private void KeyboardWindow_Load(object sender, EventArgs e)
{
int scale = 4;
Bitmap originalCharset = Properties.Resources.default_charset;
int width = originalCharset.Width;
int height = originalCharset.Height;
Bitmap zoomedDisplay = new Bitmap(originalCharset.Width * scale, originalCharset.Height * scale);
Bitmap newBitmap = new Bitmap(width + scale * ((width / 8) - 1), height + scale * ((height / 7) - 1));
textCharactersImage.Size = new Size(zoomedDisplay.Width, zoomedDisplay.Height);
this.Size = new Size(zoomedDisplay.Width + 36, zoomedDisplay.Height + 32);
int x = 0;
int y = 0;
for (int i = 0; i < textCharactersLayout.Length; i++)
{
if (i == 0x30) // skip a space at the start of the 3rd row
{
x++;
}
GraphicsHandler.DrawChar(x * 8 + x * scale, y * 8 + y * scale, textCharactersLayout[i], newBitmap);
x++;
if (x > 15)
{
x = 0;
y++;
}
}
textCharactersImage.Image = newBitmap;
Graphics graphics = Graphics.FromImage(zoomedDisplay);
graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
// draw the upscaled image to the screen
graphics.DrawImage(textCharactersImage.Image, 0, 0, 128 * scale, 64 * scale);
textCharactersImage.Image = zoomedDisplay;
// update screen and clear memory
textCharactersImage.Refresh();
graphics.Dispose();
}
private void UpdateDisplay() // redraws the display to the screen, cannot be in GraphicsHandler due to drawing to the forms elements
{
// start timer to see how long frame takes
Stopwatch frameDrawTime = Stopwatch.StartNew();
// draws the black borders around the main window
GraphicsHandler.DrawBorder();
int[] vram = GLOBAL.VRAM.GetContents(); // gets the characters on screen
// draw each character to the screen
for (int i = 0; i < vram.Length; i++)
{
GraphicsHandler.DrawChar(i % 40, i / 40, vram[i]); // i % 40, i / 40 turns the 1D vram array to 2D co-ordinates for the GraphicsHandler object
}
// gets window size properties
int[] dimensions = GraphicsHandler.GetDimensions();
int width = dimensions[0];
int height = dimensions[1];
int borderSize = GLOBAL.AppConfig.border_size;
int displayScale = GLOBAL.AppConfig.display_scale;
// upscales the output by displayScale with nearest neighbour (for no blurring pixels)
displayPictureBox.Image = GraphicsHandler.DrawCursor(GraphicsHandler.GetDisplay(), GLOBAL.cursorPos[0], GLOBAL.cursorPos[1], cursorVisible);
Graphics graphics = Graphics.FromImage(zoomedDisplay);
graphics.InterpolationMode = InterpolationMode.NearestNeighbor;
// draw the upscaled image to the screen
graphics.DrawImage(displayPictureBox.Image, 0, 0, (width + (borderSize * 2)) * displayScale, (height + (borderSize * 2)) * displayScale);
displayPictureBox.Image = zoomedDisplay;
// update screen and clear memory
displayPictureBox.Refresh();
graphics.Dispose();
// store how long it took to draw that drame
frameDrawTime.Stop();
lastFrameTime = frameDrawTime.Elapsed.TotalMilliseconds;
}