/// <summary> /// Draw the text. /// </summary> /// <param name="hdc"></param> /// <param name="color"></param> /// <param name="rect"></param> /// <param name="topOffset"></param> /// <param name="orientation"></param> /// <param name="fontDescription"></param> /// <param name="text"></param> /// <param name="contentAlignment"></param> /// <param name="flags"></param> public static void DrawText(IntPtr hdc, Color color, Rectangle rect, int topOffset, int orientation, FontDescription fontDescription, String text, ContentAlignment contentAlignment, int flags, bool rightToLeft) { NativeWindowCommon.SetBkMode(hdc, NativeWindowCommon.TRANSPARENT); NativeWindowCommon.SetTextColor(hdc, ColorTranslator.ToWin32(color)); #if !PocketPC // QCR #439182 & 430913: the font is used for a control before even being initialized. // TODO: We need a better fix that avoids calling get_Font() for logical controls that are not initialized properly. if (fontDescription == null) { fontDescription = new FontDescription(Control.DefaultFont); } #endif NativeWindowCommon.RECT rc = new NativeWindowCommon.RECT(); rc.left = rect.Left; rc.right = rect.Right; rc.top = rect.Top + topOffset; rc.bottom = rect.Bottom; #if !PocketPC if (orientation != 0) { PrintRotatedText(hdc, fontDescription, orientation, text, rect, contentAlignment, rc, rightToLeft); } else #endif { IntPtr hFont = fontDescription.FontHandle; NativeWindowCommon.SelectObject(hdc, hFont); NativeWindowCommon.DrawText(hdc, text, text.Length, ref rc, flags); } }
/// <summary> /// Draw the text supporting clipping according to ClipRegion. /// </summary> /// <param name="g"></param> /// <param name="color"></param> /// <param name="rect"></param> /// <param name="topOffset"></param> /// <param name="orientation"></param> /// <param name="fontDescription"></param> /// <param name="text"></param> /// <param name="contentAlignment"></param> /// <param name="flags"></param> public static void ClipSupportingDrawText(Graphics g, Color color, Rectangle rect, int topOffset, int orientation, FontDescription fontDescription, String text, ContentAlignment contentAlignment, int flags, bool rightToLeft) { IntPtr region = IntPtr.Zero; IntPtr currentclippedRegion = g.Clip.GetHrgn(g); bool IsRegionInfinite = g.Clip.IsInfinite(g); IntPtr hdc = g.GetHdc(); NativeWindowCommon.SetBkMode(hdc, NativeWindowCommon.TRANSPARENT); NativeWindowCommon.SetTextColor(hdc, ColorTranslator.ToWin32(color)); // Text rectangle as clip Region IntPtr clipRegion = NativeWindowCommon.CreateRectRgn(rect.Left, rect.Top, rect.Right, rect.Bottom); // If Text starts above control, it needs to clip if (topOffset < 0) { // if current graphics is already clipped, then we need to merge with current text rectangle clip if (!IsRegionInfinite) { NativeWindowCommon.CombineRgn(currentclippedRegion, currentclippedRegion, clipRegion, NativeWindowCommon.RGN_AND); } } if (IsRegionInfinite) { // If there is no clip region on graphics, set text rectangle as clip region region = clipRegion; } else if (currentclippedRegion != IntPtr.Zero) { // use intersected region as clip region region = currentclippedRegion; } // Select resultant clipped region on DC if (region != IntPtr.Zero) { NativeWindowCommon.SelectClipRgn(hdc, region); } if (clipRegion != IntPtr.Zero) { NativeWindowCommon.DeleteObject(clipRegion); } // Draw text DrawText(hdc, color, rect, topOffset, orientation, fontDescription, text, contentAlignment, flags, rightToLeft); // release objects g.ReleaseHdc(hdc); if (currentclippedRegion != IntPtr.Zero) { g.Clip.ReleaseHrgn(currentclippedRegion); } }
