c9331a96d6
This makes them shrink when the taskbar fills with too many buttons. It doesn't scale to infinity open windows, but it's better than them escaping off screen after 6 open windows. :^)
322 lines
12 KiB
C++
322 lines
12 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "TaskbarWindow.h"
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#include "TaskbarButton.h"
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#include <AK/SharedBuffer.h>
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#include <LibCore/ConfigFile.h>
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#include <LibCore/StandardPaths.h>
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#include <LibDesktop/AppFile.h>
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#include <LibGUI/BoxLayout.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/Desktop.h>
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#include <LibGUI/Frame.h>
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#include <LibGUI/Icon.h>
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#include <LibGUI/Painter.h>
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#include <LibGUI/Window.h>
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#include <LibGUI/WindowServerConnection.h>
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#include <LibGfx/Palette.h>
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#include <serenity.h>
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#include <stdio.h>
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//#define EVENT_DEBUG
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class TaskbarWidget final : public GUI::Widget {
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C_OBJECT(TaskbarWidget);
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public:
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virtual ~TaskbarWidget() override { }
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private:
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TaskbarWidget() { }
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virtual void paint_event(GUI::PaintEvent& event) override
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{
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GUI::Painter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.fill_rect(rect(), palette().button());
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painter.draw_line({ 0, 1 }, { width() - 1, 1 }, palette().threed_highlight());
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}
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virtual void did_layout() override
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{
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WindowList::the().for_each_window([&](auto& window) {
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if (auto* button = window.button())
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static_cast<TaskbarButton*>(button)->update_taskbar_rect();
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});
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}
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};
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TaskbarWindow::TaskbarWindow()
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{
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set_window_type(GUI::WindowType::Taskbar);
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set_title("Taskbar");
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on_screen_rect_change(GUI::Desktop::the().rect());
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GUI::Desktop::the().on_rect_change = [this](const Gfx::IntRect& rect) { on_screen_rect_change(rect); };
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auto& widget = set_main_widget<TaskbarWidget>();
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widget.set_layout<GUI::HorizontalBoxLayout>();
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widget.layout()->set_margins({ 3, 2, 3, 2 });
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widget.layout()->set_spacing(3);
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m_default_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window.png");
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create_quick_launch_bar();
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}
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TaskbarWindow::~TaskbarWindow()
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{
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}
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void TaskbarWindow::create_quick_launch_bar()
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{
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auto& quick_launch_bar = main_widget()->add<GUI::Frame>();
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quick_launch_bar.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
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quick_launch_bar.set_layout<GUI::HorizontalBoxLayout>();
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quick_launch_bar.layout()->set_spacing(0);
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quick_launch_bar.layout()->set_margins({ 3, 0, 3, 0 });
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quick_launch_bar.set_frame_thickness(0);
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int total_width = 6;
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bool first = true;
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auto config = Core::ConfigFile::get_for_app("Taskbar");
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constexpr const char* quick_launch = "QuickLaunch";
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// FIXME: Core::ConfigFile does not keep the order of the entries.
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for (auto& name : config->keys(quick_launch)) {
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auto af_name = config->read_entry(quick_launch, name);
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auto af_path = String::formatted("{}/{}", Desktop::AppFile::APP_FILES_DIRECTORY, af_name);
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auto af = Desktop::AppFile::open(af_path);
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if (!af->is_valid())
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continue;
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auto app_executable = af->executable();
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auto& button = quick_launch_bar.add<GUI::Button>();
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button.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
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button.set_preferred_size(24, 24);
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button.set_button_style(Gfx::ButtonStyle::CoolBar);
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button.set_icon(af->icon().bitmap_for_size(16));
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button.set_tooltip(af->name());
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button.on_click = [app_executable](auto) {
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pid_t pid = fork();
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if (pid < 0) {
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perror("fork");
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} else if (pid == 0) {
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if (chdir(Core::StandardPaths::home_directory().characters()) < 0) {
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perror("chdir");
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exit(1);
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}
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execl(app_executable.characters(), app_executable.characters(), nullptr);
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perror("execl");
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ASSERT_NOT_REACHED();
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} else {
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if (disown(pid) < 0)
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perror("disown");
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}
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};
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if (!first)
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total_width += quick_launch_bar.layout()->spacing();
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first = false;
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total_width += button.preferred_width();
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}
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quick_launch_bar.set_preferred_size(total_width, 24);
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}
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void TaskbarWindow::on_screen_rect_change(const Gfx::IntRect& rect)
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{
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Gfx::IntRect new_rect { rect.x(), rect.bottom() - taskbar_height() + 1, rect.width(), taskbar_height() };
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set_rect(new_rect);
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}
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NonnullRefPtr<GUI::Button> TaskbarWindow::create_button(const WindowIdentifier& identifier)
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{
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auto& button = main_widget()->add<TaskbarButton>(identifier);
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button.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fill);
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button.set_min_size({ 20, 22 });
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button.set_max_size({ 140, 22 });
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button.set_text_alignment(Gfx::TextAlignment::CenterLeft);
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button.set_icon(*m_default_icon);
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return button;
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}
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static bool should_include_window(GUI::WindowType window_type, bool is_frameless)
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{
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return window_type == GUI::WindowType::Normal && !is_frameless;
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}
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void TaskbarWindow::add_window_button(::Window& window, const WindowIdentifier& identifier)
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{
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if (window.button())
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return;
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window.set_button(create_button(identifier));
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auto* button = window.button();
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button->on_click = [window = &window, identifier, button](auto) {
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// We need to look at the button's checked state here to figure
