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kicad/libs/kiplatform/gtk/ui.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 Ian McInerney <Ian.S.McInerney at ieee.org>
* Copyright (C) 2020-2023 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <kiplatform/ui.h>
#include <wx/choice.h>
#include <wx/nonownedwnd.h>
#include <wx/settings.h>
#include <wx/window.h>
#include <wx/log.h>
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#endif
#ifdef GDK_WINDOWING_WAYLAND
#include <gdk/gdkwayland.h>
#endif
#ifdef KICAD_WAYLAND
#include "wayland-pointer-constraints-unstable-v1.h"
#endif
// Set WXTRACE=KICAD_WAYLAND to see logs
const wxString traceWayland = wxS( "KICAD_WAYLAND" );
bool KIPLATFORM::UI::IsDarkTheme()
{
wxColour bg = wxSystemSettings::GetColour( wxSYS_COLOUR_WINDOW );
// Weighted W3C formula
double brightness = ( bg.Red() / 255.0 ) * 0.299 +
( bg.Green() / 255.0 ) * 0.587 +
( bg.Blue() / 255.0 ) * 0.117;
return brightness < 0.5;
}
wxColour KIPLATFORM::UI::GetDialogBGColour()
{
return wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
}
void KIPLATFORM::UI::ForceFocus( wxWindow* aWindow )
{
aWindow->SetFocus();
}
bool KIPLATFORM::UI::IsWindowActive( wxWindow* aWindow )
{
if( !aWindow )
return false;
GtkWindow* window = GTK_WINDOW( aWindow->GetHandle() );
if( window )
return gtk_window_is_active( window );
// We shouldn't really ever reach this point
return false;
}
void KIPLATFORM::UI::ReparentQuasiModal( wxNonOwnedWindow* aWindow )
{
// Not needed on this platform
}
void KIPLATFORM::UI::FixupCancelButtonCmdKeyCollision( wxWindow *aWindow )
{
// Not needed on this platform
}
bool KIPLATFORM::UI::IsStockCursorOk( wxStockCursor aCursor )
{
switch( aCursor )
{
case wxCURSOR_BULLSEYE:
case wxCURSOR_HAND:
case wxCURSOR_ARROW:
case wxCURSOR_BLANK:
return true;
default:
return false;
}
}
/**
* The following two functions are based on the "hack" contained in the attached patch at
* https://gitlab.gnome.org/GNOME/gtk/-/issues/1910 which is supposed to speed up creation of
* GTK choice boxes.
*
* The basic idea is to disable some of the event handlers on the menus for the choice box to
* prevent them from running, which will speed up the creation of the choice box and its popup menu.
*/
static void disable_area_apply_attributes_cb( GtkWidget* pItem, gpointer userdata )
{
// GTK needs this enormous chain to get the actual type of item that we want
GtkMenuItem* pMenuItem = GTK_MENU_ITEM( pItem );
GtkWidget* child = gtk_bin_get_child( GTK_BIN( pMenuItem ) );
GtkCellView* pCellView = GTK_CELL_VIEW( child );
GtkCellLayout* pCellLayout = GTK_CELL_LAYOUT( pCellView );
GtkCellArea* pCellArea = gtk_cell_layout_get_area( pCellLayout );
g_signal_handlers_block_matched( pCellArea, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, userdata );
}
void KIPLATFORM::UI::LargeChoiceBoxHack( wxChoice* aChoice )
{
AtkObject* atkObj = gtk_combo_box_get_popup_accessible( GTK_COMBO_BOX( aChoice->m_widget ) );
if( !atkObj || !GTK_IS_ACCESSIBLE( atkObj ) )
return;
GtkWidget* widget = gtk_accessible_get_widget( GTK_ACCESSIBLE( atkObj ) );
if( !widget || !GTK_IS_MENU( widget ) )
return;
GtkMenu* menu = GTK_MENU( widget );
gtk_container_foreach( GTK_CONTAINER( menu ), disable_area_apply_attributes_cb, menu );
}
void KIPLATFORM::UI::EllipsizeChoiceBox( wxChoice* aChoice )
{
// This function is based on the code inside the function post_process_ui in
// gtkfilechooserwidget.c
GList* cells = gtk_cell_layout_get_cells( GTK_CELL_LAYOUT( aChoice->m_widget ) );
if( !cells )
return;
GtkCellRenderer* cell = (GtkCellRenderer*) cells->data;
if( !cell )
return;
g_object_set( G_OBJECT( cell ), "ellipsize", PANGO_ELLIPSIZE_END, nullptr );
// Only the list of cells must be freed, the renderer isn't ours to free
g_list_free( cells );
}
double KIPLATFORM::UI::GetPixelScaleFactor( const wxWindow* aWindow )
{
double val = 1.0;
GtkWidget* widget = static_cast<GtkWidget*>( aWindow->GetHandle() );
if( widget && gtk_check_version( 3, 10, 0 ) == nullptr )
val = gtk_widget_get_scale_factor( widget );
return val;
}
double KIPLATFORM::UI::GetContentScaleFactor( const wxWindow* aWindow )
{
// TODO: Do we need something different here?
