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Code Issues Activity Actions

WindowServer: Change rendering drag&drop to use the Overlay class

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This enables flicker-free rendering.
This commit is contained in:
Tom 2021-06-25 12:08:23 -06:00 • committed by Andreas Kling
parent 84cab29c59
commit 8cfb4c82f0
7 changed files with 99 additions and 98 deletions
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4
Userland/Services/WindowServer/ClientConnection.cpp
View file

@ -58,6 +58,10 @@ ClientConnection::ClientConnection(NonnullRefPtr<Core::LocalSocket> client_socke
ClientConnection::~ClientConnection()
{
auto& wm = WindowManager::the();
if (wm.dnd_client() == this)
wm.end_dnd_drag();
if (m_has_display_link)
Compositor::the().decrement_display_link_count({});

70
Userland/Services/WindowServer/Compositor.cpp
View file

@ -156,22 +156,6 @@ void Compositor::compose()
VERIFY(!m_overlay_rects_changed);
auto dirty_screen_rects = move(m_dirty_screen_rects);
auto* dnd_client = wm.dnd_client();
if (!m_last_dnd_rect.is_empty() || (m_invalidated_cursor && dnd_client)) {
Screen::for_each([&](auto& screen) {
if (!m_last_dnd_rect.is_empty()) {
auto rect = m_last_dnd_rect.intersected(screen.rect());
if (!rect.is_empty())
dirty_screen_rects.add(rect);
}
if (m_invalidated_cursor && dnd_client) {
auto rect = wm.dnd_rect().intersected(screen.rect());
if (!rect.is_empty())
dirty_screen_rects.add(rect);
}
return IterationDecision::Continue;
});
}
// Mark window regions as dirty that need to be re-rendered
wm.window_stack().for_each_visible_window_from_back_to_front([&](Window& window) {
@ -543,60 +527,6 @@ void Compositor::compose()
m_invalidated_window = false;
m_invalidated_cursor = false;
if (wm.dnd_client()) {
auto dnd_rect = wm.dnd_rect();
Screen::for_each([&](auto& screen) {
auto screen_rect = screen.rect();
auto render_dnd_rect = screen_rect.intersected(dnd_rect);
if (render_dnd_rect.is_empty())
return IterationDecision::Continue;
auto& screen_data = m_screen_data[screen.index()];
auto& back_painter = *screen_data.m_back_painter;
// TODO: render once into a backing bitmap, then just blit...
auto render_dnd = [&]() {
back_painter.fill_rect(dnd_rect, wm.palette().selection().with_alpha(200));
back_painter.draw_rect(dnd_rect, wm.palette().selection());
if (!wm.dnd_text().is_empty()) {
auto text_rect = dnd_rect;
if (wm.dnd_bitmap())
text_rect.translate_by(wm.dnd_bitmap()->width() + 8, 0);
back_painter.draw_text(text_rect, wm.dnd_text(), Gfx::TextAlignment::CenterLeft, wm.palette().selection_text());
}
if (wm.dnd_bitmap()) {
back_painter.blit(dnd_rect.top_left().translated(4, 4), *wm.dnd_bitmap(), wm.dnd_bitmap()->rect());
}
};
dirty_screen_rects.for_each_intersected(dnd_rect, [&](const Gfx::IntRect& render_rect) {
auto screen_render_rect = render_rect.intersected(screen_rect);
if (screen_render_rect.is_empty())
return IterationDecision::Continue;
Gfx::PainterStateSaver saver(back_painter);
back_painter.add_clip_rect(screen_render_rect);
render_dnd();
return IterationDecision::Continue;
});
screen_data.m_flush_transparent_rects.for_each_intersected(dnd_rect, [&](const Gfx::IntRect& render_rect) {
auto screen_render_rect = render_rect.intersected(screen_rect);
if (screen_render_rect.is_empty())
return IterationDecision::Continue;
Gfx::PainterStateSaver saver(back_painter);
back_painter.add_clip_rect(screen_render_rect);
render_dnd();
return IterationDecision::Continue;
});
m_last_dnd_rect = dnd_rect;
return IterationDecision::Continue;
});
} else {
if (!m_last_dnd_rect.is_empty()) {
invalidate_screen(m_last_dnd_rect);
m_last_dnd_rect = {};
}
}
bool did_render_animation = false;
Screen::for_each([&](auto& screen) {
auto& screen_data = m_screen_data[screen.index()];