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// out if the application is active or not. That's because this
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// button's window may not actually be active when a modal window
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// is displayed, in which case window->is_active() would return
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// false because window is the modal window's owner (which is not
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// active)
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if (window->is_minimized() || !button->is_checked()) {
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GUI::WindowServerConnection::the().post_message(Messages::WindowServer::WM_SetActiveWindow(identifier.client_id(), identifier.window_id()));
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} else {
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GUI::WindowServerConnection::the().post_message(Messages::WindowServer::WM_SetWindowMinimized(identifier.client_id(), identifier.window_id(), true));
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}
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};
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}
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void TaskbarWindow::remove_window_button(::Window& window, bool was_removed)
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{
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auto* button = window.button();
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if (!button)
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return;
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if (!was_removed)
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static_cast<TaskbarButton*>(button)->clear_taskbar_rect();
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window.set_button(nullptr);
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button->remove_from_parent();
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}
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void TaskbarWindow::update_window_button(::Window& window, bool show_as_active)
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{
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auto* button = window.button();
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if (!button)
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return;
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if (window.is_minimized()) {
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button->set_foreground_color(Color::DarkGray);
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} else {
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button->set_foreground_color(Color::Black);
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}
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button->set_text(window.title());
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button->set_checked(show_as_active);
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}
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::Window* TaskbarWindow::find_window_owner(::Window& window) const
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{
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if (!window.is_modal())
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return &window;
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::Window* parent = nullptr;
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auto* current_window = &window;
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while (current_window) {
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parent = WindowList::the().find_parent(*current_window);
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if (!parent || !parent->is_modal())
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break;
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current_window = parent;
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}
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return parent;
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}
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void TaskbarWindow::wm_event(GUI::WMEvent& event)
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{
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WindowIdentifier identifier { event.client_id(), event.window_id() };
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switch (event.type()) {
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case GUI::Event::WM_WindowRemoved: {
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#ifdef EVENT_DEBUG
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auto& removed_event = static_cast<GUI::WMWindowRemovedEvent&>(event);
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dbgprintf("WM_WindowRemoved: client_id=%d, window_id=%d\n",
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removed_event.client_id(),
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removed_event.window_id());
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#endif
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if (auto* window = WindowList::the().window(identifier))
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remove_window_button(*window, true);
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WindowList::the().remove_window(identifier);
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update();
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break;
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}
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case GUI::Event::WM_WindowRectChanged: {
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#ifdef EVENT_DEBUG
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auto& changed_event = static_cast<GUI::WMWindowRectChangedEvent&>(event);
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dbgprintf("WM_WindowRectChanged: client_id=%d, window_id=%d, rect=%s\n",
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changed_event.client_id(),
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changed_event.window_id(),
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changed_event.rect().to_string().characters());
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#endif
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break;
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}
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case GUI::Event::WM_WindowIconBitmapChanged: {
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auto& changed_event = static_cast<GUI::WMWindowIconBitmapChangedEvent&>(event);
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#ifdef EVENT_DEBUG
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dbgprintf("WM_WindowIconBitmapChanged: client_id=%d, window_id=%d, icon_buffer_id=%d\n",
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changed_event.client_id(),
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changed_event.window_id(),
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changed_event.icon_buffer_id());
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#endif
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if (auto* window = WindowList::the().window(identifier)) {
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auto buffer = SharedBuffer::create_from_shbuf_id(changed_event.icon_buffer_id());
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ASSERT(buffer);
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if (window->button())
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window->button()->set_icon(Gfx::Bitmap::create_with_shared_buffer(Gfx::BitmapFormat::RGBA32, *buffer, changed_event.icon_size()));
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}
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break;
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}
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case GUI::Event::WM_WindowStateChanged: {
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auto& changed_event = static_cast<GUI::WMWindowStateChangedEvent&>(event);
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#ifdef EVENT_DEBUG
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dbgprintf("WM_WindowStateChanged: client_id=%d, window_id=%d, title=%s, rect=%s, is_active=%u, is_minimized=%u\n",
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changed_event.client_id(),
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changed_event.window_id(),
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changed_event.title().characters(),
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changed_event.rect().to_string().characters(),
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changed_event.is_active(),
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changed_event.is_minimized());
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#endif
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if (!should_include_window(changed_event.window_type(), changed_event.is_frameless()))
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break;
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auto& window = WindowList::the().ensure_window(identifier);
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window.set_parent_identifier({ changed_event.parent_client_id(), changed_event.parent_window_id() });
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if (!window.is_modal())
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add_window_button(window, identifier);
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else
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remove_window_button(window, false);
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window.set_title(changed_event.title());
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window.set_rect(changed_event.rect());
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window.set_modal(changed_event.is_modal());
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window.set_active(changed_event.is_active());
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window.set_minimized(changed_event.is_minimized());
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window.set_progress(changed_event.progress());
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auto* window_owner = find_window_owner(window);
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if (window_owner == &window) {
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update_window_button(window, window.is_active());
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} else if (window_owner) {
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// check the window owner's button if the modal's window button
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// would have been checked
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ASSERT(window.is_modal());
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update_window_button(*window_owner, window.is_active());
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}
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break;
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}
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default:
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break;
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}
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}
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