270 lines
8.5 KiB
C++
270 lines
8.5 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <glib.h>
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#include <gtk/gtk.h>
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#include <gdk/gdk.h>
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#include "debugging/debugging.h"
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#if 0
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GdkCursor* create_blank_cursor();
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void blank_cursor( GtkWidget* widget );
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void default_cursor( GtkWidget* widget );
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#endif
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void Sys_GetCursorPos( GtkWindow* window, int *x, int *y );
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void Sys_SetCursorPos( GtkWindow* window, int x, int y );
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class DeferredMotion
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{
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guint m_handler;
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typedef void ( *MotionFunction )( gdouble x, gdouble y, guint state, void* data );
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MotionFunction m_function;
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void* m_data;
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gdouble m_x;
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gdouble m_y;
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guint m_state;
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static gboolean deferred( DeferredMotion* self ){
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self->m_handler = 0;
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self->m_function( self->m_x, self->m_y, self->m_state, self->m_data );
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return FALSE;
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}
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public:
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DeferredMotion( MotionFunction function, void* data ) : m_handler( 0 ), m_function( function ), m_data( data ){
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}
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void motion( gdouble x, gdouble y, guint state ){
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m_x = x;
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m_y = y;
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m_state = state;
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if ( m_handler == 0 ) {
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m_handler = g_idle_add( (GSourceFunc)deferred, this );
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}
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}
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static gboolean gtk_motion( GtkWidget *widget, GdkEventMotion *event, DeferredMotion* self ){
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self->motion( event->x, event->y, event->state );
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return FALSE;
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}
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};
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class DeferredMotionDelta
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{
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int m_delta_x;
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int m_delta_y;
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unsigned int m_state;
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guint m_motion_handler;
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typedef void ( *MotionDeltaFunction )( int x, int y, unsigned int state, void* data );
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MotionDeltaFunction m_function;
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void* m_data;
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static gboolean deferred_motion( gpointer data ){
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DeferredMotionDelta* self = reinterpret_cast<DeferredMotionDelta*>( data );
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self->m_function(
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self->m_delta_x,
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self->m_delta_y,
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self->m_state,
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self->m_data
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);
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self->m_motion_handler = 0;
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self->m_delta_x = 0;
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self->m_delta_y = 0;
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return FALSE;
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}
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public:
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DeferredMotionDelta( MotionDeltaFunction function, void* data ) : m_delta_x( 0 ), m_delta_y( 0 ), m_motion_handler( 0 ), m_function( function ), m_data( data ){
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}
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void flush(){
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if ( m_motion_handler != 0 ) {
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g_source_remove( m_motion_handler );
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deferred_motion( this );
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}
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}
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void motion_delta( int x, int y, unsigned int state ){
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m_delta_x += x;
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m_delta_y += y;
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m_state = state;
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if ( m_motion_handler == 0 ) {
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m_motion_handler = g_idle_add( deferred_motion, this );
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}
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}
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};
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class FreezePointer
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{
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unsigned int handle_motion;
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int recorded_x, recorded_y, last_x, last_y, center_x, center_y;
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GtkWindow* m_window;
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GtkWidget* m_widget;
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typedef void ( *MotionDeltaFunction )( int x, int y, unsigned int state, void* data );
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MotionDeltaFunction m_function;
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void* m_data;
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public:
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FreezePointer() : handle_motion( 0 ), m_function( 0 ), m_data( 0 ){
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}
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static gboolean motion_delta( GtkWidget *widget, GdkEventMotion *event, FreezePointer* self ){
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int current_x, current_y;
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Sys_GetCursorPos( GTK_WINDOW( widget ), ¤t_x, ¤t_y );
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#define FIX_LINUX_TOUCHPAD 0 /* issues with this: mouse juddering
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in win10 (system is already at normal scaling)
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Leaving the DPI scaling to the application instead of the system half fixes it
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in GNU/Linux
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Mouselook is broken with custom Input Coordinate Tranformation */
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#if FIX_LINUX_TOUCHPAD
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const int dx = current_x - self->last_x;
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const int dy = current_y - self->last_y;
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const int ddx = current_x - self->center_x;
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const int ddy = current_y - self->center_y;
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self->last_x = current_x;
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self->last_y = current_y;
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if ( dx != 0 || dy != 0 ) {
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//globalOutputStream() << "motion x: " << dx << ", y: " << dy << "\n";