return GetPixelScaleFactor( aWindow );
}
wxSize KIPLATFORM::UI::GetUnobscuredSize( const wxWindow* aWindow )
{
return wxSize( aWindow->GetSize().GetX() - wxSystemSettings::GetMetric( wxSYS_VSCROLL_X ),
aWindow->GetSize().GetY() - wxSystemSettings::GetMetric( wxSYS_HSCROLL_Y ) );
}
void KIPLATFORM::UI::SetOverlayScrolling( const wxWindow* aWindow, bool overlay )
{
gtk_scrolled_window_set_overlay_scrolling( GTK_SCROLLED_WINDOW( aWindow->GetHandle() ),
overlay );
}
bool KIPLATFORM::UI::AllowIconsInMenus()
{
gboolean allowed = 1;
g_object_get( gtk_settings_get_default(), "gtk-menu-images", &allowed, NULL );
return !!allowed;
}
#if defined( GDK_WINDOWING_WAYLAND ) && defined( KICAD_WAYLAND )
static bool wayland_warp_pointer( GtkWidget* aWidget, GdkDisplay* aDisplay, GdkWindow* aWindow,
GdkDevice* aPtrDev, int aX, int aY );
// GDK doesn't know if we've moved the cursor using Wayland pointer constraints.
// So emulate the actual position here
static wxPoint s_warped_from;
static wxPoint s_warped_to;
wxPoint KIPLATFORM::UI::GetMousePosition()
{
wxPoint wx_pos = wxGetMousePosition();
if( wx_pos == s_warped_from )
{
wxLogTrace( traceWayland, wxS( "Faked mouse pos %d %d -> %d %d" ), wx_pos.x, wx_pos.y,
s_warped_to.x, s_warped_to.y );
return s_warped_to;
}
else
{
// Mouse has moved
s_warped_from = wxPoint();
s_warped_to = wxPoint();
}
return wx_pos;
}
#endif
void KIPLATFORM::UI::WarpPointer( wxWindow* aWindow, int aX, int aY )
{
if( !wxGetEnv( wxT( "WAYLAND_DISPLAY" ), nullptr ) )
{
aWindow->WarpPointer( aX, aY );
}
else
{
GtkWidget* widget = static_cast<GtkWidget*>( aWindow->GetHandle() );
GdkDisplay* disp = gtk_widget_get_display( widget );
GdkSeat* seat = gdk_display_get_default_seat( disp );
GdkDevice* ptrdev = gdk_seat_get_pointer( seat );
#if defined( GDK_WINDOWING_WAYLAND ) && defined( KICAD_WAYLAND )
if( GDK_IS_WAYLAND_DISPLAY( disp ) )
{
wxPoint initialPos = wxGetMousePosition();
GdkWindow* win = aWindow->GTKGetDrawingWindow();
if( wayland_warp_pointer( widget, disp, win, ptrdev, aX, aY ) )
{
s_warped_from = initialPos;
s_warped_to = aWindow->ClientToScreen( wxPoint( aX, aY ) );
wxLogTrace( traceWayland, wxS( "Set warped from %d %d to %d %d" ), s_warped_from.x,
s_warped_from.y, s_warped_to.x, s_warped_to.y );
}
}
#endif
#ifdef GDK_WINDOWING_X11
if( GDK_IS_X11_DISPLAY( disp ) )
{
GdkWindow* win = gdk_device_get_window_at_position( ptrdev, nullptr, nullptr );
GdkCursor* blank_cursor = gdk_cursor_new_for_display( disp, GDK_BLANK_CURSOR );
GdkCursor* cur_cursor = gdk_window_get_cursor( win );
if( cur_cursor )
g_object_ref( cur_cursor );
gdk_window_set_cursor( win, blank_cursor );
aWindow->WarpPointer( aX, aY );
gdk_window_set_cursor( win, cur_cursor );
}
#endif
}
}
void KIPLATFORM::UI::ImmControl( wxWindow* aWindow, bool aEnable )
{
}
//
// **** Wayland hacks ahead ****
//
#if defined( GDK_WINDOWING_WAYLAND ) && defined( KICAD_WAYLAND )
static bool s_wl_initialized = false;
static struct wl_compositor* s_wl_compositor = NULL;
static struct zwp_pointer_constraints_v1* s_wl_pointer_constraints = NULL;
static struct zwp_confined_pointer_v1* s_wl_confined_pointer = NULL;
static struct wl_region* s_wl_confinement_region = NULL;
static bool s_wl_locked_flag = false;
static void handle_global( void* data, struct wl_registry* registry, uint32_t name,
const char* interface, uint32_t version )
{
if( strcmp( interface, wl_compositor_interface.name ) == 0 )
{
wxLogTrace( traceWayland, "handle_global received %s", interface );
s_wl_compositor = static_cast<wl_compositor*>(
wl_registry_bind( registry, name, &wl_compositor_interface, version ) );
}
else if( strcmp( interface, zwp_pointer_constraints_v1_interface.name ) == 0 )
{
wxLogTrace( traceWayland, "handle_global received %s", interface );
