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WindowServer+LibGUI: Allow specifying a "launch origin" for new windows

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The launch_origin_rect parameter to create_window() specifies where on
screen the window was launched from. It's optional, but if you provide
it, the new window will have a short wireframe animation from the origin
to the initial window frame rect.

GUI::Window looks for the "__libgui_launch_origin_rect" environment
variable. Put your launch origin rect in there with the format
"<x>,<y>,<width>,<height>" and the first GUI::Window shown by the app
will use that as the launch origin rect.

Also it looks pretty neat, although I'm sure we can improve it. :^)
This commit is contained in:
Andreas Kling 2021-06-27 17:07:31 +02:00
parent 75f870a93f
commit 6a132d8672
6 changed files with 46 additions and 4 deletions
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20
Userland/Services/WindowServer/Window.cpp
View file

@ -365,6 +365,26 @@ void Window::start_minimize_animation()
m_animation->start();
}
void Window::start_launch_animation(Gfx::IntRect const& launch_origin_rect)
{
m_animation = Animation::create();
m_animation->set_length(150);
m_animation->on_update = [this, launch_origin_rect](float progress, Gfx::Painter& painter, Screen& screen, Gfx::DisjointRectSet& flush_rects) {
Gfx::PainterStateSaver saver(painter);
painter.set_draw_op(Gfx::Painter::DrawOp::Invert);
auto rect = interpolate_rect(launch_origin_rect, frame().rect(), progress);
painter.draw_rect(rect, Color::Transparent); // Color doesn't matter, we draw inverted
flush_rects.add(rect.intersected(screen.rect()));
Compositor::the().invalidate_screen(rect);
};
m_animation->on_stop = [this] {
m_animation = nullptr;
};
m_animation->start();
}
void Window::set_opacity(float opacity)
{
if (m_opacity == opacity)