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Code Issues Activity Actions

WindowServer+Taskbar: Animate window frames on minimize/unminimize

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We now show a quick window outline animation when going in/out of
minimized state. It's a simple 10 frame animation at 60fps, just to
give a visual cue of what's happening with the window.

The Taskbar sends over the corresponding button rect for each window
to the WindowServer using a new WM_SetWindowTaskbarRect message.

Note that when unminimizing, we still *show* the window right away,
and don't hold off until the animation has finished. This avoids
making the desktop feel slow/sluggish. :^)
This commit is contained in:
Andreas Kling 2019-12-03 21:34:34 +01:00
parent 51262e7e2d
commit d111b6ead4
8 changed files with 78 additions and 0 deletions
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36
Servers/WindowServer/WSCompositor.cpp
View file

@ -212,6 +212,42 @@ void WSCompositor::compose()
draw_geometry_label();
}
static const int minimize_animation_steps = 10;
wm.for_each_window([&](WSWindow& window) {
if (window.in_minimize_animation()) {
int animation_index = window.minimize_animation_index();
auto from_rect = window.is_minimized() ? window.frame().rect() : window.taskbar_rect();
auto to_rect = window.is_minimized() ? window.taskbar_rect() : window.frame().rect();
float x_delta_per_step = (float)(from_rect.x() - to_rect.x()) / minimize_animation_steps;
float y_delta_per_step = (float)(from_rect.y() - to_rect.y()) / minimize_animation_steps;
float width_delta_per_step = (float)(from_rect.width() - to_rect.width()) / minimize_animation_steps;
float height_delta_per_step = (float)(from_rect.height() - to_rect.height()) / minimize_animation_steps;
Rect rect {
from_rect.x() - (int)(x_delta_per_step * animation_index),
from_rect.y() - (int)(y_delta_per_step * animation_index),
from_rect.width() - (int)(width_delta_per_step * animation_index),
from_rect.height() - (int)(height_delta_per_step * animation_index)
};
#ifdef MINIMIZE_ANIMATION_DEBUG
dbg() << "Minimize animation from " << from_rect << " to " << to_rect << " frame# " << animation_index << " " << rect;
#endif
m_back_painter->draw_rect(rect, Color::White);
window.step_minimize_animation();
if (window.minimize_animation_index() >= minimize_animation_steps)
window.end_minimize_animation();
invalidate(rect);
}
return IterationDecision::Continue;
});
draw_cursor();
if (m_flash_flush) {