Adding test that shows that B_TRUNCATE_BEGINNING mode is essentially broken.

Worse yet for a small enough length it actually crashes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35379 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kits/interface/Jamfile

@@ -117,6 +117,11 @@ SimpleTest SliderTest :
 	: be $(TARGET_LIBSUPC++)
 	;
 
+SimpleTest TruncateString :
+	TruncateString.cpp
+	: be $(TARGET_LIBSUPC++)
+	;
+
 SimpleTest MenuBeginningTest :
 	MenuBeginningTest.cpp
 	: be $(TARGET_LIBSUPC++)

src/tests/kits/interface/TruncateString.cpp

@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <SupportDefs.h>
+
+#include <Application.h>
+#include <String.h>
+#include <View.h>
+#include <Window.h>
+
+
+class TruncateView : public BView {
+public:
+	TruncateView(BRect frame)
+		:	BView(frame, "TruncateView", B_FOLLOW_ALL, B_WILL_DRAW)
+	{
+	}
+
+	void Draw(BRect updateRect)
+	{
+		const float kSpacing = 20.0;
+		const float kTopOffset = kSpacing + 5;
+		const uint32 kTruncateModes[]
+			= { B_TRUNCATE_BEGINNING, B_TRUNCATE_MIDDLE, B_TRUNCATE_END };
+		const uint32 kTruncateModeCount
+			= sizeof(kTruncateModes) / sizeof(kTruncateModes[0]);
+
+		BString theString("ö-ä-ü");
+		BPoint point(10, kTopOffset);
+		BString truncated;
+
+		for (float length = 25; length < 50; length += 5) {
+			SetHighColor(255, 0, 0);
+			StrokeRect(BRect(point.x, point.y - kSpacing, point.x + length,
+				point.y + kSpacing * (kTruncateModeCount - 1)));
+			SetHighColor(0, 0, 0);
+
+			for (uint32 i = 0; i < kTruncateModeCount; i++) {
+				truncated = theString;
+				TruncateString(&truncated, kTruncateModes[i], length);
+				DrawString(truncated.String(), point);
+				point.y += kSpacing;
+			}
+
+			point.x += length + kSpacing;
+			point.y = kTopOffset;
+		}
+	}
+};
+
+
+int
+main(int argc, char *argv[])
+{
+	BApplication app("application/x-vnd.Haiku-TruncateString");
+
+	BRect frame(200, 200, 600, 400);
+	BWindow *window = new BWindow(frame, "TruncateString", B_TITLED_WINDOW,
+		B_QUIT_ON_WINDOW_CLOSE);
+
+	TruncateView *view = new TruncateView(frame.OffsetToSelf(0, 0));
+	window->AddChild(view);
+
+	window->Show();
+	app.Run();
+	return 0;
+}