2
Userland/Services/WindowServer/Compositor.h
View file

@ -181,8 +181,6 @@ private:
Gfx::DisjointRectSet m_dirty_screen_rects;
Gfx::DisjointRectSet m_opaque_wallpaper_rects;
Gfx::IntRect m_last_dnd_rect;
String m_wallpaper_path { "" };
WallpaperMode m_wallpaper_mode { WallpaperMode::Unchecked };
RefPtr<Gfx::Bitmap> m_wallpaper;

57
Userland/Services/WindowServer/Overlays.cpp
View file

@ -41,11 +41,12 @@ void Overlay::set_rect(Gfx::IntRect const& rect)
{
if (m_rect == rect)
return;
auto previous_rect = m_rect;
m_rect = rect;
invalidate();
if (is_enabled())
Compositor::the().overlay_rects_changed();
rect_changed();
rect_changed(previous_rect);
}
BitmapOverlay::BitmapOverlay()
@ -53,10 +54,11 @@ BitmapOverlay::BitmapOverlay()
clear_bitmaps();
}
void BitmapOverlay::rect_changed()
void BitmapOverlay::rect_changed(Gfx::IntRect const& previous_rect)
{
if (rect().size() != previous_rect.size())
clear_bitmaps();
Overlay::rect_changed();
Overlay::rect_changed(previous_rect);
}
void BitmapOverlay::clear_bitmaps()
@ -84,8 +86,9 @@ RectangularOverlay::RectangularOverlay()
clear_bitmaps();
}
void RectangularOverlay::rect_changed()
void RectangularOverlay::rect_changed(Gfx::IntRect const& previous_rect)
{
if (m_rerender_on_location_change || rect().size() != previous_rect.size())
clear_bitmaps();
}
@ -208,6 +211,7 @@ Gfx::IntRect ScreenNumberOverlay::calculate_content_rect_for_screen(Screen& scre
WindowGeometryOverlay::WindowGeometryOverlay(Window& window)
: m_window(window)
{
rerender_on_location_change(true);
update_rect();
}
@ -253,4 +257,49 @@ void WindowGeometryOverlay::window_rect_changed()
invalidate();
}
DndOverlay::DndOverlay(String const& text, Gfx::Bitmap const* bitmap)
: m_bitmap(bitmap)
, m_text(text)
{
update_rect();
}
Gfx::Font const& DndOverlay::font()
{
return WindowManager::the().font();
}
void DndOverlay::update_rect()
{
int bitmap_width = m_bitmap ? m_bitmap->width() : 0;
int bitmap_height = m_bitmap ? m_bitmap->height() : 0;
auto& font = this->font();
int width = font.width(m_text) + bitmap_width;
int height = max((int)font.glyph_height(), bitmap_height);
auto location = Compositor::the().current_cursor_rect().center().translated(8, 8);
set_rect(Gfx::IntRect(location, { width, height }).inflated(16, 8));
}
RefPtr<Gfx::Bitmap> DndOverlay::create_bitmap(int scale_factor)
{
auto new_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, rect().size(), scale_factor);
if (!new_bitmap)
return {};
auto& wm = WindowManager::the();
Gfx::Painter bitmap_painter(*new_bitmap);
auto bitmap_rect = new_bitmap->rect();
bitmap_painter.fill_rect(bitmap_rect, wm.palette().selection().with_alpha(200));
bitmap_painter.draw_rect(bitmap_rect, wm.palette().selection());
if (!m_text.is_empty()) {
auto text_rect = bitmap_rect;
if (m_bitmap)
text_rect.translate_by(m_bitmap->width() + 8, 0);
bitmap_painter.draw_text(text_rect, m_text, Gfx::TextAlignment::CenterLeft, wm.palette().selection_text());
}
if (m_bitmap)
bitmap_painter.blit(bitmap_rect.top_left().translated(4, 4), *m_bitmap, m_bitmap->rect());
return new_bitmap;
}
}

