mirror of
https://gitlab.winehq.org/wine/wine-staging.git
synced 2024-11-21 16:46:54 -08:00
118 lines
4.5 KiB
Diff
118 lines
4.5 KiB
Diff
From fd61f237db287d30a26fc6724103c871cff57bd2 Mon Sep 17 00:00:00 2001
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From: Jordan Galby <gravemind2a+wine@gmail.com>
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Date: Tue, 16 Jul 2019 00:34:38 -0400
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Subject: [PATCH] winex11.drv: Accumulate mouse movement to avoid rounding
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losses.
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Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=42631
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From: Jordan Galby <gravemind2a+wine@gmail.com>
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---
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dlls/winex11.drv/mouse.c | 40 +++++++++++++++++++++++++++++++++-------
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1 file changed, 33 insertions(+), 7 deletions(-)
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diff --git a/dlls/winex11.drv/mouse.c b/dlls/winex11.drv/mouse.c
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index 2fcacaee95c..e3c5f8d122e 100644
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--- a/dlls/winex11.drv/mouse.c
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+++ b/dlls/winex11.drv/mouse.c
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@@ -365,6 +365,9 @@ static void update_relative_valuators(XIAnyClassInfo **valuators, int n_valuator
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thread_data->x_pos_valuator.min = thread_data->x_pos_valuator.max = 0;
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if (thread_data->y_pos_valuator.min >= thread_data->y_pos_valuator.max)
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thread_data->y_pos_valuator.min = thread_data->y_pos_valuator.max = 0;
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+
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+ thread_data->x_pos_valuator.value = 0;
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+ thread_data->y_pos_valuator.value = 0;
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}
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#endif
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@@ -1904,6 +1907,7 @@ static BOOL X11DRV_RawMotion( XGenericEventCookie *xev )
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double dx = 0, dy = 0, val;
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double raw_dx = 0, raw_dy = 0, raw_val;
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double x_scale = 1, y_scale = 1;
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+ double x_accum = 0, y_accum = 0;
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struct x11drv_thread_data *thread_data = x11drv_thread_data();
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XIValuatorClassInfo *x_pos, *y_pos;
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@@ -1915,6 +1919,9 @@ static BOOL X11DRV_RawMotion( XGenericEventCookie *xev )
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x_pos = &thread_data->x_pos_valuator;
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y_pos = &thread_data->y_pos_valuator;
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+ x_accum = x_pos->value;
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+ y_accum = y_pos->value;
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+
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input.type = INPUT_MOUSE;
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input.u.mi.mouseData = 0;
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input.u.mi.dwFlags = MOUSEEVENTF_MOVE;
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@@ -1942,9 +1949,9 @@ static BOOL X11DRV_RawMotion( XGenericEventCookie *xev )
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raw_dx = raw_val;
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input.u.mi.dwFlags |= (x_pos->mode == XIModeAbsolute ? MOUSEEVENTF_ABSOLUTE : 0);
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if (x_pos->mode == XIModeAbsolute)
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- input.u.mi.dx = (dx - x_pos->min) * x_scale;
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+ x_accum = (dx - x_pos->min) * x_scale;
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else
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- input.u.mi.dx = dx * x_scale;
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+ x_accum += dx * x_scale;
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}
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if (i == y_pos->number)
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{
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@@ -1952,18 +1959,30 @@ static BOOL X11DRV_RawMotion( XGenericEventCookie *xev )
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raw_dy = raw_val;
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input.u.mi.dwFlags |= (y_pos->mode == XIModeAbsolute ? MOUSEEVENTF_ABSOLUTE : 0);
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if (y_pos->mode == XIModeAbsolute)
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- input.u.mi.dy = (dy - y_pos->min) * y_scale;
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+ y_accum = (dy - y_pos->min) * y_scale;
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else
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- input.u.mi.dy = dy * y_scale;
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+ y_accum += dy * y_scale;
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}
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}
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+ /* Accumulate the fractional parts so they aren't lost after casting
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+ * successive motion values to integral fields.
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+ *
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+ * Note: It looks like raw_dx, raw_dy are already
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+ * integral values but that may be wrong.
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+ */
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+ input.u.mi.dx = (LONG)x_accum;
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+ input.u.mi.dy = (LONG)y_accum;
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+
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if (broken_rawevents && is_old_motion_event( xev->serial ))
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{
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TRACE( "pos %d,%d old serial %lu, ignoring\n", input.u.mi.dx, input.u.mi.dy, xev->serial );
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return FALSE;
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}
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+ x_pos->value = x_accum - input.u.mi.dx;
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+ y_pos->value = y_accum - input.u.mi.dy;
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+
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if (x_pos->mode == XIModeAbsolute)
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{
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TRACE( "pos %d,%d (event %f,%f)\n", input.u.mi.dx, input.u.mi.dy, dx, dy );
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@@ -1971,14 +1990,21 @@ static BOOL X11DRV_RawMotion( XGenericEventCookie *xev )
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}
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else if (!thread_data->xi2_rawinput_only)
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{
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- TRACE( "pos %d,%d (event %f,%f)\n", input.u.mi.dx, input.u.mi.dy, dx, dy );
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- __wine_send_input( 0, &input, SEND_HWMSG_WINDOW );
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+ if ((dy || dy) && !(input.u.mi.dx || input.u.mi.dy))
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+ {
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+ TRACE( "accumulating raw motion (event %f,%f accum %f,%f)\n", dx, dy, x_pos->value, y_pos->value );
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+ }
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+ else
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+ {
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+ TRACE( "pos %d,%d (event %f,%f)\n", input.u.mi.dx, input.u.mi.dy, dx, dy );
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+ __wine_send_input( 0, &input, SEND_HWMSG_WINDOW );
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+ }
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}
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else
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{
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input.u.mi.dx = raw_dx;
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input.u.mi.dy = raw_dy;
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- TRACE( "raw pos %d,%d (event %f,%f)\n", input.u.mi.dx, input.u.mi.dy, dx, dy );
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+ TRACE( "raw pos %d,%d (event %f,%f)\n", input.u.mi.dx, input.u.mi.dy, raw_dx, raw_dy );
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__wine_send_input( 0, &input, SEND_HWMSG_RAWINPUT );
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}
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return TRUE;
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--
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2.27.0
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