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Exercise TextAlignment and TextDirection options.

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the_fiddler 2009-02-12 22:52:24 +00:00
parent 9857e2f13c
commit c18b522763
1 changed files with 22 additions and 17 deletions
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35
Source/Examples/Tutorial/Text.cs
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@ -24,11 +24,10 @@ namespace Examples.Tutorial
public class Text : GameWindow public class Text : GameWindow
{ {
Font serif = new Font(FontFamily.GenericSerif, 16.0f); Font serif = new Font(FontFamily.GenericSerif, 16.0f);
Font sans = new Font(FontFamily.GenericSansSerif, 48.0f, FontStyle.Italic); Font sans = new Font(FontFamily.GenericSansSerif, 18.0f);
TextPrinter text = new TextPrinter(); TextPrinter text = new TextPrinter();
//string poem = new StreamReader("Data/Poem.txt").ReadToEnd(); string poem = new StreamReader("Data/Poem.txt").ReadToEnd();
string poem = "The quick brown fox jumped over the lazy dogs!\n\nKerning: Wo\nLigatures: ffi, fft";
int lines; // How many lines the poem contains. int lines; // How many lines the poem contains.
float scroll_speed; float scroll_speed;
@ -44,7 +43,7 @@ namespace Examples.Tutorial
public override void OnLoad(EventArgs e) public override void OnLoad(EventArgs e)
{ {
GL.ClearColor(Color.SteelBlue); GL.ClearColor(Color.MidnightBlue);
current_position = initial_position; current_position = initial_position;
scroll_speed = -1.0f; scroll_speed = -1.0f;
@ -57,8 +56,7 @@ namespace Examples.Tutorial
if (c == '\n') if (c == '\n')
lines++; lines++;
warparound_position = warparound_position = -(lines + 1) * serif.Height;
-(lines + 1) * serif.Height;
} }
#endregion #endregion
@ -82,9 +80,7 @@ namespace Examples.Tutorial
GL.Viewport(0, 0, Width, Height); GL.Viewport(0, 0, Width, Height);
initial_position = Height + serif.Height; // Start one line below the screen. initial_position = Height + serif.Height; // Start one line below the screen.
warparound_position = -(lines + 1) * serif.Height;
warparound_position =
-(lines + 1) * serif.Height;
} }
#endregion #endregion
@ -94,11 +90,11 @@ namespace Examples.Tutorial
public override void OnUpdateFrame(UpdateFrameEventArgs e) public override void OnUpdateFrame(UpdateFrameEventArgs e)
{ {
if (Keyboard[Key.Space]) if (Keyboard[Key.Space])
scroll_speed = 0.0f; scroll_speed = 0;
if (Keyboard[Key.Down]) if (Keyboard[Key.Down])
scroll_speed += 1; scroll_speed += 10;
if (Keyboard[Key.Up]) if (Keyboard[Key.Up])
scroll_speed -= 1; scroll_speed -= 10;
if (Keyboard[Key.Escape]) if (Keyboard[Key.Escape])
this.Exit(); this.Exit();
} }
@ -111,10 +107,17 @@ namespace Examples.Tutorial
{ {
GL.Clear(ClearBufferMask.ColorBufferBit); GL.Clear(ClearBufferMask.ColorBufferBit);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
GL.Ortho(-1, 1, -1, 1, -1, 1);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
// We'll start printing from the lower left corner of the screen. The text // We'll start printing from the lower left corner of the screen. The text
// will slowly move updwards - the user can control the movement speed with // will slowly move updwards - the user can control the movement speed with
// the keyboard arrows and the space bar. // the keyboard arrows and the space bar.
current_position += scroll_speed * (float)e.ScaleFactor; current_position += scroll_speed * (float)e.Time;
if (scroll_speed > 0.0f && current_position > initial_position) if (scroll_speed > 0.0f && current_position > initial_position)
current_position = warparound_position; current_position = warparound_position;
else if (scroll_speed < 0.0f && current_position < warparound_position) else if (scroll_speed < 0.0f && current_position < warparound_position)
@ -129,10 +132,12 @@ namespace Examples.Tutorial
// Print FPS counter. Since the counter changes per frame, // Print FPS counter. Since the counter changes per frame,
// it shouldn't be cached (TextPrinterOptions.NoCache). // it shouldn't be cached (TextPrinterOptions.NoCache).
text.Print((1.0 / e.Time).ToString("F2"), sans, Color.LightYellow, RectangleF.Empty, TextPrinterOptions.NoCache); text.Print((1.0 / e.Time).ToString("F2"), sans, Color.SpringGreen, new RectangleF(0, 0, Width, 0), TextPrinterOptions.NoCache, TextAlignment.Far);
// Print the actual text. // Print the actual text.
text.Print(poem, serif, Color.White, new RectangleF(0, current_position, 0, 0), TextPrinterOptions.Default); GL.Translate(0, current_position, 0);
text.Print(poem, serif, Color.White, new RectangleF(Width / 2, 0, Width / 2, 0), TextPrinterOptions.Default, TextAlignment.Far);
text.Print(poem, serif, Color.White, new RectangleF(0, 0, Width / 2, 0));
text.End(); text.End();