C# WPF自制简单的批注工具

        stack<strokecollection> undostack = new stack<strokecollection>();//撤销
        stack<strokecollection> recoverstack = new stack<strokecollection>();//恢复撤销
 
        public mainwindow()
        {
            initializecomponent();
            try
            {
                erasercanvas.mousedown += erasercanvas_mousedown;
                erasercanvas.mousemove += erasercanvas_mousemove;
                erasercanvas.mouseup += erasercanvas_mouseup;
 
                
                global.instance.currentcanvas.previewmousedown += writeborad_previewmousedown;
                inkcanvasrootpanel.children.clear();
                inkcanvasrootpanel.children.add(global.instance.currentcanvas);
            }
            catch (exception)
            {
 
            }
 
        }
        private void window_loaded(object sender, routedeventargs e)
        {
            //设置色板和清空橡皮位置
            window window = window.getwindow(rdopen);
            point point = rdopen.transformtoancestor(window).transform(new point(0, 0));
            translatecolor.x = translatecolor.x - 100;
            translateeraser.x = translateeraser.x-30;
 
 
            if (rdopenwidthmin.content.tostring() == global.instance.colorhelper.selectedpenwidth.trim())
                rdopenwidthmin.ischecked = true;
            else if (rdopenwidthmedium.content.tostring() == global.instance.colorhelper.selectedpenwidth.trim())
                rdopenwidthmedium.ischecked = true;
            else if (rdopenwidthmax.content.tostring() == global.instance.colorhelper.selectedpenwidth.trim())
                rdopenwidthmax.ischecked = true;
 
            //初始化色板
            foreach (string color in global.instance.colorhelper.colorlist)
            {
                radiobutton btntemp = new radiobutton();
                btntemp.setresourcereference(styleproperty, "colorselectstyle");
                btntemp.width = 30;
                btntemp.height = 30;
                btntemp.margin = new thickness(2, 2, 2, 0);
                btntemp.background = new solidcolorbrush((system.windows.media.color)colorconverter.convertfromstring(color));
 
                if (btntemp.background.tostring() == global.instance.colorhelper.selectedcolor)
                {
                    btntemp.ischecked = true;
                    global.instance.currentcanvas.defaultdrawingattributes.color =(system.windows.media.color)colorconverter.convertfromstring((string)global.instance.colorhelper.selectedcolor);
                }                    
                uniformcolor.children.add(btntemp);
            }
 
        }
 
 
        #region inkcanvas操作
        bool transformcolorflag = false;
        bool transformeraserclearflag = false;
        private void radiobutton_click(object sender, routedeventargs e)
        {
            //橡皮模式下选择其他工具关闭橡皮擦功能
            erasercanvas.visibility = visibility.collapsed;
            _eraserisdown = false;
 
            //如果色板打开下选择其他工具,隐藏色板工具
            if (!(bool)rdopen.ischecked)
            {
                transformcolorflag = false;
                translatecolor.y = 300;
            }
 
            if (!(bool)rdoeraser.ischecked)
            {
                transformeraserclearflag = false;
                translateeraser.y = 100;
            }
 
            if ((sender as radiobutton).content.tostring() == "画笔")
            {
                //topmost = false;
                this.background = (brush)new brushconverter().convertfromstring("#01000000");
                if (transformcolorflag)
                {
                    translatecolor.y = -10;
                }
                else
                {
                    translatecolor.y = 300;
                }
                transformcolorflag = !transformcolorflag;
                global.instance.currentcanvas.editingmode = inkcanvaseditingmode.ink;
            }
            else if ((sender as radiobutton).content.tostring() == "橡皮")
            {
                this.background = (brush)new brushconverter().convertfromstring("#01000000");
                if (transformeraserclearflag)
                {
                    translateeraser.y = -10;
                }
                else
                {
                    translateeraser.y = 100;
                }
                transformeraserclearflag = !transformeraserclearflag;
 
                global.instance.currentcanvas.editingmode = inkcanvaseditingmode.none;
                erasercanvas.visibility = visibility.visible;
                translatetransform.x = -1000;
                translatetransform.y = -1000;
 
            }
            else if ((sender as radiobutton).content.tostring() == "选择")
            {
                //topmost = true;
                this.background = system.windows.media.brushes.transparent;
                global.instance.currentcanvas.editingmode = inkcanvaseditingmode.none;
                // global.instance.currentcanvas.editingmode = inkcanvaseditingmode.select;
            }
            else if ((sender as radiobutton).content.tostring() == "撤销")
            {
                if (undostack.count > 0)
                {
                    recoverstack.push(global.instance.currentcanvas.strokes.clone());
                     global.instance.currentcanvas.strokes = undostack.pop();
                }
            }
            else if ((sender as radiobutton).content.tostring() == "恢复")
            {
                if (recoverstack.count > 0)
                {
                    undostack.push( global.instance.currentcanvas.strokes.clone());
                     global.instance.currentcanvas.strokes = recoverstack.pop();
                }
            }
        }
        #endregion