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backends/x11: Account for non-zero device origin when setting tablet area
Wacom's display tablets typically do not have (0,0) coincident with the top left corner of the screen. This "outbound" area must be taken into account when setting the area or else an unexpected offset of the pointer will occur. https://bugzilla.gnome.org/show_bug.cgi?id=784009
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@ -555,6 +555,8 @@ meta_input_settings_x11_set_tablet_mapping (MetaInputSettings *settings,
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static gboolean
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device_query_area (ClutterInputDevice *device,
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gint *x,
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gint *y,
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gint *width,
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gint *height)
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{
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@ -580,9 +582,15 @@ device_query_area (ClutterInputDevice *device,
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if (valuator->type != XIValuatorClass)
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continue;
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if (valuator->label == abs_x)
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*width = valuator->max - valuator->min;
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{
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*x = valuator->min;
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*width = valuator->max - valuator->min;
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}
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else if (valuator->label == abs_y)
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*height = valuator->max - valuator->min;
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{
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*y = valuator->min;
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*height = valuator->max - valuator->min;
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}
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}
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XIFreeDeviceInfo (info);
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@ -606,15 +614,15 @@ meta_input_settings_x11_set_tablet_area (MetaInputSettings *settings,
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gdouble padding_top,
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gdouble padding_bottom)
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{
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gint32 width, height, area[4] = { 0 };
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gint32 x, y, width, height, area[4] = { 0 };
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if (!device_query_area (device, &width, &height))
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if (!device_query_area (device, &x, &y, &width, &height))
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return;
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area[0] = width * padding_left;
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area[1] = height * padding_top;
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area[2] = width - (width * padding_right);
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area[3] = height - (height * padding_bottom);
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area[0] = (width * padding_left) + x;
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area[1] = (height * padding_top) + y;
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area[2] = width - (width * padding_right) + x;
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area[3] = height - (height * padding_bottom) + y;
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update_tablet_area (settings, device, area);
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}
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@ -624,9 +632,9 @@ meta_input_settings_x11_set_tablet_keep_aspect (MetaInputSettings *settings,
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MetaLogicalMonitor *logical_monitor,
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gboolean keep_aspect)
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{
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gint32 width, height, dev_width, dev_height, area[4] = { 0 };
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gint32 width, height, dev_x, dev_y, dev_width, dev_height, area[4] = { 0 };
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if (!device_query_area (device, &dev_width, &dev_height))
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if (!device_query_area (device, &dev_x, &dev_y, &dev_width, &dev_height))
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return;
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if (keep_aspect)
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@ -658,8 +666,10 @@ meta_input_settings_x11_set_tablet_keep_aspect (MetaInputSettings *settings,
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dev_height = dev_width / aspect_ratio;
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}
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area[2] = dev_width;
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area[3] = dev_height;
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area[0] = dev_x;
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area[1] = dev_y;
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area[2] = dev_width + dev_x;
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area[3] = dev_height + dev_y;
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update_tablet_area (settings, device, area);
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}
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