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glfw: add Window.setUserPointer

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-10-17 23:04:43 -07:00 • committed by Stephen Gutekanst
parent d4e249412b
commit 726bc52c73
1 changed files with 36 additions and 18 deletions
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54
glfw/src/Window.zig
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@ -1060,25 +1060,24 @@ pub inline fn setAttrib(self: Window, attrib: isize, value: bool) Error!void {
try getError(); try getError();
} }
// TODO(window): /// Sets the user pointer of the specified window.
///
/// This function sets the user-defined pointer of the specified window. The current value is
/// retained until the window is destroyed. The initial value is null.
///
/// @thread_safety This function may be called from any thread. Access is not synchronized.
///
/// see also: window_userptr, glfw.Window.getUserPointer
pub inline fn setUserPointer(self: Window, Type: anytype, pointer: Type) void {
c.glfwSetWindowUserPointer(self.handle, @ptrCast(*c_void, pointer));
// /// Sets the user pointer of the specified window. // The only error this could return would be glfw.Error.NotInitialized, which should
// /// // definitely have occurred before calls to this. Returning an error here makes the API
// /// This function sets the user-defined pointer of the specified window. The // awkward to use, so we discard it instead.
// /// current value is retained until the window is destroyed. The initial value getError() catch {};
// /// is null. }
// ///
// /// @param[in] window The window whose pointer to set. // TODO(window):
// /// @param[in] pointer The new value.
// ///
// /// Possible errors include glfw.Error.NotInitialized.
// ///
// /// @thread_safety This function may be called from any thread. Access is not
// /// synchronized.
// ///
// /// see also: window_userptr, glfwGetWindowUserPointer
// ///
// GLFWAPI void glfwSetWindowUserPointer(GLFWwindow* window, void* pointer);
// /// Returns the user pointer of the specified window. // /// Returns the user pointer of the specified window.
// /// // ///
@ -1862,3 +1861,22 @@ test "setAttrib" {
window.setAttrib(glfw.decorated, false) catch |err| std.debug.print("can't remove window decorations, not supported by OS maybe? error={}\n", .{err}); window.setAttrib(glfw.decorated, false) catch |err| std.debug.print("can't remove window decorations, not supported by OS maybe? error={}\n", .{err});
} }
test "setUserPointer" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
const window = glfw.Window.create(640, 480, "Hello, Zig!", null, null) catch |err| {
// return without fail, because most of our CI environments are headless / we cannot open
// windows on them.
std.debug.print("note: failed to create window: {}\n", .{err});
return;
};
defer window.destroy();
const T = struct { name: []const u8 };
var my_value = T{ .name = "my window!" };
window.setUserPointer(*T, &my_value);
}