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Fix to allow reasonable pointer behavior in window mode when an extended

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2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>

        * gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)

        Fix to allow reasonable pointer behavior in window mode when an
        extended input device reports an incorrect resolution of 0.
Fixes
        bug #123546
This commit is contained in:
13:49 Daniel Rogers 2003-12-31 22:00:21 +00:00 committed by Daniel Rogers
parent 5300b92170
commit a5f2118818
6 changed files with 66 additions and 9 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>
* gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)
Fix to allow reasonable pointer behavior in window mode when an
extended input device reports an incorrect resolution of 0. Fixes
bug #123546
2003-12-31 Christian Neumair <chris@gnome-de.org>
* gdk-pixbuf/gdk-pixdata.c: (gdk_pixbuf_from_pixdata):

8
ChangeLog.pre-2-10
View File

@ -1,3 +1,11 @@
2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>
* gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)
Fix to allow reasonable pointer behavior in window mode when an
extended input device reports an incorrect resolution of 0. Fixes
bug #123546
2003-12-31 Christian Neumair <chris@gnome-de.org>
* gdk-pixbuf/gdk-pixdata.c: (gdk_pixbuf_from_pixdata):

8
ChangeLog.pre-2-4
View File

@ -1,3 +1,11 @@
2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>
* gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)
Fix to allow reasonable pointer behavior in window mode when an
extended input device reports an incorrect resolution of 0. Fixes
bug #123546
2003-12-31 Christian Neumair <chris@gnome-de.org>
* gdk-pixbuf/gdk-pixdata.c: (gdk_pixbuf_from_pixdata):

8
ChangeLog.pre-2-6
View File

@ -1,3 +1,11 @@
2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>
* gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)
Fix to allow reasonable pointer behavior in window mode when an
extended input device reports an incorrect resolution of 0. Fixes
bug #123546
2003-12-31 Christian Neumair <chris@gnome-de.org>
* gdk-pixbuf/gdk-pixdata.c: (gdk_pixbuf_from_pixdata):

8
ChangeLog.pre-2-8
View File

@ -1,3 +1,11 @@
2003-12-31 13:49 Daniel Rogers <dsrogers@phasevelocity.org>
* gdk/x11/gdkinput-x11.c: (gdk_input_translate_coordinates)
Fix to allow reasonable pointer behavior in window mode when an
extended input device reports an incorrect resolution of 0. Fixes
bug #123546
2003-12-31 Christian Neumair <chris@gnome-de.org>
* gdk-pixbuf/gdk-pixdata.c: (gdk_pixbuf_from_pixdata):

35
gdk/x11/gdkinput-x11.c
View File

@ -463,15 +463,32 @@ gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
}
else /* GDK_MODE_WINDOW */
{
double device_aspect = (device_height*gdkdev->axes[y_axis].resolution) /
(device_width*gdkdev->axes[x_axis].resolution);
double x_resolution = gdkdev->axes[x_axis].resolution;
double y_resolution = gdkdev->axes[y_axis].resolution;
double device_aspect;
/*
* Some drivers incorrectly report the resolution of the device
* as zero (in partiular linuxwacom < 0.5.3 with usb tablets).
* This causes the device_aspect to become NaN and totally
* breaks windowed mode. If this is the case, the best we can
* do is to assume the resolution is non-zero is equal in both
* directions (which is true for many devices). The absolute
* value of the resolution doesn't matter since we only use the
* ratio.
*/
if ((x_resolution == 0) || (y_resolution == 0))
{
x_resolution = 1;
y_resolution = 1;
}
device_aspect = (device_height*y_resolution) /
(device_width*x_resolution);
if (device_aspect * impl->width >= impl->height)
{
/* device taller than window */
x_scale = impl->width / device_width;
y_scale = (x_scale * gdkdev->axes[x_axis].resolution)
/ gdkdev->axes[y_axis].resolution;
y_scale = (x_scale * x_resolution)
/ y_resolution;
x_offset = 0;
y_offset = -(device_height * y_scale -
@ -481,8 +498,8 @@ gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
{
/* window taller than device */
y_scale = impl->height / device_height;
x_scale = (y_scale * gdkdev->axes[y_axis].resolution)
/ gdkdev->axes[x_axis].resolution;
x_scale = (y_scale * y_resolution)
/ x_resolution;
y_offset = 0;
x_offset = - (device_width * x_scale - impl->width)/2;
@ -494,12 +511,12 @@ gdk_input_translate_coordinates (GdkDevicePrivate *gdkdev,
switch (gdkdev->info.axes[i].use)
{
case GDK_AXIS_X:
axis_out[i] = x_offset + x_scale*axis_data[x_axis];
axis_out[i] = x_offset + x_scale * axis_data[x_axis];
if (x_out)
*x_out = axis_out[i];
break;
case GDK_AXIS_Y:
axis_out[i] = y_offset + y_scale*axis_data[y_axis];
axis_out[i] = y_offset + y_scale * axis_data[y_axis];
if (y_out)
*y_out = axis_out[i];
break;