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if ( ddx < -32 || ddx > 32 || ddy < -32 || ddy > 32 ) {
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Sys_SetCursorPos( GTK_WINDOW( widget ), self->center_x, self->center_y );
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self->last_x = self->center_x;
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self->last_y = self->center_y;
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}
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#else
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const int dx = current_x - self->center_x;
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const int dy = current_y - self->center_y;
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if ( dx != 0 || dy != 0 ) {
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//globalOutputStream() << "motion x: " << dx << ", y: " << dy << "\n";
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Sys_SetCursorPos( GTK_WINDOW( widget ), self->center_x, self->center_y );
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#endif
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self->m_function( dx, dy, event->state, self->m_data );
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}
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return FALSE;
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}
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void freeze_pointer( GtkWindow* window, GtkWidget* widget, MotionDeltaFunction function, void* data ){
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ASSERT_MESSAGE( m_function == 0, "can't freeze pointer: already frozen" );
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const GdkEventMask mask = static_cast<GdkEventMask>( GDK_POINTER_MOTION_MASK
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| GDK_POINTER_MOTION_HINT_MASK
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| GDK_BUTTON_MOTION_MASK
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| GDK_BUTTON1_MOTION_MASK
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| GDK_BUTTON2_MOTION_MASK
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| GDK_BUTTON3_MOTION_MASK
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| GDK_BUTTON_PRESS_MASK
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| GDK_BUTTON_RELEASE_MASK
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| GDK_VISIBILITY_NOTIFY_MASK );
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GdkCursor* cursor = gdk_cursor_new( GDK_BLANK_CURSOR );
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//GdkCursor* cursor = create_blank_cursor();
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//GdkGrabStatus status =
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/* fixes cursor runaways during srsly quick drags in camera
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drags with pressed buttons have no problem at all w/o this */
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gdk_pointer_grab( gtk_widget_get_window( GTK_WIDGET( window ) ), TRUE, mask, 0, cursor, GDK_CURRENT_TIME );
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//gdk_window_set_cursor ( gtk_widget_get_window( GTK_WIDGET( window ) ), cursor );
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/* is needed to fix activating neighbor widgets, that happens, if using upper one */
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gtk_grab_add( widget );
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gdk_cursor_unref( cursor );
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Sys_GetCursorPos( window, &recorded_x, &recorded_y );
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/* using center for tracking for max safety */
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gdk_window_get_origin( gtk_widget_get_window( widget ), ¢er_x, ¢er_y );
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GtkAllocation allocation;
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gtk_widget_get_allocation( widget, &allocation );
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center_y += allocation.height / 2;
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center_x += allocation.width / 2;
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Sys_SetCursorPos( window, center_x, center_y );
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last_x = center_x;
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last_y = center_y;
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m_widget = widget;
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m_window = window;
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m_function = function;
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m_data = data;
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handle_motion = g_signal_connect( G_OBJECT( window ), "motion_notify_event", G_CALLBACK( motion_delta ), this );
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}
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void unfreeze_pointer( bool centerize ){
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ASSERT_MESSAGE( m_function != 0, "can't unfreeze pointer: is not frozen" );
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g_signal_handler_disconnect( G_OBJECT( m_window ), handle_motion );
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m_function = 0;
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m_data = 0;
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if( centerize ){
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Sys_SetCursorPos( m_window, center_x, center_y );
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}
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else{
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Sys_SetCursorPos( m_window, recorded_x, recorded_y );
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}
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// gdk_window_set_cursor( gtk_widget_get_window( GTK_WIDGET( m_window ) ), 0 );
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gdk_pointer_ungrab( GDK_CURRENT_TIME );
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gtk_grab_remove( m_widget );
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}
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};
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class DeferredAdjustment
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{
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gdouble m_value;
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guint m_handler;
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typedef void ( *ValueChangedFunction )( void* data, gdouble value );
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ValueChangedFunction m_function;
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void* m_data;
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static gboolean deferred_value_changed( gpointer data ){
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DeferredAdjustment* self = reinterpret_cast<DeferredAdjustment*>( data );
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self->m_function(
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self->m_data,
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self->m_value
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);
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self->m_handler = 0;
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self->m_value = 0;
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return FALSE;
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}
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public:
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DeferredAdjustment( ValueChangedFunction function, void* data ) : m_value( 0 ), m_handler( 0 ), m_function( function ), m_data( data ){
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}
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void flush(){
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if ( m_handler != 0 ) {
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g_source_remove( m_handler );
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deferred_value_changed( this );
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}
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}
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void value_changed( gdouble value ){
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m_value = value;
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if ( m_handler == 0 ) {
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m_handler = g_idle_add( deferred_value_changed, this );
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}
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}
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static void adjustment_value_changed( GtkAdjustment *adjustment, DeferredAdjustment* self ){
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self->value_changed( gtk_adjustment_get_value( adjustment ) );
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}
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};
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