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@@ -21,19 +21,43 @@ namespace SketchAssistant
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InitializeComponent();
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}
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+ /**********************************/
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+ /*** CLASS VARIABLES START HERE ***/
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+ /**********************************/
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+
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+ //Different Program States
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+ public enum ProgramState
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+ {
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+ Idle,
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+ Draw
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+ }
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+ //Current Program State
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+ private ProgramState currentState;
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//Dialog to select a file.
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OpenFileDialog openFileDialogLeft = new OpenFileDialog();
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//Image loaded on the left
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Image leftImage = null;
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//Image on the right
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Image rightImage = null;
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+ //Current Line being Drawn
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+ List<Point> currentLine;
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+ //All Lines in the current session
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+ List<Tuple<bool,Line>> lineList = new List<Tuple<bool, Line>>();
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+ //Whether the Mouse is currently pressed in the rightPictureBox
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+ bool mousePressed = false;
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+ //The Position of the Cursor in the right picture box
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+ Point currentCursorPosition;
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+ //The graphic representation of the right image
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+ Graphics graph = null;
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+
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+ /******************************************/
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+ /*** FORM SPECIFIC FUNCTIONS START HERE ***/
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+ /******************************************/
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private void Form1_Load(object sender, EventArgs e)
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{
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+ currentState = ProgramState.Idle;
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this.DoubleBuffered = true;
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- //Connect the Paint event of the left picture box to the event handler method.
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- pictureBoxLeft.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBoxLeft_Paint);
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- pictureBoxRight.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBoxRight_Paint);
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}
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//Resize Function connected to the form resize event, will refresh the form when it is resized
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@@ -41,92 +65,194 @@ namespace SketchAssistant
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{
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this.Refresh();
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}
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-
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- private void pictureBoxLeft_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
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+
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+ //Load button, will open an OpenFileDialog
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+ private void loadToolStripMenuItem_Click(object sender, EventArgs e)
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{
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- //Draw the left image
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- if(leftImage != null)
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+ openFileDialogLeft.Filter = "Image|*.jpg;*.png;*.jpeg";
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+ if(openFileDialogLeft.ShowDialog() == DialogResult.OK)
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{
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+ toolStripLoadStatus.Text = openFileDialogLeft.SafeFileName;
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+ leftImage = Image.FromFile(openFileDialogLeft.FileName);
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pictureBoxLeft.Image = leftImage;
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+ //Refresh the left image box when the content is changed
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+ this.Refresh();
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}
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}
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- private void pictureBoxRight_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
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+ //Changes The State of the Program to drawing
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+ private void drawButton_Click(object sender, EventArgs e)
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{
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- //Draw the right image
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- if (rightImage != null)
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+ if(rightImage != null)
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{
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- pictureBoxRight.Image = rightImage;
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+ if (currentState.Equals(ProgramState.Draw))
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+ {
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+ ChangeState(ProgramState.Idle);
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+ }
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+ else
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+ {
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+ ChangeState(ProgramState.Draw);
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+ }
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}
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}
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- // A Table Layout with one row and two columns.
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- // Columns are 50% so that the window is evenly split.
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- // The size is manually set relative to the window size.
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- // TODO: Maybe change this to automatically be the size of a parent container...
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- private void tableLayoutPanel1_Paint(object sender, PaintEventArgs e)
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+ //get current Mouse positon within the right picture box
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+ private void pictureBoxRight_MouseMove(object sender, MouseEventArgs e)
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{
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-
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+ currentCursorPosition = ConvertCoordinates(new Point(e.X, e.Y));
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}
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- private void fileToolStripMenuItem_Click(object sender, EventArgs e)
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+ //hold left mouse button to draw.
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+ private void pictureBoxRight_MouseDown(object sender, MouseEventArgs e)
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{
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-
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- }
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-
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- //Load button, will open an OpenFileDialog
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- private void loadToolStripMenuItem_Click(object sender, EventArgs e)
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- {
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- openFileDialogLeft.Filter = "Image|*.jpg;*.png;*.jpeg";
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- if(openFileDialogLeft.ShowDialog() == DialogResult.OK)
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+ mousePressed = true;
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+ if (currentState.Equals(ProgramState.Draw))
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{
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- toolStripLoadStatus.Text = openFileDialogLeft.SafeFileName;
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- leftImage = Image.FromFile(openFileDialogLeft.FileName);
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- //Refresh the left image box when the content is changed
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- this.Refresh();
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- pictureBoxLeft.Refresh();
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+ currentLine = new List<Point>();
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}
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}
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- private void toolStripStatusLabel1_Click(object sender, EventArgs e)
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+ //Lift left mouse button to stop drawing.
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+ private void pictureBoxRight_MouseUp(object sender, MouseEventArgs e)
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{
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-
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+ mousePressed = false;
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+ if (currentState.Equals(ProgramState.Draw))
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+ {
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+ lineList.Add(new Tuple<bool, Line>(true, new Line(currentLine)));
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+ }
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}
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- private void statusStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
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+ //Button to create a new Canvas. Will create an empty image
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+ //which is the size of the left image, if there is one.
