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[x11] Handle raw motion events (more) correctly
For now, only the first two axis (mouse X and Y) are supported (XInput treats the scroll wheel events as axes too, so mice have up to 4!), but most importantly, this prevents the scroll wheel from being seen as the X axis. Oops.
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1 changed files with 18 additions and 5 deletions
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@ -99,10 +99,11 @@ typedef struct x11_device_s {
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} x11_device_t;
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#define X11_MOUSE_BUTTONS 32
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#define X11_MOUSE_AXES 2
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// The X11 protocol supports only 256 keys
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static in_buttoninfo_t x11_key_buttons[256];
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// X11 mice have only two axes (FIXME always true?)
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static in_axisinfo_t x11_mouse_axes[2];
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// X11 mice have only two axes (FIXME NOT always true (XInput says otherwise!)
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static in_axisinfo_t x11_mouse_axes[X11_MOUSE_AXES];
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// FIXME assume up to 32 mouse buttons (see X11_MOUSE_BUTTONS)
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static in_buttoninfo_t x11_mouse_buttons[X11_MOUSE_BUTTONS];
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static const char *x11_mouse_axis_names[] = {"M_X", "M_Y"};
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@ -918,8 +919,21 @@ xi_raw_motion (void *event)
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Window root_w, child_w;
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XIRawEvent *re = event;
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x11_mouse_axes[0].value = re->raw_values[0];
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x11_mouse_axes[1].value = re->raw_values[1];
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//FIXME it turns out mice can have multiple axes (my trackball has 4:
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//usual x and y, +scroll up/down and left/right (clicky and icky, but
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//still...)
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unsigned mask = re->valuators.mask[0] & 3;
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if (!mask) {
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return;
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}
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x11_mouse_axes[0].value = 0;
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x11_mouse_axes[1].value = 0;
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for (int axis = 0, ind = 0; mask; axis++, mask >>= 1) {
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if (mask & 1) {
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x11_mouse_axes[axis].value = re->raw_values[ind++];
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}
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}
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XQueryPointer (x_disp, x_win, &root_w, &child_w, &root_x, &root_y,
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&x11_mouse.x, &x11_mouse.y, &x11_mouse.shift);
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// want only the modifier state
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@ -935,7 +949,6 @@ xi_raw_motion (void *event)
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static void
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xi_raw_button (void *event, int press)
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{
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int root_x, root_y;
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Window root_w, child_w;
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unsigned button;
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