mirror of
https://github.com/xcp-ng/xenadmin.git
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361 lines
14 KiB
C#
361 lines
14 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Runtime.InteropServices;
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using System.Drawing.Text;
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using System.Windows.Forms;
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namespace XenAdmin.Core
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{
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class Drawing
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{
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private static readonly ColorMatrix GreyScaleColorMatrix = new ColorMatrix(new float[][]
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{
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new float[] {0.2125f, 0.2125f, 0.2125f, 0, 0},
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new float[] {0.2577f, 0.2577f, 0.2577f, 0, 0},
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new float[] {0.0361f, 0.0361f, 0.0361f, 0, 0},
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new float[] {0, 0, 0, 1, 0},
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new float[] {0.38f, 0.38f, 0.38f, 0, 1}
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});
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private static readonly ColorMatrix AlphaColorMatrix = new ColorMatrix(new float[][]
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{
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new float[] {1, 0, 0, 0, 0},
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new float[] {0, 1, 0, 0, 0},
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new float[] {0, 0, 1, 0, 0},
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new float[] {0, 0, 0, .75f, 0},
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new float[] {0, 0, 0, 0, 1}
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});
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public static readonly ImageAttributes GreyScaleAttributes = new ImageAttributes();
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public static readonly ImageAttributes AlphaAttributes = new ImageAttributes();
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static Drawing()
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{
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GreyScaleAttributes.SetColorMatrix(GreyScaleColorMatrix);
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AlphaAttributes.SetColorMatrix(AlphaColorMatrix);
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}
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/// <summary>
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/// Kerpow!
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/// </summary>
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public static void QuickDraw(Graphics gTarget, Bitmap buffer)
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{
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QuickDraw(gTarget, buffer, new Point(0, 0), new Rectangle(0, 0, buffer.Width, buffer.Height));
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}
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/// <summary>
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/// Kerpow!
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/// </summary>
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public static void QuickDraw(Graphics gTarget, Bitmap buffer, Point source, Rectangle dest)
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{
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IntPtr pTarget = gTarget.GetHdc();
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IntPtr pSource = CreateCompatibleDC(pTarget);
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IntPtr pNew = buffer.GetHbitmap();
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SelectObject(pSource, pNew);
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BitBlt(pTarget, dest.X, dest.Y, dest.Width, dest.Height, pSource, source.X, source.Y, TernaryRasterOperations.SRCCOPY);
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DeleteObject(pNew);
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DeleteDC(pSource);
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gTarget.ReleaseHdc(pTarget);
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}
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[DllImport("gdi32.dll", SetLastError = true)]
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public static extern bool BitBlt(IntPtr hObject, int nXDest, int nYDest, int nWidth,
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int nHeight, IntPtr hObjSource, int nXSrc, int nYSrc, TernaryRasterOperations dwRop);
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[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
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public static extern IntPtr CreateCompatibleDC(IntPtr hdc);
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[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
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public static extern bool DeleteDC(IntPtr hdc);
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[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
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public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);
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[DllImport("gdi32.dll", ExactSpelling = true, SetLastError = true)]
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public static extern bool DeleteObject(IntPtr hObject);
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public enum TernaryRasterOperations : uint
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{
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SRCCOPY = 0x00CC0020,
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SRCPAINT = 0x00EE0086,
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SRCAND = 0x008800C6,
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SRCINVERT = 0x00660046,
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SRCERASE = 0x00440328,
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NOTSRCCOPY = 0x00330008,
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NOTSRCERASE = 0x001100A6,
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MERGECOPY = 0x00C000CA,
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MERGEPAINT = 0x00BB0226,
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PATCOPY = 0x00F00021,
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PATPAINT = 0x00FB0A09,
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PATINVERT = 0x005A0049,
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DSTINVERT = 0x00550009,
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BLACKNESS = 0x00000042,
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WHITENESS = 0x00FF0062
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}
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public static TextRenderingHint TextRenderingHint
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{
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get
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{
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return TextRenderingHint.SystemDefault;
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}
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}
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//
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// CA-23037: & character in name, custom field (anything on general panel)
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// renders as a keyboard shortcut
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//
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Point point, Color color)
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{
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TextRenderer.DrawText(dc, text, font, point, color, TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Point point, Color color, Color backColor)
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{
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DrawText(dc, text, font, point, color, backColor, TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Point point, Color color, Color backColor, TextFormatFlags flags)
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{
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TextRenderer.DrawText(dc, text, font, point, color, backColor, flags | TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Rectangle bounds, Color color)
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{
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DrawText(dc, text, font, bounds, color, TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Rectangle bounds, Color color, TextFormatFlags textFormatFlags)
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{
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TextRenderer.DrawText(dc, text, font, bounds, color, textFormatFlags | TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Rectangle bounds, Color foreColor, Color backColor)
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{
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DrawText(dc, text, font, bounds, foreColor, backColor, TextFormatFlags.NoPrefix);
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}
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public static void DrawText(IDeviceContext dc, String text, Font font,
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Rectangle bounds, Color foreColor, Color backColor, TextFormatFlags flags)
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{
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TextRenderer.DrawText(dc, text, font, bounds, foreColor, backColor, flags | TextFormatFlags.NoPrefix);
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}
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public static Size MeasureText(String text, Font font)
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{
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return MeasureText(text, font, new Size(Int32.MaxValue, Int32.MaxValue), TextFormatFlags.NoPrefix);
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}
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public static Size MeasureText(String text, Font font, Size proposedSize, TextFormatFlags flags)
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{
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return TextRenderer.MeasureText(text, font, proposedSize, flags | TextFormatFlags.NoPrefix);
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}
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public static Size MeasureText(IDeviceContext dc, String text, Font font)
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{
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return MeasureText(dc, text, font, new Size(Int32.MaxValue, Int32.MaxValue), TextFormatFlags.NoPrefix);
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}
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public static Size MeasureText(IDeviceContext dc, String text, Font font, TextFormatFlags flags)
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{
