file(&window, "untitled", "png");
if (response.is_error())
return;
auto preserve_alpha_channel = GUI::MessageBox::show(&window, "Do you wish to preserve transparency?", "Preserve transparency?", GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
auto result = editor->image().export_png_to_file(response.value(), preserve_alpha_channel == GUI::MessageBox::ExecYes);
if (result.is_error())
GUI::MessageBox::show_error(&window, String::formatted("Export to PNG failed: {}", result.error()));
}));
m_export_submenu->set_icon(g_icon_bag.file_export);
file_menu.add_separator();
m_close_image_action = GUI::Action::create("&Close Image", { Mod_Ctrl, Key_W }, g_icon_bag.close_image, [&](auto&) {
auto* active_widget = m_tab_widget->active_widget();
VERIFY(active_widget);
m_tab_widget->on_tab_close_click(*active_widget);
});
file_menu.add_action(*m_close_image_action);
file_menu.add_action(GUI::CommonActions::make_quit_action([this](auto&) {
if (request_close())
GUI::Application::the()->quit();
}));
m_edit_menu = window.add_menu("&Edit");
m_copy_action = GUI::CommonActions::make_copy_action([&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
if (!editor->active_layer()) {
dbgln("Cannot copy with no active layer selected");
return;
}
auto bitmap = editor->active_layer()->try_copy_bitmap(editor->selection());
if (!bitmap) {
dbgln("try_copy_bitmap() from Layer failed");
return;
}
GUI::Clipboard::the().set_bitmap(*bitmap);
});
m_copy_merged_action = GUI::Action::create(
"Copy &Merged", { Mod_Ctrl | Mod_Shift, Key_C }, g_icon_bag.edit_copy, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto bitmap = editor->image().try_copy_bitmap(editor->selection());
if (!bitmap) {
dbgln("try_copy_bitmap() from Image failed");
return;
}
GUI::Clipboard::the().set_bitmap(*bitmap);
});
m_paste_action = GUI::CommonActions::make_paste_action([&](auto&) {
auto* editor = current_image_editor();
if (!editor) {
create_image_from_clipboard();
return;
}
auto bitmap = GUI::Clipboard::the().fetch_data_and_type().as_bitmap();
if (!bitmap)
return;
auto layer = PixelPaint::Layer::try_create_with_bitmap(editor->image(), *bitmap, "Pasted layer").release_value_but_fixme_should_propagate_errors();
editor->image().add_layer(*layer);
editor->set_active_layer(layer);
editor->selection().clear();
});
GUI::Clipboard::the().on_change = [&](auto& mime_type) {
m_paste_action->set_enabled(mime_type == "image/x-serenityos");
};
m_paste_action->set_enabled(GUI::Clipboard::the().fetch_mime_type() == "image/x-serenityos");
m_undo_action = GUI::CommonActions::make_undo_action([&](auto&) {
if (auto* editor = current_image_editor())
editor->undo();
});
m_redo_action = GUI::CommonActions::make_redo_action([&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->redo();
});
m_edit_menu->add_action(*m_copy_action);
m_edit_menu->add_action(*m_copy_merged_action);
m_edit_menu->add_action(*m_paste_action);
m_edit_menu->add_action(*m_undo_action);
m_edit_menu->add_action(*m_redo_action);
m_edit_menu->add_separator();
m_edit_menu->add_action(GUI::CommonActions::make_select_all_action([&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
if (!editor->active_layer())
return;
editor->selection().merge(editor->active_layer()->relative_rect(), PixelPaint::Selection::MergeMode::Set);
}));
m_edit_menu->add_action(GUI::Action::create(
"Clear &Selection", g_icon_bag.clear_selection, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->selection().clear();
}));
m_edit_menu->add_separator();
m_edit_menu->add_action(GUI::Action::create(
"S&wap Colors", { Mod_None, Key_X }, g_icon_bag.swap_colors, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto old_primary_color = editor->primary_color();
editor->set_primary_color(editor->secondary_color());
