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- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
- using System.Drawing;
- namespace SketchAssistant
- {
- public class MVP_Presenter
- {
- /// <summary>
- /// The View of the MVP-Model, in this case Form1.
- /// </summary>
- MVP_View programView;
- /// <summary>
- /// The Model of the MVP-Model.
- /// </summary>
- MVP_Model programModel;
- /*******************/
- /*** ENUMERATORS ***/
- /*******************/
- public enum MouseAction
- {
- Click,
- Down,
- Up,
- Move
- }
- /***********************/
- /*** CLASS VARIABLES ***/
- /***********************/
- /// <summary>
- /// Instance of FileImporter to handle drawing imports.
- /// </summary>
- private FileImporter fileImporter;
- public MVP_Presenter(MVP_View form)
- {
- programView = form;
- programModel = new MVP_Model(this);
- //Initialize Class Variables
- fileImporter = new FileImporter();
- }
- /***********************************/
- /*** FUNCTIONS VIEW -> PRESENTER ***/
- /***********************************/
- /// <summary>
- /// Pass-trough function to update the appropriate information of the model, when the window is resized.
- /// </summary>
- /// <param name="leftPBS">The new size of the left picture box.</param>
- /// <param name="rightPBS">The new size of the left picture box.</param>
- public void Resize(Tuple<int, int> leftPBS,Tuple<int, int> rightPBS)
- {
- programModel.leftImageBoxWidth = leftPBS.Item1;
- programModel.leftImageBoxHeight = leftPBS.Item2;
- programModel.rightImageBoxWidth = rightPBS.Item1;
- programModel.rightImageBoxHeight = rightPBS.Item2;
- programModel.UpdateSizes();
- }
- /// <summary>
- /// Display a new FileDialog to load a collection of lines.
- /// </summary>
- public void ExamplePictureToolStripMenuItemClick()
- {
- var okToContinue = true;
- if (programModel.HasUnsavedProgress())
- {
- okToContinue = programView.ShowWarning("You have unsaved progress. Continue?");
- }
- if (okToContinue)
- {
- var fileNameTup = programView.openNewDialog("Interactive Sketch-Assistant Drawing|*.isad");
- if (!fileNameTup.Item1.Equals("") && !fileNameTup.Item2.Equals(""))
- {
- programView.SetToolStripLoadStatus(fileNameTup.Item2);
- (int, int, List<Line>) values = fileImporter.ParseISADInputFile(fileNameTup.Item1);
- programModel.SetLeftLineList(values.Item1, values.Item2, values.Item3);
- programModel.ChangeState(true);
- programView.EnableTimer();
- }
- }
- }
- /// <summary>
- /// Pass-trough function to change the drawing state of the model.
- /// </summary>
- /// <param name="NowDrawing">Indicates if the program is in drawing (true) or deletion (false) mode.</param>
- public void ChangeState(bool NowDrawing)
- {
- programModel.ChangeState(NowDrawing);
- }
- /// <summary>
- /// Pass-trough function to undo an action.
- /// </summary>
- public void Undo()
- {
- programModel.Undo();
- }
- /// <summary>
- /// Pass-trough function to redo an action.
- /// </summary>
- public void Redo()
- {
- programModel.Redo();
- }
- /// <summary>
- /// Checks if there is unsaved progress, and promts the model to generate a new canvas if not.
- /// </summary>
- public void NewCanvas()
- {
- var okToContinue = true;
- if (programModel.HasUnsavedProgress())
- {
- okToContinue = programView.ShowWarning("You have unsaved progress. Continue?");
- }
- if (okToContinue)
- {
- programModel.DrawEmptyCanvasRight();
- programModel.ChangeState(true);
- programView.EnableTimer();
- }
- }
- /// <summary>
- /// Pass-trough function for ticking the model.
- /// </summary>
- public void Tick()
- {
- programModel.Tick();
- }
- /// <summary>
- /// Pass-trough function that calls the correct Mouse event of the model.
- /// </summary>
- /// <param name="mouseAction">The action which is sent by the View.</param>
- /// <param name="e">The Mouse event arguments.</param>
- public void MouseEvent(MouseAction mouseAction, MouseEventArgs e)
- {
- switch (mouseAction)
- {
- case MouseAction.Click:
- break;
- case MouseAction.Down:
- programModel.MouseDown();
- break;
- case MouseAction.Up:
- programModel.MouseUp();
- break;
- case MouseAction.Move:
- programModel.SetCurrentCursorPosition(ConvertCoordinates(new Point(e.X, e.Y)));
- break;
- }
- }
- /************************************/
- /*** FUNCTIONS MODEL -> PRESENTER ***/
- /************************************/
- /// <summary>
- /// Called by the model when the state of the Program changes.
