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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| using System.Runtime.InteropServices; | ||
|
|
||
| namespace NickvisionMoney.GNOME.Helpers; | ||
|
|
||
| /// <summary> | ||
| /// Helper methods for GDK | ||
| /// </summary> | ||
| public static partial class GdkHelpers | ||
| { | ||
| [LibraryImport("libadwaita-1.so.0", StringMarshalling = StringMarshalling.Utf8)] // Using "gdk" doesn't work here for some reason | ||
| [return: MarshalAs(UnmanagedType.I1)] | ||
| private static partial bool gdk_rgba_parse(out RGBA rgba, string spec); | ||
| [LibraryImport("libadwaita-1.so.0", StringMarshalling = StringMarshalling.Utf8)] // Using "gdk" doesn't work here for some reason | ||
| private static partial string gdk_rgba_to_string(ref RGBA rgba); | ||
|
|
||
| /// <summary> | ||
| /// Helper RGBA struct. Used instead of Gdk.RGBA | ||
| /// </summary> | ||
| [StructLayout(LayoutKind.Sequential)] | ||
| public struct RGBA | ||
| { | ||
| /// <summary> | ||
| /// Red channel (0.0-1.0) | ||
| /// </summary> | ||
| public float Red; | ||
| /// <summary> | ||
| /// Green channel (0.0-1.0) | ||
| /// </summary> | ||
| public float Green; | ||
| /// <summary> | ||
| /// Blue channel (0.0-1.0) | ||
| /// </summary> | ||
| public float Blue; | ||
| /// <summary> | ||
| /// Alpha channel (0.0-1.0) | ||
| /// </summary> | ||
| public float Alpha; | ||
|
|
||
| /// <summary> | ||
| /// Helper method to parse color string to GdkExt.RGBA struct | ||
| /// </summary> | ||
| /// <param name="colorRGBA">Struct to write to</param> | ||
| /// <param name="spec">Color string</param> | ||
| /// <returns>Whether or not the string was parsed successfully</returns> | ||
| public static bool Parse(out RGBA? colorRGBA, string spec) | ||
| { | ||
| if (gdk_rgba_parse(out var val, spec)) | ||
| { | ||
| colorRGBA = val; | ||
| return true; | ||
| } | ||
| colorRGBA = null; | ||
| return false; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Gets a string representation of the RGBA | ||
| /// </summary> | ||
| /// <returns>The string representation of the RGBA</returns> | ||
| public override string ToString() => gdk_rgba_to_string(ref this); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Runtime.InteropServices; | ||
| using System.Threading.Tasks; | ||
|
|
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| namespace NickvisionMoney.GNOME.Helpers; | ||
|
|
||
| /// <summary> | ||
| /// Helper methods for GTK | ||
| /// </summary> | ||
| public unsafe static partial class GtkHelpers | ||
| { | ||
| [LibraryImport("libadwaita-1.so.0", StringMarshalling = StringMarshalling.Utf8)] | ||
| private static partial void gtk_color_dialog_button_set_rgba(nint button, ref GdkHelpers.RGBA rgba); | ||
|
|
||
| /// <summary> | ||
| /// Helper extension method for Gtk.ColorButton to get color as GdkHelpers.RGBA | ||
| /// </summary> | ||
| /// <param name="button">Color button</param> | ||
| /// <returns>Color as GdkHelpers.RGBA</returns> | ||
| public static GdkHelpers.RGBA GetExtRgba(this Gtk.ColorDialogButton button) => Marshal.PtrToStructure<GdkHelpers.RGBA>(button.GetRgba().Handle.DangerousGetHandle()); | ||
|
|
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| /// <summary> | ||
| /// Helper extension method for Gtk.ColorButton to set color as GdkHelpers.RGBA | ||
| /// </summary> | ||
| /// <param name="button">Color button</param> | ||
| /// <param name="color">Color as GdkHelpers.RGBA</param> | ||
| public static void SetExtRgba(this Gtk.ColorDialogButton button, GdkHelpers.RGBA color) => gtk_color_dialog_button_set_rgba(button.Handle, ref color); | ||
|
|
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| /// <summary> | ||
| /// Extension method for Gtk.ColorDialog to choose a color | ||
| /// </summary> | ||
| /// <param name="dialog">Color dialog</param> | ||
| /// <param name="parent">Parent window</param> | ||
| /// <exception cref="Exception">Thrown if failed to choose a color</exception> | ||
| /// <returns>Color struct if successful, or null</returns> | ||
| public static Task<GdkHelpers.RGBA?> ChooseRgbaAsync(this Gtk.ColorDialog dialog, Gtk.Window parent) | ||
| { | ||
| var tcs = new TaskCompletionSource<GdkHelpers.RGBA?>(); | ||
|
|
||
| var callback = new Gio.Internal.AsyncReadyCallbackAsyncHandler((sourceObject, res, data) => | ||
| { | ||
| if (sourceObject is null) | ||
| { | ||
| tcs.SetException(new Exception("Missing source object")); | ||
| } | ||
| else | ||
| { | ||
| var color = Gtk.Internal.ColorDialog.ChooseRgbaFinish(sourceObject.Handle, res.Handle, out var error); | ||
| if (!error.IsInvalid) | ||
| { | ||
| tcs.SetException(new Exception(error.ToString() ?? "")); | ||
| } | ||
| else if (color.DangerousGetHandle() == IntPtr.Zero) | ||
| { | ||
| tcs.SetResult(null); | ||
| } | ||
| else | ||
| { | ||
| tcs.SetResult(Marshal.PtrToStructure<GdkHelpers.RGBA>(color.DangerousGetHandle())); | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| Gtk.Internal.ColorDialog.ChooseRgba( | ||
| self: dialog.Handle, | ||
| parent: parent.Handle, | ||
| initialColor: new Gdk.Internal.RGBAOwnedHandle(IntPtr.Zero), | ||
| cancellable: IntPtr.Zero, | ||
| callback: callback.NativeCallback, | ||
| userData: IntPtr.Zero | ||
| ); | ||
|
|
||
| return tcs.Task; | ||
| } | ||
| } |
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