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AlexanderProAlexanderPro
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Issues #16 Added Magnifier area
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‎WindowTextExtractor/Controls/Magnifier.Designer.cs

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‎WindowTextExtractor/Controls/Magnifier.cs

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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Drawing;
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using System.Diagnostics;
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using WindowTextExtractor.Utils;
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using WindowTextExtractor.Native;
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using WindowTextExtractor.Native.Enums;
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namespace WindowTextExtractor.Controls
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{
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public partial class Magnifier : UserControl
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{
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private bool _draw;
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private decimal _factor;
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private Point _cursorPosition;
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[Browsable(true)]
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[Category("Appearance")]
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[Description("Gets or sets border color.")]
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[DefaultValue("Black")]
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public Color BorderColor { get; set; }
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[Browsable(true)]
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[Category("Appearance")]
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[Description("Gets or sets border width.")]
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[DefaultValue("1")]
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public Single BorderWidth { get; set; }
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public Magnifier()
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{
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InitializeComponent();
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_draw = false;
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_factor = 0;
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_cursorPosition = Point.Empty;
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}
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public void Draw(Point cursorPosition, decimal factor)
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{
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_cursorPosition = cursorPosition;
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_factor = factor;
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_draw = true;
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Invalidate();
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}
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public void Clear()
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{
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_draw = false;
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Invalidate();
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}
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[DebuggerStepThrough]
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protected override void OnPaint(PaintEventArgs e)
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{
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base.OnPaint(e);
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if (_draw)
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{
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var scaleFactor = DPIUtils.ScaleFactor(this, _cursorPosition) / 100;
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var hdcMagnifier = e.Graphics.GetHdc();
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var hwndDesktop = User32.GetDesktopWindow();
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var hdcDesktop = User32.GetDC(hwndDesktop);
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var srcX = (int)Math.Round(((_cursorPosition.X - (Width * scaleFactor / _factor / 2) + 1)), 2);
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var srcY = (int)Math.Round(((_cursorPosition.Y - (Height * scaleFactor / _factor / 2) + 1)), 2);
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var srcWidth = (int)Math.Round(((Width * scaleFactor / _factor)), 2);
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var srcHeight = (int)Math.Round(((Height * scaleFactor / _factor)), 2);
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Gdi32.StretchBlt(hdcMagnifier, 0, 0, Width, Height, hdcDesktop, srcX, srcY, srcWidth, srcHeight, CopyPixelOperations.CaptureBlt | CopyPixelOperations.MergeCopy | CopyPixelOperations.Blackness);
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e.Graphics.ReleaseHdc(hdcMagnifier);
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User32.ReleaseDC(hwndDesktop, hdcDesktop);
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using var borderBrush = new SolidBrush(BorderColor);
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using var borderPen = new Pen(borderBrush, BorderWidth);
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var groupBox = this;
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var textSize = e.Graphics.MeasureString(groupBox.Text, groupBox.Font);
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var rect = new Rectangle(groupBox.ClientRectangle.X,
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groupBox.ClientRectangle.Y + (int)(textSize.Height / 2),
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groupBox.ClientRectangle.Width - 1,
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groupBox.ClientRectangle.Height - (int)(textSize.Height / 2) - 1);
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//e.Graphics.Clear(BackColor);
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e.Graphics.DrawLine(borderPen, rect.Location, new Point(rect.X, rect.Y + rect.Height));
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e.Graphics.DrawLine(borderPen, new Point(rect.X + rect.Width, rect.Y), new Point(rect.X + rect.Width, rect.Y + rect.Height));
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e.Graphics.DrawLine(borderPen, new Point(rect.X, rect.Y + rect.Height), new Point(rect.X + rect.Width, rect.Y + rect.Height));
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e.Graphics.DrawLine(borderPen, new Point(rect.X, rect.Y), new Point(rect.X + groupBox.Padding.Left, rect.Y));
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e.Graphics.DrawLine(borderPen, new Point(rect.X + groupBox.Padding.Left + (int)(textSize.Width), rect.Y), new Point(rect.X + rect.Width, rect.Y));
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}
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}
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}
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}

