tests/app_server: test some AGGTextRenderer paths

Change-Id: I099029590f5d9ee5d86fa0701c3858fc4f630df7
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9128
Reviewed-by: waddlesplash <[email protected]>

src/tests/servers/app/text_rendering/Jamfile

@@ -9,7 +9,11 @@ SimpleTest TextRendering :
 	main.cpp
 	: be [ TargetLibstdc++ ] [ TargetLibsupc++ ] ;
 
+SimpleTest TextRenderer :
+	renderer.cpp
+	: be [ TargetLibstdc++ ] [ TargetLibsupc++ ] ;
+
 if ( $(TARGET_PLATFORM) = libbe_test ) {
-	HaikuInstall install-test-apps : $(HAIKU_APP_TEST_DIR) : TextRendering
+	HaikuInstall install-test-apps : $(HAIKU_APP_TEST_DIR) : TextRendering TextRenderer
 		: tests!apps ;
 }

src/tests/servers/app/text_rendering/renderer.cpp

@@ -0,0 +1,167 @@
+#include <Application.h>
+#include <CheckBox.h>
+#include <GridView.h>
+#include <LayoutBuilder.h>
+#include <ScrollView.h>
+#include <Shape.h>
+#include <StringView.h>
+#include <View.h>
+#include <Window.h>
+
+
+#define NO_AA(x)		(((x) & 1) != 0)
+#define DECORATION(x)	(((x) & 2) != 0)
+#define USE_OFFSETS(x)	(((x) & 4) != 0)
+#define VECTOR(x)		(((x) & 8) != 0)
+
+#define CHANGE_AA 'chaa'
+
+static const BString kText = "De fฝbug ";
+	// 'ฝ' is a character needing a fallback font
+
+extern void set_subpixel_antialiasing(bool subpix);
+extern status_t get_subpixel_antialiasing(bool* subpix);
+
+
+BString
+test_description(int test)
+{
+	BString description;
+	if (NO_AA(test))
+		description << "No antialias\n";
+	else
+		description << "Antialias\n";
+	if (DECORATION(test))
+		description << "With line\n";
+	else
+		description << "No line\n";
+	if (USE_OFFSETS(test))
+		description << "Offsets\n";
+	else
+		description << "Start point\n";
+	if (VECTOR(test))
+		description << "Vector";
+	else
+		description << "Scan";
+	return description;
+}
+
+
+class View : public BView {
+public:
+	View(int clip, int test)
+		:
+		BView(BRect(0, 0, 40, 50), "", 0, B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE),
+		fClip(clip)
+	{
+		BFont font;
+		GetFont(&font);
+		font.SetSize(28);
+			// Greater than 30 forces vector data
+		if (NO_AA(test))
+			font.SetFlags(B_DISABLE_ANTIALIASING);
+		if (DECORATION(test))
+			font.SetFace(font.Face() | B_STRIKEOUT_FACE);
+		SetFont(&font);
+		fOffsets = USE_OFFSETS(test);
+		fVector = VECTOR(test);
+	}
+
+	void Draw(BRect)
+	{
+		BRect clipRect = Bounds().InsetByCopy(10, 5);
+		BShape s;
+
+		switch (fClip) {
+			case 1:
+				ClipToRect(clipRect);
+				break;
+			case 2:
+				s.MoveTo(clipRect.LeftTop());
+				s.LineTo(clipRect.RightBottom());
+				s.LineTo(clipRect.RightTop());
+				s.LineTo(clipRect.LeftBottom());
+				s.Close();
+				ClipToShape(&s);
+				break;
+		}
+		SetLowUIColor(B_PANEL_BACKGROUND_COLOR);
+		FillRect(Bounds().InsetByCopy(1, 1), B_SOLID_LOW);
+
+		if (fVector)
+			RotateBy(0.09);
+
+		if (fOffsets) {
+			int len = kText.CountChars();
+			BPoint offsets[len];
+			for (int i = 0; i < len; i++)
+				offsets[i].Set(3 + 18 * i, 40);
+			DrawString(kText, offsets, len);
+		} else {
+			DrawString(kText, BPoint(3, 40));
+		}
+	}
+
+private:
+			int		fClip;
+			bool	fOffsets;
+			bool	fVector;
+};
+
+
+class App : public BApplication {
+public:
+	App()
+		:
+		BApplication("application/x-vnd.haiku.text-renderer-test")
+	{
+		BWindow* window = new BWindow(BRect(100, 100, 640, 400), "Text renderer test",
+			B_TITLED_WINDOW, B_QUIT_ON_WINDOW_CLOSE);
+
+		BGridView* grid = new BGridView();
+		grid->SetResizingMode(B_FOLLOW_ALL_SIDES);
+
+		BLayoutBuilder::Grid<> layout(grid);
+		layout.SetInsets(B_USE_DEFAULT_SPACING);
+
+		fSubpixelAA = new BCheckBox("Subpixel AA", new BMessage(CHANGE_AA));
+		bool subpixel;
+		get_subpixel_antialiasing(&subpixel);
+		fSubpixelAA->SetValue(subpixel);
+		fSubpixelAA->SetTarget(this);
+		layout.Add(fSubpixelAA, 0, 0);
+
+		for (int test = 0; test < 16; test++) {
+			layout.Add(new BStringView("", test_description(test)), 0, test + 1);
+
+			for (int clip = 0; clip <= 2; clip++)
+				layout.Add(new View(clip, test), clip + 1, test + 1);
+		}
+
+		BScrollView* scroll
+			= new BScrollView("scroll", grid, B_FOLLOW_ALL_SIDES, 0, false, true, B_NO_BORDER);
+		window->AddChild(scroll);
+		scroll->ResizeTo(window->Bounds().Size());
+		window->Show();
+	}
+
+	void MessageReceived(BMessage* message)
+	{
+		if (message->what == CHANGE_AA)
+			set_subpixel_antialiasing(fSubpixelAA->Value());
+		else
+			BApplication::MessageReceived(message);
+	}
+
+private:
+			BControl*		fSubpixelAA;
+};
+
+
+int
+main(int argc, char** argv)
+{
+	App app;
+	app.Run();
+	return 0;
+}