ISVGObject¶

Base interface for all elements that have a user matrix and/or have bounds.

Unit: BVE.SVG2Intf · Extends: ISVGElement

Methods¶

BufferInvalidate¶

procedure BufferInvalidate;

Drops the persistent buffer of this element and of every element rendering it, so the next render draws them again.

Note

Only has an effect under sroPersistentBuffers. An element whose content changed is not enough on its own: the elements above it composited it into their own buffers, and those would otherwise be re-applied unchanged. The walk goes up the render tree rather than the document, because a referenced element - the target of a use, a gradient, a marker - is rendered somewhere other than where it is declared.

CalcBBox¶

function CalcBBox(
  aRoot: ISVGRoot;
  const aBoundsInclusion: TSVGBoundsInclusionSet): TSVGRect;

Calculates the Bounding box in user coordinates of the element

CalcBBoxCTM¶

function CalcBBoxCTM(
  aRoot: ISVGRoot;
  const aBoundsInclusion: TSVGBoundsInclusionSet): TSVGRect;

CalcBBoxCTM calculates the bounding box of the element transformed by the current transformation matrix.

CalcBBoxCTMClipped¶

function CalcBBoxCTMClipped(
  aRoot: ISVGRoot;
  const aBoundsInclusion: TSVGBoundsInclusionSet): TSVGRect;

CalcBBoxCTMClipped takes the result of CalcBBoxCTM and calculates the resulting bounding box after clipping

CalcBBoxScreen¶

function CalcBBoxScreen(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache;
  const aBoundsInclusion: TSVGBoundsInclusionSet): TSVGRect;

CalcBBoxScreen calculates the absolute axis aligned bounding box of the element including it's child elements in screen coords. Elements that are not rendered directly return RectUndefined.

CalcBBoxScreenIndirect¶

function CalcBBoxScreenIndirect(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache;
  const aBoundsInclusion: TSVGBoundsInclusionSet): TSVGRect;

CalcBBoxScreenIndirect updates the current transformation matrix and evalutes if the element should be visible according to its style settings. If visible it then calls CalcBBoxCTMClipped, else it returns RectFUndefined.

CalcChildrenSize¶

function CalcChildrenSize(aRoot: ISVGRoot): TSVGRect;

Calculates the combined size of the elements children

CalcContentMatrix¶

function CalcContentMatrix(aRoot: ISVGRoot): TSVGMatrix;

Calculates the matrix that is to be applied to the objects children

CalcSizeScreen¶

function CalcSizeScreen(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache): TSVGRect;

CalcSizeScreen calculates the size of the element including it's child elements in screen coords. Elements that are not rendered directly return RectUndefined.

CalcSizeScreenIndirect¶

function CalcSizeScreenIndirect(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache): TSVGRect;

CalcSizeScreenIndirect updates the current transformation matrix and evalutes if the element should be visible according to its style settings. If visible it then calls CalcSizeCTMClipped, else it returns RectFUndefined.

CalcUserMatrix¶

function CalcUserMatrix(aRoot: ISVGRoot): TSVGMatrix; overload;

Calculates the user matrix from the transform attribute

CalcViewPort¶

function CalcViewPort(aRoot: ISVGRoot): TSVGRect;

No description yet.

EventCapture¶

procedure EventCapture(aRoot: ISVGRoot; aParentCache: ISVGObjectCache);

No description yet.

EventCaptureIndirect¶

procedure EventCaptureIndirect(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache);

No description yet.

GetBuffer¶

function GetBuffer: ISVGRenderBuffer;

No description yet.

GetCacheList¶

function GetCacheList: TList<ISVGObjectCache>;

No description yet.

GetClipping¶

function GetClipping(aRoot: ISVGRoot): boolean;

No description yet.

GetCurCache¶

function GetCurCache: ISVGObjectCache;

No description yet.

