Appearance and Terminal: Move ColorPreview to shared

Move ColorListView and ColorItem to shared in BPrivate namespace.

ColorItem typedef to BPrivate::BColorItem for apps that are already
using this class.

Gravity screensaver:
* ColorItem => BColorItem.
* Use make_color() to set colors.

Make color drop message name agnostic, check for B_RGB_COLOR_TYPE.
Add be:sender and source to drag message.

Add _SetTermColors() convenience method to set colors on all tabs.

Change-Id: I5a9f55d3ab423ccaa341997cf444603373024553
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8846
Reviewed-by: John Scipione <[email protected]>

headers/private/shared/ColorItem.h

@@ -1,10 +1,7 @@
 /*
- * Copyright 2016-2022 Haiku, Inc. All rights reserved.
+ * Copyright 2016-2024 Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  *
- * Authors:
- *		John Scipione, [email protected]
- *
  * Based on ColorWhichItem by DarkWyrm ([email protected])
  */
 #ifndef _COLOR_ITEM_H
@@ -15,17 +12,32 @@
 #include <StringItem.h>
 
 
-class ColorItem : public BStringItem {
+namespace BPrivate {
+
+
+class BColorItem : public BStringItem {
 public:
-							ColorItem(const char* string, rgb_color color);
+							BColorItem(const char* text, rgb_color color);
+							BColorItem(const char* text, color_which which, rgb_color color);
 
 	virtual	void			DrawItem(BView* owner, BRect frame, bool complete);
-			void			SetColor(rgb_color color) { fColor = color; }
-			rgb_color		Color() const { return fColor; }
+
+			void			SetColor(rgb_color color) { fColor = color; };
+			rgb_color		Color() { return fColor; };
+
+			color_which		ColorWhich() { return fColorWhich; };
 
 private:
 			rgb_color		fColor;
+			color_which		fColorWhich;
 };
 
 
-#endif	// _COLOR_ITEM_H
+} // namespace BPrivate
+
+
+// remove once apps have been updated to use BColorItem
+typedef BPrivate::BColorItem ColorItem;
+
+
+#endif // _COLOR_ITEM_H

headers/private/shared/ColorListView.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2016-2024 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		DarkWyrm, [email protected]
+ *		John Scipione, [email protected]
+ */
+#ifndef _COLOR_LIST_VIEW_H
+#define _COLOR_LIST_VIEW_H
+
+
+#include <ListView.h>
+
+
+namespace BPrivate {
+
+
+class BColorListView : public BListView {
+public:
+	enum {
+		B_MESSAGE_SET_CURRENT_COLOR		= 'sccl',
+		B_MESSAGE_SET_COLOR				= 'sclr'
+	};
+
+								BColorListView(const char* name,
+									list_view_type type = B_SINGLE_SELECTION_LIST,
+									uint32 flags = B_WILL_DRAW | B_FRAME_EVENTS | B_NAVIGABLE);
+	virtual						~BColorListView();
+
+	virtual	bool				InitiateDrag(BPoint where, int32 index,
+									bool wasSelected);
+	virtual	void				MessageReceived(BMessage* message);
+};
+
+
+} // namespace BPrivate
+
+
+#endif // _COLOR_LIST_VIEW_H

headers/private/shared/ColorPreview.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2009-2024 Haiku, Inc. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _COLOR_PREVIEW_H
+#define _COLOR_PREVIEW_H
+
+
+#include <Control.h>
+
+
+class BMessage;
+class BMessageRunner;
+
+
+namespace BPrivate {
+
+
+class BColorPreview : public BControl {
+public:
+								BColorPreview(const char* name, const char* label,
+									BMessage* message, uint32 flags = B_WILL_DRAW);
+	virtual						~BColorPreview();
+
+	virtual	void				Draw(BRect updateRect);
+	virtual	status_t			Invoke(BMessage* message = NULL);
+	virtual	void				MessageReceived(BMessage *message);
+	virtual	void				MouseDown(BPoint where);
+	virtual	void				MouseMoved(BPoint where, uint32 transit, const BMessage* message);
+	virtual	void				MouseUp(BPoint where);
+
+			rgb_color			Color() const;
+			void				SetColor(rgb_color color);
+
+private:
+			void				_DragColor(BPoint where);
+
+			rgb_color			fColor;
+
+			BMessageRunner*		fMessageRunner;
+};
+
+
+} // namespace BPrivate
+
+
+#endif // _COLOR_PREVIEW_H