main.cpp revision 98bad22a2b68bc559864ca69327e8c72bce4f15c
1// main.cpp
2
3#include <stdio.h>
4#include <string.h>
5
6#include <Application.h>
7#include <Archivable.h>
8#include <Dragger.h>
9#include <File.h>
10#include <Message.h>
11#include <View.h>
12#include <Window.h>
13
14static const char* kAppSignature = "application/x.vnd-Haiku.ArchivedView";
15
16class TestView : public BView {
17
18 public:
19							TestView(BRect frame, const char* name,
20									 uint32 resizeFlags, uint32 flags);
21
22							TestView(BMessage* archive);
23
24	virtual	status_t		Archive(BMessage* into, bool deep = true) const;
25
26	static	BArchivable*	Instantiate(BMessage* archive);
27
28	virtual	void			AttachedToWindow();
29	virtual	void			DetachedFromWindow();
30
31	virtual	void			Draw(BRect updateRect);
32
33 private:
34			int32			fData;
35};
36
37
38// constructor
39TestView::TestView(BRect frame, const char* name,
40				   uint32 resizeFlags, uint32 flags)
41	: BView(frame, name, resizeFlags, flags),
42	  fData(42)
43{
44	SetViewColor(216, 216, 216);
45
46	BRect r = Bounds();
47	r.top = r.bottom - 7;
48	r.left = r.right - 7;
49	BDragger *dw = new BDragger(r, this, 0);
50	AddChild(dw);
51}
52
53// constructor
54TestView::TestView(BMessage* archive)
55	: BView(archive)
56{
57	if (archive->FindInt32("data", &fData) < B_OK)
58		fData = 5;
59
60	printf("data: %ld\n", fData);
61}
62
63// AttachedToWindow
64void
65TestView::AttachedToWindow()
66{
67}
68
69// DetachedFromWindow
70void
71TestView::DetachedFromWindow()
72{
73	BFile file("/tmp/archived_view",
74			   B_CREATE_FILE | B_ERASE_FILE | B_WRITE_ONLY);
75	status_t err = file.InitCheck();
76	if (err != B_OK) {
77		printf("error creating file for archiving: %s\n", strerror(err));
78		return;
79	}
80	BMessage archive;
81	err = Archive(&archive);
82	if (err != B_OK) {
83		printf("error archiving: %s\n", strerror(err));
84		return;
85	}
86	err = archive.Flatten(&file);
87	if (err != B_OK) {
88		printf("error flattening: %s\n", strerror(err));
89		return;
90	}
91}
92
93// Draw
94void
95TestView::Draw(BRect updateRect)
96{
97printf("TestView::Draw(");
98updateRect.PrintToStream();
99	BRect r(Bounds());
100
101	rgb_color light = tint_color(ViewColor(), B_LIGHTEN_2_TINT);
102	rgb_color shadow = tint_color(ViewColor(), B_DARKEN_2_TINT);
103
104	BeginLineArray(4);
105		AddLine(r.LeftTop(), r.RightTop(), light);
106		AddLine(r.RightTop(), r.RightBottom(), shadow);
107		AddLine(r.RightBottom(), r.LeftBottom(), shadow);
108		AddLine(r.LeftBottom(), r.LeftTop(), light);
109	EndLineArray();
110}
111
112// Archive
113status_t
114TestView::Archive(BMessage* into, bool deep = true) const
115{
116	status_t ret = BView::Archive(into, deep);
117
118	if (ret == B_OK)
119		ret = into->AddInt32("data", fData);
120
121	if (ret == B_OK)
122		ret = into->AddString("add_on", kAppSignature);
123
124	if (ret == B_OK)
125		ret = into->AddString("class", "TestView");
126
127	return ret;
128}
129
130// Instantiate
131BArchivable *
132TestView::Instantiate(BMessage* archive)
133{
134	if (!validate_instantiation(archive , "TestView"))
135		return NULL;
136
137	return new TestView(archive);
138}
139
140// #pragma mark -
141
142// show_window
143void
144show_window(BRect frame, const char* name)
145{
146	BWindow* window = new BWindow(frame, name,
147								  B_TITLED_WINDOW,
148								  B_ASYNCHRONOUS_CONTROLS | B_QUIT_ON_WINDOW_CLOSE);
149
150	BView* view = NULL;
151	BFile file("/tmp/archived_view", B_READ_ONLY);
152	if (file.InitCheck() == B_OK) {
153		printf("found archive file\n");
154		BMessage archive;
155		if (archive.Unflatten(&file) == B_OK) {
156			printf("unflattened archive message\n");
157			BArchivable* archivable = instantiate_object(&archive);
158			view = dynamic_cast<BView*>(archivable);
159			if (view)
160				printf("instatiated BView\n");
161		}
162	}
163
164	if (!view)
165		view = new TestView(window->Bounds(), "test", B_FOLLOW_ALL, B_WILL_DRAW);
166
167	window->Show();
168
169	window->Lock();
170	window->AddChild(view);
171	window->Unlock();
172}
173
174// main
175int
176main(int argc, char** argv)
177{
178	BApplication* app = new BApplication(kAppSignature);
179
180	BRect frame(50.0, 50.0, 300.0, 250.0);
181	show_window(frame, "BView Archiving Test");
182
183	app->Run();
184
185	delete app;
186	return 0;
187}
188