/// <summary> /// Draw Header section filter /// </summary> /// <param name="hdc"></param> /// <param name="rct"></param> /// <param name="g"></param> public void DrawFilter(IntPtr hdc, NativeWindowCommon.RECT rct) { //Filter line drawing int x = rct.right - FILTER_WIDTH; int bottomY = 0; Header.HeaderRenderer.DrawLine(hdc, new Point(x, bottomY), new Point(x, Header.FilterHeight)); //Filter highlight drawing NativeWindowCommon.RECT rectHighlight = new NativeWindowCommon.RECT() { bottom = Header.FilterHeight, top = 0, left = rct.right - FILTER_WIDTH + 1, right = rct.right + 1 }; if ((FilterColor != Color.Empty) && !Header.OnSectionResize) { if (Header.TitleColor != Color.Empty) { Header.HighlightBrush = NativeWindowCommon.CreateSolidBrush(ColorTranslator.ToWin32(FilterColor)); } else { Header.HighlightBrush = NativeWindowCommon.CreateSolidBrush(ColorTranslator.ToWin32(Color.FromArgb(255, 149, 202, 255))); } NativeWindowCommon.FillRect(hdc, ref rectHighlight, Header.HighlightBrush); NativeWindowCommon.DeleteObject(Header.HighlightBrush); } int filterWidthIcon = FILTER_WIDTH / 3; //Filter arrow drawing NativeWindowCommon.POINT[] points = new NativeWindowCommon.POINT[3]; //right points[0].x = rct.right - filterWidthIcon; points[0].y = rct.top + (rct.bottom - rct.top) / 2 - 2; // center point points[1].x = rct.right - FILTER_WIDTH / 2; points[1].y = points[0].y + filterWidthIcon / 2; // left point points[2].x = points[0].x - filterWidthIcon; points[2].y = points[0].y; NativeWindowCommon.SelectObject(hdc, Header.FilterBrush); NativeWindowCommon.SelectObject(hdc, Header.FilterPen); NativeWindowCommon.Polygon(hdc, points, 3); }
/// <summary> /// draw header section title /// </summary> /// <param name="hdc"></param> /// <param name="rc"></param> internal void DrawTitle(IntPtr hdc, NativeWindowCommon.RECT rc, int index, bool supportsMultilineText, bool addEndEllipsesFlag, bool rightToLeftLayout) { Header.HeaderRenderer.GetTitleTextRect(index, ref rc); using (Graphics gr = Graphics.FromHdc(hdc)) { //draw sort icon if (SortMark != HeaderSectionSortMarks.Non && !HasFilter) { int iconWindth = SortIconWidth(); DrawSortMark(hdc, rc, gr); rc.right -= iconWindth + Header.SORT_ICON_LEFT_RIGHT_MARGIN; } if (HasFilter) { rc.right -= HeaderSection.FILTER_WIDTH + Header.SORT_ICON_LEFT_RIGHT_MARGIN; } //draw ... in the end of text if width is too short int width = rc.right - rc.left; int format = NativeWindowCommon.DT_EDITCONTROL | NativeWindowCommon.DT_EXTERNALLEADING; if (supportsMultilineText) { format |= NativeWindowCommon.DT_WORDBREAK; } StringBuilder stringBuilder = new StringBuilder(Text); if (addEndEllipsesFlag) { //for windows CE && orientated fonts DT_END_ELLIPSIS style is not supported //http://support.microsoft.com/kb/249678 format |= NativeWindowCommon.DT_END_ELLIPSIS; } if (Environment.OSVersion.Platform == PlatformID.WinCE) { if (Text.IndexOf("\n") != -1) { SizeF size = gr.MeasureString(text, Font); int cur, len = cur = text.Length; while (size.Width > width && cur > 1) { cur = --len; stringBuilder.Length = len; while (cur > 1 && len - cur < 3) { stringBuilder[--cur] = '.'; } size = gr.MeasureString(stringBuilder.ToString(), Font); } } } NativeWindowCommon.SetBkMode(hdc, NativeWindowCommon.TRANSPARENT); NativeWindowCommon.SetTextColor(hdc, ColorTranslator.ToWin32(Color)); #if !PocketPC if (FontOrientation != 0) { Rectangle rectangle = new Rectangle(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top); ControlRenderer.PrintRotatedText(hdc, FontDescription, FontOrientation, stringBuilder.ToString(), rectangle, ContentAlignment, rc, rightToLeftLayout); } else #endif { //text flags are exactly the same as DrawText DT_*** flags format |= (int)Utils.ContentAlignment2TextFlags(ContentAlignment); if (isSingleLine()) { format |= NativeWindowCommon.DT_SINGLELINE; } IntPtr hFont = FontDescription.FontHandle; NativeWindowCommon.SelectObject(hdc, hFont); NativeWindowCommon.DrawText(hdc, stringBuilder.ToString(), stringBuilder.Length, ref rc, format); } #if !PocketPC //Set the rectangle back if (HasFilter) { rc.right += HeaderSection.FILTER_WIDTH + Header.SORT_ICON_LEFT_RIGHT_MARGIN; DrawFilter(hdc, rc); } #endif } }