editor->set_secondary_color(old_primary_color);
}));
m_edit_menu->add_action(GUI::Action::create(
"&Default Colors", { Mod_None, Key_D }, g_icon_bag.default_colors, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_primary_color(Color::Black);
editor->set_secondary_color(Color::White);
}));
m_edit_menu->add_action(GUI::Action::create(
"&Load Color Palette", g_icon_bag.load_color_palette, [&](auto&) {
auto response = FileSystemAccessClient::Client::the().try_open_file(&window, "Load Color Palette");
if (response.is_error())
return;
auto result = PixelPaint::PaletteWidget::load_palette_file(*response.value());
if (result.is_error()) {
GUI::MessageBox::show_error(&window, String::formatted("Loading color palette failed: {}", result.error()));
return;
}
m_palette_widget->display_color_list(result.value());
}));
m_edit_menu->add_action(GUI::Action::create(
"Sa&ve Color Palette", g_icon_bag.save_color_palette, [&](auto&) {
auto response = FileSystemAccessClient::Client::the().try_save_file(&window, "untitled", "palette");
if (response.is_error())
return;
auto result = PixelPaint::PaletteWidget::save_palette_file(m_palette_widget->colors(), *response.value());
if (result.is_error())
GUI::MessageBox::show_error(&window, String::formatted("Writing color palette failed: {}", result.error()));
}));
m_view_menu = window.add_menu("&View");
m_zoom_in_action = GUI::CommonActions::make_zoom_in_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->scale_by(0.1f);
});
m_zoom_out_action = GUI::CommonActions::make_zoom_out_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->scale_by(-0.1f);
});
m_reset_zoom_action = GUI::CommonActions::make_reset_zoom_action(
[&](auto&) {
if (auto* editor = current_image_editor())
editor->reset_view();
});
m_add_guide_action = GUI::Action::create(
"&Add Guide", g_icon_bag.add_guide, [&](auto&) {
auto dialog = PixelPaint::EditGuideDialog::construct(&window);
if (dialog->exec() != GUI::Dialog::ExecOK)
return;
auto* editor = current_image_editor();
VERIFY(editor);
auto offset = dialog->offset_as_pixel(*editor);
if (!offset.has_value())
return;
editor->add_guide(PixelPaint::Guide::construct(dialog->orientation(), offset.value()));
});
// Save this so other methods can use it
m_show_guides_action = GUI::Action::create_checkable(
"Show &Guides", [&](auto& action) {
Config::write_bool("PixelPaint", "Guides", "Show", action.is_checked());
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_guide_visibility(action.is_checked());
});
m_show_guides_action->set_checked(Config::read_bool("PixelPaint", "Guides", "Show", true));
m_view_menu->add_action(*m_zoom_in_action);
m_view_menu->add_action(*m_zoom_out_action);
m_view_menu->add_action(*m_reset_zoom_action);
m_view_menu->add_action(GUI::Action::create(
"&Fit Image To View", [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->fit_image_to_view();
}));
m_view_menu->add_separator();
m_view_menu->add_action(*m_add_guide_action);
m_view_menu->add_action(*m_show_guides_action);
m_view_menu->add_action(GUI::Action::create(
"&Clear Guides", g_icon_bag.clear_guides, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->clear_guides();
}));
m_view_menu->add_separator();
auto show_pixel_grid_action = GUI::Action::create_checkable(
"Show &Pixel Grid", [&](auto& action) {
Config::write_bool("PixelPaint", "PixelGrid", "Show", action.is_checked());
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_pixel_grid_visibility(action.is_checked());
});
show_pixel_grid_action->set_checked(Config::read_bool("PixelPaint", "PixelGrid", "Show", true));
m_view_menu->add_action(*show_pixel_grid_action);
m_show_rulers_action = GUI::Action::create_checkable(
"Show R&ulers", { Mod_Ctrl, Key_R }, [&](auto& action) {
