Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / PtsHost / SectionVisual.cs / 1305600 / SectionVisual.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: SectionVisual.cs // // Description: Visual representing a section. // // History: // 05/20/2003 : [....] - created. // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Windows; using System.Windows.Media; using System.Windows.Threading; using MS.Internal.Text; using MS.Internal.PtsHost.UnsafeNativeMethods; namespace MS.Internal.PtsHost { // --------------------------------------------------------------------- // Visual representing a section. // --------------------------------------------------------------------- internal class SectionVisual : DrawingVisual { // ------------------------------------------------------------------ // Constructor. // ----------------------------------------------------------------- internal SectionVisual() { } // ------------------------------------------------------------------ // Set information about column rules that are necessary for rendering // process. Draw column rules if necessary. // // arrayColumnDesc - column description including rectangle coordinates, etc // columnVStart - vertical start coordinate of column rule // columnHeight - height of column rule // columnProperties - column properties. // ------------------------------------------------------------------ internal void DrawColumnRules(ref PTS.FSTRACKDESCRIPTION[] arrayColumnDesc, double columnVStart, double columnHeight, ColumnPropertiesGroup columnProperties) { // Compute column rules data first. Point[] rulePositions = null; double ruleWidth = columnProperties.ColumnRuleWidth; if (arrayColumnDesc.Length > 1) { if (ruleWidth > 0) { int gapWidth = (arrayColumnDesc[1].fsrc.u - (arrayColumnDesc[0].fsrc.u + arrayColumnDesc[0].fsrc.du)) / 2; rulePositions = new Point[(arrayColumnDesc.Length - 1)*2]; for (int index = 1; index < arrayColumnDesc.Length; index++) { double u = TextDpi.FromTextDpi(arrayColumnDesc[index].fsrc.u - gapWidth); double v = columnVStart; double dv = columnHeight; rulePositions[(index-1)*2].X = u; rulePositions[(index-1)*2].Y = v; rulePositions[(index-1)*2+1].X = u; rulePositions[(index-1)*2+1].Y = v + dv; } } } // Check if update of the visual render data is needed. bool needsUpdate = _ruleWidth != ruleWidth; if (!needsUpdate && _rulePositions != rulePositions) { int prevSize = _rulePositions == null ? 0 : _rulePositions.Length; int newSize = rulePositions == null ? 0 : rulePositions.Length; if (prevSize == newSize) { for (int index = 0; index < rulePositions.Length; index++) { if (!DoubleUtil.AreClose(rulePositions[index].X, _rulePositions[index].X) || !DoubleUtil.AreClose(rulePositions[index].Y, _rulePositions[index].Y)) { needsUpdate = true; break; } } } else { needsUpdate = true; } } // Draw column rules if necessary if (needsUpdate) { _ruleWidth = ruleWidth; _rulePositions = rulePositions; // Open DrawingContext and draw background. // If background is not set, Open will clear the render data, but it // will preserve visual children. using (DrawingContext dc = RenderOpen()) { if (rulePositions != null) { // We do not want to cause the user's Brush to become frozen when we // freeze pen below, therefore we make our own copy of the Brush if // it is not already frozen. Brush columnRuleBrush = (Brush)FreezableOperations.GetAsFrozenIfPossible(columnProperties.ColumnRuleBrush); Pen pen = new Pen(columnRuleBrush, ruleWidth); // Freeze the pen if possible. Doing this avoids the overhead of // maintaining changed handlers. if (pen.CanFreeze) { pen.Freeze(); } for (int index = 0; index < rulePositions.Length; index += 2) { dc.DrawLine(pen, rulePositions[index], rulePositions[index + 1]); } } } } } // ----------------------------------------------------------------- // Column rules positions // ------------------------------------------------------------------ private Point[] _rulePositions; // ----------------------------------------------------------------- // Pen for column rule. // ----------------------------------------------------------------- private double _ruleWidth; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: SectionVisual.cs // // Description: Visual representing a section. // // History: // 05/20/2003 : [....] - created. // //--------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Windows; using System.Windows.Media; using System.Windows.Threading; using MS.Internal.Text; using MS.Internal.PtsHost.UnsafeNativeMethods; namespace MS.Internal.PtsHost { // --------------------------------------------------------------------- // Visual representing a section. // --------------------------------------------------------------------- internal class SectionVisual : DrawingVisual { // ------------------------------------------------------------------ // Constructor. // ----------------------------------------------------------------- internal SectionVisual() { } // ------------------------------------------------------------------ // Set information about column rules that are necessary for rendering // process. Draw column rules if necessary. // // arrayColumnDesc - column description including rectangle coordinates, etc // columnVStart - vertical start