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Lines 33-56
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| 33 |
gint n_buttons, |
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gint n_buttons, |
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gboolean left_handed) |
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gboolean left_handed) |
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{ |
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{ |
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const gint left_button = 0; |
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const gint left_button = 1; |
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gint right_button; |
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gint right_button; |
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gint i; |
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/* if the button is higher than 2 (3rd button) then it's |
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/* if the button is higher than 2 (3rd button) then it's |
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* probably one direction of a scroll wheel or something else |
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* probably one direction of a scroll wheel or something else |
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* uninteresting |
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* uninteresting |
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*/ |
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*/ |
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right_button = MIN (n_buttons - 1, 2); |
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right_button = MIN (n_buttons, 3); |
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/* If we change things we need to make sure we only swap buttons. |
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* If we end up with multiple physical buttons assigned to the same |
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* logical button the server will complain. This code assumes physical |
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* button 0 is the physical left mouse button, and that the physical |
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* button other than 0 currently assigned left_button or right_button |
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* is the physical right mouse button. |
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*/ |
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/* check if the current mapping satisfies the above assumptions */ |
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if (buttons[left_button - 1] != left_button && |
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buttons[left_button - 1] != right_button) |
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/* The current mapping is weird. Swapping buttons is probably not a |
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* good idea. |
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*/ |
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return; |
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if (left_handed) |
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/* check if we are left_handed and currently not swapped */ |
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if (left_handed && buttons[left_button - 1] == left_button) |
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{ |
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{ |
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buttons[left_button] = right_button + 1; |
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/* find the right button */ |
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buttons[right_button] = left_button + 1; |
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for (i = 0; i < n_buttons; i++) |
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{ |
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if (buttons[i] == right_button) |
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break; |
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} |
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/* swap the buttons */ |
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buttons[left_button - 1] = right_button; |
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buttons[i] = left_button; |
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} |
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} |
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else |
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/* check if we are not left_handed but are swapped */ |
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else if (!left_handed && buttons[left_button - 1] == right_button) |
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{ |
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{ |
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buttons[left_button] = left_button + 1; |
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/* find the right button */ |
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buttons[right_button] = right_button + 1; |
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for (i = 0; i < n_buttons; i++) |
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{ |
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if (buttons[i] == left_button) |
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break; |
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} |
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/* swap the buttons */ |
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buttons[i] = right_button; |
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buttons[left_button - 1] = left_button; |
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} |
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} |
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} |
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} |
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