- /// Changes the look of the UI according to the current state of the model.
- /// </summary>
- /// <param name="inDrawingMode">If the model is in Drawing Mode</param>
- /// <param name="canUndo">If actions in the model can be undone</param>
- /// <param name="canRedo">If actions in the model can be redone</param>
- /// <param name="imageLoaded">If an image is loaded in the model</param>
- public void UpdateUIState(bool inDrawingMode, bool canUndo, bool canRedo, bool imageLoaded)
- {
- Dictionary<String, Form1.ButtonState> dict = new Dictionary<String, Form1.ButtonState> {
- {"canvasButton", Form1.ButtonState.Enabled }, {"drawButton", Form1.ButtonState.Disabled}, {"deleteButton",Form1.ButtonState.Disabled },
- {"undoButton", Form1.ButtonState.Disabled },{"redoButton", Form1.ButtonState.Disabled}};
- if (imageLoaded)
- {
- if (inDrawingMode)
- {
- dict["drawButton"] = Form1.ButtonState.Active;
- dict["deleteButton"] = Form1.ButtonState.Enabled;
- }
- else
- {
- dict["drawButton"] = Form1.ButtonState.Enabled;
- dict["deleteButton"] = Form1.ButtonState.Active;
- }
- if (canUndo){dict["undoButton"] = Form1.ButtonState.Enabled;}
- if (canRedo){dict["redoButton"] = Form1.ButtonState.Enabled;}
- }
- foreach(KeyValuePair<String, Form1.ButtonState> entry in dict)
- {
- programView.SetToolStripButtonStatus(entry.Key, entry.Value);
- }
- }
- /// <summary>
- /// Is called by the model when the left image is changed.
- /// </summary>
- /// <param name="img">The new image.</param>
- public void UpdateLeftImage(Image img)
- {
- programView.DisplayInLeftPictureBox(img);
- }
- /// <summary>
- /// Is called by the model when the right image is changed.
- /// </summary>
- /// <param name="img">The new image.</param>
- public void UpdateRightImage(Image img)
- {
- programView.DisplayInRightPictureBox(img);
- }
- /// <summary>
- /// Pass-trough function to display an info message in the view.
- /// </summary>
- /// <param name="msg">The message.</param>
- public void PassMessageToView(String msg)
- {
- programView.ShowInfoMessage(msg);
- }
- /// <summary>
- /// Pass-trough function to update the display of the last action taken.
- /// </summary>
- /// <param name="msg">The new last action taken.</param>
- public void PassLastActionTaken(String msg)
- {
- programView.SetLastActionTakenText(msg);
- }
- /*************************/
- /*** HELPING FUNCTIONS ***/
- /*************************/
- /// <summary>
- /// A function that calculates the coordinates of a point on a zoomed in image.
- /// </summary>
- /// <param name="">The position of the mouse cursor</param>
- /// <returns>The real coordinates of the mouse cursor on the image</returns>
- private Point ConvertCoordinates(Point cursorPosition)
- {
- var rightImageDimensions = programModel.GetRightImageDimensions();
- Point realCoordinates = new Point(0, 0);
- int widthImage = rightImageDimensions.Item1;
- int heightImage = rightImageDimensions.Item2;
- int widthBox = programModel.rightImageBoxWidth;
- int heightBox = programModel.rightImageBoxHeight;
- if (heightImage == 0 && widthImage == 0)
- {
- return cursorPosition;
- }
- float imageRatio = (float)widthImage / (float)heightImage;
- float containerRatio = (float)widthBox / (float)heightBox;
- if (imageRatio >= containerRatio)
- {
- //Image is wider than it is high
- float zoomFactor = (float)widthImage / (float)widthBox;
- float scaledHeight = heightImage / zoomFactor;
- float filler = (heightBox - scaledHeight) / 2;
- realCoordinates.X = (int)(cursorPosition.X * zoomFactor);
- realCoordinates.Y = (int)((cursorPosition.Y - filler) * zoomFactor);
- }
- else
- {
- //Image is higher than it is wide
- float zoomFactor = (float)heightImage / (float)heightBox;
- float scaledWidth = widthImage / zoomFactor;
- float filler = (widthBox - scaledWidth) / 2;
- realCoordinates.X = (int)((cursorPosition.X - filler) * zoomFactor);
- realCoordinates.Y = (int)(cursorPosition.Y * zoomFactor);
- }
- return realCoordinates;
- }
- }
- }
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