mirror of https://github.com/dahall/Vanara.git
Replaced DrawWrapper with DrawViaDIB method
parent
886539dba7
commit
0804effa03
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@ -12,8 +12,8 @@ using static Vanara.PInvoke.UxTheme;
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namespace Vanara.Extensions
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{
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/// <summary>
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/// Extension methods for <see cref="VisualStyleRenderer"/> for glass effects and extended method functionality. Also provides GetFont2 and GetMargins2
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/// methods that corrects base library's non-functioning methods.
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/// Extension methods for <see cref="VisualStyleRenderer"/> for glass effects and extended method functionality. Also provides GetFont2
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/// and GetMargins2 methods that corrects base library's non-functioning methods.
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/// </summary>
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public static partial class VisualStylesRendererExtension
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{
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@ -22,7 +22,8 @@ namespace Vanara.Extensions
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private delegate void DrawWrapperMethod(HDC hdc);
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/// <summary>
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/// Draws the background image of the current visual style element within the specified bounding rectangle and optionally clipped to the specified clipping rectangle.
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/// Draws the background image of the current visual style element within the specified bounding rectangle and optionally clipped to
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/// the specified clipping rectangle.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the background image.</param>
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@ -51,7 +52,8 @@ namespace Vanara.Extensions
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}
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/// <summary>
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/// Draws the background image of the current visual style element onto a glass background within the specified bounding rectangle and optionally clipped to the specified clipping rectangle.
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/// Draws the background image of the current visual style element onto a glass background within the specified bounding rectangle
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/// and optionally clipped to the specified clipping rectangle.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the background image.</param>
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@ -61,8 +63,7 @@ namespace Vanara.Extensions
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public static void DrawGlassBackground(this VisualStyleRenderer rnd, IDeviceContext dc, Rectangle bounds, Rectangle? clipRectangle = null, bool rightToLeft = false)
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{
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var ht = new SafeHTHEME(rnd.Handle, false);
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DrawWrapper(dc, bounds,
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memoryHdc =>
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dc.DrawViaDIB(bounds, (memoryHdc, b) =>
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{
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var rBounds = new RECT(bounds);
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//var opts = new DrawThemeBackgroundOptions(clipRectangle);
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@ -78,9 +79,7 @@ namespace Vanara.Extensions
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);
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}
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/// <summary>
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/// Draws the image from the specified <paramref name="imageList"/> within the specified bounds on a glass background.
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/// </summary>
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/// <summary>Draws the image from the specified <paramref name="imageList"/> within the specified bounds on a glass background.</summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="g">The <see cref="Graphics"/> used to draw the image.</param>
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/// <param name="bounds">A <see cref="Rectangle"/> in which the image is drawn.</param>
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@ -89,28 +88,23 @@ namespace Vanara.Extensions
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public static void DrawGlassImage(this VisualStyleRenderer rnd, IDeviceContext g, Rectangle bounds, ImageList imageList, int imageIndex)
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{
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var ht = new SafeHTHEME(rnd.Handle, false);
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DrawWrapper(g, bounds,
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memoryHdc =>
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{
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DrawThemeIcon(ht, memoryHdc, rnd.Part, rnd.State, bounds, imageList.Handle, imageIndex);
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}
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);
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g.DrawViaDIB(bounds, (memoryHdc, b) =>
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DrawThemeIcon(ht, memoryHdc, rnd.Part, rnd.State, bounds, imageList.Handle, imageIndex));
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}
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/// <summary>
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/// Draws the specified image within the specified bounds on a glass background.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer" /> instance.</param>
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/// <param name="g">The <see cref="Graphics" /> used to draw the image.</param>
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/// <param name="bounds">A <see cref="Rectangle" /> in which the image is drawn.</param>
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/// <param name="image">An <see cref="ImageList" /> that contains the <see cref="Image" /> to draw.</param>
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/// <param name="disabled">if set to <c>true</c> draws the image in a disabled state using the <see cref="ControlPaint.DrawImageDisabled"/> method.</param>
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/// <summary>Draws the specified image within the specified bounds on a glass background.</summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="g">The <see cref="Graphics"/> used to draw the image.</param>
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/// <param name="bounds">A <see cref="Rectangle"/> in which the image is drawn.</param>
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/// <param name="image">An <see cref="ImageList"/> that contains the <see cref="Image"/> to draw.</param>
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/// <param name="disabled">
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/// if set to <c>true</c> draws the image in a disabled state using the <see cref="ControlPaint.DrawImageDisabled"/> method.