‎WindowTextExtractor/Controls/Magnifier.resx

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<?xml version="1.0" encoding="utf-8"?>
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<root>
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<!--
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Microsoft ResX Schema
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Version 2.0
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The primary goals of this format is to allow a simple XML format
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that is mostly human readable. The generation and parsing of the
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various data types are done through the TypeConverter classes
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associated with the data types.
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Example:
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... ado.net/XML headers & schema ...
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<resheader name="resmimetype">text/microsoft-resx</resheader>
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<resheader name="version">2.0</resheader>
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<resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
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<resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
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<data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
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<data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
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<data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
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<value>[base64 mime encoded serialized .NET Framework object]</value>
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</data>
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<data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
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<value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
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<comment>This is a comment</comment>
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</data>
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There are any number of "resheader" rows that contain simple
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name/value pairs.
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Each data row contains a name, and value. The row also contains a
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type or mimetype. Type corresponds to a .NET class that support
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text/value conversion through the TypeConverter architecture.
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Classes that don't support this are serialized and stored with the
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mimetype set.
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The mimetype is used for serialized objects, and tells the
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ResXResourceReader how to depersist the object. This is currently not
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extensible. For a given mimetype the value must be set accordingly:
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Note - application/x-microsoft.net.object.binary.base64 is the format
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that the ResXResourceWriter will generate, however the reader can
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read any of the formats listed below.
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mimetype: application/x-microsoft.net.object.binary.base64
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value : The object must be serialized with
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: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
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: and then encoded with base64 encoding.
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mimetype: application/x-microsoft.net.object.soap.base64
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value : The object must be serialized with
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: System.Runtime.Serialization.Formatters.Soap.SoapFormatter
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: and then encoded with base64 encoding.
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mimetype: application/x-microsoft.net.object.bytearray.base64
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value : The object must be serialized into a byte array
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: using a System.ComponentModel.TypeConverter
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: and then encoded with base64 encoding.
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-->
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<xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
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<xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
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<xsd:element name="root" msdata:IsDataSet="true">
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<xsd:complexType>
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<xsd:choice maxOccurs="unbounded">
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<xsd:element name="metadata">
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<xsd:complexType>
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<xsd:sequence>
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<xsd:element name="value" type="xsd:string" minOccurs="0" />
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</xsd:sequence>
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<xsd:attribute name="name" use="required" type="xsd:string" />
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<xsd:attribute name="type" type="xsd:string" />
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<xsd:attribute name="mimetype" type="xsd:string" />
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<xsd:attribute ref="xml:space" />
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="assembly">
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<xsd:complexType>
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<xsd:attribute name="alias" type="xsd:string" />
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<xsd:attribute name="name" type="xsd:string" />
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="data">
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<xsd:complexType>
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<xsd:sequence>
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<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
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<xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
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</xsd:sequence>
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<xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
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<xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
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<xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
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<xsd:attribute ref="xml:space" />
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</xsd:complexType>
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</xsd:element>
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<xsd:element name="resheader">
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<xsd:complexType>
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<xsd:sequence>
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<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
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</xsd:sequence>
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<xsd:attribute name="name" type="xsd:string" use="required" />
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</xsd:complexType>
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</xsd:element>
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</xsd:choice>
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</xsd:complexType>
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</xsd:element>
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</xsd:schema>
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<resheader name="resmimetype">
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<value>text/microsoft-resx</value>
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</resheader>
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<resheader name="version">
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<value>2.0</value>
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</resheader>
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<resheader name="reader">
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<value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
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</resheader>
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<resheader name="writer">
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<value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
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</resheader>
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</root>

‎WindowTextExtractor/Forms/MagnifierForm.Designer.cs

+86
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‎WindowTextExtractor/Forms/MagnifierForm.cs

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using System;
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using System.Windows.Forms;
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namespace WindowTextExtractor.Forms
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{
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partial class MagnifierForm : Form
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{
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public decimal Factor { get; private set; }
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public MagnifierForm(decimal factor)
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{
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InitializeComponent();
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Factor = factor;
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numericFactor.Value = factor;
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}
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private void ButtonOkClick(object sender, EventArgs e)
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{
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Factor = (int)numericFactor.Value;
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DialogResult = DialogResult.OK;
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Close();
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}
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private void FormKeyDown(object sender, KeyEventArgs e)
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{
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if (e.KeyValue == 13)
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{
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ButtonOkClick(sender, e);
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}
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if (e.KeyValue == 27)
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{
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Close();
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}
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}
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}
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}

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