Config::write_bool("PixelPaint", "Rulers", "Show", action.is_checked());
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_ruler_visibility(action.is_checked());
});
m_show_rulers_action->set_checked(Config::read_bool("PixelPaint", "Rulers", "Show", true));
m_view_menu->add_action(*m_show_rulers_action);
m_show_active_layer_boundary_action = GUI::Action::create_checkable(
"Show Active Layer &Boundary", [&](auto& action) {
Config::write_bool("PixelPaint", "ImageEditor", "ShowActiveLayerBoundary", action.is_checked());
auto* editor = current_image_editor();
VERIFY(editor);
editor->set_show_active_layer_boundary(action.is_checked());
});
m_show_active_layer_boundary_action->set_checked(Config::read_bool("PixelPaint", "ImageEditor", "ShowActiveLayerBoundary", true));
m_view_menu->add_action(*m_show_active_layer_boundary_action);
m_tool_menu = window.add_menu("&Tool");
m_toolbox->for_each_tool([&](auto& tool) {
if (tool.action())
m_tool_menu->add_action(*tool.action());
return IterationDecision::Continue;
});
m_image_menu = window.add_menu("&Image");
m_image_menu->add_action(GUI::Action::create(
"Flip &Vertically", g_icon_bag.edit_flip_vertical, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().flip(Gfx::Orientation::Vertical);
}));
m_image_menu->add_action(GUI::Action::create(
"Flip &Horizontally", g_icon_bag.edit_flip_horizontal, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().flip(Gfx::Orientation::Horizontal);
}));
m_image_menu->add_separator();
m_image_menu->add_action(GUI::CommonActions::make_rotate_counterclockwise_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().rotate(Gfx::RotationDirection::CounterClockwise);
}));
m_image_menu->add_action(GUI::CommonActions::make_rotate_clockwise_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().rotate(Gfx::RotationDirection::Clockwise);
}));
m_image_menu->add_separator();
m_image_menu->add_action(GUI::Action::create(
"&Crop To Selection", g_icon_bag.crop, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
// FIXME: disable this action if there is no selection
if (editor->selection().is_empty())
return;
auto crop_rect = editor->image().rect().intersected(editor->selection().bounding_rect());
editor->image().crop(crop_rect);
editor->selection().clear();
}));
m_layer_menu = window.add_menu("&Layer");
m_layer_menu->add_action(GUI::Action::create(
"New &Layer...", { Mod_Ctrl | Mod_Shift, Key_N }, g_icon_bag.new_layer, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto dialog = PixelPaint::CreateNewLayerDialog::construct(editor->image().size(), &window);
if (dialog->exec() == GUI::Dialog::ExecOK) {
auto layer_or_error = PixelPaint::Layer::try_create_with_size(editor->image(), dialog->layer_size(), dialog->layer_name());
if (layer_or_error.is_error()) {
GUI::MessageBox::show_error(&window, String::formatted("Unable to create layer with size {}", dialog->size()));
return;
}
editor->image().add_layer(layer_or_error.release_value());
editor->layers_did_change();
m_layer_list_widget->select_top_layer();
}
}));
m_layer_menu->add_separator();
m_layer_menu->add_action(GUI::Action::create(
"Select &Previous Layer", { 0, Key_PageUp }, g_icon_bag.previous_layer, [&](auto&) {
m_layer_list_widget->cycle_through_selection(1);
}));
m_layer_menu->add_action(GUI::Action::create(
"Select &Next Layer", { 0, Key_PageDown }, g_icon_bag.next_layer, [&](auto&) {
m_layer_list_widget->cycle_through_selection(-1);
}));
m_layer_menu->add_action(GUI::Action::create(
"Select &Top Layer", { 0, Key_Home }, g_icon_bag.top_layer, [&](auto&) {
m_layer_list_widget->select_top_layer();
}));
m_layer_menu->add_action(GUI::Action::create(
"Select B&ottom Layer", { 0, Key_End }, g_icon_bag.bottom_layer, [&](auto&) {
