Added a new demo: OverlayImage is based on the code presented in this article:

http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer

I applied Haiku's code style, added support for transparent images, a tool tip and
limited localization (how does one make it work in the replicant's about alert?)
Since I'm a c++ newbie, corrections are probably needed and welcome.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37222 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/Jamfile

@@ -36,6 +36,7 @@ HaikuSubInclude mediaconverter ;
 HaikuSubInclude mediaplayer ;
 HaikuSubInclude midiplayer ;
 HaikuSubInclude networkstatus ;
+HaikuSubInclude overlayimage ;
 HaikuSubInclude packageinstaller ;
 HaikuSubInclude pairs ;
 HaikuSubInclude people ;

src/apps/overlayimage/Jamfile

@@ -0,0 +1,16 @@
+SubDir HAIKU_TOP src apps overlayimage ;
+
+Application OverlayImage :
+	OverlayApp.cpp
+	OverlayView.cpp
+	OverlayWindow.cpp
+
+	: be liblocale.so libtranslation.so $(TARGET_LIBSTDC++)
+	: OverlayImage.rdef
+;
+
+DoCatalogs OverlayImage :
+	x-vnd.Haiku-OverlayImage
+	:
+	OverlayWindow.cpp
+;

src/apps/overlayimage/OverlayApp.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger		<humdingerb@gmail.com>
+ */
+
+#include "OverlayApp.h"
+#include "OverlayWindow.h"
+
+
+OverlayApp::OverlayApp()
+	: BApplication("application/x-vnd.Haiku-OverlayImage")
+{
+	be_locale->GetAppCatalog(&fCatalog);
+	
+	OverlayWindow *theWindow = new OverlayWindow();
+	theWindow->Show();
+}
+
+
+int
+main()
+{
+	OverlayApp theApp;
+	theApp.Run();
+	return (0);
+}

src/apps/overlayimage/OverlayApp.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger		<humdingerb@gmail.com>
+ */
+
+#ifndef OVERLAY_APP_H
+#define OVERLAY_APP_H
+
+#include <Application.h>
+#include <Catalog.h>
+#include <Locale.h>
+
+
+class OverlayApp : public BApplication {
+public:
+					OverlayApp();
+private:
+		BCatalog	fCatalog;				
+};
+
+#endif // OVERLAY_APP_H

src/apps/overlayimage/OverlayImage.rdef

@@ -0,0 +1,35 @@
+resource app_signature "application/x-vnd.Haiku-OverlayImage";
+
+resource app_flags B_MULTIPLE_LAUNCH;
+
+resource app_version {
+	major  = 0,
+	middle = 9,
+	minor  = 0,
+
+	/* 0 = development	1 = alpha			2 = beta
+	   3 = gamma		4 = golden master	5 = final */
+	variety = 5,
+
+	internal = 0,
+
+	short_info = "Replicantable Image Viewer",
+	long_info  = "View an image and put it as replicant e.g. on the Desktop"
+};
+
+resource vector_icon {
+	$"6E6369660502000603399E0F3D9C0ABF82B23B84A84B88504870C900F0D733BC"
+	$"FFFEEAFFE0F154050105FF04019203FF00A7050606AE0B284033C3AE2A44BE00"
+	$"C5EC4454543C4430C5A6BACF3E2E3C28020ABB1EBB84BB1EBB84BB1EBB842E3A"
+	$"3038B784BE6B2C40B68DBF7130413A423243404044404242C222BEF54C3E4E40"
+	$"C43EBEAA4E3CC3EFBE67C6B9BDE84A36C673BC10C0FDBB773A3ABF31BC71363C"
+	$"323C343CB8EDBDDB020248404A404640484444444C440202C65EBE74C6D2BE67"
+	$"C5EDBE81C653BF0DC5C5BEDAC6DEBF400A04304A30504250424A080A03010002"
+	$"4014CABE1A903E2F65402966C834CE48FF1D0A01010012BC3AE4C02527402527"
+	$"BC3AE443BD604C697101178400040A00010002BC3FE0C029F24029F2BC3FE043"
+	$"99B24C6BC80A0403010203023F66E5B3B70FB829F03FF40743681746AB1E0A02"
+	$"0104023CF34B3F5F71BFB7D13CAD2B4B19BAC8C4530A010104123CF34B3F5F71"
+	$"BFB7D13CAD2B4B19BAC8C45301178200040A02010402BF34E93E641CBE641CBF"
+	$"34E94CFF874AC2190A01010412BF34E93E641CBE641CBF34E94CFF874AC21901"
+	$"17820004"
+};

