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glfw: add Monitor.setUserPointer, Monitor.getUserPointer

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2021-07-17 12:58:02 -07:00
parent d57a53df49
commit 003a1db2e6
1 changed files with 53 additions and 1 deletions
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54
glfw/src/Monitor.zig
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@ -140,7 +140,47 @@ pub fn getContentScale(self: Monitor) Error!ContentScale {
///
/// see also: monitor_properties
pub fn getName(self: Monitor) Error![*c]const u8 {
return c.glfwGetMonitorName(self.handle);
const name = c.glfwGetMonitorName(self.handle);
try getError();
return name;
}
/// Sets the user pointer of the specified monitor.
///
/// This function sets the user-defined pointer of the specified monitor. The current value is
/// retained until the monitor is disconnected.
///
/// This function may be called from the monitor callback, even for a monitor that is being
/// disconnected.
///
/// Possible errors include glfw.Error.NotInitialized.
///
/// @thread_safety This function may be called from any thread. Access is not synchronized.
///
/// see also: monitor_userptr, glfw.Monitor.getUserPointer
pub fn setUserPointer(self: Monitor, comptime T: type, ptr: *T) Error!void {
c.glfwSetMonitorUserPointer(self.handle, ptr);
try getError();
}
/// Returns the user pointer of the specified monitor.
///
/// This function returns the current value of the user-defined pointer of the specified monitor.
///
/// This function may be called from the monitor callback, even for a monitor that is being
/// disconnected.
///
/// Possible errors include glfw.Error.NotInitialized.
///
/// @thread_safety This function may be called from any thread. Access is not
/// synchronized.
///
/// see also: monitor_userptr, glfw.Monitor.setUserPointer
pub fn getUserPointer(self: Monitor, comptime T: type) Error!?*T {
const ptr = c.glfwGetMonitorUserPointer(self.handle);
try getError();
if (ptr == null) return null;
return @ptrCast(*T, @alignCast(@alignOf(*T), ptr.?));
}
/// Returns the currently connected monitors.
@ -229,3 +269,15 @@ test "getName" {
_ = try m.getName();
}
}
test "userPointer" {
const monitor = try getPrimary();
if (monitor) |m| {
var p = try m.getUserPointer(u32);
try testing.expect(p == null);
var x: u32 = 5;
try m.setUserPointer(u32, &x);
p = try m.getUserPointer(u32);
try testing.expectEqual(p.?.*, 5);
}
}