/* -------------------------------------------------------------------------------
* Constructor: Form1
*
* Use: Constructs a new Dirived Form object.
*
* Parameters: none
* -------------------------------------------------------------------------------*/
public Form1()
{
InitializeComponent();
//Generate a new graphics object for displaying images
g = DrawPanel.CreateGraphics();
//Creates a new bitmap that is the same size as the drawing field, and sets it to all white
Canvas = new Bitmap(DrawPanel.Size.Width, DrawPanel.Size.Height);
DrawPanel.DrawToBitmap(Canvas, new Rectangle(0, 0, DrawPanel.Size.Width, DrawPanel.Size.Height));
//Generate a new graphics object for saving images
bitmapg = Graphics.FromImage(Canvas);
//Initialize Variables.
DrawCurrentColor = Color.Black;
DrawBackgroundColor = Color.White;
BackgroundButton.BackColor = Color.White;
RecentFiles.Add(SaveHold1);
RecentFiles.Add(SaveHold2);
RecentFiles.Add(SaveHold3);
RecentFiles.Add(SaveHold4);
RecentFiles.Add(SaveHold5);
}
/* -------------------------------------------------------------------------------
* Function: newToolStripMenuItem_Click
*
* Use: Clears the currently Drawn Image
*
* Parameters: Sender: Refrence to the object that called this function
* EventArgs: The auguments passed from the calling object
*
* Returns: nothing
* -------------------------------------------------------------------------------*/
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
//If anything is drawn, or if the user hasn't saved, ask if they would like to
if (AnythingDrawn)
{
if (MessageBox.Show("Would you like to save your progress?", "Save?", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
saveToolStripMenuItem_Click(sender, e);
}
}
//save Current filename for most recent files
if (CurrentSaveName != null)
{
if (PositionInRecentFileArray == 5)
{
PositionInRecentFileArray = 0;
}
RecentFiles[PositionInRecentFileArray].Text = CurrentSaveName;
RecentFiles[PositionInRecentFileArray].Enabled = true;
PositionInRecentFileArray++;
CurrentSaveName = null;
}
//Reset anythingdrawn flag & defaults
AnythingDrawn = false;
DrawBackgroundColor = Color.White;
BackgroundButton.BackColor = Color.White;
//reset resources
Canvas.Dispose();
Canvas = new Bitmap(DrawPanel.Size.Width, DrawPanel.Size.Height);
bitmapg.Dispose();
//clear stacks
while (RedoStack.Any())
{
RedoStack.Pop().Dispose();
}
while (UndoStack.Any())
{
UndoStack.Pop().Dispose();
}
//reset buttons
RedoButton.Enabled = false;
UndoButton.Enabled = false;
//this works because the "CreateGraphics" is not persistent & DrawPanel will always be 'blank'
DrawPanel.DrawToBitmap(Canvas, new Rectangle(0, 0, DrawPanel.Size.Width, DrawPanel.Size.Height));
bitmapg = Graphics.FromImage(Canvas);
//Redraw our canvas on drawpanel
g.DrawImage(Canvas, Point.Empty);
}
// save file and update recent image after saveFile dialog
private void SaveAsFileOk(object sender, CancelEventArgs e)
{
var width = DrawPanel.Width;
var height = DrawPanel.Height;
Bitmap bm = new Bitmap(width, height);
DrawPanel.DrawToBitmap(bm, new Rectangle(0, 0, width, height));
bm.Save(SaveFile.FileName, ImageFormat.Png);
MessageBox.Show("Your file has been saved!");
fileName = SaveFile.FileName;
UpdateRecent(SaveFile.FileName);
}
// save the image and update Recent image tool strip menu item
private void Save(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(fileName))
{
SaveAs(sender, e); //if string is empty it means it's a new project and we need to call save as
}
else
{
var width = DrawPanel.Width;
var height = DrawPanel.Height;
Bitmap bm = new Bitmap(width, height);
DrawPanel.DrawToBitmap(bm, new Rectangle(0, 0, width, height));
if (File.Exists(fileName)) // if file name exists, delete the file
{
File.Delete(fileName);
}
bm.Save(fileName, ImageFormat.Png);
MessageBox.Show("Your file has been saved!");
UpdateRecent(fileName);
}
}