s_wl_pointer_constraints = static_cast<zwp_pointer_constraints_v1*>( wl_registry_bind(
registry, name, &zwp_pointer_constraints_v1_interface, version ) );
}
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = NULL,
};
static void confined_handler( void* data, struct zwp_confined_pointer_v1* zwp_confined_pointer_v1 )
{
wxLogTrace( traceWayland, wxS( "Pointer confined" ) );
}
static void unconfined_handler( void* data,
struct zwp_confined_pointer_v1* zwp_confined_pointer_v1 )
{
wxLogTrace( traceWayland, wxS( "Pointer unconfined" ) );
}
static const struct zwp_confined_pointer_v1_listener confined_pointer_listener = {
.confined = confined_handler,
.unconfined = unconfined_handler
};
static void locked_handler( void* data, struct zwp_locked_pointer_v1* zwp_locked_pointer_v1 )
{
s_wl_locked_flag = true;
wxLogTrace( traceWayland, wxS( "Pointer locked" ) );
}
static void unlocked_handler( void* data, struct zwp_locked_pointer_v1* zwp_locked_pointer_v1 )
{
wxLogTrace( traceWayland, wxS( "Pointer unlocked" ) );
}
static const struct zwp_locked_pointer_v1_listener locked_pointer_listener = {
.locked = locked_handler,
.unlocked = unlocked_handler
};
/**
* Initializes `compositor` and `pointer_constraints` global variables.
*/
static void initialize_wayland( wl_display* wldisp )
{
if( s_wl_initialized )
{
return;
}
struct wl_registry* registry = wl_display_get_registry( wldisp );
wl_registry_add_listener( registry, &registry_listener, NULL );
wl_display_roundtrip( wldisp );
s_wl_initialized = true;
}
struct zwp_locked_pointer_v1* s_wl_locked_pointer = NULL;
static int s_after_paint_handler_id = 0;
static void on_frame_clock_after_paint( GdkFrameClock* clock, GtkWidget* widget )
{
if( s_wl_locked_pointer )
{
zwp_locked_pointer_v1_destroy( s_wl_locked_pointer );
s_wl_locked_pointer = NULL;
wxLogTrace( traceWayland, wxS( "after-paint: locked_pointer destroyed" ) );
g_signal_handler_disconnect( (gpointer) clock, s_after_paint_handler_id );
s_after_paint_handler_id = 0;
// restore confinement
if( s_wl_confinement_region != NULL )
{
wxLogTrace( traceWayland, wxS( "after-paint: Restoring confinement" ) );
GdkDisplay* disp = gtk_widget_get_display( widget );
GdkSeat* seat = gdk_display_get_default_seat( disp );
GdkDevice* ptrdev = gdk_seat_get_pointer( seat );
GdkWindow* window = gtk_widget_get_window( widget );
wl_display* wldisp = gdk_wayland_display_get_wl_display( disp );
wl_surface* wlsurf = gdk_wayland_window_get_wl_surface( window );
wl_pointer* wlptr = gdk_wayland_device_get_wl_pointer( ptrdev );
s_wl_confined_pointer = zwp_pointer_constraints_v1_confine_pointer(
s_wl_pointer_constraints, wlsurf, wlptr, s_wl_confinement_region,
ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT );
wl_display_roundtrip( wldisp );
}
}
}
static bool wayland_warp_pointer( GtkWidget* aWidget, GdkDisplay* aDisplay, GdkWindow* aWindow,
GdkDevice* aPtrDev, int aX, int aY )
{
wl_display* wldisp = gdk_wayland_display_get_wl_display( aDisplay );
wl_surface* wlsurf = gdk_wayland_window_get_wl_surface( aWindow );
wl_pointer* wlptr = gdk_wayland_device_get_wl_pointer( aPtrDev );
if( s_after_paint_handler_id )
{
// Previous paint not done yet
wxLogTrace( traceWayland, wxS( "Not warping: after-paint pending" ) );
return false;
}
initialize_wayland( wldisp );
if( s_wl_locked_pointer )
{
// This shouldn't happen but let's be safe
wxLogTrace( traceWayland, wxS( "** Destroying previous locked_pointer **" ) );
zwp_locked_pointer_v1_destroy( s_wl_locked_pointer );
wl_display_roundtrip( wldisp );
s_wl_locked_pointer = NULL;
}
// wl_surface_commit causes an assert on GNOME, but has to be called on KDE
// before destroying the locked pointer, so wait until GDK commits the surface.
