From 8bd8964052892e8272797f1b59269e125a290af2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stephan=20A=C3=9Fmus?= <superstippi@gmx.de>
Date: Mon, 1 Sep 2008 09:29:11 +0000
Subject: [PATCH] Display the hand cursor over clickable URLs and other
 HyperTextView actions.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27263 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/apps/aboutsystem/HyperTextView.cpp | 58 +++++++++++++++++++++-----
 src/apps/aboutsystem/HyperTextView.h   |  6 +++
 2 files changed, 54 insertions(+), 10 deletions(-)

diff --git a/src/apps/aboutsystem/HyperTextView.cpp b/src/apps/aboutsystem/HyperTextView.cpp
index 3537c7425c..a06910810f 100644
--- a/src/apps/aboutsystem/HyperTextView.cpp
+++ b/src/apps/aboutsystem/HyperTextView.cpp
@@ -5,6 +5,7 @@
 
 #include "HyperTextView.h"
 
+#include <Cursor.h>
 #include <Message.h>
 #include <Region.h>
 #include <Window.h>
@@ -25,6 +26,13 @@ HyperTextAction::~HyperTextAction()
 }
 
 
+void
+HyperTextAction::MouseOver(HyperTextView* view, BPoint where, BMessage* message)
+{
+	view->SetViewCursor(B_CURSOR_SYSTEM_DEFAULT);
+}
+
+
 void
 HyperTextAction::Clicked(HyperTextView* view, BPoint where, BMessage* message)
 {
@@ -106,19 +114,27 @@ HyperTextView::MouseUp(BPoint where)
 {
 	BMessage* message = Window()->CurrentMessage();
 
-	int32 offset = OffsetAt(where);
+	HyperTextAction* action = _ActionAt(where);
+	if (action != NULL)
+		action->Clicked(this, where, message);
+}
 
-	ActionInfo pointer(offset, offset + 1, NULL);
 
-    const ActionInfo* action = fActionInfos->BinarySearch(pointer,
-			ActionInfo::CompareEqualIfIntersecting);
-	if (action != NULL) {
-		// verify that the text region was hit
-		BRegion textRegion;
-		GetTextRegion(action->startOffset, action->endOffset, &textRegion);
-		if (textRegion.Contains(where))
-			action->action->Clicked(this, where, message);
+void
+HyperTextView::MouseMoved(BPoint where, uint32 transit,
+	const BMessage* dragMessage)
+{
+	BMessage* message = Window()->CurrentMessage();
+
+	uint32 buttons;
+	HyperTextAction* action;
+	if (message->FindInt32("buttons", (int32*)&buttons) == B_OK
+		&& buttons == 0 && (action = _ActionAt(where)) != NULL) {
+		action->MouseOver(this, where, message);
+		return;
 	}
+
+	BTextView::MouseMoved(where, transit, dragMessage);
 }
 
 
@@ -160,3 +176,25 @@ HyperTextView::InsertHyperText(const char* inText, int32 inLength,
 
 	AddHyperTextAction(startOffset, endOffset, action);
 }
+
+
+HyperTextAction*
+HyperTextView::_ActionAt(const BPoint& where) const
+{
+	int32 offset = OffsetAt(where);
+
+	ActionInfo pointer(offset, offset + 1, NULL);
+
+    const ActionInfo* action = fActionInfos->BinarySearch(pointer,
+			ActionInfo::CompareEqualIfIntersecting);
+	if (action != NULL) {
+		// verify that the text region was hit
+		BRegion textRegion;
+		GetTextRegion(action->startOffset, action->endOffset, &textRegion);
+		if (textRegion.Contains(where))
+			return action->action;
+	}
+
+	return NULL;
+}
+
diff --git a/src/apps/aboutsystem/HyperTextView.h b/src/apps/aboutsystem/HyperTextView.h
index 57f5c1f669..865d256296 100644
--- a/src/apps/aboutsystem/HyperTextView.h
+++ b/src/apps/aboutsystem/HyperTextView.h
@@ -20,6 +20,8 @@ public:
 								HyperTextAction();
 	virtual						~HyperTextAction();
 
+	virtual	void				MouseOver(HyperTextView* view, BPoint where,
+									BMessage* message);
 	virtual	void				Clicked(HyperTextView* view, BPoint where,
 									BMessage* message);
 };
@@ -35,6 +37,8 @@ public:
 
 	virtual	void				MouseDown(BPoint where);
 	virtual	void				MouseUp(BPoint where);
+	virtual	void				MouseMoved(BPoint where, uint32 transit,
+									const BMessage* dragMessage);
 
 			void				AddHyperTextAction(int32 startOffset,
 									int32 endOffset, HyperTextAction* action);
@@ -46,6 +50,8 @@ public:
 									int32 inLength, HyperTextAction* action,
 									const text_run_array* inRuns = NULL);
 private:
+			HyperTextAction*	_ActionAt(const BPoint& where) const;
+
 			struct ActionInfo;
 			class ActionInfoList;