coordinate of column rule // columnHeight - height of column rule // columnProperties - column properties. // ------------------------------------------------------------------ internal void DrawColumnRules(ref PTS.FSTRACKDESCRIPTION[] arrayColumnDesc, double columnVStart, double columnHeight, ColumnPropertiesGroup columnProperties) { // Compute column rules data first. Point[] rulePositions = null; double ruleWidth = columnProperties.ColumnRuleWidth; if (arrayColumnDesc.Length > 1) { if (ruleWidth > 0) { int gapWidth = (arrayColumnDesc[1].fsrc.u - (arrayColumnDesc[0].fsrc.u + arrayColumnDesc[0].fsrc.du)) / 2; rulePositions = new Point[(arrayColumnDesc.Length - 1)*2]; for (int index = 1; index < arrayColumnDesc.Length; index++) { double u = TextDpi.FromTextDpi(arrayColumnDesc[index].fsrc.u - gapWidth); double v = columnVStart; double dv = columnHeight; rulePositions[(index-1)*2].X = u; rulePositions[(index-1)*2].Y = v; rulePositions[(index-1)*2+1].X = u; rulePositions[(index-1)*2+1].Y = v + dv; } } } // Check if update of the visual render data is needed. bool needsUpdate = _ruleWidth != ruleWidth; if (!needsUpdate && _rulePositions != rulePositions) { int prevSize = _rulePositions == null ? 0 : _rulePositions.Length; int newSize = rulePositions == null ? 0 : rulePositions.Length; if (prevSize == newSize) { for (int index = 0; index < rulePositions.Length; index++) { if (!DoubleUtil.AreClose(rulePositions[index].X, _rulePositions[index].X) || !DoubleUtil.AreClose(rulePositions[index].Y, _rulePositions[index].Y)) { needsUpdate = true; break; } } } else { needsUpdate = true; } } // Draw column rules if necessary if (needsUpdate) { _ruleWidth = ruleWidth; _rulePositions = rulePositions; // Open DrawingContext and draw background. // If background is not set, Open will clear the render data, but it // will preserve visual children. using (DrawingContext dc = RenderOpen()) { if (rulePositions != null) { // We do not want to cause the user's Brush to become frozen when we // freeze pen below, therefore we make our own copy of the Brush if // it is not already frozen. Brush columnRuleBrush = (Brush)FreezableOperations.GetAsFrozenIfPossible(columnProperties.ColumnRuleBrush); Pen pen = new Pen(columnRuleBrush, ruleWidth); // Freeze the pen if possible. Doing this avoids the overhead of // maintaining changed handlers. if (pen.CanFreeze) { pen.Freeze(); } for (int index = 0; index < rulePositions.Length; index += 2) { dc.DrawLine(pen, rulePositions[index], rulePositions[index + 1]); } } } } } // ----------------------------------------------------------------- // Column rules positions // ------------------------------------------------------------------ private Point[] _rulePositions; // ----------------------------------------------------------------- // Pen for column rule. // ----------------------------------------------------------------- private double _ruleWidth; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- HelpProvider.cs
- SerializerProvider.cs
- ParserExtension.cs
- SQLBytesStorage.cs
- EncoderParameters.cs
- PrintDialog.cs
- _UriSyntax.cs
- HwndHost.cs
- InputChannelBinder.cs
- DetailsViewPagerRow.cs
- HealthMonitoringSectionHelper.cs
- MouseOverProperty.cs
- Point4D.cs
- UrlPath.cs
- UxThemeWrapper.cs
- LinearGradientBrush.cs
- Win32.cs
- Grant.cs
- EntitySqlException.cs
- WindowsRichEditRange.cs
- SiteMapProvider.cs
- SingleAnimation.cs
- ResourcePool.cs
- ProxyGenerator.cs
- Ray3DHitTestResult.cs
- RegionIterator.cs
- ExpressionBuilder.cs
- ProtocolInformationWriter.cs
- InputScopeAttribute.cs
- XmlUtil.cs
- Msec.cs
- CalendarDayButton.cs
- Facet.cs
- EditorPartCollection.cs
- AlgoModule.cs
- autovalidator.cs
- CreateUserErrorEventArgs.cs
- DataGrid.cs
- LocationSectionRecord.cs
- ColorConverter.cs
- DocumentPageViewAutomationPeer.cs
- securitycriticaldataformultiplegetandset.cs
- ConvertersCollection.cs
- SafeMILHandle.cs
- StrokeNode.cs
- NumberFunctions.cs
- UpdatePanelTriggerCollection.cs
- Int32EqualityComparer.cs
- TransformConverter.cs
- TypeDescriptionProvider.cs
- MethodRental.cs
- ReachSerializer.cs
- CodeTypeReferenceSerializer.cs
- BinaryFormatterWriter.cs
- ConnectionInterfaceCollection.cs
- KeyGesture.cs
- SrgsDocumentParser.cs
- WindowsListView.cs
- DBConcurrencyException.cs
- CompositeActivityTypeDescriptorProvider.cs
- DataSourceControlBuilder.cs
- UnionQueryOperator.cs
- ListViewDataItem.cs
- columnmapfactory.cs
- DataPointer.cs
- OdbcParameter.cs
- ListViewItemSelectionChangedEvent.cs
- EmptyCollection.cs
- InvokeHandlers.cs
- List.cs
- DelimitedListTraceListener.cs
- ResourceManager.cs
- HtmlForm.cs
- WorkerRequest.cs
- RelativeSource.cs
- DPCustomTypeDescriptor.cs
- PeerNeighborManager.cs
- MenuEventArgs.cs
- SchemaImporterExtension.cs
- SqlProfileProvider.cs
- ListContractAdapter.cs
- CharAnimationUsingKeyFrames.cs
- CommonXSendMessage.cs
- _ConnectOverlappedAsyncResult.cs
- CellTreeSimplifier.cs
- SafeRightsManagementSessionHandle.cs
- OleDbRowUpdatingEvent.cs
- DrawingCollection.cs
- JsonDataContract.cs
- Control.cs
- FileDialog.cs
- OleCmdHelper.cs
- XamlBuildTaskServices.cs
- TextInfo.cs
- ListManagerBindingsCollection.cs
- MobileCapabilities.cs
- Geometry3D.cs
- Window.cs
- Math.cs
- MethodCallTranslator.cs