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+ //If there is no image loaded the canvas will be the size of the right picture box
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+ private void canvasButton_Click(object sender, EventArgs e)
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{
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-
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+ DrawEmptyCanvas();
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}
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- private void pictureBoxLeft_Click(object sender, EventArgs e)
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+ //add a Point on every tick to the Drawpath
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+ private void drawTimer_Tick(object sender, EventArgs e)
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{
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-
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+ if (currentState.Equals(ProgramState.Draw) && mousePressed)
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+ {
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+ currentLine.Add(currentCursorPosition);
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+ Line drawline = new Line(currentLine);
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+ drawline.DrawLine(graph);
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+ pictureBoxRight.Image = rightImage;
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+ }
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}
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- //Button to create a new Canvas. Will create an empty image
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- //which is the size of the left image, if there is one.
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- //If there is no image loaded the canvas will be the size of the right picture box
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- private void toolStripButton1_Click(object sender, EventArgs e)
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+ /***********************************/
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+ /*** HELPER FUNCTIONS START HERE ***/
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+ /***********************************/
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+
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+ /// <summary>
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+ /// Creates an empty Canvas
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+ /// </summary>
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+ private void DrawEmptyCanvas()
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{
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if (leftImage == null)
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{
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rightImage = new Bitmap(pictureBoxRight.Width, pictureBoxRight.Height);
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- using (Graphics grp = Graphics.FromImage(rightImage))
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- {
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- grp.FillRectangle(Brushes.White, 0, 0, pictureBoxRight.Width + 10, pictureBoxRight.Height + 10);
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- }
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+ graph = Graphics.FromImage(rightImage);
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+ graph.FillRectangle(Brushes.White, 0, 0, pictureBoxRight.Width + 10, pictureBoxRight.Height + 10);
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+ pictureBoxRight.Image = rightImage;
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}
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else
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{
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rightImage = new Bitmap(leftImage.Width, leftImage.Height);
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- using (Graphics grp = Graphics.FromImage(rightImage))
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+ graph = Graphics.FromImage(rightImage);
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+ graph.FillRectangle(Brushes.White, 0, 0, leftImage.Width + 10, leftImage.Height + 10);
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+ pictureBoxRight.Image = rightImage;
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+ }
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+ this.Refresh();
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+ pictureBoxRight.Refresh();
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+ }
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+
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+ /// <summary>
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+ /// Redraws all lines in lineList, for which their associated boolean value equals true.
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+ /// </summary>
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+ private void RedrawRightImage()
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+ {
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+ DrawEmptyCanvas();
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+ foreach (Tuple<bool, Line> lineBoolTuple in lineList)
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+ {
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+ if (lineBoolTuple.Item1)
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{
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- grp.FillRectangle(Brushes.White, 0, 0, leftImage.Width + 10, leftImage.Height + 10);
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+ lineBoolTuple.Item2.DrawLine(graph);
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}
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}
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- this.Refresh();
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+ }
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+
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+ /// <summary>
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+ /// A helper function which handles tasks associated witch changing states,
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+ /// such as checking and unchecking buttons and changing the state.
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+ /// </summary>
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+ /// <param name="newState">The new state of the program</param>
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+ private void ChangeState(ProgramState newState)
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+ {
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+ switch (currentState)
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+ {
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+ case ProgramState.Draw:
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+ drawButton.CheckState = CheckState.Unchecked;
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+ drawTimer.Enabled = false;
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+ break;
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+ default:
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+ break;
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+ }
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+ switch (newState)
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+ {
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+ case ProgramState.Draw:
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+ drawButton.CheckState = CheckState.Checked;
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+ drawTimer.Enabled = true;
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+ break;
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+ default:
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+ break;
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+ }
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+ currentState = newState;
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pictureBoxRight.Refresh();
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}
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-
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+
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+ /// <summary>
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+ /// A function that calculates the coordinates of a point on a zoomed in image.
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+ /// </summary>
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+ /// <param name="">The position of the mouse cursor</param>
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+ /// <returns>The real coordinates of the mouse cursor on the image</returns>
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+ private Point ConvertCoordinates(Point cursorPosition)
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+ {
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+ Point realCoordinates = new Point(5,3);
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+ if(pictureBoxRight.Image == null)
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+ {
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+ return cursorPosition;
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+ }
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+
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+ int widthImage = pictureBoxRight.Image.Width;
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+ int heightImage = pictureBoxRight.Image.Height;
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+ int widthBox = pictureBoxRight.Width;
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+ int heightBox = pictureBoxRight.Height;
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+
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+ float imageRatio = (float)widthImage / (float)heightImage;
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+ float containerRatio = (float)widthBox / (float)heightBox;
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+
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+ if (imageRatio >= containerRatio)
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+ {
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+ //Image is wider than it is high
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+ float zoomFactor = (float)widthImage / (float)widthBox;
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+ float scaledHeight = heightImage / zoomFactor;
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+ float filler = (heightBox - scaledHeight) / 2;
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+ realCoordinates.X = (int)(cursorPosition.X * zoomFactor);
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+ realCoordinates.Y = (int)((cursorPosition.Y - filler) * zoomFactor);
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+ }
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+ else
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+ {
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+ //Image is higher than it is wide
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+ float zoomFactor = (float)heightImage / (float)heightBox;
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+ float scaledWidth = widthImage / zoomFactor;
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+ float filler = (widthBox - scaledWidth) / 2;
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+ realCoordinates.X = (int)((cursorPosition.X - filler) * zoomFactor);
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+ realCoordinates.Y = (int)(cursorPosition.Y * zoomFactor);
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+ }
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+ return realCoordinates;
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+ }
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}
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}
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m-edlund