m_layer_list_widget->select_bottom_layer();
}));
m_layer_menu->add_separator();
m_layer_menu->add_action(GUI::CommonActions::make_move_to_front_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
editor->image().move_layer_to_front(*active_layer);
editor->layers_did_change();
}));
m_layer_menu->add_action(GUI::CommonActions::make_move_to_back_action(
[&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
editor->image().move_layer_to_back(*active_layer);
editor->layers_did_change();
}));
m_layer_menu->add_separator();
m_layer_menu->add_action(GUI::Action::create(
"Move Active Layer &Up", { Mod_Ctrl, Key_PageUp }, g_icon_bag.active_layer_up, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
editor->image().move_layer_up(*active_layer);
}));
m_layer_menu->add_action(GUI::Action::create(
"Move Active Layer &Down", { Mod_Ctrl, Key_PageDown }, g_icon_bag.active_layer_down, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
editor->image().move_layer_down(*active_layer);
}));
m_layer_menu->add_separator();
m_layer_menu->add_action(GUI::Action::create(
"&Remove Active Layer", { Mod_Ctrl, Key_D }, g_icon_bag.delete_layer, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
auto active_layer_index = editor->image().index_of(*active_layer);
editor->image().remove_layer(*active_layer);
if (editor->image().layer_count()) {
auto& next_active_layer = editor->image().layer(active_layer_index > 0 ? active_layer_index - 1 : 0);
editor->set_active_layer(&next_active_layer);
} else {
auto layer = PixelPaint::Layer::try_create_with_size(editor->image(), editor->image().size(), "Background").release_value_but_fixme_should_propagate_errors();
editor->image().add_layer(move(layer));
editor->layers_did_change();
m_layer_list_widget->select_top_layer();
}
}));
m_layer_list_widget->on_context_menu_request = [&](auto& event) {
m_layer_menu->popup(event.screen_position());
};
m_layer_menu->add_separator();
m_layer_menu->add_action(GUI::Action::create(
"Fl&atten Image", { Mod_Ctrl, Key_F }, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().flatten_all_layers();
editor->did_complete_action();
}));
m_layer_menu->add_action(GUI::Action::create(
"&Merge Visible", { Mod_Ctrl, Key_M }, g_icon_bag.merge_visible, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
editor->image().merge_visible_layers();
editor->did_complete_action();
}));
m_layer_menu->add_action(GUI::Action::create(
"M&erge Active Layer Down", { Mod_Ctrl, Key_E }, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto active_layer = editor->active_layer();
if (!active_layer)
return;
editor->image().merge_active_layer_down(*active_layer);
editor->did_complete_action();
}));
m_filter_menu = window.add_menu("&Filter");
m_filter_menu->add_action(GUI::Action::create("Filter &Gallery", g_icon_bag.filter, [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
auto dialog = PixelPaint::FilterGallery::construct(&window, editor);
if (dialog->exec() != GUI::Dialog::ExecOK)
return;
}));
m_filter_menu->add_separator();
m_filter_menu->add_action(GUI::Action::create("Generic 5x5 &Convolution", [&](auto&) {
auto* editor = current_image_editor();
VERIFY(editor);
if (auto* layer = editor->active_layer()) {
Gfx::GenericConvolutionFilter<5> filter;
if (auto parameters = PixelPaint::FilterParameters<Gfx::GenericConvolutionFilter<5>>::get(&window)) {
filter.apply(layer->bitmap(), layer->rect(), layer->bitmap(), layer->rect(), *parameters);
layer->did_modify_bitmap(layer->rect());
editor->did_complete_action();
}
}
}));
auto& help_menu = window.add_menu("&Help");
help_menu.add_action(GUI::CommonActions::make_about_action("Pixel Paint", GUI::Icon::default_icon("app-pixel-paint"), &window));
auto& toolbar = *find_descendant_of_type_named<GUI::Toolbar>("toolbar");