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/// </param>
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public static void DrawGlassImage(this VisualStyleRenderer rnd, IDeviceContext g, Rectangle bounds, Image image, bool disabled = false)
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{
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DrawWrapper(g, bounds,
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memoryHdc =>
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g.DrawViaDIB(bounds, (memoryHdc, b) =>
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{
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using (var mg = Graphics.FromHdc((IntPtr)memoryHdc))
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using (var mg = Graphics.FromHdc(memoryHdc.DangerousGetHandle()))
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{
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if (disabled)
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ControlPaint.DrawImageDisabled(mg, image, bounds.X, bounds.Y, Color.Transparent);
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@ -124,25 +118,24 @@ namespace Vanara.Extensions
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/// <summary>
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/// Draws glowing text in the specified bounding rectangle with the option of overriding text color and applying other text formatting.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer" /> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext" /> used to draw the text.</param>
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/// <param name="bounds">A <see cref="Rectangle" /> in which the text is drawn.</param>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the text.</param>
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/// <param name="bounds">A <see cref="Rectangle"/> in which the text is drawn.</param>
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/// <param name="text">The text to draw.</param>
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/// <param name="font">Optional font override.</param>
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/// <param name="color">Optionally, the color to draw text in overriding the default color for the theme.</param>
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/// <param name="flags">A bitwise combination of the <see cref="TextFormatFlags" /> values.</param>
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/// <param name="flags">A bitwise combination of the <see cref="TextFormatFlags"/> values.</param>
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/// <param name="glowSize">The size of the glow.</param>
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public static void DrawGlowingText(this VisualStyleRenderer rnd, IDeviceContext dc, Rectangle bounds, string text, Font font, Color? color, TextFormatFlags flags = TextFormatFlags.Default, int glowSize = 10)
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{
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var ht = new SafeHTHEME(rnd.Handle, false);
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DrawWrapper(dc, bounds,
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memoryHdc =>
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dc.DrawViaDIB(bounds, (memoryHdc, b) =>
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{
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// Create and select font
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using (new GdiObjectContext(memoryHdc, new SafeHFONT(font?.ToHfont() ?? IntPtr.Zero)))
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{
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// Draw glowing text
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var dttOpts = new DTTOPTS(null) {GlowSize = glowSize, AntiAliasedAlpha = true};
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var dttOpts = new DTTOPTS(null) { GlowSize = glowSize, AntiAliasedAlpha = true };
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if (color != null) dttOpts.TextColor = color.Value;
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var textBounds = new RECT(4, 0, bounds.Right - bounds.Left, bounds.Bottom - bounds.Top);
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DrawThemeTextEx(ht, memoryHdc, rnd.Part, rnd.State, text, text.Length, FromTFF(flags), ref textBounds, dttOpts);
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@ -151,12 +144,10 @@ namespace Vanara.Extensions
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);
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}
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/// <summary>
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/// Draws text in the specified bounding rectangle with the option of applying other text formatting.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer" /> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext" /> used to draw the text.</param>
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/// <param name="bounds">A <see cref="Rectangle" /> in which the text is drawn.</param>
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/// <summary>Draws text in the specified bounding rectangle with the option of applying other text formatting.</summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the text.</param>
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/// <param name="bounds">A <see cref="Rectangle"/> in which the text is drawn.</param>
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/// <param name="text">The text to draw.</param>
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/// <param name="flags">A bitwise combination of the <see cref="TextFormatFlags"/> values.</param>
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/// <param name="options">The <see cref="DTTOPTS"/> .</param>
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@ -169,10 +160,9 @@ namespace Vanara.Extensions
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bounds = rc;
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}
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private static DrawTextFlags FromTFF(TextFormatFlags tff) => (DrawTextFlags)(int)tff;
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/// <summary>
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/// Gets the background image of the current visual style element within the specified background color. If <paramref name="states"/> is set, the resulting image will contain each of the state images side by side.
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/// Gets the background image of the current visual style element within the specified background color. If <paramref name="states"/>
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/// is set, the resulting image will contain each of the state images side by side.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="clr">The background color. This color cannot have an alpha channel.</param>
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@ -234,45 +224,26 @@ namespace Vanara.Extensions
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}
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}
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private static Size MaxSize(Size sz1, Size sz2) => new Size(Math.Max(sz1.Width, sz2.Width), Math.Max(sz1.Height, sz2.Height));
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/// <summary>
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/// Returns the value of the specified font property for the current visual style element.
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/// </summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer" /> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext" /> used to draw the text.</param>
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/// <summary>Returns the value of the specified font property for the current visual style element.</summary>
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/// <param name="rnd">The <see cref="VisualStyleRenderer"/> instance.</param>
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/// <param name="dc">The <see cref="IDeviceContext"/> used to draw the text.</param>
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/// <param name="defaultValue">A value to return if the system has no font defined for this <see cref="VisualStyleRenderer"/> instance.</param>
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/// <returns>A <see cref="Font"/> that contains the value of the property specified by the prop parameter for the current visual style element.</returns>
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/// <returns>
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/// A <see cref="Font"/> that contains the value of the property specified by the prop parameter for the current visual style element.
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/// </returns>
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public static Font GetFont2(this VisualStyleRenderer rnd, IDeviceContext dc = null, Font defaultValue = null)
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{
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using (var hdc = new SafeHDC(dc))
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{
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return 0 != GetThemeFont(new SafeHTHEME(rnd.Handle, false), hdc, rnd.Part, rnd.State, 210, out LOGFONT f)
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return 0 != GetThemeFont(new SafeHTHEME(rnd.Handle, false), hdc, rnd.Part, rnd.State, 210, out var f)
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? defaultValue : Font.FromLogFont(f);
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}
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}
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private static void DrawWrapper(IDeviceContext dc, Rectangle bounds, DrawWrapperMethod func)
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{
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using (var sdc = new SafeHDC(dc))
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{
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// Create a memory DC so we can work off screen
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using (var memoryHdc = sdc.GetCompatibleDCHandle())
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{
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// Create a device-independent bitmap and select it into our DC
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var info = new BITMAPINFO(bounds.Width, -bounds.Height);
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using (memoryHdc.SelectObject(CreateDIBSection(sdc, ref info, 0, out var pBits, IntPtr.Zero, 0)))
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{
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// Call method
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func(memoryHdc);
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// Copy to foreground
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BitBlt(sdc, bounds.Left, bounds.Top, bounds.Width, bounds.Height, memoryHdc, 0, 0, RasterOperationMode.SRCCOPY);
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}
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}
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}
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}
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private static DrawTextFlags FromTFF(TextFormatFlags tff) => (DrawTextFlags)(int)tff;
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private static long GetHashCode(this VisualStyleRenderer r) => (long)r.Class.GetHashCode() << 32 | ((uint)r.Part << 16 | (ushort)r.State);
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private static Size MaxSize(Size sz1, Size sz2) => new Size(Math.Max(sz1.Width, sz2.Width), Math.Max(sz1.Height, sz2.Height));
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}
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}
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