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Polygonal selection tool allows for the drawing of any arbitrary polygonal shape. It tracks clicked points in a vector, upon double clicking we finalize the polygon and generate the selection mask. The user can press the escape key during selection to cancel. The mask is generated as follows: - First we calculate the size of the bounding rect needed to hold the polygon - We add 2 pixels to height/width to allow us a 1 pixel border, the polygon will be centered in this bitmap - Draw the polygon into the bitmap via Gfx::Painter, making sure to connect final polygon point to the first to ensure an enclosed shape - Generate a selection mask the size of the bitmap, with all pixels initially selected - Perform a flood fill from (0,0) which is guaranteed to be outside the polygon - For every pixel reached by the flood fill, we clear the selected pixel from the selection mask - Finally we merge the selection mask like other selection tools.
92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "ToolboxWidget.h"
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#include "Tools/BrushTool.h"
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#include "Tools/BucketTool.h"
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#include "Tools/CloneTool.h"
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#include "Tools/EllipseTool.h"
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#include "Tools/EraseTool.h"
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#include "Tools/GuideTool.h"
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#include "Tools/LineTool.h"
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#include "Tools/MoveTool.h"
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#include "Tools/PenTool.h"
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#include "Tools/PickerTool.h"
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#include "Tools/PolygonalSelectTool.h"
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#include "Tools/RectangleSelectTool.h"
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#include "Tools/RectangleTool.h"
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#include "Tools/SprayTool.h"
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#include "Tools/WandSelectTool.h"
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#include "Tools/ZoomTool.h"
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#include <LibGUI/Action.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/Toolbar.h>
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REGISTER_WIDGET(PixelPaint, ToolboxWidget);
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namespace PixelPaint {
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ToolboxWidget::ToolboxWidget()
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{
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set_fill_with_background_color(true);
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set_fixed_width(26);
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set_layout<GUI::VerticalBoxLayout>();
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layout()->set_spacing(0);
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layout()->set_margins(2);
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m_action_group.set_exclusive(true);
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m_action_group.set_unchecking_allowed(false);
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m_toolbar = add<GUI::Toolbar>(Gfx::Orientation::Vertical);
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m_toolbar->set_collapsible(true);
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setup_tools();
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}
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void ToolboxWidget::setup_tools()
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{
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auto add_tool = [&](StringView icon_name, GUI::Shortcut const& shortcut, NonnullOwnPtr<Tool> tool) {
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auto action = GUI::Action::create_checkable(tool->tool_name(), shortcut, Gfx::Bitmap::try_load_from_file(String::formatted("/res/icons/pixelpaint/{}.png", icon_name)).release_value_but_fixme_should_propagate_errors(),
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[this, tool = tool.ptr()](auto& action) {
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if (action.is_checked()) {
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on_tool_selection(tool);
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m_active_tool = tool;
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} else {
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on_tool_selection(nullptr);
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}
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});
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m_action_group.add_action(action);
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auto& button = m_toolbar->add_action(action);
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button.on_context_menu_request = [action = action.ptr(), tool = tool.ptr()](auto& event) {
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action->activate();
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tool->on_tool_button_contextmenu(event);
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};
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tool->set_action(action);
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m_tools.append(move(tool));
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};
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add_tool("move"sv, { 0, Key_M }, make<MoveTool>());
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add_tool("pen"sv, { 0, Key_N }, make<PenTool>());
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add_tool("brush"sv, { 0, Key_P }, make<BrushTool>());
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add_tool("bucket"sv, { Mod_Shift, Key_B }, make<BucketTool>());
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add_tool("spray"sv, { Mod_Shift, Key_S }, make<SprayTool>());
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add_tool("picker"sv, { 0, Key_O }, make<PickerTool>());
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add_tool("eraser"sv, { Mod_Shift, Key_E }, make<EraseTool>());
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add_tool("line"sv, { Mod_Ctrl | Mod_Shift, Key_L }, make<LineTool>());
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add_tool("rectangle"sv, { Mod_Ctrl | Mod_Shift, Key_R }, make<RectangleTool>());
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add_tool("circle"sv, { Mod_Ctrl | Mod_Shift, Key_E }, make<EllipseTool>());
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add_tool("zoom"sv, { 0, Key_Z }, make<ZoomTool>());
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add_tool("rectangle-select"sv, { 0, Key_R }, make<RectangleSelectTool>());
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add_tool("wand-select"sv, { 0, Key_W }, make<WandSelectTool>());
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add_tool("polygonal-select"sv, { Mod_Shift, Key_P }, make<PolygonalSelectTool>());
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add_tool("guides"sv, { 0, Key_G }, make<GuideTool>());
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add_tool("clone"sv, { 0, Key_C }, make<CloneTool>());
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}
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}
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