Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / WinForms / Managed / System / WinForms / TextBoxRenderer.cs / 1 / TextBoxRenderer.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Drawing; using System.Diagnostics.CodeAnalysis; using System.Windows.Forms.Internal; using System.Windows.Forms.VisualStyles; using Microsoft.Win32; ////// /// public sealed class TextBoxRenderer { //Make this per-thread, so that different threads can safely use these methods. [ThreadStatic] private static VisualStyleRenderer visualStyleRenderer = null; private static readonly VisualStyleElement TextBoxElement = VisualStyleElement.TextBox.TextEdit.Normal; //cannot instantiate private TextBoxRenderer() { } ////// This is a rendering class for the TextBox control. /// ////// /// public static bool IsSupported { get { return VisualStyleRenderer.IsSupported; // no downlevel support } } private static void DrawBackground(Graphics g, Rectangle bounds, TextBoxState state) { visualStyleRenderer.DrawBackground(g, bounds); if (state != TextBoxState.Disabled) { Color windowColor = visualStyleRenderer.GetColor(ColorProperty.FillColor); if (windowColor != SystemColors.Window) { Rectangle fillRect = visualStyleRenderer.GetBackgroundContentRectangle(g, bounds); //then we need to re-fill the background. g.FillRectangle(new SolidBrush(SystemColors.Window), fillRect); } } } ////// Returns true if this class is supported for the current OS and user/application settings, /// otherwise returns false. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static void DrawTextBox(Graphics g, Rectangle bounds, TextBoxState state) { InitializeRenderer((int)state); DrawBackground(g, bounds, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, TextBoxState state) { DrawTextBox(g, bounds, textBoxText, font, TextFormatFlags.TextBoxControl, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, Rectangle textBounds, TextBoxState state) { DrawTextBox(g, bounds, textBoxText, font, textBounds, TextFormatFlags.TextBoxControl, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, TextFormatFlags flags, TextBoxState state) { InitializeRenderer((int)state); Rectangle textBounds = visualStyleRenderer.GetBackgroundContentRectangle(g, bounds); textBounds.Inflate(-2, -2); DrawTextBox(g, bounds, textBoxText, font, textBounds, flags, state); } ////// Renders a TextBox control. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, Rectangle textBounds, TextFormatFlags flags, TextBoxState state) { InitializeRenderer((int)state); DrawBackground(g, bounds, state); Color textColor = visualStyleRenderer.GetColor(ColorProperty.TextColor); TextRenderer.DrawText(g, textBoxText, font, textBounds, textColor, flags); } private static void InitializeRenderer(int state) { if (visualStyleRenderer == null) { visualStyleRenderer = new VisualStyleRenderer(TextBoxElement.ClassName, TextBoxElement.Part, state); } else { visualStyleRenderer.SetParameters(TextBoxElement.ClassName, TextBoxElement.Part, state); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ ///// Renders a TextBox control. /// ///// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms { using System; using System.Drawing; using System.Diagnostics.CodeAnalysis; using System.Windows.Forms.Internal; using System.Windows.Forms.VisualStyles; using Microsoft.Win32; ////// /// public sealed class TextBoxRenderer { //Make this per-thread, so that different threads can safely use these methods. [ThreadStatic] private static VisualStyleRenderer visualStyleRenderer = null; private static readonly VisualStyleElement TextBoxElement = VisualStyleElement.TextBox.TextEdit.Normal; //cannot instantiate private TextBoxRenderer() { } ////// This is a rendering class for the TextBox control. /// ////// /// public static bool IsSupported { get { return VisualStyleRenderer.IsSupported; // no downlevel support } } private static void DrawBackground(Graphics g, Rectangle bounds, TextBoxState state) { visualStyleRenderer.DrawBackground(g, bounds); if (state != TextBoxState.Disabled) { Color windowColor = visualStyleRenderer.GetColor(ColorProperty.FillColor); if (windowColor != SystemColors.Window) { Rectangle fillRect = visualStyleRenderer.GetBackgroundContentRectangle(g, bounds); //then we need to re-fill the background. g.FillRectangle(new SolidBrush(SystemColors.Window), fillRect); } } } ////// Returns true if this class is supported for the current OS and user/application settings, /// otherwise returns false. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static void DrawTextBox(Graphics g, Rectangle bounds, TextBoxState state) { InitializeRenderer((int)state); DrawBackground(g, bounds, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, TextBoxState state) { DrawTextBox(g, bounds, textBoxText, font, TextFormatFlags.TextBoxControl, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, Rectangle textBounds, TextBoxState state) { DrawTextBox(g, bounds, textBoxText, font, textBounds, TextFormatFlags.TextBoxControl, state); } ////// Renders a TextBox control. /// ////// /// public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, TextFormatFlags flags, TextBoxState state) { InitializeRenderer((int)state); Rectangle textBounds = visualStyleRenderer.GetBackgroundContentRectangle(g, bounds); textBounds.Inflate(-2, -2); DrawTextBox(g, bounds, textBoxText, font, textBounds, flags, state); } ////// Renders a TextBox control. /// ////// /// [ SuppressMessage("Microsoft.Design", "CA1011:ConsiderPassingBaseTypesAsParameters") // Using Graphics instead of IDeviceContext intentionally ] public static void DrawTextBox(Graphics g, Rectangle bounds, string textBoxText, Font font, Rectangle textBounds, TextFormatFlags flags, TextBoxState state) { InitializeRenderer((int)state); DrawBackground(g, bounds, state); Color textColor = visualStyleRenderer.GetColor(ColorProperty.TextColor); TextRenderer.DrawText(g, textBoxText, font, textBounds, textColor, flags); } private static void InitializeRenderer(int state) { if (visualStyleRenderer == null) { visualStyleRenderer = new VisualStyleRenderer(TextBoxElement.ClassName, TextBoxElement.Part, state); } else { visualStyleRenderer.SetParameters(TextBoxElement.ClassName, TextBoxElement.Part, state); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007./// Renders a TextBox control. /// ///
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