GetHasBuffer¶

function GetHasBuffer(aRoot: ISVGRoot): boolean;

No description yet.

GetHitTest¶

function GetHitTest: Boolean;

No description yet.

GetIsRendered¶

function GetIsRendered(aRoot: ISVGRoot): boolean;

No description yet.

GetTransform¶

function GetTransform: TSVGTransformList;

No description yet.

InitBuffers¶

procedure InitBuffers;

No description yet.

ObjectAtPt¶

function ObjectAtPt(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache;
  const aPt: TSVGPoint;
  const aIfHitTest: Boolean): ISVGObject;

No description yet.

ObjectAtPtIndirect¶

function ObjectAtPtIndirect(
  aRoot: ISVGRoot;
  aParentCache: ISVGObjectCache;
  const aPt: TSVGPoint;
  const aIfHitTest: Boolean): ISVGObject;

No description yet.

ObjectCacheClear¶

procedure ObjectCacheClear(aParentCache: ISVGObjectCache);

ObjectCacheClear clears the cache that references the supplied aParentCache.

ObjectCacheInvalidate¶

procedure ObjectCacheInvalidate(aParentCache: ISVGObjectCache);

Invalidate the cache

Paint¶

procedure Paint(
  aRoot: ISVGRoot;
  const aBuffered: Boolean;
  aParentCache: ISVGObjectCache);

Paint paints the element if it can be rendered directly (not div, clipPath, mask, etc), it then calls PaintIndirect

PaintChildren¶

procedure PaintChildren(aRoot: ISVGRoot; const aBuffered: Boolean);

PaintChildren calls Paint on the elements children

PaintContent¶

procedure PaintContent(aRoot: ISVGRoot; const aBuffered: Boolean);

PaintContent paints the element content

PaintElement¶

procedure PaintElement(aRoot: ISVGRoot; const aBuffered: Boolean);

No description yet.

PaintIndirect¶

procedure PaintIndirect(
  aRoot: ISVGRoot;
  const aBuffered: Boolean;
  aParentCache: ISVGObjectCache);

PaintIndirect paints the element unless conditional attributes prevent painting. It applies the element style and user matrix and calls PaintClipped.

PaintTestRect¶

procedure PaintTestRect(
  aRoot: ISVGRoot;
  const aRect: TSVGRect;
  const aColor: TSVGColor);

PaintTestRect paints a test rectangle to check bounds

PointInFill¶

function PointInFill(aRoot: ISVGRoot; const aPt: TSVGPoint): boolean;

PointInFill returns True if the point aPt is in the fill of the element

PointInOutline¶

function PointInOutline(aRoot: ISVGRoot; const aPt: TSVGPoint): boolean;

No description yet.

PointInStroke¶

function PointInStroke(aRoot: ISVGRoot; const aPt: TSVGPoint): boolean;

PointInFill returns True if the point aPt is in the stroke of the element

SetHitTest¶

procedure SetHitTest(const aValue: boolean);

No description yet.

SetTransform¶

procedure SetTransform(const aValue: TSVGTransformList);

No description yet.

UpdateCTM¶

procedure UpdateCTM(aRoot: ISVGRoot);

No description yet.

UpdateCTMContent¶

procedure UpdateCTMContent(aRoot: ISVGRoot);

No description yet.

UpdateViewport¶

procedure UpdateViewport(aRoot: ISVGRoot);

Calculates and sets the nieuw viewport from the current viewport settings and the current style attributes

Properties¶

Buffer¶

property Buffer: ISVGRenderBuffer read GetBuffer;

No description yet.

CacheList¶

property CacheList: TList<ISVGObjectCache> read GetCacheList;

No description yet.

CurCache¶

property CurCache: ISVGObjectCache read GetCurCache;

No description yet.

HitTest¶

property HitTest: Boolean read GetHitTest write SetHitTest;

No description yet.

Transform¶

property Transform: TSVGTransformList read GetTransform write SetTransform;

No description yet.