toolbar.add_action(*m_new_image_action);
toolbar.add_action(*m_open_image_action);
toolbar.add_action(*m_save_image_action);
toolbar.add_separator();
toolbar.add_action(*m_copy_action);
toolbar.add_action(*m_paste_action);
toolbar.add_action(*m_undo_action);
toolbar.add_action(*m_redo_action);
toolbar.add_separator();
toolbar.add_action(*m_zoom_in_action);
toolbar.add_action(*m_zoom_out_action);
toolbar.add_action(*m_reset_zoom_action);
m_zoom_combobox = toolbar.add<GUI::ComboBox>();
m_zoom_combobox->set_max_width(75);
m_zoom_combobox->set_model(*GUI::ItemListModel<String>::create(s_suggested_zoom_levels));
m_zoom_combobox->on_change = [this](String const& value, GUI::ModelIndex const& index) {
auto* editor = current_image_editor();
VERIFY(editor);
if (index.is_valid()) {
switch (index.row()) {
case s_zoom_level_fit_width:
editor->fit_image_to_view(ImageEditor::FitType::Width);
return;
case s_zoom_level_fit_height:
editor->fit_image_to_view(ImageEditor::FitType::Height);
return;
case s_zoom_level_fit_image:
editor->fit_image_to_view(ImageEditor::FitType::Both);
return;
}
}
auto zoom_level_optional = value.view().trim("%"sv, TrimMode::Right).to_int();
if (!zoom_level_optional.has_value()) {
// Indicate that a parse-error occurred by resetting the text to the current state.
editor->on_scale_change(editor->scale());
return;
}
editor->set_scale(zoom_level_optional.value() * 1.0f / 100);
// If the selected zoom level got clamped, or a "fit to …" level was selected,
// there is a chance that the new scale is identical to the old scale.
// In these cases, we need to manually reset the text:
editor->on_scale_change(editor->scale());
};
m_zoom_combobox->on_return_pressed = [this]() {
m_zoom_combobox->on_change(m_zoom_combobox->text(), GUI::ModelIndex());
};
}
void MainWidget::set_actions_enabled(bool enabled)
{
m_save_image_action->set_enabled(enabled);
m_save_image_as_action->set_enabled(enabled);
m_close_image_action->set_enabled(enabled);
m_export_submenu->set_children_actions_enabled(enabled);
m_edit_menu->set_children_actions_enabled(enabled);
m_paste_action->set_enabled(true);
m_view_menu->set_children_actions_enabled(enabled);
m_layer_menu->set_children_actions_enabled(enabled);
m_image_menu->set_children_actions_enabled(enabled);
m_tool_menu->set_children_actions_enabled(enabled);
m_filter_menu->set_children_actions_enabled(enabled);
m_zoom_combobox->set_enabled(enabled);
}
void MainWidget::open_image(Core::File& file)
{
auto try_load = m_loader.try_load_from_file(file);
if (try_load.is_error()) {
GUI::MessageBox::show_error(window(), String::formatted("Unable to open file: {}, {}", file.filename(), try_load.error()));
return;
}
auto& image = *m_loader.release_image();
auto& editor = create_new_editor(image);
editor.set_loaded_from_image(m_loader.is_raw_image());
editor.set_path(file.filename());
editor.undo_stack().set_current_unmodified();
m_layer_list_widget->set_image(&image);
}
void MainWidget::create_default_image()
{
auto image = Image::try_create_with_size({ 510, 356 }).release_value_but_fixme_should_propagate_errors();
auto bg_layer = Layer::try_create_with_size(*image, image->size(), "Background").release_value_but_fixme_should_propagate_errors();
image->add_layer(*bg_layer);
bg_layer->bitmap().fill(Color::White);
m_layer_list_widget->set_image(image);
auto& editor = create_new_editor(*image);
editor.set_active_layer(bg_layer);
editor.undo_stack().set_current_unmodified();
}
void MainWidget::create_image_from_clipboard()
{
auto bitmap = GUI::Clipboard::the().fetch_data_and_type().as_bitmap();
if (!bitmap) {
GUI::MessageBox::show(window(), "There is no image in a clipboard to paste.", "PixelPaint", GUI::MessageBox::Type::Warning);
return;