GdkFrameClock* frame_clock = gdk_window_get_frame_clock( aWindow );
s_after_paint_handler_id = g_signal_connect_after(
frame_clock, "after-paint", G_CALLBACK( on_frame_clock_after_paint ), aWidget );
// temporary disable confinement to allow pointer warping
if( s_wl_confinement_region && s_wl_confined_pointer )
{
zwp_confined_pointer_v1_destroy( s_wl_confined_pointer );
wl_display_roundtrip( wldisp );
s_wl_confined_pointer = NULL;
}
s_wl_locked_flag = false;
s_wl_locked_pointer =
zwp_pointer_constraints_v1_lock_pointer( s_wl_pointer_constraints, wlsurf, wlptr, NULL,
ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT );
zwp_locked_pointer_v1_add_listener(s_wl_locked_pointer, &locked_pointer_listener, NULL);
gint wx, wy;
gtk_widget_translate_coordinates( aWidget, gtk_widget_get_toplevel( aWidget ), 0, 0, &wx, &wy );
zwp_locked_pointer_v1_set_cursor_position_hint( s_wl_locked_pointer, wl_fixed_from_int( aX + wx ),
wl_fixed_from_int( aY + wy ) );
// Don't call wl_surface_commit, wait for GDK because of an assert on GNOME.
wl_display_roundtrip( wldisp ); // To receive "locked" event.
gtk_widget_queue_draw( aWidget ); // Needed on some GNOME environment to trigger
// the "after-paint" event handler.
return s_wl_locked_flag;
}
void KIPLATFORM::UI::InfiniteDragPrepareWindow( wxWindow* aWindow )
{
wxLogTrace( traceWayland, wxS( "InfiniteDragPrepareWindow" ) );
if( s_wl_confined_pointer != NULL )
{
KIPLATFORM::UI::InfiniteDragReleaseWindow();
}
GtkWidget* widget = static_cast<GtkWidget*>( aWindow->GetHandle() );
GdkDisplay* disp = gtk_widget_get_display( widget );
if( !GDK_IS_WAYLAND_DISPLAY( disp ) )
{
return;
}
GdkSeat* seat = gdk_display_get_default_seat( disp );
GdkDevice* ptrdev = gdk_seat_get_pointer( seat );
GdkWindow* win = aWindow->GTKGetDrawingWindow();
wl_display* wldisp = gdk_wayland_display_get_wl_display( disp );
wl_surface* wlsurf = gdk_wayland_window_get_wl_surface( win );
wl_pointer* wlptr = gdk_wayland_device_get_wl_pointer( ptrdev );
initialize_wayland( wldisp );
gint x, y, width, height;
gdk_window_get_geometry( gdk_window_get_toplevel( win ), &x, &y, &width, &height );
wxLogTrace( traceWayland, wxS( "Confine region: %d %d %d %d" ), x, y, width, height );
s_wl_confinement_region = wl_compositor_create_region( s_wl_compositor );
wl_region_add( s_wl_confinement_region, x, y, width, height );
s_wl_confined_pointer = zwp_pointer_constraints_v1_confine_pointer(
s_wl_pointer_constraints, wlsurf, wlptr, s_wl_confinement_region,
ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_ONESHOT );
zwp_confined_pointer_v1_add_listener(s_wl_confined_pointer, &confined_pointer_listener, NULL);
wl_display_roundtrip( wldisp );
};
void KIPLATFORM::UI::InfiniteDragReleaseWindow()
{
wxLogTrace( traceWayland, wxS( "InfiniteDragReleaseWindow" ) );
if( s_wl_confined_pointer )
{
zwp_confined_pointer_v1_destroy( s_wl_confined_pointer );
s_wl_confined_pointer = NULL;
}
if( s_wl_confinement_region )
{
wl_region_destroy( s_wl_confinement_region );
s_wl_confinement_region = NULL;
}
};
#else // No Wayland support
void KIPLATFORM::UI::InfiniteDragPrepareWindow( wxWindow* aWindow )
{
// Not needed on X11
};
void KIPLATFORM::UI::InfiniteDragReleaseWindow()
{
// Not needed on X11
};
wxPoint KIPLATFORM::UI::GetMousePosition()
{
return wxGetMousePosition();
}
#endif
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