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Form1.cs
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Form1.cs
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using System.Xml;
namespace SubtitleViewer
{
public partial class Form1 : Form
{
public string subtitle_file = "";
public string image_file = "";
bool IsMaximized = false;
float font_size = 12f;
int page = 0;
int pages = 0;
string[] lines;
Bitmap? img = null;
Font font;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//
this.WindowState = FormWindowState.Maximized;
IsMaximized = true;
if (!string.IsNullOrEmpty(subtitle_file))
{
try
{
lines = File.ReadAllLines(subtitle_file);
pages = lines.Length;
}
catch (Exception ex)
{
MessageBox.Show("Error loading subtitle file: " + ex.Message);
}
}
if (!string.IsNullOrEmpty(image_file))
{
try
{
img = new Bitmap(image_file);
pages++;
}
catch (Exception ex)
{
MessageBox.Show("Error loading image: " + ex.Message);
}
}
font = new Font("Arial", font_size);
}
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
//
if (e.KeyCode == Keys.F11)
{
if (IsMaximized)
{
this.WindowState = FormWindowState.Normal;
IsMaximized = false;
Redraw();
}
else
{
this.WindowState = FormWindowState.Maximized;
IsMaximized = true;
Redraw();
}
}
else if (e.KeyCode == Keys.Escape)
{
this.Close();
}
else if (e.KeyCode == Keys.Add || e.KeyCode == Keys.Right)
{
font_size += 2;
font.Dispose();
font = new Font("Arial", font_size);
Redraw();
}
else if ((e.KeyCode == Keys.Subtract || e.KeyCode == Keys.Left)&& font_size > 8)
{
font_size -= 2;
font.Dispose();
font = new Font("Arial", font_size);
Redraw();
}
else if (e.KeyCode == Keys.PageDown || e.KeyCode == Keys.Down)
{
if (page < (pages-1))
{
page++;
Redraw();
}
}
else if (e.KeyCode == Keys.PageUp || e.KeyCode == Keys.Up)
{
if (page > 0)
{
page--;
Redraw();
}
}
else if (e.KeyCode == Keys.A)
{
page = 0;
Redraw();
}
else if (e.KeyCode == Keys.Z)
{
page = pages-1;
Redraw();
}
else if (e.KeyCode == Keys.F1)
{
MessageBox.Show("F11: Toggle Fullscreen\nEscape: Close\n+/- or Left/Right: Increase/Decrease Font Size\nUp/Down or PageUp/Page Down: Previous/next line\nA/Z Beginning/The End");
}
}
private void Redraw()
{
panel1.Invalidate();
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
if (string.IsNullOrEmpty(subtitle_file))
{
g.DrawString("Please provide a subtitle file and optional image file", font, Brushes.Orange, new PointF(10, 10));
}
else
{
if (img!=null && page == 0)
{
g.DrawImage(img, 0, 0, panel1.Width, panel1.Height);
}
else
{
int idx = page;
if (img != null)
{
idx--;
}
string str = lines[idx];
int colon_index = str.IndexOf(':');
if (colon_index > 0)
{
string actor = str.Substring(0, colon_index+1);
int actor_string_length_in_pixels = (int)g.MeasureString(actor, font).Width;
g.DrawString(actor, font, Brushes.Yellow, new PointF(10, 10));
str = str.Substring(colon_index + 1);
DrawTextString(g, str, actor_string_length_in_pixels + 10, 10);
}
else
{
DrawTextString(g, str, 10, 10);
}
}
}
}
private void DrawTextString(Graphics g, string str, int x, int y)
{
SizeF size = g.MeasureString(str, font);
int string_length_in_pixels = (int)size.Width;
int string_height_in_pixels = (int)size.Height;
int available_room = panel1.Width - x;
if (string_length_in_pixels > available_room)
{
int last_space = FindLastIndexThatWoudlFit(str,g,available_room);
if (last_space > 0)
{
string first_line = str.Substring(0, last_space);
g.DrawString(first_line, font, Brushes.White, new PointF(x, y));
if (last_space < str.Length)
{
string second_line = " " + str.Substring(last_space + 1);
DrawTextString(g, second_line, x, y + string_height_in_pixels);
}
}
else
{
g.DrawString(str, font, Brushes.White, new PointF(x, y));
}
}
else
{
g.DrawString(str, font, Brushes.White, new PointF(x, y));
}
}
private int FindLastIndexThatWoudlFit(string str, Graphics g, int available_room)
{
string current_str = str;
while (true)
{
// measure current_str in pizels with font
SizeF size = g.MeasureString(current_str, font);
int string_length_in_pixels = (int)size.Width;
if (string_length_in_pixels < available_room)
{
return current_str.Length;
}
else
{
int last_space = current_str.LastIndexOf(' ');
if (last_space > 0)
{
current_str = current_str.Substring(0, last_space);
}
else
{
return current_str.Length;
}
}
}
}
}
}