}
auto image = PixelPaint::Image::try_create_with_size(bitmap->size()).release_value_but_fixme_should_propagate_errors();
auto layer = PixelPaint::Layer::try_create_with_bitmap(image, *bitmap, "Pasted layer").release_value_but_fixme_should_propagate_errors();
image->add_layer(*layer);
auto& editor = create_new_editor(*image);
editor.set_title("Untitled");
m_layer_list_widget->set_image(image);
m_layer_list_widget->set_selected_layer(layer);
}
bool MainWidget::request_close()
{
while (!m_tab_widget->children().is_empty()) {
auto* editor = current_image_editor();
VERIFY(editor);
if (!editor->request_close())
return false;
m_tab_widget->remove_tab(*m_tab_widget->active_widget());
}
return true;
}
ImageEditor* MainWidget::current_image_editor()
{
if (!m_tab_widget->active_widget())
return nullptr;
return verify_cast<PixelPaint::ImageEditor>(m_tab_widget->active_widget());
}
ImageEditor& MainWidget::create_new_editor(NonnullRefPtr<Image> image)
{
auto& image_editor = m_tab_widget->add_tab<PixelPaint::ImageEditor>("Untitled", image);
image_editor.on_active_layer_change = [&](auto* layer) {
if (current_image_editor() != &image_editor)
return;
m_layer_list_widget->set_selected_layer(layer);
m_layer_properties_widget->set_layer(layer);
};
image_editor.on_title_change = [&](auto const& title) {
m_tab_widget->set_tab_title(image_editor, title);
};
image_editor.on_image_mouse_position_change = [&](auto const& mouse_position) {
auto const& image_size = current_image_editor()->image().size();
auto image_rectangle = Gfx::IntRect { 0, 0, image_size.width(), image_size.height() };
if (image_rectangle.contains(mouse_position)) {
m_statusbar->set_override_text(mouse_position.to_string());
} else {
m_statusbar->set_override_text({});
}
};
image_editor.on_leave = [&]() {
m_statusbar->set_override_text({});
};
image_editor.on_set_guide_visibility = [&](bool show_guides) {
m_show_guides_action->set_checked(show_guides);
};
image_editor.on_set_ruler_visibility = [&](bool show_rulers) {
m_show_rulers_action->set_checked(show_rulers);
};
image_editor.on_scale_change = [this](float scale) {
m_zoom_combobox->set_text(String::formatted("{}%", roundf(scale * 100)));
};
if (image->layer_count())
image_editor.set_active_layer(&image->layer(0));
if (!m_loader.is_raw_image()) {
m_loader.json_metadata().for_each([&](JsonValue const& value) {
if (!value.is_object())
return;
auto& json_object = value.as_object();
auto orientation_value = json_object.get("orientation"sv);
if (!orientation_value.is_string())
return;
auto offset_value = json_object.get("offset"sv);
if (!offset_value.is_number())
return;
auto orientation_string = orientation_value.as_string();
PixelPaint::Guide::Orientation orientation;
if (orientation_string == "horizontal"sv)
orientation = PixelPaint::Guide::Orientation::Horizontal;
else if (orientation_string == "vertical"sv)
orientation = PixelPaint::Guide::Orientation::Vertical;
else
return;
image_editor.add_guide(PixelPaint::Guide::construct(orientation, offset_value.to_number<float>()));
});
}
m_tab_widget->set_active_widget(&image_editor);
image_editor.set_focus(true);
image_editor.fit_image_to_view();
m_tool_properties_widget->set_enabled(true);
set_actions_enabled(true);
return image_editor;
}
void MainWidget::drop_event(GUI::DropEvent& event)
{
if (!event.mime_data().has_urls())
return;
event.accept();
if (event.mime_data().urls().is_empty())
return;
for (auto& url : event.mime_data().urls()) {
if (url.protocol() != "file")
continue;
auto response = FileSystemAccessClient::Client::the().try_request_file(window(), url.path(), Core::OpenMode::ReadOnly);
if (response.is_error())
return;
open_image(response.value());
}
}
}
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