static void Render(Bitmap bmp, PixelQuery query)
{
//lock bitmapData & copy it to buffer
Rectangle area = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData data = bmp.LockBits(area, ImageLockMode.ReadWrite, bmp.PixelFormat);
int bpp = Bitmap.GetPixelFormatSize(bmp.PixelFormat) / 8;
int size = data.Stride * data.Height;
byte[] buffer = new byte[size];
IntPtr ptr = data.Scan0;
Marshal.Copy(ptr, buffer, 0, size);
//query a color for each pixel and write it into the buffer
for (int x = 0; x < bmp.Width; x++)
{
for (int y = 0; y < bmp.Height; y++)
{
Color c = query(x, y);
int i = y * data.Stride + x * bpp;
buffer[i] = c.B;
buffer[i + 1] = c.G;
buffer[i + 2] = c.R;
buffer[i + 3] = c.A;
}
}
//copy buffer back to bitmapData & unlock
Marshal.Copy(buffer, 0, ptr, size);
bmp.UnlockBits(data);
}
/// <summary>
/// method returns the Click Handler
/// </summary>
public void ButtonClickHandler(int buttonNumber, string buttonName)
{
// Hide this
PixelInfo.Visible = false;
// Determine the action by the buttonNumber
switch (buttonNumber)
{
case 1:
// Close the current file
CloseFile();
// required
break;
case 2:
// Save the current file
Save();
// required
break;
case 3:
// Save the current file
SaveAs();
// required
break;
case 4:
// Reset Image
Reset();
// required
break;
case 5:
// Undo the last change
UndoChanges();
// required
break;
case 6:
// Set ColorPickerMode true or false
this.ColorPickerMode = !this.ColorPickerMode;
// We can't be in both at the same time
this.RectangleMode = !ColorPickerMode;
// if not in ColorPickerMode
if (this.ColorPickerMode)
{
// it is on
MessagesLabel.Text = "Color Picker Mode On";
// Hide the control
this.PixelInfo.Visible = false;
}
else
{
// it is on
MessagesLabel.Text = "Color Picker Mode Off";
// Hide the control
this.PixelInfo.Visible = false;
}
// required
break;
case 7:
// Apply Query
// Parse and apply the current query
PixelQuery pixelQuery = PixelDatabase.ApplyQuery(QueryTextBox.Text, this.StatusUpdate);
// Set the Bitmap now that is has been updated
Canvas.BackgroundImage = PixelDatabase.DirectBitmap.Bitmap;
// required
break;
case 8:
// Parse and apply the current query
this.Abort = true;
// required
break;
}
// Refresh everything
Refresh();
Application.DoEvents();
}
/// <summary>
/// This method Set Update Parameters
/// </summary>
public static void SetUpdateParameters(string updateText, ref PixelQuery pixelQuery)
{
// if the updateText exists and the pixelQuery object exists
if ((TextHelper.Exists(updateText)) && (NullHelper.Exists(pixelQuery)))
{
// if the updateText starts with the word set (else this is not a proper BQL Update query).
if (updateText.StartsWith("set"))
{
// only use a space as a delimiter character
char[] delimiterChars = { ' ' };
// Get a list of words from this text
List <Word> words = WordParser.GetWords(updateText);
// If the words collection exists and has one or more items
if (ListHelper.HasOneOrMoreItems(words))
{
// if there are six words.