36
Userland/Services/WindowServer/Overlays.h
View file

@ -26,6 +26,7 @@ public:
enum class ZOrder {
WindowGeometry,
Dnd,
ScreenNumber,
};
[[nodiscard]] virtual ZOrder zorder() const = 0;
@ -39,7 +40,7 @@ public:
virtual void theme_changed()
{
rect_changed();
rect_changed(m_rect);
}
bool invalidate();
@ -49,7 +50,7 @@ protected:
void set_rect(Gfx::IntRect const&);
virtual void rect_changed() {};
virtual void rect_changed(Gfx::IntRect const&) {};
private:
void clear_invalidated() { m_invalidated = false; }
@ -76,7 +77,7 @@ protected:
BitmapOverlay();
void clear_bitmaps();
virtual void rect_changed() override;
virtual void rect_changed(Gfx::IntRect const&) override;
private:
RefPtr<MultiScaleBitmaps> m_bitmaps;
@ -97,10 +98,16 @@ protected:
void set_content_rect(Gfx::IntRect const&);
void clear_bitmaps();
virtual void rect_changed() override;
virtual void rect_changed(Gfx::IntRect const&) override;
void rerender_on_location_change(bool value)
{
m_rerender_on_location_change = value;
}
private:
RefPtr<MultiScaleBitmaps> m_rendered_bitmaps;
bool m_rerender_on_location_change { false };
};
class ScreenNumberOverlay : public RectangularOverlay {
@ -143,4 +150,25 @@ private:
Gfx::IntRect m_label_rect;
};
class DndOverlay : public BitmapOverlay {
public:
DndOverlay(String const&, Gfx::Bitmap const*);
void cursor_moved()
{
update_rect();
}
virtual ZOrder zorder() const override { return ZOrder::Dnd; }
virtual RefPtr<Gfx::Bitmap> create_bitmap(int) override;
private:
Gfx::Font const& font();
void update_rect();
RefPtr<Gfx::Bitmap> m_bitmap;
String m_text;
Gfx::IntRect m_label_rect;
};
}

17
Userland/Services/WindowServer/WindowManager.cpp
View file

@ -776,6 +776,8 @@ bool WindowManager::process_ongoing_drag(MouseEvent& event)
return false;
if (event.type() == Event::MouseMove) {
m_dnd_overlay->cursor_moved();
// We didn't let go of the drag yet, see if we should send some drag move events..
m_window_stack.for_each_visible_window_from_front_to_back([&](Window& window) {
if (!window.rect().contains(event.position()))
@ -1523,7 +1525,8 @@ void WindowManager::start_dnd_drag(ClientConnection& client, String const& text,
VERIFY(!m_dnd_client);
m_dnd_client = client;
m_dnd_text = text;
m_dnd_bitmap = bitmap;
m_dnd_overlay = Compositor::the().create_overlay<DndOverlay>(text, bitmap);
m_dnd_overlay->set_enabled(true);
m_dnd_mime_data = mime_data;
Compositor::the().invalidate_cursor();
m_active_input_tracking_window = nullptr;
@ -1535,17 +1538,7 @@ void WindowManager::end_dnd_drag()
Compositor::the().invalidate_cursor();
m_dnd_client = nullptr;
m_dnd_text = {};
m_dnd_bitmap = nullptr;
}
Gfx::IntRect WindowManager::dnd_rect() const
{
int bitmap_width = m_dnd_bitmap ? m_dnd_bitmap->width() : 0;
int bitmap_height = m_dnd_bitmap ? m_dnd_bitmap->height() : 0;
int width = font().width(m_dnd_text) + bitmap_width;
int height = max((int)font().glyph_height(), bitmap_height);
auto location = Compositor::the().current_cursor_rect().center().translated(8, 8);
return Gfx::IntRect(location, { width, height }).inflated(16, 8);
m_dnd_overlay = nullptr;
}
void WindowManager::invalidate_after_theme_or_font_change()

7
Userland/Services/WindowServer/WindowManager.h
View file

@ -37,6 +37,7 @@ class Window;
class ClientConnection;
class WindowSwitcher;
class Button;
class DndOverlay;
class WindowGeometryOverlay;
enum class ResizeDirection {
@ -84,10 +85,7 @@ public:
Gfx::IntRect maximized_window_rect(Window const&, bool relative_to_window_screen = false) const;
ClientConnection const* dnd_client() const { return m_dnd_client.ptr(); }
String const& dnd_text() const { return m_dnd_text; }
Core::MimeData const& dnd_mime_data() const { return *m_dnd_mime_data; }
Gfx::Bitmap const* dnd_bitmap() const { return m_dnd_bitmap; }
Gfx::IntRect dnd_rect() const;
void start_dnd_drag(ClientConnection&, String const& text, Gfx::Bitmap const*, Core::MimeData const&);
void end_dnd_drag();
@ -345,10 +343,11 @@ private:
RefPtr<Core::ConfigFile> m_config;
OwnPtr<DndOverlay> m_dnd_overlay;
WeakPtr<ClientConnection> m_dnd_client;
String m_dnd_text;
RefPtr<Core::MimeData> m_dnd_mime_data;
RefPtr<Gfx::Bitmap> m_dnd_bitmap;
};
template<typename Callback>