96 lines
6.2 KiB
C#
96 lines
6.2 KiB
C#
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using System.Runtime.InteropServices;
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namespace SharpDX.DirectWrite
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{
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public partial class InlineObjectNative
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{
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/// <summary>
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/// The application implemented rendering callback (<see cref="TextRenderer.DrawInlineObject"/>) can use this to draw the inline object without needing to cast or query the object type. The text layout does not call this method directly.
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/// </summary>
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/// <param name="clientDrawingContext">The drawing context passed to <see cref="SharpDX.DirectWrite.TextLayout.Draw_"/>. This parameter may be NULL. </param>
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/// <param name="renderer">The same renderer passed to <see cref="SharpDX.DirectWrite.TextLayout.Draw_"/> as the object's containing parent. This is useful if the inline object is recursive such as a nested layout. </param>
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/// <param name="originX">The x-coordinate at the upper-left corner of the inline object. </param>
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/// <param name="originY">The y-coordinate at the upper-left corner of the inline object. </param>
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/// <param name="isSideways">A Boolean flag that indicates whether the object's baseline runs alongside the baseline axis of the line. </param>
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/// <param name="isRightToLeft">A Boolean flag that indicates whether the object is in a right-to-left context and should be drawn flipped. </param>
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/// <param name="clientDrawingEffect">The drawing effect set in <see cref="SharpDX.DirectWrite.TextLayout.SetDrawingEffect"/>. Usually this effect is a foreground brush that is used in glyph drawing. </param>
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/// <returns>If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. </returns>
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/// <unmanaged>HRESULT IDWriteInlineObject::Draw([None] void* clientDrawingContext,[None] IDWriteTextRenderer* renderer,[None] float originX,[None] float originY,[None] BOOL isSideways,[None] BOOL isRightToLeft,[None] IUnknown* clientDrawingEffect)</unmanaged>
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public void Draw(object clientDrawingContext, TextRenderer renderer, float originX, float originY, bool isSideways, bool isRightToLeft, ComObject clientDrawingEffect)
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{
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var handle = GCHandle.Alloc(clientDrawingContext);
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IntPtr clientDrawingEffectPtr = Utilities.GetIUnknownForObject(clientDrawingEffect);
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try
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{
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this.Draw_(GCHandle.ToIntPtr(handle), renderer, originX, originY, isSideways, isRightToLeft,
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clientDrawingEffectPtr);
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} finally
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{
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if (handle.IsAllocated) handle.Free();
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if (clientDrawingEffectPtr != IntPtr.Zero) Marshal.Release(clientDrawingEffectPtr);
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}
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}
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/// <summary>
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/// <see cref="SharpDX.DirectWrite.TextLayout"/> calls this callback function to get the measurement of the inline object.
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/// </summary>
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/// <returns>A structure describing the geometric measurement of an application-defined inline object. These metrics are in relation to the baseline of the adjacent text. </returns>
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/// <unmanaged>HRESULT IDWriteInlineObject::GetMetrics([Out] DWRITE_INLINE_OBJECT_METRICS* metrics)</unmanaged>
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public InlineObjectMetrics Metrics
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{
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get
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{
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InlineObjectMetrics temp;
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this.GetMetrics_(out temp);
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return temp;
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}
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}
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/// <summary>
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/// TextLayout calls this callback function to get the visible extents (in DIPs) of the inline object. In the case of a simple bitmap, with no padding and no overhang, all the overhangs will simply be zeroes.
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/// </summary>
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/// <returns>Overshoot of visible extents (in DIPs) outside the object. </returns>
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/// <unmanaged>HRESULT IDWriteInlineObject::GetOverhangMetrics([Out] DWRITE_OVERHANG_METRICS* overhangs)</unmanaged>
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public OverhangMetrics OverhangMetrics
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{
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get
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{
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OverhangMetrics temp;
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GetOverhangMetrics_(out temp);
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return temp;
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}
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}
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/// <summary>
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/// Layout uses this to determine the line-breaking behavior of the inline object among the text.
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/// </summary>
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/// <param name="breakConditionBefore">When this method returns, contains a value which indicates the line-breaking condition between the object and the content immediately preceding it. </param>
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/// <param name="breakConditionAfter">When this method returns, contains a value which indicates the line-breaking condition between the object and the content immediately following it. </param>
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/// <returns>If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. </returns>
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/// <unmanaged>HRESULT IDWriteInlineObject::GetBreakConditions([Out] DWRITE_BREAK_CONDITION* breakConditionBefore,[Out] DWRITE_BREAK_CONDITION* breakConditionAfter)</unmanaged>
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public void GetBreakConditions(out BreakCondition breakConditionBefore, out BreakCondition breakConditionAfter)
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{
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GetBreakConditions_(out breakConditionBefore, out breakConditionAfter);
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}
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}
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}
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