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return MeasureText(dc, text, font, new Size(Int32.MaxValue, Int32.MaxValue), flags);
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}
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public static Size MeasureText(IDeviceContext dc, String text, Font font, Size proposedSize, TextFormatFlags flags)
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{
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return TextRenderer.MeasureText(dc, text, font, proposedSize, flags | TextFormatFlags.NoPrefix);
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}
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/// <summary>
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/// Draw me a progress bar. Copes with visual styles being on or off
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/// </summary>
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/// <param name="g">Graphics to draw to</param>
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/// <param name="r">where to draw the progress bar</param>
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/// <param name="progress">how much progress (0.0-1.0)</param>
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///
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public static void DrawProgressBar(Graphics g, Rectangle r, double progress)
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{
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if (Application.RenderWithVisualStyles)
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{
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ProgressBarRenderer.DrawHorizontalBar(g, r);
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Rectangle s = new Rectangle(
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r.X + 4,
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r.Y + 3,
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(int)((r.Width - 8) * progress),
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r.Height - 5);
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ProgressBarRenderer.DrawHorizontalChunks(g, s);
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}
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else
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{
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g.FillRectangle(SystemBrushes.ButtonShadow, r);
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Rectangle s = new Rectangle(
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r.X + 1,
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r.Y + 1,
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r.Width - 1,
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r.Height - 1);
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g.FillRectangle(SystemBrushes.ButtonHighlight, s);
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Rectangle t = new Rectangle(
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r.X + 1,
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r.Y + 1,
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r.Width - 2,
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r.Height - 2);
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g.FillRectangle(SystemBrushes.ButtonFace, t);
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int barwidth = (int)(progress * (r.Width - 4));
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int chunkwidth = 7;
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int chunkgap = 2;
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int progleft = 0;
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while (progleft + chunkwidth + chunkgap < barwidth)
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{
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Rectangle u = new Rectangle(
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r.X + 2 + progleft,
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r.Y + 2,
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chunkwidth,
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13);
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g.FillRectangle(SystemBrushes.ActiveCaption, u);
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progleft += chunkwidth + chunkgap;
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}
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Rectangle v = new Rectangle(
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r.X + 2 + progleft,
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r.Y + 2,
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chunkwidth - progleft,
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13);
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g.FillRectangle(SystemBrushes.ActiveCaption, v);
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}
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}
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public enum SimpleProgressBarColor { Green, Red, Blue };
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/// <summary>
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/// Draws a simple progress bar (just the chunks with a grey 1 pixel border).
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/// </summary>
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/// <param name="g">The device context used for drawing.</param>
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/// <param name="r">The rectangle that specifies where it should be drawn.</param>
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/// <param name="progress">The value of the progress. Should be between 0.0 and 1.0.</param>
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/// <param name="color">The color of the progress bar.</param>
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public static void DrawSimpleProgressBar(Graphics g, Rectangle r, double progress, SimpleProgressBarColor color)
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{
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using (Bitmap bitmap = new Bitmap(r.Width, r.Height))
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{
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using (Graphics gg = Graphics.FromImage(bitmap))
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{
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//fill background in white
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gg.FillRectangle(Brushes.White, new Rectangle(0, 0, r.Width, r.Height));
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Rectangle chunks = new Rectangle(0, 0, (int)(r.Width * progress), r.Height);
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if (Application.RenderWithVisualStyles)
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{
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ProgressBarRenderer.DrawHorizontalChunks(gg, chunks);
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}
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else
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{
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var brush = Brushes.LightGreen;
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if (color == SimpleProgressBarColor.Red)
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{
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brush = Brushes.Red;
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}
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else if (color == SimpleProgressBarColor.Blue)
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{
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brush = Brushes.Blue;
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}
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gg.FillRectangle(brush, chunks);
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}
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}
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if (Application.RenderWithVisualStyles && color != SimpleProgressBarColor.Green)
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{
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for (int i = 0; i < bitmap.Width * progress; i++)
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{
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for (int j = 0; j < bitmap.Height; j++)
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{
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Color c = bitmap.GetPixel(i, j);
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if (color == SimpleProgressBarColor.Blue)
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{
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bitmap.SetPixel(i, j, Color.FromArgb(c.R, c.B, c.G));
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}
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else
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{
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//red
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bitmap.SetPixel(i, j, Color.FromArgb(c.G, c.R, c.B));
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}
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}
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}
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}
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// draw progress bar
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g.DrawImage(bitmap, r);
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// draw rectangle around progress bar.
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g.DrawRectangle(SystemPens.ControlDark, r);
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}
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}
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/// <summary>
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/// Converts input image to grey scale using Drawing.GreyScaleAttributes
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/// </summary>
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/// <param name="source">Image to convert</param>
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/// <returns>Image converted to grey scale</returns>
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public static Image ConvertToGreyScale(Image source)
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{
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var bitmap = new Bitmap(source.Width, source.Height);
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using (Graphics graphics = Graphics.FromImage(bitmap))
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{
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var rectangle = new Rectangle(0, 0, source.Width, source.Height);
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graphics.DrawImage(source, rectangle, 0, 0, source.Width, source.Height, GraphicsUnit.Pixel,
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Drawing.GreyScaleAttributes);
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return bitmap;
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}
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}
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}
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}
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