// Example: Set Color 100 150 200 40 - (Red = 100, Green = 150, Blue = 200, Alpha = 40)
if (words.Count == 6)
{
// Set to red
pixelQuery.Red = NumericHelper.ParseInteger(words[2].Text, -1, -2);
pixelQuery.Green = NumericHelper.ParseInteger(words[3].Text, -1, -2);
pixelQuery.Blue = NumericHelper.ParseInteger(words[4].Text, -1, -2);
pixelQuery.Alpha = NumericHelper.ParseInteger(words[5].Text, -1, -2);
// verify everything is valid
if ((pixelQuery.Red >= 0) && (pixelQuery.Green >= 0) && (pixelQuery.Red >= 0) && (pixelQuery.Alpha >= 0))
{
// Set the Color
pixelQuery.Color = Color.FromArgb(pixelQuery.Alpha, pixelQuery.Red, pixelQuery.Green, pixelQuery.Blue);
}
}
// if there are 5 words
// Example: Set Color 100 150 200 - (Red = 100, Green = 150, Blue = 200, Alpha = 255 default value)
else if (words.Count == 5)
{
// Set to red
pixelQuery.Red = NumericHelper.ParseInteger(words[2].Text, -1, -2);
pixelQuery.Green = NumericHelper.ParseInteger(words[3].Text, -1, -2);
pixelQuery.Blue = NumericHelper.ParseInteger(words[4].Text, -1, -2);
pixelQuery.Alpha = 255;
// verify everything is valid
if ((pixelQuery.Red >= 0) && (pixelQuery.Green >= 0) && (pixelQuery.Red >= 0) && (pixelQuery.Alpha >= 0))
{
// Set the Color
pixelQuery.Color = Color.FromArgb(pixelQuery.Alpha, pixelQuery.Red, pixelQuery.Green, pixelQuery.Blue);
}
// Set the Color
pixelQuery.Color = Color.FromArgb(pixelQuery.Alpha, pixelQuery.Red, pixelQuery.Green, pixelQuery.Blue);
}
// if there are 3 words
// Example: Set Color Orchid (the color must be a named color)
else if (words.Count == 3)
{
// Set the Color
pixelQuery.Color = Color.FromName(words[2].Text);
pixelQuery.Alpha = 255;
}
}
}
}
}
/// <summary>
/// This class is used to parse querries from the queryText given
/// </summary>
public static PixelQuery ParsePixelQuery(string queryText)
{
// initial value
PixelQuery pixelQuery = new PixelQuery();
// locals
int count = 0;
StringBuilder sb = null;
string criteriaText = String.Empty;
string updateText = String.Empty;
// If the queryText string exists
if (TextHelper.Exists(queryText))
{
// get the lowercase version of the text
queryText = queryText.ToLower().Trim();
// parse the ActionType (Show Pixels, Hide Pixels, Draw Line, Update)
pixelQuery.ActionType = ParseActionType(queryText);
// if we are doing an update query, we have to modify this a little
if (pixelQuery.ActionType == ActionTypeEnum.Update)
{
// for an update query, the second line sets the color values to update to
// and the third line starts the where clause.
// Get the text lines
List <TextLine> lines = WordParser.GetTextLines(queryText);
// If the lines collection exists and has one or more items
if (ListHelper.HasOneOrMoreItems(lines))
{
// Create a string builder
sb = new StringBuilder();
// Iterate the collection of TextLine objects
foreach (TextLine line in lines)
{
// Increment the value for count
count++;
// skip the first line, as it is not really needed
if (count > 2)
{
// Add this lines test
sb.Append(line.Text + Environment.NewLine);
}
// if the value of count equals 2
if (count == 2)
{
// Set the UpdateText
updateText = line.Text;
}
}
// Set the criteria text
criteriaText = sb.ToString();
// Parse the Criteria (this is the matching part)
pixelQuery.Criteria = ParseCriteria(criteriaText, pixelQuery.ActionType);
// If the updateText string exists
if (TextHelper.Exists(updateText))
{
// Set the update values
SetUpdateParameters(updateText, ref pixelQuery);
}
}
}
else if (pixelQuery.ActionType == ActionTypeEnum.HideFrom)
{
// hide from (Left, Right, Up, Down, All)
// set the directionsText
string directionsText = queryText.Substring(10).Trim();
// Parse the directions
pixelQuery.Directions = ParseDirections(directionsText);
}
else
{
// This is a Hide or Show Query or DrawLine
// and the second line starts the where clause.
// Parse the Criteria (this is the matching part)
pixelQuery.Criteria = ParseCriteria(queryText, pixelQuery.ActionType);
}
}
// return value
return(pixelQuery);
}
