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This keeps the existing ClutterBezier implementation but changes the visible API to match the needs of the tablet tool pressure curve: a bezier defined within a [0.0/0.0, 1.0/1.0] box,(sampled into a set of x->y mappings for each possible pressure input x, and a lookup function to get those values out of the curve. This patch moves the internally-only functions to be statics and changes meta_bezier_init() to take only the second and third control point, as normalized doubles. Because internally we still work with integers, the bezier curve now has an integer "precision" that defines how many points between 0.0 and 1.0 we can sample. The meta_bezier_rasterize() function calculates the x->y mapping for each point on the bezier curve given the initial scale of the curve. That value is then available to the caller via meta_bezier_lookup(). Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3399>
This directory implements a framework for automated tests of Mutter. The basic idea is that mutter-test-runner acts as the window manager and compositor, and forks off instances of mutter-test-client to act as clients. There's a simple scripting language for tests. A very small test would look like: --- # Start up a new X11 client with the client id 1 (doesn't have to be an integer) # Windows for this client will be referred to as 1/<window-id> new_client 1 x11 # Create and show two windows - again the IDs don't have to be integers create 1/1 show 1/1 create 1/2 show 1/2 # Wait for the commands we've executed in the clients to reach Mutter wait # Check that the windows are in the order we expect assert_stacking 1/1 1/2 --- Running ======= The tests are installed according to: https://wiki.gnome.org/Initiatives/GnomeGoals/InstalledTests if -Dtests=true is passed to `meson configure`. You can run them uninstalled with: ninja test Command reference ================= The following commands are supported. Quoting and comments follow shell rules. new_client <client-id> [wayland|x11] Starts a client, connecting by either Wayland or X11. The client will subsequently be known with the given client-id (an arbitrary string) quit_client <client-id> Destroys all windows for the client, waits for that to be processed, then instructs the client to exit. create <client-id>/<window-id> [override|csd] Creates a new window. For the X11 backend, the keyword 'override' can be given to create an override-redirect and the keyword 'csd' can be given to create a client-side decorated window. show <client-id>/<window-id> hide <client-id>/<window-id> Ask the client to show (map) or hide (unmap) the given window activate <client-id>/<window-id> Ask the client to raise and focus the given window. local_activate <client-id>-<window-id> The same as 'activate', but the operation is done directly inside Mutter and works for both backends raise <client-id>/<window-id> lower <client-id>/<window-id> Ask the client to raise or lower the given window ID. This is a no-op for Wayland clients. (It's also considered discouraged, but supported, for non-override-redirect X11 clients.) minimize <client-id>/<window-id> unminimize <client-id>/<window-id> Ask the client to minimize or unminimize the given window ID. This older term for this operation is "iconify". destroy <client-id>/<window-id> Destroy the given window wait Wait until all requests sent by Mutter to clients have been received by Mutter, and then wait until all requests by Mutter have been processed by the X server. assert_stacking <client-id>/<window-id> <client-id>/<window-id> ... Assert that the list of client windows known to Mutter is as given and in the given order, bottom to top. The character '|' can be present in the list of windows to indicate the guard window that separates hidden and visible windows. If '|' isn't present, the guard window is asserted to be below all client windows. This function also queries the X server stack and verifies that Mutter's expectation of the X server stack matches reality.