src/apps/overlayimage/OverlayView.cpp

@@ -0,0 +1,146 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger		<humdingerb@gmail.com>
+ */
+
+#include "OverlayView.h"
+
+#include <InterfaceDefs.h>
+#include <TextView.h>
+
+const float kDraggerSize = 7;
+	
+
+OverlayView::OverlayView(BRect frame) 
+	:
+	BView(frame, "OverlayImage", B_FOLLOW_NONE, B_WILL_DRAW)
+{
+	fBitmap = NULL;
+	fReplicated = false;
+
+	frame.left = frame.right - kDraggerSize;
+	frame.top = frame.bottom - kDraggerSize;
+	BDragger *dragger = new BDragger(frame, this, B_FOLLOW_RIGHT | B_FOLLOW_BOTTOM);
+	AddChild(dragger);
+	
+	SetViewColor(B_TRANSPARENT_COLOR);
+}
+
+
+OverlayView::OverlayView(BMessage *archive) 
+	:
+	BView(archive)
+{
+	fReplicated = true;
+	fBitmap = new BBitmap(archive);
+}
+
+
+OverlayView::~OverlayView()
+{
+	delete fBitmap;
+}
+
+
+void
+OverlayView::Draw(BRect)
+{
+	SetDrawingMode(B_OP_ALPHA);
+	SetViewColor(B_TRANSPARENT_COLOR);
+
+	if (fBitmap)
+		DrawBitmap(fBitmap, B_ORIGIN);
+}
+
+
+void
+OverlayView::MessageReceived(BMessage *msg)
+{
+	switch (msg->what) {
+		case B_SIMPLE_DATA: 
+		{
+			if (fReplicated)
+				break;
+
+			entry_ref ref;
+			msg->FindRef("refs", &ref);
+			BEntry entry(&ref);
+			BPath path(&entry);
+
+			delete fBitmap;
+			fBitmap = BTranslationUtils::GetBitmap(path.Path());
+			
+			if (fBitmap != NULL) {
+				BRect rect = fBitmap->Bounds();
+				if (!fReplicated)
+					Window()->ResizeTo(rect.right, rect.bottom);
+			
+				ResizeTo(rect.right, rect.bottom);
+				Invalidate();
+			}
+			break;
+		}
+	    case B_ABOUT_REQUESTED:
+	      	OverlayAboutRequested(); 
+    		break; 
+	
+		default:
+			BView::MessageReceived(msg);
+			break;
+	}
+}
+
+
+BArchivable *OverlayView::Instantiate(BMessage *data)
+{
+	return new OverlayView(data);
+}
+
+
+status_t
+OverlayView::Archive(BMessage *archive, bool deep) const
+{
+	BView::Archive(archive, deep);
+
+	archive->AddString("add_on", "application/x-vnd.Haiku-OverlayImage");
+	archive->AddString("class", "OverlayImage");
+
+	if (fBitmap) {
+		fBitmap->Lock();
+		fBitmap->Archive(archive);
+		fBitmap->Unlock();
+	}			
+	//archive->PrintToStream();
+
+	return B_OK;
+}
+
+
+void
+OverlayView::OverlayAboutRequested()
+{
+	BAlert *alert = new BAlert("about",
+		"OverlayImage\n"
+		"Copyright 1999-2010" "\n\n\t"
+		"originally by Seth Flaxman" "\n\t"
+		"modified by Hartmuth Reh" "\n\t"
+		"further modified by Humdinger" "\n",
+		"OK");
+
+	BTextView *view = alert->TextView();
+	BFont font;
+	view->SetStylable(true);
+	view->GetFont(&font);
+	font.SetSize(font.Size() + 4);
+	font.SetFace(B_BOLD_FACE);
+	view->SetFontAndColor(0, 9, &font);
+	alert->Go();
+}

