Пример #1
0
        /// <summary>
        /// Left mouse button is pressed
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseDown(DrawArea drawArea, MouseEventArgs e)
        {
            commandChangeState = null;
            wasMove = false;

            selectMode = SelectionMode.None;
            Point point = new Point(e.X, e.Y);

            // Test for resizing (only if control is selected, cursor is on the handle)
            foreach (DrawObject o in drawArea.GraphicsList.Selection)
            {
                int handleNumber = o.HitTest(point);

                if (handleNumber > 0)
                {
                    selectMode = SelectionMode.Size;

                    // keep resized object in class member
                    resizedObject = o;
                    resizedObjectHandle = handleNumber;

                    // Since we want to resize only one object, unselect all other objects
                    drawArea.GraphicsList.UnselectAll();
                    o.Selected = true;

                    commandChangeState = new CommandChangeState(drawArea.GraphicsList);

                    break;
                }
            }

            // Test for move (cursor is on the object)
            if ( selectMode == SelectionMode.None )
            {
                int n1 = drawArea.GraphicsList.Count;
                DrawObject o = null;

                for ( int i = 0; i < n1; i++ )
                {
                    if ( drawArea.GraphicsList[i].HitTest(point) == 0 )
                    {
                        o = drawArea.GraphicsList[i];
                        break;
                    }
                }

                if ( o != null )
                {
                    selectMode = SelectionMode.Move;

                    // Unselect all if Ctrl is not pressed and clicked object is not selected yet
                    if ( ( Control.ModifierKeys & Keys.Control ) == 0  && !o.Selected )
                        drawArea.GraphicsList.UnselectAll();

                    // Select clicked object
                    o.Selected = true;

                    commandChangeState = new CommandChangeState(drawArea.GraphicsList);

                    drawArea.Cursor = Cursors.SizeAll;
                }
            }

            // Net selection
            if ( selectMode == SelectionMode.None )
            {
                // click on background
                if ( ( Control.ModifierKeys & Keys.Control ) == 0 )
                    drawArea.GraphicsList.UnselectAll();

                selectMode = SelectionMode.NetSelection;

            }

            lastPoint.X = e.X;
            lastPoint.Y = e.Y;
            startPoint.X = e.X;
            startPoint.Y = e.Y;

            drawArea.Capture = true;

            drawArea.Refresh();

            if ( selectMode == SelectionMode.NetSelection )
            {
                // Draw selection rectangle in initial position
                ControlPaint.DrawReversibleFrame(
                    drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
                    Color.Black,
                    FrameStyle.Dashed);
            }
        }
Пример #2
0
        /// <summary>
        /// Show Properties dialog. Return true if list is changed
        /// </summary>
        /// <param name="parent"></param>
        /// <returns></returns>
        public bool ShowPropertiesDialog(DrawArea parent)
        {
            if (SelectionCount < 1)
                return false;

            GraphicsProperties properties = GetProperties();
            PropertiesDialog dlg = new PropertiesDialog();
            dlg.Properties = properties;

            CommandChangeState c = new CommandChangeState(this);

            if (dlg.ShowDialog(parent) != DialogResult.OK)
                return false;

            if ( ApplyProperties(properties) )
            {
                c.NewState(this);
                parent.AddCommandToHistory(c);
            }

            return true;
        }
Пример #3
0
        /// <summary>
        /// Right mouse button is released
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public override void OnMouseUp(DrawArea drawArea, MouseEventArgs e)
        {
            if ( selectMode == SelectionMode.NetSelection )
            {
                // Remove old selection rectangle
                ControlPaint.DrawReversibleFrame(
                    drawArea.RectangleToScreen(DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint)),
                    Color.Black,
                    FrameStyle.Dashed);

                // Make group selection
                drawArea.GraphicsList.SelectInRectangle(
                    DrawRectangle.GetNormalizedRectangle(startPoint, lastPoint));

                selectMode = SelectionMode.None;
            }

            if ( resizedObject != null )
            {
                // after resizing
                resizedObject.Normalize();
                resizedObject = null;
            }

            drawArea.Capture = false;
            drawArea.Refresh();

            if ( commandChangeState != null  && wasMove )
            {
                // Keep state after moving/resizing and add command to history
                commandChangeState.NewState(drawArea.GraphicsList);
                drawArea.AddCommandToHistory(commandChangeState);
                commandChangeState = null;
            }
        }