src/apps/overlayimage/OverlayView.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger		<humdingerb@gmail.com>
+ */
+
+#ifndef OVERLAY_VIEW_H
+#define OVERLAY_VIEW_H
+
+#include <stdio.h>
+
+#include <Alert.h>
+#include <Bitmap.h>
+#include <Dragger.h>
+#include <Entry.h>
+#include <Path.h>
+#include <TranslationUtils.h>
+#include <View.h>
+#include <Window.h>
+
+
+class _EXPORT OverlayView;
+
+class OverlayView : public BView {
+public:
+						OverlayView(BRect frame);
+						OverlayView(BMessage *data);
+						~OverlayView();
+	virtual void 		Draw(BRect);
+	virtual void 		MessageReceived(BMessage *msg);
+	static 				BArchivable *Instantiate(BMessage *archive);
+	virtual status_t 	Archive(BMessage *data, bool deep = true) const;
+	void				OverlayAboutRequested();
+
+private:
+	BBitmap				*fBitmap;
+	bool				fReplicated;
+};
+
+#endif // OVERLAY_VIEW_H

src/apps/overlayimage/OverlayWindow.cpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger		<humdingerb@gmail.com>
+ */
+
+#include "OverlayView.h"
+#include "OverlayWindow.h"
+
+#include <Application.h>
+#include <Catalog.h>
+#include <Locale.h>
+#include <String.h>
+#include <TextView.h>
+
+#undef B_TRANSLATE_CONTEXT
+#define B_TRANSLATE_CONTEXT "Main window"
+
+
+OverlayWindow::OverlayWindow() 
+	:
+	BWindow(BRect(100, 100, 450, 350), "OverlayImage", 
+		B_TITLED_WINDOW, B_NOT_RESIZABLE | B_NOT_ZOOMABLE)
+{
+	OverlayView *replView = new OverlayView(Bounds());
+	AddChild(replView);
+
+	BView *bgView = new BView(Bounds(), "bgView", B_FOLLOW_ALL, B_WILL_DRAW);
+	bgView->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
+	AddChild(bgView);
+	
+	BString text;
+	text << B_TRANSLATE("Enable \"Show replicants\" in Deskbar.");
+	text << "\n";
+	text << B_TRANSLATE("Drag & drop an image.");
+	text << "\n";
+	text << B_TRANSLATE("Drag the replicant to the Desktop.");
+	replView->SetToolTip(text);
+}
+
+
+bool
+OverlayWindow::QuitRequested()
+{
+	be_app->PostMessage(B_QUIT_REQUESTED);
+	return true;
+}

src/apps/overlayimage/OverlayWindow.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright 1999-2010, Be Incorporated. All Rights Reserved.
+ * This file may be used under the terms of the Be Sample Code License.
+ *
+ * OverlayImage is based on the code presented in this article:
+ * http://www.haiku-os.org/documents/dev/replishow_a_replicable_image_viewer
+ *
+ * Authors:
+ *			Seth Flexman
+ *			Hartmuth Reh
+ *			Humdinger
+ */
+
+#ifndef OVERLAY_WINDOW_H
+#define OVERLAY_WINDOW_H
+
+#include <Window.h>
+
+
+class OverlayWindow : public BWindow {
+public:
+						OverlayWindow();
+		virtual bool 	QuitRequested();
+};
+
+#endif // OVERLAY_WINDOW_H